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MAN 3.Whack the ]salt for holes and cracks. It should 7.3.2 Purpose. The purpose of Ellis inspccdan move freely in the cage,Replace any missing or is to verify that the overfill alarm is (YKr[[ting car- defective parrs, maly and is set to provide a warning when the tank 4.Check the vent orifice in the ven-restriction is no more than 90 percent.full. pipe, It must be open and located near the tap of 7.3.3 Description of Test. The procedures in the,tank, this tM are for overfill alarms that are an integral S.Use the ball float valve manufacturer's suggest- p of a typical ATC'F that uses magnetwtrictive ed inspections procedure to dc[ermine it vapor probes for fuel level measurements iu the UST. flow will be restric d when the tank is no more "The AW probe iK removed from the tsnk. What than 90 percent i u>. Mziko au}" adjustments 11eo- the product float is moved to the position cor- cssary to ensure that flaw will be restricted when responding to the 90 prxuent fill lovrul, the tdarni the tank is no more than 90 percent full. sliould activate. 6.After inspection of the bell float valve assembly, rcirYst�t11 it following the rrtanuFactitr�r's installs- 7.3-� Preparation. Use this test procedure its ticm instructions. conjltnClion With the mnititoring system rcianufao- turcr's installation and rriaitttenarice instt ctiotts. 7.2.7 Pass Fall Criteria. The ball float valve tank c� Refer to passes the inspection if the ball float valve Cnno- the Lankila�lufacturcr'schart For tine tions its designed, flow restriWon occurs when the capacity in gallons,the diameter and the volume of tank is no note than go percent full, and the tank- product that cosresponc4s to the product lave]. Lop fittings are vapor-tiglit_ When passible, print out the sys(efn setup to verify If any of the following conEgurations exist, the the proper cxuifigurnuon of the:ATG. overfill prevention system fails the inspection: 7.3.5 Test Equipment. Tl A aquipinenr shall • ball float valves installed in stoi age systems [hat include., are equipped with suction pumps and air rkmi- tools Fof the ncmoval t}F lha ATG probe; n stars; * ball float vaIves installed with coaxial Stage I tape measure.or gauge stick. vapor rDeovcry; 7.3.6 Test Procedure. * ball float valvt±.q used on taviks equipped with 1. Mus%ure the product level in the tank and com- reniotg_fill pipes and gauge openings without pare to the console reading to confirm ATG the use of"trap door" devices; or accuracy. if the reading doe, not ag=, contact ball Float valves installed in storage systems that the appropriate pe[sm nlsn are equipped with automatic shulofTdeviccs 2. Waify that(lie overfill alarm on the.KM is set to and the hall float valve is set to restrict flow provide.x warning when [lie tank is no snare than br-A-) a the tank is 95 percent full, 90 percent full. Consult the (ank Chart for the I the hall Float valve does not function as designed, inch-level setting for 90 pereen( tank valunie. flow restriction does not occur un Li I the tank is moire S. Verify on the ATG console that the overfil l alarm than 9D perctmt full, or the tank-top 1"iil`ings site got circuit is operational. vapor-tight,the ball float valve fails the insFc[ion. 4.Activate tho ovea-fAll alarm warning to verify its 7.3 Overfill Alarms. operation, if found defective, contact the appro- priate person. 7.3.1. General. Owxfill alarms pmuide an audio S.Remove the ATC-i probe cap and disconnect the hie andlor visible warning to the NO delivery cable from the ATG. driver if the product l--vcl in the UST reaches (lie 90 percent level during a delivery, They are often 6.Rernnve the ATG probe from the tank. We an integral part of the AT(i system. An overfill Cam CO ensure;that the product flat on the stem alarm does not stop or restrict product flow. does not catch on the bottom of the riser during Mtnaval. pei.org