- (a) All pressure vessels which are to contain substances having a corrosive action upon the material of which the vessel is constructed, or those subjected to erosion or mechanical abrasion, shall be designed for the pressure they are to carry, and the thickness of all parts subject to corrosion, erosion, or abrasion should be increased by a uniform amount to safeguard against early rejection.
(b)
- (1) Where a vessel goes into corrosive service without previous service experience, it is recommended that service inspections be made at frequent intervals until the nature and rate of corrosion in service can be definitely established.
- (2) The data thus secured should determine the subsequent intervals between service inspections and the probable safe operating life of the vessel.