Code of Maryland Regulations
Title 09 - MARYLAND DEPARTMENT OF LABOR
Subtitle 12 - DIVISION OF LABOR AND INDUSTRY
Chapter 09.12.01 - Board of Boiler Rules
09.12.01.18 - Lap-Seam Crack
09.12.01.18. Lap-Seam Crack
A. If a boiler or pressure vessel has a lap-seam crack along a longitudinal riveted joint, use of the shell or drum shall be discontinued immediately.
B. If the boiler is not more than 15 years old, a complete new course of the original thickness may be installed upon:
(1) Recommendation by the inspector; and
(2) Approval of the chief boiler inspector.
C. Patching a lap seam crack is prohibited.(Regulations .18 adopted effective June 1, 1989 (16:10 Md. R. 1106))