Document oD8DREnjDGpGJqn5B9EDDELpo
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SAFETY CONSIDERATIONS:
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This Job Is the result of a safety signal report to eliminate excessive*
-venting of VcL to air In order to work on D/P cells. This Installation will prevent ^
the presence of VcL In leads or D/P cells under normal circumstances. If N2 and
\30# steam are lost, leads will be totally self-cleaning upon resumption of H2 and steam.
If either one Is lost andbiiu tkhI Iet oVLtHh6e.1r uW vt*il* itfyc; r1 emains available the-- r---e-----a-- ding^ w...i.l.l r mv ain
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valid. For example - in the event of loss of N2 vapored VcL will act as blowback.^ In*
the event of loss of steam the N2 blowback will still be functional as In any other
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installation. Close-coupled cutoff valves are provided on leads at D/P to prevent un-
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necessary trips to top of tank since there are not any ladders thereon^
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UCC 102387