Section 245.532. Cathodic protection systems

(a) When required for corrosion prevention, on new, reconstructed or relocated tanks or the replacement of the tank bottom the cathodic protection system shall consist of one or more of the following:

(1) Sacrificial anodes and dielectrical coating.

(2) Impressed current.

(3) Another method specified in an appropriate Nationally recognized association code of practice such as API 651 or associations such as NACE.

(b) Cathodic protection systems shall be designed by a corrosion expert and maintained to provide protection against external corrosion for the operational life of the tank system.

(c) Each cathodic protection system shall have an access point which enables the owner or operator to check on the adequacy of cathodic protection. The cathodic protection systems shall be monitored periodically as determined by the corrosion system design.

(d) Tank and piping connections of two dissimilar metals which create a galvanic cell are prohibited.

Notation

Cross References

This section cited in 25 Pa. Code § 245.521 (relating to performance standards for aboveground storage tanks); and 25 Pa. Code § 245.552 (relating to in-service inspections).