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Above Ground Storage Tank Specifications for
Fuel Transfer Unit
All Tank Systems Shall Consist of the Following:
I. Tank
II. Containment Vessel
III. Receiving System
IV. Electrical System
V. Alarm System
VI. Electrical Control Panel
VII. Piping
VIII. Assembly
I. Tank
A. Shall be designed, constructed, and labeled per UL142 specifications.
B. Shall be of single wall construction, with all seams and fittings welded both inside and outside tank.
C. Shall be horizontal and include UL approved integrated support saddles for zone 4 condition.
D. Shall show date manufacturer’s test and manufacturer’s name.
E. Shall be labeled for stationary use only.
F. Shall include lifting eyes, for use when empty only, to lift complete unit.
G. Shall have CAL/OSHA approved ladder on tank.
H. Shall have permanent gauge stick in tank.
I. Shall be pressure tested to 5 PSI with all valves and fittings in place.
J. Shall have manway with inspection port.
K. Shall have a low point drain with a locking, non-freezing valve.
L. Shall have a normal vent
M. Shall have an emergency vent to meet or exceed NFPA-30 Firecode.
II. Containment Vessel
A. Shall be designed, constructed, and labeled per UL142 specifications.
B. Shall be of steel construction, minimum 10 gauge.
C. Shall be capable of containing over 110% of the volume of the tank.
D. Shall not exceed 12’ (twelve feet) in width.
E. Shall be skid-mounted, relocateable.
F. Shall have a locking, low point drain valve.
G. Shall have lifting hooks on the containment ends accessible from outside the containment wall.
H. Shall have a leak detection alarm.
I. Shall be leak tested with full load of water after assembly.
III. Receiving System
A. System shall be able to off-load vehicles and equipment.
B. Pump shall be rated at not less than 50 gpm (fifty gallons per minute).
C. Pump motor shall be rated 220 three-phase 1 ½ H.P.
D. All filling procedures shall be done at ground level (with operator outside of containment).
E. Shall have pumping system for unloading deliveries.
F. Shall have a seal-sealing emergency valve threaded directly in to the tank, with breakaway provisions.
G. Shall have a 212-degree F. fusible link that allows emergency valve to close in case of fire.
H. Shall have dry-lock system that prevents spillage of product.
IV. Electrical System
A. All electrical components shall meet all applicable NEMA and UL Standards for Class 1, Group D.
B. All wiring shall conform to all applicable NEC Standards for Class 1, Group D.
C. Area lighting shall be switch activated.
D. Control circuits shall be 120 volts.
E. Area and alarm lights shall be explosion proof.
F. Alarm horn shall be explosion proof.
G. Power requirements are three phase, 220 vac, 20 amps at load connection.
H. Float switch in containment shall be intrinsically safe.
V. Alarm System
A. Alarm shall be Class 1, Group D.
B. Alarm shall be both audible and visual.
1. Audible alarm shall incorporate an alarm silence which will allow subsequent activation of audible alarm.
2. Visual alarm shall be a flashing light that will not reset until alarm condition has been cleared.
C. System shall alarm on the following conditions:
1. High tank alarm; audible alarm is silenced with reset button.
2. High tank cut-off; power to pump is cut-off and restored with auto maintenance selector switch.
3. Liquid in containment; power to pump is cut-off and restored with auto maintenance selector switch.
VI. Electrical Control Panel
A. All electrical components shall be enclosed in a UL Listed, stainless steel NEMA 4X control panel.
B. Control system shall be controlled by a fuel systems control card with the following:
1. Shall be mounted and wired to quick disconnect devices.
2. Shall utilize an automotive grade microprocessor with built in memory.
3. Card shall operate from –40 Degrees to 180 Degrees F.
C. Control panel shall have the following:
1. Will shut down all arching devices on the over-fill or liquid in the containment.
2. Emergency shut-off button.
3. Alarm indicator lights.
4. Alarm reset.
5. Automatic / maintenance selector switch, key operated.
6. Gauge for tank level measured in percent.
7. Panel light test.
VII. Piping
A. Shall be minimum schedule 40 with forged steel fittings.
B. Shall have flanged connections where possible.
C. Shall have pressure relief to prevent pressure build-up from thermal expansion.
VIII. Assembly
A. All assemblies shall be with cadium-plated bolts, nuts, and lock washers.
B. All units shall be commercially sandblasted before painting.
C. All paint shall be fire resistant.
D. All units shall be completely assembled and operationally tested with approved testing fluid prior to delivery.
E. Tank, containment, saddle, and ladder shall be UL 58-02-03 listed as a unit.
F. Entire unit assembled not to exceed 24,000 pounds empty.
Copyright Bryant Tank, Inc. 1999
