April 4 - April 10, 2011
Under what conditions should stainless steel be painted in the oil and gas industry?
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Ahmed Abd Ellatif of ENPC on
June 10, 2013:
Stainless should be painted to protect it from corrosion in the following conditions: zinc attack (LNG process), and exposure to chlorides with high humidity near coastal areas.
Aldrin Cordovez of Kuwait Oil Company on
April 11, 2011:
Stainless steel shall be coated when it is exposed to soil under buried conditions, also when exposed to marine environment,connected to or in contact with metals of different potentials. It is also coated for warning and identification purposes.
Guru Sankar of Sathya Hitec Solutions on
April 8, 2011:
Stainless steel coating is compulsory when the surface is exposed to corrosive atmospheres of sulphide, fluoride, chloride or marine atmosphere conditions. Stainless steel also needs to be coated when in direct contact with cupronickel, brass, bronze or other noble alloys of metals.
José Avendaño of Testers y Multimetros 2011 CA on
April 6, 2011:
Stainless steel can also be painted for identification purposes, signaling, and safety.
R.K. Singh of Chemdale Coatings Pvt Ltd on
April 6, 2011:
It can be painted to provide cathodic protection of stainless steel pipe simply with a coat of zinc-rich epoxy primer.
Bill Jordan of MTM Metalizing on
April 5, 2011:
Thermally sprayed Aluminum (TSA) is often applied over stainless steel when stress corrosion cracking is a concern, especially at temperatures above ambient.
Victor Nouel of Enosa on
April 4, 2011:
Buried stainless steel pipes should be coated (tape or paint) when they're electrically continuous with carbon steel and in the same pipeline corridor, not to protect the stainless steel but to decrease the bare surface of the stainless steel that would act as a cathode in relation to the carbon steel pipes. Recommendations are not for a sophisticated coating but any normal coating for buried pipe or normal tape.
Maher Saud Khashram of Saudi Aramco on
April 2, 2011:
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-Painting is mandatory if it is to be insulated, regardless the process temperature. Otherwise, painting is optional, depending on cost and risk ranks for bare stainless steel piping/equipment in offshore and marine environment opertaing near 50-60 C.
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