231000 FACILITY FUEL SYSTEMS seismic.pdf

UPGRADE EMERGENCY POWER IN BUILDING 138

VAMC, MARION, IN PROJECT: 610-16-104

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SECTION 23 10 00

FACILITY FUEL OIL SYSTEMS

PART 1 - GENERAL

1.1 DESCRIPTION

A. Diesel fuel oil tanks, piping, and accessories loca ted outside or aboveground as shown on contract drawings. Refer to contract drawings for type of fuel and for tank capacities.

B. Tank fluid level monitoring and alarm systems.

C. Leak detection system for tanks and underground pip ing.

D. Fuel oil quality maintenance system (water and part iculate removal).

E. A complete listing of common acronyms and abbreviat ions are included in

Section 23 05 11, COMMON WORK RESULTS FOR HVAC.

1.2 RELATED WORK

A. Section 01 00 00, GENERAL REQUIREMENTS.

B. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

C. Section 03 30 00, CAST-IN-PLACE CONCRETE.

D. Section 05 50 00, METAL FABRICATIONS.

E. Section 09 91 00, PAINTING.

F. Section 13 05 41, SEISMIC RESTRAINT REQUIREMENTS FO R NON-STRUCTURAL

COMPONENTS.

G. Section 23 05 11, COMMON WORK RESULTS FOR HVAC.

H. Section 23 07 11, HVAC AND BOILER PLANT INSULATI ON.

1.3 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this s pecification to the extent referenced. The publications are referenced in the text by the basic designation only. Where conflicts occur these specifications and the VHA standard will govern.

B. American Society of Mechanical Engineers (ASME):

B16.5-2017..............Pipe Flanges and Flanged Fi ttings: NPS 1/2 through NPS 24 Metric/Inch Standard.

B16.9-2018..............Factory Made Wrought Buttwe lding Fittings

B16.11-2016.............Forged Fittings, Socket-Wel ding and Threaded

B31.1-2018..............Power Piping

C. American Society for Testing and Materials (ASTM):

A36/A36M-2017...........Standard Specification for Carbon Structural

Steel

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A53/A53M-2018...........Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and

Seamless

A105/A105M-2014.........Standard Specification for Carbon Steel

Forgings for Piping Applications

A106/A106M-2015.........Standard Specification for Seamless Carbon

Steel Pipe for High-Temperature Service

A126-04(R2019)..........Standard Specification for Gray Iron Castings for Valves, Flanges, and Pipe Fittings

A234/A234M-2015.........Standard Specification for Piping Fittings of

Wrought Carbon Steel and Alloy Steel for

Moderate and High Temperature Service

B62-2017................Standard Specification for Composition Bronze or Ounce Metal Castings

D. Federal Specifications (Fed. Spec.):

A-A-60005-1998..........Frames, Covers, Grating, St eps, Sump and Catch

Basin, Manhole

E. NACE International (NACE):

3/SSPC–SP62013..........Commercial Blast Cleaning

4/SSPC-SP72006..........Brush-off Blast Cleaning

F. National Electrical Manufacturers Association (NEMA ):

250-2014................Enclosures for Electrical E quipment (1000 Volts

Maximum)

G. National Fire Protection Association (NFPA):

30-2018.................Flammable and Combustible L iquids Code

31-2019.................Standard for the Installati on of Oil-Burning

Equipment

70-2017.................National Electrical Code (N EC)

H. Steel Tank Institute (STI):

F001-2017...............Flameshield® Standard for F ire Tested Tanks

I. Underwriters Laboratories Inc. (UL):

142-2019................Standard for Steel Abovegro und Tanks for

Flammable and Combustible Liquids

1.4 SUBMITTALS

A. Submittals, including number of required copies, sh all be submitted in accordance with Section 01 33 23, SHOP DRAWINGS, PR ODUCT DATA, AND

SAMPLES.

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B. Information and material submitted under this secti on shall be marked

“SUBMITTED UNDER SECTION 23 10 00, FACILITY FUEL OI L SYSTEMS”, with applicable paragraph identification.

C. Manufacturer's Literature and Data including: Full item description and optional features and accessories. Include dimensio ns, weights, materials, applications, standard compliance, model numbers, size, and capacity.

D. Aboveground Steel Tanks:

1. Drawings of tanks, supports, ladders, platforms, he ating coils, tank manholes, emergency relief vents and all accessorie s. Include overall dimensions and dimensional locations and si zes of pipe connections, and access openings.

2. Recommended tank support locations.

3. Weight of entire tank assembly, empty and flooded.

4. Design and construction of primary tanks, insulatio n, secondary containment, supports, pipe connections, platforms.

5. Application and performance data on coatings from m anufacturer of coatings.

6. Data certifying tanks are designed for surcharge lo ads of platforms shown.

7. Certification of compliance with specified standard s.

8. Certification that steel tank manufacturer particip ates in Steel

Tank Institute (STI) Quality Assurance Program.

9. Design, construction, performance, dimensions of em ergency relief vents.

10. Seismic Data: Refer to Section 13 05 41, SEISMIC RE STRAINT

REQUIREMENTS FOR NON-STRUCTURAL COMPONENTS.

E. Fuel Piping:

1. ASTM and UL compliance.

2. Grade, class or type, schedule number.

3. Manufacturer.

F. Pipe Fittings, Unions, Flanges:

1. ASTM and UL compliance.

2. ASTM standards number.

3. Catalog cuts.

4. Pressure and temperature rating.

G. Foot Valves, Solenoid Valves, Check Valves, Overfil l Prevention Valves:

1. Catalog cuts showing design and construction.

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2. Pressure and temperature ratings.

3. Pressure loss and flow rate data.

4. Materials of construction.

5. Accessories.

H. Leak Detection System:

1. Drawings, description and performance data on senso rs, control units.

2. Description of operation.

3. Layout of system.

4. Installation and operating instructions.

5. Data on interconnecting wiring systems to be furnis hed.

I. Tank Fluid Level Monitoring Instrumentation System:

1. Drawings showing instruments and in-tank sensing un its, with dimensions.

2. Design and construction of all elements of system.

3. Installation instructions.

J. Tank and Piping Accessories: Design, construction, and dimensions of vent caps, fill boxes, fill caps, spill containers and other accessories.

K. Fuel Quality Maintenance System:

1. Drawings and description of all components and arra ngement of system.

2. Design and performance of pumps, filters.

3. Catalog data and operation of control system.

4. Installation instructions.

L. Complete operating and maintenance manuals includin g wiring diagrams, technical data sheets, information for ordering rep lacement parts, and troubleshooting guide:

1. Include complete list indicating all components of the systems.

2. Include complete diagrams of the internal wiring fo r each item of equipment.

3. Diagrams shall have their terminals identified to f acilitate installation, operation and maintenance.

1.5 QUALITY ASSURANCE

A. Approval by Contracting Officer is required of prod ucts or services of proposed manufacturers, suppliers and installers, a nd will be based on

Contractor’s certification that:

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1. Manufacturers regularly and currently manufacture t anks, tank and piping accessories, tank fluid level monitoring and leak detection systems, and fuel quality management systems.

2. Manufacturers of steel tanks participate in the Qua lity Assurance

Program of the Steel Tank Institute (STI).

3. The design and size of each item of equipment provi ded for this project is of current production and has been in sa tisfactory operation on at least three installations for appro ximately three years. Current models of fluid level and leak detec tion systems with less than three years’ service experience are accep table if similar previous models from the same manufacturer have at least three years’ service experience.

B. Apply and install materials, equipment and specialt ies in accordance with manufacturer’s written instructions. Conflicts between the manufacturer’s instructions and the contract drawin gs and specifications shall be referred to the COR for res olution. Provide copies of installation instructions to the COR two weeks prior to commencing installation of any item.

C. All equipment shall be free from defects that would adversely affect the performance, maintainability and appearance of individual components or overall assembly.

D. Tanks, Tank Level Monitoring Systems, Leak Detectio n Systems, Fuel

Quality Management Systems: Authorized manufacturer ’s representatives shall provide onsite training of installers and sup ervision of the installation and testing of the equipment and syste ms to assure conformance to written instructions of manufacturer s.

E. Tank and piping installation contractor shall be ce rtified as acceptable by local and state pollution control aut horities.

F. Entire installation shall conform to requirements o f local and state pollution control authorities.

G. Pipe Welding: Conform to requirements of ASME B31.1 . Welders shall show evidence of qualification. Welders shall utilize a stamp to identify their work. Unqualified personnel will be rejected.

H. Assembly of Glass Fiber Reinforced Plastic Piping: Installation personnel shall have been trained, tested and certi fied under a procedure approved by the manufacturer of the pipin g. Proof of certification, in writing, shall be provided to the COR.

I. Where specified codes or standards conflict, consul t the COR.

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J. Label of Conformance (definition): Labels of accred ited testing laboratories showing conformance to the standards s pecified.

K. Equipment and materials installed shall be compatib le in all respects with other items being furnished and with existing items so that the result will be a safe, complete and fully operation al system which conforms to contract requirements and in which no i tem is subject to conditions beyond its design capabilities.

1.6 AS-BUILT DOCUMENTATION

A. Submit manufacturer’s literature and data updated t o include submittal review comments and any equipment substitutions.

B. Submit operation and maintenance data updated to in clude submittal review comments, VA approved substitutions and cons truction revisions shall be in electronic version on CD or DVD and ins erted into a three-ring binder. All aspects of system operation and ma intenance procedures, including applicable piping isometrics, wiring diagrams of all circuits, a written description of system desig n, control logic, and sequence of operation shall be included in the operation and maintenance manual. The operations and maintenance manual shall include troubleshooting techniques and procedures for emerg ency situations.

Notes on all special systems or devices shall be in cluded. A List of recommended spare parts (manufacturer, model number , and quantity) shall be furnished. Information explaining any spec ial knowledge or tools the owner will be required to employ shall be inserted into the

As-Built documentation.

C. The installing contractor shall maintain as-built d rawings of each completed phase for verification; and, shall provid e the complete set at the time of final systems certification testing. Should the installing contractor engage the testing company to provide as-built or any portion thereof, it shall not be deemed a confl ict of interest or breach of the ‘third party testing company’ require ment. Provide record drawings as follows:

1. Red-lined, hand-marked drawings shall be provided, with one paper copy and a scanned PDF version of the hand-marked d rawings provided on CD or DVD.

D. The as-built drawings shall indicate the location a nd type of all lockout/tagout points for all energy sources for al l equipment and pumps to include breaker location and numbers, valv e tag numbers, etc.

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Coordinate lockout/tagout procedures and practices with local VA requirements.

E. Certification documentation shall be provided to CO R 21 working days prior to submitting the request for final inspectio n. The documentation shall include all test results, the names of indivi duals performing work for the testing agency on this project, detail ed procedures followed for all tests, and provide documentation/c ertification that all results of tests were within limits specified. Test results shall contain written sequence of test procedure with wri tten test results annotated at each step along with the expected outc ome or setpoint. The results shall include all readings, including but n ot limited to data on device (make, model and performance characterist ics), normal pressures, switch ranges, trip points, amp readings , and calibration data to include equipment serial numbers or individ ual identifications, etc.

1.7 PERMITS

A. Contractor shall obtain and complete all tank permi t and registration forms required by governmental authorities.

PART 2 - PRODUCTS

2.1 ABOVEGROUND STEEL TANKS

A. Type: Factory-fabricated all welded steel, horizont al cylindrical configuration, atmospheric pressure, internal and e xternal corrosion protection as specified. In addition to specified r equirements, tanks shall be fabricated in accordance with Steel Tank I nstitute (STI) design standards by manufacturer that participates in STI Quality

Assurance Program.

B. Construction:

1. ASTM A36/A36M steel, conform to UL 142. Inner and o uter tanks of double wall tanks shall both conform. Provide label of conformance.

2. Conform to NFPA 30 or NFPA 31 as applicable.

3. Double-wall, un-insulated, conforming to STI F001 “ Flameshield” construction. Provide label of conformance.

4. Design for surcharge load produced by tank-mounted platforms and platform loadings shown. Design tanks for saddle su pports furnished by tank manufacturer.

5. Leaks and abrasions are prohibited. Maximum permiss ible out-of-roundness of cylindrical shells is one perce nt of the diameter.

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6. Provide lifting lugs for rigging tanks.

7. Make provisions for leak detectors to be installed at lowest part of interstitial space between walls of double-wall tan ks.

C. Platforms, Stairs, Ladders and Handrails: Provide w elded steel assemblies as shown, conforming to OSHA requirement s. Provide welded steel tank attachments designed to support platform framing, stairs, and live and dead loadings. Clean and coat all surf aces as specified for tank exterior. Galvanizing is an acceptable alt ernative.

D. Factory Cleaning: Clean interior and exterior of ta nks. Remove mill scale, dirt, rust, oil, welding debris, loose coati ngs and coatings incompatible with fuel stored or protective coating . Sandblast exterior in accordance with NACE 3.

E. Factory Coating: Provide tanks and steel dikes (if furnished) with exterior coat of rust resistant metal primer, speci fied under Section

09 91 00, PAINTING. Coat interior from bottom of ta nk to 1 m (3 feet) above bottom in compliance with API RP 1631.

F. Field Painting: Clean and coat all surfaces as spec ified in Section 09

91 00, PAINTING.

G. Pipe Connections to Tanks:

1. Conform to UL 142.

2. Pipe sizes 50 mm (2 inches) and smaller, threaded. Pipe sizes 65 mm

(2-1/2 inches) and larger, flanged, 1034 kPa (150 p sig) ASME rating.

3. Welded joints required on steel piping located insi de tanks.

4. Provide and coordinate tank connection quantities, sizes and types with requirements of tank level gauge unit; soundin g rod; vent, fill, supply and return pipes; and other pipes as s hown.

5. On double-wall tanks, provide valved drain of inter stitial space.

H. Tank Manholes: Provide quantity shown. Bolted cover type, gasketed.

I. Internal Ladder: Provide as shown with 50 mm x 6 mm (2 inch x 1/4 inch) sides and 20 mm (3/4 inch) diameter rungs at 300 mm (12 inches) on center. Provide slide supports to allow for tank mo vement.

J. Wear (Striker) Plates: Provide 300 mm (12 inch) squ are, 6 mm (1/4 inch) thick steel plates welded to tank bottom directly u nder the sounding opening, the fuel return discharge, and the fill di scharge.

K. Lifting Lugs: Provide for rigging tanks.

L. Emergency Relief Vents for Fire Exposure: Venting c apacity shall conform to NFPA 30 or NFPA 31 as applicable. Standa rd product of a manufacturer, designed to automatically open at tan k pressure of 17 kPa

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(2.5 psig) gauge. Aluminum or cast-iron constructio n with Teflon seating surface. Provide separate vents for primary and secondary tanks.

M. Provide fittings for grounding per NFPA 70.

N. Seismic Design: Refer to Section 13 05 41, SEISMIC RESTRAINT

REQUIREMENTS FOR NON-STRUCTURAL COMPONENTS.

2.2 SOIL SEPARATOR MAT

A. Material: Porous, non-woven polypropylene geotextil e, Weight: 135 g per

sq. meter (4 ounces per square yard), resistant to all alkalies and weak acids.

2.3 TANK AND PIPING ACCESSORIES

A. Vent Caps: Galvanized cast iron or cast aluminum wi th brass or bronze screens, arranged to permit full venting and to pre vent entry of foreign material into the vent line. Same pipe size as vent pipe.

B. Fill Boxes:

1. Spill-container type enclosing a fill cap assembly with 3” camlock dry-disconnect hose connector with closure coordina ted with fittings used by fuel supplier.

2. Weather-tight vented enclosure with minimum 15 gall on capacity.

Construction is 12 gauge steel with powder coat fin ish. Integral drain valve with discharge to fill pipe. Lockable l id.

3. Provide special tools necessary.

C. Refer to Section 05 50 00, METAL FABRICATIONS, for access platforms shown for aboveground tanks. Access platforms shall be provided by the tank manufacturer as shown on drawing.

D. Support horizontal portion of pipes located inside tank every 2100 mm

(7 feet) maximum.

E. Furnish gauging chart, liters versus mm and gallons versus inches depth.

F. Furnish sounding rod for each tank size. Mark rods in increments representing five percent of tank capacity. Rods sh all be graduated in gallons.

G. Fill Point Identification:

1. Fill Caps above Grade: Aluminum, brass or bronze pl ate, clamped to fill pipe, with stamped or engraved letters 20 mm ( 3/4 inch) high.

2. Legend: ""DIESEL FUEL FILL” or "SOUNDING" as approp riate.

2.4 PIPING, VALVES, FITTINGS

A. Fuel supply and return, tank fill, vents, sounding, and pump out.

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B. Steel Pipe and Fittings:

1. Piping: Steel, seamless or electric resistance weld ed (ERW), ASTM

A53/A53M Grade B or ASTM A106/A106M Grade B, Schedu le 40.

Aboveground piping shall be painted. Refer to Secti on 09 91 00, PAINTING.

2. Joints: Socket or butt-welded. Threaded joints are prohibited except at valves, unions and tank connections.

3. Fittings:

a. Butt-welded joints: Steel, ASTM A234/A234M, Grade B , ASME B16.9, same schedule as adjoining pipe.

b. Socket-welded joints: Forged steel, ASME B16.11, 13 ,790 kPa (2000 psig) class.

4. Unions: Malleable iron, 2070 kPa (300 psig) class.

5. Companion flanges: Flanges and bolting, ASME B16.5.

6. Welding flanges: Weld neck, ASME B16.5, forged stee l ASTM

A105/A105M, 1034 kPa (150 psig).

C. Check Valves - Fuel Pump Suction.

1. Pipe Sizes 50 mm (2 inches) and under: Rated for 13 75 kPa (200 psig) water-oil-gas, swing-type, threaded ends, ASTM B62 bronze body.

Provide union adjacent to valve.

2. Pipe Sizes 65 mm (2-1/2 inches) and above: Rated fo r 1380 kPa (200 psig) water-oil-gas, swing-type, 861 kPa (125 pound s) ASME flanged ends, ASTM A126 class B cast iron body.

D. Foot Valves - Fuel Pump Suction: Double poppet, lap ped-in metal-to-metal seats, double-guided stems, 20 mesh inlet scr een, same size as fuel suction piping. Foot valve shall be removable to above grade through the tank manhole enclosure or through extra ctor fitting.

E. Extractor Fittings: Arranged to permit removal of f oot valves, overfill prevention valves, and other devices that are locat ed below grade.

Access point shall be through a cast iron fill box- type manhole located at grade. Provide extractor wrench.

F. Overfill Prevention Valve: Aluminum automatic valve designed for aboveground tanks. Locate valve near the top of the tank in the fill pipe. On aboveground tanks, or tanks pressure-fille d, provide single stage valve, rated for fill flow and pressure, whic h stops flow completely at 95 percent of tank capacity. Valve sh all include method for draining oil trapped above the valve into the t ank.

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2.5 LEAK DETECTION SYSTEMS

A. Automatic digital continuous monitoring systems res ponsive to the presence of water and hydrocarbons in the interstit ial space of the double-wall tanks and in fuel piping systems. Syste m shall distinguish between hydrocarbon and water and identify location of leak as to individual tank and piping system. System may be co mbined with tank fluid level monitor and alarm system specified in p aragraph, TANK FLUID

LEVEL MONITOR AND ALARM SYSTEM.

B. Functions and Arrangement:

1. Single control station to monitor all sensing probe s.

2. Visual indicator to monitor and identify leaks as w ater or hydrocarbon and location.

3. Indicators showing system status including faults a nd alarms.

4. On board printer that provides complete reports of all system functions upon command.

5. Panel circuit test button.

6. 95 dB audible alarm with silencing control to sound when leak is detected.

7. Eight-hour memory backup system with battery.

8. NEMA 250 Type 4 cabinet.

9. UL or other accredited testing laboratory listing.

10. BACnet communications with engineering control syst em to indicate system in service and alarm conditions.

C. Sensors:

1. Designed for required locations including: Insertio n between walls of double-wall tanks. Sensing points shall be at lo west point of each tank. Intrinsically safe design.

2. Sensing units shall detect presence of water and a minimum 3.2 mm

(1/8 inch) thick layer of hydrocarbon on surface of water and minimum 50 mm (2 inch) thickness of hydrocarbon in area that has no water present.

3. Sensors shall be arranged to allow replacement of i ndividual sensors without disturbing other portions of leak detection system or fuel storage and piping system.

4. Materials of construction shall be non-corroding.

5. Transmit status signal to control unit.

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D. Components:

1. Provide identification plates, similar to those spe cified for fill points, labeled “MONITORING/OBSERVATION WELL-DO NOT FILL”. Provide special tools if necessary for opening covers.

2.6 TANK FLUID LEVEL MONITOR AND ALARM SYSTEMS

A. Digital systems for central monitoring of fuel and water levels in all fuel oil storage tanks in the project. High and low level visual and audible alarms. Volumetric tank-tightness testing. Complete with all transducing, transmitting, and receiving devices. O n board printer to provide complete report of all system functions upo n command. System may be combined with leak detection system specifie d in paragraph, LEAK

DETECTION SYSTEMS.

B. Fluid Level Monitor:

1. Digital continuous readout, showing tank oil and wa ter levels in gallons, smallest reading one gallon. Provide ident ification of product measured, measuring units, and the tank num ber.

2. Tank and fuel characteristics contained in preprogr ammed non-volatile field-replaceable databases. Protected pow er supply.

C. High and Low Fluid Level Alarm System:

1. Automatic continuous on-line monitoring of all tank s.

2. Visual and audible indicators combined with fluid l evel monitor.

Identify the tank that is in alarm condition.

3. Manual alarm test and silencing controls.

4. Low level alarm actuation adjustable 0-25 percent o f tank capacity.

High level alarm actuation adjustable 75-100 percen t of tank capacity.

D. Locate all indicators, selector switches, alarms on face of wall-mounted NEMA 250, Type 4 panel.

E. Remote Alarm Annunciator:

1. Visual and audible high-level alarms adjacent to ta nk fill box locations. Locate in NEMA 250 Type 4X weatherproof exterior wall or pole-mounted panels.

2. Alarm shall include flashing red light with 180-deg ree visibility for each tank and 95 dB horn or 100 mm (4 inch) dia meter bell.

Provide alarm silence control.

3. Provide identification sign: "WHEN ALARM SOUNDS - F UEL TANK FILLED

TO CAPACITY - DO NOT OVERFILL".

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F. BACnet communication to engineering control system to indicate tank fluid level and alarm conditions.

G. System Performance: Accuracy plus or minus 2.5 mm ( 0.10 inch) of fluid height in inventory mode and 0.25 mm (0.01 inch) in leak detection mode. Automatic compensation for fluid temperature changes. Volumetric tank tightness sensitivity of 0.4 lph (0.1 gph).

H. Sensors:

1. Provide sensor types such as magnetostrictive, capa citance, float, hydrostatic and other types as necessary for the ap plications.

2. Apply in accordance with manufacturer’s instruction s with provisions for easy future replacement without need for excava tion.

3. Provide for each hydrostatic sensor a constant flow differential pressure regulator and transmitter protected from f uel contamination. Air supply shall include filter and over-pressure protection. Provide desiccant-type dryer on air sup ply designed for removal of water vapor. Dryer rating, minimum 4.6 L /s (10 SCFM).

Provide moisture indicator. Dryer may be deleted if air supply source has a refrigerated dryer.

4. Float-type units shall be designed for installation and removal through a 100 mm (4 inch) diameter vertical pipe mo unted in the top of the tank.

I. Underground Wiring and Piping: Enclose in water-tig ht corrosion-resistant conduit system sized and arranged as reco mmended by system manufacturer and conforming to Section 26 05 41, UN DERGROUND ELECTRICAL

CONSTRUCTION.

J. Code Conformance: NFPA 70.

2.7 FUEL OIL QUALITY MAINTENANCE SYSTEMS

A. Complete factory-assembled automatic particulate fi ltration and dewatering system to maintain the purity of No. 2 f uel oil in storage.

The system shall circulate the oil from the storage tank, through the system, and back to the storage tank. Provide quant ity and capacity of systems to serve tanks as shown. Digital controls.

B. Performance: Design for nearly 100 percent water re moval. Provide 2-micron particulate filtration. Each system shall ha ve capacity to turn over the largest connected full tank one time withi n 22 hours maximum.

System shall be designed to allow continuous operat ion with brief interruptions to manually change filters and clean strainers.

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C. Components:

1. Strainer: 100 mesh (or as recommended by manufactur er) perforated stainless steel basket. Clamped covers. 861 kPa (12 5 psig) design pressure.

2. Water Separation Unit: Two stage, designed to reduc e water content of fuel to less than 10 ppm. Centrifugal separator for removal of large droplets and renewable resin-impregnated cell ulose water coalescing elements. Water removed shall flow to wa ter holding sump in the unit. Water sensing probe to alert the opera tor when water level in bowl has reached capacity.

3. Filter: 2-micron filtration with 96 percent removal efficiency, valved manual drain. Replaceable elements.

4. Filtration Pump: Positive displacement base-mounted pump with cast iron or bronze housing, for circulating the oil fro m the storage tank, through the water separation and filter units and back to the storage tank. Pump shall have carbon bushings, stai nless steel shaft and Teflon mechanical seal, ODP motor (TEFC if ODP not offered by manufacturer).

5. Controls:

a. Digital PLC electronic controls for all system cont rol and alarm functions. Relay logic not acceptable.

b. Control panel with selector for modes of operation, indicators to show system status, and visual and audible alarms t o signal the need for operator intervention. Operator interface shall be 2 x

20 LCD and keypad.

c. Controls shall include:

1) Control power “on-off”.

2) “Cycle Start”.

3) “Cycle Cancel”.

4) “Hand-off-Auto” for filtration pump.

5) Pump cycle timer set function.

6) Cycle duration selector.

d. Indications shall include:

1) “Control Power On”.

2) “Pump Run”.

3) “Pump Failure”.

4) “Excess Water in Fuel”.

5) “Filter Water Level High”.

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6) “Rupture Basin Leak” alarm.

7) “High Pressure Drop in Strainer” alarm.

8) “High Pressure Drop in Filters” alarm.

9) “High Pressure” alarm and automatic shutdown.

e. Filter and strainer differential pressure gauges, d ifferential pressure switches and control. Provide indication w hen filters should be changed.

f. Over pressure switch and control to shut down pump if filter inlet pressure exceeds limits.

g. All primary wiring exiting the enclosure shall be e ncased in conduit.

h. Magnetic motor starters with overload protection.

i. Circuit breakers.

j. Control enclosure shall be NEMA 4, fully gasketed d oors with 3 point lockable latching. Interior shall have white gloss finish;

exterior shall be chemical-resistant gray enamel. A ll controls and indicating devices shall be mounted on front of enclosure and labeled with black Phenolic labels with white lette ring.

k. BACnet communication to engineering control system for alarms and system status.

D. Enclosure – Wall Mounted Units: 14-gauge steel, NEM A Type 4 enclosure, continuously welded, framed cabinet. Provide doors for complete access to all equipment. Doors shall have a turned edge, p iano hinges, three-point locking mechanisms. Corrosion-resistant prime and finish coatings on all interior and exterior surfaces.

E. Water Drainage System: Sealed bowl (bottle) with hi gh level alarm system. Water collected in filters shall drain to a sealed bowl that can be easily removed and emptied.

2.8 CONCRETE FOUNDATIONS

A. Concrete pads for aboveground tanks are specified u nder Section 03 30

00, CAST-IN-PLACE CONCRETE. Also see structural des ign documents for details.

PART 3 - EXECUTION

3.1 GENERAL

A. If an installation is unsatisfactory to the COR, th e Contractor shall correct the installation at no additional cost or t ime to the

Government.

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3.2 INSTALLATION AND TESTING, ABOVEGROUND TANKS

A. Conform to NFPA 30 or NFPA 31 as applicable.

B. Support tanks on steel saddles welded to the tanks. Anchor to concrete foundations. Provide molded neoprene isolation pads between the steel supports and the concrete foundation.

C. After tanks are installed, test steel tanks with ai r pressure of 21 kPa to 34 kPa (3 to 5 psig), using soapsuds to locate l eaks. Repair leaks by chipping to bare metal and rewelding. Retest unt il all leaks are repaired. Repair all damaged areas of prime coat on tanks and steel dikes (if furnished). Test interstitial area betwee n steel tank walls with air at pressure recommended by tank manufactur er. Tests shall be witnessed by the COR.

D. Surface finish coating for tanks and steel dikes (i f furnished) is specified under Section 09 91 00, PAINTING.

E. Provide electrical grounding in accordance with NFP A 70.

3.3 INSTALLATION AND TESTING, LEAK DETECTOR SYSTEMS FOR TANKS AND PIPING

A. Wiring shall conform to NFPA 70.

B. Locate control monitor panels 1500 mm (5 feet) abov e the floor on inside wall of boiler room, generator room or garag e, depending on type of fuel tank served, unless shown otherwise.

C. Test operation of each probe, and monitoring system with fuel and water. If type of probe utilized is damaged by expo sure to fuel, provide temporary probe for testing monitoring syst em.

3.4 INSTALLATION, TANK FLUID LEVEL INDICATOR AND ALARM SYSTEM

A. Wiring shall conform to NFPA 70.

B. Locate level indicator and alarm panel 1500 mm (5 f eet) above the floor on inside wall of boiler room, generator room or ga rage, depending on type of fuel tank served, unless shown otherwise.

C. Locate remote high-level alarm on exterior wall or pole in view of tank fill point, 2400 mm (8 feet) above grade.

3.5 INSTALLATION, FUEL OIL QUALITY MAINTENANCE SYSTEMS

A. Locate systems within easy reach of persons standin g on floor, with sufficient elevation to allow gravity flow of water from system to water storage tank sitting on the floor.

B. Connect to tank with isolation valves. Provide comp ound pressure gauges at suction and discharge piping connections.

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3.6 STARTUP AND TESTING

A. Perform tests as recommended by product manufacture r and listed standards and under actual or simulated operating c onditions and prove full compliance with design and specified requireme nts. Tests of the various items of equipment shall be performed simul taneously with the system of which each item is an integral part.

B. When any defects are detected, correct defects and repeat test at no additional cost or time to the Government.

3.7 DEMONSTRATION AND TRAINING

A. Provide services of manufacturer’s technical repres entative for 4 hours to instruct each VA personnel responsible in operat ion and maintenance of the system.

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