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,*.. 1.: FIBERGLASS DOUBLE-WALL SUMP INSTALLATION INSTRUCTIONS r1. OPERATIONS r PERIODIC Important: Isolate All Sumps From Direct Traffic r Loading. FIGURE H-1 Fuel vapors may be present in the tank sump.To prevent fire or explosion hazard, keep all ignition sources away when removing sump enclosure lid.Treat Reinforced manhole Lid Sump Lid maintain Adequate any entry into sump area as confined space entry. Concrete Clearance • . _� 3"min. $ ys iB R gi Board (VX & - ASPHYXIATION FIRE EXPLOSION (5'X 5'X 3/4) The gasket lubricant will require periodic replacement e as it will degrade over time.Any lubricant that will ' not dissolve in gasoline or water, nor attack Buna-N rubber is acceptable. While not as long lasting, other lubricants like barium grease, or petroleum jelly can also be used. Lubricant can be applied directly to the gasket or to the inside surface of the lid flange. • The gasket is a maintenance item which will have f to be replaced periodically or when it shows a leak during a tightness test. The sump must be continuously monitored with an After backfilling to top of sump electronic leak detector for potential spills or leaks. • Backfill around sump to a level 3"above the horizontal position of the enclosed top. Place a 5'x J. RESERVOIR MONITORING 5'x 3/4"rigid board with hole on backfill to support • If the reservoir sensor indicates an alarm condition, concrete and provide a channel for water runoff it is necessary to first determine that the reservoir (see figure H-1). is level and that the alarm is not the result of an • Use a manhole large enough to allow sump lid incorrect initial fluid level setting. removal after installation. - Remove the sensor. • Adequate clearances must be maintained between - Test the sensor for proper operation. the sump lid and manhole lid to prevent the direct transfer of traffic load to the sump. Reset the fluid level in the reservoir by adding or removing fluid.The proper monitoring fluid level in • Pour slab directly onto rigid board. the reservoir is 1'F:"from the inside bottom of the • If the sump is located in a traffic area, the concrete reservoir. traffic pad, reinforcement, and thickness must be _ Reinstall the sensor and check for level. Ensure designed for job conditions and traffic loads to assure sensor is level and sitting on reservoir bottom. concrete traffic pad integrity. It is the responsibility of the tank owner or tank owner's representative to design the traffic pad for all loads. K. SUMP INSTALLATION • The Installation Checklist in this manual must be properly completed, signed by the installing contractor's representative and the tank owner's representative. • Seepage 10. 9