1. GENERAL 1.1 Scope This Specification outlines the general requirements for the protection against corrosion of the external surfaces of ferrous metal and low alloy (less than 12% Cr) steels using protective coating systems in NSRP(Nghi Son Refinery and Petrochemical) Complex Project. This Specification also addresses the requirements for protection against corrosion of insulated and un-insulated austenitic stainless steel from corrosion. 1.1.1 The Nghi Son Refinery and Petrochemical Equipment to be located in Thanh Hoa province of North Vietnam, is classed (for the purpose of this project Specification) as having a climate of ‘severe tropical industrial/marine’ atmosphere. 1.1.2 The protective coating systems specified include surface preparation, paint selection, paint application method, inspection requirement and acceptable minimum dried film thicknesses. 1.1.3 Equipment items covered by this Specification include above and under ground piping, equipment, un-galvanised structural steelwork, furnace plating, storage tanks and other miscellaneous unprotected steel items. 1.1.4 This Specification excludes; protective coatings applied specifically for transportation and shipment. 1.1.5 This Specification does not specify high temperature resistant painting systems for operating temperatures above 540C, nor temperature indicating paints for refractory lined Equipment items.
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