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J <br />i <br />Criterion forecl g Leak <br />system <br />preset threshold <br />measures and reports theoutput quantity and compares it to : predetermined threshold <br />to determine whether the r rlealdng. <br />4. This r* <br />single <br />uses a ■■ • sequence rr +iwr of tests (specifynumber of <br />required) r. a by ■•(specify• rime rterval betweentests) <br />to determine whether thepipeline is leawing <br />5. This system declares a leak if the output of the measurement system exceeds a threshold of <br />3 gal/h (specify flow rate in gal/h) in 1 out of ' 1 tests (specify, for example, <br />1 out of 2, 2 out of 3). If more detail is required, please specify in the space provided. <br />r • ns a• •r r • • from <br />min to less than 15 sec. <br />Evaluation r t r <br />r There are five options fr collecting the data n evaluating the performance of r <br />system.This rr was evaluated <br />(X) at a special -. Ori•• <br />at one or moreinstrumented rr ion r .r .•e facilities (Option <br />at five or more operational str . .■. facilities verified to be tight (Option <br />at 10 or more operational st• _e tank r. (Option <br />with an experimentally validatedcomputer mire (Option <br />totalof 92 tests were conductedon nonlealdng tank(s)between •1 • <br />and 6/25/91 a_ desddptioa of a` pipeline c r a m used in the evaluation is <br />summarized in Attachment <br />8. The pipeline used in the evaluation was 2 in. in diameter, 112 ft long and <br />constructed r fiberglass or i ■ <br />9. A mechanical line leak detector <br />C1'g was <br />( ) was not <br />present in the pipeline system. <br />Answer questions / ♦ / 11 if Optionor <br />i' The evaluation was conducted on (how u.r pipeline syste■a ry ■ in <br />diameter r"irr. in. to in, ranging in length from to <br />and constructed of(specifym . <br />pipeline Leak Detectioa System • Results Form page 2 of 5 _ <br />