MATERIAL REQUISITION FOR BOLTS AND NUTS

Transcription

1 Title: MATERIAL REQUISITION FOR BOLTS AND NUTS Page: 1 of 12 MATERIAL REQUISITION FOR BOLTS AND NUTS JUN-2013 ISSUED FOR APPROVAL M. KAMALOU A.MOHAMADIZADE A.MOHAMADIZADE REV. DATE STATUS PREPARED BY CHECKED BY APPROVED BY DOCUMENT REVISIONS

2 Title: MATERIAL REQUISITION FOR BOLTS AND NUTS Page: 2 of 12 REVISION REVISION INDEX REVISION PAGE PAGE X 41 2 X 42 3 X 43 4 X 44 5 X 45 6 X 46 7 X 47 8 X 48 9 X X X X APENDIXS

3 Title: MATERIAL REQUISITION FOR BOLTS AND NUTS Page: 3 of 12 TABLE OF CONTENTS 1 SCOPE OF SUPPLY 4 2 GENERAL SUPPLY SPECIFICATION 5 3 TECHNICAL REQUIREMENTS OF SUPPLY 5 4 INSPECTION AND TESTING 7 5 INSPECTION AND TESTING 8 6 PERMISSIBLE SUBSTITUTIONS 9 7 INSPECTION AND TEST PLAN 10

4 Title: MATERIAL REQUISITION FOR BOLTS AND NUTS Page: 4 of 12 1 SCOPE OF SUPPLY 1.1 Bulk Material Supply Refer to MTO 900-BOM-A4-PD-0005

5 Title: MATERIAL REQUISITION FOR BOLTS AND NUTS Page: 5 of 12 2 GENERAL SUPPLY SPECIFICATION 2.1 Scope The requirements of this specification for the supply of bolting supplement those required by the ITEM DESCRIPTION shown in the Material Requisition. 2.2 Reference Documents API ASTM ANSI American Petrol Institute American Society for Testing and Material American National Standard Institute And all others codes, standards and specification indicated in the ITEM DESCRIPTION, or in any reference document. Editions and/or issue dates of Codes, Standards and Specifications shall be the edition as of Any conflict between the various requirements within, or attached to, the Material Requisition and the reference Codes, Standards and Specifications, shall be brought to NPCRT attention for clarification. 3 TECHNICAL REQUIREMENTS OF SUPPLY 3.1 Marking The following shall be stamped on all bolts and nuts: - Manufacturer's identification mark - Symbol for identification of material Stamps shall be placed on one end of stud bolts, on the head of machine bolts and on one nut face.

6 Title: MATERIAL REQUISITION FOR BOLTS AND NUTS Page: 6 of Packing, Protection during Transit and Long Storage Instructions Packing and protection during transportation to site shall be adequate to protect the bolts & nuts from any damage and corrosion during transit from point of manufacture to after arrival at job site under conditions that may involve multiple handling, shocks and weathering, extended storage, exposure to moisture and sea atmosphere and to the possibility of pilferage. Goods must withstand 1 (one) year transit conditions without suffering damages. Vendor shall describe in his bid the type of packing and protection; type of packing and protection shall be specified in the Purchase Order (PO) Vendor shall supply Instructions for Long Storage (LSI) for a further 2 (two) years storage under site conditions. LSI shall cover the following topics: - description of packing and description of protections given for transit; - storage facilities and procedures for conservative maintenance/procedures during storage. 3.3 General Requirements Bolt threads shall be (ref. ANSI B1.1) class 2: - UNC up to 1 inch - 8UN from 1 1/8 inch and larger Stud bolt lengths shall be the effective thread length, excluding the height points Stud bolts shall be full threaded length with continuous threads. Height points shall be rounded or chamfered.

7 Title: MATERIAL REQUISITION FOR BOLTS AND NUTS Page: 7 of 12 4 INSPECTION AND TESTING 4.1 General Requirements All bolting prepared for NPCRT inspection shall have passed a preliminary inspection made by the Manufacturer's Quality Control. 4.2 Material Inspection Certification shall be verified for compliance of material to the relevant Codes, Standards and/or Specifications. The NPCRT inspector has the right to carry out any test check in order to verify the certified values, in any case of doubt or dispute concerning the results obtained. Should the results not be according to specification, test costs shall be at vendor's charge. 4.3 Visual Inspection Inspection shall be carried out on finished parts. Surfaces shall be free of defects that can be detrimental for use. 4.4 Dimensional Inspection Tolerances in dimensions shall be according to the relevant Codes, Standards and/or Specifications. In particular, the following shall be checked: - thread (using thread gauge) - length and height 4.5 Hardness Check The hardness of bolting shall be verified and found according to the specification.

8 Title: MATERIAL REQUISITION FOR BOLTS AND NUTS Page: 8 of 12 5 INSPECTION AND TESTING 5.1 General Requirements All fittings prepared for NPCRT inspection shall have passed a preliminary inspection made by the Manufacturer's Quality Control. 5.2 Material Inspection All mill test certificates and manufacturer's test certificates, if any, shall be verified. Chemical and mechanical characteristics, recorded diagrams of heat treatment, if any, shall be according to those provided in the relevant Codes, Standards and/or Specifications. NPCRT Inspector has the right to carry out any check test in order to verify the certified values in any case of doubt or dispute concerning the results obtained. Should the results not be according to specification, test costs shall be at vendor's charge. 5.3 Visual Inspection Visual inspection shall be according to the relevant codes, standards and specifications. Furthermore, all surfaces should be sound, clean and free of flaws, corrugated cracks and/or other defects that can be detrimental for the use of the fittings. Finishing and appearance of parts shall conform to ASTM A961,para Dimensional Inspection Tolerances in dimensions shall be according to the relevant Codes, Standards and Specifications. 5.5 Radiographic Examination Unless otherwise stated, the extent of the radiographic examination for welded fittings shall be 100%. The NPCRT inspector may require the film for examination.

9 Title: MATERIAL REQUISITION FOR BOLTS AND NUTS Page: 9 of Hardness test A hardness test for the welds of alloy steel fittings shall be provided. Brinell hardness shall be 225 max. 6 PERMISSIBLE SUBSTITUTIONS 6.1 As a rule alternative materials to those specified in the requisition are not acceptable; if any, vendor shall give evidence by writing of such substitutions in advance to obtain prior NPCRT approval.

10 Title: MATERIAL REQUISITION FOR BOLTS AND NUTS Page: 10 of 12 7 INSPECTION AND TEST PLAN This Inspection and test plan is an engineering document which defines for each type of equipment: The type and extent of Owner/Owner Representative involvement in each phase of fabrication, control and testing requiring an inspection The resulting Suppliers contractual obligations, in accordance with applicable Project General Purchase Conditions Note: The inspection and test plan of may under no circumstances be used as a substitute for the Suppliers Quality Control Plan 7.1 DEFINITION OF CONTRACTOR INVOLVEMENT The nature of involvement is indicated against each activity of fabrication and testing by means of the letters, H, W and R the meaning of which is the following: H: (Hold) Point The Supplier cannot carry out the specified controls and tests without Inspector attendance. Consequently, the attendance to witnessing is mandatory. The Supplier must notify OWNER by fax of the dedicated inspection activity at least fifteen (15) days in advance. W: (Witness) The Supplier must notify to OWNER of the dedicated inspection activity at least fifteen (15) days in advance. OWNER representative witnessing is not mandatory, but optional. When a percentage value is indicated (i.e. W 10%) the inspection activities will be witnessed on spot basis as per percentage indicated. If OWNER representative do not elect to be present, the Supplier may proceed with his own inspection, provided controls and tests records are made available to Inspector for review. R: (Review) - Review of Documents

11 Title: MATERIAL REQUISITION FOR BOLTS AND NUTS Page: 11 of 12 The Supplier has either to submit to Inspector for comments the documents required prior to the performance of the dedicated activity or to transmit or make available for the review of Inspector the results of the controls and tests conducted, as the case may be. 7.2 SUPPLIER S FABRICATION AND QUALITY CONTROL PLAN The Supplier must issue a Fabrication and Quality Control Plan for each equipment. The Supplier s Fabrication and Quality Control Plan is a document which defines in a chronological manner the list of the operations of fabrication, controls and tests in accordance with his own know-how and with the requirements specified in Material Requisition. Following information shall be clearly specified against each operation: - Reference documents (drawings, procedures, etc.) - Acceptance criteria (code, etc.) - Recording documents for controls and tests - Involvement of the Quality Control department of the Supplier and/or his subsupplier This Supplier s Fabrication and Quality Control Plan will have to include all inspection activities defined in and Test Plan as well as all inspection activities scheduled by the Independent Inspection Authority and/or the Client For equipment of inspection levels 1, 2 and 3, the Supplier s Fabrication and Quality Control Plan will have to be submitted compulsory to OWNER for comments before the pre-inspection meeting is held. 7.3 INSPECTION RELEASE CERTIFICATE This document issued by OWNER inspector, permits the Vendor to proceed with the packing and to notify the shipment

12 Title: MATERIAL REQUISITION FOR BOLTS AND NUTS Page: 12 of 12 INSPECTION LEVEL STAGE ACTIVITES DESCRIPTION NPCRT REQ. OF CERTIF. APPLICABLE DOCUMENTS AND REMARKS Material test certificates R YES Type EN B BEFOR FABRICATION Impact test R YES If any FINAL TEST DURING FABRICATION Visual Check Dimensional check W (2%) W (2%) Positive Material Identification (P.M.I) R YES If applicable Exposed machined surface protection check Marking check W W Final inspection book H DOC.