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Re wom ended Prac(ktn�for the T6t nq and Yeti f lcatiun of Vill,Overfill,!_raft Detection aril 5ccur dud Containrot it Equlpmunt al UST Facilities <br /> • inspcc L and reirimalf alit contain mcnt sump if the water level changes 1/8(0,12-5) inch or great- <br /> IWA, gaxkcts and c:overx, er. the eamtaitatuctit Bljmp rsi1.9,Ihu integrity tit, <br /> 6.5.7 Pass/Fail Critefs. If the water level 6.6 Accelerated Precision Hydrostatic Test for Spill <br /> cltiaugcas IQ: h tlWA 1/8(0.125)iztt:ti, I1W ctxntxtinrzxurtt Buckets and Containment Sumps. Elcutrunic: prc;ci- <br /> sump passes the integrity test. O n test equipnae,nt can lee utilized to test spill buckets <br /> and containment sumps. it incorporaten% more sensitive <br /> equipment that perrraits a test to be conducted in a shorter <br /> periud rst diYte.ne prucedures use the same test fluid and <br /> -'s.-.:..:.::.,..-:,..,:. _.ki�j•. ;:get.. <br /> r.. tests the same volume as rather methods outlined in this <br /> chapter.Ilia trtnnuracturer of the n'tewumnlent equilxmen[ <br /> should speQify thr prmiiiicui and duration of the last and <br /> the pasWail critetin. Triowcver, paislfail criteria slirnyld <br /> nn( he lrss stringent than Iltt,t;far=ihctl fbr the 1-hour <br /> text in SeLdun 6.5.7. <br /> �a <br /> The:data shot for Scztium 6.2 or 6.5 may be uscd far this <br /> text. Refer to Ap1midix D. <br /> •' �' 6.7 Proper Disposal of Yest Liquids. '[iwst liquids <br /> must he disposed or prafrexly. Check with the Anil <br /> regarding requirements ror praper clispusal. <br /> FIGURE&7. Thy tP.st fluid hovpl in the tank.lufmp rnlAt <br /> be at least 4 Inches abova the highest sump parieva- <br /> Non or sidewall seam. <br /> 7. UST OVERFILL EQUIPMENT <br /> VERIFICATION, INSPECTION <br /> AND TESTING <br /> ,.P Although the cff6c0vci%LgA of avcrfill prover Lion rfevieLq <br /> can be tested by attempting to overfill a UST witty <br /> prctitlttc:l and [lUtertnining lfow wall the crevice: furts:ticros, <br /> this approach is 11ol Wrommended. Any mall'urwtion in <br /> the nvcrfiii tarcvcntinta device crtilcl t=ult ill 2 prc3duet <br /> rclmw, that could result in a threat to public health and <br /> . ; safety and envirmmental damage. <br /> Federal UST cultex re€luim,(hat aveafill prevention equip <br /> meat auminsideally restrict flow or alert The transfer' <br /> operator when the t,�ttk is nor more than 90 pertcmk full <br /> 1f <br /> s or shut of flow into a tank whc,x it is nt} more than 95 <br /> percent full.Other alcernatives to prevent overfills are the <br /> :5.'. ,► restriction ter flaw {luring a delivery 30 minutea prior to <br /> ' ovcsJrillirtg; cleating ibc opmdtor 1]minute befrore overfi)!1- <br /> ing may occur; or automatically shutting nff flow intn a <br /> tank so that none of the fittings located on top of the tank <br /> are exposed to product due to overfillhig. <br /> "Mic: committix lice written the rrc:c,rnmt:€r" praWiCcs <br /> FltallRE 8. Mess uring sficfrs used to measure the For autoinatic shutoff devices to reflect that the devices <br /> water iovol shautd be securely mounttad to anstrre that must be set to strut off llow when the tank is ao mare <br /> they do not move during the test. than 95 permit fall, and flaw t'estriction and ovcrfil] <br /> peLorg 0 <br />