COMPLIANCE INFO_1995-2011 - Laserfiche WebLink

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External Piping • The pump and attached piping must be free to move with the tank. • Use a fill box or street box to isolate the piping from the traffic pad. • Take precaution during construction to make sure no damage occurs to the exposed piping and fittings. External Internal Piping • Internal piping must terminate a minimum of- 1:14" f: ❑4" from the tank bottom (4', 6', 8', 10' diameter tanks) ❑ 6" from tank bottom for 12' diameter tanks. All. Tank Fill Tube Insert • A fill tube insert must be installed at the tank gauging fitting if the manual dipstick method is used to inventory tanks. • This ensures the dipstick point of impact is aligned with the tank bottom protector plate. • See section A 10 for minimum clearances. Al2. Filling Tanks • Do not fill tank until backfill is even with top of tank. • Never add product or water for hold-down in dry hole conditions until backfilling is even with tank top. • Exception - See installation procedure - wet hole - section A9. A13. Venting • All tanks must be vented. • Tanks are designed for operation at atmospheric pressure only (except for use with vapor recovery systems provided the pressure or vacuum does not exceed 1 psi.) • The vent opening should be the same diameter or larger than the piping used to remove product. Pressurized Product Deliveries CAUTION: • Pressurized product deliveries are not recommended. • If the delivery vehicle uses pumps to fill the tank: ❑ Install overfill, shut-off equipment in the tank and truck to prevent the tank from being overfilled. ❑ Overfilling the tank under pressure will damage the tank, even if the tank vent is unrestricted. Do not use a ball float valve for overfill protection. • For double-wall tanks, if the monitoring cavity between the inner and outer is vented, it must be vented independently from the primary tank. • The monitoring cavity of hydrostatically monitored tanks must be vented. A14. Manway and Manway Extensions • The standard 22" manway installed in single-wall tanks ❑ Has a load bearing capacity of 1200 lbs. • Optional heavy duty manway ❑ Has a load bearing capacity of 2400 lbs. • Fiberglas heavy duty manways must be specified on tanks equipped with helical heating coils, agitators or pumps with a total downward load greater than 1200 lbs. but less than 2400 lbs. ❑ Do not exceed 50 foot pounds during bolt tightening or manway flange damage may occur. Note: All 30" and 36" manways installed on single-wall tanks and all manways on double-wall tanks are heavy duty. gig All. Tank Fill Tube Insert • A fill tube insert must be installed at the tank gauging fitting if the manual dipstick method is used to inventory tanks. • This ensures the dipstick point of impact is aligned with the tank bottom protector plate. • See section A 10 for minimum clearances. Al2. Filling Tanks • Do not fill tank until backfill is even with top of tank. • Never add product or water for hold-down in dry hole conditions until backfilling is even with tank top. • Exception - See installation procedure - wet hole - section A9. A13. Venting • All tanks must be vented. • Tanks are designed for operation at atmospheric pressure only (except for use with vapor recovery systems provided the pressure or vacuum does not exceed 1 psi.) • The vent opening should be the same diameter or larger than the piping used to remove product. Pressurized Product Deliveries CAUTION: • Pressurized product deliveries are not recommended. • If the delivery vehicle uses pumps to fill the tank: ❑ Install overfill, shut-off equipment in the tank and truck to prevent the tank from being overfilled. ❑ Overfilling the tank under pressure will damage the tank, even if the tank vent is unrestricted. Do not use a ball float valve for overfill protection. • For double-wall tanks, if the monitoring cavity between the inner and outer is vented, it must be vented independently from the primary tank. • The monitoring cavity of hydrostatically monitored tanks must be vented. A14. Manway and Manway Extensions • The standard 22" manway installed in single-wall tanks ❑ Has a load bearing capacity of 1200 lbs. • Optional heavy duty manway ❑ Has a load bearing capacity of 2400 lbs. • Fiberglas heavy duty manways must be specified on tanks equipped with helical heating coils, agitators or pumps with a total downward load greater than 1200 lbs. but less than 2400 lbs. ❑ Do not exceed 50 foot pounds during bolt tightening or manway flange damage may occur. Note: All 30" and 36" manways installed on single-wall tanks and all manways on double-wall tanks are heavy duty.