AWS EG4 0-1996 Guide for the Training and Qualification of Welding Personnel Level III - Expert Welder《专业-三级焊工的培训和鉴定指南》.pdf

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1、 STD-AWS EGIi.0-ENGL 1996 E 078Y265 0518165 851 Q AWS EG4.0-96 the Training and Qualification of Welding Personnel Level 111 - Expert Welder American Welding Society STDOAWS EG4-0-ENGL L99b 07842b5 0518Lbb 798 AWS EG4.-96 Guide for the Training and Qualification of Welding Personnel Level Ill - Expe

2、rt Welders Funded by U. S. Department of Education Grant V .244B30006 Prepared by AWS Education Department Under the Direction of AWS Education Grant Committee Approved by AWS Board of Directors Abstract This guide contains information to assist education and training facilities in the development a

3、nd administration of competency-based training that leads to the qualification and certification of trainees in accordance with the requirements of AWS QC12, Specification for the Qualification and Certi$cation for Level III - Expert Welders. Included are sections on curriculum and qualification gui

4、delines, as well as recommendations for facility planning, materials, equipment, and tools. American Welding Society 550 W. W. Ldauna Road, Miami, Florida 33126 - STD*AWS EG4-0-ENGL L99b = 0784265 05LBLb7 b24 Policy Statement on Use of AWS Standards All standards of the American Welding Society (cod

5、es, specifications, recommended practices, methods, guides, etc.) are voluntary consensus standards that have been developed in accordance with the rules of the American National Standards Institute. When AWS standards are either incorporated in, or made part of, documents that are included in feder

6、al or state laws and regulations, or the regulations of other governmental bodies, their provisions carry the full legal authority of the statute. In such cases, any changes in those AWS standards must be approved by the governmental body having statutory jurisdiction before they can become a part o

7、f those laws and regulations. In all cases, these standards carry the full legal authority of the contract or other document that invokes the AWS standards. Where this contractual relationship exists, changes in or deviation from requirements of an AWS standard must be by agreement between the contr

8、acting parties. International Standard Book Number: 0-87 17 1484-1 American Welding Society, 550 N.W. LeJeune Road, Miami, Florida 33126 01996 by American Welding Society. All rights reserved. Printed in the United States of America Note: By publishing this standard, the American Welding Society doe

9、s not insure anyone using the information it contains against any liability arising from that use. Publication of a standard by the American Welding Society does not carry with it any right to make, use, or sell any patented items. Users of the information in this standard should make an independent

10、 investigation of the validity of that information for their particular use and of the patent status of any items referred to herein. This standard is subject to revision at any time by the AWS Education Committee. Comments (recommendations, additions, or deletions) and any pertinent data that may b

11、e of use in improving this standard are welcomed, and should be addressed to: Director of Education, American Welding Society, 550 N. W. LeJeune Road, Miami, Florida 33126. Such comments will receive careful consideration by the AWS Education Committee, and the author of the comments will be informe

12、d of the committees response to the comments. Guests are invited to attend all meetings of the AWS Education Committee to express their comments verbally. Procedures for appeal of an adverse decision concerning all such comments are provided in the Rules of Operation of the Technical Activities Comm

13、ittee. A copy of these rules can be obtained from the American Welding Society, 550 N. W. LeJeune Road, Miami, Florida 33126. STD.AWS EG4.0-ENGL 199b = 0784265 0518LbB 5b0 E iii Personne I AWS Education Grant Committee F: G. Dehurier; Chairman N. C. Wall, Vice Chairman R. L. OBrien, Project Manager

14、J. Bartley S. W Bollinger E. R. Bohnart E Cusma J. E. Greer *S. C. Helzer J. Hoefi D. G. Howden J. H. Ivy *J. E Key L. G. Kvidahl R. Murray L. W Myers *C. E. Pepper A.L. Petroski R. C. Pierce *R. J. Teuscher American Welding Society American Welding Sociey American Welding Society Welding Consultant

15、 Esab Welding Welding Procedure Specifications (WPSs), AWS D1.1, Structural Welding Code - Steel, API Standard 1104, Standard for Welding Pipelines and Related Facilities, ASME, Boiler and Pressure Vessel Code - Section ZX and In-House (Employer) Standards. 2.3.5 Welding Inspection and Testing. Poss

16、esses the prerequisite knowledge and interpretation skills of welding inspection and testing for a Level II - Advanced Welder. Demonstrates the ability to interpret welding and inspection requirements for various assignments. Interprets welding inspection results from visual examination, penetrant t

17、esting and magnetic particle testing. Prepares inspection reports. Has a fundamental understanding of ultrasonic and radiographic testing results. Performs visual examination, bend, penetrant and magnetic particle testing. Demonstrates the ability to take or suggest corrective actions. 2.3.6 Arc Wel

18、ding. Possesses the prerequisite arc welding skills of a Level II Advanced Welder. Demonstrates the ability to troubleshoot welding setups and and processes. Participates in the specification of equipment selection and purchase. Performs a variety of hands-on tasks while supervising others during we

19、lding. Employs first level inspection practices during various stages of welding. Has an understanding of welding metallurgy including; mechanical and chemical properties of metals, weld zone metallurgy, residual stress and control of distortion. Demonstrates knowledge of joint design and preparatio

20、n, selection of materials, arc welding application, weld quality, weld repairs (corrective actions) and welding inspection. Sets up the components and accessories of a complete welding system. Sets up shielded metal arc welding operations, for all position fillet and groove welding on an unlimited t

21、hickness range of carbon steel and stainless steel plate and pipe. Sets up gas metal arc welding (short circuit transfer) operations, for all position fillet and groove welding on an unlimited thickness range of carbon steel plate and pipe. Sets up gas metal arc welding (spray transfer) operations,

22、for a limited position, unlimited thickness range of carbon steel plate and pipe. Sets up gas STDmAWS EG4-0-ENGL L99b 07842b5 05L817b b37 6 metal arc welding (spray transfer and pulsed arc) for all positions fillet and groove welding an unlimited thickness range of aluminum plate and pipe. Sets up f

23、lux cored arc welding operations, for all position fillet and groove welding on an unlimited thickness range of carbon steel plate and pipe. Sets up gas tungsten arc welding operations, for all position fillet and groove welding within a limited thickness range of carbon steel, stainless steel and a

24、luminum sheet and tubing. Sets up and performs gas tungsten arc welding operations, for limited position fillet and groove welding within a limited thickness range of nickel, copper, magnesium and/or titanium sheet metals. 2.3.7 Oxyfuel Gas Cutting. Possesses the prerequisite oxyfuel gas cutting ski

25、lls of a Level II Advanced Welder. Demonstrates the ability to troubleshoot cutting setups and and processes. Participates in the specification of equipment selection and purchase. Performs a variety of hands-on tasks while supervising others during cutting. Employs first level inspection practices

26、during various stages of cutting. Sets up and performs manual oxyfuel gas cutting operations that include straight and shape cutting, beveling, and weld removal (weld washing) for various product forms including plate and pipe. Sets up and operates machine oxyfuel gas cutting equipment (track burner

27、) to perform straight cutting and beveling operations. Demonstrates knowledge of preparation and selection of materials, cutting applications, cut quality and cut surface repairs (corrective actions). Performs minor external repairs to equipment and accessories. 2.3.8 Arc Cutting and Gouging. Posses

28、ses the prerequisite arc cutting skills of a Level II Advanced Welder. Demonstrates the ability to troubleshoot cutting setups and and processes. Participates in the specification of equipment selection and purchase. Performs a variety of hands-on tasks while supervising others during cutting. Emplo

29、ys first level inspection practices during various stages of cutting. Sets up and performs manual air carbon arc cutting operations on various product forms including plate and pipe. Sets up and performs manual plasma arc cutting operations on various product forms including plate and pipe. Sets up

30、and operates machine plasma arc cutting equipment (track burner) to perform straight cutting and beveling operations. Demonstrates knowledge of preparation and selection of materials, arc cutting applications, cut quality and cut surface repairs (corrective actions). Performs minor external repairs

31、to equipment and accessories. 2.4 Level 111 - Expert Welder Occupational Conditions. 2.4.1 Work Environment. Level III - Expert Welders are employed in a wide range of industries that use welding and welding-related tasks during the course of daily operations. This range of industries includes small

32、, medium, and large union or non-union facilities. 2.4.2 Occupational Hazards. As is the case in most metalworking industries, the potential for bodily harm and hazardous situations exists. High electrical currents and voltages are used to operate machinery and welding equipment. Machinery for shear

33、ing, forming, and punching various thicknesses of materials is used. Flammable and other compressed gases are used during flame cutting and welding operations. The employee may be in direct contact with heavy sections during lifting and positioning operations. Welders may work in enclosed, restricte

34、d spaces, and at times at high elevations and in awkward positions. An undesirable noise level is sometimes generated during the production process. The welder must take safety precautions, and be safety conscious at all times. STD*AWS EGi-O-ENGL 199b 07842b5 0518177 573 7 2.4.3 Worker Profile. This

35、 position involves leadership, concentration, decision making, and physical tasks. 2.4.3.1 Physical Requirements. Level III - Expert Welders must meet the physical requirements established by the employer. 2.4.3.2 Employability. Level III - Expert Welders should exhibit good leadership, written, ora

36、l, and listening skills, in addition to competency in problem solving and decision making. These individuals should display good judgement, dependability and interact well with people. AWS Level III - Expert Welders are capable of performing welding inspection that includes visual examination, bend

37、, penetrant and magnetic particle testing. They are able to interpret test results and prepare inspection reports. These individual may be employed as a working lead- or foreperson and have layout and fitting skills with the ability to work from complex drawings. AWS Level III - Expert Welders who a

38、chieved certification through trainin p. examination and testing possess a minimum of two years of multiple welding process work experience (with a minimum of 6 months fabrication experience that includes drawing interpretation, layout and fitup duties) that has a direct relationship to weldments fa

39、bricated to a standard or employers qualified welding procedure prior to issuance of Level III - Advanced Welder Certification. AWS Level III - Expert Welders who achieved certification through examination and testing possess a minimum of seven years welding work experience consisting of three years

40、 in a single process and 4 years using multiple processes (with a minimum of 6 months fabrication experience that includes drawing interpretation, layout and fitup duties) that have a direct relationship to weldments fabricated to a standard or employers qualified welding procedure prior to issuance

41、 of Level III - Advanced Welder Certification. AWS Level III - Expert Welders, depending on AWS QC12 written examination options, may enter the workplace as AWS QCl Certified Welding Inspectors (CWI) or Certified Associate Welding Inspectors (CAWI). AWS Level III - Expert Welders, depending on AWS Q

42、C12 performance qualification options, may enter the workplace as AWS QC7 Certified Welders possessing welder certifications to a recognized standard or employers qualified welding procedure specification. 2.4.3.3 Education. Level III - Expert Welder training may be accomplished through postsecondar

43、y, vocational-technical schools, junior colleges, universities, apprenticeship or employer- based welder training programs. Sufficient workplace skills (i.e. foundation skills such as: reading, writing, math, science, communication skills, adaptability skills, employability skills and leadership ski

44、lls) are required to complete requisite welding related knowledge and skills training. AWS QClO, Entry Level Welder and AWS QCll, Level II - Advanced Welder skills achieved and substantiated through traininghesting or testing alone are a prerequisite to AWS QC12 Level III - Expert Welder training. C

45、urrent AWS QCl Certified Welding Inspectors (CWI) or Certified Associate Welding Inspectors (CAWI), with QCl CWI examination scores 72% or higher, shall be recognized as having met the requirements for AWS QC12 Expert Welder written examination (refer to section 5). Current AWS QC7 Certified Welders

46、 shall be recognized as having met the requirements for AWS QC12 Expert Welder performance qualifications, provided said certifications meet or exceed the requirements set forth in the AWS QC12 - Expert Welder Program. (refer to section 4) 8 LEVEL 111 - EXPERT WELR PROFILE BASIC SKILLS AND KIJOWLEID

47、GE * *OMUNICATON *MATHEMATCS *LEADERSHIP ORANIE NFORMTN INTO TASK SEENCNG WRTE TECNCAL REFORTS ENTRY LEVEL and information review and testing (formative testing) activities which guide the instructor in reviewing and assessing the trainees performance of the learning objective. Knowledge- related le

48、arning activities are brought to a close with the trainees successful completion of a related information test (formative testing). Performance-related learning activities provide the instructor with a means by which to guide the trainee in attaining the objective. Utilizing the now-acquired technic

49、al information to guide his or her actions, the trainee receives a demonstration of the objective, practices performing it until an acceptable level of skill and confidence is gained, and takes a performance test (i.e. performance qualifications and written examination) of the same to confirm mastery of the objective. Other performance-related activities may be included in the basic sequence, but the demonstration-practice-performance trilogy is fundamental to ordering performance-related activities. Closed Book Examination: A practical knowle