Henningson, Durham & Richardson — Pipeline Safety Interpretation

Page 1July 17, 1972 Mr. Allan E. Anderson, P.E. Henningson, Durham & Richardson 8404 Indian Hills Drive Omaha, Nebraska 68114 Dear Mr. Anderson: This is in response to your letter date July 5, 1972, regarding requirements for producing or maintaining maps. Your specific question asked whether there was any requirements for producing or maintaining maps of gas transmission or distribution systems. Section 192.603(b) requires that each operator shall establish a written operating and maintenance plan meeting the requirements of the Federal gas safety regulations and keep records necessary to administer the plan. If an operator requires maps as a record to properly administer the operating and maintenance plan to meet the Federal safety requirements, then these maps must be maintained by the operators. We trust that this has answered your specific question. If we can be of further assistance, please let us know. Sincerely, Joseph C. Caldwell Director Office of Pipeline Safety dal\192\603\72-07-17 1#

Page 28404 Indian Hills Drive Omaha, Nebraska 68114 July 5, 1972 Office of Pipeline Safety Department of Transportation Washington, D.C. 20590 Gentlemen: Your DOT 192 requires certain forms of test records to be generated and maintained above pipeline test pressures and installation. However, there seems to be absolutely no requirements for producing or maintaining maps of gas transmission or distribution systems. Is this correct, or did I overlook something? Sincerely, HENNINGSON, DURHAM & RICHARDSON Allan E. Anderson, P.E. dal\192\603\72-07-17 2#

Page 3DRAFT C. DeLeon 7/11/72 Dear Mr. Anderson: This is in response to your letter dated July 5, 1972, regarding requirements for producing or maintaining maps. Your specific question asked whether there was any requirements for producing or maintaining maps of gas transmission or distribution systems. Section 192.603 (b) requires that each operator shall establish a written operating and maintenance plan meeting the requirements of the Federal gas safety regulations and keep records necessary to administer the plan. If an operator requires maps as a record to properly administer the operating and maintenance plan to meet the Federal safety requirements, then these maps must be maintained by the operators. We trust that this has answered your specific question. If we can be of further service, please let us know. Sincerely, Joseph C. Caldwell Director Office of Pipeline Safety dal\192\603\72-07-17 3#