Double Wall Fiberglass Underground Storage Tanks. CSI 3-Part Specifications.

SPECIFICATIONS

1. The primary tank�s standard pipe fittings are 4" NPT half couplings. All tanks include one manway with three or more primary tank fittings in the cover. All other primary tank fittings are mounted on the tank. Additional manways and tank fittings are available on a made-to-order basis.
   
0. Tank bottom deflector plates are standard under every manway and primary tank fitting.
   
0. An optional fiberglass reservoir for leak monitoring can be integrally bonded to the top of all 6' diameter and larger double-wall tanks. It includes a 4" NPT half-coupling fitting mounted on top of the reservoir, which allows access to the cavity between the inner and outer tank walls. On 6' diameter and larger tanks with an optional fiberglass reservoir, the reservoir is positioned over the normal monitor fitting position and the tank will not include a separate monitoring fitting. The rib under the reservoir is hollow if the annular space is not factory filled with monitoring liquid.
   
0. For all double-wall tanks without a reservoir, a 4" NPT annular space fitting is included on the top of the tank for monitoring. It permits access to a hollow rib which accommodates the installation of liquid sensors.
   
0. Fiberglass reservoirs are not included on 4' diameter tanks. A contractor-supplied 4" diameter riser pipe must be inserted into the 4" diameter annular space fitting to serve as the tank�s reservoir. This riser pipe must be at least 2" longer than the electronic sensor.
   
0. All primary tanks must be vented. They are intended to be operated with fluid levels no higher than the tank top. Fiberglass tanks are designed to be operated at atmospheric pressure only � except when using vapor-recovery systems � provided the pressure or vacuum does not exceed 1 psi on the primary tank. Over-pressurizing the primary tank will result in tank failure. When venting the monitoring cavity between the inner and outer tank, it must be vented independently from the primary tank (annular space venting is required for all hydrostatically monitored tanks).

Although our standard double-wall tanks are designed to accommodate most storage applications, they can be modified to include additional manways, tank-mounted fittings or other double-wall tank accessories. Made-to-order tanks require additional lead time for production and are more expensive to purchase.

1. The location of additional and/or modified tank accessories should be referenced by the numbered fitting position between the ribs.
   
0. The primary tank�s standard pipe fittings are 4" NPT half couplings. All tanks require at least one manway. The manway cover should include at least one fitting to facilitate future volumetric tank testing.
   
0. Specifying more or larger manways than available on standard tanks may alter the anchoring strap locations. These can often be relocated, but require special approval prior to any relocation. Larger manways also require larger containment collars.
   
0. We recommend that all additional manway covers include at least one fitting to facilitate future volumetric precision tank testing.
   
0. Tank bottom deflector plates are standard under every manway and fitting.
   
0. Monitoring fittings, reservoirs and lift lug locations can sometimes be relocated, but require special approval prior to any relocation.

All double-wall tank accessories and monitoring equipment are warranted to be free from material defects in workmanship and materials for a period of one (1) year following date of original delivery by Containment Solutions.

1. Cast-in-Place Concrete: Section 03300
   
0. Anchor Bolts: Section 05501
   
0. Plastic Pipe: Section 15064
   
0. Liquid Level Gauges: Section 15174
   
0. Other Related Work � such as Excavation and Boiler Equipment

1. Acceptable Manufacturers: Containment Solutions, Inc., Conroe, Texas.
   
0. Governing Standards:
   
1. ASTM Specification D4021. Glass Fiber Reinforced Polyester Underground Petroleum Storage Tanks.
   
0. 2. UL 1316 Underwriters Laboratories, Inc., Glass Fiber Reinforced Plastic Underground Storage Tanks for Petroleum Products.
   
0. National Fire Protection Assoc. (NFPA 30) Flammable and Combustible Liquids Code and (NFPA 31) Standards for Installation of Oil Burning Equipment.
   
0. General Services Administration, Public Building Service Guide Specification, PBS: 1568.

1. Shop Drawings: Contractors shall submit _______ copies of shop drawings for each tank. Drawings shall include all critical dimensions and show locations of all fittings and accessories, i.e., manways, ladders, hold-down straps, heating coils, etc. Materials of construction shall be in accordance with Section 1.02 of this specification.
   
0. Catalog Data: Contractor shall submit ________ copies of manufacturer�s literature.
   
0. Certification Plate: UL labels shall be affixed to each tank.
   
0. Installation Instructions: Contractors shall submit ________ copies of manufacturer�s latest installation instructions.
   
0. Calibration Charts: Contractors shall submit copies of manufacturer�s latest calibration charts.

• Vented to atmosphere
• Vacuum � 5 psi maximum
• Positive air pressure (5 psi maximum)
• External hydrostatic pressure � 7' maximum groundwater head pressure over tank top
  

0. Tanks 6' diameter and larger shall have an integrally mounted reservoir* installed on the tank for optional hydrostatic monitoring. The reservoir shall be constructed of fiberglass reinforced plastic materials and warranted for 30 years against failure due to internal/external corrosion and when properly installed, against structural failure (same as tank warranty).
   4' diameter DWT-6 Type II tanks do not include a fiberglass reservoir. A 4" diameter riser pipe screwed into the 4" diameter annular space fitting will serve as the reservoir.
   
0. Tank shall be designed with one 4" fitting that will access the tank bottom between the primary and secondary walls (annular space).
   
0. The double-wall tank monitor shall be capable of detecting a breach in the inner and/or outer tank under the following installed conditions:
   
1. When the inner tank is empty.
0. When the inner tank is partially or completely full and the groundwater table is below the tank bottom.
0. When the inner tank is partially or completely full and the tank is partially or completely submerged in groundwater.
   
0. The leak detection performance of the hydrostatic monitoring sytem shall be tested and verified by a qualified independent consultant to detect leaks as small as 0.10 gallons per four within a one month period..
   
0. All monitoring equipment, including FRP reservoirs and electronic controls, shall be UL listed or accepted.
   
0. If hydrostatically monitored, any solution used in the tank annular space shall have UL approval for compatibility with the tank and be a contrasting color to the tank surface to facilitate visual inspection of the tank for leaks prior to burial.

1. Anchor Straps � Provide glass fiber reinforced plastic anchor straps for each tank shown. Number and location of straps shall be as specified by manufacturer. Each strap shall be capable of withstanding a maximum load for each tank diameter as shown
   

Tank Diameter (ft)	Max. Load (lbs.)
4'0	4,200
6'0	18,000
8'0	25,000
10'0	25,000


Straps shall be standard as supplied by the tank manufacturer.


0. Certification Plate � Underwriters Laboratories label shall be permanently affixed to each tank.
   
0. Flanged Manways
   
1. The standard manway is 22" ID. The 30" and 36" ID manways are optional.
   
0. All manways will be furnished complete with U.L. listed gaskets, bolts and covers.
   
0. Location � see standard tank drawings (pages 15-22).
   
0. The steel manway cover is standard with 4" diameter NPT fittings. 22" manway covers with an even number of fittings will be placed on an 8" radius. Manway covers with an odd number of fittings will have one fitting centered and the remaining fittings placed on an 8" radius. 30" manway cover fittings are standard 12" radius. 36" manway cover fittings are standard 15" radius.
   
0. Manway risers 48" in diameter and 42" high will be supplied to provide access to the manway lid. A 24" x 24" galvanized street box with a cover must be provided by contractor for at-grade installation.
   
0. Fiberglass manway extension tubes 24" long will be provided for the manways.
   
0. Fill Tubes � Fill tubes of appropriate design will be supplied by contractor.
   
0. Hydrostatic Monitor Accessories
   
1. Brine Antifreeze
   Brine Solution Designation: BAS-30
   Chemical Composition: 30%+ calcium chloride, 1% to 3% potassium chloride, 1% to 2% sodium chloride, Balance water
   Visual Appearance: Green in color, Odorless fluid
   Specific Gravity @ 60�F: 1.272-1.317
   Factory installed on tanks 30,000 gallon and under. Bulk brine jobsite installed on 35,000 gallon and 40,000 gallon tanks.
   
0. Reservoir Sensor � The FHRB 810 reservoir sensor is specifically designed for installation in the reservoirs of CSI double-wall tanks. The components of the sensor are compatible with CSI supplied brine solutions. The sensor is also compatible with any other control panel that accepts normally open or closed switches. The sensor provides two alarm points: high brine and low brine. The sensor can be wired to a control panel to provide only a single alarm (not distinguishing between high or low alarms) or it can be wired to report both alarm conditions.
   
0. Electronic Controllers for Reservoir Sensor � The FHRB 810 reservoir sensor interfaces with leak control panels Models CPF or inventory panels Models CPI. The CSI control panels and reservoir sensor shall be UL or Factory Mutual listed as intrinsically safe. The correct number of input circuits must be used, either one or two, to provide the type of desired alarm reporting, i.e. single alarm or dual alarm (high brine or low brine). Additional leak detection sensors and inventory monitoring probes shall be available to interface to the control panels.
   
   All control panels shall include:

• Alarm lights for each circuit
• Audible alarm with reset button
• System test button
• NEMA 4 housing
• Wall mounting capabilities
• Dry contact relay for each input circuit
• RS 232 port (inventory panels)
• ALPHA numeric display (inventory panels)
• Printer option (inventory panels)
  Note: All wiring materials are provided by the contractor. Wiring is required from the power source to the control panel and from the control panel to the probe and sensor assemblies.
  

0. Non-Sealed FRP Turbine Enclosure (Model NTE Series) � The non-sealed turbine enclosure consists of a fiberglass reinforced plastic (FRP) enclosure body (variable length in 12" increments, 42" or 48" ID�s), an FRP reducer (42"x30" or 48"x30" ID�s), and a loose fit FRP lid with handle. The reducer opening must be large enough (minimum 28") to allow for the removal of a 22" manway lid. The lid OD must be small enough to be removed through a 36" street box. The enclosure body must be capable of joining to the 42" or 48" diameter secondary containment collar with a leaktight adhesive joint. Cut lines for field trimming will be marked on the bottom 12" of the enclosure body in 3" increments.
   

Model No.	Length	Model No.	Length
NTE42-2	2'	NTE48-2	2'
NTE42-3	3'	NTE48-3	3'
NTE42-4	4'	NTE48-4	4'
NTE42-5	5'	NTE48-5	5'
NTE42-6	6'	NTE48-6	6'


If needed, refer to Section I for the optional adhesive kit (to bond the enclosure body to the containment collar) and Sections J, K and L for the field installed fitting kits (for electrical and plumbing connections to the turbine enclosure).


0. Watertight Turbine Enclosure (Model WTE Series) � The watertight turbine enclosure consists of a fiberglass reinforced plastic (FRP) enclosure body (variable length in 12" increments, 42" or 48" ID�s), an FRP reducer (42"x30" or 48"x30" ID�s) with o-ring groove and o-ring gasket, and a push-on FRP lid with two handles. The reducer opening must be large enough (minimum 28") to allow for the removal of a 22" manway lid. The lid OD must be small enough to be removed through a 36" street box.
   
   The enclosure body must be capable of joining to the 42" or 48" diameter secondary containment collar with a leaktight adhesive joint. The reducer must be capable of joining to the enclosure body with an external leaktight adhesive joint to allow for field installation of the adhesive without entering the enclosure.
   
   With the lid installed, the assembly must provide a watertight seal with water up to 12" over the lid. The lid includes a non-skid exterior surface and must be able to support a person standing on the lid without damage to the lid. One of the lid handles is to be offset to aid in the removal of the lid and the other is centered on the lid. Cut lines for field trimming will be marked on the bottom 12" of the enclosure body in 3" increments.
   

Model No.	Length	Model No.	Length
WTE42-2	2'	WTE48-2	2'
WTE42-3	3'	WTE48-3	3'
WTE42-4	4'	WTE48-4	4'
WTE42-5	5'	WTE48-5	5'
WTE42-6	6'	WTE48-6	6'


Refer to Section I for the adhesive kit (to bond the enclosure body to the containment collar and to bond the reducer to the enclosure body) and Sections J, K and L for the field installed fitting kits (for electrical and plumbing connections to the turbine enclosure).


0. Sealed FRP Turbine Enclosure (Model STE Series) � The sealed turbine enclosure consists of a fiberglass reinforced plastic (FRP) enclosure body (variable length, 42" or 48" ID�s), an FRP reducer (42" or 48" ID�s) with an oval flanged manway (23"x29" ID�s), a flat gasket, SS bolts with non-galling silicone-bronze nuts (or optional bolt ring), and an oval FRP lid with handle. The reducer opening must be large enough (minimum 28") to allow for the removal of a 22" manway lid. The lid OD must be small enough to be removed through a 36" street box. The enclosure body must be capable of joining to the 42" or 48" diameter secondary containment collar with a leaktight adhesive joint. The reducer with oval flanged manway must be capable of joining to the enclosure body with a leaktight adhesive joint.
   
   With the lid installed, the assembly must provide a watertight seal with water up to 7' over the lid. The lid may be supplied with an optional 6" NPT fitting with plug which can be used as an observation port. Cut lines for field trimming will be marked on the bottom 12" of the enclosure body in 3" increments.
   

Model No.	Length	Model No.	Length
STE42-2	2'	STE48-2	2'
STE42-3	3'	STE48-3	3'
STE42-4	4'	STE48-4	4'
STE42-5	5'	STE48-5	5'
STE42-6	6'	STE48-6	6'


Refer to Section I for the adhesive kit (to bond the enclosure body to the containment collar and to bond the reducer to the enclosure body) and Sections J, K and L for the field installed fitting kits (for electrical and plumbing connections to the turbine enclosure).


0. Turbine Enclosure Adhesive Kit � (Kit AD) - When properly installed and cured, the adhesive kit provides a watertight seal to prevent the ingress of water. The adhesive kit includes 1/2 gallon of adhesive in a one gallon capacity can. The kit also includes catalyst (hardener), a wooden mixing stick, a three inch wide plastic putty knife, 60 grit sandpaper, and installation instructions. One adhesive kit is required for each turbine enclosure; the watertight and sealed turbine enclosures require two kits.
   
0. Field Entry Boot � (Model FEB-3 or FEB-4) The FEB-3 or FEB-4 is designed to interface with 3" or 4" nominal OD FRP pipe.
   
0. FRP Coupling Kit � (Kit FC-3 or FC-4) - Designed to interface with 3" or 4" nominal OD FRP pipe manufactured by Ameron or Smith Fiberglass. The coupling ID is tapered at both ends.
   The two-piece coupling is constructed of fiberglass reinforced plastic and is field-installed using the supplied adhesive. Both pieces of the fitting are threaded together to hold the fitting in position while the adhesive cures.
   Kit FC-3 or Kit FC-4 includes one 3" or 4" nominal ID FRP coupling, adhesive, catalyst (hardener), plastic mixing stick and applicator, 60 grit sandpaper, and installation instructions.
   The contractor must provide the hole saw (4-1/2 or 5-1/2 inch OD) or reciprocating saw to cut the hole in the turbine enclosure prior to installing the FRP coupling.
   
0. Electrical Coupling Kit � (Kit EC-1)- Designed to interface with one inch steel electrical conduit. The two-piece coupling is constructed of steel and is field installed using the supplied adhesive. Both pieces of the fitting are threaded together to hold the fitting in position while the adhesive cures.
   Kit EC-1 includes two (2) one inch steel couplings, adhesive catalyst (hardener), plastic mixing stick, 60 grit sandpaper, and installation instructions.
   The contractor must provide a two inch hole saw or reciprocating saw to cut the hole in the turbine enclosure prior to installing the steel coupling.
   
0. Secondary Containment Collar � The secondary containment collar shall be constructed of fiberglass reinforced plastic. Collar shall be 42" or 48" in diameter and will be factory-installed in accordance with drawings.
   
0. Containment Collar Sensor is preassembled and ready to wire. All electrical components must be UL listed or accepted. This float switch is capable of detecting a 2" or more accumulation of liquid (water or product) in the turbine enclosure.
   
0. Ladders � Ladders shall be the standard ladder supplied by the tank manufacturer (carbon steel, stainless steel, aluminum). Refer to drawings for location.
   
0. Tank Lifting Lugs � Provide lifting lug(s) on all tanks. Lifting lug system shall be capable of withstanding weight of tank with a safety factor of 3:1.
   
0. Probe Drawstring � Nylon line shall be 150 lb. break strength located at the monitoring fitting nearest the end of the tank. When a reservoir is located at this position, the drawstring shall be installed within the reservoir. Drawstring length will allow for a 7' tank burial depth.
   
0. Fittings Threaded � NPT
   
1. All threaded fittings on UL labeled tanks shall be located in a manway lid or a tank mounted fitting within 12" of the tank top center line and be constructed consistent with the requirements of the UL label. Fittings to be suppled with removable temporary thread protectors or permanent metal plugs.
   
0. All standard threaded fittings to the primary tank and monitoring cavity are 4" in diameter. The standard secondary containment coupling is 6" in diameter. All standard threaded fittings are half couplings. Reducers are to be used for smaller sizes where specified and provided by contractor.
   
0. Thread Standards � All threaded fittings shall have machine tolerances in accordance with the ANSI standard for each fitting size.
   
0. Strength � Primary tank NPT fittings will withstand a minimum of 150 foot-pounds of torque and 1,000 foot-pounds of bending, both with 2:1 factor of safety.
   
0. Sizes

Sizes	Standard	Reducer Sizes
Inlet	4"	___________
Outlet	4"	___________
Vent	4"	___________
Guage	4"	___________
Fill	4"	___________




0. Location � Refer to drawings for location.
   
0. Suction Line � Shall be installed on the site by the contractor. Diameter of pipe and grade and schedule as called out in other sections.
   
0. Return Line � Shall be installed on the site by the contractor. Diameter of pipe and grade and schedule as called out in other sections.
   
0. All rigid internal piping shall be terminated at least 4" from the bottom of the tank.