TUBBING CRUNCHES (subsea control valves hydraulic system)
TUBBING CRUNCHES (subsea control valves hydraulic system)
(OP)
Dear sirs,
I´m facing a maintenance issue related tubing crunches(subsea control valves hydraulic system tubing) and would appreciate your help for identify the main cause and solve it appling engineering best practices.
Briefly: Leaking was observed in OD 1/2" hydraulic tubing, after analyses micro-crunches was found, apparently initiate by surface exthernal corrosion.
Aditional information:
Material order inform ASTM A312TP316L
Material analysis found: %C:0,017, %Mn:1,59, %Si:0,49, %Cr:16,75,%Mo:2,18, %S:0,001, %P:0,016,%Ni:9,63.
Down hole 7500 PSI
I´m planning to replace all tubing (down hole and the others) as soon is possible for attribute reliability , cause it I need to identify the correct one. (please inform standards if possible).
Thanks in advance,
I´m facing a maintenance issue related tubing crunches(subsea control valves hydraulic system tubing) and would appreciate your help for identify the main cause and solve it appling engineering best practices.
Briefly: Leaking was observed in OD 1/2" hydraulic tubing, after analyses micro-crunches was found, apparently initiate by surface exthernal corrosion.
Aditional information:
Material order inform ASTM A312TP316L
Material analysis found: %C:0,017, %Mn:1,59, %Si:0,49, %Cr:16,75,%Mo:2,18, %S:0,001, %P:0,016,%Ni:9,63.
Down hole 7500 PSI
I´m planning to replace all tubing (down hole and the others) as soon is possible for attribute reliability , cause it I need to identify the correct one. (please inform standards if possible).
Thanks in advance,
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