Technical analysis to verify design conditions can be increased.
Field visits to check out the flanges which were discovered to be the limiting components to the design conditions of 460ºF and 165psig. It was discovered that it was not feasible to rerate the FL202 to a higher design condition without major vessel modifications and replacements.
Proposed Solutions:
Stop further related rerate design analysis work on FL 202 and consider one of the following options:
(1) Purchase a new filter to the new design conditions.
(2) Replace the existing filter with a new head, body flanges, and partial of the shell to reduce the risk of installation misalignment. It was highlighted that a construction risk exists due to no fabrication information of the existing filter internal attachment inside the vessel.
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