Oklahoma Administrative Code
Title 380 - Department of Labor
Chapter 25 - Boiler and Pressure Vessel Rules
Subchapter 7 - General Requirements
Section 380:25-7-4 - Removal of covering to permit inspection

If the boiler or pressure vessel is jacketed so that the longitudinal seams of shells, drums or domes cannot be seen, sufficient jacketing, setting wall, or other form of casing or housing shall be removed, if evidence warrants, to permit reasonable inspection of the seams and other areas necessary to determine the condition and safety of the boiler or pressure vessel, provided such information cannot be determined by other means.