Pipeline Safety Interpretation PI-78-0101

Page 1PI-78-0101 April 11, 1978 Mr. Shields E. Clark III West Coast Engineering Corporation 7001 Fourth Street North St. Petersburg, Florida 33702 Dear Mr. Clark: This acknowledges your letter of March 6, 1978, notifying us in accordance with 49 CFR 195.6 of the proposed trans- portation of anhydrous ammonia by pipeline between Tampa and Bartow, Florida. We will review the matter and, if necessary, contact you for additional information. Based on the date we received your letter, the proposed transportation may begin on June 14, 1978, unless we notify you before that time that we have determined the proposed transportation would be unduly hazardous. Sincerely, SIGNED Cesar DeLeon Acting Director Office of Pipeline Safety Operations#

Page 2West Coast Engineering Corporation 7001 Fourth Street North St. Petersburg, Florida 33702 March 6, 1978 File # 3093 Materials Transportation Bureau Office of Pipeline Safety & Operation Acting Director Code DMT-20 2100 — 2nd Street S.W. Washington, D.C. 20590 Dear Sir: This is to advise that the Tampa Pipeline Corporation has proposed to install a 6" welded steel anhydrous ammonia pipeline from the Port in the City of Tampa to the phosphate mines in Bartow. The carrier will transport anhydrous ammonia, agricultural grade, chemical name NH3 listed as a non-flamable gas in part 173 of title 49 of the code of Federal Regulations Revised as of December 31, 1976. The carrier pipe specifications are as follows. Carrier Pipe Size -6 5/8" O.D. Line Pipe Grade -X-42 Seamless Tensil Strength -42,000 p.s.i. Thickness -0.25" wall Protective Coating -XTRU Coating Thickness 60 mil Allowable Working Pressure -2.210 p.s.i. Actual Working Pressure -850 p.s.i. Internal Pressure at Minimum Yield -3,170 p.s.i Safety Factor Based on Minimum Yield -10.5 The pipe is to be purchased from U.S. Steel Corporation. The coating is by Standard Pipe Protection Co., a Div. of General Steel Industries. It is hoped that this information is satisfactory. If further information is required, please do not hesitate to call. Very truly yours, Shields E. Clark III, P.E. Fla. Reg'n. No. 16563#