H40.REV

EMERGENCY DIESEL GENERATOR SYSTEMS

NOTE: FINAL COPY: MAY, 1987

NOTE: DIESEL GENERATOR SETS ARE GENERALLY PROVIDED UNDER ELECTRICAL WORK. HOWEVER, IN SOME INSTANCES THEY ARE PURCHASED BY THE OWNER. IN EITHER CASE IT IS IMPORTANT THAT THE HVAC SPECS BE FULLY COORDINATED WITH THE ELECTRICAL SPECS. PRIOR TO COMPLETING THIS SECTION, IT SHOULD BE CLEARLY DETERMINED WHAT SERVICES ARE REQUIRED AND WHAT ACCESSORIES WILL BE SUPPLIED BY THE GENERATOR MANUFACTURER

NOTE: COORDINATE THIS SECTION WITH FUEL OIL TANKS AND SYSTEMS

NOTE: CHECK CODES FOR INSTALLATION OF TANK UNDERGROUND, ON GRADE, ABOVE GROUND AND INSIDE BUILDING AND EDIT

Part 1 -	GENERAL

1)	WORK INCLUDED

A.	Work included in this Section includes the providing of labor, materials, equipment and services necessary for a complete and safe installation in accordance with the contract documents and all applicable codes and authorities having jurisdiction for the following

1.	Fuel-oil system with piping, valves, fittings, day tank, storage tank, collecting pans, transfer pumps and controls and alarm actuators

NOTE: SILENCER IS USUALLY FURNISHED WITH THE GENERATOR.

2.	Engine exhaust system with piping, crankcase breather vent piping, float traps and insulation for exhaust piping and silencer, mounting and connecting silencer supplied by electrical.

NOTE: USE WHEN RADIATOR IS NOT FURNISHED AS AN INTEGRAL PART OF THE ENGINE BUT IS REMOTELY LOCATED

NOTE: ACCESSIBLE PIPING IN HABITABLE AND OCCUPIABLE ROOMS CARRYING FLUIDS AT TEMPERATURES EXCEEDING 165 DEG F SHOULD BE INSULATED TO PREVENT THE TEMPERATURE OF THE OUTER SURFACE OF THE INSULATION FROM EXCEEDING 60 DEG F ABOVE THE AMBIENT TEMPERATURE

3.	Engine jacket water cooling system with air-cooled radiator, pump, automatic controls and piping. For insulation for jacket cooling water piping, refer to Section INSULATION

NOTE: USE WHEN ENGINE IS TO BE STARTED BY COMPRESSED AIR, GENERALLY FOR LARGER ENGINES

4.	Compressed air starting system with air compressor, storage tank, moisture condenser, pressure-regulating valve assemblies, intake filter-silencer, controls and alarm indicators and piping

NOTE: LUBRICATION SYSTEMS ARE USED FOR LARGER DIESEL INSTALLATION WHERE THE OWNER DESIRES TO HAVE AN ADEQUATE SUPPLY OF OIL WITHOUT HAVING TO RELY ON DRUMS

5.	Lubrication oil system with storage tank, piping and pump

2)	RELATED WORK AND REQUIREMENTS

A.	Requirements of GENERAL CONDITIONS, DIVISION NO. 1 and Section GENERAL PROVISIONS FOR HEATING, VENTILATING AND AIR CONDITIONING WORK apply to all work in this Section

NOTE: EDIT TO SUIT PROJECT REQUIREMENTS. INCLUDE ONLY SECTIONS DIRECTLY AFFECTING WORK OF THIS SECTION

B.	Related work in the following Sections:

1.	PIPING.

2.	INSULATION.

3.	SHEET METAL WORK

4.	MOTORS

5.	MOTOR CONTROLLERS

6.	-----.

3)	REFERENCE STANDARDS

A.	Published Specifications' standards, tests or recommended methods of trade, industry or governmental organizations apply to work in this Section

B.	Comply with all applicable national, state and local codes and refer to Section GENERAL PROVISIONS FOR HEATING, VENTILATING AND AIR CONDITIONING WORK for additional Reference Standards

4)	QUALITY ASSURANCE

A.	Provide systems in accordance with the diesel generator manufacturer's recommendations

NOTE: FOR NEW YORK CITY ONLY.

B.	Equipment and piping require BS&A and NFPA approval.

C.	Prior to fabrication or installation of any portion of Emergency Diesel Generator Systems, they shall be reviewed and approved by diesel generator manufacturer, National Fire Protection Association and all authorities having jurisdication

NOTE: FOR NEW YORK CITY ONLY.

1.	New York City Building Department.

NOTE: FOR NEW YORK CITY ONLY.

2.	New York City Fire Department.

D.	Refer to Section GENERAL PROVISIONS FOR HEATING, VENTILATING AND AIR CONDITIONING WORK for Guarantee and other Quality Assurance requirements

5)	SUBMITTALS

A.	Submit shop drawings and product data for the following:

1.	For each system, provide dimensioned detail piping layout

2.	For tanks, provide size and capacity, connections, ASME certification and support and installation details

3.	For pans, provide size and capacity, connections and support and installation details

4.	Pumps, including pump curves.

5.	Air-cooled radiator.

6.	Air compressors and accessories.

7.	Tank gauge panel board.

Part 2 -	PRODUCTS

1)	BASE BID MANUFACTURERS

A.	Oil pumps: Kraissl, DeLaval Steam Turbine Co., Worthington Corp., Blackner Pump Div./Dover Corp. and Viking Pump Div., Houdville Industries, Inc

B.	Oil hand pumps: Crane Deming Pumps and Erie Mfg. Co.

C.	Oil system accessories: Preferred Utilities.

D.	Flexible connectors: American Brass Co., Packless Metal Hose, Inc. and Flexonics Division

E.	Air-cooled radiators: Young Radiator Co.

F.	Jacket water pumps: Buffalo Pumps, Worthington Corp. and DeLaval Steam Turbine Co

G.	Air compressors: Worthington Corp., Ingersoll-Rand Co. and Gardner-Denver Co

H.	Fiberglass oil tanks: Owens - Corning Fiberglass Corp. and Century Fiberglass

2)	PIPING AND ACCESSORIES

A.	Refer to Section "Piping" for the following:

NOTE: FOR INSTALLATIONS HAVING OIL STORAGE TANKS LOCATED ABOVE LOWEST LEVEL. CHECK LOCAL CODES FOR REQUIREMENTS

1.	Diesel oil: Fill, vent, oil tank test well, suction and return piping

2.	Engine exhaust and crankcase breather.

3.	Jacket cooling water.

4.	Compressed air.

5.	Lubrication oil.

B.	Valves, fittings, flanges, joints and accessories shall be as follows:

1.	For diesel oil, welded type minimum 125 lb wsp, (except as noted). See Section PIPING for welding type.

2.	For jacket cooling water: Minimum 125 lb wsp or 200 lb wog, except cast iron 150 lb wog and welded fittings, as specified under Section PIPING

NOTE: FOR SYSTEM DESIGN PRESSURES TO 175 PSIG.

3.	From ----- floor to ----- floor: provide 250 lb wsp or 200 lb wog

NOTE: FOR SYSTEM DESIGN PRESSURES TO 250 PSIG.

4.	----- floor and below: provide 250 lb wsp or 300 lb wog

C.	Check valves shall be spring loaded.

D.	For compressed air: minimum 250 lb wsp except fittings shall be as follows

1.	To 2 inch, provide screwed, 300 lb wsp malleable iron.

2.	2-1/2 inch and larger, provide welded type, as specified under Section "Piping"

E.	Fittings, flanges, joints and accessories shall be as follows:

1.	Minimum 125 lb wsp for vent from tank. Engine exhaust and crankcase breather shall be welding type as specified under Section "Piping" with long sweep type elbows.

F.	Fill line and test well terminals shall be cast iron body, cadmium plated body with brass cap and lock, similar to Preferred Utilities Type W.

G.	Vent terminals shall be full size of vent line, threaded, recessed cast bronze vent brick, similar to Riesner, double-brick size and weatherproof vent cap, similar to Preferred Utilities Junior Vent Protector. In the fuel oil supply line quick-closing, spring loaded, lever gate valve with fusible link arranged to close the valve automatically when the link melts, similar to Preffered Utilities valve type 110. Engine exhaust dampers shall be No. 10 USSG stainless steel damper blades and collars and collars shall be with angle flanges, matching flanges of connecting piping.

H.	Flexible connectors shall be of all bronze construction with bronze wire braid covering. For insulated piping, provide insulation over flexible hose before application of bronze wire braid and insulation shall be as specified for service. Type and pressure rating shall be as recommended by manufacturer to suit particular service

I.	Flexible connectors shall be similar to Flexonics pump connector.

J.	Refer to Section INSULATION for jacket cooling water and exhaust piping including silencer.

K.	Float traps shall be similar to Sarco Type F.

NOTE: USE CYLINDRICAL TANKS WHENEVER POSSIBLE. USE RECTANGULAR TANKS ONLY WHEN NECESSARY DUE TO SPACE RESTRICTION

3)	TANKS

TANK

A.	Cylindrical type diesel fuel-oil storage tank with capacity as noted shall be with minimum 5/16 inch thick steel construction in accordance with NFPA requirements complete with 24 inches diameter manhole, 16 inches inside ladder, lifting lugs and pipe connections as noted. Thoroughly wire-brush clean inside and outside and paint outside of tank with 2 coats of bitumastic paint consisting of 1 coat primer and 1 coat enamel. Refer to installation detail and Diesel Fuel Oil Flow Diagram

B.	Rectangular type diesel fuel-oil storage tank with capacity as noted shall be minimum 5/16 inch thick steel construction in accordance with NFPA requirements and all authorities having jurisdiction, complete with 24 inches diameter manhole, 16 inches inside ladder, lifting lugs and pipe connections as noted.Fabricate with corner angle construction at corners and braced on outside with structural steel members in accordance with requirements of NFPA, and all authorities having jurisdiction. Thoroughly wire-brush and clean inside and outside and paint outside of tank with 2 coats of bitumastic paint consisting of 1 coat primer and 1 coat enamel

NOTE: FOR CYLINDRICAL FIBERGLASS TANK INSTALLED UNDERGROUND.

C.	UL labeled horizontal underground cylindrical type diesel fuel-oil storage tank with capacity as noted shall be Fiberglass Reinforced Plastic (FRP) construction, for fuel oil storage, complete with 22 inches diameter manway, 12 inches inside ladder, lifting lugs, pipe connections as noted and hold down straps. Refer to installation detail and Diesel Oil Flow Diagram

NOTE: FIBERGLASS DOUBLE WALL UNDERGROUND FUEL OIL STORAGE TANK.

D.	Fuel Oil Storage Tank shall be factory fabricated double wall glass fiber reinforced polyester (GFRP) underground fuel oil storage tanks of capacity and at location as shown on drawings. Tank shall be horizontal cylindrical with spherical heads and designed for operation at atmospheric pressure. Tank shall be constructed, tested and installed in accordance with NFPA recommendations and comply with all regulations of authorities having jurisdiction. Tank shall be similar to Ownens Corning Fiberglass Corp. Model DWT-2P

1.	Tank shall meet the design loading conditions when buried in ground due to external hydrostatic pressure, surface H-20 axle loads (32,000 lbs/axle), internal loads due to 5 psi test pressure in annular space and primary tank, storage of fuel oil, and designed to support accessory equipment such as ladders, drop tubes, etc

2.	Annular Space: Tank shall have a space between the primary and secondary shell walls to allow for free flow and containment of all leaked product from the primary tank. Tank shall be designed to provide monitoring capability as noted. Accessbility to tank bottom, between primary and secondary walls shall be by one 4 in. NPT fitting located at each end of the tank. The conditions between the inner and outer tank shall be continuously monitored and may be as follows

a.	Vented to atmosphere.

b.	Sealed tank cavity.

c.	Vacuum (3 in. Hg. maximum). Positive air pressure (3 psi maximum)

d.	Hydrostatic pressure.

3.	Accessories: Tank manufacturer shall provide the following accessories

a.	GFRP anchor straps.

b.	One carbon steel ladder extending to bottom of tank with bolts, nuts, lugs

c.	Flanged manway shall be 22 in. I.D. complete with UL listed gaskets, bolts and cover. Each manway cover, shall have three 4 in. NPT fittings welded in place

d.	Manway riser pipe 48 in. diameter and 42 in. high shall provide access to each manway lid

e.	Steel 4 in. diameter NPT threaded fittings for piping connections for suction, return, vent, gage, fill and two spares

f.	4 in. diameter GFRP fill tube, factory installed and terminating 4 in. from bottom of tank

g.	Steel lifting lugs.

h.	UL certification plate shall be affixed to each tank

i.	Tank manufacturers statement that this conforms with 6NYC2R Part 614 New York State Department of Envioronmental Conservation must be permanently displayed

NOTE: CHECK TEST PRESSURES AND COORDINATE WITH TANK MANUFACTURER

4.	Installation and tests: Underground tank shall be installed in accordance with the written installation instruction of the tank manufacturer and shall be set on a minimum 18 in. reinforced concrete slab covered with minimum 12 in. thick pea gravel. Tank shall be covered with minimum 3 feet of pea gravel. Pea gravel shall be naturally rounded aggregate, clean and free flowing, conforming to the written requirements of the tank manufacturer. After tanks are set in place, test by applying internal air pressure of 5 psig, using soap suds to locate leaks. Repair leaks in accordance with the instruction of the manufacturer and under the on-site supervision of a representative of the manufacturer. Retest until all leaks are repaired. Tests shall be witnessed by the Engineer. Prior to backfilling, clean and coat all metal parts which will be below grade (including straps, bolts, piping) with protective coats of coal tar base pitch using quantities and methods recommended by the manufacturer of the coating for underground service. Backfill around the tanks as recommended by the tank manufacturer. Backfill material shall be pea gravel identical to the bed material. Do not place fluid in tanks until back filling is complete, piping connections to tanks are complete, and tanks have been inspected by the Engineer. Keep tank excavation dewatered

5.	Monitoring System: Factory mounted leak monitoring system for the fuel oil system shall monitor both the inner and outer walls of tank and shall be complete with reservoir sensors, and fuel oil tank information panel systems. Panel shall be provided with audio-visual alarms (warning bells and panel lights) indicating a breach in the outer and inner walls of the tank any liquid leakage, power source disconnect and reconnect, detect any oil present in the monitored space, and any additional devices recommended by the tank manufacturer. Also provide a dig-i-tal indication of the actual tank content in gallons complete with gauging sensors. Panel shall be factory prewired, UL listed, conform to NEMA enclosures and supplied by the tank manufacturer

TANK

NOTE: USE 60 GALLON DAY TANK UNLESS SIZE OF ENGINE DICTATES USE OF LARGER 250 GALLON DAY TANK. COORDINATE WITH ELECTRICAL DEPARTMENT

DAY

E.	Cylindrical type day tank shall be minimum 24 inches diameter by 30 inches long, 60 gallon capacity. Tank construction shall be minimum 1/8 inch thick steel with dished heads and pipe connections as noted

F.	Oblong type day tank shall be minimum 26 inches x 42 inches by 66 inches long, with 275 gallon capacity. Construction shall be minimum 1/8 inch thick steel. Tank pipe connections as noted, and pipe legs and baseplates

DAY

NOTE: COLLECTING PANS UNDER DAY TANKS ARE REQUIRED WHEN ENGINE AND DAY TANKS ARE LOCATED IN UPPER STORIES OF BUILDING

G.	Collecting pan shall be 12 inches high, extending 6 inches beyond all sides of day tank. Pan construction shall be 1/8 inch steel plate welded with factory applied prime coat with pipe connections as noted, dunnage beams and pipe legs

NOTE: LUBRICATING OIL FOR ENGINES IS GENERALLY STORED IN 50 GALLON DRUMS. ON LARGER ENGINE INSTALLATION, A LARGER STORAGE TANK MAY BE USED. INCLUDE LUBRICATING OIL PUMP

H.	Cylindrical type lubricating oil storage tank with capacity as noted shall be minimum 1/4 inch thick steel construction with 24 inches diameter manhole, lifting lugs, pipe connections and 18 inches inside ladder. Thoroughly wire-brush and clean inside and outside and paint outside of tank with 2 coats of bitumastic paint consisting of 1 coat primer and 1 coat enamel

NOTE: USE GEAR TYPE FOR 20 FT. AVERAGE SUCTION HEAD. FOR HIGHER HEADS, USE SCREW-TYPE

4)	DIESEL FUEL AND LUBRICATING OIL TRANSFER PUMPS

GEAR

A.	Pumps shall be duplex rotary gear type with motors. Pump and motor shall be mounted on cast-iron base (full length of motor and pump) with raised lip: Similar to Kraissl Class 60.

NOTE: COORDINATE WITH ELECTRICAL DEPARTMENT.

B.	Pump shall be duplex, direct-driven, rotary screw type with and motors. Pump and motor shall be mounted on cast-iron base (full length of motor and pump) with raised lip, similar to DeLaval IMO Series 3D

GEAR

C.	Oil hand pump shall be of minimum 30 gpm capacity at not more than 50 double strokes per minute. Pump shall be multiple-acting oscillating force type, with stainless steel shaft, brass oscillating wing and valves, bronze shell and lid and similar to Crane Deming Fig. 1570, size No. 6

NOTE: COORDINATE WITH ELECTRICAL DEPARTMENT.

5)	CONTROLS, ALARMS AND OIL TANK GAUGES

A.	For day tank provide level controls and alarm actuators including level indicator, Level control to operate fuel-oil transfer pump on and off similar to McDonnell No. 80. High and low-level alarm actuators, similar to McDonnell No. 80

NOTE: COORDINATE WITH ELECTRICAL DEPARTMENT.

B.	For collecting pan provide pump cutoff and alarm including diesel fuel-oil transfer pump cutoff. High-level alarm actuators, similar to McDonnell No. 80

C.	Gauges for oil tank: Gauges for diesel fuel-oil storage tank shall be similar to Hersey Remote Reading Hydraulic Gauge, Senior Model. Gauges for day tank shall be similar to Hersey Vertical Direct Reader. Gauges for lubricating oil storage tank shall be similar to Hersey Remote Reading Hydraulic Gauge, Industrial Junior Model

6)	OPERATION

A.	Day tank level control and alarm: Double-throw selector switch for active pump selection. Level controls shall automatically start oil transfer pump at low level and stop at high-level settings to maintain oil supply in day tank. Alarm actuators shall sound alarm when oil level in tank falls below low-level pump cut-in setting or rises above high-level pump cutout setting

B.	Collecting pan pump cutoff and alarm: High-level pump cutoff and alarm automatically stops oil transfer pumps and sounds alarm when oil reaches high-level setting in collecting pan

NOTE: COORDINATE WITH ELECTRICAL DEPARTMENT. WIRING UNDER ELECTRICAL WORK

C.	Jacket water temperature control shall be as follows:

1.	Jacket water circulating pumps shall be interlocked to operate with diesel engine and radiator fan shall be interlocked to operate with jacket water circulating pump. Thermostat in discharge line from radiator shall control in sequence, radiator fan and electric motor operated automatic dampers to maintain adjustable jacket water supply temperature

2.	Sequence of operation: As water temperature rises, shutters on radiator open to mininum position and start fan. On further rise, shutters shall modulate to full open position. As water temperature drops, control sequence reverses. Time-delay relay with PE switches operates to limit cycling of fan motor to maximum of 6 cycles per hour

D.	Air compressor control and alarm: Pressure switch starts compressor when pressure in storage tank drops to 225 psig and stops compressor when pressure rises to 250 psig. High and low-pressure alarm actuators sound alarm when air pressure drops to 220 psig or rises to 260 psig

NOTE: USE WHEN ENGINE WATER COOLING RADIATORS ARE NOT AN INTEGRAL PART OF ENGINE. FOR HIGH-RISE PROJECTS, CHECK ALLOWABLE PRESSURES ON ENGINE JACKETS. HEAT EXCHANGERS ARE SOMETIMES NECESSARY

7)	JACKET WATER COOLING SYSTEM

A.	Radiators shall be vertical or horizontal fan type and automatic shutters as noted

1.	Frame and supports, including formed steel channel side members, steel side and center supports for cores and supporting base extension for motor mounting, heavy, formed steel channels

2.	Core: Cooling coils shall be nonferrous plate-type fins, fusion-bonded to copper alloy tubes and reinforced, nonferrous headers, factory-tested at 100 psig hydrostatic pressure. Individual core sections removable. Capacity shall be based on ethylene glycol solution (50 percent by weight) with air to radiator at 95 deg F

3.	Fan having minimum capacity as noted shall have airfoil blades with adjustable pitch and motor

4.	Fan and core guard screens shall be galvanized, 1/8 inch or heavier, square mesh wire with guards readily removable for servicing

5.	Surge tank shall be provided with water-level gauge.

B.	Entire assembly designed to withstand winds up to 50 mph velocity and similar to Young Radiator Co

C.	Circulating pump shall be single-stage centrifugal type with flexible motor coupling, enclosed nonoverloading bronze impeller, motor pump and motor assembly mounted on cast-iron or rolled-steel baseplate with raised lip rim and drain tappings. Mechanical seals shall be single, inside-mounted, end face rubber bellows type with stainless steel springs, brass or stainless steel seal heads, babbitt-filled carbon rotating washer and tungsten carbide stationary seat. Seal glands shall be bronze or stainless steel with water flush design to provide flush across face of mechanical seal. Coordinate construction and type or mechanical with water treatment. For flushing seal provide bypass line from pump discharge to abrasive separator. Abrasive separator shall be Type 316 stainless steel similar to John Crane. Clean discharge shall go to seal face and abrasive fluid shall go to pump suction. Mechanical seals shall be similar to John Crane Type 1 or 1B

D.	Pump and motor capacity shall be minimum as noted with motor to operate over entire head capacity range of pump without exceeding horsepower rating

E.	Pump characteristics: Pump curve shall rise continuously from maximum capacity to shutoff and shutoff head shall be approximately 10 percent greater than design head. Operation shall be at or near peak efficiency and capable of operating at 25 percent beyond design capacity without exceeding breakoff point. Impeller diameter shall be maximum 90 percent difference between maximum and minimum of published impeller diameters

F.	Alignment shall be by pump manufacturer, at start-up, with dial indicator of plus or minus 0.002 inch accuracy. Certify in writing that alignment work has been performed by manufacturer's personnel and that pumps are operating in accordance with design requirements. Pumps shall be tested and designed to withstand 1-1/2 times specified working pressure

G.	Horizontal split case type:

PUMP

1.	Pump and flanges shall be 125 psig working pressure.

2.	Pump and flanges shall be 250 psig working pressure.

a.	Shaft shall be 11-13 percent chrome stainless steel. Renewable shaft sleeves shall be 17 percent chrome stainless steel, heat treated and hardened or ceramic-coated stainless steel with minimum hardness 600 Brinell. Trim, shaft nut and stuffing box bushing shall be bronze. Casing and impeller wearing rings shall be renewable, dissimilar bronze of hardness to insure maximum protection against galling

PUMP

b.	Suction and discharge connection shall be flanged. Ball bearings shall be grease-lubricated in moisture and dustproof housings with 80,000 hours rated life. Cartridge bearings which cannot be lubricated are not acceptable. Bearing brackets with overflow holes shall prevent flooding. Bearing housings shall be bolted and dowelled to bearing brackets

c.	Flexible couplings, self-aligning, all-metal type, similar to Waldron, Falk, Thomas or Fast. Provide removable sheet metal coupling guard.

d.	Pumps shall be similar to Buffalo Type SL.

H.	Vertical split case type:

PUMP

1.	Pump and flanges shall be 125 psig working pressure.

2.	Pump and flanges shall be 250 psig working pressure.

PUMP

3.	Shaft shall be 11-13 percent stainless steel.

4.	Bronze trim, renewable bronze wearing rings and renewable and hardened or ceramic-coated stainless steel shaft sleeves with minimum hardness: 500 Brinell.

5.	Ball bearings shall be grease-lubricated suitable for in-service lubrication.

6.	Pumps shall be similar to Buffalo Type C.

8)	COMPRESSED AIR STARTING SYSTEM

A.	Air-cooled compressor shall be with replaceable finned cast iron cylinders, finned cast iron or cast aluminum cylinder heads, cast iron or cast aluminum pistons, forged steel or aluminum connecting rods, Timken roller bearings, enclosed cast iron crank case with positive splash lubrication, flywheel cooling fan, V-belt drive and motor. Compressor and motor shall be mounted on steel channel base. Provide guards for flywheel and belts. Capacity shall be as noted. Compressors shall be similar to Worthington Corp. No. 3E2

B.	Intake filter-silencer shall be oil wetted type, with cleanable filtering element, acoustical silencing chamber and weather hood. Capacity shall be equal to air compressor capacity. Silencer shall be similar to Air-Maze Multimaze

C.	Pressure regulating valves shall be threaded bronze body, nut adjustable, direct acting, single seat, spring actuated, diaphragm type with orifice sized to maintain ----- psig constant outlet pressure. Valves shall be similar to Foster Type UI Series

D.	Vertical type compressed air storage tanks shall be with ring base, pressure gauges, and drain valve, 6 inch diameter handhole pipe connections and semisteel bronze trim safety valves. Safety valve shall be sized in conformance with ASME code for unfired pressure vessels. Tank capacity shall be as noted. Tanks shall be designed in accordance with ASME Code for Unfired Pressure Vessels for 275 psig working pressure and shall bear ASME stamp. Outside of tank shall be wire brushed and painted with coat of zinc chromate primer

Part 3 -	EXECUTION

1)	INSTALLATION

NOTE: UNDERGROUND STEEL PIPING AND STEEL TANKS MAY REQUIRE TO BE CATHODICALLY PROTECT. [CHECK LOCAL AND FEDERAL CODES FOR USE OF FIBERGLASS REINFORCED PLASTIC PIPING OR OTHER APPROVED NON-CORRODIBLE MATERIAL

A.	Fill lines shall terminate in fill box, as noted and test well lines shall terminate in similar box

NOTE: BOX IS NOT REQUIRED UNLESS FILL BOX OR TEST WELL IS LOCATED WHERE SUBJECT TO HEAVY TRAFFIC, SUCH AS DRIVEWAYS, PARKING AREAS, ETC

1.	Install boxes in waterproof cast-iron street box, similar to Preferred Utilities Type 126A

NOTE: FOR INSTALLATIONS HAVING OIL STORAGE TANKS LOCATED ABOVE LOWEST LEVEL. CHECK LOCAL CODES FOR REQUIREMENT

B.	Diesel oil fill:

1.	Provide pipe within pipe with spaces to maintain proper pipe alignment and support

2.	spaces located to as not to reduce required flow.

C.	Provide vent terminals on vent lines for diesel fuel-oil storage tank, day tank and lubricating oil storage tank

D.	Provide Antisyphon valves at high points of suction lines from oil tanks. Provide bronze valves with dash pot, similar to Preferred Utilities

E.	Provide relief valves at discharge of oil pumps with outlets piped back to respective storage tanks

F.	Paint underground black steel piping with 2 heavy coats of asphaltum paint

G.	Engine exhaust and crankcase vent piping shall be supported by spring-type hangers. Pitch to drain condensation and provide float traps at low points and at silencer. Mount silencer with spring-type hangers and provide piping connections including condensation piping from silencer and low points extended to spill over nearest floor drain

NOTE: USE FOR MULTIPLE ENGINES CONNECTED TO COMMON EXHAUST.

H.	Provide automatic exhaust dampers in exhaust pipe connection from each diesel engine as noted. Provide non-asbestos gaskets for flanged joints. Automatic dampers shall be arranged to open when respective engine starts, close when engine stops

I.	Provide flexible type final connections for diesel engine, air cooled radiator and air compressor

J.	Underground fuel-oil tanks:

NOTE: DO NOT SPECIFY CRADLES FOR FIBERGLASS TANKS.

NOTE: STEEL TANK.

CON

1.	Install on concrete mat and cradles.

NOTE: FIBERGLASS TANK.

2.	Install on concrete mat and pea gravel backfill bed.

CON

K.	Tank supports: Concrete will be provided under Section General Construction Work. Coordinate locations of supports and anchor bolts. Concrete will be as specified under Section General Construction Work.

FUEL

1.	Install fuel oil storage tank on concrete mat and cradles and provide tie down straps and turnbuckles. Provide concrete enclosure for tank manholes reinforced with 3/8 inch diameter rods, 6 inches on center vertically and horizontally, wired in place and of a size as indicated. Provide approved-type ladder within each enclosure as indicated. Provide 36 inches square light frame and hinged cover, similar to Flockhart Foundry Co., Type 678-H

2.	Rectangular fuel oil storage tanks:

BEAM

a.	Install on dunnage beams.

b.	Install on concrete piers and provide tie-down straps and turnbuckles

BEAM

3.	Install cylindrical, fiberglass oil storage tanks on concrete pad and 12 inches pea gravel backfill bed in accordance with NFPA 30 and 31, and latest instructions of the manufacturer. Number and location of hold-down straps shall be as recommended by manufacturer. Provide pea gravel backfill to grade. Provide enclosure for tank manhole with a size as indicated and install in accordance with manufacturers' approved detail. Provide 36 inches diameter manhole frame and cover at grade

FUEL

4.	Provide day tank floor-mounted on pipe legs and baseplates. Provide collecting pans under each day-tank

FORM

a.	Pans to rest on dunnage beams.

b.	Pans shall be supported on pipe legs with baseplates

FORM

5.	Install lubricating oil storage tank on concrete saddles with maximum 4 ft on centers. Provide tie-down straps and turnbuckles

L.	Pumps: Provide line size basket type strainer at motor-driven pump suction inlets. Diesel oil transfer pumps shall be arranged so that selected active pump starts and stops automatically in response to level controller on day tank. Hand oil pump shall be installed in parallel with motor-driven pump

M.	Tank gauges shall be connected to each tank. Run gauge lines in galvanized steel pipes and mount gauges on panel located in Emergency Generator Room

N.	Compressed air starting system: For drains, provide 3/8 inch brass petcock at low points in compressed air piping. Provide pressure gauges on storage tank and where noted. Provide relief valves after each pressure-reducing valve with capacity equal to that of reducing valve. Provide pressure regulating valve assemblies at outlet of compressed air storage tank and provide 3 valve by-pass around pressure regulating valve

2)	FIELD QUALITY CONTROL

A.	Tests: Tanks shall be pressure tested in conformance with local ordinances and manufacturers recommendations. Pumps, level controls and alarms shall be operational tested. Assist in performing operational test of entire emergency power system