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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Interpretation Response #PI-78-0101

Below is the interpretation response detail and a list of regulations sections applicable to this response.

Interpretation Response Details

Response Publish Date:

Company Name:

Individual Name:

Location State: FL Country: US

View the Interpretation Document

Response text:

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
West 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

Regulation Sections

Section Subject
195.6 Unusually Sensitive Areas (USAs)