Pennsylvania Code
Title 34 - LABOR AND INDUSTRY
Part I - Department of Labor and Industry
Chapter 14a - STORAGE AND USE OF FLAMMABLE AND COMBUSTIBLE LIQUIDS
Subchapter B - PARTICULAR ESTABLISHMENTS AND USES
HEATING AND POWER DEVICES
Section 14a.161 - General provisions

(a) Storage. Flammable or combustible liquids supplying heating or power devices by means of piping shall be stored in accordance with §§ 14a.1-14a.11, 14a.21-14a.26, 14a.31-14a.38, 14a.51-14a.58 and 14a.131 (relating to outside and aboveground storage; underground storage; inside building storage; piping, valves, and fittings; and centralized oil distribution systems).

(b) Approval. Approval shall not be required for domestic fuel oil heating systems where the capacity of any individual supply tank does not exceed 3,000 gallons.

(c) Materials. Materials for piping (including vents and fills), valves and fittings used with supply tanks, shall conform with § 14a.53 (relating to materials). The aboveground use of any material, such as plastic, that softens on fire exposure is prohibited.

(d) Where the installation of a supply tank is made in such a manner that the supply piping drops below the top of the tank, adequate provisions to prevent siphoning shall be provided.