The new publication reflects advances in gasket technology, bolting assembly procedures, and calculation methods. This revision was approved by ansi as an american national standard on. Introduction and overview of asme pcc2 scope, organization, and intent applicability and limitations of repair methods covered by asme pcc2 choosing correct repair technique for given. Bolts and bolt studs shall extend completely through the nuts. Asme pcc12000 was approved by the american national standards institute ansi as an american national standard on november 15, 2000.
Morsafe online bolt renewal services english hydratight. This article is meant to use the strength of pcc 2, its clear and logical structure, to list the pcc 2 repair options and weavethrough the corresponding asme xi repair techniques. Heat exchanger tube plugging relative to asme pcc2 2011. It is covered by asme s pcc2 repair of pressure equipment and piping standard alongside the gc restraint clamps, but hydratight has proven morsafe as the safest of the industry accepted options and uses it as a default hot bolting practice. Retorquing to reduce fugitive emissions when and when not causes of low operational bolt load. Retorquing to reduce fugitive emissions when and when not excessive emissions with reduced bolt load comparison of ptfe gaskets nps 3 x 150 flanges. Turnkey service with engineering, manufacturing and specialty welding. Asme xi repairs with pcc2 as a roadmap becht engineering. From field machining and osite bolting to hot tapping and pipe isolation, we are committed to meeting your needs and exceeding your expectations. These repair methods include relevant design, fabrication, examination, and testing practices and may be temporary or permanent. The first edition of asme pcc2, repair of pressure equipment and piping, was approved for publication in 2004.
Repair of pressurerepair of pressure equipment and pipingequipment and piping ipeiaipeia 20092009 john reynolds consultant with proinspect, inc. Asme pcc2, being a relatively new standard and fairly popular, has proved to be useful worldwide for repair of pressure equipment and piping. We work to eliminate shutdowns, keep your costs down, and earn the opportunity to be of service every day. These repair methods include relevant design, fabrication, examination, and testing practices and may be temporary or permanent, depending on the. Single stud replacement ssr, or as currently known in asme pcc2 as hot bolting is the removal and replacement of studs on a bolted joint on a one at a time basis in a predetermined sequence. Guidelines for pressure boundary bolted flange joint assembly pcc1 provides guidance and is applicable to both new and inservice bolted flange joint assemblies.
Asme pcc2 provides methods for repair of equipment, piping, pipelines and. One factor usually not taken into consideration in performing hot bolting is the dried antiseize. Hot bolting half bolting flange repair and conversion pipe straightening or alignment bending pressure and tightness testing of piping and equipment pneumatic testingdos and donts nondestructive examination in lieu of pressure testing for repairs and alterations relevance of asme pcc2 standard with api 510 and api 570 codes. Published in november of 20, pcc1 replaces the first edition, which was published in 2000.
Bolting torque to develop 50% bolt yield stress at nut factor, k0. Not only is hot bolting or torquing a serious safety issue that has caused deaths, but it is also hard to understand how accurately it can actually be performed. Pdf repair of pressure equipment and piping asme pcc2. Personnel can seriously compromise the safety of the joint if they do not understand the factors affecting the load applied by the bolt or its strength at elevated temperatures, and if they tighten a heated bolt. Hot bolting calculations pipelines, piping and fluid. The operating pressure must be less than 75% of the mawp as allowed under ansi b16. Repair guidelines for damaged anchors in concrete hot and half bolting.
Driving safety improvements in hot bolting vs the way its. To avoid costly disasters from improperly installed or maintained bolts, asme created the bolting specialist qualification program. I, iv, vi, vii, x, xii codes, standards and elearning solutions. Pcc2 repair of pressure equipment and piping asme asme. Fabrication and installation becht engineering company, inc. He teaches the asme principles of bolted joints per pcc12019 asme pd577 and is the principal instructor for the osha training institute safe. Dec 01, 2016 201692528 asmepcc2highlightsjreynolds 1. View a complete list of asmes bpvc codes and standards for boilers and pressure vessels with related elearning and public courses. Asme pcc22011 revision of asme pcc22008 repair of pressure equipment and piping an american national standard three park avenue new york, ny 10016 usa. Fabrication and installation 37 flange joints more topics addressed.
Many large companies have adopted these procedures and incorporated them in their company specifications. Pcc1, guidelines for pressure boundary bolted flange joint assembly pcc2, repair of pressure equipment and piping. Asme pcc3, inspection planning using riskbased methods, is a standard developed by the american society of mechanical engineers asme specifically for applications involving fixed pressurecontaining equipment and components. It is covered by asmes pcc2 repair of pressure equipment and piping standard alongside the gc restraint clamps, but hydratight has. The dangers of hot bolting fluid sealing association. Vessel fabrication specification asme code section viii. Repair of pressure equipment and piping certifico srl. Develop and maintain various articles in part 4, nonmetallic and bonded repairs in asme pcc2, repair of pressure equipment and piping. This standard provides methods for repair of equipment, piping, pipelines, and associated ancillary equipment within the scope of asme pressure technology codes and standards 1 after they have been placed in service. Committee pages subgroup on nonmetallic repair pcc asme. Ptfe liner and hdpe flangeliner creep soft joint piping thermal expansion effects from additional gasket compression short effective. This standard provides methods for repair of equipment. Asme pcc120 a providing onthejob training to qualified bolting specialists, bolting assemblers, and bolting trainees b maintaining and analyzing records, including those for joint assembly procedures, inspections, and senior bolting specialist performance, including meet ing the requirements of section a3 c ensuring that senior bolting specialists.
Asme pcc120 a providing onthejob training to qualified bolting specialists, bolting assemblers, and bolting trainees b maintaining and analyzing records, including those for joint assembly procedures, inspections, and senior bolting specialist performance, including meet ing the requirements of section a3 c. Guidelines for pressure boundary bolted flange joint assembly. It is covered by asmes pcc2 repair of pressure equipment and piping standard alongside the gc restraint clamps, but hydratight has proven morsafe as the safest of the industry accepted options and uses it as a default hot bolting practice. Boundary bolted flange joint assembly pcc1 provides guidance and is applicable to both new and inservice. Hot bolting allows for corroding studs and nuts to be removed as part of preventative maintenance while the line is in service. The inspection planning using riskbased methods standard pcc3 provides guidance on the preparation of a riskbased inspection plan. Lanl engineering standards manual std342100 chapter 17pressure safety section ref references rev.
This article is meant to use the strength of pcc2, its clear and logical structure, to list the pcc2 repair options and weavethrough the corresponding asme xi. When the term hot bolting is used by the asme and others, they specifically refer to depressuring the equipment, loosening the bolts. The first edition of asme pcc 2, repair of pressure equipment and piping, was approved for publication in 2004. Single stud replacement ssr, or as currently known in asme pcc2 as hot bolting is the removal and replacement of studs on a bolted joint on. The first edition of asme pcc1, guidelines for pressure boundary bolted flange joint assembly. Fortress specialty services composite wrap systems meet the engineering design requirements of dot, asme b31. Asme pcc 12000 was approved by the american national standards institute ansi as an american national standard on november 15, 2000. Asme pcc2 repair of pressure equipment in indonesia. Hydratight offers safe, online bolt renewal or hot bolting services on all asme flanges.
Shell global solutions retired banff, alberta february 12, 2009 2. Course asme pcc2 repair of pressure equipment bandung. Asme pcc1 guidelines for bolted flange joint assemblies. This revision was approved by ansi as an american national. Asme pcc3 inspection planning using riskbased methods.
That being said, hot bolting should be usedo nly when there is no otehr reasonable choice. One of the key aspects in the successful execution of this activity is the determination of the appropriate maximum pressure governing the operation. Asme pcc3 provides guidance to owners, operators, and designers of pressurecontaining equipment for developing and implementing. He is a member of the asme bolting specialist qualification program advisory committee. Asme pcc1, guidelines for pressure boundary bolted flange joint assembly bfja, is a standard created and published by the american society of mechanical engineers asme. Gom region hot bolting safe work practice swp 1 purposescope the purpose of this safe work practice swp is to outline the requirements for conducting safe hot bolting operations. Asme pcc22015 repair of pressure equipment and piping.
These services are performed without any damage, leakages or interruptions in daily production. This standard applies to pressureboundary flanged joints with ringtype gaskets that are. Asme pcc standards asme post construction committee was formed in 1995 to develop codes and standards addressing technical issues after initial construction. Driving safety improvements in hot bolting vs the way it. The inspection planning using riskbased methods standard pcc 3 provides guidance on the preparation of a riskbased inspection plan. Asme pcc2 repair of pressure equipment and piping training.
Loenbro industrial construction and services specialty. The above table is applicable only for astm a320 grade b8, class 2 and a193 grade b8, class 2 stud bolts. Some of the pcc 2 repairs were first drafted by nuclear power plant engineers. Lubrication of bolting, back facing numbering of bolts tighten bolting uniformly in crisscross pattern is small steps target bolt stress is typically 50 ksi 340 mpa. Refer to asme pcc2 for further information on jointtightening activities once the unit is fully operational. Asme pcc 2, being a relatively new standard and fairly popular, has proved to be useful worldwide for repair of pressure equipment and piping. Driving safety improvements in hot bolting vs the way its always. A risk assessment shall be performed prior to hot bolting to confirm the flange will not leak or fail during the procedure. Nov 15, 2019 single stud replacement ssr, or as currently known in asme pcc2 as hot bolting is the removal and replacement of studs on a bolted joint on a one at a time basis in a predetermined sequence. Technology codes and standards1 after they have been.
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