Overhaul needs on API6FA Valves
Overhaul needs on API6FA Valves
(OP)
Currently I am working on a mantenance program for an export oil pipeline.
In discussions with suppliers of valves (16" side monted on/of ball valve, type with trunnion mounted ball valve, direct action), there is no clear answer to if there should be a defined interval for overhaul of these valves.
There is only a description of periodical functional tests of the valves.
Does anyone know if there is a requirement in API or equial for such overhaul/classing interval for such valve?
Regards KjetilK
In discussions with suppliers of valves (16" side monted on/of ball valve, type with trunnion mounted ball valve, direct action), there is no clear answer to if there should be a defined interval for overhaul of these valves.
There is only a description of periodical functional tests of the valves.
Does anyone know if there is a requirement in API or equial for such overhaul/classing interval for such valve?
Regards KjetilK





RE: Overhaul needs on API6FA Valves
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"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Overhaul needs on API6FA Valves
KjetilK
RE: Overhaul needs on API6FA Valves
Partially Open = erosion, cutting, wash out of lubrication, sand trapped in seals, ring wear.
Heat = deterioration of elastomerics
Water + sulfur + oil = possibility of sulfuric acids and internal corrosion.
If the above is assumed to have minimum effect, check yearly. Moderate, check every 6 months. If severe, check every 3 months.
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"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/