ML20042A657

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Repair Procedure - Nuclear Containment Vessel.
ML20042A657
Person / Time
Site: Waterford Entergy icon.png
Issue date: 05/16/1980
From:
CBI SERVICES, INC. (FORMERLY CHICAGO BRIDGE & IRON
To:
Shared Package
ML20042A646 List:
References
RP, NUDOCS 8203230657
Download: ML20042A657 (3)


Text

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1.0 INTRODUCTION

This procedure outlines specific requirements of the Customer and governing Code, as contractually established for additional work on a previously tested and code stamped Class MC Containment Vessel.

2.0 REFERENCES

2.1 Nuclear Quality Assurance Manual for Repairs and Alternations to ASME Code Stamped Components, Issue No. 4.

2.2 Nuclear Quality Assurance Manual (QAM) for ASME Section III Products, Issue No. 6.

2.3 1971 ASME Code,Section III, Division 1, Subsections NA & NE, with Su=mer 1971 Addenda. ,

2.4 ESASCO Design Specification No. LOU 1564.717.

2.5 71-2426 0.A. Handbook 2.6 National Board Rules l

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REPAIR PROCEDURE .Aac ~o. 2 or 3

'"0 DUCT NUCLEAR CONTAINMENT VESSEL

3.0 SCOPE

All work to be accomplished in accordance with the reference documents given in Para. 2.0.

3.1 Install 6'E roof cutout and Equipment Hatch Cover. ,

3.2 Remove miscellaneous temporary clips, bracket straps and lugs. ,

3.3 Provide permanent pads and clips as requ' ired by customer. .

4.0 PROCEDURE

4.1 Installation of 6'E roof cutouts (See Detailed Field Procedure for Detail C on Contract Dwg. 12).

, 4.1.1 Clean edges of cutout and opening by brushing or grinding.

4.1.2 Fit cutout in opening, gouge and weld in accordance with WPS-E7018/71-2426 and Special Procedure Instructions on approved contract Drawing .1.2.

(See GWPS-SMA for correction of wide gaps.)

4.1.3 100% radiograph the weld in accordance with RTP-71-2426-9B and approved contract drawings.

4.2 Installation of Equipment Hatch Cover. (See Detailed Field Procedure for Joint G on Contract Dwg. 26.)

4.2.1 Clean edges of Cover and Barrel by brushing or grinding.

4.2.2 Fit Cover to Barrel, gouge and weld in accordance with WPS-E7018/71-2'26 and Field Procedure Instruc-tions on approved contract drawing 26. .-

4.2.3 100% radiograph the weld in accordance with RTP-71-2426-9B and approved contract drawings.

4.3 Removal of miscellaneous clips, bracket straps, and lugs.

4.3.1 Gouge and remove.

-- 4.3.2 Grind remaining weld relatively smooth.

  • Co l63 A REV J AN 77

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,,,,,,,,3 ,, 3 NUCLEAR CONTAINMENT VESSEL 4.3 Removal of Miscellaneous clips, bracket straps, and lugs (cont.)

4.3.3 Visually inspect per VIP-13.

4.3.4 If questionable indications are found by visual ex="ination, MT indications in accordance with MTP-(71-2426)-13B. #

4.3.5 Unacceptable indications may be' repaired by grinding (not to exceed .01 inches below thickness shown on contract drawings) or by welding.

  • 4.3.6 After repairing by grinding or welding, MT ,

examine the completed repair in accordance with MTP-(71-2426)-13B 4.4 Provide permanent pads and clips as required by customer.

[> 4.4.1 Fabricate and install the pads and clips in accordance with approved contract drawings, the appropriate cus-tomer approved welding procedure (WPS-E7018/71-2426, WPS-E308L/71-2426 and/or WPS-E309A/71-2426), and the QA Manual.

)> 4.4.2 MT or PT all welds in accordance with MTP-(71-2426)-13B ,

or PTP-12B as specified on contract drawings.

5.O CLARIFICATION OF QAM REQUIREMENTS:

Authorized Inspection for the shop and field shall be provided by CBI. (Refer to Paragraph i.1 of the Repair and Alteration O. A. Manual) ,

6.0 DOCUMENTATION

6.1 Document the work in accordance with the OAM for the contract.

6.2 The " Manufacturer's Report of Welded Repairs" (Page 4 l of Repairs and Alterations Q.A. Manual) shall be provided in lieu of any ASME Data Reports described in QAM.'

6.3 A " Manufacturer's Report of Welded Repairs" may be provided to cover all repair work or several

" Manufacturer's Report's of Welded Repairs" may be provided to document individual or groups of repair work covered by this procedure.

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