Laserfiche WebLink
Recommend Pradio�s inr the Testing and Veri nation of Spill,Overfill,tcA Detection and Second"Cwtainmwt Egiripwnt at UST W111tws <br /> • hispea and minsxall all cotilainornt sump if the water 1cvel chiolgcs 1/8(0,125) inch or gwat- <br /> Iida, gas3kau; and covers, er, the containrment sumf, fails the irtegrity test. <br /> 5.5.7 Pass Fall Criteria. If the water level 6.6 Accelerated Precision Hydrostatic Test for Spill <br /> changes less than IA(0.125)inch,the containment Buckets and Containment Sumps. UIcetmnic pi-cci- <br /> sump passes the integrity test. sign test equipment can he utilized to test spiI I buckets <br /> and containment sumps. It incorporates mare sensitive <br /> equipment that permits a test to lw,conducted in a shovkr <br /> 3; period of time.The prouedures use the same test fluid and <br /> te< the saute volume as other mctho" outlined in this <br /> chapter.'l he manufacturer of the measurement equi f ment <br /> should specify the precision and duration of the teat and <br /> thepm/fail criteria uowever, PaWfail. Criteria should <br /> not he Icss stria ,t than those prascribcd for the 1-hour <br /> test in Section 6.53. <br /> The d ate.0cct far Scction,16.2 or 6.5 may he a d for this <br /> test. Refer to Appendix D. <br /> .'t 6.7 Proper I31spasal of Test Liquids_ llbst liquids <br /> must be disposed of properly. Check with the AM <br /> regarding re pirements Zia`proper disposal. <br /> FIGURE 6-7. The feW fluid level in the Mnk sump must <br /> be at least 4 Inches above the highest somp panetra- <br /> don or sld wall surer. <br /> T. iJST OVERFILL EQUIPMENT <br /> 'S <br /> VERIFICATION, INSPECTION <br /> AND TESTING <br /> Although the affetivent*ss ofovertill prevention devices <br /> r can be ttcd by attempting to overfill a USA' with <br /> product and dewniiiiing bow well the davice functions, <br /> this approach is not recommended. Any malfunction in <br /> i w the overfill prevention device coctid result in a product <br /> f, release that could result in a threat to public health and <br /> safety and environmental damage. <br /> Federal UST rules requite that overfill prevention equip- <br /> merit automatically restrict flow or alert: the Umsfer <br /> ' operator when the tank is no more than 90 peAr-cnt full <br /> or shut off fftsW into a tank when it is no more than 95 <br /> percent full.01hee alternatives to prevent overfills ate the <br /> t restriction of flow during a delivery 30 minures prior to <br /> Overfilling;alerting llic operator 1 Mill We WaM—avetftll- <br /> ing may occur; or automatically shutting off flow into a <br /> isnk so [hat none of the fittings located on top of the tank <br /> arc exposed to pinduct due to overfilling. <br /> Tie committee has written the recon)=nded pract1=9 <br /> FIGURE CrB. Measuring sticks used to meagure the for atitomatic shutoff devices to trflect that the devices <br /> water level should be securefy rr muted tO ansur'e that must be set to shut oil'flow when the tank is no more <br /> they do not move staring the test_ than 95 percent full, and flow re m-iction and overfill <br /> pei,org 0 <br />