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Quality Standards | Nondestructive Testing | Welding
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WTIA – TECHNICAL NOTE 24
3. QUALITY STANDARDS 3.1 EN 729 Part 1 to 4 - The European Way EN 729 is the European standard specifying quality requirements for welding. More specifically, the standard specifies provisions for control of welding as a special process. EN 729 comprises of four parts: EN 729 Part 1 defines the three different approaches detailed in Part 2, Part 3 & Part 4 and guides in the selection of the part most appropriate to a company; EN 729 Part 2 is intended to be used where the product form, materials, processes and procedures vary and/or where welding quality is critical or difficult to achieve. It can also be used as a stand-alone document or used as a supplement to ISO 9001 or IS0 9002 requirements; EN 729 Part 3 is intended to be used where weld quality is important but materials, processes and procedures change only frequently; EN 729 Part 4 is intended to be used when neither of the following conditions apply: • • an ISO 9000 quality system is not present; the combination of welding processes, procedures and the requirements for the final welds are such that documented welding control has only a minor importance with respect to the overall integrity of the product.
It is intended for use where welding is perhaps only an incidental joining process with very limited and simple technical options. EN 729 does not impose any unnecessary limitations on the way control of welding is organised. According to the standards, the manufacturer shall have at his disposal appropriate welding coordination personnel such that the welding personnel can be supplied with the necessary welding procedure specification or work instructions, and that the work can be properly performed and controlled. Such persons having responsibility for quality activities shall have sufficient authority to enable any necessary action to be taken. The duties, interrelationships and limits of responsibility of such persons should be clearly defined.
EN 729-3 and EN 729-4 Elements Contract Review Design Review Subcontractor Welders/operators Welding coordination Inspection personnel Production equipment Equipment maintenance Production plan WPS Welding procedure approval Work instructions Documentation Batch testing of consumables Storage of raw materials PWHT Inspection before. as needed No demands No demands No demands No demands No demands No demands No demands No demands No demands No demands Responsibilities as specified in contract Fully documented Less extensive review review Design for welding to be confirmed Treat like a main fabricator Approved to EN 287 or EN 1418 Welding coordination personnel with appropriate technical knowledge according to EN 719 or persons with similar knowledge Sufficient and competent personnel to be available Required to prepare. weld. cut.WTIA – TECHNICAL NOTE 24 CHAPTER 3 Page 9 Table 3.1 Comparison of Welding Quality Requirements with Regard to E729-2. maintenance must be adequate plan necessary Necessary More restricted plan necessary Instructions to be available to welder (EN 288) To EN 288-2 . lift. after welding Non-conformances Calibration Identification Traceability Quality records EN 729-2 EN 729-3 EN 729-4 Establish that capability and information is available As above Must comply to standard Not demanded but personal responsibility of manufacturer Sufficient and competent access for external inspectors. together with safety equipment and protective clothes Has to be carried No specific demandsout.Approved as application standard or contract demands WPS or dedicated work instructions to be available Necessary Not specified Only if specified in Not specified contract Protection required from influence by the environment Specification and Confirmation to complete record specification necessary As required for specified operations Procedures must be available Procedures must be in operation If demanded by contract only Not specified Not specified Not specified As required by contract Must be available to meet the rules for product liability. retained for five years minimum . during. transport.
2 ISO 3834 Part 1 to 4 .3 summarises the comparison of the three parts of ISO 3834.2 Selection of Welding Quality Requirements Welding requirements for contract Comprehensive Standard Elementary Quality requirements ISO 9001/2 utilised ISO 9001/2 not utilised Welding Quality Requirements to ISO 3834 Part 2 Part 2 Part 2 Part 3 Part 2 Part 4 Note: When used in conjunction with ISO 9001/2 specifications the requirements of ISO 3834 Part 2 may be minimised to a level appropriate to the product. Figure 3. Table 3. Figure 3. .The International Way The standard is published in four parts.WTIA – TECHNICAL NOTE 24 CHAPTER 3 Page 10 3.2 assists in the proper selection of the welding quality requirements.1A and Table 3.1: Flow diagram for selection of welding quality requirements (Source: AS/NZS ISO 3834:1999 Part 1) Table 3.
cut. identification shall be maintained Specification and Confirmation to complete record specification necessary necessary As required for specified operations No requirements No requirements Responsibilities as specified in contract Procedures shall be available Procedures shall be Not specified available Required when Required. No requirements maintenance plan shall be adequate necessary Necessary Restricted plan necessary No requirements Instructions to be available to welder (ISO 9956-2) No requirements In accordance with the appropriate part of ISO No specific requirements 9956.WTIA – TECHNICAL NOTE 24 CHAPTER 3 Page 11 Table 3. operators Welding coordination Inspection personnel Production equipment Equipment maintenance Production plan WPS Welding procedure approval Work instructions Documentation Batch testing of consumables Storage and handling of welding consumables Storage of parent materials PWHT Inspection before. transport. during. together with safety equipment and protective clothes Shall be carried out. as needed No specific requirements Fully documented Less extensive review review Design for welding to be confirmed Treat like a main fabricator Approved in accordance with ISO 9606 Welding coordination personnel with appropriate technical knowledge or persons with similar knowledge Sufficient and competent personnel to be available Required to prepare. when necessary Not specified appropriate Not specified Shall be available to meet the rules for product As required by contract liability Retained for five years minimum (Source: AS/NZS ISO 3834:1999 Part 1) . approved as application standard or contract demands WPS or dedicated work instructions to be No requirements available Necessary Not specified No requirements Only if specified in Not specified No requirements contract According to suppliers' recommended minimum Protection required from influence by the environment.3 Summary Comparison of Welding Quality Requirements with regard to ISO 3834-2. No specific requirements. ISO 3834-3 AND ISO 3834-4 Elements Contract Review Design Review Subcontractor Welders. after welding Non-conformances Calibration Identification Traceability Quality records ISO 3834-2 ISO 3834-3 ISO 3834-4 Establish that capability and information is available Shall comply with all requirements Not required but personal responsibility of manufacturer Sufficient and competent access for third parties. lift. weld.
a welding engineer may be perfectly competent for a specific task but . job experience.g. It implies competence plus the ability to perform a specific task. ISO 3834 is the first of what may be a series of standards developed to define the elements that must be properly controlled before and during production operation of the various special processes to provide assurance that the resulting weld. There are also requirements for various documented procedures that can most conveniently be presented in a manual. Inevitably there is considerable overlap as many elements involved in the control of welding are similar to the general quality management system requirements.2. Some elements of ISO 9001/2 however are missing from ISO 3834 as noted below. trained and or experienced to be able to perform a particular function and task. Capability is rather more difficult to define. education and experience. Competence can be achieved through training.2 ISO 3834 "Competence and Capability" Although ISO 9001/2 requires evidence of training for personnel. For example.2.WTIA – TECHNICAL NOTE 24 CHAPTER 3 Page 12 3. The requirements of the standard need to be able to be demonstrated from time to time and thus it would be a simple matter to introduce a more regulated review. • Internal Audit and Quality System Review Because ISO 3834 does not set out to be a complete quality management system it does not require evidence that the quality system is maintained by a formal internal review system. it does not attempt to require evidence of "competence". which may be achieved by training. • Quality Policy Statement and Manuals and Full Documented Procedures ISO 3834 does not require a Quality Policy Statement or the development of a Quality Manual although it is obviously much easier to demonstrate compliance with the standard if a manual is produced. it does not attempt to define the competence of a company or individuals in respect of special skills and knowledge in relation to "special processes". 3. This is because ISO 9001/2 was developed on the basis that the conformance of any product or manufacturing operation involved in production can be verified by inspection after the event. e. Although it does require that all staff are properly trained in the operation of quality systems. ISO 3834 and ISO 14731 require that employees are competent for their tasks. coating etc. • Training ISO 9001/2 requires that all employees are trained for their tasks and functions and that training records are kept. will perform as expected. compliance with ISO 14731 for ISO 3834:Part 2 and ISO 3834:Part 3 does require that the organisation of welding-related activities be documented.1 Comparison between ISO 3834 and ISO 9001/2 ISO 9001/2 focuses on formal quality management systems with the intention that all aspects of the organisation and operation of the company are properly documented and controlled by procedures. education or a combination of these. It does not ask for training records to be kept and updated. which in this case means properly qualified.
the standard requires the company only to use subcontractors who themselves comply with the standard. These transition arrangements are of course all the more relevant outside Europe.WTIA – TECHNICAL NOTE 24 CHAPTER 3 Page 13 incapable of performing it because he does not have the necessary resources e. which uses the term "minimised to an appropriate level" can be adopted.2A and Figure 3. is to persuade all companies to progressively adopt European or ISO standards in preference to others. that will be taken as acceptable evidence of compliance at the present time. It is commonly assumed that many operations can be subcontracted and that even key welding coordination staff can be hired in under contract. international. Additionally. it makes no allowance for nationally or internationally recognised equivalent standards. 3. irrespective of the welding complexity of the product. It therefore calls up (or recommends in some cases) other EN standards such as EN 287 (now ISO 9606) Approval Testing of Welders. but can show evidence that they do adhere to a similar standard (national. if any. In the strict sense.3 Problems in Complying with ISO 3834 The standard was drafted to detail how fabricating companies in Europe should operate and use other relevant EN standards. in relation to subcontractors. Similarly. it is usually assumed that the term "capability" refers to the facilities used i. competent staff and labour.2. the building. The intention within Europe. that will also be accepted as within the spirit of the standard. however. This is not as onerous as it may appear as many of the elements in Part 2 will also have been covered in the 9001:Part 2 systems and procedures. or is developing. EN 288 (ISO 9956) Approval of Welding Procedures and similar standards for non-destructive testing procedures and operation.e.4 Selection of Appropriate Part of ISO 3834 (with ISO 9001 Part 2) Where a company has. then the note to Table 3.2. In practice. very few. buildings. Obviously at this time. during the period when the standard is being introduced and accepted. then Table 3. 3.2.e. application codes etc). an ISO 9001:Part 2 Quality Management system.g. That is. . provided the company can show evidence of having carried out some form of vendor assessment on the subcontractor. services. major capital plant etc.2A. both show that the company must develop a system against the requirement of Part 2. if the company has good reason (including extensive previous activities) for not having adopted all the related standards quoted. If the welding complexity is more appropriate to Part 3 or 4. it is impossible for a company to comply with ISO 3834 if it does not conform to the other related EN or ISO standards. equipment. subcontractors will be able to demonstrate compliance with the relevant subcontracted activities The solution adopted in Europe is the obvious compromise i. services.
Here obviously the technical demands upon the AWC are much reduced. Here the welding processes and materials do not change and there may be little or no inspection. products. The welding coordination activities will be simply routine and not extensive. guards etc. e. gratings. Note that in this case. primary steel structures or high quality jobbing shop fabrication with a wide range of capability. agricultural equipment. companies designing and supplying electrical machines.WTIA – TECHNICAL NOTE 24 CHAPTER 3 Page 14 The following examples show how the standards may be selected in various circumstances. street furniture. all of which are in conjunction with ISO 9001:Part 2 system. fences. In this case the welding coordination arrangements will be simpler. as the technical complexity and variability of welding is low. shelving. process plant. NDT and so on will be more akin to Part 3. procedure qualification. procedures will need to be documented but other objective evidence of good technical control of the elements may be acceptable. The arrangements should be incorporated in the ISO 9001 Part 2 system procedures. switch gear consoles. they can be remedied within the existing ISO 9001/2 procedures or by drafting new specific procedures. simple vessels and tanks etc.g. • A company (with ISO 9001/2) manufacturing pressure vessels. The AWC should be satisfied that he/she is competent to define good practice for the range of materials and that the personnel are also competent for the range of elements in Part 2. such that the requirements of Part 4 may be used. • A company (with ISO 9001/2) where the welding activity is secondary to the prime activity or where the product has a very low specification in terms of welding technology and a low safety criticality e. furniture. In particular. racking. the Authorised Welding Coordinator (AWC) and the organisation will need to be seen to be competent to be able to implement all the technical requirements involved in the various welds required.g. Preferably. Obviously the requirements of Part 2 in total must be addressed. formal procedures will be required. the technical demands of contract and design review planning. equipment. . walkways. platforms. cabinets. • A company (with ISO 9001/2) fabricating simple structures in a limited range of thicknesses of mild or medium carbon steel. This may mean reviewing the elements as they appear in the company's ISO 9001/2 procedures to ensure that there is adequate emphasis on consideration of the welding related elements by coordinating staff who are properly aware of possible welding problem Where any gaps or omissions are found.
manipulation and in-process inspections to ensure the uniformity of the product. it is likely that documented procedures will be the most acceptable way of demonstrating compliance controlled by an AWC who has comprehensive technical knowledge and experience. at least in terms of the range of materials used. NDT requirements) and when weld failure may not have significant safety implications. Part 2: • when the product is technically complex in terms of design.5 Selection of Appropriate Part of ISO 3834 (without ISO 9001:Part 2) The guidance given above still applies except for the following.WTIA – TECHNICAL NOTE 24 CHAPTER 3 Page 15 3. consumables and joint configuration and acceptance criteria are undemanding • there are no consequences of failure then the company should apply the requirements of Part 4 . range of materials. Although not strictly required. In such cases. Again.2. and procedures. welding processes. Part 4: When the welding activity is such that • control can effectively be delegated to a charge-hand welder • process and products are routine in nature • materials. forms. forms. requires special manufacturing sequences. Part 3: When the welding activities are largely limited and repetitive (if not in terms of product. it is clearly not necessary for the AWC to have a very wide technical knowledge of welding engineering and that experience may be sufficient. documented procedures will be the most obvious way of demonstrating compliance. NDT requirements. or • when there are significant safety implications involved in any weld failures. thicknesses. thickness. but other objective evidence may be accepted. or • the range of welding processes and procedures that can be utilised.
g.WTIA – TECHNICAL NOTE 24 CHAPTER 3 Page 16 3. customers or the manufacturers management: assessment of welding quality requirements.Guidelines for selection and use This standard is identical with. and has been reproduced from. e. third parties. assessment of the welding quality requirements mentioned in the cases above. The application of this would typically occur in the following circumstances: • • • • in contractual situations: specification of welding requirements for quality systems. by manufacturers: establishment and maintenance of welding quality requirements.Fusion welding of metallic materials . by committees preparing structural codes or other application standards: specification of welding quality requirements. API. AWS. as a guideline for specification and establishment of the part of the quality system related to control of welding as a special process. providing guidelines to establish specifications and welding quality requirements. AS/NZS.1:1999 Quality requirements for welding . . where a quality system according to ISO 9001 and ISO 9002 is not involved.3.3 AS/NZS ISO 3834 Part 1 to 4 .1 AS/NZS ISO 3834. It is intended to be used for the following purposes: • • • providing interpretation of the requirements in the ISO 9000 series of standards.The Australian and New Zealand Way 3. The standard includes a series of appendices to allow Australian manufacturer's to use other supporting standards besides ISO Standards eg. ISO 3834-1:1994. by interested parties. ASME.
9: Equivalent Australian and New Zealand Standards for Steel Structures Equivalent American Standards for Steel Structures Equivalent Australian and New Zealand standards for Aluminium Structures Equivalent Australian and New Zealand Standards for Pressure Equipment Equivalent American Standards for Pressure Equipment Equivalent Australian and New Zealand Standards for Pipelines .Fusion welding of metallic materials .2 AS/NZS ISO 3834.2:1999 Quality requirements for welding .WTIA – TECHNICAL NOTE 24 CHAPTER 3 Page 17 3. These equivalents are listed for the following applications: • • • • • • Table 3. Case 3 To provide specific requirements for fusion welding as guidance to a manufacturer developing a quality system.8: Table 3. Case 2 To provide specific requirements for fusion welding in contracts which require the manufacturer to have a quality system other than ISO 9001 or ISO 9002. It may however be more appropriate for AS/NZS ISO 3834-3 or AS/NZS/ISO 3834-4 to be used in such cases. New Zealand and other standards as equivalents to the ISO standards.4: Table 3. The requirements contained within this part may be adopted in full or may be selectively deleted by the manufacturer if not applicable to the construction concerned. They provide a flexible framework for the control of welding in the following cases. Case 4 To provide specific requirements for references in application standards which uses fusion welding as part of its requirements or in a contract between relevant parties.7: Table 3. Case 1 To provide specific requirements for fusion welding in contracts which require the manufacturer to have a quality system in accordance with ISO 9001 or ISO 9002.Comprehensive quality requirements This standard is identical with and has been reproduced from ISO 3834-2:1994.5: Table 3.3.6: Table 3. This standard also provides for the use of Australian.
WTIA – TECHNICAL NOTE 24 CHAPTER 3 Page 18 Table 3.4: Equivalent Australian and New Zealand Standards for Steel Structures ISO standards listed in clause 3834-1: 1994 Quality requirements for welding.Fusion welding of metallic materials. Part 1: Guidelines for selection and use Non-destructive testingQualification and certification of personnel Approval testing of welders.Fusion welding of metallic materials.3-2002 AS/NZS 1554.4: 1995 AS/NZS 1554. Part1: Steels Approval testing of welders.Fusion welding.General engineering Structural steel welding Part 1: Welding of steel structures Structural steel welding Part 2: Stud welding (steel studs to steel) Structural steel welding Part 3: Welding of reinforcing steel Structural steel welding Part 4: Welding of high strength quenched and tempered steels Structural steel welding Part 5: Welding of steel structures subject to high levels of fatigue loading Structural steel welding Part 6: Welding of stainless steel for structural purposes Welding of steel castings Qualification of arc-welders for welding of steels Qualification of arc-welders for welding of steel Qualification test for metal arc welders Qualification test for metal arc welders Welded steel tanks for oil storage Metal arc welding of Grade 275 reinforcing bar 9712: 1992 9606-1: 1994 9606-2: 1994 99561:1995 9956-2: 1995 9956-3: 1995 9956-4: 1995 13916: 1996 AS 3998-1992 AS/NZS 1554.Fusion welding Part 2: Aluminium and aluminium alloys Specification and approval of welding procedures for metallic materials Part 1: General rules for fusion welding Specification and approval of welding procedures for metallic materials Part 2: Welding procedures Specification and approval of welding procedures for metallic materials Part 3: Welding procedure test for the arc welding of steels Specification and approval of welding procedures for metallic materials Part 3: Welding procedure test for the arc welding of aluminium and its alloys Welding .5: 1995 AS/NZS 1554. Part 1: Guidelines for selection and use Non-destructive testingQualification and certification of personnel.Measurement of preheating temperature. interpass temperature and preheat maintenance during welding Equivalent Australian & New Zealand standards for AS/NZS ISO 3834-2 AS/NZS ISO 3834-1:1999 Quality requirements for welding.1: 2000 AS1554.6: 1994 AS 1988-1989 AS 2980-1987 NZS 4711:1984 NZS/ANSI/API 650:1993 NZS 4702:1982 NZS 4702:1982 (Source: AS/NZS ISO 3834:1999 Part 2) .2-1993 AS 1554.
1: Structural welding code 1998 steel AWS D1. Part1: Steels Approval testing of weldersFusion welding Part 2: Aluminium and aluminium alloys Specification and approval of welding procedures for metallic materials Part 1: General rules for fusion welding Specification and approval of welding procedures for metallic materials Part 2: Welding procedures Specification and approval of welding procedures for metallic materials Part 3: Welding procedure test for the arc welding of steels Specification and approval of welding procedures for metallic materials Part 3: Welding procedure test for the arc welding of aluminium and its alloys Welding .5: Equivalent American Standards for Steel Structures ISO standards listed in clause 3834-1: 1994 Quality requirements for welding.Fusion welding of metallic materials. Part 1: Guidelines for selection and use Non-destructive testingQualification and certification of personnel Approval testing of weldersFusion welding. Part 1: Guidelines for selection and use AS 3998Non-destructive testing2002 Qualification and certification of personnelGeneral engineering AWS D1.Fusion welding of 1:1999 metallic materials.WTIA – TECHNICAL NOTE 24 CHAPTER 3 Page 19 Table 3.Measurement of preheating temperature. interpass temperature and preheat maintenance during welding Equivalent American standards for AS/NZS ISO 3834-2 AS/NZS Quality requirements for ISO 3834welding.3: 1998 Structural steel welding sheet steel 9712: 1992 9606-1: 1994 9606-2: 1994 99561:1995 9956-2: 1995 9956-3: 1995 9956-4: 1995 13916: 1996 (Source: AS/NZS ISO 3834:1999 Part 2) .
Fusion welding of metallic materials. Part 1: Guidelines for selection and use AS 3998Non-destructive testing2002 Qualification and certification of personnelGeneral engineering AS 1665Welding of aluminium 1992 structures 9712: 1992 9606-1: 1994 9606-2: 1994 99561:1995 9956-2: 1995 9956-3: 1995 9956-4: 1995 13916: 1996 (Source: AS/NZS ISO 3834:1999 Part 2) .Measurement of preheating temperature. interpass temperature and preheat maintenance during welding Equivalent Australian and New Zealand standards for AS/NZS ISO 3834-2 AS/NZS Quality requirements for ISO 3834welding. Part 1: Guidelines for selection and use Non-destructive testingQualification and certification of personnel Approval testing of weldersFusion welding.Fusion welding of 1:1999 metallic materials.WTIA – TECHNICAL NOTE 24 CHAPTER 3 Page 20 Table 3. Part1: Steels Approval testing of weldersFusion welding Part 2: Aluminium and aluminium alloys Specification and approval of welding procedures for metallic materials Part 1: General rules for fusion welding Specification and approval of welding procedures for metallic materials Part 2: Welding procedures Specification and approval of welding procedures for metallic materials Part 3: Welding procedure test for the arc welding of steels Specification and approval of welding procedures for metallic materials Part 3: Welding procedure test for the arc welding of aluminium and its alloys Welding .6: Equivalent Australian and New Zealand Standards for Aluminium Structures ISO standards listed in clause 3834-1: 1994 Quality requirements for welding.
Part 1: Guidelines for selection and use Non-destructive testingQualification and certification of personnel Approval testing of weldersFusion welding.Measurement of preheating temperature.7: Equivalent Australian and New Zealand Standards for Pressure Equipment ISO standards listed in Clause 3834-1: 1994 Quality requirements for welding. interpass temperature and preheat maintenance during welding Equivalent Australian and New Zealand standards for AS/NZS ISO 3834-2 AS/NZS Quality requirements for ISO 3834welding.WTIA – TECHNICAL NOTE 24 CHAPTER 3 Page 21 Table 3. Part1: Steels Approval testing of weldersFusion welding Part 2: Aluminium and aluminium alloys Specification and approval of welding procedures for metallic materials Part 1: General rules for fusion welding Specification and approval of welding procedures for metallic materials Part 2: Welding procedures Specification and approval of welding procedures for metallic materials Part 3: Welding procedure test for the arc welding of steels Specification and approval of welding procedures for metallic materials Part 3: Welding procedure test for the arc welding of aluminium and its alloys Welding .Fusion welding of metallic materials. Part 1: Guidelines for selection and use AS 3998Non-destructive testing2002 Qualification and certification of personnelGeneral engineering Pressure equipment AS/NZS Welding and brazing 3992: qualification 1998 AS 17961993 Certification of welders and supervisors 9712: 1992 9606-1: 1994 9606-2: 1994 99561:1995 9956-2: 1995 9956-3: 1995 9956-4: 1995 13916: 1996 AS 44581997 NZS/BS 5500: 1997 NZS 1841: 1964 NZS/BS 2971: 1991 Pressure equipment manufacture Specification for unfired fusion welded pressure vessels Fusion welded pressure tanks Specification for Class II arc welding of carbon steel pipework for carrying fluids (Source: AS/NZS ISO 3834:1999 Part 2) .Fusion welding of 1:1999 metallic materials.
interpass temperature and preheat maintenance during welding Equivalent Australian and New Zealand standards for AS/NZS ISO 3834-3 AS/NZS ISO 3834-1:1999 Quality requirements for welding.Fusion welding.Fusion welding of metallic materials. Part 1: Guidelines for selection and use Non-destructive testingQualification and certification of personnel Approval testing of welders.General engineering Boiler and pressure vessel code Section IX: Welding and brazing qualifications 9712: 1992 9606-1: 1994 9606-2: 1994 99561:1995 9956-2: 1995 9956-3: 1995 9956-4: 1995 13916: 1996 AS 3998-2002 ASME BPVC IX: 1998 ASME BPVC I: 1998 ASME BPVC VIII:1998 Boiler and pressure vessel code Section I: Rules for the construction of power boilers Boiler and pressure vessel code Section VIII: Rules for the construction of pressure boilers Power piping Process piping ASME ANSI B31.Fusion welding Part 2: Aluminium and aluminium alloys Specification and approval of welding procedures for metallic materials Part 1: General rules for fusion welding Specification and approval of welding procedures for metallic materials Part 2: Welding procedures Specification and approval of welding procedures for metallic materials Part 3: Welding procedure test for the arc welding of steels Specification and approval of welding procedures for metallic materials Part 3: Welding procedure test for the arc welding of aluminium and its alloys Welding . Part1: Steels Approval testing of welders.3: 1996 (Source: AS/NZS ISO 3834:1999 Part 2) .Fusion welding of metallic materials.WTIA – TECHNICAL NOTE 24 CHAPTER 3 Page 22 Table 3.Measurement of preheating temperature.8: Equivalent American Standards for Pressure Equipment ISO standards listed in Clause 3834-1: 1994 Quality requirements for welding.1: 1995 ASME ANSI B31. Part 1: Guidelines for selection and use Non-destructive testingQualification and certification of personnel.
Part1: Steels Approval testing of weldersFusion welding Part 2: Aluminium and aluminium alloys Specification and approval of welding procedures for metallic materials Part 1: General rules for fusion welding Specification and approval of welding procedures for metallic materials Part 2: Welding procedures Specification and approval of welding procedures for metallic materials Part 3: Welding procedure test for the arc welding of steels Specification and approval of welding procedures for metallic materials Part 3: Welding procedure test for the arc welding of aluminium and its alloys Welding .Measurement of preheating temperature.Gas and liquid petroleum 1995 AS 16971981 AS 19581981 Gas transmission and distribution systems Gas and liquid petroleum submarine pipelines 9712: 1992 9606-1: 1994 9606-2: 1994 99561:1995 9956-2: 1995 9956-3: 1995 9956-4: 1995 13916: 1996 (Source: AS/NZS ISO 3834:1999 Part 2) .Pipelines. Part 1: Guidelines for selection and Use Non-destructive testingQualification and certification of personnel Approval testing of weldersFusion welding.9: Equivalent Australian and New Zealand Standards for Pipelines ISO Standards listed in Clause 3834-1: 1994 Quality requirements for welding.Fusion welding of 1:1999 metallic materials.WTIA – TECHNICAL NOTE 24 CHAPTER 3 Page 23 Table 3.Fusion welding of metallic materials. Part 1: Guidelines for selection and use AS 3998Non-destructive testing2002 Qualification and certification of personnelGeneral engineering AS 2885. interpass temperature and preheat maintenance during welding Equivalent Australian and New Zealand Standards for AS/NZS ISO 3834-3 AS/NZS Quality requirements for ISO 3834welding.2.
Standards quality requirements This standard is identical with and has been reproduced from ISO 3834-3:1994.3:1999 Quality requirements for welding . They provide a flexible framework for the control of welding in the following cases. Case 1 To provide specific requirements for fusion welding in contracts which require the manufacturer to have a quality system other than ISO 9001 or ISO 9002.Fusion welding of metallic materials .3.WTIA – TECHNICAL NOTE 24 CHAPTER 3 Page 24 3. .3 AS/NZS ISO 3834. It may however be more appropriate for AS/NZS ISO 3834-4 to be used in such cases. The requirements contained within this part may be adopted in full or may be selectively deleted by the manufacturer if not applicable to the construction concerned. Case 2 To provide specific requirements for fusion welding as guidance to a manufacturer developing a quality system. Case 3 To provide specific requirements for references in application standards which uses fusion welding as part of its requirements or in a contract between relevant parties.
Case 1 To provide specific requirements for fusion welding in contracts which require the manufacturer to have a quality system other than ISO 9001 or ISO 9002 and where the documented welding control has a minor importance to the overall integrity of the final construction. Case 3 To provide specific requirements for references in application standards which uses fusion welding as part of its requirements or in a contract between relevant parties.Elementary quality requirements This standard is identical with and has been reproduced from ISO 3834-4:1994.WTIA – TECHNICAL NOTE 24 CHAPTER 3 Page 25 3.4 AS/NZS ISO 3834. The requirements contained within this part of ISO 3834 may be adopted in full or may be selectively deleted by the manufacturer if not applicable to the construction concerned. .3. Case 2 To provide specific requirements for fusion welding as guidance to a manufacturer developing a quality system.Fusion welding of metallic materials .4:1999 Quality requirements for welding . They provide a flexible framework for the control of welding in the following cases.
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