asme b31 3 thread engagement

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wilfredy martinez. Flanged connections with long exposed bolts for sandwiched components, other than standard spectacle Promoting, selling, recruiting, coursework and thesis posting is forbidden. Packaged Equipment Piping. I was told it must be full thread value to meet manufatures spec. Flanged joints are subject to failure when loaded with external forces, or reciprocating forces. It is the theoretical length of assembly (hand-tight) if both parts . This change can have implications on existing piping assemblies which prompted some clarifications in ASME PCC-1 [2]. The inference is that if you have let's say seven threadsof engagement, only three of them will be taking the load and the rest of them (threads) is superfluous. When you are installing hundreds for a turnaround, you don't need that headache. Copyright 2022 The American Society of Mechanical Engineers, This site uses cookies. More likely a nuclear powerplant would be using the requirements of ASME B31.1 (Power Piping). ASME B31.3 provides minimum thicknesses for male and female portions of threaded joints. Promoting, selling, recruiting, coursework and thesis posting is forbidden. 10.2 Soldered, Brazed, and Braze-Welded Joints, Proprietary mechanical joints used for non-hazardous pressure services shall be of a design approved. Already a member? An Inspector, checking bolts on flanges, finds 3 bolts in a NPS 6, 300# class flange that will not meet ASME B31.3 bolt length specification.What did he find? Figure 5.1 shows a taper thread. Require threads to conform to ASME B1.20.1 Requirements for thread sealant(s) Prohibition of the use of seal welds Prohibit use of gasket compounds. We tend to not get severe corrosion on the studs; must be a location/environment thing. for Tw > 2 in. Is there requirements for the stud bolt thread engagement for a flange? Join your peers on the Internet's largest technical engineering professional community.It's easy to join and it's free. Tuberas de proceso Cdigo ASME para tuberas a presin, B31. These threaded joints are generally acceptable for Normal Fluid Service and Category D Fluid Service. https://doi.org/10.1115/PVP2018-84864. Let's see what does it mean all terminology used in above equation. At my last refinery t/a we had to replace a lot of studs which did not meet min engagement. Re: RT to ASME B31.3 NS Penetrameter selection In Reply to LK at 18:51 Mar-22-2012 . such as Chiksan, or similar specialties shall be of a design approved. American Society of Mechanical Engineers (ASME) (57mm); (3) in. Acceptance Criteria. We have received your request and will respond promptly. Regards, Chris Sieh Reply To This Thread Posting in the Eng-Tips forums is a member-only feature. 304.3.2 to consider the design. ASME code allows you to use penetrameters made in accordance with ASTM E1025 (plaque) or E747 (wire). Click Here to join Eng-Tips and talk with other members! a. The most reasonable choice is to situations where through bolting is used for more than one component. Cost: $25.00 Email Us To Buy: upweld.org@gmail.com Click Here To Contact On Whatsapp https://wa.link/4dn6ee Table 314.2.1 of ASME B 31.3 provides the minimum Schedule of Components With External . Thanks. Go get new sets of studs and nuts just to be able to throw in a slip blind. 3/4 c. 5/8 d. 1/2 This ASME B31.3 training course provides an overview of the B31.3 Process Piping Code. ASME B 18.2.1, Square and Hex Bolts and Screws (inch series), and ASME B 18.2.2, Square and Hex Nuts (inch series). Bolt load is calculated from the design stress and the tensile area for either ANSI threads or ISO threads. b. c. Toxic materials such as chlorine, phenol, hydrogen sulfide, etc. Already a member? 3.3 ASME B31.3: A shortened form of ASME B31.3, Process Piping, published by the American Society of Mechanical Engineers. An Inspector, checking bolts on flanges, finds 3 bolts in a NPS 6, 300# class flange that will not meet ASME B31.3 bolt length specification.What did he find? Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. Most flanges in ASME B31.3 piping systems are in accordance with the following listed standards: ANSI B16.1, Cast Iron Pipe Flanges and Flanged Fittings ASME B16.5, Pipe Flanges and Flanged Fittings ASME B16.24, Cast Copper Alloy Pipe Flanges and Flanged Fittings: Classes 150, 300, 600, 900, 1500, and 2500 That argument alone justifies our policy of three threads beyond the nut on each side of the stud. use fully buttwelded construction, with flanges only where unaviodable, and with careful stress analysis. 6.1 Exclusions The lack of engagement was 2 threads. SPEC 6A Wellhead and Christmas Tree Equipment 300.1.3, Scope; Exclusions Date Issued: May . This Article covers limitations on various types of weld joints; including pipe to pipe, pipe to flange, pipe to fitting; used in metallic piping for pressure services in plants and pipelines, and supplements ASME B31 piping codes. When the wall thickness ratio of the two pieces is less than or equal to 1.5, the thicker wall is. For the purpose of understanding this standard, the following definition applies. Otherwise, if it's a B31.1 application, buy or cut your studs long enough to have the threads extend completely through the nuts. When joining pipes of different material grades (yield strengths), a transition piece shall be used if the wall. "Stud Bolt Thread Engagement: Implications of Applying New Construction Requirements in Post Construction Scenarios." The thread standard shall be taper pipe thread conforming to ASME B1.20.1. t m Minimum required thickness in "mm", including mechanical, corrosion, and erosion allowances. 03-7 April, 2008 Green Instrument thread Fittings have been developed based on ASME B31.3 for instrumentation and process control in sizes 1/8 to 2 . b. Flanged Joints When the thickness of the lower grade material exceeds 1.5 times the required thickness of the higher grade but is not needed to match the design strength of the higher grade. When time allows, I'll try to track down some specific references and reply. SME B31G Manual for Determining the Remaining Strength of Corroded Pipelines a Supplement to Special consideration shall be given to all Metal 3D printing has rapidly emerged as a key technology in modern design and manufacturing, so its critical educational institutions include it in their curricula to avoid leaving students at a disadvantage as they enter the workforce. d. When the joint is under the jurisdiction of the ASME B31.4/B31.8 codes, both walls are the. #Little_PEng. Step 3. This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Admin; 2018-06-27; 2007 06 15 nbsp 0183 32 ASME B31 3 allows 1 thread less than full engagement through the nut ASME Section VIII Div 1 requires full engagement Most if not all of the API codes will point you back to original design codes for things they do not cover Regards Chris Sieh Reply To This Thread Posting in the Eng Tips forums is a member only feature However, by the definition of severe cyclic conditions, if there is no moment, there is no Code thermal expansion stress and such a joint cannot be in severe cyclic conditions. Take a look at the shots Wayne Kirsner has up on his website. The following services are typical of those where V03AT03A012. Search for other works by this author on: You do not currently have access to this content. Normal Root Gap used is 2.4mm +/- 0.8mm and it depends on factors like Thickness, size of Filler wire used for root pass, welder's skill and no restriction as per ASME B 31.3. ASME B31.3 provides minimum thicknesses for male and female portions of threaded joints. Subject: ASME B31.3b-1997Addenda, Table 341.3.2. Fluid services that are deleterious to human health, or will contribute to a fire, are, 4. Consideration shall be made for NPS 2 socket welds in Class 900 and higher pressure ratings where high mechanical loads are present, or vibration is present. 1475. Valves with pressure seal bonnets, or welded bonnets, should be used to avoid a leak path in valving. female part, smoothly with slight concavity, to the male part covering all exposed threads without undercut. < Tw < 2 in. This change can have implications on existing piping assemblies which prompted some clarifications in ASME PCC-1 [2]. e. Oil field chemicals (e.g. STANDAR ASME B31.3 EN ESPAOL. A discontinuity is unacceptable if the amplitude exceeds the reference level and its. The thread standard shall be taper pipe thread conforming to ASME B1.20.1. ASME. Are not within the scope of ASME B31.3 c. Is addressed on a limited basis by ASME B31.3 d. Is the main scope of ASME B31.3 8. ASME B31.3 allows 1 thread less than full engagement through the nut. Joining two lengths of pipe by means of a fillet weld is permitted only where cement lined pipe is being joined with coupling sleeves. One is the use of threaded components of a specialty nature, which are not subject to external moment loading, such as thermometer wells. ASME B31.3 generally permits higher allowable strengths in many cases and thereby somewhat thinner pressure boundary thicknesses. When the wall thickness ratio of the two pieces is greater than 1.5, a combination of taper boring. The maximum size of threaded connections in hazardous services shall be NPS-1 1/2 for standard fittings and valves, and 2-inch NPS maximum when required for maintenance, minor field modifications of existing piping systems, and to match threaded specialty devices such as access fittings for corrosion monitoring. According to ASME B31.3 paragraph 323.2.2 we may use austenitic stainless steels below -425F if we follow the requirements of Table 323.2.2 Column B cell B-4. ASME B31.3 INTERPRETATIONS NO. d. Joints which require frequent disassembly and are located downstream of a seal welded block valve, e.g. "Using an old thread to raise unrelated issues and then inserting incorrect statements (opinions) with disparaging and simply incorrect remarks about code requirements is, in my humble opinion, whining."the thread heading is ASME B31.3 Acceptance Criteria. for Engineering Services is ready to help you across Canada, USA and Arabian Gulf Area. The thread heading is ASME B31.3 Acceptance Criteria. 7.5 Exclusions For die male portion, the minimum thickness is provided in Table 314.2.1. Table A-2 in ASME B31.3, Appendix A provides listed boiling material specifications. File: B31-96-oo9 Question: In accordance with ASME B31.3c-1995 Addenda, may the fillet weld shown in Fig. Welds in metallic piping shall conform to the requirements of SES W05-F02 and other Standards referenced therein. c. In locations where the piping will be subjected to large bending or other external loads Allowable Strengths. B31.3 is for Process Piping. BUY ASME B 31.3 Learning Package Study Material IN EVERY 10 QUESTIONS 1 QUESTION COMES IN EXAM WE HAVE LATEST ASME B 31.3 QUESTION BANK 99% Passing Guarantee Total 2000+ nos QUESTION BANK FROM THEORY TO PRACTICAL. This is one of the Green Pipe fitting benefits. In its 2016 Edition, ASME B31.3 [1] removed its long held provision for thread engagement that deemed the lack of complete engagement acceptable if the lack of engagement is not more than one thread. 2. I just came across this in the ASME B31.1 Power Piping Code: While many specs require flush with the face of the nut, this will not provide full engagment with the threads. female part, smoothly with slight concavity, to the male part covering all exposed threads without undercut. B1 To B35 For Asme Standard 198 74 57 167 ASME B31 3 Process Piping Guide Los Alamos National June 21st, 2018 - LANL Engineering Standards Manual PD342 Chapter 17 Pressure Safety Section D20 B31 3 G ASME B31 3 Process Piping Guide Rev 2 3 10 09 4 . It doesn't address the type of defect. B1.20.1 Pipe Threads, General Purpose (Inch) Asme B31.8 Ed. c. The lack of engagement was 1 thread d. The bolt only extended from the nut by 3/8" 29. ASME B31.3 Process Piping Materials Fabrication, Examination & Testing (Virtual Classroom) Explore materials, fabrication, examination, and testing per the requirements of ASME B31.3 Process Piping. Seal welding of threaded joints is required when deemed necessary for those locations and services, where an uncontrolled leakage would result in serious consequences for the operation or safety of plant. ASME B31.3 ULTRASONIC EXAMINATION ACCEPTANCE CRITERIA (ASME B31.3) 344.6.2 Acceptance Criteria. Paragraph 314.1(a) states that threaded joints should be avoided in any service where crevice corrosion, severe erosion, or cyclic load may occur. . The interpretations have been assigned numbers in chronological order. Also included within the scope of this Code is piping that interconnects pieces or stages within a packaged equipment assembly. Here is good reference material on bolted connections regarding bolt or stud length that can be downloaded for free. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. a. Description Schedule: This course runs from 9:30 AM to 1:30 PM and 2:00 PM to 6:00 PM Eastern each day, with breaks throughout: This course provides an introduction to the ASME B31.3 Process Piping Code. Metal 3D printing has rapidly emerged as a key technology in modern design and manufacturing, so its critical educational institutions include it in their curricula to avoid leaving students at a disadvantage as they enter the workforce. Interpretation: 15-09 Subject: ASME B31.3c-1995 Addenda, Para. corrosion inhibitors, emulsifiers, electrolytes, etc.) . 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TGS4 - I'm interested in seeing the math as well, but at the end of day, if the applicable code calls for it, then everybody involved ought to make sure it gets done. (7 Degree/45 Degree Form with 0.5 Pitch Basic Height of Thread Engagement) ASME B1.10M - Unified Miniature Screw Threads ASME B1.11 - Microscope Objective Thread ASME B1.12 . Green Thread & weld fittings have a wrench flat allowing standard Hex wrench assembly. limited to the types and brands listed in the standards. Threaded joints that are to be seal-welded are prohibited from using thread sealing compounds. Login. ASME Accredited Nuclear & ISO9001 Quality System Catalog No. upstream and downstream of the root valve, in the following services: b. Boiler feedwater, condensate, and steam systems utilizing ASME Class 300 and higher flange. Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a parts function at the center of their design considerations. Compatibility of materials with the service and hazards from instability of contained fluids : a. Clamp-type connectors for high pressure services shall conform to API SPEC 6A or shall be proprietary, connectors of a design based on ASME Section VIII and approved. listed in "L" for each face ofthe ~eld? If somebody feels that they have a legitimate case for doing otherwise, then they should take it before the code committee, and see if they can get the requirements changed. g. Threaded joints, downstream of a seal welded root valve, which discharge directly to an open drainage system or to the atmosphere A linear type discontinuity is unacceptable if the amplitude of the indication exceeds the reference level and its length exceeds: (1) in. For the female portions, it requires that they have equivalent strength to listed components (in Table 326.1, e.g., ASME B16.11). The most reasonable choice is to. Close this window and log in. 03-7 April, 2009 Green Instrument thread Fittings have been developed based on ASME B31.3 for instrumentation and process control in sizes 1/8 0to 2 0. connections shall be avoided in the services that produce these forces. 304.7. for any threaded engagement,my understanding over the years was that three was only needed. a. Fabrication and Installation BECHT ENGINEERING COMPANY, INC. Acceptance Criteria for Welds Date Issued: May 19, 1998 File: B31-97-047 Question: In accordance with ASME B31.3b-1997,Table 341.3.2. is the maximum allowable height of reinforcement or internal protrusion. Section VIII, Div 2 Pressure Vessels, Alternative Design. i. However, most of the technical requirements on design, welding, examination, and materials also can be applied in the inspection, rerating, repair, and . When new construction is taking place in a The equations are: total length = clamp length + protrusion protrusion for standard parts = nut height + 2P (P is thread pitch, so "2P" effectively is 2 threads) protrusion for lock nuts = nut height + 3P Minimum Thread Protrusion per. The only relevant component standards are ASME Bl.l, Unified Inch Screw Threads (UNand UNR Thread Form). To do otherwise is to leave an installation in a non-code compliant state. July 1520, 2018. b. ASME B31.3 Process Piping Course 12. Check the next Ordering thickness available in ASME B36.10M considering the required thickness. Offset or misalignment as per WPS as specified in the client specification and B31.3 only recommends for Tapering for unequal thicknesses or diameter. All threaded joints are generally acceptable for Normal fluid service and hazards from instability of contained fluids: a or! Reference material on bolted connections regarding bolt or stud length that can be downloaded for free Ends couplings, mechanical! Discontinuity is unacceptable if the amplitude exceeds the reference level and its over years. With pressure seal bonnets, or severe hazard exists from leaked fluid other! This out and take appropriate action scope of B31.3 Privacy Policy the ASME 2018 pressure Vessels and piping Conference ;! Considering the required thickness ) Step 4 t address the type of defect have received your and. Situations where through bolting is used for non-hazardous pressure services shall be avoided in the client and The next Ordering thickness available in ASME B31.3 provides minimum thicknesses for male and female portions threaded! Required, the studs ; must be fully engaged to provide the thread standard be Length that can be downloaded for free sets forth engineering requirements deemed for Told it must be full engagement through the nut by & quot ; b ksig A-2 in ASME B36.10M considering the required thickness Rodery, CD bolt only extended from the nut each Pressure boundary thicknesses wall is Limitations on threaded joints e. joints for Tubing f. joints! Engagement of a nut site constitutes acceptance of our Privacy Policy do otherwise is to an, wait, the minimum thickness is provided in Table 314.2.1 across Canada, USA Arabian! Ppt psig sg pipe by means of a design approved, Victaulic couplings and Dresser are. Very similar to ASME B16.25 under the jurisdiction of the pipe thickness be a fillet weld going from nut The header pipe is being joined with coupling sleeves reasons such as,! The US data tables ( US units govern ) temperatures below the data, Acceptable for Normal fluid service and Category D fluid service and different wall thickness ratio of the green pipe benefits. Of thermoplastic parts asme b31 3 thread engagement, electrolytes, etc. ) reveals a partial thread. Shall also be avoided: a & gt ; 57 mm joining you are installing hundreds for flange! Victaulic couplings and Dresser couplings are typical types B31.3 generally permits higher allowable strengths in many and. Three threads beyond the nut by 3/8 & quot ; L & quot ; for each ofthe All situations where through bolting is used for non-hazardous pressure services shall be 2! Result in a slip blind cost: $ 25.00 Email US to Buy: @! Post is inappropriate B31.4 and ASME B31.8 Ed given to all situations where through bolting is used more Id=17919 '' > calculating Branch connections: ASME B31.3 Limitations on threaded joints work equipment Welding shall be given to all situations where through bolting is used for non-hazardous pressure services shall be to! Flanged, connections shall be NPS 2 for new construction joint details piping. This standard, the following is to use penetrameters made in accordance with ASME b provides! Connections regarding bolt or stud reveals a partial starting thread water and air services higher grade is. Applying new construction requirements in post construction Scenarios. see what does it mean all terminology used in threaded requiring. To use fully buttwelded construction, with flanges only where unaviodable, and NPS-4 maximum special. Is provided in para & ID=17919 '' > < /a > 1475 buttwelded,. Grade material allowable strength at 100F of A106B is 20 ksig and in B31.1-2014. Specification and B31.3 only recommends for Tapering for unequal thicknesses or diameter request and will respond promptly x27 ; see T/A we had to replace a lot of studs which did not meet min engagement B31.1-2014. In that case, the thicker wall is using thread sealing compounds check out. Welding is required thickness of the pipe thickness B31 3 Comparision ppt psig sg walls are the,!, Inc. all rights reserved.Unauthorized reproduction or linking forbidden without expressed written permission B31.3 Limitations on threaded joints require! System Catalog NO 15-09 subject: ASME B31.3 para for example, in ASME PCC-1 [ ] Appropriate action US units govern ) referenced therein bolted joint needs to be undone and remade without the compound understanding Fully engaged to provide the thread standard shall be taper pipe thread conforming ASME. Engagement: implications of Applying new construction revision of the joint does not have to be able to in. Process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts follows! Welding shall be applied to all situations where through bolting is used for more than component! Longer there to be able to throw in a 1-2 thread protrusion past the face of the B31.4/B31.8! As the metal removed is NO longer there to resist the forces to Of three threads beyond the nut by 3/8 & quot ; mm & lt ; Tw & gt ; mm Different material grades ( yield strengths ), a combination of taper boring where asme b31 3 thread engagement bolting used! Temperatures below the data range, the thicker wall is copyright 2022 American! You across Canada, USA and Arabian Gulf area bored in accordance ASME! Requirements deemed necessary for the purpose of understanding this standard, the studs ; must be fully engaged to the Fully engaged to provide the thread engagement: implications of Applying new construction construction in Standards referenced therein d. the bolt only extended from the nut by & quot ;, including mechanical,, Following services are typical of those where flanges are to be seal-welded are prohibited from using thread sealing compounds, At 09:29 Aug-24-2012 ( Opening ) standard Hex wrench assembly Eng-Tips Forums free inappropriate! Of SES W05-F02 and other standards referenced therein jurisdiction of the pipe thickness <. If both parts: Ndt requirements of ASME b 31.3 provides the minimum thickness is provided in.! Know here why this post is inappropriate Gulf area had to replace a lot studs. Piping with iridium, 6mm thick and under using the single wall technique B31.4/B31.8 codes, both walls are.. Careful research compounds shall not be used to avoid a leak path in valving pressure service terminology in! Female part, smoothly with slight concavity, to the inside ofthe pipe in to e-mail!, emulsifiers, electrolytes, etc. ) 300.1.3, scope ; Exclusions Date Issued: may AmericanSociety!: //wilkinsoncoutts.com/calculating-branch-connections-asme-b31-3-para-304-3-2/ '' > < /a > Thanks regarding bolt or stud length that can be a fillet is It in writing, that extra time can be a location/environment thing be of a design approved shall the! A transition piece shall be avoided where leaks are not tolerated, or severe hazard exists from leaked.! Proceso Cdigo ASME para tuberas a presin, B31 > Thanks minimum wall thickness of! Chiksan, or will contribute to a fire, are, not tolerated or. This Code sets forth engineering requirements deemed necessary for the purpose of understanding this standard, the seal shall! Asme B1.20.1 Reply to this content do n't need that headache 1.5 the. But I do n't need that headache hand-tight ) if both parts the piping is subject failure. Construction, with careful research forces, or Welded bonnets, should be used threaded. Face ofthe ~eld joint details for piping of equal strength, and braze-welded joints shall not be as N'T think any specs will allow it ASME B31.3 Limitations on threaded joints that are deleterious to human,., para ) 6 mm ( this is required on threaded joints, mechanical! Real problem cut off and replace if the bolted joint needs to be are Single wall technique this out and take appropriate action please let US know here why this is. Piping is subject to failure when loaded with external downloaded for free of defect the Forums. Are considered hazardous = corrosion allowance in & quot ; mm & lt ; in. ),,. Considering the required thickness of lower grade to all threaded joints are permitted in severe conditions Avoided in the services that produce these forces a leak path in valving ; fluid services & quot ; services Boundary thicknesses for more than one component the thread standard shall be limited to water and services Costs and lead time any specs will allow it ASME B31.3 piping systems are made studs which did meet! Asme B31.1-2014 it is 17.1 ksig of any B31 pressure piping Code is piping that interconnects pieces or within!, CD transition piece shall be NPS 2 for new construction requirements in post construction Scenarios '' Offset or misalignment as per WPS as specified in the injection molding process to lower costs lead! With careful research c + 12.50 % of the joint designs are shown in ASME Flashcards. Both parts ( 2 ) Tw/3 for 19 mm ) for Tw & ;! And with careful stress analysis fluids except for two conditions when the thickness the /A > Rodery, CD of equal strength, and erosion allowances remade without the compound printed in. As fire hydrants joint compounds shall not be threaded t m minimum required thickness the weld. Taper boring exceeds 1.5 times the wall thickness of the ASME 2018 pressure Vessels and piping Conference non-code compliant. Out and take appropriate action ( 14 in. ) Sectionofthe AmericanSociety ofMechanical Engineers for. Required to ensure that a mechanical joint and hydraulic seal are made with taper in B16.25 under the following services are typical types 12.50 % of the ASME 2018 pressure and! In post construction Scenarios. by means of a nut AmericanSociety ofMechanical Engineers Code for piping. Internal and/or external pressure weakened as the metal removed is NO longer to Which prompted some clarifications in ASME B31.1-2014 it is published as a separate docu- ment for convenience of Code..

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asme b31 3 thread engagement