Guide Specifications – Single Wall FRP
Drinking Water
Short
Form
The
contractor shall provide a fiberglass reinforced plastic (FRP) underground storage tank as shown on the
drawings.
The tank
size, fittings and accessories shall be as shown on the drawings. The fiberglass
tank shall be provided by Amprotec, Inc. of Houston Texas 800 537 9444
The tank
shall be tested and installed according to the Amprotec Installation Manual and
Operating Guidelines for Single-Wall and Double-Wall Fiberglass Underground
Storage Tanks in effect at time of installation.
Note: All Potable Water Storage
Tanks must be Steam Cured for a minimum of 36 consecutive hours.
Part I: General
1.01
Quality Assurance
A. Acceptable Manufacturer: American
Process Technology, Inc. 800 537 9444
B. Governing Standards, as applicable:
ASTM
Part II: Products
2.01
Single Wall Fiberglass Reinforced Plastic (FRP) Underground Storage Tanks
A. Loading Conditions – Tank shall meet the
following design criteria:
1. Internal Load – Tank certified to pass a
maximum 5-psig air-pressure test with 5:1 safety factor. Contractor shall
individually test tanks for leakage prior to installation.
2. Vacuum Test – To verify structural
integrity, every standard 10'-diameter tank and smaller shall be vacuum tested
by the manufacturer at the factory to 11.5" of mercury.
3. Surface Loads – Tank shall withstand
surface H-20 axle loads when properly installed according to manufacturer's
current Installation Manual and Operating Guidelines.
4. External Hydrostatic Pressure – Tank shall
be capable of being buried in ground with 7' of overburden over the top of the
tank, the hole fully flooded and a safety factor
of 5:1 against general buckling.
5. Tank shall support accessory equipment –
such as heating coils, drop tubes, submersible pumps and ladders –
when installed according to tank manufacturer’s
current Installation
Manual and Operating Guidelines.
B. Product Storage
1. Tank shall be capable of storing
potable drinking water with a specific gravity up to 1.1.
2. Tank shall be vented to atmospheric
pressure.
3. Tank shall be capable of storing products
identified in the manufacturer’s current standard limited warranty.
C. Materials
1. Tank shall be manufactured with 100% resin
and glass-fiber reinforcement. No sand fillers.
2 Accessories
A. Optional Anchor Straps
1. Straps shall be FRP anchor straps as
supplied by tank manufacturer.
2. Number and location of straps shall be
specified in current literature by tank manufacturer.
B. Manways
1. All manways shall be flanged and 22" I.D.,
complete with UL-listed gaskets, bolts and covers. (30" and 36" I.D. manways are
also available on certain larger tanks.)
2. Location is shown on tank drawings.
3. Optional manway extensions shall be FRP and
24" long.
C. Optional Fill Tubes
1. Fill tubes shall be FRP, 4"-diameter, with
a 6" x 4" double-tapped reducer bushing, and include a 6" NPT
fitting. Tubes shall terminate a minimum of 4" from the bottom of tank (a
minimum of 6" for a 12'-diameter tank).
D. NPT Threaded Fittings
1. All standard threaded fittings shall be
half-couplings and shall be 4"- or 6"- diameter. Reducers are to be used for
smaller sizes where shown and provided by contractor.
2. Strength – NPT fittings shall withstand a
minimum of 150 foot-pounds of torque and 1,000 foot-pounds of bending, both with
a 2:1 safety factor.
Part III: Testing and
Installation
3.01
Testing
3.02
Installation
A. Tank shall be installed
according to the Amprotec Installation Guidelines for
Single-Wall Fiberglass Underground Storage Tanks in effect at
time of installation.
B. Contractor shall be
trained by the tank manufacturer, the state or other approved agency.
Part IV:
Warranty
4.01
Warranty
A. Warranty shall be manufacturer's limited 2 year warranty for single
underground water tanks in effect at time of purchase.
by
Alltankscom LLC. Houston Texas 800 537 9444