31 Pa. Code § 130.2
The following words and terms, when used in this chapter, have the following meanings unless the context clearly indicates otherwise:
Bureau-The Bureau of Regulation of Rates and Policies of the Department.
Casualty and Surety Rate Act-The Casualty and Surety Rate Regulatory Act (40 P. S. §§ 1181-1199).
Commissioner-The Insurance Commissioner of the Commonwealth.
Department-The Insurance Department of the Commonwealth.
Director-The Director of the Bureau.
Fire and Marine Rate Act-The Fire, Marine and Inland Marine Rate Regulatory Act (40 P. S. §§ 1221-1238).
Insurer-An insurance company, association or exchange authorized to transact insurance business in this Commonwealth which files its rates independently under the Fire and Marine Rate Act or the Casualty and Surety Rate Act, or both; a member or subscriber of a rating organization on whose behalf rate filings are made under the aforesaid acts by a rating organization; or a rating organization itself licensed under either or both of the aforesaid acts.
31 Pa. Code § 130.2