OSU System Description.pdf

PHYSICS RESEARCH BUILDING

SYSTEM DESCRIPTION

VOLUME 1

FIRE PROTECTION, PLUMBING, HVAC, ELECTRICAL, AND ELEVATOR SYSTEMS

THE OHIO STATE UNIVERSITY

PROJECT: OSU-080142

December, 2008

Provided by:

Heapy Engineering LLC 1400 West Dorothy Lane Dayton, Ohio 45409-1310

Project No. 2007-81021 Your partner for engineering solutions

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TABLE OF CONTENTS

PURPOSE AND SCOPE .............................................................................................................................. 3 FIRE PROTECTION

SECTION 1. FIRE PROTECTION.......................................................................................................... 5 PLUMBING

SECTION 2. PLUMBING: Sanitary Waste and Vent System................................................................ 7 SECTION 3. PLUMBING: Domestic Cold Water System.................................................................... 11 SECTION 4. PLUMBING: Domestic Hot Water System ..................................................................... 15 SECTION 5. PLUMBING: Natural Gas System ................................................................................... 19 SECTION 6. PLUMBING: Laboratory Air System............................................................................... 23 SECTION 7. PLUMBING: Shop Air System........................................................................................ 27 SECTION 8. PLUMBING: Acid Waste System ................................................................................... 31 SECTION 9. PLUMBING: CAP I and CAP II Pure Water Systems..................................................... 35

A. CAP I Ultra-Pure Water System .............................................................................. 35 B. CAP II Pure Water ................................................................................................... 38

SECTION 10. PLUMBING: Nitrogen System ...................................................................................... 43 SECTION 11. PLUMBING: Helium Recovery System ........................................................................ 45 SECTION 12. PLUMBING: Interior Storm Drain System .................................................................... 47

HVAC: HEATING, VENTILATING AND AIR CONDITIONING SYSTEMS SECTION 13. HVAC: Heating, Ventilating and Air Conditioning Systems Overview.......................... 51 SECTION 14. HVAC: Steam to Heating-Hot Water System and Hot Water Distribution System....... 55 SECTION 15. HVAC: Chilled Water System and Chilled Water Distribution System......................... 63 SECTION 16. HVAC: Steam-to-Steam Re-Boiler ............................................................................... 71 SECTION 17. HVAC: Steam Condensate Return System CRU-1...................................................... 79 SECTION 18. HVAC: Steam Condensate Return System CRU-2...................................................... 83 SECTION 19. HVAC: Steam Condensate Return Pumps PP-1 ......................................................... 87 SECTION 20. HVAC: Process Cooling System .................................................................................. 91 SECTION 21. HVAC: Air Handling Unit AHU-1................................................................................... 99 SECTION 22. HVAC: Air Handling Unit AHU-2................................................................................. 115 SECTION 23. HVAC: Air Handling Unit AHU-3 and Lithography/Etching Class 1000 Clean Room 131 SECTION 24. HVAC: Air Handling Unit AHU-4................................................................................. 143 SECTION 25. HVAC: Fiberglass Reinforced Plastic Duct for Magnet-Room Rooms....................... 155 SECTION 26. HVAC: Mechanical Equipment Room Ventilation Unit V-1 ........................................ 157 SECTION 27. HVAC: Miscellaneous Ventilation and Exhaust.......................................................... 165 SECTION 28. HVAC: Smoke Exhaust System ................................................................................. 171 SECTION 29. HVAC: Heat Recovery System................................................................................... 177 SECTION 30. HVAC: Laboratory Exhaust ........................................................................................ 185 SECTION 31. HVAC: Computer Server Room HVAC Unit AC-1...................................................... 195 SECTION 32. HVAC: Class 100 Clean Room 0153B....................................................................... 201

ELECTRIC SECTION 33. ELECTRICAL: Medium Voltage Service And Distribution System ............................ 211 SECTION 34. ELECTRICAL: Low Voltage Service and Distribution System ................................... 217 SECTION 35. ELECTRICAL: Emergency Generator Service and Distribution System ................... 227

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SECTION 36. ELECTRICAL: Uninterruptible Power Supply System ............................................... 239 SECTION 37. ELECTRICAL: Fire Detection System........................................................................ 245 SECTION 38. ELECTRICAL: Grounding System ............................................................................. 251 SECTION 39. ELECTRICAL: Lightning Protection System .............................................................. 255 SECTION 40. ELECTRICAL: Surge Protective Device System ....................................................... 261 SECTION 41. ELECTRICAL: Lighting Control Systems ................................................................... 265

A. Synergy Lighting Control System .......................................................................... 265 B. Leviton Lighting Control System............................................................................ 268

SECTION 42. ELECTRICAL: Motor Starting and Control ................................................................. 273 ELEVATOR

SECTION 43. ELEVATOR - Elevators ............................................................................................... 283

The Ohio State University Page ii Copyright Heapy Engineering LLC Physics Research Building System Description Heapy Project No. 2007-81021 OSU System Description

PURPOSE AND SCOPE

This report consists of systems descriptions which will provide facility users and Operating and Maintenance staff consolidated and clear information relating to proper operation, maintenance and troubleshooting of various building systems.

Scope The following items shall be included in the Systems Descriptions:

1. Systems overview 2. Major systems components 3. Design conditions and operating conditions 4. Detailed system description 5. Interface with other systems including impact of system malfunction on other systems 6. Sequence of operation (if applicable) and system operating procedures

6.1. Start-up procedures: Local and Remote 6.2. Shut-down Procedures: Local and Remote 6.3. Emergency shut-down procedures 6.4. Routine operator procedures

6.4.1. Regular checks 6.4.2. Hourly checks 6.4.3. Shift checks 6.4.4. Reports and Logs 6.4.5. Daily Data Sheets

7. Safety considerations 8. Operation and maintenance considerations 9. Troubleshooting

9.1. Alarm Responses 9.2. Process Troubleshooting 9.3. Equipment Troubleshooting

10. Other considerations specific to the system 11. System analysis and recommendations for system adjustments and enhancements 12. Responsibility matrix for system operation and maintenance 13. An appendix/appendices reference will be provided for:

13.1. Applicable data, drawings, specifications and manuals (including screenshots) 13.2. Applicable system test procedures 13.3. Valve Numbering System 13.4. Equipment List 13.5. Valve List and Schedules 13.6. Additional Training Material Locations of available data will be noted. Copies of construction documents will not be included in the report.

Systems to be Reviewed

1. Fire Protection System 2. Heating Systems

a. Steam-to-Hot Water Heating System b. Steam-to-Steam Re-boiler for Humidification System c. Steam Condensate Return System

3. Cooling Systems a. HVAC Cooling System b. Process Cooling System c. CAPI* and CAPII* Water Cooling System (*College of American Pathologists,

National Committee for Clinical Laboratory Standards) 4. HVAC Systems

a. Laboratory Area System AHU-1 and AHU-2 and Exhausts 1,2,3,4,5, & 6 1) Individual laboratory Room Controls 2) Clean Room 0153B with Liebert AC-2 plus HEPA Recirculating Units for Gramila-2

Laboratory

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3) Non-Magnetic Construction and Fiberglass Reinforced Plastic Construction for Magnet Rooms

4) HEPA Filtration System for Individual Rooms 5) Associated Exhaust Fan Systems

b. Glycol Heat-Recovery System and Glycol Make-up System c. Lithography/Etching Class 10,000 and Class 1000 rooms 0115 and 0115A. System AHU-

3 1) Individual Laboratory Room Control 2) HEPA Filtration Systems for Individual Rooms

d. Non-laboratory System AHU-4 e. Smoke Exhaust System f. Mechanical Equipment Room Ventilation System g. Computer Server Room HVAC System AC-1 (Liebert) h. Miscellaneous Ventilation and Exhaust Systems

5. Building Automation System 6. Medium Voltage Electrical Service and Distribution 7. Low Voltage Electrical Service and Distribution 8. Emergency Generator Electrical Service and Distribution 9. Uninterruptible Power System (UPS) to Computer Server Room(s) 10. Fire Detection and Alarm System 11. Grounding System 12. Lightning Protection System 13. Transient Voltage Surge Suppression (TVSS) System 14. Lab Compressed Air; Shop Compressed Air and Dry Nitrogen Systems 15. Various Lighting Control Systems 16. Elevator and Lift Systems 17. Various Plumbing Systems 18. Special Systems

a. Water Leak Detection and Alarm System b. Alarm Monitoring System c. Sump Pump Systems d. High Intensity Laser


SECTION 1. FIRE PROTECTION

Evaluation of Fire Suppression Systems for the Ohio State University Physical Sciences Research Building, by Contech Design, Incorporated, was prepared as a separate document and is included as an addition to this report.

1.1 Responsibility for Operation and Maintenance (FOD)

Facilities Operations and Development (FOD) District 1 Zone 3 Maintenance Building 2000 Tuttle Park Place Telephone: 614-292-6158 For emergency service requests, call Service2Facilities at 614-292-HELP (4357).

1.2 Additional Information & Resources

Reference information for Fire Protection System can be located as indicated below:

Project plans and specifications:

1. Facilities Operations and Developments (FOD) archive website: http://fod.osu.edu/archives/

2. Facilities Operations and Developments (FOD) facility manager room - room 1105, first floor southeast side of the Physics Research Building (PRB).

Operation and maintenance manuals:


2. Facilities Operations and Developments (FOD) Programmed Maintenance (PM) Shop. Phone: 614-292-2094.

Building automation system sequence of operation:


2. Facilities Operations and Developments (FOD) Programmed Maintenance Shop (OPSPM). Phone: 614-292-2094.

3. Facilities Operations and Developments (FOD) Building Automation Shop (OPSBAS). Phone: 614-292-6104.

Valve numbering list:



Additional training material:




EVALUATION OF FIRE SUPPRESSION SYSTEMS

FOR

THE OHIO STATE UNIVERSITY

PHYSICAL SCIENCES RESEARCH BUILDING

July 11, 2008

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Table of Contents

I. Exterior Combination Water Service II. Interior Fire Service III. Fire Pump Assembly IV. Wetpipe Sprinkler System V. Drypipe Sprinkler System VI. Standpipe System VII. Clean Agent Sprinkler System VIII. Appendices

a. Field Photographs (included) b. Record Construction Documents (located in room ______/building_________) c. Operation and Maintenance Manuals (located in room ________/building

_______) d. Test Procedure/Approval Certificates (located in room _________/building

___________) e. Valve Tag Information (included) f. Operating, Maintenance and Training materials (located in room

___________/building _____________) g. Building Fire Zone Orientation (included)

Evaluation of Fire Suppression Systems for the Ohio State University Physical Sciences Research Building July 9, 2008

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Fire Suppression Systems

I. Exterior Combination Water Service Overview /Major System Components:

It was determined from the original (03-01-03) fire suppression installing contractors shop drawings that the 8 underground fire main and 4 domestic water main originate on the north side of this building, northwest of the paved entry and near Woodruff Avenue. There is an existing yard valve/box at this location.

This 8 ductile iron fire main is routed eastward, turns slightly southeastward and then enters the basement level, Mechanical Room No. 120M between columns no. 08 and 09 at column no. 28.

Also at this location is the 3-way fire pump test header TC1. Reference attached Site Utility Plan, FS1, and field photos No. 3 and 4.

Design and Operating Conditions:

A flow test was performed by the installing contractor on 03-20-03 at 12:00am and the recorded performance resulted in the following design criteria:

o Static pressure ______________ 108 PSI o Residual pressure ____________ 102 PSI o Flow ______________________ 1566 GPM o Pitot _______________________ 87 PSI

This test occurred at the two nearest (Woodruff Avenue) fire hydrants approximately 500 lineal feet west of the local 20 water main.

System Description and Interface to Other Systems:

The 8 fire service is sized to support all of the various fire sprinkler systems within this facility.

This single source supplies the buildings fire pump assembly, standpipes, fire department hose valves, fire hose stations, the wet pipe and the dry pipe systems throughout.

Sequence of Operation:

The 8 interior fire service and its dedicated individual sub-systems are all automatic in function. The jockey pump JP maintains system pressure while these systems are in a static/non-event mode as might occur during small leaks. The fire pump provides operating pressure during a fire event. The standpipes (2-1/2 Class I fire hose valves) are utilized by fire department personnel to combat fire with heavy hose streams. The wet pipe sprinkler system operates strictly on the fusing or burst of a typical sprinkler head. The dry pipe sprinkler also relies on the fusing or burst of a typical sprinkler head which relieves air from the piping network. An air-compressor is used to maintain air pressure in this piping under normal conditions.


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Upon evacuation of this pipe air, this triggers the system dry pipe valve to allow the introduction of water to the point of rupture/fire. Integrated supervisory attachments in each system trigger respective alarms.

Safety Considerations/Operation and Maintenance, Troubleshooting, System Analysis and Recommendations:

Verification of the functionality of the 8 fire service main isolation/yard valve nearest the takeoff from the local street main would be recommended. Replacement of the valve box access cover with a labeled Fire or a label familiar to the authority having jurisdiction (AHJ) would enhance identification of the correct shut-off valve. In addition, it would be highly recommended to have a current fire flow test performed and recorded with the university and the AHJ noting changes from the original design.


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II. Interior Fire Service Overview/Major System Components:

The 8 fire main runs approximately 10 lineal feet southwest and drops to an 8 horizontally mounted double check detector DCA assembly. The outlet rises and continues on to the fire pump suction inlet. Reference field photo Nos. 1 and 2 in appendix.

Design Operating Conditions and System Description:

The interior 8 schedule 40, black steel pipe is grooved end with cast style fittings and mechanical couplings. This is true from 8 size through 2-1/2 size pipe. From 2 size through 1 size, piping remains schedule 40, black steel, but with cast style fitting and threaded joints. This size line is capable of flowing a theoretical 2500 GPM with a 10.0 PSI pressure drop per 100 lineal feet at the specified 15 FPS maximum limitation. This is well beyond the system designed (750 GPM) requirement based on hydraulic calculations and NFPA code requirements. The 8 double check backflow device performance at 750 GPM flow is 5 PSI pressure drop.

System Interface with Other Systems:

The interior fire service beginning at the exterior fire service entry ends in the basement level, Mechanical Room No. 120M/Fire Pump Room.

Safety Considerations:

It may be advisable to contain or protect the 8 double check detector assembly from physical damage as this is the life line to the fire pump and also a very costly component of the system.

This backflow device (630 lbs) rests on the installed pipe elbows, which in turn rest on pipe stands. Service clearance for maintenance/testing should be maintained.

Operation and Maintenance, Troubleshooting, Analysis and Recommendations:

The backflow device requires minimal maintenance although a semi-annual overall check should be performed to ensure no internal debris or external leaks exist. Recertification of the device is required following service.


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III. Fire Pump Assembly Installation Overview and Major System Components:

The fire pump assembly consists of the following componentry: o Vertical, in-line centrifugal fire pump FP o Vertical, multi-stage centrifugal, close coupled jockey pump JP o Fire pump controller FPC o Jockey pump controller JPC o Inlet/outlet pressure gauges o Supervisory shut-off valves, check valves, relief valves and drain valves o Automatic (power) transfer switch ATS o Low suction cut-off panel LSCP. o Fire department connection FDC o Fire pump test header TC1

These pumps, FP and JP are both supported on threaded hanger rods which are imbedded in small, 4 high concrete housekeeping bases achieving approximately 9 A.F.F. mounting height. The discharge pipe is supported from the structure above on threaded rods with swivel ring hangers. The fire pump test header line is supported with hangers from the discharge piping.

Reference field photos Nos. 4, 6, 7, 8, 9, 10, 11, 12, and 13 in appendix and attached fire pump piping schematic FS1 and flow test data listed in Section I, Exterior Combination Water Service, Design and Operating Conditions.


This fire pump is an electric driven field fabricated assembly meeting the UL listing and NFPA 20 standards for centrifugal fire pump installation. The fire pump FP component is an ITT-AC company model, no. 1580 with a 40HP, vertical in-line pump and 3550 RPM motor powered by 480 volt, 3 phase, 60 HZ and 52 full load amps. The motor is a US Electric Company, open drip proof model no. AD27A/286 JPY frame with class F rating and 1.15 service factor. The pumps capacity is 750 GPM at 60 PSI (138.6 FT. HD).

The jockey pump JP is a Goulds Pumps Company, SSV series, model No. VM3545 with a 1HP, vertical multi-stage pump and 3500 RPM motor powered by 240 volt, 3 phase, 60 HZ and 3.6 full load Amps. The motor is a Baldor Company, totally enclosed fan cooled, model no. VM-3545/56C Frame with Class B rating and 1.25 service factor. The pumps capacity is 10GPM at 70 PSI (161.7 FT HD).

System Description, Interface with Other Systems and Sequence of Operation:

The existing fire pump assembly is a field fabricated system comprised of factory assembled, tested and approved components. The entire installation composes an interactive unit in which the fire pump FP is static until a catastrophic event occurs. The jockey pump JP maintains a constant water pressure in the pipe network during the static mode. Its function is to artificially pressurize to an elevated level such that if a sprinkler head releases the pressure differential would quickly be recognized by the


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fire pump and avoid false starts due to small leaks. The field installed pressure sensing lines communicate with the fire pump FP fire pump controller FPC, automatic transfer switch ATS, the jockey pump JP, jockey pump controller JPC and the low suction cutoff panel LSCP for overall operations. The fire pump controller monitors the assemblys multiple power sources and fire pump per NFPA 70 for:

o Visual Signals Power availability pilot light Phase reversal pilot light

o Alarm Signals Motor running Power failure Phase reversal

The automatic transfer switch is an integral part of the fire pump controller and in the event of loss of primary power it will switch to the secondary (emergency generator) power supply.

The jockey pump controller monitors the assemblys jockey pump per NFPA for: o Running period timer o Power availability pilot light o Motor running pilot light

The low suction cut-off panel monitors the fire service pressure availability and will shutdown the fire pump assembly if incoming pressure drops to 20PSI or less over a period of 30 seconds. This panel monitors per NFPA 70 for:

o Visual signals Power availability pilot light Secondary power energized pilot light Low suction pressure pilot light

o Alarm signals Power failure Secondary power failure Low suction pressure (following time delay)

Safety Considerations, Operations and Maintenance:

Pumps o The fire pump and jockey pump shall be observed for excessive vibration while

running following any routine maintenance and/or repair. o Follow the manufacturers instructions when dismantling, repairing and

reassembling. o Always use the complete model number and serial number when ordering parts. o Maintain clearance space around this equipment for service needs for the

manufacturers recommendations. o Controllers/panels/devices


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o All control components should be observed for tightness of electric connections, and the absence of any short circuits, ground faults or current leakage.

o In addition, be certain enclosures are properly closed and sealed prior to energizing breakers or switches.

o Follow the manufacturers instructions when dismantling, repairing and reassembling

o Always use the complete model number and serial number when ordering parts. o Maintain clearance space around this equipment for service needs per NFPA 70.

Valves/Fittings: o All such shall be observed for leakage and proper (open/closed) position. o Follow the manufacturers instructions when dismantling, repairing and

reassembling o Always use the complete model number and serial number when ordering parts. o Maintain clearance space around this equipment for service needs per NFPA 70. o Verify that the local 4 floor drain and sewer line in this space are clear, clean

and functional.

System Analysis and Recommendations:

The fire pump assembly was specified as a factory assembled skid package. The system as installed is a field assembled unit.

It should have been skid mounted and set on an overall concrete housekeeping pad. Currently, a small pad with small diameter threaded rod supports.

The power supply and conduit to FP are poured into the base beneath the pump. Inlet/outlet piping is supported from floor above. Recommendation would be to install a supporting pipe and pump structure of

substantial integrity to support the weight of this piping and pumps.

Where fire pumper line is supported from the bypass line, the recommendation would be to provide pipe stands and transverse steel rail for support from the floor.

Reference NFPA 20 for detailed description of test procedures and the attached maintenance schedule regarding components, activity and frequency.


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Fire Pump Assembly Maintenance Schedule Component Application Frequency

1. Flush Piping Test Five (5) years 2. Fire Department Connection Inspection Monthly 3. Supervised Control Valves Inspection/Maintenance Monthly/Annual 4. Main Drain Flow Test Quarterly 5. Pressure Gauge Calibration Test Annual 6. Waterflow Alarms Test Quarterly 7. Water Pressure Inspection Weekly 8. Low Point Drains Test Fall


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IV. Wet Pipe Sprinkler System Overview/major system components:

The basic design of this system is a hydraulically calculated system as determined in NFPA 13 Density/Area Curves Figure No. 11.2.3.1.1 and 11.2.3.1.2 Hose Stream Allowance.

All sprinkler piping is schedule 40 black steel with grooved ends and cast fittings and mechanical couplings on sizes 2-1/2 and larger. Piping 2 and less is also schedule 40, black steel but with threaded ends and threaded cast fittings.

The sprinkler head styles vary as determined by application and they are as follows: o Pendent style (downward trajectory) with escutcheon in chromed finish, 155

temperature limitation, orifice. o Upright style (upward trajectory) in standard brass finish, 200 temperature

limitation, orifice. o Concealed pendent style (downward trajectory) with white ceiling cover plate,

155 temperature limitation, orifice. o Horizontal sidewall style (horizontal pattern) with white recessed escutcheon

155 temperature limitation, orifice.

Pipe hangers are traditional clevis type suspended from structure on all threaded rods. Reference the attached basic wetpipe floor control valve assembly FS2.


The wet pipe sprinkler system is a hydraulically calculated system based on a combination of Ordinary Hazard Group 1 application with 0.15 GPM over 1,500 sq. ft. minimum area of operation for all lab areas with a maximum of 130 sq. ft. coverage per sprinklers and a Light Hazard with 0.1 GPM over 1,500 sq. ft. minimum area of operation for all office/administrative areas with a maximum 225 sq. ft. coverage per sprinkler. This is in accordance with NFPA 13, State and Local Standards. The maximum area of protection is 52,000 sq. ft. for Light and Ordinary Hazard.

System Description:

The wetpipe sprinkler system is a fixed fire suppression network of water pressurized piping and closed heat sensitive automatic sprinkler heads in heated spaces only. These heads are located and spaced per specific application based on the aforementioned standards. In a fire event, the affected sprinkler(s) release and distribute water over the fire to extinguish or control until the fire brigade arrives. Note, only sprinklers in the immediate fire area will release thereby minimizing any water damage.


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System Interface to Other Systems:

The only interface relative to the wetpipe sprinkler system is indirect through water flow detecting devices located at the source of the supply branch to a particular fire zone. This supervisory device communicates with the building fire alarm, building automation system and exterior electric alarm bell (if provided).


As a fire begins, the ambient temperature rises to the threshold of the local sprinkler head(s).

As the temperature rises higher, a sprinkler fuses/breaks causing water to discharge over the fire source.

This flow is recognized by the flow switch on the piping feeding this zone. The flow switch relays a signal to the addressable fire alarm with the alarm indication

and its zoned location.

The fire alarm relays the message to the local fire brigade as well as the building automation system.

Safety Consideration, Operation and Maintenance:

Continued observation of water stained ceilings and or walls should be taken seriously and reported for signs of pipe, fitting or valve failure which would affect the system in time of need.

Triggering of false alarms may imply hidden leakage in the network and should be investigated and repaired.

Sprinkler heads exposed in utility or areas subject to abuse (whether intentional or not) should be protected with wire cages.

Piping containing water should never be run in or through a space which could see freezing temperature even for a short while.

Troubleshooting:

The best means of trouble shooting a sprinkler system is accomplished through testing of flow, alarm and possibly water pressure at regular intervals.


The entire network should be reviewed indentified in segments (preferable as they relate to the addressable fire alarm system), arranged into a service matrix schedule format based on a regular calendar time frame for the record and documentation should be maintained.

Reference NFPA 26 for detailed descriptions of test procedures and the attached maintenance schedule regarding components, activity, and frequency.


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Wetpipe Sprinkler System Maintenance Schedule Component Application Frequency

1. Flush Piping Test Five (5) years 2. Pressure Gauge Calibration Test Annual 3. Sprinkler Heads Test 50 Years 4. Waterflow Alarms Test Quarterly 5. Water Pressure Inspection Weekly 6. Low Point Drain Test Fall 7. Supervised Control Valves Inspection/Maintenance Monthly/Yearly


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V. Drypipe Sprinkler System Overview/Major System Components:

The basic design of this system is a hydraulically calculated system as determined in NFPA 13 Density/Area Curves figure No. 11.2.3.1.1. and 11.2.3.1.2, Hose Stream Allowance. In addition, Section 11.2.3.2.5 increases the area of operation by a 30% margin without an increase in density.

All sprinkler piping is schedule 40, galvanized steel with grooved ends and galvanized fittings and mechanical couplings on sizes 2-1/2 and larger. Piping 2 and less is also schedule 40, galvanized steel but with threaded ends and threaded galvanized fittings.

The sprinkler head styles are as follows: o Pendent style (downward trajectory) with escutcheon in chromed finish, 155

temperature limitation, 1/2 orifice. o Upright style (upward trajectory) in standard brass finish, 200 temperature

limitation, orifice

Pipe hangers are traditional clevis type suspended from structure on all threaded rods. The system drypipe valve DR2 installation is located in the basement level mechanical

area within the fire pump room (northwest corner). The installation is comprised of the following:

o 3 supervised grooved style, butterfly valve. o 3 grooved style, vertical mount, Victaulic model no. S756 Firelock drypipe

valve assembly. o Base mount air compressor DPAC Emglo Company Jenny model no. F1251BS,

HP 1725 RPM, 120-volt, 60 HZ, 8.6 FLA o All drains discharge collectively to the local floor drain with an air gap. o The unit base frame is suspended on small diameter threaded rods attached to

box style unistrut rails.

Reference the attached basic drypipe sprinkler system schematic FS3 and field photos nos. 16, 17, and 18.

Design and operating conditions: The drypipe sprinkler system is a hydraulically calculated system based on Ordinary

Hazard Group 1 application with 0.15 GPM over 1950 sq. ft. minimum area of operation for the following ground floor level areas:


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Room No. Room Name Area

X103L Lobby 336 sq. ft. 1105 Facility Manager 132 sq. ft. 1107 US Mail 88 sq. ft. 1168 LN2 Room 112 sq. ft. 1170 Loading dock 1102 sq. ft. 1170A West Storage 77 sq. ft. 1170B Dry storage 143 sq. ft. 1170C Trash room 420 sq. ft. 1170D Loading area 2014 sq. ft. 1170M Emergency generator 462 sq. ft. 4,886 sq. ft.

These sprinkler heads are limited to a maximum 130 sq. ft. area of coverage in accordance with NFPA 13, State and Local standards.

The sprinkler head count is 37 total in this area with: o 4 pendent type o 33 upright type

The air compressor maximum capacity is 290 gallons volume output in 30 minutes at 40 PSI, pump on setting is 30 PSI off is 40 PSI.

System Description:

The drypipe sprinkler system is a modified version of a wetpipe system in that it is water based but the water is held back on the inlet side of the drypipe valve. Downstream of this valve, the piping is pressurized with compressed air from the base mounted air compressor. It is this compressed air that holds the drypipe valve closed. The pipe network includes closed heat sensitive sprinkler heads. This type of system is normally employed only in areas which may be subject to freezing conditions.

These heads are located and spaced per specific application based on the aforementioned standards. In a fire event, the affected sprinkler(s) release and allow the air in this piping to escape. Upon reduction in pipe pressure the drypipe valve opens and allows water to fill the piping and distribute water over the fire to extinguish or control until the fire brigade arrives. Again, note that only sprinklers in the immediate fire area will release, thereby minimizing any water damage.

There is a 1 inspectors test station from the drypipe network exiting the southwest corner wall (near columns no. 3/L15) to the exterior on grade.


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The drypipe sprinkler system interfaces directly with the local air compressor, building fire alarm, electric alarm bell (if provided) and building automation systems through integral supervisory devices.


As a fire begins, the ambient temperature rises to the threshold of the local sprinkler head(s).

As the temperature rises higher a sprinkler fuses/breaks causing the loss of air pressure contained within the piping.

This loss of pressure allows the drypipe valve to open causing water to quickly flow into the pipe network.

This loss of air pressure is recognized by the supervisory device (pressure switch) and relays the signal to the addressable building fire alarm with the alarm indication and its zoned location.

When water reaches the open sprinkler head, it discharges over the fire source. The fire alarm relays the message to the local fire brigade as well as the building

automation system. Safety Consideration, Operation and Maintenance:

Sprinkler heads in this network located in utility spaces on spaces with no ceiling should be installed with wire cages to avoid accidental breakage.

Continued observation for the beginning of pipe/fitting leakage should be taken seriously and reported and repaired prior to major water damaged occurring.

Frequent cycling of the air compressor may imply a small but growing air loss issue. Troubleshooting:

The best means of troubleshooting this sprinkler system can be accomplished through monitoring and testing of flow alarm and air pressure at regular intervals.


Reference NFPA 26 for detailed descriptions of test procedures and the attached maintenance schedule regarding components, activity and frequency.


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Drypipe Sprinkler System Maintenance Schedule Component Application Frequency

1. Flush Piping Test Five (5) years 2. Air & Water Pressure Gauge Calibration Test Annual 3. Supervised Control Valves Inspection Maintenance Monthly/Yearly 4. Main Drain Flow Test Quarterly 5. Sprinklers Test 50 years 6. Waterflow Alarms Test Quarterly 7. Drypipe System Valves Open/Close Semi-Annual 8. Air/Water Pressure Inspection Weekly 9. Priming Water Level Inspection Quarterly 10. Low Point Drains Test Annual

11. Drypipe Valve

Trip Test/Full Flow Trip

Annual-Spring/ Annual-Fall

12. Quick Opeining Devices Test Semi-Annual


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VI. Standpipe System Overview/Major System Components:

The automatic wetpipe, Class I standpipe systems in this building are primarily composed of a 6 vertical stack riser, continuous from lowest to highest floor level which serves various fire hose valves throughout. The standpipes (3 total), two (2) of which are located in enclosed stairways (west zones) originating in Stair No. X143S and Stair No. X140S (north and south) and one (1) is enclosed in an interior shaft (east zone). These standpipes also supply the entire wetpipe sprinkler network. A floor control assembly consisting of a supervised floor control valve, electric flow switch and inspectors test station (with drain) is installed near the ceiling of each floor level in each zone. This assembly FCV1 supplies the sprinkler main to that respective floor zone.

There are three distinct standpipes in this building. They all originate in the basement level and all are 4 in size.

Reference appendix field photos Nos. 19, 20, 21, 22 and attached schematics FS4, FS5, and FS6.


The minimum flow rate of this hydraulically designed system is 500 GPM for the most remote standpipe and 250 GPM for each additional standpipe located in a required exit stairway. In this case (2 total) 750 GPM.

The minimum pressure requirement is 100 PSI at the hydraulically most remote 2-1/2 hose connection.

By code (NFPA 14), it is not necessary to add the sprinkler demand to a building which is protected throughout by an automatic sprinkler system.

The standpipe system main drain for a 4 size or larger standpipe is a maximum of 2 size.

The water flow minimum duration requirement for a Class I system is 30 minutes. System Description:

The standpipes are schedule 40, black steel with grooved ends and mechanical couplings.

The standpipe isolation valves are electronically supervised type, horizontal butterfly valves with grooved mechanical couplings.

The floor control assembly serving each floor/zone is composed of an electronically supervised type horizontal butterfly valve with grooved/mechanical couplings, an electronic vane type flow switch with time delay and an inspection test and drain with globe valve, drain port and sight glass window.

The hose valve cabinet stations located in the stairwells are recessed, fire rated enclosures with 2-1/2 rough chromed angle type globe valves installed on a 15 angle downward including chained caps. The cabinets are white enamel painted steel with


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duo-glass and steel panel doors. The cabinets are lockable and also have large external identification labels.

The hose valve cabinet stations located throughout the building are primarily recessed, fire rated enclosures with 2-1/2 rough chrome, angle type globe valve installed on a 15 angle downward including chained caps and also including a 10 lb. ABC fire extinguisher. The cabinets are white enamel painted steel with duo-glass and steel panel doors. A few locations have surface mounted cabinets. All cabinets are lockable and have large external identification labels.


The standpipe system interfaces with the building fire alarm and building automation system through the supervisory attachments (i.e. flow switch and tamper switch) at the main isolation valve and floor control valve assemblies.


If the main isolation valve(s) or floor control valve(s) are closed, an alarm is signaled at the fire alarm/building automation stations.

If flow is detected at the flow switch(es) in the floor control assemblies, an alarm signal is conveyed to the fire alarm/building automation stations.

When an alarm arrives at the fire alarm station it is also relayed to the fire brigade. Safety Considerations:

All supervised valves and attachments should be installed in occupied spaces at an elevation above and out of reach of occupants to preclude vandalism.

Operation and Maintenance Issues:

All valves and attachments should be observed on a regular basis to ensure their integrity and functionality.

Maintain accurate records of fire extinguisher maintenance and/or replacements. System Analysis and Recommendations:

Reference NFPA 26 for a detailed description of test procedures and the attached maintenance schedule regarding components, activity and frequency.

Standpipe System Maintenance Schedule

Complete Application Frequency 1. Supervised/Control valves Inspection/Maintenance Monthly/Annual 2. Waterflow Alarms 3. Piping/Fittings Inspection Annual 4. Main Drain Test Quarterly 5. Hydraulic Nameplate Inspect Quarterly


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VII. Clean Agent Extinguishing System Overview/Major System Components:

The clean agent extinguishing system (hence forth CAES) is a self contained Inergen system and is located on the fourth floor level south end. This installation is dedicated to Room No. 4175, Computer Farm and Room No. 4179, Computer Servers. Only Room No. 4179 is suppressed by CAES in both occupied floor and under floor areas. Reference field photos #23 and #24 in attached appendix and attached basic Inergen system schematic (page 28).

CAES is a comprehensive system comprised of this following:

Detection devices photoelectric and ionization type Control equipment microprocessor based addressable controller with remote alarm

manual pull station, abort switch, time delay, relays and battery backup.

Clean agent cylinders 2 banks of 5 cylinders/maniford with 439 cu. ft. capacity each Inergen agent (52% nitrogen, 40% argon and 8% carbon dioxide), all inert gases Discharge nozzles - 180 and 360 aluminum. System piping schedule 40 black steel with no. 300 PSI galvanized steel threaded

fittings.

Annunciating devices electric alarm bell, horn-strobe and strobe lights. Mounting hardware Cylinder frame and straps Cylinder valves electric solenoid operated Emergency breathing apparatus.

Design and operating conditions: This system, CAES is designed to suppress room no. 4179 based on the following conditions:

Occupied space is 269 sq. ft., 17-10H X 109W X26-0L, which totals 4,724 cubic feet volume, with no ceiling installed.

Underfloor space is 269 sq. ft., 1-0H X 109W x 26-0L, which totals 269 cubic feet 70F minimum temperature 70F maximum temperature 35.6% minimum concentration 35.6% maximum concentration 34.2% requested concentration Volume Inergen required is 2,092 cubic feet Volume Inergen supplied is 2,195 cu. ft. (+5%)

System Description: o The installed CAES system is an engineered system, which utilizes a fixed

discharge nozzle distribution network served by multiple DOT approved and manifolded storage cylinders. The dispersing agent will extinguish Classes A, B


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and C hazard fires by cooling and lowering the space oxygen content below the level, which supports combustion. The system may be automatically or manually operated. The system accessory components provide alarms, ventilation shutdown, door closure and the initiation of the release function.

System Interface to Other Systems: o The system interfaces with the building fire alarm system for monitor and alarm

capability. In addition, the system release devices interface with the buildings HVAC systems for air handling supply and/or ventilation shutdown as well as door release for closure. This systems power is fed from the building emergency power source.

Sequence of Operations: o Event #1 Single detector in alarm mode

Discrete zone alarm LED illuminates at panel Panel initiates audible alert signal Remote electric alarm bell sounds

o Event #2 Detecting device in opposite zone in alarm mode Discrete zone alarm LED illuminates at panel Panel initiates audible alert signal Alarm horn/strobe initiates audible/visual alert signal

o Event #3 Occupant evacuation time delay (30 seconds) expires Instantaneous Inergen agent release Alarm horn/strobe illumination is now continuous Discharge warning strobe begins flashing Electric pressure switch de-energizes computer room equipment, HVAC

equipment, related HVAC dampers and any door hold open devices to isolate the space being protected.

o Event #4 Supervisory signal indication at panel Yellow LED illuminates Panel initiates audible alert signal

o Event #5 Trouble signal indication at panel Second yellow LED illuminates Panel initiates additional audible alert signal

o Event #6 Optional abort mode Holding abort button down in the event of false alarm will reset alarm

panel Release of abort prior to panel reset will reinitiate the time delay (30

seconds) feature.

Safety Considerations:


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The CAES disbursing agent poses no threat to software and hardware because it does not break down to any damaging acidic byproducts. This clean agent has been tested on computers and electrical switchgear and has proven to cause no harm. Oxygen content is reduced to the 10-13% range (normal air is 21%), but the addition of carbon dioxide counteracts the risk of low oxygen content to humans. The combination of 10% oxygen and 4% carbon dioxide results in the equivalent of oxygen contained in breathing air with 21% oxygen. Since Inergen is composed of naturally occurring gases, it poses no adverse effect to the environment. Its ozone depletion potential, global warming, potential thermal decomposition by-products and atmospheric lifetime ratings are all zero.

Operation and Maintenance Issues:

The CAES system should be tested semiannually as well as thoroughly inspecting all components for proper operation by a trained and competent service company. All tests and reports should be recorded and documented for the owners records. Both clean agent quantity and pressure should be verified on each cylinder. If either a 5% loss of weight or 10% loss of pressure is evident, refill or replacement should occur. If the amount of agent is determined other than by weight, the testing equipment must be listed/approved and documented as well. This information should also be attached to each cylinder.

Inspection of cylinders that have been inoperative for a period of 5 years should receive a thorough visual inspection per CGA pamphlet C-6 directives. If any cylinder shows signs of physical damage further strength tests shall be performed. Inspection of the protected environment should also occur on at least a semi-annual basis. This is determined if the protected space sealed envelope has been violated with added barrier penetrations. If visual inspection reveals an inability to contain clean agent discharge these issues must be corrected and where any uncertainty is involved, the space should be tested for containment integrity. This also includes the entire area beneath the raised floor. All system piping should be hydrostatically tested for a period of 10 minutes at 150-psig and no more than 20% pressure drop is allowed. Pressure should be applied in 50-psig increments. When an actual discharge test is performed, all cylinders shall be weighted prior to and following discharge. Verify environment volumes(s) and compare to recorded design data. An allowance for HVAC shutdown and damper closure should be considered.


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All related field circuitry should be measured for ground fault and short circuit conditions. This should involve removal of all detection devices and provision of jumpers to complete these circuits for testing and subsequent device reinstallation. Verification that the power source is from a dedicated, reliable and uninterruptable source should be confirmed and documented. Auxiliary alarms, displays, annunciations and de-energizing equipment/devices should be checked for proper operation, including interface relays to the building automation system and remote monitoring station. As defined in NFPA, Clean Agents are electrically non-conductive gases, which do not leave residue after evaporation.

Troubleshooting System Analysis and Recommendations:

Provide additional emergency breathing apparatus in Room No. 4175 Perform all testing indicated herein and provide record document for the owners

records

In lieu of a discharge dump test, perform a room pressurization test by an approved company if acceptable to the authority having jurisdiction


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Responsibility for Operation and Maintenance: o Facilities Operations Development o 200 Tuttle Park Place o (614) 292-6158


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MECHANICAL ROOM NO. 120M

PHOTO NO. 1


PHOTO NO. 2


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PHOTO NO. 3


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FIRE PUMP ROOM BASEMENT

PHOTO NO. 4


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NORTHEAST SIDE YARD

PHOTO NO. 5


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PHOTO NO. 6


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PHOTO NO. 7


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FIRE PUMP ROOM BASEMENT PHOTO NO. 8 PHOTO NO. 9

EXTERIOR BUILDING NORTH

PHOTO NO. 10


PHOTO NO. 11


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FIRE PUMP ROOM BASEMENT PHOTO NO. 12


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FIRE PUMP ROOM BASEMENT PHOTO NO. 13


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SOUTH STAIR TOWER ROOF LEVEL

PHOTO NO. 14

SOUTH STAIR TOWER ROOF LEVEL

PHOTO NO. 15


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FIRE PUMP ROOM BASEMENT PHOTO NO. 16 PHOTO NO. 17


PHOTO NO. 18


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TYPICAL STANDPIPE SYSTEM COMPONENTS PHOTO NO. 19 PHOTO NO. 20

TYPICAL STANDPIPE SYSTEM COMPONENTS PHOTO NO. 21 PHOTO NO. 22


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COMPUTER FARM ROOM NO. 4175 PHOTO NO. 23

COMPUTER FARM ROOM NO. 4175 PHOTO NO. 24


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Valve Schedule

Valve Ref. Zone Location Description Valve Size Notes

DC1 Basement Double check detector assembly 8 1, 2

FP1 Basement Fire pump main isolation valve 8 2, 3

SC

Basement

Fire pump discharge Shut off (to standpipes) valve

8

2

BP1 Basement Fire pump bypass valve 8 2

TC1 Basement Fire pump test header isolation valve 8 2

BC1 Basement Ball check valve 8 4

DR1 Basement Drypipe system isolation valve 3 2, 3

DR2 Basement Drypipe valve 3 5

DDR Basement Drypipe main drain valve 2 4

Z1B

Basement SW Stair

Floor control valve FCV1

2-1/2

6

ZD1B

Basement SW Stair

Wetpipe main drain valve

2

4

Z2B

Basement NW Corridor


2-1/2

6

ZD2B



2

7

Z3B

Basement East Stair


2-1/2

6

ZD3B

Basement East Stair

Wetpipe main drain vavle

2

7

TV1 Outdoors East Fire pump test header discharge (3 valves) 2-1/2 8

HC Varies Fire hose valve cabinet 2-1/2 9

HC1

Basement SW Stair

Supervised service valve

2-1/2

10

HC2

HC3

Basement SE Corridor


2-1/2

10

HC4

Basement SW Corridor Stair


2-1/2

10

HC5

Basement SW Center Corridor


2-1/2

10

HC6

Basement Fire pump room


2-1/2

10

HC7

Basement NW Center Corridor


2-1/2

10


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HC8



2-1/2

10

SP1

Basement NW Center Corridor

Standpipe main isolation

6

2, 10

SP2

Basement SW Stair


6

2, 10

SP3

Basement SE Corridor


6

2, 10

Zone valve schedule notes:

1. Main backflow device, Ames model no. 3000SS with Ames model no. 2000B bypass; detector meter, Badger with cubic feet readout and flanged OS&Y gate valves by Kennedy. Installation rests on two pipe support stands.

2. Electric supervised valve 3. Service valve application 4. Drain line indirected to local floor drain. 5. Drain valve, Victaulic model no. S756 Firelock with air maintenance trim and flanged

fittings. 6. Electric supervised valve, flow switch and inspectors test fitting. 7. Drain line discharges to outdoors 8. Three-way, freestanding post with caps and chains 9. Fire hose valve cabinet (Class I) some with fire extinguishers. Sizes vary most

recessed. 10. Located above ceiling 11. Drain stack discharges to exterior grade. 12. Continuous drain stack down to floor below. 13. Valve operator is roof mounted. 14. Valve wheel is chain locked 15. Emergency shut-off to elevator equipment room.


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Valve Schedule


HC9

Ground NW Corridor


2-1/2

10

HC10

Ground SW Corridor


2-1/2

10

HC11

Ground SW Corridor


2-1/2

10

HC12

Ground SW Corridor


2-1/2

10

Z1G

Ground SW Stair


2-1/2

6

ZD1G

Ground SW Stair


2

11

Z2G

Ground NW Corridor


2-1/2

6

ZD2G

Ground NW Corridor


2

11

Z3G

Ground East Stair


2-1/2

6

ZD3G

Ground East Stair


2

11


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Valve Schedule


HC13

2ND Floor NW Corridor


2-1/2

10

HC14

2nd Floor E Corridor


2-1/2

10

HC15

2nd Floor SW Corridor


2-1/2

10

Z12

2nd Floor SW Stair


2-1/2

6

ZD12

2nd Floor SW Stair


2

12

Z22

2nd Floor NW Corridor


2-1/2

6

ZD22

2nd Floor NW Corridor


2

12

Z32

2nd Floor East Corridor


2-1/2

6

ZD32

2nd Floor East Corridor


2

12


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Valve Schedule


HC16

Mezzanine East Corridor


2-1/2

10

HC17

Mezzanine NW Corridor


2-1/2

10

Z1M

Mezzanine SW Stair


2-1/2

6

ZD1M

Mezzanine SW Stair


2

12

Z2M



2-1/2

6

ZD2M



2

12

Z3M



2-1/2

6

ZD3M



2

12


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Valve Schedule


HC18

3rd Floor NW Corridor


2-1/2

10

HC19

3rd Floor E Corridor


2-1/2

10

HC20

3rd Floor SW Corridor


2-1/2

10

HC21

3rd Floor SW Stair


2-1/2

10

Z13

3rd Floor SW Stair


2-1/2

6

ZD13

3rd Floor SW Stair


2

12

Z23

3rd Floor NW Stair


2-1/2

6

ZD23

3rd Floor NW Stair


2

12

Z33

3rd Floor East Corridor


2-1/2

6

ZD33

3rd Floor East Corridor


2

12


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Valve Schedule


HC22

4th Floor NW Stair


2-1/2

10

HC23

4th Floor SW Stair


2-1/2

10

HC24

Ground Floor SW Stair


2-1/2

10

Z14

4th Floor SW Stair


2-1/2

6

ZD14

4th Floor SW Stair


2

12

Z24

4th Floor NW Stair


2-1/2

6

ZD24

4th Floor NW Stair


2

12

PIV

4th Floor SW Stair

Post indicator valve

4

10, 13


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Valve Schedule


ZR2

Penthouse N Stair Tower


2-1/2

6

ZD2R

Penthouse N Stair Tower


2

12

EV1

Vestibule N Stair Tower


1-1/2

2, 15

PIV SW Rooftop Post indicator valve wheel operator 4 14

RH1 SW Rooftop Three-way freestanding hydrant 2-1/2 (3)


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SECTION 2. PLUMBING: Sanitary Waste and Vent System

2.1 Overview

The sanitary waste and vent system is the basic building system for means of removing wastewater from the building back to the building sewer and on to a wastewater treatment facility. The system is connected to plumbing fixtures throughout the building which includes water closets, urinals, lavatories, sinks, floor drains, etc.

The sanitary waste system for the ground through fourth floor is a gravity system and the basement level has a duplex sewage ejector. The sewage ejector serves the plumbing fixtures on the basement level and pumps the wastewater to the gravity sanitary sewer on the ground level. The duplex sewage ejector is located in the basement level mechanical room 120M.

Duplex Sewage Ejector SE-1

Zoeller Pump Co. model G6284 (two (2) pumps)

Capacity: 64 GPM at 27 ft. hd. (each pump)

H.P., 460 volt, 3 phase

3 discharge

Electrical power from motor control center EMCCI

Reference: Plumbing Equipment Schedule on drawing P3.01 and detail F on drawing P4.01.

Duplex Sewage Ejector SE-1

2.2 Design Conditions

Not applicable for this system.

2.3 Systems Interface to Other Systems

The sanitary waste and vent system does not interface with any other system and the effluent from the building sanitary system connects to the site sanitary sewer.

2.4 Operations and Maintenance Considerations

The sanitary waste and vent system should require minimum maintenance. Plumbing fixtures and trim should be inspected one (1) time a year for proper operation and leaks. Fixture traps should be checked for proper water seal and floor drains with trap primers should be verified for proper operation.


The duplex sewage ejector pumps should be checked four (4) times a year for proper operation. The sump pit level controls should be verified for proper control. Listen for proper check valve operations. Check for even operating times on duplex pumps. Uneven times indicate a defective unit, float switch or control. Once a year the sump basin should be inspected and cleaned.

2.5 Safety Considerations

Shut-off electrical power supply before servicing submersible sewage pumps. Submersible pumps contain oils which becomes pressurized and hot under operating conditions and 2.5 hours should be allowed after disconnecting electrical power before attempting pump service.

The primary safety considerations are to prevent unexpected energization or startup of motors, and the release of hazardous energy, including steam, during service or maintenance activities.

The guidelines for both the proper electrical lock-out/tag-out procedures and for preventing the accidental release of steam should be implemented and included in the training program for all personnel involved in servicing this equipment. The accepted standards as defined by OSHA for these safety procedures is CFR 1910.147, which is in the appendix of this report and available at this web site: http://www.osha.gov/SLTC/controlhazardousenergy/index.html.

Additionally, the University should maintain and follow safety procedures in accordance with the state and federal guidelines as adopted by the Public Employee Risk Reduction Act (Ohio Revised Code 4167.07).




Reference information for Sanitary Waste and Vent System can be located as indicated below:












SECTION 3. PLUMBING: Domestic Cold Water System

3.1 Overview

The domestic cold water system supplies the entire building with a potable water supply. It enters the building through a 4 pipe located in the northeast side of the basement level at column line No. 9. Refer to project record drawing P2.01. A 4 reduced pressure backflow preventer is provided on the service line. See photo below of reduced pressure backflow preventer.

A duplex booster pump system re-pressurizes the system to distribute the supply water throughout the third and fourth floor, while the line through the pressure reducing valve serves the basement, ground, and second floors. See photo below of duplex pump system WBP-1.

A safety water system is run throughout the building to serve emergency showers, eyewash stations and drench hose units in laboratories. A thermostatic mixing valve is located in the basement level mechanical room 120M to temper the safety water system. See photos below of thermostatic mixing.

Reduced Pressure Backflow Preventer (Water Service)

Wilkins Co. Model 375, 4 size.

Ductile iron ASTM A536 grade 4 valve body.

Internals: stainless steel, 300 series

Seal rings: EPDM (FDA approved)

O-rings: Buna Nitrile (FDA approved)

Reference: Refer to Drawing No. P4.01, Detail A and Plumbing Equipment Schedule on Drawing P3.01.

Duplex Booster Pump System WBP-1

Canarus Model No. de-200-35, Serial No. ID-03-0160.

Capacity: 100 gpm (each pump)

5 H.P., 460 volt, 3 phase. 185 gallon hydrocumulator tank

Reference: Refer to Plumbing Equipment Schedule, Drawing No. P3.01 and Detail L/P4.01.

Thermostatic Mixing

Leonard model TM-5125 thermostatic water mixing valve, adjustable high temperature limit stop and inlet checkstops.

Reduced Pressure Backflow Preventer

Duplex Booster Pump System

Thermostatic Mixing Valve



The following data was observed in the basement floor Mechanical Room No. 120M at the water service entrance:

Inlet pressure into the building: 84 psi

Pressure downstream of pressure reducing valve: 68 psi

Pressure downstream of booster pumps: 83-102 psi

3.3 System Interface to Other Systems

Domestic Hot Water System Served with 2 domestic cold water line.

CAP I Pure Water System Served with 1-1/2 domestic cold water line thru 1-1/2 backflow preventer.

CAP II Pure Water System Served with 2 domestic cold water line thru 2 backflow preventer.

Hot Water Heating, Chilled Water and Re-Boiler Deaerator Make-Up Water Served with 1-1/2" domestic cold water line thru 1-1/2" backflow preventer.

Safety Water System Served with 2 domestic cold water line.

3.4 Operations and Maintenance Considerations

The duplex booster pump should be checked four (4) times a year for proper operation. Check for even operating times on duplex pumps. Check for pump noise and vibration and determine if noise is in motor or pump. If noise is in the motor check for bearing problem and check motor/pump alignment. If noise is in the pump verify that the valves on the suction side of the pump are open to prevent cavitation. Check pump bearings and mechanical seals.

All reduced pressure backflow preventers should be inspected and tested two (2) times a year. A differential pressure gauge of the type recommended by the valve manufacturer should be used for testing. Local code requires the building water service backflow preventer to be inspected and tested once year by a certified inspector.

The safety water system and thermostatic mixing valve is served from the domestic C.W. system that serves the basement through second floor level. The safety water system serves the entire building and the system pressure should be checked on the fourth floor level.









Reference information for Domestic Cold Water System can be located as indicated below:


















SECTION 4. PLUMBING: Domestic Hot Water System

4.1 Overview

Domestic hot water is supplied throughout the building. System consists of two (2) steam-to-hot water converters located in the basement level mechanical room 120M. Domestic water heater WTH-1 serves hot water to the basement, ground and second floors and domestic water heater WTH-2 serves the third and fourth floors. A hot water return loop for each heater along with an in-line return pump on each system circulates water throughout the building in order to maintain system temperature. Domestic hot water return loop circulating pumps are identified as RCP-1 and RCP-2.

Water Heaters No. WTH-1 and WTH-2 (See photo below.)

Reco model no. HXV150-G-635SS-SPNS.

Semi-instantaneous quick recovery heater.

770 gph of 40F to 140F. water when supplied with 15 psi steam @250F.

Reference: Detail B on drawing P4.01 and Detail A, System Diagram on drawing H3.02, and Plumbing Equipment Schedule on drawing P3.01.

Expansion Tank No. ET-1 and ET-2

Amtrol Expansion Tank model no. ST25V.

Total volume 10.3 gallons.

Maximum working pressure 150 psig.

H.W. Return Loop Circulating Pumps RCP-1 and RCP-2 (See photo below.)

Bell & Gossett bronze in-line pump model PD 38T.

In-line pump with 3 flanged connections.

Capacity: 40 gpm at 31 ft. head.

Motor: 1 H.P., 480 volt 3 phase

Thermostatic Master Mixing Valve (See photos below.)

Leonard model TM-520-DT thermostatic water mixing valve, adjustable high temperature limit stop, and inlet checkstops.

Water Heaters WTH-1 and WTH-2


H.W. Return Loop Circulating

Pumps RCP-1 and RCP-2 Thermostatic Master Mixing Valve


The domestic hot water systems are designed for 110F. outlet water temperature. The maximum expected water flow is 38 GPM at 20 psi system pressure drop for each system.

4.3 System Interface to Other Systems

The domestic water heater is provided with steam from the re-boiler. There is one re-boiler; therefore, there is not back-up for the steam supply to the water heaters and the downtime for servicing the re-boiler will need to be coordinated with the building needs since hot water will not be available.

Hot water return loop circulating pumps RCP-1 and RCP-2 are not connected to the emergency generator system.

4.4 Operation and Maintenance Considerations

It shall be noted that although there are two domestic water heaters it is not a redundant system. The water heaters serve different floors of the building. Since only one heater serves each system it is important that the units be inspected and serviced four (4) times a year to avoid unexpected shutdowns.

The thermostatic mixing valves should be inspected four (4) times a year for leaks and the proper temperature regulation. Once a year the valves should be serviced and the port sleeve/bridge cleaned and the packing and gaskets replaced.








4.