ML19338D929
| ML19338D929 | |
| Person / Time | |
|---|---|
| Site: | McGuire  |
| Issue date: | 06/05/1980 |
| From: | Parker W DUKE POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML19338D920 | List: |
| References | |
| NUDOCS 8009240220 | |
| Download: ML19338D929 (3) | |
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DUKE POWER ' COMPANY s
Powsm Butt.ntxo 422 Sourn Cnuncu Srazzi, CnAntorTz, N. C. 28242 wituAme o. **anca..sn.
June 5,19'8tj JUij S P3 5?
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TcLap o=c:Anca704 Straw Paoouction 373 4083 Mr. James P. O'Reilly, Director U. S. Nuclear Regulatory Commission Region II
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101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 Subj ect: McGuire Nuclear Station Docket No. 50-369
Reference:
RII:WPA 50-369/80-04 i
Dear Mr. O'Reilly:
As requested by your letter of May 12, 1980 please find attached a response to the item of noncompliance' identified in the subject inspection report.
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Duke Power Company does not consider any information contained in IE Inspec-tion Report No. 50-369/80-04 to be proprietary, ry truly your,
.an..-U.
William O. Parker, r.
1.JB:ses Attachment l
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L MCGUIRE NUCLEAR STATION ~
Response to IE' Inspection Report No. 50-369/80-04 I
-As required by 10 CFR 50,LAppendix B, Criteri'n-V and as implemented by o
Duke Power Company Topical-Report 1A, Activities affecting quality shall be
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prescribed by documented instructions, procedures, or drawings.
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.. and shall be accomplished.in accordance.with-these instructions, procedures or l
drawings.
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i a.
Construction Procedure 308 Table on Steve Anchors requires 5/8 inch I
diameter self drill expansion anchors to be installed with a torque valve of 40 to 45 ft-lbs.
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l b.
Math model drawing MCA.1414-03.20-05 requires reactor coolant system supports;1NC-711 and 1-NC-712 to be 28 inches apart.
Drawing.1-MCA-HD-H76 requires the Residual Heat Removal (RHR) system c.
hanger ND H76 to have a 1/8-inch maximum gap with the pipe.
d.
Drawing MC-1678-4 requires the RHR penetration M 381 to have a minimum sleeve to'pipeLclearance of 1/8 inch.
Contrary.to the above:
i a.' On April 17, 1980, 5/8 inch self drill expansion anchors for RHR support I
l-ND-H76 were found to be torqued less than 40-45 ft-lbs.
b.
On April 17, 1980, spacing between supports 1-NC-711 and INC-712 was measured to be'20 inches.
On Aprii 17, 1980, RHR support ND-H76 had a gap of 1/4 inch.
c.
d.
RHR penetration M 381 had no gap at the bottom of the pipe.
RESPONSE' V
In regard to Items a and c, a nonconforming item report has been issued to document these discrepancies. -An; evaluation will be performed to' determine L
.the appropriate actions to be taken to resolve these problems. Required action will.be~ completed by_ June 30, 1980.
t In regard.to Item.b, when a support restraint is located on the analyzed side
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of a component:and does not exceed the axial restraint criteria, the location
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tolerance. acceptance criteria is + - 1 foot.
Supports 1-NC-711 and 1-NC-712 are springs (not axial restraintsf and are on the analyzed side of the nearest' component. 'The difference between the analyzed and erected locations is 8 1/16 inches which'is acceptable. Therefore,' Duke Power Company does not consider this item to.be.an item of' noncompliance.
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s a s 6 In regard to Item d, drawing MC-1678-4 will be revised to clarify that the gap requirement for penetration M381 is nominal and is only required to assure free movement.
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