Section 420. Lap-seam crack

Latest version.

The shell of a pressure vessel, in which a lapseam crack is discovered along a longitudinal riveted joint, shall be shut down immediately. If the equipment is not more than 15 years of age, a complete new course of the original thickness may be installed at the discretion of the inspector and after approval by the chief inspector. Patching is prohibited.

Historical Notes

Derived from VR425-01-75 § 4.4, eff. July 1, 1974; amended, eff. November 1, 1978; July 1, 1991; September 1, 1993.

Statutory Authority

§§ 40.1-22 and 40.1-51.5 et seq. of the Code of Virginia.

                    
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