{"operation":"document","citation":"PI-92-0104","title":"Indiana Gas Company — Pipeline Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"1992-06-29","effective_on":null,"summary":"PI-92-0104 response to Indiana Gas Company concerning 192.197.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-92-0104.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-92-0104.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-92-0104","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1992/g92_06_29_BOES_192.197_nlmx.pdf","body":"<<<PAGE 1>>>\n\nPI-92-0104\nJune 29, 1992\nMr. Ronald J. Boes\nManager of Gas Systems\nStandards & Procedures\nIndiana Gas Company\n1630 North Meridian Street\nIndianapolis, IN 46202-1496\nDear Mr. Boes:\nThis responds to your letter of April 17, 1992, to Mr. Richard Sanders of the Transportation\nSafety Institute in which you ask if the 3/8\" external line on the Sprague CL34-2 IMR regulator is\na \"static or control line\" as set forth in Section 192.197.\nThe \"static or control line\" in Section 192.197(a)(6) is a line that runs from the regulator to the\ndownstream side of the regulator used to communicate that pressure to the regulator. The 3/8\"\nexternal tubing on the Sprague CL34-2 IMR is not a static or control line, but a supply line\nsupplying high pressure gas from the inlet side of the regulator to the pilot to establish the set\npoint; i.e., the outlet pressure of the regulator.\nI trust that this has adequately responded to your question.\nSincerely,\nCesar De Leon\nDirector\nRegulatory Programs\nOffice of Pipeline Safety\n\n<<<PAGE 2>>>\n\nMr. Richard E. Sanders\nManager, Pipeline Safety Division\nTransportation safety institute\n6500 S. MacArthur Blvd.\nOklahoma City, OK 73125\nDear Mr. Sanders:\nI am seeking information regarding the appropriateness of using the Sprague CL34-2IMR\n(Internal Monitor) regulator on meter sets without any “other pressure limiting device”.\nMy deliemma is an interpretation of CFR 192.197(6). “A self-contained service regulator with\nno external static or control lines” and a lack of definition of “external static or contol lines”.\nThe manufacturer of the CL34-2IMR insists, both in their printed literature and verbally, that\ntheir unit complies with 192.197. However, the unit (picture attached) does have an external\nline, 3/8” tubing that loads or controls the pilot regulator.\nCFT 192.3 Definitions does not include a definition of “static or control lines’ nor can I locate\nany other definition for control lines within CFR 192. 192.203 gives specific guidelines as to the\ndesign of control lines without providing a definition. The “GPTC Guide of Gas Transmission\nand Distribution Piping Systems” indicates “Control piping is pipe, hydraulically operated\ncontrol apparatus”.\nIf I accept the definition from the GPTC Guide, the regulator in question could not be used on a\nmeter set without some form of external relief. The manufacturer’s assertion, I believe, is based\non the assumption that “control line” refers to a connection downstream.\nI would appreciate your opinion and /or any knowledge you might have on a past ruling or\ninterpretation by DOT that shed light on this subject.\nSincerely,\nRonald J. Boes\nManager of Gas System\nStandards & Procedures\nIndiana Gas Company,\nIndianapolis, Indiana\n(317) 321-0575","truncated":false,"body_characters":2752}