IR 05000518/1979005
| ML19270G061 | |
| Person / Time | |
|---|---|
| Site: | Hartsville  |
| Issue date: | 04/02/1979 |
| From: | Swan W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML19270G059 | List: |
| References | |
| 50-518-79-05, 50-518-79-5, 50-519-79-05, 50-519-79-5, 50-520-79-05, 50-520-79-5, 50-521-79-05, 50-521-79-5, NUDOCS 7906010328 | |
| Download: ML19270G061 (6) | |
Text
e UNITED ST ATES g ># Rf 00g NUCLEAR REGULATORY COMMISSION
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Reports Nos. 50-518/79-05, 50-519/79-05, 50-520/79-05 and 50-521/79-05 Licensee: Tennessee Valley Authority 830 Power Building Chattanooga, Tennessee 37401 Facility Name: Hartsville Nuclear Plants A and B Docket Nos. 50-518, 50-519, 50-520 and 50-521 License Nos. CPPR-150, CPPR-151, CPPR-152 and CPPR-153 Inspection at Hartsville Site, Hartsville, Tennessee
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Inspector:
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W. B. Swan Date Signed 7, u,
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dh[79 Approved by:
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J. C. Bryant. Section Chiefj RCES Branch Dat'e Signed SUMMARY Inspection en February 20-23, 1979 Areas Inspected This routine announced ins'pection involved 30 inspector-hours onsite in the areas of review of previous inspection findings; spray ponds; containment concrete and auxiliary building concrete Results Of the four areas inspected, no apparent items of noncompliance or deviations were identified.
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DETAILS 1.
Persons Contacted Licensee Employees
- R. T. Hathcote, Project Manager W. R. Brown, Construction Engineer, Plant A W. T. Quinn, Construction Engineer, Plant B
- L. H. Jackson, Assistant Construction Engineer, Plant A
- H. S. Sheppard, Assistant Construction Engineer, Plant B SR. L. Teasley, General Construction Superintendent, Plant A
- R. E. Young, Assistant Construction Engineer, Plant B
- K. H. Stewart. Assistant Construction Engineer, Plant A
- W. O. Brown Essistant Construction Engineer, Plant A
- E. D. Peoples, Assistant Construction Engineer, Plant B
- J. W. Davenport, Civil / Materials QC Supervisor, Plant A kW. W. Davis, Materials Engineer, Plant A
"W. E. Huffaker, Civil / Materials QC Supervisor, Plant B G. England, DCU Supervisor, Plant 3 K. McLean, Project Geologist A. Sooderberg, Geologist, Knoxville J. Colson, Petrographic Analyst, Knoxville In addition to the above, other licensee inspection and craft personnel were interviewed.
& Attended exit interview.
2.
Exit Interview The inspection scope and findings were summarized on February 23, 1979 with those persons indicated in Paragraph I above.
3.
Licensee Action on Previous Inspection Findings (Closed) Noncompliance Item (518/78-16-01, 519/ 78-16-01, 520/ 78-16-01, a.
521/78-16-01):
Failure to control issue of specification changes.
Discussion with responsible HNP personnel and review of the licensee's response letters dated January 11, 1979 and February 14, 1979 show present compliance with requirements for issuance of specification changes.
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-2-b.
(0 pen) Unresolved Item (518/78-16-02, 519/78-16-02, 520/78-16-02, 521/78-16-02):
No requirements for verifying accuracy of calcula-tions in civil QC tests.
The licensee has completed a review of civil QC procedures to determine which procedures require revisions to add a step requiring checking of mathematical computations and/or data interpretation to verify that accuracy.
Calculation forms will be revised to add a block for recording the checker's name or initials. The forms for QCI 102 Earthwork have been revised to verify review of the calculations questioned in report 76-16.
These are the forms for Earth Compaction - Sand Cone Method and for Earth Fill Compaction - Rubber Balloon Method.
This item remains open pending further evaluation by the licensee and NRC.
c.
(Closed) Noncompliance Item - (Infraction 521/79-01-01):
Failure to follow procedures for curing concrete, specifically to permit
- ections of surface of ponded placement to become dry before curing is complete. Licensee issued QCIR 2827. Disposition by engineering was to require three additional days curing after each dry section required by General Construction Procedure had been rewetted as G-2.
This was accomplished. Licensees response letter of March 9, 1979, coafirms intent to comply with the procedure.
d.
(0 pen) Unresolved Item (518/79-01-03, 519/79-01-03, 520/79-01-03, 521/79-01-03):
Procedures for receiving inspection and storage maintenance inspections.
Previously missing documentation for preventive maintenance inspections for RCIC Turbine and RCIC Gland Containment System, equipment items 8184-A and 40040A, were found in File E SIC 002. Each such inspection is recorded on a computer readout and used to schedule follow on inspections at required periods.
Clarification is needed of the method used to insure mat, prior to receipt of equipment RIS&PM procedures are in conformance with the supplier's requirements for storage conditions and preven-tive maintenance in storage. This item remains open pending further evaluation by the licensee and NRC.
e.
(Open) Unresolved Item (518/79-01-04, 519/79-01-04, 520/79-01-04, 521/79-01-04):
Detaib of procedures for drilling and grouting of spray ponds. The inspector reviewed a memorandum dated February 9, 1979 entitled, "Hartsville Nuclear Plants A&B - Southern ESW Spray Pond Foundation Investigation." The memorandum outlined additional work to be completed prior to evaluation of the grouting program and preparation of a report to NRC of fice of Nuclear Reactor Regula-tion (NRR). The memorandum also discussed procedures to be used to locate drill holes that had been destroyed prior to being grouted.
The memorandum does not clarify criteria to be used to trace out 2237 044-4
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-3-cavities.
The licensee has agreed to meet with NRR to discuss its commitments and outline a program to be followed to complete spray pond grouting. This item remains open.
f.
(Closed) Unresolved Item (518/79-01-05, 519/79-01-01, 520/79-01-05, 521/79-01-05):
Procedures for Curing of Concrete in Cold Weather.
After design engineering review of problems involved in curing vertical and horizontal concrete placements under varying condi-a resolution memorandum was issued to tions during cold weather, the site instructing full compliance with curing requirements of TVA's General Construction Procedure G-2 for Concrete.
4.
Unresolved Items Unresolved items wece not identified during this inspection.
5.
Independent Inspection Effort The inspector examined the following areas:
Inspected completed initial wall placement in A-1 shield building, a.
pour AIR-2A b.
Observed placement A1A-17B, 18B, etc., 250 cubic yards in walls of Unit A-1 auxiliary building on February 21-22, 1979 Made final review of site quality assurance procedures for residual c.
site preparations.
No noncompliance or deviations were identified.
6.
Lakes, Dams and Canals - Observations of Work and Work Activities Spray Ponds A-1, B-1, A-2, B-2 The inspector observed preparations for installing a piping assembly for the pumping station for spray pond A-1 and inspected completed fill concrete placements and preparations for placing Category I concrete on the fill concrete for the pumping station of spray pond B-2.
Excavation for all four ponds is complete except for cleanup. The installation of compacted earth fill between and south of the ponds was at a standstill because of weather and continuing foundation investigation. Discussions were held with a three man geologic team on site for study of the founda-tion of cooling towers.
The team confirmed that spray pond foundation p repa ra tion actions outlined in a memorandum from the design project manager to the site manager, dated February 9,1979, and entitled " Harts-ville Nuclear Plants A and B-Southern ESW Spray Pond Foundations Investigation" are still valid.
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-4-Revision ERN 12 to project construction specification N6C-875 " Earth and Rock Foundations and Fills" was received on site February 21, 1977 during the inspection.
This extensive revision supplements general construction specifications G-9 " Rolled Earthfill for Dams and Power Plants" and G-26 " Pressure Grouting of Rock Foundations with Portland Cement" and procedure SOP-2 " Foundation Evaluation and Treatment" In observation of ongoing and completed work and in review of pertinent sections of the mentioned documents, no noncompliance or deviations were identified.
7.
Containment (Structural Concrete I) - Observation of Work and Work Activities-Basemats for Units A-1, A-2, and B-2 A follow on confirming inspection was made of the completed basemat of Unit A-1.
Preparations for placement A2R-1C, estimated to require 2190 cubic yards of concrete, were observed. These preparations included positioning embedments and setting of additional rebar.
Completed placement B2R-1A and its fo rms and embedded rebar stubs were inspected at Unit B2 basemat. The upper surface had been roughened to join the next pour. No preparations were underway for the next basemat placement for B-2.
Acceptance criteria for concrete work were incorporated in Specification 300-01, " Concrete, TVA STRIDE" Implementation and quality control have been through QCI C-201, " Concrete, Concrete Placement" and its Appendix,and TVA General Construction Specification G-2, " Plain and Reinforced Concrete" In the work observed, completed placement inspected and pertinent records reviewed, no deviation or noncompliance was identified.
8.
Containment (Structural Concrete I) - Review of Quality Records - Basemats of Units A-2 and B-2 A follow on review of quality records for A-2 basemat placements was made.
Quality records are required by quality control instructions C-201, C-202, C-203, C-204, C-205, C-206, C-207, C-208 and C-209. The inspector sampled these records for placement A2R-1B for which 864 cubic yards were placed. The design mix used was 301.75 BFW-P, requiring 3000 psi compressive strength at 90 days.
The records for 28 day cylinder tests were reviewed. Compressive tests of the seven cylinders averaged 2770 psi, which is 92% of the strength required at 90 days.
Curing records were reviewed.
Preplacement records and QC records generated during placement A2R-1B had been reviewed by an NRC inspector during the placement on December 5-6, 1978.
Pour B2R-1A, 1941 cubic yards, was placed on December 21-22, 1978.
Preplacement inspection records and QC records generated during the placement were reviewed by an NRC inspector.
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o-5-On February 22, 1979, this inspector reviewed post placement records for Pour B2R-1A. At 28 days, test cylinders averaged 2,693 psi compressive strength, or 90% of 90 day requirement.
Curing had been acceptably completed.
Internal and lateral temperature monitoring by embedded thermocouples was performed from December 23 to 29, 1978.
Internal temperatures recorded at stations 5 and 6 varied between 78 degrees and 86 degrees, an acceptable range.
The records review indicated that procedural requirements had been met and that required quality records had been generated.
In the records review, no noncompliance was identified.
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