The Gas Service Company — Pipeline Safety Interpretation

Page 1October 12, 1973 Mr. A. C. Singer Vice President of Operations The Gas Service Company 700 Scarritt Building Kansas City, MO 64142 Dear Mr. Singer: In your letter of September 24, 1973, you requested an interpretation of Paragraph 192.357(d), Title 49, Code of Federal Regulations, which reads as follows: "Each regulator that might release gas in its operation must be vented to the outside atmosphere." Your specific question was whether the above paragraph requires an outside vent on service regulators which are installed inside, and which are not equipped with relief facilities. Since they do not release gas in their operation, you have considered such regulators as constituting a closed system. Your interpretation is correct. Since there is no release of gas in the operation of such a service regulator, that regulator need not be vented to the outside atmosphere. If we may assist further, please let us know. Sincerely, \signed\ Joseph C. Caldwell Director Office of Pipeline Safety dal\192\357\73-10-12 1#