Document QMqBD0zNRag89XB9V5pe0Xgzk

c Distribution i. ' .. X;.- \ ; . -K~ M~ Bowman C,, M. Davis. Li C. Moore - .Peterhansen.' Loree: Samtel J.. W_ Stadler W. C. StolX F. G. Tiberia- Engr. & Graphics A series---'.off'tests; were run on Garloc's Blue-Gard compressed non- , asbestos...gasketing;-with, the following, information, obtained: 1^.' 'Approximate density. = '91*3#/ft^'.'(approximately 8.7# below- -X x.; ..< '..^'published data)-.'.. '2...Leakage Results.-'I'XX 2 .1 Gasketing X063/r thick-and compressed to approximately - ; .. 13O0v.-psi.^. 'At room- temperature*.'- 110 psi air; was applied, to-the interfaee^withr moderate, leakage noted! ;2.^.-' Compression was- increased to 2000 psi and. 110 psi air .--reapplied.- to: the- interface- with.no leakage noted- 2.3 ' .Sample-was-subject to-. 450F:,.for three hours and re' tested for leakage.-wt$:..no`leaks, developing.. . 3.. The filler in. this material was found, to be- NBR.- .After .subjecting sample- to '450F. no- filler burnout could' be de tected. . - '. Tw\- .. 4.. m test-for. reaction with SEC! 634 oil was made-because oil sample--was not available. Conversation with Mobil Oil suggests- no- adverse reaction may. be expected if material used in!air heater lube-system. - 5. Maximum temperature X pressure published by Garloc. =: 700y000. Actual.test was 28.6$ -over this figure with no adverse results noted-,.'-. ... ; "Committed to Excellence'* Distribution ( Non-Asbestos Gasketing for Air Heaters ( May 26, 1981 6. Material hard and brittle after testing and must be removed by chiseling. Recommendation: Based on test data and Mobil oil information, .1 recommend that this material be used as flange gasketing ' anywhere in the air heater lube system where asbestos is still being used, providing 2000 psi minimum compression is main tained on flanged connections. When this change is implemented, there should be no asbestos- material being used on the Rothemuhle air heaters with the^- exception of the sootblower lines. - GBStrl Pile (3) G. B. Schumacher