34 Pa. Code § 14a.102
Pumps shall be of a fixed type substantially anchored or attached to a noncombustible base. Pumps shall be designed and equipped for use with flammable or combustible liquids and constructed so that no part of the system will be subjected to pressures above its allowable working pressure. Pumps, except those of submergible design, installed outside of buildings, shall be located not less than 10 feet from lines of adjoining property and not less than 5 feet from any building opening. Pumps shall be protected against physical damage. Exception: Pumps, which are an integral part of a tank vehicle which is operated and maintained in accordance with 67 Pa. Code Chapter 403 (relating to hazardous substances), may be used for handling crude oil in crude-producing areas where electrical power is impracticable and under emergency conditions such as leaking tanks, or for tank maintenance purposes. These pumps shall be provided with automatic means to prevent pressure in excess of the design working pressure of the accessories, piping and hose.
34 Pa. Code § 14a.102