IR 05000491/1979017
| ML19260A308 | |
| Person / Time | |
|---|---|
| Site: | Cherokee  |
| Issue date: | 10/18/1979 |
| From: | Conlon T, Lenahan J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML19260A305 | List: |
| References | |
| 50-491-79-17, 50-492-79-17, 50-493-79-17, NUDOCS 7911090299 | |
| Download: ML19260A308 (4) | |
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UNITED STATES NUCLEAR REGULATORY COMMISSION o
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%*****o ATLANTA, GEORGIA 303o3 007 1 91979 Report Nos. 50-491/79-17, 50-492/79-17 and 50-493/79-17 Licensee: Duke Power Company 422 South Church Street Charlotte, North Cerolina 28242 Facility Name: Cherokee Nuclear Station Docket Nos. 50-491, 50-492 and 50-493 License Nos. CPPR-167, CPPR-168 and CPPR-169 Inspection at Cherokee site near Gaffney, South Carolina Inspector:
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J.J.fefahan Date Signed
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Approved by:d[
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/o -/f-7 9 T. E. Conlon, Section Chief, RC&ES Branch Date Signed SUMMARY Inspection on September 25-29, 1979 Areas Inspected This routine, unannounced inspection involved 23 inspector-hours on site in the areas of NSW dam construction work activities and gaality records, construction status, and licensee action on previous inspection findings.
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t DETAILS 1.
Persons Contacted Licensee Employees
- C. B. Aycock, Fcoject Engineer
- W. H. Linsey, Geotechnical Engineer
Exit Interview The inspection scope and findings were summarized on September 28, 1979, with those persons indicated in Paragraph I above.
3.
Licensee Action on Previous Inspection Findings a.
(0 pen) Noncompliance 491/78-08-02, 492/78-08-02, and 493/78-08-02:
Calibration of sieves. The inspector reviewed a draft of revision 18 to Procedure 0-1,
" Control of Measuring and Test Equipment", which will add sieves to the calibration schedule.
The inspector reviewed the results of the initial calibration of the sieves which was performed in June and July 1979. This item remains open pending final approval and implemeatation of Revision 18 to Procedure 0-1.
b.
(0 pen) Noncompliance 491/79-10-01, 492/79-10-01 and 493/79-10-01:
Placement of NSW dam filter materials at densities less than specified.
The licensee divided the drain and filter zone which had been compacted to less than 80 percent relative density into three general areas with the following action in each area:
(1) Area 1 (chimney drain) - The inspector observed replacement, compaction and QC testing (field density testing) of transition and fine filter materials in the chimney drain in the vicinity of station 15 and 50.
Fill operations were continuously monitored by QC inspectors.
(2) Area 2 (covered blanket drain) - Based on evaluation of results of i., place density tests, the licensee concluded that the filter materials in the blanket drain will require additional compaction.
The group I soils covering the blanket drain will be removed and additional compaction and retesting will be performed on the blanket drain.
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t-2-(3) Area 3 (exposed blanket drain)-Additional compaction and retest-ing has been done in this area. The retests indicated that the density of the material met design requirement after recompaction.
However, prior to covering the blanket drain in this area with Group I soils, check testing will be performed to verify materials have not been disturbed since being recompacted.
If results of check tests indicate material densities do not meet design require-ments, additional compaction of the blanket drain will be done prior to placement of the Group I soils.
This item remains open pending completion of the Licensee's corrective action.
4.
Unresolved Items Unresolved items were not identified during this inspection.
5.
Independent Inspection Effort The inspector examined the following areas:
a.
Construction status b.
Soils and concrete laboratory and currentness of calibration of labora-tory equipment.
Compressive strength testing of concrete cylinders c.
d.
Concrete batch plant Welding of Nelson studs on steel embedment plates e.
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Results on physical and chemical tests (certified material test reports)
performed on 5/8 inch by 6 and 9/16 inch Nelson studs, heat numbers 658C 385 and 654E 033.
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Partial placement of pour number CK806, an interior wall in the Unit 1 auxiliary building, and pour number CK808, a wall in the Unit I reactor building.
No deviations or items of noncompliance were identified.
6.
Lakes, Dams and Canals - Review of Quality Records, Units 1, 2 and 3 The inspector e::amined quality records for fill placement in the NSW dam.
Records examined included:
a.
Results of field density tests (drive cylinder method) performed on impervious core and Group I fill materials which have been placed to date in the NSW dam.
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Results of laboratory tests for Atterberg limits, specific gravity, and grain size analysis performed on impervious core materials.
Results of standard proctor tests (ASTM D698) performed on impervious c.
core materials placed to date in the NSW dam.
d.
Certification and training records of 8 QC inspectors.
Acceptance criteria examined by the inspector appears in PSAR Section 2.5.5 acd Appendix 2A, SER section 2.5.5, SER Supplement No. 1 Section 2.5.3, Specification CKS 1114.00-00-001, and procedures M-1 and M-26.
No deviations or items of noncompliance were identified.
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