ML20236L919
| ML20236L919 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 11/05/1987 |
| From: | Warnick R NRC OFFICE OF SPECIAL PROJECTS |
| To: | |
| Shared Package | |
| ML20236L871 | List: |
| References | |
| 50-445-87-18, 50-446-87-14, NUDOCS 8711110119 | |
| Download: ML20236L919 (2) | |
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. APPENDIX"B o
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' NOTICE'OF DEVIATION':
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TUJElectric:
3 Dockets:
150-445/87-18 l
50-446/87-14, b
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-ComancheiPeak SteamVElectric Station, Permits: mCPPR l26; p
Jx i' Units?1 and:2,_JGlen' Rose,LTexas CPPR-127
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_The following7 deviation.was~ identified during inspections 3 conducted p%;
'on? September:3'through October.6,g1987.
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1 mm
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~Section 4;1, "Walkdown' Guidelines,"~cf' Revision 11to Impell). Project 1 y -Instruction 4(PI)10210-052-004," states,.'in part, "The walkdown:
<linfermation willibe documented using the checklists'provided;in
- attachment B.....:. Table.1 provides"the acceptable. tolerances to" l
L
- benused'in--the walkdown process..
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. " Guidelines-for performing'the c'onduit support and conduit routing' Nwalkdowns are provided below.
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" Item:s5'.
Support Configuration Drawian as-built; sketch Identifyiall structural /Ur.istrut member sizes, i
lengths.,.
1
" Item 6..
Support Deficiencies Identify.any gross deficiencies in the support
'? Item 7. - Hilti Kwik Anchorbolt Information
.i
~ Identify-letter stamp and Projection Length of all 1
anchor-bolts on supports.
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~.The-following examples, identified.by the NRC during inspection ~and l review of the post construction hardware' validation program (PCHVP)
' module, Train C-Conduit Less Than Or Equal to 2",
are in' deviation from the above criteria:
i
.(1)'. For analysis tag A-03173 in Room 206, Impell incorrectly recorded the length designator on the end of a 1/4" diameter Hilti Kwik. bolt as being an "E" stamp (3 1/2" long).
The NRC inspector-observed the length designator to be a "D" stamp i
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,(3".long>..
t 8711110119 971105 PDR ADOCM 05000445 4
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1 1
2 l
1 1
1 1
(2)
For analysis tag A-03173 in Room'306, it was determined _during
)
the NRC inspector's, inspection that an 1/8" gap exists between the 3/4" diameter conduit and the conduit-support shim plate, thus invalidating its three-way restraint design function.
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This invalidates all1 portions of the Impel 1~ analysis where j
this three-way support was considered.
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(3)
For analysis tag A-03177 in Room 206, Impell had recorded that the projected length of the 1/4". diameter Hilti Kwik bolt was 3/4".
The subsequent NRC inspection determined this length to q
be 1 1/8".
The specified allowable tolerance _was 1/4".
1 (4)
For Calculation No. A-03451 in I cm 54,-Impell had recorded on RFI No. RFI-ES-1-1043, that Hilti Kwik bolt No. 1 was located 4 1/2" from the top edge of the Unistrut channel.
The NRC inspector, however, determined the bolt to be located 3" from the edge.
The specified allowable tolerance was 1/4".
(5)
For Calculation No. A-03138 in Room 54, Impell had recorded that the projected length of the 1/2" diameter Hilti Kwik bolt
-for support A-03145/NQ-08290 was 1".
The subsequent NRC inspection determined this length to be 1 1/2".
The specified allowable tolerance was 1/4" (445/8718-D-10).
Please provide to the U.
S. Nuclear Regulatory Commission, ATTN:
Document Control Desk, Washington, DC 20555, with a copy to the Assistant Director for Inspection Programs, Comanche Peak Project Division, Office of Special Projects, in writing within 30 days of the date of this Notice, the reason for the deviation, the corrective steps which have been taken and the results achieved, the corrective steps which will be taken to avoid further deviations, and the date when your corrective action will be completed.
Where good cause is shown, consideration will be given to extending your response time.
FOR THE NUCLEAR REGULATORY COMMISSION R F /> & &
Dated this 5th day of November 1987 at Comanche Peak Site i