WebOct 18, 2016 · Hot Bolting is the practice of removing and replacing or freeing and re-tightening bolts on live operating piping and equipment while the system is pressurized. It is potentially hazardous and the utmost caution needs to be exercised when planning and carrying it out. The hot bolting tools designed by Irgens Engineering AS aim to establish a … WebFlange Bolt Tightening Procedure Before actual tightening starts, the flange, gasket, and bolts/nuts need to be observed as below: Flange checking points before flange bolt up Leakage through a flanged joint is prevented as gasket material flows inside the flange surface imperfections and seals them.
Hot Bolting Procedure PDF Nut (Hardware) Screw - Scribd
WebDec 11, 2014 · 2 Procedures 2.1 Hot Bolting Hot Bolting allows for corroding studs and nuts to be removed as part of preventative maintenance while the line is in service. A risk assessment shall be performed prior to Hot Bolting to confirm the flange will not leak or fail during the procedure. WebThe practice of hot bolting will only be allowed for those weld neck flanges indicated in table 1. NOTE: Several flanges require a decreased pressure rating during hot bolting (from 9% to 40% less than normal pressure rating). Use Table 1 in conjunction with local hot-bolting safety practices to enhance personnel safety as well as code compliance. one halloween at a time
MINIMUM REQUIREMENT 34 WP/SEA MINIMUM …
WebAug 13, 2024 · We have a high temperature heat exchanger with floating head. The shell side is operated at 275 Deg C, tube side is 200 Deg C. So the bolts of the floating head are actually exposed to 275 Deg C. Mu assumption is, that the torque of these bolts should be higher than the normal torque since the bolts expand under the high temperature. WebSep 7, 2024 · Matt Wright. Now heat the bolt and nut. Put the flame directly over the stuck part, or the part you can get to safely. Heat it for 30 seconds or so and it should free up easily. If it doesn't, repeat the process to see if … WebHot Bolting is the practice of removing and replacing or freeing and re-tightening bolts on live piping and equipment. It is potentially hazardous and the utmost caution needs to be exercised when planning and carrying it out. It is not recommended as best practice although it is widely carried out. one halloween night read aloud