MAHARASHTRA FISHRIES DEVELOPMENT CORPORATION …adf.maharashtra.etenders.in/tnduploads/adf/press... · Please refer proposed SLD as in ANNEXURE-III”. 32 - Point no.2.6, 2.7& 2.8

MAHARASHTRA FISHRIES DEVELOPMENT CORPORATION Modernization of Sassoon Dock

TENDER CORRIGENDUM NO. 001 DATE : 27-11-2017

Providing 500 TPD Tube ICE and 50 TPD Flake ICE Plant on EPC Basis. Unison Project Management Pvt. Ltd Page 1/7 Volume-IITechnical Specification

TENDER CORRIGENDUM NO. 001

Date : Monday, November 27, 2017

Further to Request to Tender Number MFDC-I.F.-02/433/2017, DTD. 20/11/2017, Tenderers are

advised of the following change(s) or clarification(s) to the Tender Documents.

IMPORTANT : Tenderers are required to acknowledge this tender CORRIGENDUM prior to the

TenderClosing Date - failure to acknowledge may constitute grounds for

rejection of Tender.

Acknowledgment may be made if your Tender has been submitted prior to receipt of this

Corrigendum. Theacknowledgment must state whether the price contained in your sealed

Tender is to remain unchanged or by howmuch it is to be increased or decreased in value.

List of Amendments:

Page no. Clause no. Revision in clause

27 PART C Sr.no. 1.3-e

Original clause : “Transfer Screw Conveyors” Revised clause : “Transfer Screw Conveyors & diverter valve”.

27 PART C Sr.no. 1.3-e

Original clause : “Qty : 5 sets” Revised clause : “Qty : 5 sets i.e. 1 set at each discharge point to Trawler”

27 PART C Sr.no. 1.3-g

Original clause : “Qty. – 5 nos.” Revised clause : “Qty. – 5 sets”





27 PART C After Sr.no.1.3-g following is added : h. 20Ton/hr Tube Ice Crusher – 5 sets i. Hopper/buffer below Transfer Screw Conveyor – 5 sets

27 PART C Sr.no. 2.1

Original clause : “Flake ice maker : 10 TPD x 5 nos.” Revised clause : “Flake ice maker : 10 TPD” Qty. : 5 nos.


Original clause : “Qty. – 1 no.” Revised clause : “Qty. – 1 no. each”

28 PART C

Point no.2.3 is added after point no. 2.2 as follows : “MCC required for Flake Ice Plant shall be located inside the Auction Hall as shown in the attached Tentative layout in Annexure-IV. All the required power, control cables along with accessories from the MCC to individual loads shall be provided by the contractor. However cable routes & the required cable trays inside the Auction Hall for laying of these cables will be provided by others.”


Original clause : “All civil works required for erection of Ice Plant such as CC.” Revised clause : “All civil works required for Ice Plant such as CC.”


Original clause : “Erection and commissioning of the Entire Ice Factory.” Revised clause : “Erection and commissioning of all Ice plant buildings including foundations, superstructure, floor slabs, roof slabs, cladding, finishing, etc.”





29 Notes point no.2 added as follows : “The locations & dimensions of the Ice plant & discharge points shown in thedrawings as per ANNEXURE-IV are preliminary.It is subject to revision to accommodate actual layout & berthing positions of trawlers & any such revisions should be included as part of this tender without any commercial implications.”

- -

Commissioning spares shall be provided by the bidder during commissioning. For list of mandatory spares refer ANNEXURE- Iwhich shall be included as a part of the bid by the bidder. Recommended 2 years operational and maintenance spares list shall be furnished by the bidder during submission of bid.

30 - Refer BATTERY LIMITS : Original clause : “Electrical supply (415V) upto a single point in the Ice plant area. Further distribution of this single point supply to respective MCCs shall be done by vendor”. Revised clause : “Electrical supply (415V) upto a single location in the Ice plant area. Further distribution from this location supply to respective MCCs shall be done by vendor. Please refer proposed SLD as in ANNEXURE-III”.

32 - Point no.2.6, 2.7& 2.8 is added after point no. 2.5 as follows : 2.6Hopper :

A hopper shall be provided below the Transfer Screw conveyors which shall take care of the surge from the screw conveyors. The hopper shall have two outlets – one directed towards the Tube Ice Crusher & the other towards the trawlers.

2.7Diverter Valve :

Diverter valve is located below the Hopper and is used for directing the flow direction of ice from one source to multiple destinations. The diverter valve mainly consists of main body and diverter arrangement. The diverter arrangement may be operated with motor, pneumatically or manually depending upon client’s requirements and resources available at site.





When the trawlers require Tube Ice, the diverter valve is opened towards the trawlers. Whereas when crushed ice is required for the trawler, the diverter valve is opened towards the Tube Ice crusher.

2.8Tube Ice Crusher(11) :

Tube ice crusher is used to crush the tube ice in smaller fragments, in this case crushed ice. Crusher mainly consists of Main body, Frame, and teethed shaft driven by motor pulley or direct arrangement. The tube ice generated from the maker is dropped either directly or through a screw conveyor in to the crusher. The tube ice when enters the crusher, the high speed rotating teethed shaft smashes the ice, resulting in small fragments of ice which from outlet are then stored in room or delivered to the trawlers.

33 Cl.no.3 Original clause : “A water circulation pump (by client), pumps this precooledCCC.” Revised clause : “A water circulation pump, pumps this precooled CCC”.

35 - Tentative layout is replaced with Drg.no.-MFDC/GAD/01 as per ANNEXURE-IV

36 - Typical Scheme is revised for Tube Ice Plant-1 (80TPD) – Rev.01 as shown in attached page no.36 of Tender document rev.01



43 - Point no.14 & 15 is added after point no.13 as follows : 14. Tube Ice Crusher :

Type:

Voltage:

Mounting :

Protection Class :

Make:

Frequency:

Duty :





No of pole :

RPM :

15. Diverter Valve :

Model:

Body MOC:

Operating drive :

Weight (kgs.) :

16. Hopper :

Body MOC: GI

Storage Volume :

Weight (kgs.):

Outlet sizes :

43 & 50 12 Original clause : MOC for Pipe : GI/PVC Revised clause : MOC for Pipe : GI

58 PART-D Cl.no.4

Original clause : “The illumination level at various places shall be as follows: - Ice Plant internal area / electric room etc : 250 Lux - General area lighting (including platforms if any) : 50 Lux” Revised clause : “The illumination level at various places shall be as follows: - Ice Plant internal area / electric room etc : 150 Lux - General area lighting (including platforms if any) : 50 Lux”

58 PART-D Cl.no.6

Original clause : GI tape Revised clause : GI Strip





58 PART-D Cl.no.6

Original clause : Earthing strip shall be clamped not welded. Revised clause : Earthing strip shall be welded.

60 PART-D Cl.no.8

Sl.no.16 under ELECTRICAL Original clause : Cables Revised clause : Power, Control & Instrumentation Cables

- - Following annexure is added : ANNEXURE-II : Performance Guarantee And Procedures

- - Following clauses are added : 1. Quality Plan

After awarding the contract the vendor will submit the manufacturing & inspection quality assurance plan (QAP) to the client for approval. Based on this,clients engineer/consultants can inspect the manufactured goods or the bought out equipment’s at the vendor’s factory. The QAP to be submitted for the following equipments

• Evaporator

• Compressor

• Motor

• Condenser

• Chiller

• Screw conveyor

• Ice maker

• Cooling tower

• All electrical panels

• Instrumentation The vendor will also submit the field quality plan for erection & commissioning of the plant at site with installation drawings for approval. 2. Operation & Maintenance Training (Mechanical & Electrical)

After award of the contract the vendor & the customer will mutually discuss the no. of people/manpower required for operation & maintenance of the plant.

a. Classroom Training- Before commissioning, contractor will provide class





room training to operation & maintenance staff for at least 3 working days at site or nearby place. All expenses for training to be borne by contractor.

b. On-site Training

During commissioning & acceptance test contractor shall depute his personnel at site to provide on job training to the operation & maintenance staff of the owner on each equipment for at least 15 days. In addition to this they will also be trained to handle practical issues related to operations, preventive & breakdown maintenance.

3. Operation & Maintenance Manuals

Vendor will submit one soft copy & four hard copies of the operation & maintenance manual along with the last supply of the equipment's.




ANNEXURE–I

LIST OF MANDATORY SPARES

Sr.

No. Part Description UM

Qty. for

each

type

I FLAKE ICE PLANT

A For Flake Ice Maker

1 ABS Water Trough with Spray Nozzle NO 3

2 Ice Removing Tool 8 Teeth Set 1

3 Top bearing NO 1

4 Gear Box No 1

B For Flake Ice Plant

Instruments & Valves - Ammonia Service

1 NH3 Liquid level Indicator NO 1

2 NH3 Liquid line float switch with Solenoid valve with

in built strainer - Weldable

NO 1

3 Single Safety Relief Valve - Screwed NO 2

4 Hand Exp Valve - Weldable NO 1

5 Pressure Gauge NO 3

Instruments & Valves - Water Service

1 Non Return Valve Swing Type NO 1

C For Compressor

1 Bearing Bush ( STD) Drive End NO 1

2 Bearing Bush ( STD) Pump End NO 1

3 Piston NO 4

4 Set of Piston Ring NO 9

5 Big End Bearing NO 9

6 Needle Roller Bearing NO 6

7 Intermediate Bearing NO 2

8 Kit Delivery Valve Ring/Spring NO 5

9 Shaft Seal Complete NO 1

10 Oil Pump Gear Kit NO 1

11 Oil Pump Service Kit NO 1

12 Gasket Set for Compressor NO 1

13 O'Ring Set for Compressor NO 1

14 Filter Paper NO 4

15 Filter Wire Gauge NO 2




Sr.


Qty. for

each

type

II TUBE ICE PLANT

A For Tube Ice Maker

1 Gear Box with Motor NO 1

B For Tube Ice Plant

Instruments & Valves - Ammonia Service

1 NH3 Liquid level Indicator NO 1

2 NH3 Liquid line float switch with Solenoid valve with

in built strainer - Weldable

NO 1

3 Single Safety Relief Valve - Screwed NO 2

4 Hand Exp Valve - Weldable NO 1

5 Pressure Gauge NO 3

6 Thermostat Expansion valve NO 1

Instruments & Valves - Water Service

1 Non Return Valve Swing Type NO 1

C For Compressor

1 Bearing Bush ( STD) Drive End NO 1

2 Bearing Bush ( STD) Pump End NO 1

3 Piston NO 4

4 Set of Piston Ring NO 9

5 Big End Bearing NO 9

6 Neddle Roller Bearing NO 6

7 Intermediate Bearing NO 2

8 Kit Delivery Valve Ring/Spring NO 5

9 Shaft Seal Complete NO 1

10 Oil Pump Gear Kit NO 1

11 Oil Pump Service Kit NO 1

12 Gasket Set for Compressor NO 1

13 O'Ring Set for Compressor NO 1

14 Filter Paper NO 4

15 Filter Wire Gauge NO 2

III

ICE HANDLING

PLANT

FLAKE ICE PLANT

A For Craddle

1 Drive End Shaft NO 1




Sr.


Qty. for

each

type

2 Free End Shaft NO 1

3 Nylon Wear Pad Set 1

4 DE Flange Bearing NO 2

5 NDE Bearing NO 4

6 DE Sprocket NO 2

7 Free End Sprocket NO 2

8 Chain for RLC Craddle Set 1

9 Gear Box NO 1

10 Electronic speed switch NO 1

11 Drive Motor S4 duty NO 1

12 Roller Chain Offset Link - Simplex NO 8

13 Roller Chain Offset Link - Duplex NO 1

14 Countersunk Bolt for Nylon wear pad NO 50

B For Lift & Ice Gate

1 Lift Rope - Steel Core GI Set 1

2 Lift Rope 'U' Clamps NO 10

3 Limit Switch for lift NO 6

4 Ice Gate Gear Box NO 1

C For Discharge Screw Conveyor

1 Drive Gear Box NO 2

2 Drive Motor NO 1

III TUBE ICE CRUSHER

1 Motor with Gearbox NO 1

2 Pulleys NO 2

3 Oil Seals NO 2




ANNEXURE–II

PERFORMANCE GUARANTEE & PROCEDURES

1. Performance guarantee

Performance guarantee is for the period of 18 months from the date of commissioning or

24 months from the date of supply of the equipment’s, whichever is earlier. During this

period the individual Tube ice maker, Flake Ice plants & ice handling equipment should

perform with the rated capacities as ordered. Normal wear & tear of the parts will be

taken care by the owner.

2. Testing parameter

Each Tube Ice, Flake Ice plant & ice handling equipment should give the rated capacity

as ordered. Detailed QAP & testing procedures at manufacturer’s works to be provided

for approval, for individual equipment.

3. Acceptance criteria- a. Flake Ice Plant

A water meter calibrated & certified by recognized government agency not more

than one month before the performance trial date, to be installed on the individual

water line. These water meter readings will be taken for duration of the

performance trial, after stabilization of the plant for the initial period. During the

acceptance trial period client will give uninterrupted water & power supply required

for each plant. The contractor to demonstrate performance individually &

collectively of 5 nos. Flake ice plant each/ Ice makers having capacity of 10 TPD

for a period of 7 consecutive days.

b. Tube Ice Plant

A water meter calibrated & certified by recognized government agency not more

than one month before the performance trial date, to be installed in the individual

water line connected to individual icemaker. These water meter readings will be

taken for duration of the performance trial, after stabilization of the plant for the

initial period. The Ice makers will be tested individually & together during the

performance trial over a period of 7 consecutive days. The Tube Ice quality can be

measured during each harvesting cycle with uninterrupted power & water supply.

The contractor to demonstrate performance of tube ice plant individually




&collectively having capacity of 500 TPD for a period of 7 consecutive days.

Delivery from storage room to screw conveyor will also be demonstrated as per

required capacity.

4. Demonstration of conveyor capacity of each outlet

Each screw conveyor system will have discharge capacity of 20 ton per hour. This

discharge capacity will be demonstrated for a period of 7 consecutive days by measuring

each discharge on an hourly basis using automatic weighing balance/scale provided in

the system or calculated every hour using volume /speed etc. as per design calculations.

Screw conveyor discharge will be tested individually & collectively during the

performance trial. Contractor to demonstrate performance of Ice handling plant of 20 ton

per hour capacity (TPH) at 5 discharge points.

5. If due to consumption restriction capacity demonstration for each plant or equipment

mentioned above is not completed during the performance trial period , the owner can

demand a repeat of the performance trial to check overall capacity, within a 6 months

period.

6. In the event of failure of the Tube Ice plant, Flake Ice plant & ice handling equipment to

demonstrate the required performance, entire trial will be repeated as per procedure

mentioned above. The contractor will be given 15 days to rectify the situation before a

new trial is conducted. The owner will reserve the right to ask for replacement of

equipment/plant in the event of 2 successive failures during performance trials.

7. Overall requirement specified as follows

• Total 500 TPD Tube ice plant with total 200 ton storage capacity

• 5 nos. – 10 TPD Flake ice plant

• Tube ice handling plant of 20 ton per hour capacity each (TPH) at 5 discharge

points.

• 5 nos. 20 TPH tube ice crushers at ice discharge points

The locations & dimensions of the Ice plant & discharge points shown in the drawing are

preliminary .It is subject to revision to accommodate actual layout & berthing positions of

trawlers & any such revisions should be included as part of this tender without any

commercial implications.

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Providing 500 TPD Tube ICE and 50 TPD Flake ICE Plant on EPC Basis. Unison Project Management Pvt. Ltd Page 36/60 Volume-IITechnical Specification Rev:R1

Note:Please refer the System Description for the above indicated equipment numbers. The equipment nos. are suffixed with the respective equipment names in the system description.

e.g. Tube Ice Maker (1)











A pre bid meeting was held at MFDC office Mumbai on 24-11-2017 and point wise reply is as under.

The below clarifications shall be read in conjunction with the attached CORRIGENDUM No.001 which now forms a part of the tender document.

Sr. No. Name of Company Query's from bidder Clarifications / Reply

Chirag ice factory pvt

Ltd(Icelings)

1 LOCATION / PLANT LAYOUT:

Three different layouts are given – Kindly

confirm if the location is in one singular

location of 25meter x 25 meter. Kindly specify

if there are any specific height restrictions.

Yes it is one singular location of 25 X 25 mtrs . Pl see the

representative drawing attached and specifications in which

it is mentioned that these are limiting dimentions. (Refer

Annexure IV of CORRIGENDUM No.001)

1.1Kindly confirm whos responsibility to procure

building plan approvalsEPC Contractor’s responsibility

1.2

Is there any specification or restriction

between use of pre-engineered building (PEB)

versus civil RCC construction

NO

1.3

From operating safety point of view it is

recommended that the cooling towers and

condensor/revcivers be placed at height and

not at ground level due to the heavy human

traffic in the dock area.

These equipment’s are placed in the enclosed room with

proper ventilation, the general human traffic is not supposed

to pass through the plant room. If technical justification is

satisfactory & required performance is acheived , contractor

has flexibility to modify the arrangement after taking into

consideration the limiting dimensions & height .

1.4

Ice rake system should be on ground floor

due to heavy loading of ice and future

operational maintainence issues

We have space restriction, in case the ice rake system

installed on ground floor, screw conveyor laying will be a

challenge and another space will be required to install the

compressors . If technical justification is satisfactory &

required performance is acheived , contractor has flexibility

to modify the arrangement after taking into consideration

the limiting dimensions & height .

1/6




1.5

Water storage – Kindly specify the actual

water tank capacity required and whether

they should be overhead or underground or

on ground and the capacities of each.

Owner will maintain the sufficient quantity of water in

storage tank. Owner will provide the water points/piping in

the ice plant with the head of about 15 meters. Contractor

has to specify the quantity of water required in ice plant.

Contractor to maintain buffer tank & include in his

scope(However this is not mandatory).

1.6

As discussed in the meeting please confrim

that ammonia is the recommended

refrigerant. If not, please specify which other

refrigerant.

Ammonia refrigerant is OK.

1.2CAPACITIES & SUGGESTED PLANT

CONFIGURATION

1.2.1

The exisiting plant configuration of 60 TPD x7

nos and 40 TPDx2 nos is not the most cost

effective on capex or opex basis. Better

option either 80 x 6 or 125 x 4 with multiple

compressors configuration which will provide

the operating efficiency as well as lower

power consumption – better for power

efficiency and operational efficeincy – in

addition the complete spares will be

interchangable and the operations team will

not have to maintain two differnet sets of

spares – for 60 TPD and 40 TPD.

Power consumption of ice maker depends on the tons of

production and hence the change of model / size of the Tube

Ice Maker should not make any major difference in power

requirement since overall requirement is 500 TPD

Considering 5 nos of total discharge in trawlers , location,

length & restriction of screw conveyors (Pl see drawing) 3

sets of ice makers with storage rooms are envisaged.

Flexibility is also required to operate individual or more

than one ice makers in each set .It is recommended to run

plant at partial load if requirement is reduced or in the event

of breakdown of one ice maker , total set is not shut down.

With this philosophy , size & location of ice makers for each

set can be decided by contractor to meet total requirement

of 500 TPD. A maximum of 2 sizes of ice maker are

recommended keeping in mind spares requirement &

interchangeability.

2/6




1.2.2

Since the tube ice plant operate using hot has

defrosting the plant operating efficieny

increases if the receivers and

condensors/cooling towers are combined.

Query is not clear. Separate receiver is preferable to

accommodate the refrigerant liquid in case of system pump

down.

1.3 MOC SPECIFICS –

1.3.1

Tube ice plant - should be Seamless tubes 304

@ 16 guage and SS304 shell due to the

promity of plant to the sea and the resultant

corrosive environment.

SS 304 x 16 G seamless tubes & SS 304 shell is OK

1.3.2

Please specify the screw conveyor MOCS (SS

304 or hot dip galvinized)– it is highly

recommended that the total length of the

screw conveyor will be divided in sections

with any one individual section not more than

20 meters. This will ensure power and

oeprating efficieny. Further, the conveyors of

20 mt should be divided into 2 x 10 mt in

order to accord for future operational

maintainence and downtime issues.

SS 304 MOC of the `U’ trough type Screw Conveyors is

OK. Contractors can break the screw conveyor lengths

suitably, preferably +/- 20 m length is OK

Please confirm conveyor insulation? Conveyor insulation is reputed make foam rubber of suitable

thickness to withstand the ice temperature

1.3.3

1.3.4Please confirm conveyor supports – heights?

MOC of supports?

MOC of the supports will be galvanized steel.Conveyor

support design will vary as per design of vendor

3/6




1.3.5

Please confirm the # of openings and types of

openings and whether automated acutators

to be provided or manual openings

From 5 sets of discharge conveyors, Ice is discharged at 5

points to the trawlers . Openings will have diverter gates Pl

see schematic on pages 36 to 38.

1.4 ELECTRICAL:

1.4.1Please specify whos scope is the ht

tranformer and power supply?

Pl see tender specifications. LT power supply will be provided

at one location within the ice plant boundary to EPC

contractor Further distribution by contractor.Please see

representative SLD. (Refer Annexure III of CORRIGENDUM

No.001)

1.4.2Which specify the location of electricity point

of supplyPl see above reply

1.4.3Common incommer MCB or individual per

plant or per grouping

Pl see representative SLD. (Refer Annexure III of

CORRIGENDUM No.001)

1.5 COLD STORAGE ROOMS

1.5.1 Insulation thickness

Ice room insulation should be, Hot dip galvanized, pre coated

sandwich, rigid polyurethane foam (PUF) 80 mm thk, panels

having about 38 to 40 kg /m3 density.

1.5.2 Temperature 10 - 12 degree C

1.5.3 Height of room

Height of the room as per the design of the contractor suitable to

feed the screw conveyors, within limiting dimentions. (Refer

Annexure IV of CORRIGENDUM No.001)

1.6 FLAKE ICE PLANTS

1.6.1Please specify the no. of flake ice storage

rooms and their dimensions

5 nos. Pl see drawing provided with tender for limiting

dimensions. (Refer Annexure IV of CORRIGENDUM No.001)

1.6.2

Please specify is the flake ice storage rooms

have to be refrigerated and what

temperature

Flake ice storage room need not be refrigerated.

4/6




1.6.3Please specify the exact location of the 5 nos

flake ice plants

as shown in the layout drawing. (Refer Annexure IV of

CORRIGENDUM No.001)

2Prathmesh

Construction

Vol. 1 para 13.3

2.1

The Price escalation clause shall be amended

when extension is given for no fault of

contractor and price escalation may be

allowed. Under such event formula for price

escalation may be issued by inviter.

Tender conditions prevail

3 Push Engineering

3.1

The unit measure of Ice production capacity

required is not mentioned. Metric Tons (1

MTPD = 2200 pounds ) or US Tons (1 US TPD =

2000Pounds), i.e. 10 % difference in the

capacity.

Metric Tons

3.2

Do you need storage room for all 5 sets of

Flake Ice Plant ? If yes, of what capacity each

or the size of the room? What will be the

height of the Ice storage room i.e. bottom

from the ground level for the convenience of

the manual handling of the Flake Ice?

Yes we need storage room for all 5 sets of Flake Ice Plant, of

capacity 10 ton with insulated door each and height of the

Ice storage room i.e. bottom from the ground level for the

convenience of the manual handling of the Flake Ice

Pl see drawing for limiting dimentions. (Refer Annexure IV of

CORRIGENDUM No.001)

3.3

Is it possible to dispatch the plants on prorata

(partial deliveries acceptable ) basis & get the

supply payments accordingly or partial

deliveries are not acceptable at all?

Please notePartial deliveries acceptable.

5/6




3.4

Will MFDC make available a lockable room for

the storage of the goods dispatched, before

start of erection activities and the Erection &

commissioning material during the Erection

work?

Contractor to build own store within premises .Security &

safety will be responsibility of contractor

3.5

The exact locations of all Ice loading points in

the trawlers are not given, with reference to

the Tube Ice storage room.

Please note that locations & dimensions of the Ice plant &

discharge points shown in the drawing are tentative .It is

subject to revision to accommodate actual layout required

for proper functioning of ice plant , handling system &

berthing positions of trawlers .Any such alterations have to

be accomodated by the contractor as part of tender

condition without any commercial implications.Pl see layout

drawing attached. (Refer Annexure IV of CORRIGENDUM

No.001)

3.6

Liquidated damages/ delays- will be

attributed towards the contractor if there is

no delay from the contractor.

Tender conditions prevail

3.7

How much is the minimum clear height

required between the lowest point (bottom

most part) of the screw conveyor and the

ground floor. Please confirm that all supports

below each conveyor are taken from the

ground floor.

2.5 metres ,

Yes all supports below each conveyor are taken from the

ground floor.

6/6