A steam utility shall maintain records documenting inspections, maintenance, tests and all other matters required under this chapter for at least 5 years. Records shall be kept on file at the steam utility's offices and be readily accessible to Commission staff.
52 Pa. Code § 61.49
The provisions of this § 61.49 issued under the Public Utility Code, 66 Pa.C.S. § § 501 and 1501.