{"operation":"document","citation":"PI-71-0115","title":"Charles Wheatley Company — Pipeline Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"1971-07-09","effective_on":null,"summary":"PI-71-0115 response to Charles Wheatley Company concerning 195.426.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-71-0115.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-71-0115.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-71-0115","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1971/g71-07-09_Wheatly-Moore_195.426-nlmx.pdf","body":"<<<PAGE 1>>>\n\nPI-71-0115\nMr. Del Moore, Chief Engineer\nCharles Wheatley Company\n911 South Main Street\nTulsa, Oklahoma 74119\nDear Mr. Moore:\nThis refers to your letter of June 7, 1971 and our reply of June 18, 1971, concerning certain aspects of the liquid\npipeline regulations, particularly Section 195.426.\nThe main purpose of Section 195.426 is to minimize the opening of end closures on scraper and sphere facilities\nwhile the facility is subjected to pressure, and thereby reducing the possibility of injury to personnel removing the\nend closure. There are two requirements contained in Section 195.426. One requirement is that the barrel in which\nthe scraper or sphere is inserted or removed contains a relief device, such as a blowoff, which can be used to relieve\npressure on the barrel prior to opening the end closure on the barrel. The second requirement is that the end closure\nitself must contain a device to either prevent the closure from being removed prior to release of the pressure on the\nbarrel or to indicate that pressure still remains on the barrel. The \"lock and bleed\" device on Yale closures and the\n\"pressure warning device\" on Tube Turn closures satisfy the second requirement mentioned above.\nYou raised the question in your June 7, 1971 letter, as to whether the above mentioned devices would satisfy the\n\"relief valve feature\" of the regulation. Section 195.426 contains the term \"relief device\" but not the term \"relief\nvalve.\" You might have been thinking of a device that would relieve pressure in the barrel automatically if it\nbecome as high as the preset valve on the relief valve. Section 195.426 contains no such requirement.\nThe information that you recently provided to this department, revealed that the scraper and sphere facilities\ndesigned by your firm include a blowoff device, as previously mentioned, in addition to the \"lock and bleed\"\ndevice. This indicates that the Charles Wheatly Company is fulfilling the requirements of Section 195.426 in\ndesign of scraper and sphere equipment.\nSincerely yours,\nMac E. Rogers\nDirector\nBureau of Railroad Safety\n\n<<<PAGE 2>>>\n\nUnited States Government\nDepartment of Transportation\nFederal Railroad Administration\nMemorandum\nJune 23, 1971\nTO: Joseph C. Caldwell, Acting Director\nOffice of Pipeline Safety\nFROM: Director,\nBureau of Railroad Safety\nSUBJECT: Request for Technical Advice,\nSection 195.426\nTransportation of Liquids by Pipeline\nAttached is a copy of a letter recently received from Mr. Del Moore, Chief Engineer of the Charles\nWheatley Company which manufactures various fittings for pipelines. The fourth paragraph of the letter\nraises a question as to the meaning of Section 195.426 of the regulations. Your advice on the question\nraised by Mr. Moore would be greatly appreciated.\nMac E. Rogers\n\n<<<PAGE 3>>>\n\nCharles Wheatley Company\n911 South Main Street\nTulsa, Oklahoma 74119\nJune 7, 1971\nDepartment of Transportation\nFederal Railroad Administration\nWashington D.C. 20691\nAttention: Mr. Mac E. Rogers :\nDirector\nBureau of Railroad Safety\nDear Mr. Rogers:\nyour cooperation.\nWe have received the Department of Transportation Specifications and wish to thank you and your Office for\nIn discussing the D.O.T. Specifications within our own company, we were wondering about several points. As\nstated under 195.1, page two, these specifications apply only to pipelines transporting hazardous liquids and therefore\nare not applicable to \"natural and artificial gas\" as your document goes on to say that these gaseous materials are\ncovered by the Natural Gas Pipeline Safety Act of 1968, reference portions 172 and 173.\nCould we again impose upon you in that we would appreciate two copies of the Natural Gas Pipeline Safety Act\nalso?\nOne other question, sub-paragraph 105.426, page 10, regarding the relief valve feature on scraper or sphere\ntraps. We sometimes manufacture traps and were wondering if this requirement can be satisfied with the built-in safety\nfeature furnished on closures, for instance, Yale Manufacturing calls theirs \"Lock and Bleed’, Tube Turn refers to theirs\nas \"Pressure Warning Device\". If these do not meet the requirements of 195.426, could you then advise what type of\nrelief feature is meant by this paragraph.\nWe appreciate your help and will await your reply.\nYours very truly,\nCHARLES WHEATLEY COMPANY\nDel Moore\nChief Engineer\n\n<<<PAGE 4>>>\n\nJune 22, 1971\nMr. Del Moore, Chief Engineer\nCharles Wheatley Company\n911 South Main Street\nTulsa, Oklahoma 74119\nDear Mr. Moore:\nThis refers to your letter of June 7, 1971, concerning the gas and liquid pipeline safety regulations.\nTwo copies of the Natural gas Pipeline Safety Act of 1968, and the regulations promulgated under provisions of the Act,\nhave been sent to you under separate cover.\nWith regard to an interpretation of section 195.426 of the liquid pipeline regulations, the matter will be studied by my\nstaff. Upon completion of the study you will be advised of our views on the scraper trap relief feature.\nSincerely yours,\nJ.U. Chrisman\nMac E. Rogers\nDirector\nBureau of Railroad Safety","truncated":false,"body_characters":5071}