ML20203E819
| ML20203E819 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 05/25/1979 |
| From: | CBI NUCLEAR CO. |
| To: | |
| Shared Package | |
| ML20203E435 | List: |
| References | |
| GR1N, NUDOCS 9802270136 | |
| Download: ML20203E819 (3) | |
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IDE NTIMC ATION GRIN CONTRACT 83671/2 GENERAL REPAIR PROCEDURE BOTTOM LINER viitt PIhTES
,,o c no. 1 oy 3 PROOuCT NUCLEAR CONTAINMENT LINER BY DATE CORO insp nEo rec PREPARED DRV 5/5/79
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REFLRENCE
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ST ANDARD R rv. NO. ~
1.0 ACoPE
This procedure covers:
1.1 Repairs (ts required by the customer) of Category I non-con fo rmi t s 79 (such as burn-throughs) in the containment liner bottom plates.
1.2 Repairs of damaged stiffener channels in the bottom as required by the customer.
2.0
REFERENCES:
1977 ASME Boiler and Pressure Vessel Code,Section III, Subsection NE, and Section IX, S 77 Addenda.
3.0 APPARATUS :
3.1 Welding machines 3.2 Carbon arc-air goLges 3.3 Grinders end brushes 3.4 Fitting bars and wedges 3.5 Miscellaneous equipment as required 4.0 REPAIR WELD AND NDE PROCEDURES:
Welding and non-destructive examination is to be done in accardance with customer apprceed procedures:
WPS-800 (GWPS-SMA)*, WPS-E309-P8/
83670*, WPS-E308/83670*, PT10*, LCSX*, VB3X*.
QUtilize latest revision approved for the contract.
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CBI J
CONTRACT [8/7/!#
DATE - S"l1*?Y
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INITIALS... - _M RELEASED BY CNQA SERVICES 9802270136 980220 PDR ADOCK 05000373 og,,,,, y,,g y PDR q%'
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s lOENTIF. CATION GRIN
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Rev.No. 0 l
contract 83671/2 Ti.e GT;NERAL REPAIR PROCE' DURE BOTTOM LINER l
PLATES P^ot No.
2 or 3
PRODUCT NUCLEAR CONTAINMENT LINER
5.0 MATERIAL
The back-up plate shall be A or SA 240 Typ 304 and meet material I.D.
requirements for I.D.
= C.
6.0 REPAIR SEQUENCE:
6.1 Bottom Plate Repair 6.1.1 Lay out a 1" x 3" cut out over the burn-through with radius corners.
6.1.2 Cut out the area using an air carbon are gouge.
6.1.3 Pry up the opening enough to allow the insertion of a 2" x 4" x 3/16" back-up plate.
See Sketch.
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--..... i 6.1.4 Seal weld the back-up plate to the bottom plate and complete welding using the stringer bead technique per WPS-E308/83670*, and/or WPS-E309 P-8/33670*.
- Utilize latest revision approved for the contract.
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t 00144 A REV J AN 17
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lot'NTIFIC ATION GRIN REv.NO.
O CONTRACT 83671/2 T'TLE GENERAL REPAIR Ph0CED'URE BOTTOM LINER PLATES PAGE NO.
3 OF 3 PRODUCT NUCLEAR CONTAINMENT LINER 6.2 Stiffener Channel 6.2.1 Grind all damaged areas for liquid penetrant examination.
6.2.2 Lia.iid Penetrant examine using PT10*.
- 6. 2. 3, Using left-over stiffener chanrel cut needed material to put patch over damaged area.
6.2.4 Fit and weld patch over damaged area (3/16" fillet all around) using WPS E308/83670*.
7.0 ADDITIONALS
7.1 Perform NDE in accordance with contract requirements for other bottom plate seams. (See contract drawing #32 Sect. "B-B".)
NDE PT10* and VB3X*.
7.2 Fit and weld leak chase to bottom plates over plug welds using attachment weld details per CBI drawings 34 & 35. Tie into adjacent leak chase zone and conduct test of Jaak chase as required.
8.0 DOCUMENTATION
8.1 Nonconformity to be listed on "Nonconformance Contro) List".
Repair to be controlled by " Repair Check List".
All docu-mentation to be in accordance with Contract Q. A. Manual for Category I repairs.
8.2 The plug weld location is to be shown on the record drawings
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including the designation of the leak chase zone that the repair area is tied into.
8.3 -
Documentation for
- 6. 2 - None required.
- Utilize the latest revision approved for the contract.
GO 8 68 A REV J AN 7 7
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