This procedure applies to Pike construction activities. This procedure may also be applied to Subcontractors when invoked by Contract documents.

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Project Procedure SPECIAL PROCESS CONTROL 09/21/2012 PAGE 1 OF 7 1.

1 Project Procedure SPECIAL PROCESS CONTROL 09/21/2012 PAGE 1 OF PURPOSE The purpose of this procedure is to ensure that welding, post weld heat treatment, and nondestructive examination activities are accomplished in compliance with Project drawings and specifications, applicable codes and standards, and Contract requirements. 2.0 SCOPE This procedure applies to Pike construction activities. This procedure may also be applied to Subcontractors when invoked by Contract documents. 3.0 REFERENCES 3.1 Project specific Welding Procedures (if required) 3.2 Project specific Nondestructive Examination Procedures (if required) 3.3 Project specific Random Radiography Requirements 3.4 Project Procedure P 1 4, Quality Control Functions and Responsibilities (Construction Site) 3.5 Project Procedure P 1 5, Quality Control Personnel Assignments (Construction Site) 3.6 Project Procedure P 1 8, Quality Control Records 3.7 Project Procedure P 1 18, Quality Control Personnel Training and Qualification 3.8 Project Procedure P 1 19, Reading for Understanding 3.9 American Society for Nondestructive Testing (ANST) ASNT SNT TC 1A (or CP 189), Personnel Qualification and Certification in Nondestructive Testing 3.10 American National Standards Institute (ANSI)/American Welding Society (AWS) D1.1, Structural Welding Code

2 PAGE 2 OF DEFINITIONS 4.1 Nondestructive Examination (NDE) is testing to detect internal and concealed surface defects in materials using techniques that do not damage or destroy the item being tested. The most common types of NDE are radiography (RT), ultrasonic (UT), magnetic particle (MP), and liquid dye penetrant (LP) methods. Depending on the applicable code, visual examination (VT) may also require control as an NDE process. 4.2 Post Weld Heat Treatment (PWHT) is the process of removing stresses in welds using heat applied in accordance with approved procedures. 5.0 RESPONSIBILITIES 5.1 Personnel responsibilities and assignments are defined in the procedures for Quality Control Functions and Responsibilities (Construction Site) and Quality Control Personnel Assignments (Construction Site) (References 3.4 and 3.5). 5.2 The Site Quality Control Manager is responsible for providing overall construction site administration of this Quality Program for control of welding, NDE, and PWHT activities. Project requirements for special processes shall be defined to all involved parties in accordance with the Reading for Understanding procedure (Reference 3.8). 6.0 PROCEDURE 6.1 WELDING CONTROL Welding and post weld heat treatment activities (including requirements for welding procedures, weld material control, and welder qualification) shall be in accordance with Project specific Welding Procedures (Reference 3.1), Project specifications, and Contract requirements. NDE activities shall be in accordance with Project specific Nondestructive Examination Procedures (Reference 3.2), applicable codes, standards, and Project specifications Upon receipt of the engineering drawings and specifications, the Construction Site Supervisor or designee, in coordination with the Site Quality Control Manager, shall issue the documents to the responsible Project Manager.

3 PAGE 3 OF The Site Quality Control Manager or designee shall prepare a form QF 1 15 A, Welding Tracking Chart (see Section 7.0), for welds requiring NDE or PWHT. This form may be used for assignment of any required inspection points and documentation of completed welding control and inspection/nde activities Field drawings, sketches, isometrics, weld maps, etc., shall be used to identify and document inspection and process control procedures and activities. On large Projects, a construction Welding, PWHT, and NDE tracking database program may be used. This program may also be used on smaller Projects as determined by site management The responsible Construction Supervisor or Field Engineer or designee shall control field welding, PWHT, and NDE activities in accordance with the following (see Paragraphs through ) Requisition craft welding personnel, as necessary, and coordinate with the Site Quality Control Manager on the number of craft welders to be qualified, and the applications/welding processes to which the welders will be assigned. A Welders Qualification Log Form will be provided with the Project specific Welding Procedures (Reference 3.1) and shall be maintained for all welders requiring qualification Assign and supervise craft personnel in the performance of fit up, welding operations, and PWHT activities in accordance with applicable specifications, procedures, and/or drawings Direct welding, NDE, and PWHT activities in compliance with applicable engineering drawings and special process procedures Document completion and verification of welding, PWHT, and NDE activities on form QF 1 15 A, Welding Tracking Chart (see Section 8.0). Appropriate information should also be recorded on field drawings, sketches, isometrics, and weld maps. Each completed weld connection inspected and signed off should be marked in the field for tracking purposes Applicable information from form QF 1 15 A, Welding Tracking Chart (see Section 8.0), or other recording methods shall be input into the Welding, PWHT and NDE Tracking database program when it is used to track these activities The Site Quality Control Manager or designee, depending on Project size, shall provide overall administration of the site welding program, including performance of the following (see Paragraphs through ).

4 PAGE 4 OF Ensure that sufficient quantities and types of welding equipment and welding filler materials are purchased to support the construction schedule. Ensure the following are required for all weld material purchases: a. Welding consumables shall be supplied by Pike approved manufacturers only. Contact the QA/QC Manager for a current list of approved manufacturers. b. Mill Test Reports or Certificates of Compliance shall be provided for welding consumables and for all steel parts and assemblies. c. Low hydrogen and low hydrogen/iron powder electrodes shall be purchased in hermetically sealed containers. d. Welding materials shall be identified in accordance with the applicable American Welding Society (AWS) Standard. e. All Bare rods shall be flag tagged, color coded, or stamped to denote identification Ensure welding consumables are received and stored in accordance with the following: a. Quantity and type are verified against purchase order. b. Accepted welding consumables are kept in a designated rod room. c. Welding consumable test reports are transmitted to the Site Quality Control Manager for review, acceptance, and retention. d. The rod room attendant issues only welding consumables and associated heat numbers accepted by QA/QC. e. Approved welding consumables are stored in their original packaging until opened for issue. f. Coated electrodes shall be stored in heated ovens after the sealed package has been opened. The temperature of heated ovens shall be in accordance with the manufacturer s instructions or as noted in the Project specific Welding Procedures (Reference 3.1) Ensure welding consumables are issued and returned in accordance with the following: a. Low hydrogen electrodes shall be issued to all welders in electric rod caddies to be plugged in at all times. b. Bare rod shall be issued to welders in covered plastic tubes.

5 PAGE 5 OF 7 c. At the end of each shift, unused welding consumables are returned to the rod room for proper storage and control Review drawings, specifications, and materials to be welded to ensure appropriate qualified welding procedures are available to cover the work. If necessary, request preparation and qualification of new Welding Procedures. Contact the QA/QC Manager or designee to resolve Welding Procedure issues Ensure that required welding and PWHT documentation is prepared, and assign the welding procedure to be used on each welded joint Assure each welder has been qualified in accordance with the following: a. Each welder is qualified for the applicable welding procedure prior to start of welding. b. A Pike representative supervises/witnesses welders in the performance of their qualification tests. c. Performance testing may be performed on site or at a Pike approved off site location. d. Required specimen testing is performed by an approved testing laboratory. e. Upon satisfactory completion of the performance weld test, a Welder Performance Qualification (WPQ) Record shall be completed and retained in the quality control files Review welder qualifications periodically to ensure welders maintain their qualifications. Welders shall be re qualified as required by the applicable codes, standards, and Project specific Welding Procedures Assure each welder is assigned a unique symbol to identify his or her work. The symbol shall be stamped adjacent to each weld as required by Project Procedures or code of construction. Assure adequate welder symbol control. Monitor weld joint fit up, production welding activities, and PWHT operations to ensure conformance to applicable specifications and drawing (see Reference 3.1). Conduct independent inspections and verifications in support of required activities. Note: Additional welding requirements may be included in the Project specific Welding Procedures. 6.2 NONDESTRUCTIVE EXAMINATION The Site Quality Control Manger shall monitor the performance of NDE as follows.

6 PAGE 6 OF Ensure NDE Subcontractors are approved in accordance with Pike procedures before the start of NDE activities Ensure the NDE Subcontractor has an approved procedure (written practice) for qualification and certification of NDE personnel in accordance with the American Society for Nondestructive Testing document ASNT SNT TC 1A or CP 189 (Reference 3.9.1) as required by Project Procedures or the code or construction Ensure personnel performing and interpreting NDE are qualified and certified as NDE Level II or Level III in the appropriate NDE method Ensure the NDE Subcontractor s NDE procedures are acceptable to meet Project requirements Ensure that all NDE equipment is correct, functional, and appropriately calibrated Confirm that radioactive materials licenses and registrations for proposed radiationproducing devices are correct and current Monitor the performance of NDE at the work site to assure correct, complete, and safe NDE performance in accordance with safety regulations, applicable codes, standards, and Project specifications Confirm correct use of barricades, warning signs, and radiation monitoring devices during field radiographic operations Review NDE reports and radiographic film interpretations for acceptance. Assure that reports, radiographic film quality, and final weld quality meet the requirements of the specification and the applicable code. Radiographic film should be stored in accordance with the guidelines in the Quality Control Functions and Responsibilities (Construction Site) procedure (Reference 3.4) where applicable. Note: Pike personnel performing interpretation of radiographic film shall be certified Level II radiographic film interpreters, as required by applicable codes and Project specifications Subcontractor NDE procedures and personnel qualification records shall be forwarded to the Construction Site Supervisor or Site Quality Control Manager for retention in site files The Site Quality Control Manager or designee shall complete form QF 1 15 B, Welding Status Report (see Section 8.0), on a weekly basis and submit to the Construction Site Supervisor or designee. Weld reject rates shall be calculated based on linear inches of weld radiographed and rejected unless other methods of calculation are required by the Contract.

7 PAGE 7 OF When a welder has welded 20 welds, one (1) of that lot of 20 welds, 5% shall be radiographed. Progressive examination is then followed in accordance with each Project s Random Radiography Requirements (Reference 3.3) for that lot of welds. This methodology shall be applied for each welder, for each lot of 20 of that specific welders random radiography welds Pike personnel performing and/or interpreting NDE methods shall be qualified and certified in accordance with the appropriate Pike procedures for the qualification and certification of NDE personnel. NDE methods performed by Pike NDE personnel shall be applied and interpreted in accordance with appropriate Pike NDE procedures. 7.0 ATTACHMENTS None 8.0 FORMS 8.1 Quality Form QF 1 15 A, Welding Tracking Chart 8.2 Quality Form QF 1 15 B, Welding Status Report 9.0 REVISIONS AND APPROVALS Revision Level Revision Date Revision Description Department Head (Approver) 0 01/15/2010 Original Issue Brian R. Hay 1 07/27/2011 Updated logo and company name N/A 2 09/21/2012 General updating and editing Brian R. Hay

8 FORM 8.1 PAGE 1 OF 1 WELDING TRACKING CHART WELDING TRACKING CHART Client: Job Number: Project: LEGEND: BW (BUTTWELD); SW (SOCKET WELD); NW (NOZZLE WELD); TSW (THREADED SEAL WELD) NDE Weld Drawing Line No. No. No. WPS Line Typ Weld Class Weld STN Mat l Pipe Wall PWH Size Thk T BHN UT RT MT NDE IN. VIS INSP Reject Accept PMI or Reject R1 R2 REJIN Carbon Inches Alloy Inches Contr. QC Comments Quality Form QF 1 15 A, Rev. 2 Last Revised: 06/01/2012 Project Number: Project Procedure P 1 15 Page 1 of 1

9 FORM 8.2 PAGE 1 OF 1 WELDING STATUS REPORT WELDING STATUS REPORT Project: Client: Job No.: Week Ending: Element of Measure WEEKLY STATISTICS BW TO DATE SW TO DATE Welds BW Completed SW Completed Total Butt Welds RT d/ut d Socket Welds PT d/mt d Welds Rejected BW Welds RT d/ut d SW PT d/mt d Inches Quantity Inches Quantity Inches Quantity % Inches % Quantity % Inches % Quantity % Inches % Quantity Quantity % Quantity Quantity % Weekly Total Last Weekly Total Job Total Quality Form QF 1 15 B, Rev. 2 Last Revised: 06/01/2012 Project Number: Project Procedure P 1 15 Page 1 of 1

SECTION WELDING

SECTION WELDING SECTION 05050 WELDING PART 1 GENERAL 1.1 REFERENCES A. The following is a list of standards which may be referenced in this section: 1.2 DEFINITIONS 1. American Society of Mechanical Engineers (ASME):