MC-3: Steam Locomotive Inspection, Maintenance, and Operating ...

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33. Welded repairs and alterations.(a) Unstayed portions of the boiler containing alloy steel or carbon steel with a carbon content over0.25 percent.Prior to welding on unstayed portions of the boiler, the steam locomotive owner and/or operatorshall submit a written request for approval to the government agency having jurisdiction in thelocation where the work is to be done. If the approval is granted, the steam locomotive ownerand/or operator shall perform any welding to unstayed portions of the boiler in accordance with anaccepted national standard for boiler repairs. The steam locomotive owner and/or operator shallsatisfy reporting requirements in Section 20 at this time.(b) Unstayed portions of the boiler containing carbon steel not exceeding 0.25 percent carbon.The steam locomotive owner and/or operator shall perform any welding to unstayed portions of theboiler in accordance with an accepted national standard for boiler repairs. The steam locomotiveowner and/or operator shall satisfy reporting requirements in Section 20 at this time.(c ) Wastage.The steam locomotive owner and/or operator shall submit a written request for approval to thegovernment agency having jurisdiction in the location where the work is to be done beforeperforming weld build up on wasted areas of unstayed surfaces of the boiler that exceed a total of100 square inches or the smaller of 25 percent of minimum required wall thickness or 1/2 inch.Wasted sheets shall not be repaired by weld build up if the wasted sheet has been reduced to lessthan 60 percent of the minimum required thickness as required by this standard.(d) Flush patches.The steam locomotive owner and/or operator shall submit a written request for approval to thegovernment agency having jurisdiction in the location where the work is to be done for theinstallation of flush patches of any size on unstayed portions of the boiler.(e) Stayed portions of the boiler.The steam locomotive owner and/or operator shall perform welded repairs or alterations on stayedportions of the boiler in accordance with established railway practices, or an accepted nationalstandard for boiler repairs. The steam locomotive owner and/or operator shall satisfy the reportingrequirements in Section 20 at this time.34. Riveted repairs and alterations.(a) Alterations to unstayed portions of the boiler.Prior to making riveted alterations on unstayed portions of the boiler, the steam locomotive ownerand/or operator shall submit a written request for approval to the government agency havingjurisdiction in the location where the work is to be done. If approval is granted, the steamlocomotive owner and/or operator shall perform any riveting to unstayed portions of the boiler inaccordance with established railway practices or an accepted national standard for boiler repairs.The steam locomotive owner and/or operator shall satisfy reporting requirements in Section 20 atthis time.
(b) Repairs to unstayed portions of the boiler.The steam locomotive owner and/or operator shall perform any riveted repairs to unstayed portionsof the boiler in accordance with established railway practices, or an accepted national standard forboiler repairs. The steam locomotive owner and/or operator shall satisfy reporting requirements inSection 20 at this time.(c) Repairs to stayed portions of the boiler.The steam locomotive owner and/or operator shall perform riveted repairs or alterations on stayedportions of the boiler in accordance with established railway practices or an accepted nationalstandard for boiler repairs. The steam locomotive owner and/or operator shall satisfy reportingrequirements in Section 20 at this time.PRESSURE TESTING OF BOILERS35. Pressure testing.The temperature of the steam locomotive boiler shall be raised to at least 70 deg. F any timehydrostatic pressure is applied to the boiler.36. Hydrostatic testing of boilers.(a) Time of test.The locomotive owner and/or operator shall hydrostatically test every boiler at the followingtimes:(i) During the 1472 service day inspection, and at every annual inspection thereafter;(ii) After making any alteration to the boiler;(iii) After installing a flush patch on an unstayed portion of the boiler; and(iv) After any riveting on an unstayed portion of the boiler.(b) Method of testing.The metal temperature of the boiler shall be between 70 degrees Fahrenheit and 120 degreesFahrenheit each time it is subjected to any hydrostatic pressure. Hydrostatic testing requiredby these rules shall be conducted at least 25 percent above the MAWP.(c) Internal inspection.An internal inspection of the boiler shall be conducted following any hydrostatic test where thepressure exceeds MAWP.37. Steam test following repairs or alterations.Upon completion of any repair or alteration, the locomotive owner and/or operator shall conduct asteam test of the boiler with steam pressure raised to between 95 percent and 100 percent of theMAWP. At this time, the boiler shall be inspected to ensure that it is in a safe and suitablecondition for service.
Page 1 and 2: RAC Circular # MC 3STEAM LOCOMOTIVE
Page 3 and 4: 49. Setting of safety relief valves
Page 5 and 6: Wheels and Tires112. Wheels and tir
Page 7 and 8: Documentation providing evidence fo
Page 9 and 10: e a railway or a person or persons
Page 11 and 12: (d) Non-complying conditions develo
Page 13 and 14: (b) Notification.Any affected railw
Page 15 and 16: Subpart B - Boilers And Appurtenanc
Page 17: 31. Flues to be removed.(a) Inspect
Page 21 and 22: 40. Time and method of staybolt tes
Page 23 and 24: (b) Numbers after January 10, 1912.
Page 25 and 26: 54. Testing and maintenance.(a) Tes
Page 27 and 28: 61. Arch tubes, water bar tubes, ci
Page 29 and 30: (ii) The air compressor or compress
Page 31 and 32: permanently from service where NDE
Page 33 and 34: (c) Brake pipes.Steam locomotive br
Page 35 and 36: 85. Audible warning device.(a) Gene
Page 37 and 38: (b) Safety bars and chains generall
Page 39 and 40: 97. Crank pins.(a) General provisio
Page 41 and 42: (c) A box containing foreign matter
Page 43 and 44: (ii) Tender center sill that is bro
Page 45 and 46: WHEELS AND TIRES112. Wheels and tir
Page 47 and 48: (b) Flat spots.Wheels and tires may
Page 49 and 50: (c) Top of tender.116. Oil tanks.To
Page 51 and 52: Annual Inspection Requirements; Sec
Page 55: FORM 4

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