IR 05000518/1979001
| ML19263D708 | |
| Person / Time | |
|---|---|
| Site: | Hartsville  |
| Issue date: | 02/05/1979 |
| From: | Bryant J, Lenahan J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML19263D697 | List: |
| References | |
| 50-518-79-01, 50-519-79-01, 50-520-79-01, 50-521-79-01, NUDOCS 7904130174 | |
| Download: ML19263D708 (8) | |
Text
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tam ar0 UNITED STATES
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ATLANTA, GEORGIA 30303
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Report Nos.: 50-518/79-1, 50-519/79-1, 50-520/79-1, 50-521/79-1 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, 50-521 License Nos.-
CPPR-150, CPPR-151, CPPR-152, CPPR-153 Inspection at Hartsville Site, Hartsville, Tennessee Inspector:
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J. J.fIhnahan Date Signed Approved by: _ M fgf 49J9 J
. Bryant' Section Chief, RCES Branch Date ligned SUMMARY Inspection on January 2-5, 1979 Areas Inspected This routine unannounced inspection involved 28 inspector-hours onsite in the areas of Class A, B, and D storage; structural concrete work perfor-mance, quality records and QA/QC controls; A-1 ard B-2 spray pond grouting QA/QC controls and quality records; licensee actions on previous inspection findings; and construction status.
Results Of the five areas inspected, no apparent items of noncompliance or deviations were identified in four areas; one apparent item of noncompliance was found in one area (Infraction - failure to cure concrete pour number B2R-1A -
Details, paragraph 9); one apparent deviation was found in one area (failure to sample pumped concrete at end of pump line - Details, paragraph 10).
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DETAILS 1.
Persons Contacted Licensee Employees R. T. Ilathcote, Project Manager
- E. D. Peoples, Assistant Construction Engineer, Plant B
- R. E. Young, Assistant Construction Engineer, Plant B
- H. S. Sheppard, Assistant Construction Engineer, P1n,t B
- G. A. Gonsalves, QA Supervisor
- W.
O. Brown, Assistant Construction Engineer, Plant A
- J. W. Davenport, Civil / Materials QC Supervisor, Plant A
- W.
W. Davis, Materials Engineer, Plant A M. Rodgers, Materials Engineer, Plant B
- A. G. Debbage, QA Audit Supervisor
- W.
T. Quinn, Construction Engineer, Plant B
- W.
R. Brown, Construction Engineer, Plant A
- L.11. Jackson, Assistant Construction Engineer, Plant A
- K. II. Stewart, Supervisor, Engineering Services, Plant A
- E. O. Charlton, QA Engineer
- W. E. Huffaker, Civil / Materials QC Supervisor, Plant B G. England, DCU Supervisor, Plant A
- T.
O. Wilkinson, Supervisor, Materials Services, Plant A P. Jackson, Inspector, Materials Services, Plant A kT. G. Tyler, Licensing Engineer F. Stone, Chief, HNP Foundation Inspection Team (Telephone Conversation)
K. McLean, Project Geologist
- Attended exit interview.
2.
Exit Interview The inspection scope and findings were summarized on January 5, 1979 with those persons indicated in Paragraph I above.
The licensee acknowledged the noncompliance discussed in paragraph 9 and the deviation discussed in paragraph 10.
3.
Licensee Action on Previous Inspection Findings (0 pen) Noncompliance Item (78-16-01):
Failure to control issue of a.
specification changes.
Discussion with responsible HNP personnel and review of specification N6C-875 disclosed the following:
(1) Specification Revision Notice (SRN) 3, SRN 4, SRN 6, and SRN 7 to specification N6C-875 have been placed in the plant A Document Control Unit Master File and have been distributed to Engineering Unit Supervisor.
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-2-(2) HNP Plant A personnel have reviewed work covered by Specifica-tion N6C-875 which has been completed since Revision 5 to the Specification was issued. They found no work was done which would have been affected by the specification changes noted in SRN 3, SRN 4, SRN 6, and SRN 7.
(3) The procedure outlined in CEP 6.03, " Distribution of Design Information," will be followed in the future to insure Document Control Units (DCUs) in Plants A and B receive all design information including changes.
Previously, some design information was transmitted f rom Engineering Design to the Project Manager for his review.
The Project Manager's office than distributed this design information to the DCUs.
(4) Revision 6 to Specification N6C-875 has been issued.
Revision 6 incorporates SRN 3, SRN 4, SRN 5, and SRN 6.
Revision 7, which will incorporate SRN 7, SRN 8 and SRN, will be issued in the near future.
This items remains open pending NRC review of the licensee's final rrr-et b.
(0 pen) Unresolved Item (78-16-02):
No requirements for verifying accuracy of calculations in civil QC tests.
The licensee has com-pleted 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 their accuracy.
Calculation forms will be revised to add a block for recording the checker's name or initials.
This item remains open pending further evaluation by the licensee and NRC.
4.
Unresolved Items Unresolved items are matters about which more information is required to determine whether they are acceptable or may involve noncompliance or deviations.
Unresolved items identified during this inspection are discussed in Paragraphs 5, 6, and 8.
5.
Independent Inspection Effort The inspector examined the following areas:
a.
Overe!! construction status b.
Currency of calibration of labcratory equipment in the concrete and soils laboratories, Plants A and B.
c.
Plant A Class A, B, and D storage areas
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-3-d.
Curing of pour numbers AW-9, AW-11 and AW-13 in the Rad Waste Building and of pour number KRW-4 in the Intake Structure.
e.
Partial placement of pour number A2A-4A for Unit A-2 Auxiliary Building base mat.
Examination of this pour included preplacement inspection, inspection of the batch plant and testing of fresh concrete, and inspection of concrete placement and consolidation.
The licensee had taken steps to cortect the deviation discussed in paragraph 10 by taking some pumped concrete samples f rom the end of the pump line.
Controls were in effect for batching and place-ment of concrete during cold weather.
f.
Storage and the preventative maintenance program for RCIC Turbine And RCIC Gland Containment System.
Examination of procedures and of the storage and preventative maintenance program for the RCIC Turbine and RCIC Gland Containment System disclosed the following untesolved item.
The procedure (RIS&PM M-540) specifying receiving, inspection, storage ar' preventative maintenance requirements in effect when the equipment was received on site specified Class C storage and required no preventative maintenance.
The vendor's technical data was shipped with the equipment.
After review of the technical data, the procedure was revised to specify Class B storage and monthly preventative maintenance.
The equipment was moved from Class C to a nigher level of storage after the revised procedure wa received at the site.
The inspector questioned the practice of preparing RIS&PM procedures prior to receipt and review of the vendor's technical data and storage of equipment onsite using potentially incorrect procedures.
In addition, there was no documentation in the DCU of any preventative maintenance being performed on the RCIC Turbine prior to December, 1977, and on the Gland Set prior to September, 1978.
Also there was no documentation of a detailed inspection being performed on the equipment after it was moved to a higher level storage or of the date when it was moved.
Discussions with responsible engineers indicated the preventative maintenance and inspections had been performed and that documentation had been misplaced due to a change over in the preventative maintenance record keeping system.
The missing documentation and revised procedures will be reviewed by NRC in a subsequent inspection.
This was identified to the licensee as Unresolved Item 518/79-01-03, 519/79-01-03, 520/79-01-03, and 521/79-01-03.
No deviations or items of noncompliance were identifie,
t-4-6.
Lakes, Dams and Canals - Review of Quality Assurance Implementing Procedures, Units A-1 and B-2 The inspector performed a follow-up inspection of QA-QC control for lakes, dams and canals. The following procedures were examined to determine if work activities and quality control and quality assurance functions were provided for as stipulated in NRC requirements, PSAR Section 2.5.4, SER Sections 2.5.3.4 and 2.5.3.5, and SER Supplem'it No. 1 Sections 2.5.3.4 and 2.5.3.5.
a.
QCl C-109, " Drilling and Grouting Inspection" b.
TVA Specification G-9, " Rolled Earthfill for Dams and Power Plants" c.
TVA Specification G-26, " Pressure Grouting of Rock Foundations with Portland Cement" d.
TVA Specification N6C-875, Revision 6, " Earth and Rock Foundations and Fills" c.
SOP-2, " Foundation Evaluation and Treatment" Examination of the above procedures and discussions with responsible engineers disclosed the following unresolved item.
TVA specification N6C-875 requires that solution cavities or joints detected during drilling by observed rod drops be traced out.
The methods to be used in tracing out these features is not covered in any of the procedures.
Also, procedures do not address treatment of drill holes which have to be abandoned or are destroyed prior to completion of drilling and grouting.
The inspector qcestioned what criteria would be used in tracing out cavities and joints, and whether drill holes which had large grout takes, regardless of whether rod drops occurred during drilling, would be treated in the same manner as drill holes in which rod drops were observed.
The licensee's representatives indicated that they were unsure of their commitments to NRC regarding spray pond grouting.
The licensee will arrange a meeting with NRC Office of Nuclear Reactor Regulation to discuss its commitments and outline a program to be followed to complete spray pond grouting.
This item was identified to the licensee an Unresolved Item 518/79-01-04, 519/79-01-04, 520/79-01-04, and 521/79-01-04.
No deviations or items of noncompliance were ident.fied.
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7.
Lakes. Dams and Canals - Review o_f_guality Records, Units A-1 and B-2 The inspector examined quality records for the 40 drill holes which have been grouted to date in B-2 spray pond, for the 18 holes which have been grouted to date in A-1 spray pond, working drawings showing layout
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-5-of drill holes and grout takes, and partially completed geologic mapping of the rockfill foundation area.
Acceptance criteria examined by the inspector are those procedures listed in paragraph 6.
Examination of the drilling and grouting records disclosed that drill hole numbers 4001 through 4017, 4019, 4024 through 4029, 4031 and 4032 in A-1 spray pond had been destroyed prior to being grouted. Treatment of these holes will be determined in the resolution of the unresolved item discussed in paragraph 6.
No deviations or items of noncompliance were identified.
8.
Structural Concrete - Review of Quality Assurance Implementing Procedures, Units A-1, A-2, B-1, and B-2 The inspector performed a follow-up inspection of QA-QC controls for structural concrete. The following procedures were examined to determine if work activities and quality control and quality assurance functions were provided for as stipulated in NRC requirements, PSAR Section 3.8, PSAR Question 130.23, and SER Section 3.8.4.
a.
QCI-202, " Concrete Curing" b.
TVA Specification G-2, " Plain and Reinforced Concrete" c.
C. F. Braun Specification 300-01, " Concrete TVA STRIDE" d.
Plant B site instruction issued by QC to construction superinten-dents in Fall, 1978, " Cold Weather Concrete Protection" Examination of the above procedures disclosed the following unresolved item. TVA specification G-2 and C. F. Braun Specification 300-01 refer to ACI 306, " Recommended Practice for Cold Weather Concreting," for precautions to be taken during cold weather. AC1 306 recommends that if water curing is used, it be terminated 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> before the end of the temperature protection period.
ACI 306 states that harmful loss of moisture will not occur beyond the temperature protection period in concrete exposed to the air where the temperature is below 50 F.
Plant B site instruction, " Cold Weather Concrete Protection," generally follows the recommendation of ACI 306 and discussions with responsible engineers indicated that Plant A generally follows the recommendations of ACI 306.
However, G-2 and C. F. Braun Specifications are not clear regarding curing requirements in cold weather.
The specifications require curing of concrete for 14 days, require temperature protection for periods of 3, 6, or 14 days, and permit water curing.
The specifica-tions are not clear as to whether or not curing is required beyond the temperature protection period in cold weather and, if curing is required
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-6-beyond the temperature protection period, whether or not water curing is permitted.
In addition, G-2 permits interruption of curing for an 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> period for preparation of a succeeding lif t.
However QCl-202 does not require documentation of when this interruption occurs to insure that it does not happen frequently throughout the curing period.
This item was identified to the licensee a: unresolved item 518/70-01-05, 519/79-10-05, 520/79-01-05, and 521/79-01-05. This item is being eval-uated by the licensee and NRC.
No deviations or items of noncompliance were identified.
9.
Structural Concrete - Observation of Work and Work Activities - Unit B-2 The inspector examined curing of pour number B2R-1A in Unit B-2 Reactor foundation base mat.
Acceptance criteria examined by the inspector are those procedures listed in paragraph 8 and TVA specification G-22,
" Finishing Concrete Floor Surfaces."
Observation of work activities disclosed the following noncompliance.
The inspector examined pour number B2R-1A at 9:00 a.m. and at 4:30 p.m.
on January 3, 1979, and observed that approximately 25 percent of the surface area of the concrete pour was dry.
Discussions with QC personnel and examination of quality records indicated that the pour was placed on December 21-22, 1979, was being protected from loss of moisture for 14 days by water curing, and required temperature protection for a period of 14 days.
The inspector discussed the problem with respon-sible QC personnel who indicated that curing was being interrupted for a period of 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> in preparation for a succeeding lift (permitted in paragraph 12.1.d of TVA specification G-2) at the time of the inspector's observations. QC personnel indicated that immediate steps would be taken to insure compliance with procedures.
The inspector examined pour number B2R-1A again on January 4, 1979, at 7:30 a.m. and observed that approximately 35 to 40 percent of surface of the concrete pour was dry.
Failure to protect the concrete surface from loss of moisture as required by TVA Specification G-2 and C. F. Braun Specification 300-01 was identified to the licensee as Noncompliance Item 521/79-01-01.
This is an infraction.
No deviations were identified.
10.
Structural concrete - Review of Quality Records - Units A-l A-2, a
B-1 and B-2 The inspector examined quality records for pour numbers AIR-IA, A2R-1A, BIR-1A, and B2R-1A for Unit A-1, A-2, B-1, and B-2 reactor base mats respectively.
Acceptance criteria examined by the inspector are those procedures listed in paragr~ph '
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-7-The procedures do not specify the location where pumped concrete is to be sampled.
Examination of the quality records and discussions with responsible engineers disclosed the following deviation.
ANSI N45.2.5-1974 requires that pumped concrete be sampled from the end of the pump line.
Contrary to the above, pumped concrete samples for pour number AIR-1A, A2R-1A, BIR-1A, and B2R-1A were sampled at the batch plant, not at the pump line discharge. This was identified to the licensee as Deviation Item 518/79-01-02, 519/79-01-02, 520/79-01-02, and 521/79-01-02.
No items of noncompliance were identified.