Arizona Corporation Commission — Pipeline Safety Interpretation

Page 1PI-99-0107 U.S. Department Of Transportation Research and Special Programs Administration 400 Seventh Street, S.W. Washington, D.C. 20590 Dec. 17, 1999 Mr. Terry Fronterhouse Chief of Pipeline Safety Pipeline Safety Section Arizona Corporation Commission 1200 W. Washington Street Phoenix, AZ 85007-2996 Dear Mr. Fronterhouse: This responds to your letter of October 8, 1999, concerning a request by the City of Phoenix Aviation Department for a finding under 49 CFR 195.120(b)(7). This regulation permits us to find that particular piping is impracticable to design and construct to accommodate the passage of instrumented internal inspection devices. The request involves a 12-inch hydrant piping system that is under construction around Terminal 4, N-1 Concourse, at the Sky Harbor International Airport. Although you recommended that we grant the request, we believe the request is unnecessary. Fuel distribution systems on airport grounds are akin to in-plant piping systems that are excluded from Part 195 under § 195. 1 (b)(7) or terminal facilities that are excluded under§195.1(b)(8). Because of the similarity, we do not think such systems come under the safety standards in 49 CFR Part 195. Also, please note that requests for findings under § 195.120(b)(7) are not handled like waiver requests. Under our procedures in 49 CFR 190.9, after receiving a state agency recommendation on a request for finding involving an intrastate pipeline, we have only 10 business days to change the recommendation or else it becomes the final decision. Sincerely, Richard Felder Associate Administrator for Pipeline Safety#