Name of work:- A/R & M/O of Sewerage system to Bhunter ...hpiph.org/Tender/January 2018/Kullu... · Cont. Executive Engineer TERMS AND CONDITIONS Name of work:- A/R & M/O of Sewerage

Cont. Executive Engineer

TERMS AND CONDITIONS

Name of work:- A/R & M/O of Sewerage system to Bhunter town in Tehsil & Distt. Kullu HP. (SH:- l O&M of 0.99 MLD Zone A-D including sewer network

The Contractor/Firm shall be responsible for operating the plant properly as per CPHEEO manual on operation and maintenance of Sewerage and Sewage Treatment System for achieving the desired results given as under :-

a) BOD5 at 5 days at 20 degree centigrade Less than 20mg/Liters. b) Suspended solids. Less than 30mg/Liters c) PH value. 6.5 to 8

d) Oil & Grease Less than 10 mg/liters. e) COD value less than 250 mg/L

1 The contractor/firm or applicable during operation shall be solely responsible for any violation of the Water (Prevention & Control of Pollution) Act, 1974 and any other law of the State due to negligence on his part in properly running the STP & the sewer network and comply with the above parameters. The contractor shall also follow the guidelines of NGT (National Green Tribunal) and HP state pollution board received from time to time. As operation and maintenance of Sewage treatment Plant is governed by the Water (Prevention & Control of Pollution) Act, 1974, which may attract legal implication and any other penalty for violation of norms and if during operation such legal and penalty is levied by the Himachal Pradesh State Pollution Control Board or National Green Tribunal or any agency authorised to do so, the firm/contactor shall be responsible the same. The penalty so imposed for violation shall be borne by the firm/contactor except for the period when influent received is more than designed capacity.

2 The Contractor/Firm shall be responsible for proper housekeeping of Sewage Treatment Plant during all time.

3 Contractor shall engage staff in STP with sufficient experience in handling sewage treatment plant as per following qualification : Sr.No. Manpower Qualifications

1 Assistant Plant Manager B.E. Civil

2 Process Engineer B.Tech. in Environmental Engineering

3 Junior Engineer Diploma in Civil

4 Chemist MSc in Microbiology /Biotechnology

5 Assistant Chemist BSc Medical

6 Operator (Electrical and Mechanical) ITI certificate holder

7 Electrician ITI certificate holder

8 Fitter ITI certificate holder

9 Sewerman/Sweeper

10 Casual labour

11 Chowkidar/watchman

12 Gardener

The contractor/firm will conduct interview for all staff to be deployed in STP and shall supply their appointment order and qualification to Executive Engineer I&P.H. Division No.II Kullu at Bhuntar before taking over the scheme for operation and maintenance. The contractor


having professional degree shall not be considered himself in the list of staff deployed for O&M. If during O&M period any staff deployed in STP leaves his job with one or other reason the contractor/firm shall deploy another staff of equivalent capacity by adopting the same procedure as earlier and submit his appointment order within seven days to the Engineer-in-charge. The staff deployed should be able to understand the advice of consultant/IPH department.

4 All staff deployed in STP shall have to record their shift wise daily attendance at the beginning

and leaving their duties failing which deduction shall be made in bills.

5 The contractor /firm shall quote his firm rate for every year keeping in view the future escalation in material and labour. Therefore, no escalation for material and labour shall be allowed during the contract period.

6 The Contractor/Firm shall be responsible for maintaining the following:-

a) Daily log book. The logbook should contain daily flow of influent, treated effluent, amount

of chemicals consumed per day, Number of energy units consumed daily. Test report of samples. This needs to be mailed to the Executive Engineer daily.

b) Maintenance record of all equipment’s on the proforma SHOULD BE KEPT AS PER DIRECTIONS OF Engineer-in-charge.

c) Oil refilling schedule.

d) Inventory of Chemicals.

e) Inventory of spares.

f) Inventory of Laboratory chemicals and glassware.

g) Analysis/results of samples collected at inlet & outlet. The record of COD, PH, and Suspended solids, total dissolved Solids, Oil & Grease and BOD to be maintained.

h) Laboratory of STP.

i) In addition to above record as per daily record book maintained by the contractor/Firm .

7 The energy charges for operation of plant /equipment’s and water bill will be borne by the department. However, the firm has to bear the energy charges on account of electricity bills in respect of staff accommodation at the said plant.

8 The STP shall be inspected by the Contractor/Firm before submitting their offer and in case of any defect/shortcoming the same shall be elaborated by the contractor in his offer and suggest solution for the same.

9 The contractor/firm will enable the department to get the consent of HPPCB and its renewal thereafter for operation of the STPs. The department will deposit the fees for its renewal.

10 All the chemicals and lubricants shall be brought to the STP on the prior approval of the Engineer-in-Charge and the same shall be got entered into the stock register of the Engineer-in-Charge. The Chemicals needed for smooth running of STP can be had from department at the prevailing store issue rate.

11 The contractor/ firm can use the accommodation available at site after taking permission from the department. The department will charge @ Rs. 1000/per month per set wherever applicable.


12 The firm will arrange itself all spares, consumable items, lubricants, oil, grease & treatment chemicals, alum, polyelectrolyte, lime & laboratory testing chemicals and nothing extra shall be paid to the firm. Change of oil & grease will be done by the contractor in the presence of IPH

Deptt. Representative as per manufacturer’s periodical maintenance schedule. The contractor/firm shall have to satisfy the Engineer-in-Charge with respect to the quality of these items and if need be the contractor/firm shall have to produce Manufacturer Test Certificate or Third Party Inspection Certificate from approved Certification agencies like DNV, LIOYDS & RITES. Minimum Inventory of all these items shall be maintained at all times as per direction of the Engineer-in-Charge.

13 The Contractor/Firm will be responsible for maintaining the existing and newly laid sewer lines

of the zone contributing sewage to the plant from common point/ manhole as decided and mutually agreed. To repair and rectify the leakages and chocking in the Sewerage Network, if any, will be the responsibility of the contractor. The department will take care of all permissions, if any, required for undertaking the repair from any department / agency, on the written request of the contractor. New pipes, if required, shall be supplied by the department free of cost to the nearest point on road head.

14 In case, if there is any disruption in the operational process of smooth running of the STP and

functioning of the sewerage system, the contractor will be solely responsible. The contractor will ensure to remove/ rectify the defects on priority and make the system functional. If he fails to do so, the department will have the liberty to rectify the defects and make the system functional at Contractor’s risk & cost. An inconvenience charge of Rs. 10,000/- per day shall be levied for such intervention in addition to the cost borne by the Department to rectify the defect.

15 The contractor shall have to arrange himself adequate tools and plants required for operation

and maintenance of STP/Network.

16 (A) The contractor shall setup a 24 hours complaint redressal system with at least 1 dedicated landline telephone/mobile for attending of Consumer Complaints. Every Consumer should be allotted a complaint No. for future reference. The cost of installation and the monthly bills of telephone shall be borne by the contractor/Firm.

(B) The contractor/firm will maintain the register of daily complaints which should indicate name of complainant, complaint No, nature of complaint, location/area in respect of leakages, choking, overflow from manhole etc. or other related components of the STP & network. The daily report of the complaints shall be intimated to the Engineer-in-charge at 10.00 AM through mail/fax, failing which a penalty @ Rs.100/- per day shall be imposed on the contractor, if the complaint lodged is not attended within 24 hours of the receipt. Inconvenience charges @ Rs. 1000/- per day shall be charged from the contractor, if the complaint remains unattended and the same shall be rectified at the risk and cost of the contractor.

17 The department shall be at liberty to extend the sewer line/ providing civil structures/ providing

new sewer connection/ extension of sewerage network and expenditure of the same shall be borne by the department. However the maintenance of same shall be responsibility of the contractor/ firm.


18 The contractor/ firm shall have to provide protective gear like gloves and gum boots, masks etc.

to the worker deployed for STP/ sewerage network & necessary uniform and badges should be provided to the worker for their identification. No employee engaged in STP shall be allowed to work without uniform.

19 Wear & tear of all mechanical and electrical equipment, burning of motor , repair of pump and

motor including allied accessories, civil structure and pipe lines during the contract period to be borne by the firm/contractor and nothing extra shall be paid on this account including those pointed in inspection note of inspection officers.

20 The Contractor/Firm shall be responsible for undertaking all kinds of repairs, if any to electrical and mechanical equipment and structures including preventive maintenance during the contract period. The contractor shall engage experienced vendor for maintenance of equipment and shall get the vendor approved from the department before undertaking repairs in writing.

21 The contractor/ firm shall engage minimum labour to achieve the desired results and shall

submit weekly labour return categories wise so engaged; failing which penalty as specified under the Minimum Wages by the Govt. for that particular category or equivalent shall be levied for breach of this condition. Monthly information w.r.t. the staff deployed at STP shall be submitted in Format.

Name of STP: - --------------------- Month------------ Name of firm/contractor-------------------

S.N Name of

employee

Qualification/experience

Designation

Permanent Address

Correspondence Address

EPF No. of employee

Amount deducted

Remarks

22 The contractor/ firm will collect the samples at inlet and final discharge point of STP and shall test the sample in laboratory available at the STP for the parameters specified in condition No.1. The contractor will maintain regular record of results. The daily result should be mailed /faxed to the Assistant Engineer/Executive Engineer and also displayed on the notice board at the S.T.P for public view.

23 The contractor/firm will submit the weekly report of test results and performance of plant and machinery on the proforma supplied by the department to the concerned Assistant Engineer.

24 The disposal of screening, grit & wet or dry sludge will be contractor’s responsibility. The

contractor will dump screening, grit at the location suggested by Engineer-in-charge/ Department with in STP boundary limits and shall maintain the records of quantity removed/ collected and same shall be displayed on the board daily at plant. The contractor shall make


arrangement for packing of the sludge/manure in gunny bags of approximately left size and stack it properly within the STP boundary limits.

25 The quarterly payment will be made to the Contractor within 15 days after submission of bill by the Contractor subject to successful performance/ desired results of treated effluent failing which no payment shall be admissible. The monthly bill should be submitted alongwith attested copy of monthly record as mentioned in condition No. 2, 14 B, 18, 19, 20. The bill should be supported by Employee Challan No. or any other information as desired by the Engineer-in-charge related to the STP & Network.

26 The plant & equipment shall be operated strictly as per O & M manual supplied by the

department and as per the direction of Engineer-in-charge. The O &M manual shall always be readily available in the plant & made available to the officials & public for viewing.

27 The Contractor/Firm shall be responsible for evaluation of performance of STP units as and

when required, as per the direction of Engineer-in-charge if any defects noticed in the process of any unit shall be rectified by the contractor/firm.

28 The Contractor/Firm shall be responsible for the gardening and maintaining the plants/trees and

nothing extra shall be payable for the same. Fresh plantation consultation with department shall be appreciated. If contractor fails to maintain campus of STP do not make proper gardening the Site Engineer/ Assistant Engineer can impose monthly basis penalty for poor performance. Department will take photograph of Plant and Campus before handing it to contractor.

29 The contractor/firm should submit the implementation plan for operation and maintenance of

STP & sewerage network to department.

30 The contractor/firm will not be allowed to sublet the work after award of work, failing which the

agreement shall be rescind immediately and security deposit will be forfeited.

31 There might be increase in sewerage network of the zone as indicated in the schedule of quantity aspect of operation & maintenance. The firm will be responsible for maintaining these additional sewer lines.

32 The contractor/firm shall be responsible for any labour complaints and he shall be solely liable for the penal action if any under the labour laws of the State.

33 The removal of minor slip within the plant boundary will be the responsibility of the contractor/firm or any damage caused to sewer line due to these slips, the maintenance of sewer line will be firm’s responsibility.

34 The contractor/firm shall fulfill/ satisfy all the conditions of labour department as per labour laws.

35 The contractor/firm shall arrange cement, steel, aggregate, sand for minor repairing/ maintenance of civil structures at its own cost.

36 The contractor/firm shall arrange rubber gaskets of reputed make D.I. pipes fittings and manhole covers for maintenance of sewer lines of the zone at its own cost.


37 The deposition of service tax will be firm/contractors responsibility.

38 The cost of Employer Provident Fund (EPF) & Employer State Insurance Certificate (ESIC) shall be borne by contractor. The deposition of the same will be firm/ contractor’s responsibility and department will reimburse the paid EPF separately on producing of document.

39 The contract can be terminated by giving 15 days notice by department if the firm is unable to operate and maintain the plant as per satisfaction of Engineer-in-charge, 2% penal fee shall be deducted from the security amount of contractor as inconvenience charge and performance bond forfeited.

40 The contractor will be responsible for any theft of any material from the STP or the Network. In case of such incident, he shall immediately inform the Department of the same also.

41 The contractor will be responsible for painting including epoxy painting of all equipments, Aeration Tank, Settling/Secondary Clarifier , Channels, railings etc. every year and buildings and boundary walls at least once in the contract period.

42 The department will one time supply the laboratory glassware & laboratory equipment. The inventory of same shall be made at the time of the handing over the plant to the firm. This inventory will be checked at the time of taking over the plant from the firm at the end of O & M contract. All equipments should be well kept and maintained and firm shall be responsible for the same during O & M period. In the event of any loss to the laboratory apparatus the recovery shall be made from the firm/contractor.

43 No payment shall be made to contractor for any private or personal damage caused by rain, snowfall, floods or other natural causes, what so ever during the operation and maintenance period. The damage will be made good by the firm at his own cost & no claim on this account shall be entertained. The contractor shall take all precautions to avoid such accident, exhibiting necessary caution board, day & night speed limit board, red flags, red light whenever required,. He shall be responsible for all damage and accident caused due to negligence on his part. No hindrance shall be caused to traffic during the maintenance work. The contractor shall have to take all insurance cover as required.

44 The contractor/ firm shall motivate & help public for getting sewer connections & the work of making sewer connection of respective users shall be done under supervision of contractor/ department after getting same sanctioned from competent authority and he should get laying work done meticulously as per specifications and nothing extra shall be payable . However list/ details of sewer connections done in each month shall have to be furnished to the department. In case of illegal sewerage connections done on the sewerage network the contractor will be penalized @ Rs. 5000/- per connection.

45 The contractor/firm shall be responsible for the safety of sewer network and STP’s from any type of damages.

46 The contractor/firm shall make L.S. offer for O & M of plant giving bid against the option shown in NIT. Quoting option is compulsory failing which tender shall be summarily rejected.

47 The contractor shall ensure that at the time of handing over the plant Civil structure as well as mechanical & electrical components are in working & fit condition.

48 The Engineer in charge can extend or terminate the contract at any stage, but contractor cannot leave the work until and unless alternate arrangement is made by the department to run the scheme. Release of security shall be subject to satisfactory handing over of treatment plant & network to the department.


49 The contractor shall allow and facilitate the collection of effluent & sludge samples by any authorized Govt. Agency or legal body. The contents of the samples should always be within the prescribed limits as per the H.P. Pollution Control Board or any other regulating agency. A compensation of Rs. 10,000/- shall be levied on the contractor/ firms for first instance of failure of the sample during month. If another sample fails during same month compensation shall be doubled and same procedure be repeated every month afresh.

50 The above conditions 1 to 48 should be strictly adhered to & nothing extra shall be paid on this account. Clarifications if any should be sought at the time submission of eligibility/ Technical bid. Non compliance to any of the above conditions shall invite an inconvenience charge of Rs. 10,000/- for each intervention. The risk and cost involved for the intervention to comply with the above conditions shall also be borne by the contractor in addition to Rs.10, 000/-.

51 Performance bond in shape of an unconditional bank guarantee of a Nationalized Bank

amounting to 5% of the awarded amount shall be executed by the Firm/Contractor in the favour of Executive Engineer, I&PH Division No. II, Kullu at Bhuntar within 15 days of issue of letter of intent and before award letter i.e. before entering into the agreement. The department shall be at liberty to adjust appropriate amount or forfeit the full amount in case the above mentioned conditions i.e. 1 to 49 are not adhered to by the contractor/firm.

52 Labour cess @ 1% shall be deducted from the bill.

Executive engineer IPH Division NoII Kullu at Bhuntar.


TECHNICAL PARAMETERS AND MANDATORY GUIDELINES:

1. The contractor shall be responsible for operating the plant properly and for achieving the desired

effluent standards given as under:-

a) BODS at 20 degree Centigrade Less than equal to 20mg/l

b) Suspended solids Less than equal to 30mg/l

c) pH value. 6.5 to 8

d) COD value less than 250 mg/L

e) Other effluent standards as per the guidelines laid down by HP Pollution Control Board. 2. Operating procedure for different components of the STP/Sewerage scheme shall be as per Annexure “A”

3. The contractor shall be responsible for daily testing and data recording schedule for various

parameters as per annexure “B”.

4. The contractor shall be responsible for maintaining the Daily record book and the maintenance

schedule as per annexure “C”.

5. The contractor shall be responsible for daily maintenance report of treatment parameters, manpower

deployed, energy consumed and consumable used for treatment on the prescribed proforma as per

annexure “D”.

6. The contractor shall be responsible for weekly maintenance of record of operation and maintenance

activities of different units of plants as per Annexure “E”

7. The contractor shall be responsible for submitting the weekly as well as monthly return on the

prescribed proforma as per annexure “D” in consolidated shape with date wise record to the concerned

Engineer-in-charge. (Weekly return to be submitted on every Monday and monthly before 5th

of every

month.)

8. The contractor shall be responsible for deployment of the staff on STP/Sewerage Network

qualitatively as per Annexure “F” and quantitatively as per Annexure “G”

9. The contractor shall be responsible for maintaining the working schedule for the staff deployed

on STP/Sewerage scheme strictly as per Annexure.”H”

10. At least one sample every quarter shall be collected and sent for examination by a committee consisting of EE (Design) and A.E (Design) from circle office.

11. After completion of the contract the contractor should hand over all the registers to Engineer-in-charge.

The non-performance /under performance zxSof STP/sewerage scheme shall account for various

deductions from the monthly bill as per annexure “I”. The monthly bill of the contractor shall be

prepared strictly in accordance to the performa based on monthly return submitted by the

contactor/firm annexed as “D” ,which shall be invariably prepared and submitted by the engineer-in –

charge along with the monthly bill. While preparing the monthly bill engineer-in-charge will ensure that

the results of the sample got tested by the circle level committee shall supersede all other respective

monthly sampling results and shall be the governing values for making the deductions.


GENERAL TERMS & CONDITIONS: 1. The contractor shall submit monthly bill before 5

th of every month along with all returns as per

annexure “L to N and deduction as per Annexure C” 2. The contractor shall be responsible for maintaining the Schedule of preventing maintenance

(centrifugal pumps) Annexure “J”

3. The contractor shall be responsible for maintaining the Schedule of preventing maintenance

(motors) Annexure “K”

4. The contractor shall be responsible for maintaining the Schedule of preventing maintenance (SST

and Aeration tank) Annexure “L”

5. The contractor shall be responsible for maintaining the doses of various chemicals used in the

STP as per Annexure “M” unless variation is require d owing to specific site conditions.

6. The contractor shall be responsible for maintaining the Inventory of chemicals, spares and

glassware.

7. The contractor will obtain the consent for submission to HPPCB and its renewal thereafter. The

department will deposit the fees for its renewal. 8. The power failure record should be maintained by the contractor and Engineer-in-charge will

tally the same with HPSEB. 9. The firm will arrange itself all consumable items spares, lubricants, oil, grease and treatment

chemicals, alum, poly electrolytes, lime and laboratory testing chemicals and nothing extra shall

be paid to the firm. Change of oil and grease will be done by the contractor in the presence of

IPH representative as per manufacturer’s periodical maintenance schedule. 10. The contractor will be responsible for maintaining the newly laid sewer lines contributing sewage

to the plant. To repair and rectify the leakages and chocking of the sewerage network, if any will

be the responsibility of the contractor. The department will take care of all permissions, if any

required for under taking of repair from any department/contractor on request of contractor.

Pipes, if required shall be supplied by the department free of cost from IPH Division store at

Shamshi. 11. The contractor shall have to arrange at his own cost adequate tools and plants required for

operation & maintenance of STP/Network.

12. The department shall be at liability to extend the sewer line / providing structure/ providing new

sewer connection/extension and expenditure shall be borne by the department. However the

maintenance of same shall be responsibility of the contractor without any extra cost.

13. The contractor shall have to provide uniform to the worker deployed, for the STP / Sewerage

network and necessary badges should be provided to the worker for their identification.

14. All wear & tear of all mechanical equipment, structures i/c pipe lines to be borne by the

contractor and nothing extra shall be paid on this account.

15. The contractor shall be responsible for undertaking all kinds of repair, i/c those pointed out in

inspection note of inspecting officers in electrical & mechanical equipments and structure i/c

preventive maintenance. The contractor shall engage experienced vendors for maintenance of

equipments and shall get the vendors approved from department before under taking repairs in

writing.

16. The contractor will collect the samples at inlet, aeration tank, SST & final discharge point and


test the samples in the Laboratory available at the STP and maintain regular record of results.

17. The disposal of screening, grit & sludge will be contractor’s responsibility. The contractor will

dump screening, grit & the sludge at the location suggested by the Engineer-in-Charge/

department within the STP boundary limits and shall maintain the record of quantity removed / collected and same shall be displayed on the board daily at plant.

18. The quarterly payment will be made to the contractor based on monthly bill prepared by the

engineer-in-charge after making all deductions as per annexure “G” within 15 days after

submission of bill by the contractor subject to successful performance / desired results of treated

effluents failing which no payment shall be admissible. 19. The contractor will be responsible for evaluation of performance of each unit of STP as and when

required as per the direction of Engineer-in-Charge.

20. The contractor will be responsible for gardening and maintaining the plants/ trees and nothing

extra shall payable for same. Fresh plantation in consultation with department can be made. 21. The contractor should submit the implementation plan for operation and maintenance of STP and

sewerage network. 22. The removal of slips and landslides in the plant boundary as well as in the sewerage network will

be firm’s responsibility upto Rs 15000 per year. Any damage caused to sewer lines due to

landslides / slips the maintenance of sewer line will be firm’s responsibility. 23. Cement and steel shall be issued by the department at store issue rate to be specified in the DNIT

and maintain its proper record by the Engineer-in-charge. 24. The contractor shall arrange at its own cost rubber gaskets of reputed make, lead valves / DI pipe

fitting and manhole covers for maintenance of sewer lines.

25. The deposition of service tax will be firm /contractor’s responsibility. The awarded rate is

inclusive of service tax.

a. The cost of employee’s provident fund (EPF) & employee state insurance (ESIC) is i/c in the

awarded amount. The deposition of same will be firm / contractor’s responsibility.

26. The contractor will be responsible for any theft of material of STP/ Sewerage network. In case of

such incident he shall immediately inform the department and lodge FIR with the Police station

concerned. 27. The contractor will be responsible for painting of all equipments i/c epoxy painting, buildings

annually. 28. The department will one time supply the laboratory Glass ware and laboratory Equipments and

an inventory of same be made at the time of handing over the plant to the firm. This inventory

will be checked at the time of taking over the plant form the firm at the end of O&M contract. All

the equipments should be well kept and maintained and firm shall be responsible for the same


during O&M period. 29. The contractor shall take all precautions to avoid all incidents by exhibiting necessary caution

board, day and night speed limit board, red flags, red light wherever required. He shall be

responsible for all damages and accidents caused due to negligence on his part, no hindrance

shall be caused to traffic during the maintenance period. The contractor has to take all insurance

cover. 30. The contractor shall motivate public for getting sewer connections and the work of making sewer

connection of respective users shall be done under supervision of contractor / department after

getting sanction from the competent authority and he should get the work of new connections

done mentioned as per specifications and nothing extra shall be payable. However list / details of

sewer connections done in each month shall have to be furnished to department. 31. The contractor shall be wholly responsible for the safety of sewer network and STP’s from any

type of damages. 32. The firm agreed to deploy manpower having requisite minimum academic and technical

qualification as required under R&P rules of IPH Department.

33. If any term and condition is contradictory to each other then the decision of Engineer-in-charge

will be final and binding upon the contractor.

Executive Engineer, I&PH Division No-II Kullu at Bhuntar


OPERATING PROCEDURES --------- ANNX. A


OPERATING PROCEDURES: Firm should do comply strictly the operating procedure laid down

as under; ------------------ ANNX. A

Manual Screen Channel

Duty: This system is provided in the STP to remove floating matter from the sewage.

A. Operation of manual screen channel 1. There are two screen channels, one working and one standby. By suitable operation of

aluminum gates, one of the two channels should be kept in operation while maintenance is being carried out in the other channel.

2. While working on the screens the sweeper should wear gloves and rubber boots. 3. In the morning, during his round, the Junior Engineer estimates the quantity of screened

waste and describes the type of waste. Data is reported in the daily status record. 4. Junior Engineer orders the disposal of the screened waste at a suitable disposal site daily

hauled through a truck outside the plant premises. 5. Screenings shall be dumped into the nearby area within the STP premises as directed by the

JE on daily basis before it is hauled outside the premises. As far as possible the material should be disposed off daily.

B. Maintenance of manual screen channel 1. Cleaning of screen is done with a rake. Waste has to be removed from the bottom of the

screen towards the top. Screenings shall be removed from bar screens and transferred onto wheel barrows and finally hauled and dumped in a remote area as directed by the Junior Engineer.

2. Waste has to be put in the wheelbarrow as soon as the screen tray is filled. Waste shall be dumped frequently in order to prevent odour problem.

3. The concrete works have to be checked regularly and repaired when necessary. 4. The railings and ladder should be painted yearly. 5. The screen should be epoxy painted yearly. 6. Greasing of gates should be done on a regular basis in order to ensure smooth operation. 7. The O & M manual supplied by the vendor should be consulted regularly for proper

maintenance of the gate.

GRIT CHAMBER

Duty: This system is provided to remove non-organic material from the sewage.

A. Operation of Grit Chamber

1. Grit chamber is divided into 2 channels out of which one is working and one is standby.


2. After 2 days or as per the quality of the incoming sewage, the J E orders to divert the flow of

sewage to the standby grit channel. The gate to the respective channel is closed in order to stop the flow.

3. The used grit channel is first allowed to drain the excess water by opening the sluice vale provided at the end of the grit channel.

4. The used grit channel should be washed, dried and cleaned on the same day. 5. When working in the grit channel the sewer men should wear gloves and rubber boots in

order to protect them from any injury. 6. After the channel is drained the sewer-men remove grit from the channels with the help of

shovels and finally the grit is dumped in the wheelbarrows. 7. A full wheelbarrow is transported to the dumping site. 8. The operator estimates the amount of grit ready for disposal by counting the numbers of

wheelbarrows. 9. The operator reports the amount of grit to Junior Engineer who incorporates the amount of

grit in the daily status report. 10. The cleaned grit channel should be left dry until next use. B. Maintenance of Grit Chamber 1. Every two days or depending upon the amount of grit accumulation, the standby grit

channel shall be put in operation. 2. By instruction of the Junior Engineer the operator shall close the gate of the grit channel

that is presently operational and open the gate and divert the flow to the standby grit channel.

3. The operator shall slowly open the sluice valve at the end of the closed grit channel in order to drain the extra water.

4. The grit will be collected in the wheelbarrows and manually taken to the final dumping site. 5. The sewer man shall remove the remaining grit from the channel with a water hose. 6. The cleaned grit channel should be left for drying until next use. 7. The sluice valves shall be checked for corrosion and should be repaired if necessary. 8. Greasing of valves shall be done once in three months or as per manufacturer specifications. 9. Valves shall be painted once a year.

BIOLOGICAL TREATMENT SYSTEM

Duty: This system is designed so as to sustain an activated mass of microorganisms in an

aerobic environment capable of degrading the sewage biologically

A. Start-up Procedure Before start-up, all components of the system must be checked according to the manufacturer’s

instructions.

For the extended aeration process, it is necessary to seed the aeration tank with some activated

sludge normally imported from a suitable activated sludge / extended aeration plant prior to the

introduction of sewage into the aeration tank.

The activated sludge used for seeding must not be left without air for more than 1 to 2 hours;

otherwise, the sludge may turn anaerobic due to absence of oxygen required for the

microorganisms to grow.


The following steps are to be followed after seeding of the extended aeration tank has been

completed:-

1. Continue sewage transfer into the aeration tank until the depth of sewage in the aeration tank is upto the design value.

2. Start the surface aerators to maintain the dissolved oxygen in the mixed liquor between 1.5 to 2 mg/1.

3. Once the aeration tank is filled completely, sewage will flow by gravity into the secondary clarifier.

4. The biological sludge settles and is collected at the bottom of the secondary clarifier. 5. Ensure activated sludge is returned to the aeration tank by starting the return sludge pumps

at 100% rate. 6. Continue returning the entire sludge until the MLSS concentration reaches about 4000

mg/1. B. Normal Procedure 1. The normal plant operation shall be reached in 3 to 4 weeks. 2. Surface aerators and return sludge pumps should run continuously and after maintaining

required MLSS in the tank, the excess sludge should be wasted to the sludge well by opening the bypass valve at the discharge of the return sludge pumps. MLSS concentration, F/M, as well as DO shall be monitored continuously in the aeration tank.

C. Operating Guidelines The important parameters for the efficient operation of the extended aeration tank are

The important parameters for the efficient operation of the extended aeration tank are

1. Dissolved oxygen (DO) 2. F/M ratio 3. pH 4. MLSS Concentration

D Routine Maintenance of aeration tank, secondary clarifier tank, their equipment and return

sludge pumps.

1. Every year the concrete of the aeration tank and secondary clarified tank shall be checked for corrosion and should be repaired if necessary.

2. The inlet and outlet pipes should be checked for any blockages. 3. The ladder and hand railing should be painted yearly. 4. The levels of overflow weirs should be checked yearly. 5. For the maintenance of the surface aerator, secondary clarifier equipment and recycle

sludge pumps, the respective O&M Manual supplied by the respective vendor should be referred.

6. The alignment of the return sludge pumps must be checked properly. 7. Suction and delivery valves of return sludge pumps should be checked to ensure that they

are in open position and pipe alignment should also be checked. 8. The spindles of the sluice valves and the non return valves shall be greased every 3 months.

The glands and packing of the valves shall be checked every 3 months and replaced if necessary.


9. Electrical connection of the pumps shall be checked every year. 10. Corroded electrical connections shall be repaired every year.

SLUDGE WELL AND FILTER PRESS HOUSE

Duty: The excess biological sludge from the extended aeration system and the chemical sludge

from the clariflocculator are collected in the sludge well from where the same is pumped into the

filter press via the filter press feed sludge pumps, all of which are housed in the filter press house.

A Operation of Sludge disposal system

1. The sludge is received from the secondary clarifier and clariflocculator and pumped into the manual filter press via the filter press feed sludge pumps housed in the filter press house.

2. The alignment of the pumps must be checked properly. 3. Suction and delivery valves of pumps should be checked to ensure that they are in open

position and pipe alignment should also be checked. 4. The pumps must be operated periodically to pump the sludge from the sludge well into the

filter press as per instructions of the Junior Engineer. 5. The chemical dosing system must be operated properly so that appropriate dosing of lime

and polyelectrolyte is applied to the sludge in the sludge well. 6. The manual filter press has to be operated and the dried sludge cake shaken off an collected

in wheel barrows periodically as per instructions from Junior Engineer. 7. For the operation of the filter press the O&M manual supplied by the respective vendor

must be referred. B. Normal Operation

1. Weigh the required quantity of chemical. 2. Prepare the chemical solution by adding the required quantity of water for preparing

desired strength of solution. 3. Continue mixing with the agitator till the homogenous solution of required strength is

achieved. This will become the stock solution. 4. Start the dosing pumps. D. Shut-down procedure 1. Flush the dosing lines. 2. Stop the agitator. 3. Clean and drain the tank if required.

Sewer Network Maintenance:

Sewer network inspection and maintenance should be planned. The whole sewerage system should be divided into different area, which are placed under A Maintenance labour.The maintenance labour preferably consist of supervisor and sewer man. The work of each sewer man would consist of the following:

Check manhole condition for deposition of silt, flow, new connections, manhole covers, and structural failure of manholes. While the cleaning of the manholes, pipes etc. will be undertaken by the sewer man and if repair needs to be done then it is to be performed by separate construction gang comprising mason and helpers.


Check for any harmful and extraneous matter entering into the sewer line so that further investigation for the cause and location can be justified.

Check overflow of sewers and manholes.

Identify chronic trouble spots and pay regular attention to those areas to avoid any havoc.


ANNX B

DAILY TESTING AND DATA RECORDING SCHEDULE FOR

VARIOUS PARAMETERS


Annexure”B”

DAILY TESTING AND DATA RECORDING SCHEDULE FOR VARIOUS PARAMETERS (1000 & 1600 HOURS)

Test/

Parameter

INLET TO RAW SUMP/EQT FROM

AERATION

TANK(s)

INLET TO

SST

OUTLET

SST

FINAL

DISCHARGE

pH

TS

SS

TDS

DO

TEMP.

BOD

COD

O&G

Cl2 DEMAND

RESIDUAL

Cl2

MLSS

MLVSS

SVI SLUDGE

ANY

SPECIFIC

As required


ANNX C

DAILY RECORD BOOK AND MAINTENANCE SCHEDULE


Annexure”C”


DATE:

Name of STP:

Sr.

No.

SHIFT NO.1 SHIFT NO. 2 SHIFT NO. 3

Daily record for General Items (Enter relevant values in each Column for each of the 3

shifts.

Measurement of flow in the Parshall Flume/PFWeir on hourly basis

1) POWER SUPPLY in kWh

Started

hours and

energy

reading

Closed hours

and energy

reading

Started

hour

and energy

reading

Closed hours

and energy

reading

Started

hours

and energy

reading

Closed hours

and energy

reading

2) NO. OF WHEEL BARROWS OF SCREENING FROM MANUAL SCREEN

Screen

No.1

Screen No. 2 Screen

No.1

Screen No. 2 Screen

No.1

Screen No. 2

3) QUANTITY OF SCREENINGS IN M³/DAY

Screen

No.1

Screen No. 2 Screen

No.1

Screen No. 2 Screen

No.1

Screen No. 2

4) No. of wheel barrows of grit collected from manual grit chambers

Grit

Chamber

No.1

Grit

Chamber

No.2

Grit

Chamber

No.1

Grit

Chamber

No.2

Grit

Chamber

No.1

Grit Chamber

No.2

5) QUANTITY OF GRIT IN M³/DAY

Grit

Chamber

No.1

Grit

Chamber

No.2

Grit

Chamber

No.1

Grit

Chamber

No.2

Grit

Chamber

No.1

Grit Chamber

No.2

6) RECYCLE PUMPS IN OPERATION

No. of

hours

Pump 1 is

in

operation.

No. of hours

Pump 2 is in

operation.

No. of

hours

Pump 1 is

in

operation.

No. of hours

Pump 2 is in

operation.

No. of

hours

Pump 1 is

in

operation.

No. of hours

Pump 2 is in

operation.

7) AVERAGE FLOW IN LITERS PER HOUR OF RECYCLE PUMPS

Pump 1 Pump 2 Pump 1 Pump 2 Pump 1 Pump 2


8) SLUDGE FEED PUMPS IN OPERATION

No. of

hours

Pump 1 is

in

operation.

No. of hours

Pump 2 is in

operation.

No. of

hours

Pump 1 is

in

operation.

No. of hours

Pump 2 is in

operation.

No. of

hours

Pump 1 is

in

operation.

No. of hours

Pump 2 is in

operation.

9) AVERAGE FLOW IN LITRES PER HOUR OF SLUDGE FEED PUMPS


10) NO. OF TROLLEYS OF SLUDGE REMOVED FROM FILTER PRESS

11) QUANTITY OF SLUDGE IN M³/DAY REMOVED FROM FILTER PRESS

12) INLET SEWAGE CHARACTERISTICS AT FIRST UNIT NAMELY INLET

CHAMBER

Colour pH SS BOD Colour pH SS BOD Colour pH SS BOD

13) OUTLET SEWAGE CHARACTERISTICS AT FINAL UNIT NAMELY FINAL

COLLECTION CHAMBER


14) POLYELECROLYTE CONSUMED IN KGS

15) ALUM CONSUMED IN KGS

16). LIME CONSUMED IN KGS

17) DAILY CHECK RECORD FOR CIVIL & MECHANICAL UNITS -PUT C FOR

CHECKED / CC FOR CHECKED & CORRECTED / NC FOR NOT CHECKED

IN EACH COLUMN FOR EACH OF THE 3 SHIFTS

(A) INLET& SCREEN CHAMBER

i) Check concrete works for erosion and leakage and repair, if necessary

ii) Check screen and replace damages bars if necessary

iii) Painting of screening / bars

iv) Replace damaged wheel barrows

v) Check for obnoxious, odours, flies and other insects, and corrective action taken.

vi) Check for excessive screen designing and correction action taken.

B) GRIT CHAMBER

i) Check positioning of proportional weir

ii) Check concrete works for erosion and leakage and repairing if necessary


iii) Frequent cleaning of grit channel

iv) Paining of railings and ladders

v) Check for rotten eggs odour in grit channel and corrective action taken

vi) Check if removed grit is grey in Colour, smells bad and greasy and corrective action

taken.

vii) Check for low recovery rate of grit and corrective action taken

viii) Check for septic waste with grease, gas bubbles rising in grit channel and corrective

action taken

C) AERATION TANK

i) Check concrete works for erosion and leakage

ii) Check for obstruction in the incoming/outgoing pipes and remove obstruction

iii) Check for proper functioning of surface aerators

iv) Check level and sharpness of weir crest

v) Painting of railings, chequered plates and ladder plates

vi) Check for proper satisfactory performance of aeration tank

vii) Check for odours from aeration tank due to high loading and corrective action taken.

viii) Check for odours from aeration tank due to high MLSS and corrective action taken

ix) Check for odours from aeration tank due to high ambient temperature and corrective

action taken

D) SECONDARY CLARIFIER

i) Check concrete works for erosion and leakage and repair if necessary.

ii) Check obstruction in incoming/outgoing pipes and remove the obstruction

iii) Check level and sharpness of weir crest

iv) Painting of railings, ladders and chequered plates

v) Check for proper functioning of secondary clarifier equipment

vi) Check for proper satisfactory performance of secondary clarifier tank

vii) Check for bulking sludge in clarifiers and corrective action taken


viii) Check for rising sludge in clarifier and corrective action taken.

ix) Check for floating sludge in clarifiers and corrective action taken.

E) FLASH MIXER/CLARIFLOCCULATOR TANK

i) Check level and sharpness of weir crest

ii) Paining of railings, ladders and chequered plates

iii) Check concrete works for erosion and leakage and repair, if necessary

iv) Check obstruction in the incoming/outgoing pies and remove the obstruction

v) Check for proper function of flash mixer and clariflocculator equipment

vi) Check for any damage to the scraper and repair/replace if necessary

vii) Check for proper satisfactory performance of flash mixer and clariflocculator tank.

F) FILTER PRESS

i) Check that the feed pressure is not great than 6 Kg/ Cm²

ii) Check that slurry temperature is not more than 95° C

iii) Check that the filter cloth is not torn or wrinkled

G) ALL PUMP HOUSES / BUILDINGS



iii) Check electrical connection and wiring, remove and replace corroded connections.

H CENTRIFUGAL PUMPS

i) Maintain record of discharge pressure

ii) Check bearing temperature

iii) Check voltage and current of motor

iv) Observe for any abnormal noise or variation

v) Ensure constant flow of external sealing liquid if provided

vi) Check bearing lubricant and replenish if required

vii) Check stuffing box leakage

viii) Check pump alignment


ix) Check for tightness of securing nuts and bolts

x) Check measuring instruments i.e. pressure gauges

xi) Overhaul of pump

I MIXERS FOR DOSING TANKS

i) Lubrication of bearings and gear box

ii) Check coupling alignment

iii) Overhauling of gear box

iv) Check bearings

v) Alignment of drive unit and mixer shaft

vi) Corrosion of wetted parts

vii) Tightness of all hard ware

viii) All electrical connections

J SLUICE GATE / VALVES

i) Lubricate all moving parts

ii) Clean rubber packing of gates

iii) Check movement of spindle

iv) Paint the valves and other mechanical parts


ANNX D

DAILY MAINTENANCE REPORT OF TREATMENT PARAMETERS,

MANPOWER DELOPYED, ENERGY CONSUMED AND

CONSUMABLES


Annexure”D”

S.NO.

Parameters Units Present Design requirement

Actual Performance/value during the month

1 Effluent Standards

BOD5 mg/l 20

SS mg/l 30

MLSS mg/l 3000-5000

MLVSS mg/l 70-80 % of MLSS

F/M ratio d-1

0.05-0.18

SVI 100-150

pH 6.8-7.2

2 Manpower

Process Engineer Nos 1 No. for each STP

Chemist Nos

Operators Nos

Sewer man Nos

Chowkidar Nos

Casual Labour Nos

3 Energy

Aerators kWh

Settling tank scrapper

kWh

Recycle pumps kWh

Total energy to be consumed

kWh


4 Consumables

Alum Kg

Lime Kg

Polyelectrolyte Kg

Bleaching Powder Kg


ANNX E

RECORD OF OPERATION AND MAINTENANCE ACTIVITIES


RECORD OF OPERATION AND MAINTENANCE ACTIVITIES: Annexure ” E”

Following performa of the maintenance records should be maintained by the firm to maintain

the proper functioning of the plant. The activities for the maintenance of the different units of

plant shall be recorded weekly. The records shall be maintained in such a manner that if a

particular activity is performed on a particular week it must be marked in the appropriate box in

the following record sheet.

S.No. Maintenance

Activities

Week

1 2 3 4 5 6 49 50 51 52

A. Inlet & Screen

Chamber

1. Check concrete works

for erosion and

leakage & repair, if

necessary.

2. Check the screens &

replace the damaged

bars, if necessary.

3. Painting of the screen /

bars.

4 Replace the damaged

wheel barrows.

B Grit Chamber

1. Check the positioning

of the proportional

weir.


for erosion and


necessary.

3. Frequent cleaning of

the grit channel.

4. Painting of railings

and ladders.

C Aeration Tank


for erosion and

leakage and repair, if

necessary

2. Check obstruction in

the incoming /

outgoing pipes and

remove the

obstruction.

3. Check for the proper

function of the surface

aerator.

4. Check the level and


sharpness of the weir

crest.

5. Painting of railings,

ladders & chequered

plates.

6. Check for proper

satisfactory

performance of

aeration tank.

D Secondary Clarifier


for erosion and


necessary.


the incoming /

outgoing pipes and

remove the

obstruction.



crest.


ladders and chequered

plates.


functioning of the

secondary clarifier

equipment.

6. Check for any damage

to the clarifier scraper

and repair / replace if

necessary.

7. Check for proper

satisfactory

performance of

secondary clarifier

tank.

E. Flash mixer /

Clariflocculator

tank.



crest.



plates.


for erosion and


necessary.


the incoming /

outgoing pipes and

remove the


obstruction.

5. Check for proper

function of flash mixer

and clariflocculator

equipment.


to the scraper and

repair / replace if

necessary.

7. Check for proper

satisfactory

performance of flash

mixer and

clariflocculator tank.

F Filter Press

1. Check that the feed

pressure is not greater

than 6 kgs/cm²

2. Check that the

temperature of the

slurry is not more than

95°C

3. Check that the filter

cloth is not torn or

wrinkled.

G All Pump Houses /

Buildings


for erosion and


necessary.



plates.

3. Check electrical

connections and

wiring, remove and

replace corroded

connections.

H Centrifugal Pumps

1. Maintain record of

discharge pressure.

2. Check bearing

temperature.

3. Check voltage and

current of motor.

4. Observe for any

abnormal noise or

variation.

5. Ensure constant flow

of external sealing

liquid if

6. Check bearing

lubricant and replenish

if contaminated or


blackened due to

overheating.

7. Check stuffing box

leakage. Normal

leakage of 60 drops /

minute is

recommended

8. Check pump

alignment.

9. Check for tightness of

securing nuts and

bolts.

10. Calibrate measuring

instruments i.e.

pressure gauges and

flow indicators.

11. Overhaul of pump.

I Mixers for dosing

tanks

1 Lubrication of

bearings and gear box.

2. Check coupling

alignment.

3. Overhauling of gear

box

4. Check bearings.

5. Alignment of drive

unit and mixer shaft.

6. Corrosion of wetted

parts.

7. Tightness of all

hardware

8. All electrical

connections.

J Sluice gate / valves

1. Lubricate all the

moving parts.

2. Clean the rubber

packing of the gates.

3. Check the movement

of the spindle.

4. Paint the valves and

other mechanical parts


ANNX F

STAFFING


STAFFING: ( ANNX. F )

INTRODUCTION

In this chapter the personnel requirements for STP operation in its widest sense as well as the

responsibilities that each individual has in the total staffing set up area described. In the

operation and management of the STP, three functional levels can be distinguished as given in

Figure below:

Management Level

Operational Level

Labour Level

The organizational set-up of the STP for Operation & maintenance is defined in the following three level.

Management level

Operation level

Labour level The responsibilities and functions of these levels are described in the following paragraphs:

1. Management Level: The management level comprises of the plant managers. The Plant Manager and Assistant Manager will be responsible for the co-ordination of all activities at the plant site and forms the link between the treatment plant staff .

2. Operation Level: The operation level comprises of a Junior Engineer (Civil) and a Junior Engineer (Electrical & Mechanical). The Junior Engineers are responsible for the functioning of the treatment plant. Their activities include instructions to the Operators, Chemist, etc., the co-ordination of adjustments in process operation, and reporting to the Plant Manager. The Junior Engineers are also responsible for the training of new personnel. The Junior Engineers are responsible for the daily operation (cyclic operation) of the plant.

They instruct the operators and sewer men to carry out the necessary activities e.g.

cleaning, sampling, data collection and maintenance of the plant. The Junior Engineers keep

Assistant Plant Manager

Process Engineer Junior Engineer

Chemist

Assistant Chemist

Operator (Electrical and Mechanical), Electrician,Fitter, Sewerman, Casual labour, Gardener, Watchman

Watchman

Gardener


the status records and will carry out the interpretation of laboratory analyses. They

regularly report to the Plant Manager to keep him informed on the status of the plant,

process functioning, plant operation data and process modifications, when required.

3. Labour Level: The labour level consists of operators, sewer-men, and casual labourers. The Operators and Sewer men carry out all labour intensive jobs in the operation of the plant. They act on instructions of the Junior Engineers. The operators shall monitor and ensure the proper hydraulic functioning of the plant during the late shift and at the early hours. The electrician is responsible for proper functioning of all electrical installations of the plant and replace the operators, if needed. The Casual Labourers carry out miscellaneous tasks, such as cleaning of the drying beds, dismantling of the mechanical equipment, pump lifting, gardening etc.

The laboratory staff functions as a supporting unit for the plant staff and consists of a Chemist

and an Assistant Chemist. The Chemist is responsible for the collection, sampling and analysis of

the incoming and treated sewage. The Assistant Chemist is the helper of the Chemist.

Table: Job Description of Assistant Plant Manager and Process Engineer

Function Management of STP in all respect and take corrective actions

Level B.Tech (Civil) and B.Tech. in Environmental Engineering

Main Task Check functioning of the plant; take corrective measures. Co-ordinate civil and

mechanical / electrical maintenance and operation of the plant. Assist Plant Manager will

be responsible for the O&M of STP

Time to be

spent

6/7 days / week.

Number 1+4

Detailed

Tasks

Daily inspection of the treatment plant and instruction to E/M coordinator and main

operator civil. Interaction with process controller. Evaluation of treatment plant

performance based on the evaluation sheets; elaboration of evaluation reports. If

necessary, coordination of adjustments of the process operation. Reporting of plant

performance and related subjects to the manager of the treatment plant be preparing an

evaluation report. This report may include overall evaluation and planning of operation

and maintenance activities. Responsible for training of personnel at lower level.


Table: Job Description of Junior Engineer (Civil)

Function Operation and Maintenance of STP

Level Diploma in civil

Main Task Carry out operation activities pertaining to screening, grit removal and sludge removal.

Responsible for carrying out maintenance of civil works, manually operated valves and

piping.

Time to be

spent

6 days / week.

Number 1

Detailed

Tasks

Interact with Process Manager on sludge operations. Interact with Contractors for civil

maintenance. Instruct operator miscellaneous to carry out maintenance works. Instruct

labourers and drivers to carry out sludge operation. Operate sludge withdrawal system and

monitor volumes withdrawn. Oversee garden keep-up, Supervise Civil maintenance by

fitter and sweepers.

Table: Job Description of Chemist

Function Chemist

Level M.Sc in Microbiology/ Biotechnology

Main Task Daily analyses of samples from the STP. A chemist will be responsible for the sampling

analysis of STP.

Time to be

spent

6/7 days / week.

Number 4

Detailed

Tasks

Responsible for sampling of incoming sewage, treated sewage and sludge, execution of

routine analyses of the incoming sewage, treated sewage and sludge samples of the STP.

Reporting of the routing analyses of the STP in a laboratory record to the civil / process

coordinator. Coordination of sampling and analyses carried out by outside contractor.

Management of laboratory equipment, glassware, chemicals etc.

Table: Job Description of Assistant Chemist.

Function Laboratory attendant

Level BSc. Medical

Main Task Assistant of the Chemist

Time to be

spent

6 /7days / week.

Number 4

Detailed

Tasks

Assist the chemists in the daily sampling and analyses. Cleaning of glassware, etc.

Table: Job Description of Operator Electrical/Mechanical/Miscellaneous

Function Operator Miscellaneous

Level ITI certificate holder

Main Task Operation and maintenance of screening and degritting facilities.

Time to be

spent

7 days / week in Shifts

Number 24

Detailed

Tasks

Carry out all operation and maintenance activities relating to the treatment plant;

screening, grit removal, valves of inlet system; site cleaning garden keep-up etc.


ANNX G

STAFFING

(QUANTITATIVELY)


Annexure.”G”

1) Manpower to be Deployed for STP upto 0.99 MLD Cap.

Personnel Nos. Qualification

Assistant Plant Manager 0.33 B.Tech( Civil)

Process Engineer 1 B.Tech.Environmental Engineering

Junior Engineer .25 Diploma in Civil

Chemist 1 M.Sc Micro Biology/Biotechnology

Assistant Chemist 1 B.Sc.

Operators (Electrical) 3 ITI Certificate Holder

Operators (Mechanical) 2 ITI Certificate Holder

Electrician .33 ITI qualified in relevant trade

Fitter 1 ITI qualified in relevant trade

Sewer man/Sweeper 3

Casual Labour 1

Operator Misc. 1 ITI Certificate Holder

Watchman 1

Gardener 1

2) Manpower to be deployed for (Network)

Personnel

Nos (Y) Present Capacity as per actual connection (Z)

Deployment of Labour=Z x Y/designed capacity

Sewer man 2 Nos for every 5 Km length of sewer network 7.95 Km

3

Plumber 1 Nos for every 5 Km length of sewer network 7.95 KM

2

Beldar

1 Nos for every 5 Km length of sewer network 7.95 KM

2

Supervisor

1 Nos for 500 Nos connections and subsequent increase in another Nos for very 500 Nos

1

3) Maintenance Cost for Civil & Mechanical and Electrical for 1 year

Item

Civil @ 0.5% on civil work(including network)

Electrical & Mech.@2% on EME


ANNX H

WORKING SCHEDULE


WORKING SCHEDULE:

ANNX . H

The working schedule of the staff at the STP is given in the Table. Part of the personnel will work in

shifts. External maintenance personnel may have to be contracted to carry out specialized maintenance

activities, such as complex electrical or mechanical repairs.

Working Schedule of Staff at STP

S.

No.

Function Working Schedule at Treatment Plant Site.

1. Assistant Plant Manager 6 days / week

2. Process Engineer 6 days / week

3. Junior Engineer (Civil) 6 days / week

4. Chemist 6/7 days / week

5. Assistant Chemist 6/7 days / week

6. Operator Electrical 7 days / week

7. Operators Mechanical 7 days / week

8. Operator miscellaneous 6 days / week

9 Electrician 7 days / week

10. Fitter 7 days / week

11. Sweeper 7 days / week in three shifts

12. Casual Labour 7 days / week in two shift

13. Watchman 7 days / week

14 Gardener 6 days / week


ANNX I

TERMS AND CONDITIONS RELATED TO DEDUCTIONS ON

ACCOUNT

OF UNDER PERFORMANCE/NON PERFORMANCE OF STP


TERMS AND CONDITIONS RELATED TO DEDUCTIONS ON ACCOUNT OF UNDER PERFORMANCE/NON

PERFORMANCE OF STP: Annexure “I”

In case, if there is any disruption in smooth running of STP and functioning of sewerage system, the contractor will

be solely responsible. The contractor will ensure to remover rectify the defects on priority and make the system

functional. If he fails to do so, the department will have the liabilities to rectify the defects and make the system

functional at contractors risk and cost. A Deduction for non compliance of various parameters shall be levied and

deduced from the monthly bill as per the following table discussed below:

S.NO.

Parameters

Units

Design requirement


Maximum limit

Actual Deviation

Deduction on non compliance


A)

BOD5 mg/l 20 upto 25

If actual is more than25,then a compensation of Rs. 10,000/- shall be levied on the contractor/ firms for first instance of failure of the sample during month. If another sample fails during same month compensation shall be doubled and same procedure be repeated every month afresh.

SS mg/l 30 60

If actual value is more than 60 then impose then a compensation of Rs. 5,000/- shall be levied on the contractor/ firms for first instance of failure of the sample during month. If another sample fails during same month compensation shall be doubled and same procedure be repeated every month afresh.

MLSS mg/l 3000-5000

Within range



If actual values are beyond the range then impose 0.20% of monthly bill on Ist instance and to be doubled for every subsequent failure

F/M ratio d-1

0.05-0.18 Within range

SVI 100-150 Within range

pH 6.8-7.2

2 Manpower

Process Engineer

Nos

Presence required at

each STP for entire month.

If presence is less than 30 days then impose 0.50% of monthly

bill on Ist instance and to be doubled for every subsequent

failure

Chemist Nos


STP for entire month

If found absent then impose 1 % of monthly bill on Ist instance

and to be doubled for every subsequent failure

Operators Nos



If found absent then impose 0.5 % of monthly bill on Ist

instance and to be doubled for every subsequent failure

Sewer man Nos

Presence required at STP for at

least 25 days in a staggered manner with

mini. 75 % strength present



failure


Chowkidar Nos





failure

Casual Labour

Nos.




If presence is less than 15 days then impose 0.25% of monthly bill on Ist instance and to be doubled for every subsequent failure

Junior Engineer

Nos


STP for entire month.



failure

3 Energy

Aerators kWh Up to -10 % of designed cap.

If deviation is more than 10% on the lower side then impose 2% of monthly bill on Ist instance and doubled in every subsequent failure


kWh Up to 10 % of designed cap.


Recycle pumps

kWh

Upto 20 % of designed cap. On the lower

side



kWh

upto 20 % of designed cap. On the lower

side



4 Consumables

Alum Kg

Up to 5 % of designed cap. On the lower

side

If deviation is more than 5% on the lower side then impose 0.5% of monthly bill on Ist instance and doubled in every subsequent failure

Lime Kg


side


Polyelectrolyte

Kg


side


Bleaching Powder

Kg


side


The contractor will maintain the register of daily complaints in respect of leakages, chocking, overflow

from manhole etc. or other related components with STP and Network at plant. The daily report of the

same be intimated to the Engineer-in-Charge at 10.00 AM, failing which a Deduction from monthly bill @

Rs. 100/- per day shall be imposed on the contractor. If, the complaint lodged is not attended within 24

hours of the receipt, compliance of the same so received from the user shall be intimated to the

department on the prescribed performa failing which Deduction @ Rs. 1000/- per day shall be charged

from the contractor, if the scheme remains unattended and the power to waive of such deduction shall

rest with EE concerned if the complaint lodged is found to be in genuine.

The contractor/ firm shall engage minimum labour as stipulated in related documents as per annexure ‘h’

to achieve the desired results and shall submit weekly labour return categories wise, so engaged failing

which Deduction @ 1% of monthly rendered amount worked out shall be levied for breach of this

condition which shall be doubled on every subsequent failure.


The contractor shall be responsible for any illegal sewer connection from sewer network handing over for

maintenance. In case illegal connections detected by the Engineer-in-Charge at any point of time

Deduction @ Rs. 5000/- per illegal connection shall be charged besides other legalities and the contractor

shall remove the illegal connection within 24 hours after its detection/written intimation failing which Rs.

100 per day shall be deducted from the monthly bill.

The contractor shall maintain all the record/log books/register as per Annexure___C___to__K___ at site

which shall invariably be available as and when the any departmental officer visit the STP failing which

deduction at the rate of Rs.500/- shall be effected from the monthly bill and shall be doubled at every

subsequent failure to show the record at site.

The site inspection book shall be maintained at the STP by the firm for recording the remarks/suggestions

by the inspecting authorities which shall be dully certified and numbered by Superintending Engineer

concerned and shall invariably be submitted to JE incharge for preparation of monthly bill failing which

the responsibility for delay in preparation of monthly bill shall rest with the firm.

The contractor/ firm will not be allowed to sublet the work in any case, failing which the contract shall be

terminated immediately and security deposit will be forfeited.

The contract can be terminated by giving 4 months notice by either parties i.e. department and firm. If the

firm is unable to operate and maintain the plant as per satisfaction of Engineer-in-Charge, action will be

taken against the contractor as per various clause of contract.


ANNX J

SCHEDULE OF PREVENTIVE MAINTENANCE of

Centrifugal Pumps


Annexure”J”

SCHEDULE OF PREVENTIVE MAINTENANCE of Centrifugal Pumps

Sr.

No

Name of

section or

part to be

attended

Maintenance to be carried

out

Frequent/time

interval at which

inspection and

maintenance to

be done

Remarks

1. Bearings

Checking of Temperature

with thermometer

Two months Hot ball or roller bearings point

to too much oil or grease: hot

sleeve bearings need more oil or

heavier lubricant. If does not

correct, dissemble and inspect

the bearing alignment of pump

and driver.

2. Glands Changing of Glands

packing

Two months

3. Bearings Lubrication (greasing) Two months Check for saponification resulting

in whitish colour; washout with

kerosene.

4. Gauges Checking of pressure and

vacuum gauges

Three months

5. Valves

Changing of gland packing

in delivery sluice valve,

suction valves, bye pas

valve, reflux valve.

Six months

6. Exhaust

pump

and its

auxiliaries

Checking of gland packing

& its auxiliaries etc.

Six months

7. Impeller Checking of impeller

blades, sleeves, efficiency

rings, bearings, nex ring

impeller nut etc.

Year


Annexure”K”

SCHEDULE OF PREVENTIVE MAINTENANCE

Electrical Motors


Annexure”K”


Electrical Motors

Sr. No Name of section

or part to be

attended

Maintenance to be

carried out

Frequent/time interval

at which inspection and

maintenance to be

done

Remarks

1. Induction Motor

stator and Rotor

Opening of end

covers dust blowing

and checking of air

gap

One month Depending on

the working

conditions &

maintenance

staff available.

2. Slip ring device Cleaning of slip rings

and adjustment of

carbon brushes short

circuiting jaws, oiling

of cluth etc.

One month

3. Bearing Proper lubrication Two months

4. Windings Checking of motor

after taking out its

Rotor, dust blowing

checking of end

connections of

stator. Rotor and

taking insulation test.

No load test before

putting the motor on

load

Two years


Annexure”L”


Secondary Sedimentation Tank/Aeration Tank


Annexure”L”

SCHEDULE OF PREVENTIVE MAINTENANCE Secondary Sedimentation Tank/Aeration Tank

Sl.No Name of

section or part

to be attended

Maintenance to be

carried out

Frequent/time

interval at which

inspection and

maintenance to be

done

Remarks

1. Trolley wheels Lubrication

(greasing)

One month

2. Reduction Gear

Box

Checking and topping

of oil level

Three months This frequency is

applicable for both

aeration tank and

secondary settling

tank

3. Turn Table

mechanism


the oil level

Three months

4. Vertical slip

Ring Motor

Dust blowing.

Checking of carbon

brushes, bearings

etc.

Four months

5. Rail/Track

Adjustment of gap

between two rails &

its alignment etc.

Four months

6. Reduction gear Checking of helical

spur gears condition

Six months

7. Rubber type

wheels iron

wheels.

Checking of wear &

tear alignment & its

positioning

Six months More frequently in

the old installations.

8. M S Scrapers

Tightening of nuts &

bolts, replacement of

broken parts

Year


9. Turn table

mechanism

Checking of its

sprockets chains,

steel balls, gear

boxes etc.


ANNX---- M

DOSAGE CHART OF CHEMICALS

Annexure ”M”

Consumption Of Chemicals (General Guidelines )

Chemicals Dosage in mg/l

Alum 20

Polyelectrolyte 10

Lime 40

Bleaching Powder 10


GUIDELINES FOR SAFETY OPERATION,

EQUIPMENT AND POLICY



Safety Operation, Equipment and Policy

Waste water treatment plant and system operators work both indoors and outdoors and may

be exposed to noise from machinery and to unpleasant odours. Operators work is physically

demanding and often in performed in unclean location. Operators must pay close attention to

safety procedures, due to the presence of hazardous conditions, such as slippery walkways,

dangerous gases, and malfunctioning equipment. Plants operate 24 hours a day, 7 days a week;

therefore, operators work one of three 8 hour shifts, including weekends and holidays, on a

rotational basis. Operators may be required to work overtime.

Wastewater treatment plant operators are exposed to a variety of hazardous chemical agents,

contained within the effluents and the reagents used in the waste water processing, or

generated during the waste waters treatment. These chemical agents may cause acute

poisoning, chemical accidents (e.g., skin burns, injury to the eyes, etc.) damage to the

respiratory system, allergies, dermatitis, chronic diseases, etc. Waste water treatment plant

operators may be injured by slips, trips and falls on wet floors; by falls into treatment ponds,

pits, clarifiers or vats and by splashes of hazardous liquids; they may suffer cuts and pricks from

sharp tools, contusions, etc. They are exposed to hazards related to work in confined spaces.

Other common hazards include electric shock, explosions, entanglement in moving machinery,

etc. These hazards are listed below:-

a. Slips and falls on floors made slippery by water, aqueous solutions or solvents. b. Blows and contusions caused by falling heavy articles, including containers of

chemical reagents, e.g., from overhead conveyers, or by contact with moving machinery of vehicles.

c. Falls into ponds, pits, clarifiers or tanks causing injuries or drowning. d. Hazards related to entry into confined spaces- suffocation due to oxygen deficiency,

poisoning ( e.g. by hydrogen sulphide), etc. e. Burns, by steam or hot vapours, by splashes of hot plating baths, solvents and other

liquids, by contract with hot surfaces (e.g., annealing ovens), etc. f. Electric shock caused by contact with faulty electrical equipment, cables, etc. g. Cuts and pricks by sharp tools sharp edges of articles to be planted sharp deposits

on jigs, etc. h. Injuries (especially of eyes) caused by flying particles, in particular form rotating

brush cleaning or wheel grinding. i. Fire and explosions due to the formation and release of flammable gases during

processing ( e.g., methane, hydrogen). j. Vigorous chemical reactions caused by uncontrolled mixing of chemicals (e.g., if

water is mixed with concentrated sulphuric acid) during the preparation of reagents for wastewater treatment.

k. Acute poisoning caused by various chemicals present in the wastes, used as reagents (.e.g., gaseous chlorine), or released during the treatment; a particular hazard is caused by the possible release of a number of poisonous gases, e.g., hydrogen-cyanide (from metal plating or heat treatment wastes upon acidification), hydrogen-sulphide, etc.


l. Acute intoxication caused by erroneous drinking of untreated wastewater. m. Poisoning by phosgene, which may be formed if a worker smokes in the presence of

chlorinated solvent various, or if welding or other flames or arcs are used. n. Chemical burns by corrosive liquids Damage to eyes by splashes of irritating or

corrosive liquids. Physical Hazards:

1. Exposure to excessive noise levels from mechanical equipment. 2. Exposure to UV radiation. 3. Exposure to adverse weather (low or high temperature, rain, storms, etc.) 4. Chemical Hazards:

1. Chronic poisoning by inhalation or ingestion of many of the chemicals used in waste water treatment .

2. Dermatitis caused by exposure of the skin to waste waters, cleaning formulations, acid and alkaline solutions, etc.

3. Irrigation of mucous membranes (in particular of the respiratory tract) by acid or alkaline vapours or aerosols, by hydrogen sulphide, and other substances.

4. Latex allergy caused by the use of latex gloves. Biological Hazards:

1. Diseases caused by infectious agents (bacteria, viruses, protozoa, helminthes and fungi) present in the raw domestic wastewater (mainly from human origin) and in agricultural wastes.

2. Diseases caused by contact with the toxins released by the infectious agents. 3. Diseases caused by insects or rodents proliferating in the sludge drying beds. Ergonomic, psychosocial and organizational factors

1. Musculoskeletal injuries caused by overexertion while handling heavy loads, such as containers of chemicals, or by awkward working postures (including frequent bending), etc.

2. Discomfort and psychological problems related to prolonged wear of protective clothing (including heavy boots, aprons and other impermeable pieces), to the bad smells of the wastes, to the feeling of working with “soiled” liquids in a “dirty” and not too “respectable” occupation, and to the apprehensions caused by awareness of the dangers of the workplace.

Safety Policy:

1. Use safety shoes or boots with non-slip soles. 2. Wear personal protective equipment and chemical resistant clothing to avoid

exposure of skin or eyes to corrosive and / or polluted solids, liquids, gases or vapours.

3. Do NOT mix chemicals without the supervision of a qualified chemist or safety professional.

4. Obey all safety instructions regarding the storage, transport handling or pouring of chemicals.


5. Check electrical equipment for safety before use; verify that all electric cables are properly insulated; take faulty or suspect electrical equipment to a qualified electricity technician for testing and repair.

6. Wear safety goggles in all cases where the eyes may be exposed to dust, flying particles, or splashes of harmful liquids.

7. Wear respirator, or gas mask, when exposed to harmful aerosols, dusts, vapours or gases.

8. Take extreme care when handling highly corrosive agents such as liquid or gaseous chlorine, concentrated acids or alkalis, or when toxic gases may be emitted from the reagents, etc.

9. Obey all safety instructions concerning entry into confined spaces, e.., check atmosphere for oxygen or for poisonous gases, use respiratory protection equipment if needed, have a co-worker stand guard in case of need for help, etc.

10. Do not smoke, eat or drink in areas where chemical or biological contamination may be expected.

11. Use non-latex gloves if sensitivity to latex has been diagnosed. 12. All workers should undergo periodic examinations by occupational physician to

reveal early symptoms of possible chronic effects or allergies. 13. Learn and use safe lifting and moving techniques for heavy or awkward loads

such as containers of chemicals; use mechanical aids to assist in lifting. Personnel Protective Equipment (PPE) and other Safety Needs

While planning the list of PPE, the following types of situations should be catered for:

1. Impact / Penetration / Compression while doing maintenance tasks 2. Chemical handing. 3. Heat / cold and wetting 4. Harmful dust 5. Oxygen deficiency 6. Obnoxious odours of decomposing matter 7. Hydrogen Sulphide presence 8. Lift (Optical) radiation 9. Biological exposure from raw / treated effluents and sludge handling. 10. Noise of machines and vibrations. 11. Electric shock 12. Rain / Storm. General List of PPE:

1. Safety Boots with non-skid soles and Steel Toes. 2. Electrical Hazard safety Tow shoes. 3. Gas Masks and Face Shields. 4. Oxygen meters for ascertaining type of atmosphere in a confined area. 5. Single use Ear Plugs / Ear muffs 6. Safety Goggles 7. Helmets / Hard Hats 8. Latex Rubber / Butyl Rubber / Fabric / Chemical Resistant Gloves 9. Overall Clothing


10. Aprons for laboratory Personnel. 11. Safety Belts 12. First Aid Box 13. Fire extinguishers 14. Respiratory Protective mask with man pack cylinders Chlorine, its Handling and Leakage Detection and Action Chlorine:

Pure chlorine comes in two forms: gas and liquid. Chlorine gas is easily liquefied gas under

pressure. Chlorine gas has a disagreeable, sharp, pungent, penetrating odor. In airborne

concentrations above 1000 parts per million (ppm) it has a greenish yellow colour. In smaller

concentrations it is colorless. Chlorine gas is 2½ times heavier than air and tends to flow

downhill and pool in lower areas. Wind and weather, however, will cause a chlorine gas cloud

to disperse, spreading it in all directions, even uphill.

Liquid chlorine is a transparent, amber coloured, oily fluid that is 1½ times heavier than water.

Liquid chlorine has a high compression ration. The ratio of liquid to gas is 1 to 460, which means

that 1 L of liquid chlorine expands to form 460 L of pure chlorine gas. The maximum allowable

concentration of chlorine a person can be exposed to in an eight hour period is 0.5 ppm

Uses:

Chlorine gas is mainly used as a disinfectant in :

1. Swimming pools 2. Water treatment plants 3. Sewage treatment 4. Community water supplies, including water used for irrigation Chlorine is also used in:

1. Pulp and paper industries. 2. Pool chemical products 3. Cleaning products 4. Mining processes 5. Bleach manufacturing 6. Plastic manufacturing Health aspects:

Chlorine is corrosive. It can burn moist body surfaces such as the eyes, nose, throat, lungs and

wet skin because it forms harmful acids when it reacts with moisture. Repeated exposure to

chlorine does not produce an immunity or tolerance. Long term exposure to low

concentrations by chlorine may cause a gradual decrease in lung efficiency. A single exposure to

a high concentration can cause the same effect.

Toxic effects of chlorine (Chlorine gas is not visible as a greenish yellow cloud at concentrations

below 1000 ppm)


Concentration Effect

0.03 – 0.1 ppm Range of odour threshold ( many specify this as o.o8 ppm)

1 – 3 ppm May cause mild irrigation of the eyes, nose, and throat.

3-5 ppm Stinging or burning in eyes, nose and throat; may cause headache,

watering eyes, sneezing, coughing, breathing difficulty, bloody nose and

blood tinged sputum

5 ppm or more Severe irrigation of the eyes, nose and respiratory tract.

14-25 ppm May be fatal after 30 minutes of exposure

25 ppm or more Immediate breathing difficulty resulting in pulmonary edema (fluid

build-up in lungs), possible causing suffocation and death 1000 ppm or

more fatal after a few breaths

1000 ppm or more Fatal after a few breaths

Exposure limits of chlorine


0.5 ppm Maximum allowable concentration averaged over an eight hour period

1 ppm Maximum allowable short term exposure ( 15 minutes)

10 ppm or

more

Immediately dangerous to Life and Health as published by National Institute

for Occupational Safety and Health in the United States (NIOSH)

Written safe work procedures while handling Chlorine equipment:

Changing chlorine cylinders:

a. Turn on the light and visually ensure that the room is safe to enter ( there may be visible signs of damage).

b. Put on appropriate personal protective equipment (be specific about the type of equipment). This procedure requires a respirator other than an escape respirator.

c. Turn on the exhaust ventilation before entering the room. d. Close the main chlorine container valve. e. Allow the system to purge itself of chlorine. Ensure that the float drops to the

bottom of the feed rate indicator (rotameter). Verify that there is a high vacuum and that the weight scale reads zero.


f. Loosen the chlorinator (auxiliary valve or vacuum regulator) and remove it from the empty cylinder.

g. Replace the cylinder cap on the empty chlorine cylinder and remove the cylinder to secured storage.

h. Secure the new cylinder into place. i. Remove the protective hood from the new cylinder. j. Ensure that there is no chlorine leaking from the packing gland. Use ammonia

vapors from the ammonia test bottle, which contains a strong ammonia solution. k. Ensure that the cylinder valve is closed. Do not open the valve yet. l. Remove the cylinder outlet cap and check that the cylinder outlet face is clean and

smooth. m. Using a new washer, connect the vacuum regulator or the yoke assembly (be specific

for the system is use) to the valve outlet using the supplied wrench only.

Note: Never use oil based material or water to clean

the mating surfaces.

n. Crack open the chlorine cylinder valve and then quickly close it again. This will let enough chlorine into the lines to charge them. The valve should open with no more than a sharp rap from the heel of your hand. Never use a “helper: wrench or a larger wrench than the one supplied. If the valve will not open, carefully loosen the packing gland slightly.

o. Check all the connections you have made to ensure there are no leaks. Use the vapor from the ammonia test bottle (see step 10). If a leak is indicated, activate the leak control procedure (see paragraph serial 2 in leak detection and control below).

p. When no leaks are indicated, open the chlorine cylinder valve no more than half a turn and leave the cylinder wrench on the valve.

q. Open any additional system valves (be specific for your facility) and test for leaks as each stage is charged with chlorine.

r. Check the leaks again with the ammonia test bottle to be sure that everything is in order.

s. Ensure that the alarm system is function. t. Turn off the exhaust ventilation and lights and close the door when you leave. u. Remove your respirator and other personal protective equipment. Leak detection and control

It has two components:

1. What to do if a leak is indicated after a cylinder change? 2. What to do if the chlorine alarm is activated during routine operation of the system? 3. If the ammonia test indicates a leak after a cylinder change, follow these steps ( Note that

the worker will already be wearing a respirator): a) Immediately close the main cylinder valve.


b) As long as the monitor reads less than 10 ppm, he cylinder hook-up procedure may be repeated.

c) Open (and close) the main cylinder valve and repeat the ammonia test. d) If a leak is still indicated, make a third and final attempt to get a good seal using a new lead

washer. e) If the leak cannot be corrected after three attempts, remove the cylinder from service and

contact the supplier. Ensure that there is no leak from this cylinder with the main valve closed. A different cylinder must be connected to the chlorination system.

f) Leave the chlorine room and remain nearby to restrict access to the room or provide other assistance, as directed, until the chlorine alarm has automatically shut off.

4. If the chlorine alarm has been activated during routine operation of the system, at least two

people must respond. Follow these steps: a) Approach the location cautiously. b) If chlorine gas can be smelled in the open, immediately leave the area and activate full

emergency procedures. Do not attempt to turn on the exhaust ventilation.* c) If there is no smell of chlorine gas outside the room, put on respiratory protection and check

the monitor readout. d) If the chlorine concentration is less than 10 ppm: i) Put on the appropriate personal protective equipment. ii) Enter the room and close the main cylinder valve. iii) Turn on the ventilation system and leave the area until the alarm stops. iv) While still wearing the respirator, enter the room after the alarm has stopped, isolate

the leak, and perform necessary repairs. Remember that all chlorine lines must be free of oil, grease and moisture before re-opening the chlorine cylinder.

e) If the continuous monitor indicates a chlorine concentration greaten than 10 ppm, immediately leave the area and activate full emergency procedures. Do not turn on the ventilation system* and do not wait downwind of the building for help to arrive.

Note: Never apply water to a chlorine leak. Moist chlorine is more corrosive than dry chlorine

and the leak will worsen rapidly if water is applied to it. Remember also that a chlorine leak never

gets better, it always gets worse.

Safety in Handling of Corrosive substances such as Acids, Alkalis

General Characteristics

1. Acids and Alkalis fall into the category of Corrosive chemicals. Corrosives are most commonly acids and alkalis, but many other materials can be severely damaging to living tissue.

2. Corrosives can cause visible destruction or irreversible alterations at the site of contact. Inhalation of the vapor or mist can cause severe bronchial irritation. Corrosives are particularly damaging to the skin and eyes.


3. Certain substances considered non-corrosive in their natural dry state are corrosive when wet such as when in contact with moist skin or mucus membranes. Examples of these materials are lithium chloride, halogen fluorides, and alkyl iodide.

4. Sulphuric acid is a very strong dehydrating agent and nitric acid is a strong oxidizing agent. Dehydrating agents can cause severe burns to the eyes due to their affinity for water. Few examples of Corrosive substances

1. Sulphuric acid 2. Chromic acid 3. Stannic chloride 4. Ammonium bi-fluoride 5. Bromine 6. Ammonium hydroxide

Use and Storage of Corrosives

1. Always store acids separately from bases. Also, store acids in acid storage cabinets away from flammables since many acids are also strong oxidizers.

2. Do not work with corrosives unless an emergency shower and continuous flow eyewash are available.

3. Add acid to water, but never add water to acid. This is to prevent splashing from the acid due to the generation of excessive heat as the two substances mix.

4. Never store corrosives above eye level. Store on a low shelf or cabinet. 5. It is a good practice to store corrosives in a tray or bucket to contain any leakage. 6. When possible, purchase corrosives in containers that the coated with a protective

plastic film that will minimize the danger to personnel if the container is dropped. 7. Store corrosives in a wooden cabinet or one that has a corrosion resistant lining.

Corrosives stored in an ordinary metal cabinet will quickly damage it. If the cabinet supports that hold up the shelves become corroded, the result could be serious. Acids should be stored in acid storage cabinets specially designed to hold them and Nitric acid should be stored in a separate cabinet or compartment. Use and Storage of a Most Corrosive substance e.g. Hydrofluoric Acid

1. Hydrofluoric acid is extremely hazardous and deserves special mention. Hydrofluoric acid can cause severe burns and inhalation of anhydrous hydrogen fluoride can be fatal. Initial skin contact with hydrofluoric acid may not produce any symptoms.

2. Only persons fully trained in the hazards of hydrofluoric acid should use it. 3. Always use hydrofluoric acid in a properly functioning fume hood. Be sure to wear

personal protective clothing! 4. If you suspect that you have come in direct contact with hydrofluoric acid : wash the

area with water for at least 15 minutes, remove clothing and then promptly seek medical attention. If hydrogen fluoride vapors’ are inhaled, move the people immediately to an uncontaminated atmosphere (if safe to do so), keep the person warm, and seek prompt medical attention.

5. Never store hydrofluoric acid in a glass container because it is incompatible with glass.


6. Store hydrofluoric acid separately in an acid storage cabinet and keep only that amount necessary in the lab.

7. Creams for treatment of hydrofluoric acid exposure are commercially available. Health Hazards Associated with Corrosives:

1. All corrosives possess the property of being severely damaging to living tissues and also attach other materials such as metal.

2. Skin contact with alkali metal hydroxides, e.g., sodium hydroxide and potassium hydroxide, is more dangerous that with strong acids. Contact with alkali metal hydroxides normally causes deeper tissue damage because there is less pain than with an acid exposure. The exposed person may not wash it off thoroughly enough or seek prompt medical attention.

3. All hydrogen halides (HF, HCI, HBr and HI) are acids that are serious respiratory irritants and also cause severe burns. Hydrofluoric acid is particularly dangerous. At low concentrations, hydrofluoric acid does not immediately show any signs or symptoms upon contact with skin. It may take several hours for the hydrofluoric acid to penetrate the skin before your would notice a burning sensation. However, by this permanent damage, such a s second and third degree burns with scarring, can result. Acute Health Effects:

Inhalation

Irritation of mucus membranes, difficulty in breathing, fits of coughing,

pulmonary edema

Ingestion Irrigation and burning sensation of lips, mouth and throat; pain in swallowing;

swelling of the throat; painful abdominal cramps; vomiting; shock; risk of

perforation of the stomach

Skin

contact

Burning, redness and selling, painful blisters, profound damage to tissues, and

with alkalis; a slippery, soapy feeling.

Eye

Contact

Stinging, watering of eyes, swelling of eyelids, intense pain, ulceration of eyes,

loss of eyes or eyesight.

Chronic Health Effects:

Symptoms associated with a chronic exposure vary greatly depending on the chemical. For

example, the chronic effect of hydrochloric acid is damage to the teeth; the chronic effects of

hydrofluoric acid are decreased bone density, fluorosis, and anemia; the chronic effects of

sodium hydroxide are unknown.


First Aid:

Inhalation Remove person from source of contamination if safe to do so. Get medical

attention. Keep person warm and quiet and do not leave unattended.

Ingestion Remove person from source of contamination if safe to do so. Get medical


Skin

contact

Remove person from source of contamination and take immediately to an

emergency shower or source of water. Remove clothing, shoes, socks and

jewellery from affected areas as quickly as possible, cutting them off if necessary.

Be careful not to get any chemical on your skin or to inhale the vapors. Flush the

affected area with water for a minimum of 15 minutes. Get medical attention.

Eye

contact

Areas as quickly as possible, cutting them off if necessary. Be careful not to get

any chemical on your skin or to inhale the vapors’. Flush the affected area with

water for a minimum of 15 minutes. Get medical attention.

Eye

contact


any chemical on your skin or to inhale the vapors. Flush the affected area with


Personal Protective Equipment

Always wear the proper gloves when working with acids. Neoprene and rubber gloves are

effective against most acids and bases. Polyvinyl chloride (PVC) is also effective for most acids.

A rubber coated apron and goggles should also be worn. If splashing is likely to occur, wear a

face shield over the goggles. Always use corrosives in a chemical fume hood.

General Chemicals used in Sewage / Effluent Treatment:


1. Neutralization / pH correction: Hydrochloric acid, Sodium Hydroxide / Lime. 2. Coagulant / settling Aids: Aluminum Sulphate, Ferric Aluminum Sulphate, Ferric

Chloride, these may be independent or in combination with Poly Electrolytes (Polymers).

3. For specific Ion removal, chemicals required as per chemistry of treatment. 4. Nutrients: Urea, Di-ammonium Phosphate. 5. Disinfectant: Chlorine, Bleaching Powder (Sodium Hypochlorite), Ozone. 6. Adsorption / Absorption: Activated carbon. 7. Ion Exchange – based on the specific ion to be removed.

Executive Engineer, I&PH Division No.II, Kullu. at

Bhuntar



Name of work:- A/R & M/O of Sewerage system to Bhunter town in Tehsil & Distt. Kullu HP. (SH:- Annual O&M of 0.87 MLD Zone E-F including sewer network


f) BOD5 at 5 days at 20 degree centigrade Less than 20mg/Liters. g) Suspended solids. Less than 30mg/Liters h) PH value. 6.5 to 8

i) Oil & Grease Less than 10 mg/liters. j) COD value less than 250 mg/L












9 Sewerman/Sweeper

10 Casual labour


12 Gardener








j) Daily log book. The logbook should contain daily flow of influent, treated effluent, amount


k) Maintenance record of all equipment’s on the proforma SHOULD BE KEPT AS PER DIRECTIONS OF Engineer-in-charge.

l) Oil refilling schedule.

m) Inventory of Chemicals.

n) Inventory of spares.

o) Inventory of Laboratory chemicals and glassware.

p) Analysis/results of samples collected at inlet & outlet. The record of COD, PH, and Suspended solids, total dissolved Solids, Oil & Grease and BOD to be maintained.

q) Laboratory of STP.

r) In addition to above record as per daily record book maintained by the contractor/Firm .




























S.N Name of

employee


Designation

Permanent Address


EPF No. of employee

Amount deducted

Remarks



















































f) COD value less than 250 mg/L

g) Other effluent standards as per the guidelines laid down by HP Pollution Control Board. 2. Operating procedure for different components of the STP/Sewerage scheme shall be as per Annexure “A”







annexure “D”.






of every

month.)


























glassware.
























writing.

















































as under; ------------------ ANNX. A



C. Operation of manual screen channel 6. There are two screen channels, one working and one standby. By suitable operation of






D. Maintenance of manual screen channel 8. Cleaning of screen is done with a rake. Waste has to be removed from the bottom of the





GRIT CHAMBER


C. Operation of Grit Chamber










grit in the daily status report. 20. The cleaned grit channel should be left dry until next use. D. Maintenance of Grit Chamber 10. Every two days or depending upon the amount of grit accumulation, the standby grit








E. Start-up Procedure Before start-up, all components of the system must be checked according to the manufacturer’s

instructions.









completed:-






mg/1. F. Normal Procedure 3. The normal plant operation shall be reached in 3 to 4 weeks. 4. Surface aerators and return sludge pumps should run continuously and after maintaining


G. Operating Guidelines The important parameters for the efficient operation of the extended aeration tank are




sludge pumps.























achieved. This will become the stock solution. 8. Start the dosing pumps. H. Shut-down procedure 4. Flush the dosing lines. 5. Stop the agitator. 6. Clean and drain the tank if required.









ANNX B


VARIOUS PARAMETERS


Annexure”B”


Test/

Parameter


AERATION

TANK(s)

INLET TO

SST

OUTLET

SST

FINAL

DISCHARGE

pH

TS

SS

TDS

DO

TEMP.

BOD

COD

O&G

Cl2 DEMAND

RESIDUAL

Cl2

MLSS

MLVSS

SVI SLUDGE

ANY

SPECIFIC

As required


ANNX C



Annexure”C”


DATE:

Name of STP:

Sr.

No.



shifts.



Started

hours and

energy

reading

Closed hours

and energy

reading

Started

hour

and energy

reading

Closed hours

and energy

reading

Started

hours

and energy

reading

Closed hours

and energy

reading


Screen

No.1

Screen No. 2 Screen

No.1

Screen No. 2 Screen

No.1

Screen No. 2


Screen

No.1

Screen No. 2 Screen

No.1

Screen No. 2 Screen

No.1

Screen No. 2


Grit

Chamber

No.1

Grit

Chamber

No.2

Grit

Chamber

No.1

Grit

Chamber

No.2

Grit

Chamber

No.1

Grit Chamber

No.2


Grit

Chamber

No.1

Grit

Chamber

No.2

Grit

Chamber

No.1

Grit

Chamber

No.2

Grit

Chamber

No.1

Grit Chamber

No.2


No. of

hours

Pump 1 is

in

operation.

No. of hours

Pump 2 is in

operation.

No. of

hours

Pump 1 is

in

operation.

No. of hours

Pump 2 is in

operation.

No. of

hours

Pump 1 is

in

operation.

No. of hours

Pump 2 is in

operation.





No. of

hours

Pump 1 is

in

operation.

No. of hours

Pump 2 is in

operation.

No. of

hours

Pump 1 is

in

operation.

No. of hours

Pump 2 is in

operation.

No. of

hours

Pump 1 is

in

operation.

No. of hours

Pump 2 is in

operation.






CHAMBER



COLLECTION CHAMBER















B) GRIT CHAMBER








taken.



action taken

C) AERATION TANK










action taken




















F) FILTER PRESS








H CENTRIFUGAL PUMPS

















iv) Check bearings











ANNX D



CONSUMABLES


Annexure”D”

S.NO.




BOD5 mg/l 20

SS mg/l 30

MLSS mg/l 3000-5000


F/M ratio d-1

0.05-0.18

SVI 100-150

pH 6.8-7.2

2 Manpower


Chemist Nos

Operators Nos

Sewer man Nos

Chowkidar Nos

Casual Labour Nos

3 Energy

Aerators kWh


kWh

Recycle pumps kWh


kWh


4 Consumables

Alum Kg

Lime Kg

Polyelectrolyte Kg

Bleaching Powder Kg


ANNX E









S.No. Maintenance

Activities

Week

1 2 3 4 5 6 49 50 51 52

A. Inlet & Screen

Chamber


for erosion and


necessary.


replace the damaged

bars, if necessary.


bars.


wheel barrows.

B Grit Chamber


of the proportional

weir.


for erosion and


necessary.


the grit channel.


and ladders.

C Aeration Tank


for erosion and


necessary


the incoming /

outgoing pipes and

remove the

obstruction.



aerator.




crest.


ladders & chequered

plates.

6. Check for proper

satisfactory

performance of

aeration tank.



for erosion and


necessary.


the incoming /

outgoing pipes and

remove the

obstruction.



crest.



plates.


functioning of the

secondary clarifier

equipment.




necessary.

7. Check for proper

satisfactory

performance of

secondary clarifier

tank.

E. Flash mixer /

Clariflocculator

tank.



crest.



plates.


for erosion and


necessary.


the incoming /

outgoing pipes and

remove the


obstruction.

5. Check for proper



equipment.


to the scraper and

repair / replace if

necessary.

7. Check for proper

satisfactory


mixer and


F Filter Press



than 6 kgs/cm²

2. Check that the

temperature of the


95°C



wrinkled.

G All Pump Houses /

Buildings


for erosion and


necessary.



plates.

3. Check electrical

connections and

wiring, remove and

replace corroded

connections.

H Centrifugal Pumps


discharge pressure.

2. Check bearing

temperature.


current of motor.

4. Observe for any

abnormal noise or

variation.


of external sealing

liquid if

6. Check bearing


if contaminated or


blackened due to

overheating.


leakage. Normal


minute is

recommended

8. Check pump

alignment.


securing nuts and

bolts.


instruments i.e.

pressure gauges and

flow indicators.


I Mixers for dosing

tanks

1 Lubrication of


2. Check coupling

alignment.


box

4. Check bearings.




parts.

7. Tightness of all

hardware

8. All electrical

connections.



moving parts.

2. Clean the rubber



of the spindle.




ANNX F

STAFFING



INTRODUCTION




Figure below:

Management Level

Operational Level

Labour Level


Management level

Operation level








Chemist

Assistant Chemist


Watchman

Gardener















Time to be

spent

6/7 days / week.

Number 1+4

Detailed

Tasks














piping.

Time to be

spent

6 days / week.

Number 1

Detailed

Tasks







Function Chemist



analysis of STP.

Time to be

spent

6/7 days / week.

Number 4

Detailed

Tasks








Level BSc. Medical


Time to be

spent

6 /7days / week.

Number 4

Detailed

Tasks






Time to be

spent


Number 24

Detailed

Tasks




ANNX G

STAFFING

(QUANTITATIVELY)


Annexure.”G”





Junior Engineer 0.25 Diploma in Civil





Electrician 0.33 ITI qualified in relevant trade


Sewer man/Sweeper 3

Casual Labour 1


Watchman 1

Gardener 1


Personnel




3

Plumber 1 Nos for every 5 Km length of sewer network 6.78 Km

1

Beldar

1 Nos for every 5 Km length of sewer network 6.78 Km

1

Supervisor


1


Item




ANNX H

WORKING SCHEDULE


WORKING SCHEDULE:

ANNX . H





S.

No.

















ANNX I


ACCOUNT










S.NO.

Parameters

Units

Design requirement


Maximum limit

Actual Deviation



A)



SS mg/l 30 60


MLSS mg/l 3000-5000

Within range




F/M ratio d-1



pH 6.8-7.2

2 Manpower

Process Engineer

Nos





failure

Chemist Nos





Operators Nos





Sewer man Nos






failure


Chowkidar Nos





failure

Casual Labour

Nos.





Junior Engineer

Nos





failure

3 Energy






Recycle pumps

kWh


side



kWh


side



4 Consumables

Alum Kg


side


Lime Kg


side


Polyelectrolyte

Kg


side


Bleaching Powder

Kg


side


































ANNX J


Centrifugal Pumps


Annexure”J”


Sr.

No

Name of

section or

part to be

attended


out

Frequent/time

interval at which

inspection and

maintenance to

be done

Remarks

1. Bearings


with thermometer







and driver.


packing

Two months



kerosene.


vacuum gauges

Three months

5. Valves





Six months

6. Exhaust

pump

and its

auxiliaries



Six months




impeller nut etc.

Year


Annexure”K”


Electrical Motors


Annexure”K”


Electrical Motors


or part to be

attended

Maintenance to be

carried out



maintenance to be

done

Remarks

1. Induction Motor

stator and Rotor

Opening of end

covers dust blowing

and checking of air

gap


the working

conditions &

maintenance

staff available.


and adjustment of



of cluth etc.

One month




Rotor, dust blowing

checking of end

connections of

stator. Rotor and


No load test before


load

Two years


Annexure”L”




Annexure”L”


Sl.No Name of

section or part

to be attended

Maintenance to be

carried out

Frequent/time

interval at which

inspection and

maintenance to be

done

Remarks


(greasing)

One month

2. Reduction Gear

Box


of oil level


applicable for both

aeration tank and

secondary settling

tank

3. Turn Table

mechanism


the oil level

Three months

4. Vertical slip

Ring Motor

Dust blowing.

Checking of carbon

brushes, bearings

etc.

Four months

5. Rail/Track

Adjustment of gap

between two rails &

its alignment etc.

Four months



Six months

7. Rubber type

wheels iron

wheels.

Checking of wear &


positioning



8. M S Scrapers



broken parts

Year


9. Turn table

mechanism

Checking of its

sprockets chains,

steel balls, gear

boxes etc.


ANNX---- M


Annexure ”M”



Alum 20

Polyelectrolyte 10

Lime 40

Bleaching Powder 10















































Safety Policy:






























Uses:










below 1000 ppm)







blood tinged sputum











10 ppm or

more


























the worker will already be wearing a respirator): g) Immediately close the main cylinder valve.


h) As long as the monitor reads less than 10 ppm, he cylinder hook-up procedure may be repeated.

i) Open (and close) the main cylinder valve and repeat the ammonia test. j) If a leak is still indicated, make a third and final attempt to get a good seal using a new lead

washer. k) If the leak cannot be corrected after three attempts, remove the cylinder from service and


l) Leave the chlorine room and remain nearby to restrict access to the room or provide other assistance, as directed, until the chlorine alarm has automatically shut off.


people must respond. Follow these steps: f) Approach the location cautiously. g) If chlorine gas can be smelled in the open, immediately leave the area and activate full

emergency procedures. Do not attempt to turn on the exhaust ventilation.* h) If there is no smell of chlorine gas outside the room, put on respiratory protection and check

the monitor readout. i) If the chlorine concentration is less than 10 ppm: v) Put on the appropriate personal protective equipment. vi) Enter the room and close the main cylinder valve. vii) Turn on the ventilation system and leave the area until the alarm stops. viii) While still wearing the respirator, enter the room after the alarm has stopped, isolate


j) If the continuous monitor indicates a chlorine concentration greaten than 10 ppm, immediately leave the area and activate full emergency procedures. Do not turn on the ventilation system* and do not wait downwind of the building for help to arrive.






























Inhalation


pulmonary edema




Skin

contact



Eye

Contact









First Aid:





Skin

contact






Eye

contact




Eye

contact















Bhuntar



Name of work:- A/R & M/O of Sewerage system to Bhunter town in Tehsil & Distt. Kullu HP. (SH:- Annual O&M of 0.46 MLD Zone B-C including sewer network


k) BOD5 at 5 days at 20 degree centigrade Less than 20mg/Liters. l) Suspended solids. Less than 30mg/Liters m) PH value. 6.5 to 8

n) Oil & Grease Less than 10 mg/liters. o) COD value less than 250 mg/L












9 Sewerman/Sweeper

10 Casual labour


12 Gardener








s) Daily log book. The logbook should contain daily flow of influent, treated effluent, amount


t) Maintenance record of all equipment’s on the proforma SHOULD BE KEPT AS PER DIRECTIONS OF Engineer-in-charge.

u) Oil refilling schedule.

v) Inventory of Chemicals.

w) Inventory of spares.

x) Inventory of Laboratory chemicals and glassware.

y) Analysis/results of samples collected at inlet & outlet. The record of COD, PH, and Suspended solids, total dissolved Solids, Oil & Grease and BOD to be maintained.

z) Laboratory of STP.

aa) In addition to above record as per daily record book maintained by the contractor/Firm .




























S.N Name of

employee


Designation

Permanent Address


EPF No. of employee

Amount deducted

Remarks



















































h) COD value less than 250 mg/L

i) Other effluent standards as per the guidelines laid down by HP Pollution Control Board. 2. Operating procedure for different components of the STP/Sewerage scheme shall be as per Annexure “A”







annexure “D”.






of every

month.)


























glassware.
























writing.

















































as under; ------------------ ANNX. A



E. Operation of manual screen channel 11. There are two screen channels, one working and one standby. By suitable operation of






F. Maintenance of manual screen channel 15. Cleaning of screen is done with a rake. Waste has to be removed from the bottom of the





GRIT CHAMBER


E. Operation of Grit Chamber










grit in the daily status report. 30. The cleaned grit channel should be left dry until next use. F. Maintenance of Grit Chamber 19. Every two days or depending upon the amount of grit accumulation, the standby grit








I. Start-up Procedure Before start-up, all components of the system must be checked according to the manufacturer’s

instructions.









completed:-






mg/1. J. Normal Procedure 5. The normal plant operation shall be reached in 3 to 4 weeks. 6. Surface aerators and return sludge pumps should run continuously and after maintaining


K. Operating Guidelines The important parameters for the efficient operation of the extended aeration tank are




sludge pumps.























achieved. This will become the stock solution. 12. Start the dosing pumps. L. Shut-down procedure 7. Flush the dosing lines. 8. Stop the agitator. 9. Clean and drain the tank if required.









ANNX B


VARIOUS PARAMETERS


Annexure”B”


Test/

Parameter


AERATION

TANK(s)

INLET TO

SST

OUTLET

SST

FINAL

DISCHARGE

pH

TS

SS

TDS

DO

TEMP.

BOD

COD

O&G

Cl2 DEMAND

RESIDUAL

Cl2

MLSS

MLVSS

SVI SLUDGE

ANY

SPECIFIC

As required


ANNX C



Annexure”C”


DATE:

Name of STP:

Sr.

No.



shifts.



Started

hours and

energy

reading

Closed hours

and energy

reading

Started

hour

and energy

reading

Closed hours

and energy

reading

Started

hours

and energy

reading

Closed hours

and energy

reading


Screen

No.1

Screen No. 2 Screen

No.1

Screen No. 2 Screen

No.1

Screen No. 2


Screen

No.1

Screen No. 2 Screen

No.1

Screen No. 2 Screen

No.1

Screen No. 2


Grit

Chamber

No.1

Grit

Chamber

No.2

Grit

Chamber

No.1

Grit

Chamber

No.2

Grit

Chamber

No.1

Grit Chamber

No.2


Grit

Chamber

No.1

Grit

Chamber

No.2

Grit

Chamber

No.1

Grit

Chamber

No.2

Grit

Chamber

No.1

Grit Chamber

No.2


No. of

hours

Pump 1 is

in

operation.

No. of hours

Pump 2 is in

operation.

No. of

hours

Pump 1 is

in

operation.

No. of hours

Pump 2 is in

operation.

No. of

hours

Pump 1 is

in

operation.

No. of hours

Pump 2 is in

operation.





No. of

hours

Pump 1 is

in

operation.

No. of hours

Pump 2 is in

operation.

No. of

hours

Pump 1 is

in

operation.

No. of hours

Pump 2 is in

operation.

No. of

hours

Pump 1 is

in

operation.

No. of hours

Pump 2 is in

operation.






CHAMBER



COLLECTION CHAMBER















B) GRIT CHAMBER








taken.



action taken

C) AERATION TANK










action taken




















F) FILTER PRESS








H CENTRIFUGAL PUMPS

















iv) Check bearings











ANNX D



CONSUMABLES


Annexure”D”

S.NO.




BOD5 mg/l 20

SS mg/l 30

MLSS mg/l 3000-5000


F/M ratio d-1

0.05-0.18

SVI 100-150

pH 6.8-7.2

2 Manpower


Chemist Nos

Operators Nos

Sewer man Nos

Chowkidar Nos

Casual Labour Nos

3 Energy

Aerators kWh


kWh

Recycle pumps kWh


kWh


4 Consumables

Alum Kg

Lime Kg

Polyelectrolyte Kg

Bleaching Powder Kg


ANNX E









S.No. Maintenance

Activities

Week

1 2 3 4 5 6 49 50 51 52

A. Inlet & Screen

Chamber


for erosion and


necessary.


replace the damaged

bars, if necessary.


bars.


wheel barrows.

B Grit Chamber


of the proportional

weir.


for erosion and


necessary.


the grit channel.


and ladders.

C Aeration Tank


for erosion and


necessary


the incoming /

outgoing pipes and

remove the

obstruction.



aerator.




crest.


ladders & chequered

plates.

6. Check for proper

satisfactory

performance of

aeration tank.



for erosion and


necessary.


the incoming /

outgoing pipes and

remove the

obstruction.



crest.



plates.


functioning of the

secondary clarifier

equipment.




necessary.

7. Check for proper

satisfactory

performance of

secondary clarifier

tank.

E. Flash mixer /

Clariflocculator

tank.



crest.



plates.


for erosion and


necessary.


the incoming /

outgoing pipes and

remove the


obstruction.

5. Check for proper



equipment.


to the scraper and

repair / replace if

necessary.

7. Check for proper

satisfactory


mixer and


F Filter Press



than 6 kgs/cm²

2. Check that the

temperature of the


95°C



wrinkled.

G All Pump Houses /

Buildings


for erosion and


necessary.



plates.

3. Check electrical

connections and

wiring, remove and

replace corroded

connections.

H Centrifugal Pumps


discharge pressure.

2. Check bearing

temperature.


current of motor.

4. Observe for any

abnormal noise or

variation.


of external sealing

liquid if

6. Check bearing


if contaminated or


blackened due to

overheating.


leakage. Normal


minute is

recommended

8. Check pump

alignment.


securing nuts and

bolts.


instruments i.e.

pressure gauges and

flow indicators.


I Mixers for dosing

tanks

1 Lubrication of


2. Check coupling

alignment.


box

4. Check bearings.




parts.

7. Tightness of all

hardware

8. All electrical

connections.



moving parts.

2. Clean the rubber



of the spindle.




ANNX F

STAFFING



INTRODUCTION




Figure below:

Management Level

Operational Level

Labour Level


Management level

Operation level








Chemist

Assistant Chemist


Watchman

Gardener















Time to be

spent

6/7 days / week.

Number 1+4

Detailed

Tasks














piping.

Time to be

spent

6 days / week.

Number 1

Detailed

Tasks







Function Chemist



analysis of STP.

Time to be

spent

6/7 days / week.

Number 4

Detailed

Tasks








Level BSc. Medical


Time to be

spent

6 /7days / week.

Number 4

Detailed

Tasks






Time to be

spent


Number 24

Detailed

Tasks




ANNX G

STAFFING

(QUANTITATIVELY)


Annexure.”G”





Junior Engineer 0.25 Diploma in Civil





Electrician 0.33 ITI qualified in relevant trade


Sewer man/Sweeper 3

Casual Labour 1


Watchman 1

Gardener 1


Personnel




1

Plumber 1 Nos for every 5 Km length of sewer network 3.59 Km

1

Beldar

1 Nos for every 5 Km length of sewer network 3.59 Km

1

Supervisor


1


Item




ANNX H

WORKING SCHEDULE


WORKING SCHEDULE:

ANNX . H





S.

No.

















ANNX I


ACCOUNT










S.NO.

Parameters

Units

Design requirement


Maximum limit

Actual Deviation



A)



SS mg/l 30 60


MLSS mg/l 3000-5000

Within range




F/M ratio d-1



pH 6.8-7.2

2 Manpower

Process Engineer

Nos





failure

Chemist Nos





Operators Nos





Sewer man Nos






failure


Chowkidar Nos





failure

Casual Labour

Nos.





Junior Engineer

Nos





failure

3 Energy






Recycle pumps

kWh


side



kWh


side



4 Consumables

Alum Kg


side


Lime Kg


side


Polyelectrolyte

Kg


side


Bleaching Powder

Kg


side


































ANNX J


Centrifugal Pumps


Annexure”J”


Sr.

No

Name of

section or

part to be

attended


out

Frequent/time

interval at which

inspection and

maintenance to

be done

Remarks

1. Bearings


with thermometer







and driver.


packing

Two months



kerosene.


vacuum gauges

Three months

5. Valves





Six months

6. Exhaust

pump

and its

auxiliaries



Six months




impeller nut etc.

Year


Annexure”K”


Electrical Motors


Annexure”K”


Electrical Motors


or part to be

attended

Maintenance to be

carried out



maintenance to be

done

Remarks

1. Induction Motor

stator and Rotor

Opening of end

covers dust blowing

and checking of air

gap


the working

conditions &

maintenance

staff available.


and adjustment of



of cluth etc.

One month




Rotor, dust blowing

checking of end

connections of

stator. Rotor and


No load test before


load

Two years


Annexure”L”




Annexure”L”


Sl.No Name of

section or part

to be attended

Maintenance to be

carried out

Frequent/time

interval at which

inspection and

maintenance to be

done

Remarks


(greasing)

One month

2. Reduction Gear

Box


of oil level


applicable for both

aeration tank and

secondary settling

tank

3. Turn Table

mechanism


the oil level

Three months

4. Vertical slip

Ring Motor

Dust blowing.

Checking of carbon

brushes, bearings

etc.

Four months

5. Rail/Track

Adjustment of gap

between two rails &

its alignment etc.

Four months



Six months

7. Rubber type

wheels iron

wheels.

Checking of wear &


positioning



8. M S Scrapers



broken parts

Year


9. Turn table

mechanism

Checking of its

sprockets chains,

steel balls, gear

boxes etc.


ANNX---- M


Annexure ”M”



Alum 20

Polyelectrolyte 10

Lime 40

Bleaching Powder 10















































Safety Policy:






























Uses:










below 1000 ppm)







blood tinged sputum











10 ppm or

more


























the worker will already be wearing a respirator): m) Immediately close the main cylinder valve.


n) As long as the monitor reads less than 10 ppm, he cylinder hook-up procedure may be repeated.

o) Open (and close) the main cylinder valve and repeat the ammonia test. p) If a leak is still indicated, make a third and final attempt to get a good seal using a new lead

washer. q) If the leak cannot be corrected after three attempts, remove the cylinder from service and


r) Leave the chlorine room and remain nearby to restrict access to the room or provide other assistance, as directed, until the chlorine alarm has automatically shut off.


people must respond. Follow these steps: k) Approach the location cautiously. l) If chlorine gas can be smelled in the open, immediately leave the area and activate full

emergency procedures. Do not attempt to turn on the exhaust ventilation.* m) If there is no smell of chlorine gas outside the room, put on respiratory protection and check

the monitor readout. n) If the chlorine concentration is less than 10 ppm: ix) Put on the appropriate personal protective equipment. x) Enter the room and close the main cylinder valve. xi) Turn on the ventilation system and leave the area until the alarm stops. xii) While still wearing the respirator, enter the room after the alarm has stopped, isolate


o) If the continuous monitor indicates a chlorine concentration greaten than 10 ppm, immediately leave the area and activate full emergency procedures. Do not turn on the ventilation system* and do not wait downwind of the building for help to arrive.






























Inhalation


pulmonary edema




Skin

contact



Eye

Contact









First Aid:





Skin

contact






Eye

contact




Eye

contact















Bhuntar

Documents

Name of work:- A/R & M/O of Sewerage system to Bhunter ...hpiph.org/Tender/January 2018/Kullu... · Cont. Executive Engineer TERMS AND CONDITIONS Name of work:- A/R & M/O of Sewerage