ML20138P153

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Rev 2 to Procedure CP-QP-11.11, Reinsp of Comanche Peak Diesel Generator Auxiliary Skid & Support Brackets
ML20138P153
Person / Time
Site: Comanche Peak, 05000000
Issue date: 07/28/1981
From:
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML20138M609 List: ... further results
References
FOIA-85-59 CP-QP-11.11, NUDOCS 8511060448
Download: ML20138P153 (5)
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Text

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k I NUMBER AEVISICN  ; ##O l' TEXASCPSES UTILITIES GENERATING CO l PROCEDURE i

j t gp qp.11,11 2 1 of 5 e UL28 h.l  !,

PREPARED BY: -

i ff Y 0 Arc REINSPECTION OF COMANCHE -

PEAK DIESEL GENERATOR -

AUXILIARY SKID AND SUPPORT BRACKETS 8 APPROVED BY: b v

z% 7/2M8 CATE

1.0 REFERENCES

1-A AISC MANUAL OF STEEL CONSTRUCTION, Seventh Edition l

1-B AWS D1.1-1975 1-C CP-QP-16.0, "Nonconformancies and Deficiencies" 2.0 GENERAL -

2.1 PURPOSE AND SCOPE -^  ; -- S. -

This procedure delineates the procedure for reinspection of the auxiliary skid and support brackets for the CPSES Diesel Generators as provided in P.O. CP-034 by Delaval.

2.2 RESPONSIBILITY I

The TUGC0 Vendor Conpliance Lead Engineer shall have overall i

responsibility for the inspections required by this t procedurt.

3.0 PROCEDURE l

3.1 FA8RICATION DRAWING Site Mechanical Engineering will make a conposite sketch of the vendor drawing (s). This drawing shall be approved by the Project Mechanical Engineer and issued to the TUGC0 Vendor Conp11ance Lead Engineer. All welds not specified on the drawing shall be a full strength fillet (both sides),

and shall meet the following minimum size requirements, except that the weld size need not exceed the thickness of the thinner member.

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%g, TUGCO CA B511060448 851016 FOIA PDR GARDE 85-59 PDR L.

PROCE URE U Ep REVISION PAGE TEXAS UTILITIES GENERATING CO.

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!CP-QP-11.11 2 JUL 2 8 1981 2 of 5 l

Base Metal Thickness Minimum Size of Thicke r Membe r Fillet To 1/4" inclusive 1/8" Over 1/4" to 1/2" inclusive 3/16" Over 1/2" to 3/4" inclusive 1/4" Over 3/4" to 1 1/2" inclusive 5/16" Welds other than full strength fillets shall be so annotated on an as-built drawing by the inspector and shall be submitted to the Project Mechanical Engineer for review and approval.

3.2 MATERIAL VERIFICATION Material verification will not be perfonned by the inspector. Material certification will be provided by the vendor.

3.3 WELDER QUALIFICATION VERIFICATION Evidence of welder qualification (Certificates of Canpliance) have been provided by Delaval and Kaiser Steel. Consequently, field verification of welder qualification is not required.

3.4 BOLTED CONNECTIONS The QC Inspector shall verify for all bolted connections:

a. Minima thread engagement is obtained. Minimtsn thread engagement shall be defined as the end of the bolt at least flush with the nut.
b. Bolting material is of the proper size and type.
c. Washers are installed as required.
d. If bolts are replaced, torque shal1 be verified by QC for at least 2 bolts in each connection.

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PROCEDURE N '" PAGE TEXAS UTILITIES GENERATING CO.

CPSES CP-QP-11.11 2 JUL 2 8 1981 3 of 5 3.5 VISUAL INSPECTION OF WELOS The QC Inspector shall perfonn a final visual inspection of all accessible welds. Welds which are inaccessible shall be so noted on the IR. For purposes of this procedure, in-accessible shall be defined as those welds which cannot have the paint removed to facilitate visual inspection.

Questions to accessibility shall be resolved by the Lead Vendor Conpliance Engineer or his designee. The visual inspection shall verify that:

a. All welds are per drawing and Paragraph 3.1. All deviations are marked up on as-built drawing.
b. The weld is free of slag, scale, and paint.
c. The welds and surrounding base metal shall be free of

. a n: strikes ,

d. Weld profiles are either slightly concave or convex, with the degree o' concavity or convexity nct to exceed 0.1 times actual. leg length,
a. Undercut does rot exceed 1/32".
f. Reinfort:ement of butt joints is not greater than 1/8".
g. Welds are free fran overlap.
h. Welds art free fran lack of fusion and cracks.
i. Full penetration butt welds have canplete penetration.

If inaccessible, the IR shall be so notea and these cases evaluated on a case by case basis.

J. Welds are of minimum size as specified on the drawing and Paragraph 3.1. Welds art pennitted to be 1/16" undenize provided that the length of the undenize weld does not exceed 10% of the total weld length.

Welds may be oversized without/lfmit except.as noted below:

A.

Anount of ovenize does not cause excessive distortion.

B. For edge welds, the maximisn size requirements of pa ragraph 2.7.1.2 of Reference 1-B are met.

som ces 3 TUGCC OA

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I PROCEDURE i ISSUE NUMBER OATE PAGE TEXAS UTILITIES GENERATING CO. l REVISION CPSES CP-QP-11.11 2 JUL 2 3 1S81 4 f6

k. All craters are filled to the full cross section.
1. The : tan of the diameters of piping porosity does not exceed 3/8 inch in any linear inch of weld and does not exceed 3/4 inch in any 12 inch length of weld.

3.6 DOCUMENTATION These inspections shall be documented on an inspection report, Attachraent 1. Unsatisfactory items shall be so noted on the IR and returned to Construction for resolution.

Welds which have been noted as inaccessible shall be evaluated by the Project Mechanical Engineer. Canpleted inspection reports shall be forwa rded to the Pemanent Plant Recortis Vault for retention.

3.7 WELD REPAIR Weld repairs shall be perfonned in accortlance with existing Site procedures. Reinspection shall be perfomed on the repairs as described in 3.5.

3.8 NONCONFORMANCES Nonconfonning conditions (other than welding size and location dicrepancies described in Paragraph 3.1) will be reported in accordance with Reference 1-C.

9 3 TUGCO CA -

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PROCEDURE ISSUE NUMBER REVISION PAGE DATE j TEXAS UTILITIES GENERATING CO. i CPSES '

CP-QP-ll.ll 2 JUL 2 S 1981 5 of 5 ATTACHMENT 1 1

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CCMANCNE PEAM STEAM El.ECTRIC STATION ,,

INSPECTION REPORT [* ,

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INSPECTION ATTM19UTES ""

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1. j 'seld Free of Paint and Rust i i i I i l i 1 2. 6 Weld size per Drawing l l i l i I Il l
3. I Final Visual Inspection per Paragrapn 3.5 II l t I i 4 8 Bolted Cennectices eer Paragraph 3.4 i l i i l i i ii i i l lI I I I I I l 8 I i i 1 l I i i i i l I i l I i i I i l i ' i i i i l i i l i l l l I I i l l I I i i l i I l I i ii 1 . .

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  • * ' ' " ' " * "M isionames l 1. A. C' JSED C 8 ' QC SSPECTOR g r5 Form No. 3 TUGCO Ca l

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