IR 05000491/1979014
| ML19250C144 | |
| Person / Time | |
|---|---|
| Site: | Cherokee  |
| Issue date: | 09/07/1979 |
| From: | Conlon T, Lenahan J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML19250C129 | List: |
| References | |
| 50-491-79-14, 50-492-79-14, 50-493-79-14, NUDOCS 7911080299 | |
| Download: ML19250C144 (4) | |
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UNITED STATES
NUCLEAR REGULATORY COMMISSION o
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REGION 11 o
101 MARIETTA ST N.W SulTE 3100 b
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ATLANTA. GEORGIA 303o3
Report Nos. $0-491/79-14, 50-492/79-14, and 50-493/79-14 Licensee: Duke Power Company 422 South Church Street Charlotte, North Carolina 28242 Facility Name: Cherokee Docket Nos. 50-491, 50-492, and 50-493 License Nos. CPPR-167, CPPR-168, and CPPR-169 Inspection at Cherokee Site near affney, South Carolina M
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J. J. Lenahan
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Date Signed Approved by: ~. [M t.)
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T. E. Conlon, Section Chief, RCES Branch Date Signed SUMMARY
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Inspection on August 23-24, 1979 Areas Inspected This routine, unannounced inspection involved 10 inspector-hours onsite in the areas of NSW dam construction, quality records, soils and concrete laboratory, and licensee action on previous inspection findings.
Results Of the three areas inspected, no items of noncompliance or deviations were identified in two areas; one item of noneompliance was found in one area (Deficiency - Improper curing of concrete cylinders in concrete laboratory-paragraph 5).
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Persons Contacted Licensee Employees C. B. Aycock, P oject Engineer, Construction J. W. Willis, Senior QA Engineer B. R. Justice, QA Engineer W. H. Linsey, Project Geotechnical Engineer A. R. Hollins, Senior QC Engineer 2.
Exit Interview The inspection scope and findi-- were summarized by Region II inspector J.
Rausch on August 24, 1979.
Tle_.icensee acknowledged the noncompliance discussed in paragraph 5.
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1.icensee Action on Previous Inspection Findings (0 pen) Noncompliance 491/79-10-01, 492/79-10-01, and 493/79-10-01:
Place-ment of NSW dam filter materials at densities less than specified. The licensee divided the drain ar.d filter zone which had been compacted to less than 80 percent relative density into three general areas with the follow-ing actio.n in each area:
Area 1 (chimney drain) - The filer materials have been removed from a.
the chimney drain between stations 13 and 50 and 17 and 00. The inspect-or observed replacement and compaction of the transition filter material in the vicinity of station 15 and 50.
b.
Area 2 (covered blanket drain) - Additional density testing has been performed in this area. The licensee is evaluating the test results.
No new work is to be done in this area until the testing and evalua-tion is reviewed by RII:IE.
Area 3 (exposed blanket drain) - Additional compaction has been done c.
in this area. Density test results performed after the additional compaction was completed indicate that the material meets design requirements, i.e. a minimum of 80 percent relative density.
This item remains open pending completion of the licensee's evaluation of materials in area 2 and implementation of corrective action in this area.
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Unresolved Items Unresolved items were not identified during this inspection.
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Independent InspectioT Effort The inspector examinec the following areas:
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Constructica status b.
Storage of containment vessel steel plate c.
Soils and concrete laboratory d.
Concrete batch plant Examination of the curing of concrete cylinder in the soils and concrete laboratory disclosed the following noncompliance:
Chart M-2B-CK of QC Procedure M-2 requires that concrete test cylinder be cured in accordance with ASTM C511. ASTM C511 requires that moirture in curing room atmosphere be saturated to the degree needed to ensure that the exposed surfaces of all cylinder specimens in storage will both look moist and feel moist at all times. On August 23, 1979, the inspector observed that the surfaces of cylinder frem pour number 691 through 696 both looked and felt dry. This was identified to the licensee as Deficiency item 491/79-14-01, " Improper curing of concrete cylinder in the concrete labora-tory".
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No deviations were identified.
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Lakes, Dams and Crnals - Review of Quality Records, Units 1, 2 and 3 The inspector examined quality records for fill placement in the NSW dam.
Records examined included:
a.
Foundatior. verification reports b.
Certification records of 7 QC inspectors Acceptance criteria examined by the inspector appear in PSAR Section 2.5.5 and 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, M-26, and CKB-21.
No deviations or items of noncompliance were identified.
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Previously Identified Inspector Followup Items (Closed) Inspector Followup Item 491/79-09-01,494/79-09-01,and 493/79-09-01: Failure of rebar to meet strength requirements of ASTM A 615. The inspector reviewed the licensee's resolution of a nonconforming item report which was written concerning failure of rebar slightly below the minimum tensile strength specified in ASTM A 615. The low rebar test results occurred during testing of cadweld spices. The licensee. concluded 1274 224
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that cadweld test splice testing is not a valid test method to determine if rebar meets requirements of ASTM A615.
In addition, the licensee and the rebar manufacturer performed some additional testing to verify that the results reported on the manufacturer's Certified Material Test report are accurate. The inspector has no further questions on this item at this time. This item is closed.
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