MPS Master
SECTION 23 13 13.23
GLASS FIBER-REINFORCED PLASTIC
UNDERGROUND FUEL-OIL STORAGE TANKS
PART - GENERAL
SUMMARY
Section Includes: Include labor, materials, equipment, and accessories necessary to furnish and install double wall fiberglass fuel oil storage tanks, controls, and piping and make connections to oil burning equipment. Tank and pipe sizes shall be as shown on Drawings and specified.
SUBMITTALS
Shop Drawings: Submit a portfolio showing fuel oil storage tanks, openings, dimensions, and related gauges, piping, and leak detection systems.
QUALITY ASSURANCE
Regulatory Requirements:
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MPS Master
SECTION 23 13 13.23
State Building Code
National Electric Code
Plumbing Code
Local Codes and Ordinances
PART - PRODUCTS
MANUFACTURERS
Acceptable Manufacturers for Double Wall Fiberglass Underground Fuel Oil Tanks: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows:
Fluid Containment, Inc.
Xerxes
Acceptable Manufacturers for Tank Monitoring And Leak Detection Systems: Tank monitoring and leak detection systems, featuring inventory control, intank leak detection, interstitial leak detection, containment sump sensing, and overfill alarm shall be subject to compliance with requirements of the Contract Documents; acceptable manufacturers are as follows:
OPW
DOUBLE WALL FIBERGLASS UNDERGROUND FUEL OIL TANKS
General Requirements:
Materials: Tanks shall be manufactured of fiberglass reinforced plastic using polyester resins with glass fiber reinforcement.
Annular Space: Tank shall have a space between primary and secondary shell walls to allow for free flow and containment of leaked products from the primary tank.
Strike Plate: Primary storage tank shall have deflector plates located directly below openings into tank. Deflector plates shall be of fiberglass resin to be an integral part of tank shell.
Tank Capacity: Tank shall have a capacity of 10,000 gallons with the diameter and length indicated on Drawings.
Loading Conditions: Tanks shall meet the following design criteria:
External Hydrostatic Pressure: Buried in ground with 7feet of overburden over top of tank. Hole fully flooded and a safety factor of 2to 1 against general buckling.
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Surface Loads: When installed in accordance with manufacturer's installation instructions, tanks shall withstand surface H20 axle loads (32,000 pounds per axle).
Internal Load: Primary tank and annular space shall withstand independent pressure test of 5psi on tanks of 4foot through 10foot diameters, resulting in a 5to 1 safety factor.
Design tanks to support accessory equipment, including heating coils, ladders, drop tubes, and piping sumps when installed in accordance with manufacturer's recommendations and limitations.
Product Storage Requirements: Tanks shall be designed for operation at atmospheric pressure and, therefore, shall be vented.
Tanks shall be capable of storing liquids with specific gravity up to 1.1.
Tanks shall be capable of storing fuel oil at temperatures not to exceed 150degreesF at tank interior surface.
Tanks shall be chemically inert to petroleum products.
Tank Openings: Tank shall have:
(1) Manways With a 22Inch Minimum Inside Diameter
(1) 4Inch Fill Line
(1) 3Inch Vent/Sounding Line Combination
(1) 4Inch Interstitial Liquid Sensor Riser
Manway Covers: Manway covers shall be provided with flanges for an oil level probe.
Manway Risers: Each of the (2) risers shall be 42inch minimum inside diameter.
Lid inside diameter shall be a minimum of 1inch larger than the outside diameter of the manway cover.
Fittings and Connections:
Threaded fittings on UL labeled tanks for the storage of petroleum products shall be of a material of construction consistent with requirements of UL label. Supply fittings with threaded plugs.
Standard threaded fittings shall be 4inches in diameter and shall be half couplings. Reducers shall be used for smaller sizes, where specified, and shall be provided by Contractor.
Thread Standards: Threaded fittings shall have machine tolerances in accordance with ANSI Standards for each fitting size.
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Strength: NPT fittings shall withstand a minimum of 150footpounds of torque and 1,000footpounds of bending, both with 2to 1 factor of safety.
Provide (1) McDonald Model 882, or Owner approved equal, 3inch sounding line cap suitable for padlocking.
Provide (1) Morrison Brothers Company No.155, or Owner approved equal, 3inch double outlet vent cap with stainless steel screens and threaded connection.
Provide waterproof couplings for conduit and piping penetrations of the fiberglass manway riser.
Couplings for fiberglass containment piping shall be FRP (fiberglass reinforced plastic) type.
Provide swing joints on the oil supply, oil return, and vent piping to minimize strain on piping caused by tank settlement.
Provide Preferred Utilities, or Owner approved equal, fusible link syphon breaker at high point in fuel oil suction line in Boiler Room.
Tank Tappings and Related Pipe Sizes:
Service / Tappings / RFP PipeVent/Sounding / 4-Inch / 3-Inch
Fill / 6-Inch / 4-Inch
Annular Space / 4-Inch / 4-Inch
Refer to Drawings for locations. Provide reducer bushings as required.
Fuel oil fiberglass fill tube shall screw into bottom of a double tapped 6by 4 reducer bushing inserted into a standard 6inch NPT half coupling and terminate 6inches from bottom of tank with a 45degree chamfer.
ACCESSORIES
Lifting Lugs: Provide lifting lugs on tank. Lugs shall be capable of withstanding weight of tank with a safety factor of 3.
HoldDown Straps: Provide glass fiberreinforced plastic anchor straps as supplied by tank manufacturer. Number and location of straps shall be as specified by manufacturer. Straps shall be capable of withstanding buoyancy load for tank diameter.
Certification Plate: UL label shall be permanently affixed to tank.
Fill Cap and Spill Containment Vessel:
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Fill cap shall be McDonald Model 267C, or Owner approved equal, 4inch Almag35 aluminum cap with a spring loaded brass locking latch. Latch shall have provisions for padlocking.
Spill containment vessel shall be Flex Catch Model 705-25BG, below grade, 25gallon recovery vessel, as manufactured by EBW, Inc., or Owner approved equal. Vessels shall include an 30inch round access manhole with fiberglass lid, a light weight aluminum cover, cast iron attachment ring, cast iron base, and a cement and gravel guard around bellows:
Cast iron base shall be screwed onto fill pipe from tank and a fill pipe extension with lockable fill cap shall be installed inside the bellows chamber.
Manholes: Manholes above manway risers shall be Neenah Foundry Company No.R1740D large manhole frame and solid lid, or Owner approved equal.
Street Box: Street box for 3inch sounding line and for 4inch interstitial sensing riser shall be OPWAOW, 12inch diameter by 12inch long skirt observation manhole with steel skirt and cast iron body and cover, as manufactured by Dover Corporation/OPW Division, or Owner approved equal.
Fill Tubes:
Tubes shall be fiberglass reinforced plastic.
Tubes shall be factory installed, 4inch diameter, and shall include a 6inch steel fitting with a double tapped reducer bushing to 4inch diameter.
Tubes shall be standard items as manufactured and installed by tank manufacturer.
FRP fill tubes shall be supplied by Fluid Containment, or Owner approved equal. Refer to Drawings for location.
Provide oil tank measuring stick and chart.
Filter Fabric: Filter fabric shall be utilized to prevent migration of backfill material with native soil and maintain integrity and stability of backfill material.
Suitable brand name filter fabrics are itemized below. Local filter fabric distributors can be identified by calling the phone numbers listed.
Manufacturer: DuPont
Product: TYPAR 3401 or TYPAR 3341
Telephone: (800) 441-9475
Manufacturer: Hoechst Fibers
Product: TREVIRA S1120 (Hole Depth Less Than 10Feet Deep)
TREVIRA S1127 (Hole Depth Greater Than 10Feet Deep)
Telephone: (800) 845-7597
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Manufacturer: Phillips Fibers
Product: SUPAC 4NP
Telephone: (800) 845-5737
TANK MONITORING AND LEAK DETECTION SYSTEMS
Hardware:
Provide a wall mounted console with the following:
A 2line, 24character, liquid crystal display for onsite viewing of inventory, leak detection, and alarm information.
A 24button, front panel keyboard with control and alphanumeric functions for programming, operating, and reporting.
Three (3) front panel LED's to provide a visual indication of poweron, warning, and alarm conditions.
An internal, audible warning and alarm indicator.
Intrinsically safe.
UL listed.
***** SELECT ONE OF THE FOLLOWING *****
An integral report printer with builtin takeup spool for hard copy documentation of inventory, leak detect, and alarm information.
A standard RS232 communications interface module providing data transmission to a computer and printing device.
***** END *****
A 4relay output module programmable to alarm limits and capable of actuating external alarm devices.
A 4input intank probe module (maximum of 2 modules per console) compatible with standard capacitance probes or magnetostrictive probes.
An 8input sensor module compatible with sump float switch sensor and interstitial sensor.
Oil level probe shall be a Series 8473, or Owner approved equal. Magnetostrictive inventory/leak test probe capable of utilizing standard gas and oil resistant wire between 14AWG and 18AWG for field connections. Provide a 4inch probe riser cap and ring kit.
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MPS Master
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No more than (2) wires between the probe and control console.
Leak detection capability of 0.1gph.
Thirdparty certification in accordance with U.S. EPA's "Volumetric Tank Tightness Testing Method".
Suitable for No.5 and lighter fuel oil.
Sump sensor switch shall be a Series 7943, or Owner approved equal, singlecable float switch sensor capable of detecting the presence of liquid in the containment sump. Sensor shall be capable of utilizing standard gas and oil resistant stranded wire.
No more than (3) wires between sensor and control module.
Overfill alarm shall be a Series 7900, or Owner approved equal, alarm relay capable of detecting an overfill condition and activate an alarm horn and light.
One (1) alarm shall be located outside near oil tank and shall be equipped with an Alarm Acknowledgment Switch so that fuel oil delivery personnel are required to deactivate alarm.
One (1) alarm shall be located at the TLS350 console.
Alarm shall activate when fuel oil tank is 95percent full.
Interstitial sensor shall be a Series 7943, or Owner approved equal, singlecable float switch sensor capable of detecting the presence of liquid in the annulus of doublewall tanks. Provide a 2inch interstitial sensor Riser Cap and Adapter Kit. Sensor shall be capable of utilizing standard gas and oil resistant stranded wire.
No more than (2) wires between sensor and control console.
Operating Capabilities:
Unit shall be capable of monitoring inventory (oil level) and produce a combination of automatic and manual reports which shall include the following information:
Fuel Volume
Fuel Weight
Fuel Temperature
Temperature Compensated Fuel Volume
Last Inventory Increase Amount
Last In-Tank Leak Test Result
Time and Date
Fuel Identification
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The ability to perform both automatic and manually activated leak detection tests, in accordance with Federal EPA Regulations 40CFR, Part280, which includes a leak analysis report.
The ability to monitor up to (64) interstitial areas or containment sumps.
Computer formatted and printing terminal formatted reports.
Programmable automatic report times.
Programmable alarm limits to warn of:
Leaks
Overfills
Low Inventory
System shall be capable of the following performance specifications in a 10,000gallon tank:
Relative Height of Fuel, Plus or Minus 0.1 Inches
Relative Volume of Fuel, Plus or Minus 15 Gallons
Fuel Temperature, Plus or Minus 1.5 Degrees F
Time, Plus or Minus 1 Minute Per Month
Leak Detection Rate of 0.1 GPH or Greater
Store in memory at least (10) delivery reports per tank.
Provide alarm history reports on demand, locally or remotely.
Provide a flexible console profile setup with U.S. or metric measurements.
PART - EXECUTION
PERMITS
Permits, Fees, and Notices: Contractor shall contact State and local Fire Marshals, obtain required permits, and pay fees necessary for the installation of fuel oil tank(s) and piping connections to boilers and other fuel burning apparatus.
INSTALLATION INSTRUCTIONS
General Requirements: Install fiberglass underground tank(s) in accordance with Fluid Containment, Inc. installation instructions.
Installation is related to the procedure for steel tanks, following NFPA30 and 31 practices. However, backfill shall be washed pea gravel type material, a naturally rounded aggregate 1/4inch nominal size, ranging from 1/8inch to 3/4inch diameter.
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If pea gravel is not available in a specific area, washed stone crushings 1/8inch to 1/2inch diameter, meeting requirements of ASTM C33, may be used with satisfactory results. Other backfill materials shall not be used without consulting OwensCorning Fiberglass.
Excavation: Tank excavation shall be free from material that may cause damage to tank. Care shall be taken during installation that foreign matter is not introduced into excavation or backfill. Bottom of the excavation shall be hand leveled.
Hold Down Pad: Provide concrete hold down pad as shown on Drawings. Tank(s) shall be separated from concrete slabs by at least 1foot of washed pea gravel.
Concrete pad shall be 12inches thick and shall extend 12inches beyond tank in all directions. Reinforce pad with two mats of No.5 reinforcing bars, 12inches on center in both directions.
Tank Placement: Prior to placing tank in excavation, foreign matter shall be cleaned from tank. Equipment to lift tank shall be of adequate size to lift and lower tank without dragging and dropping to ensure no damage to tank. Tank shall be carefully lifted and lowered by use of cables or chains attached to lifting lugs in accordance with manufacturer's recommendations. Under no circumstances shall chains or sling be used around tank shell.
Line sides and bottom of excavation with filter fabric. Overlap adjoining fabric panels a minimum of 12inches. Place backfill on top of filter fabric in and around excavation perimeter to hold fabric in place.