Laserfiche WebLink
E <br />tank support and restraint of buoyant forces when installation <br />1 <br />N 01 L -7J M;+A t�D6rl� <br />Filter <br />fabdc ........ ... tl..11 <br />hit <br />Unstable <br />Modern Welding Company markets tanks with and without <br />dielectric isolation such as threaded nylon bushings or flange <br />isolation kits. When tanks do not have dielectric isolation, then <br />tank must use either: <br />A) Non-metallic piping, or <br />B) Conductive piping must be isolated from the backfill <br />material and any other metal or grounding device. <br />'ree to move with the tank. <br />Street boxes must be used to isolate tank's piping from loads <br />subjected at traffic pad. <br />Internal piping must terminate 4" to 6" from tank's bottom. <br />Never use water or fuel to ballast tank in a dry hole excavation <br />until backfill is at top of tank level. <br />All tanks must be vented to the atmosphere. Tanks are designed <br />for operation at atmospheric pressure. <br />Only when a vapor recovery system is utilized at the installation <br />shall pressure or vacuum be administered with maximum <br />amount being .25 psi. <br />Special piping provisions shall be provided on double wall and <br />jacketed secondarily contained underground tanks to prevent <br />water from entering the annular space through monitor <br />openings and secondary vents. <br />Always follow guidelines of NFPA -30, 31 and PEI/RP- 100 and <br />local codes having jurisdiction when installing and piping <br />underground storage tanks. <br />L] <br />Refer to Modem Welding Company's publication, "Finishing <br />Instructions!' for proper installation of permanent coverings for <br />unused openings, lifting lugs, piping, fittings and any exposed <br />steel surfaces. Finishing Instructions are not complete until <br />all exposed steel surfaces on tank are sealed with fiberglass <br />resin. <br />Modem Welding Company would like to acknowledge arF-1 <br />thank the Petroleum Equipment Institute of Tulsa, OK <br />tm.&t.Npa "T X. 4.A% ;;; x -t <br />[4111:1-il <br />Corporate Office <br />Owensboro, KY (502) 685-4400 <br />Modem Welding Company of Owensboro, Inc <br />Owensboro, KY (502) 683-5323 <br />Modern Welding Company of Ohio, Inc <br />Newark, OH (614) 344-9425 <br />Modern Welding Company of Ohio, Inc <br />Heath, OH (614) 344-9425 <br />Modern Welding Company of Florida, Inc <br />Orlando, FL (407) 843-1270 <br />Modem Welding Company of Texas, Inc <br />Houston, TX (713) 675-4211 <br />Modern Welding Company of Texas, Inc <br />Rhome, TX (817) 636-2215 <br />Modern Welding Company of Iowa, Inc <br />Burlington, IA (319) 754-6577 <br />Modem Welding Company of California, Inc <br />Fresno, CA (209) 275-9353 <br />Modem Welding Company of Georgia, Inc <br />Augusta, GA (706) 722-3411 <br />