Document QJ3vZBopaEk2rrbeGQ5nRGM25

ABD00056188 To: Distribution Interoffice Communication From: Date: Subject: Brett Bass October 29, 1986 VCM LEAK DETECTION SURVEY A VISIA Attached are the results of the completed 1986 Comprehensive VCM Leak Detection Survey. A total of eleven (11) leaks were detected and repaired. Every connection, flange, valve, etc. on the at tached isometric drawings was checked with a portable hydrocarbon detector (HNU). The points with readings above 50ppm with the probe as close to the equipment as possible were considered leaks and were noted. A tabulated list of all the VCM leaks reading over 50ppm is attached. A bar chart showing a decrease in the number of detected leaks over the past seven years is included on the following page. If there are any questions or comments, please advise. f. 6. s_s E. B. Bass PROCESS ENGINEER J. B. Popp PROCESS ENGINEER /beb cc: JF, JWW; DWH, VEM, CWT, RAF, MLN, TFL, JGC