ML20203E819

Rev 0 to GR1N, General Repair Procedure Bottom Liner Plates

ML20203E819
Person / Time
Site:	LaSalle
Issue date:	05/25/1979
From:	CBI NUCLEAR CO.
To:
Shared Package
ML20203E435	List: ML20203E430 ML20203E457 ML20203E492 ML20203E501 ML20203E509 ML20203E520 ML20203E526 ML20203E536 ML20203E552 ML20203E565 ML20203E571 ML20203E580 ML20203E587 ML20203E614 ML20203E620 ML20203E622 ML20203E639 ML20203E651 ML20203E696 ML20203E782 ML20203E819 ML20203E834 ML20203E863 ML20203E902
References
GR1N, NUDOCS 9802270136
Download: ML20203E819 (3)

Text

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k, IDE NTIMC ATION GRIN CONTRACT 83671/2 viitt GENERAL REPAIR PROCEDURE BOTTOM LINER PIhTES ,,o c no. 1 oy 3 PROOuCT NUCLEAR CONTAINMENT LINER BY DATE CORO insp nEo rec

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[ REFLRENCE ~~~~

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:

1977and NE, ASME Boiler Section IX,and S 77Pressure Addenda.Vessel Code,Section III, Subsection 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 with and non-destructive customer apprceed procedures:examination is to be done in accardance WPS-800 (GWPS-SMA)*, WPS-E309-P8/

83670*, WPS-E308/83670*, PT10*, LCSX*, VB3X*.

QUtilize latest revision approved for the contract.

0Nd f AS Lcs ata M 'I - ' -" CBI J CONTRACT [8/7/!#

DATE - S"l1*?Y

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- RELEASED BY CNQA SERVICES 9802270136 980220 PDR ADOCK 05000373 og , ,, ,, y ,,g y q%' P PDR

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lOENTIF. CATION GRIN

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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

I d i i 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.

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8.2 The plug weld location is to be shown on the record drawings 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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