PFI TB-3-2013 GUIDELINES CLARIFYING RELATIONSHIPS AND DESIGN ENGINEERING RESPONSIBILITIES BETWEEN PURCHASERS ENGINEERS AND PIPE FABRICATOR OR PIPE FABRICATOR ERECTOR.pdf

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1、PFI Technical Bulletin TB-3 Denotes revision (Revised December 2013) GUIDELINES CLARIFYING RELATIONSHIPS AND DESIGN ENGINEERING RESPONSIBILITIES BETWEEN PURCHASERS, ENGINEERS AND PIPE FABRICATOR OR PIPE FABRICATOR ERECTOR Prepared by Pipe Fabrication Institute Engineering Committee All PFI Standards

2、 are advisory only. There is no agreement to adhere to any PFI Standard and their use by anyone is entirely voluntary. Copyright by PIPE FABRICATION INSTITUTE Dedicated to Technical Advancements and Standardization in the Pipe Fabrication Industry Since 1913 USA 511 Avenue of Americas, # 601 New Yor

3、k, NY 10011 CANADA 655, 32ndAvenue, # 201 Lachine, QC H8T 3G6 WEB SITE www.pfi-institute.orgPFI Technical Bulletin TB-3 Denotes revision (Revised December 2013) GUIDELINES CLARIFYING RELATIONSHIPS AND DESIGN ENGINEERING RESPOSIBILITIES BETWEEN PURCHASERS, ENGINEERS AND PIPE FABRICATOR OR PIPE FARICA

4、TOR ERECTOR FOREWORD The Pipe Fabrication Institute publishes these guidelines for the use and convenience of designers and consulting engineering firms, for pipe fabricators and fabricator erectors generally, and for the customers of each of them, in order to furnish some intelligent and practical

5、observations concerning the ordinary and accepted responsibilities which are incurred by the design consultant and by the pipe fabricator or pipe fabricator erector in connection with large piping jobs. It has been the aim of those responsible for this publication to furnish guidance to eliminate or

6、 reduce misunderstandings which have arisen in the industry due to lack of impartial definition concerning the area of responsibility which the participating groups assume on these jobs. The guidelines will be of particular interest in situations where no contractual provision is made affecting thes

7、e imprecise areas. It is possible that the guidelines might be used by contracting parties choosing to do so simply by making reference to them in the contract. We recognize that no guides can possibly provide for every contingency, which might arise. For this reason the work has been directed towar

8、d the normal and usual situation, which from time to time confronts the designer and the fabricator or erector. Obviously, use of the guidelines is left to the discretion and judgment of the contracting parties, but it is our belief that an impartial and objective guidepost will find quick support i

9、n the trade, will be welcomed by designers, fabricators, and erectors and appreciated, especially, by their customers. GUIDELINES 1. GENERAL - BIDDING AND CONTRACTOR 1.1 Bid and contract documents shall specify the specific code or code sub-section applicable to the piping systems. 2. PIPING FABRICA

10、TOR/ERECTOR RESPONSIBILITY 2.1 Some major areas of responsibility of the Piping Fabricator or Erector encompass the following: 2.1.1 Furnish materials in compliance with Purchasers specifications, standards, approved construction drawings and applicable code requirements. 2.1.2 Recommend alternate m

11、aterials, fabricator or construction methods and procedures - which comply with applicable codes - whenever they provide advantages. 2.1.3 Prepare all fabrication sketches and details as required for fabricators regular production procedures and furnish copies in reasonable quantities as required by

12、 Purchasers Engineers for their review, approval and records. 2.1.4 Advise Purchasers Engineers upon discovery of any conflict between their specifications and approved construction drawings and/or deviation from applicable codes, standards and any other condition, which may adversely affect the wor

13、k. 2.1.5 Confirm accuracy and compliance of fabricated assemblies in accordance with Purchasers approved construction drawings within the dimensional tolerances of the current PFI Standard ES-3, irrespective of reviews of fabricators sketches by Purchasers Engineers. 2.1.6 Provide the services of ex

14、perienced technical personnel for performing shop and field non-destructive examination in conformance with Purchasers requirements and code procedures. 2.1.7 Advise Purchasers Engineers currently of any conditions of material procurement that adversely affect delivery and erection schedules and pro

15、vide suggestions for available substitutes where feasible. 2.1.8 Comply with code and specification requirements applicable to fabrication and non-destructive examination including required data reports. PFI Technical Bulletin TB-3 Denotes revision (Revised December 2013) 2.1.9 Maintain quality assu

16、rance and quality control program as required by the applicable code. 3. PURCHASING ENGINEERS RESPONSIBILITY 3.1 Some major areas of responsibility of Purchasers Engineers on piping projects encompass the following: 3.1.1 The presentation of designs and materials by construction drawings, specificat

17、ions and other documents, which are adequate, suitable and acceptable for the intended service conditions and environment. 3.1.2 Approved construction drawings shall be readable, uncluttered and complete with accurate overall and intermediate dimensions and elevations. Where applicable, they shall r

18、eflect requirements of built-in pitch and include erection positions before cold springing, and points of all cold spring gaps, with each delineated by three plane dimensions. They shall also indicate weld size for support and special attachments. 3.1.3 Adequate and consistent identification referen

19、ces to all valves, equipment and specialties covered by Purchasers approved drawings and specifications. 3.1.4 Piping flexibility analysis, where required, shall include pipe line deflections at intermediate and terminal points for all required conditions. 3.1.5 Provide in the design, adequate clear

20、ance between piping systems, equipment, facilities and structures to permit erection and free movement from thermal changes without any fouling or undesired interferences. 3.1.6 Indicate on approved construction drawings actual locations of field welds, which are mandatory due to construction condit

21、ions, (floors, walls, columns, etc.). 3.1.7 Provide adequate drawing designs and operational procedures for all temporary piping requirements such as “blow out”, cold pull, flushing, chemical cleaning and leak testing. 3.1.8 Specify all non-destructive examination requirements and the applicable acc

22、eptance standards that are in excess of applicable code requirements. 3.1.9 Advise the location for inspection and acceptance of shop fabrication as well as the procedure for notification of acceptance or the reason for rejection. 3.1.10 Provide personnel qualified to perform inspection and interpre

23、tation of nondestructive examination results when source inspection of fabrication is required. 3.1.11 Provide drawing release schedules at periodic intervals, compatible with fabrication requirements for erection compliance on entire project scope. Consult with fabricator/erector before implementin

24、g such changes to ensure all factors are considered adequately. 3.1.12 Furnish reproducible or a reasonable quantity of construction drawings, specifications and other documents, required by the Piping Fabricator and/or Erector to accomplish his work. 3.1.13 Furnish a list of all Purchaser/Owner sup

25、plied material. This list should identify the type of fitting or pipe, type and grade of material, quantity, valve tags, commodity code (if identified by that number), suppliers name, and delivery date to fabricator. This information assists the fabricator in scheduling work through the shop, and id

26、entifies possible material shortages in advance. Exotic/Long lead pipe material should also include a list of pipe lengths by size, schedule, and material to assist the fabricator in determining the most efficient use of material and minimize intermediate welds. Dimensional drawings (cut sheets), sh

27、ould be provided for all non-standard components, such as valves 3.1.14 Furnish all information necessary, such as required NDE, third party inspection, documentation, or required code stamp (i.e. ASME Section I, Table PW-11 for Section I code , or Boiler External Piping, as defined by ASME B31.1, P

28、aragraph 100.1.2). 3.1.15 Where an offset is required between adjacent longitudinal pipe seams, the engineer shall specify the orientation of the weld seams on adjoining pipe spools that are not part of the fabricators scope. CURRENT INDEX OF 2014-2015 PFI STANDARDS A complete list of PFI members an

29、d available membership CHARTER MEMBERS CONTRACTOR MEMBERS ASSOCIATE MEMBERS AFFILIATE MEMBERS HONORARY MEMBERS Associate and Affiliate member contributors Walter Sperko Sperko Engineering Services, Inc. Greensboro, NC Thomas Warrelmann Victaulic Company of America Easton, PA Sheryl Michalak Welding

30、Outlets, Inc. Houston, TX PFI Standards and Technical Bulletins are published to serve proven needs of the pipe fabricating industry at the design level and in actual shop operations. Hence, such needs are continually considered and reviewed by the Engineering Committee of the Pipe Fabrication Insti

31、tute to provide recommended procedures, which have been demonstrated by collective experiences to fulfill requirements in a manner for Code compliance. However, as the PFI Standards are for minimum requirements the designer or fabricator always has the option of specifying supplementary conditions in the form of requirements beyond the scope of the PFI publications.