Each utility shall adopt written operation and maintenance procedures for its electric plant in order to determine the necessity for replacement and repair. The frequency of the various procedures shall be based on the utility's experience and accepted good practice. Each utility shall keep sufficient records to give evidence of compliance with its operation and maintenance procedures.

Authority: Public Utilities Article, §§2-113, 2-121, 5-101, 5-303, and 7-213, Annotated Code of Maryland

Effective date: May 22, 1942 (Order No. 38330)

Chapter revised effective May 18, 1960 (Order No. 54348)

Chapter revised effective June 1, 1965 (Order No. 55819)

Regulation .02 amended effective January 23, 1981 (8:2 Md. R. 117); March 27, 2006 (33:6 Md. R. 580); June 9, 2008 (35:8 Md. R. 808); September 21, 2009 (36:19 Md. R. 1438); May 28, 2012 (39:10 Md. R. 661); October 8, 2018 (45:20 Md. R. 920); March 20, 2023 (50:5 Md. R. 183); August 21, 2023 (50:16 Md. R. 728)

Regulation .02K, L amended effective July 7, 2025 (52:13 Md. R. 657)

Regulation .02M—O adopted effective July 7, 2025 (52:13 Md. R. 657)

Regulation .04 amended effective April 15, 2002 (29:7 Md. R. 622); May 28, 2012 (39:10 Md. R. 661)

Regulation .05 adopted effective March 27, 2006 (33:6 Md. R. 580)

Regulation .05 amended effective June 9, 2008 (35:8 Md. R. 808)

Regulation .06 adopted effective September 21, 2009 (36:19 Md. R. 1438)

Regulation .06D adopted effective December 2, 2019 (46:24 Md. R. 1104)