ML19250A632
| ML19250A632 | |
| Person / Time | |
|---|---|
| Site: | Hartsville  |
| Issue date: | 09/11/1979 |
| From: | Blake J, Herdt A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML19250A623 | List: |
| References | |
| 50-518-79-17, 50-519-79-17, 50-520-79-17, 50-521-79-17, NUDOCS 7910240096 | |
| Download: ML19250A632 (4) | |
See also: IR 05000518/1979017
Text
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UNITED STATES
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NUCLEAR REGULATORY COMMISSION
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REGION 11
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101 MARIETTA ST
N.W.. sulTE 3100
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ATLANTA, G EORGIA 30303
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Report Nos. 50-518/79-17, 50-519/79-17, 50-520/79-17, and 50-521/79-17
Licenset: Tennessee Valley Authority
500A Chestnut Street
Chattanooga, Tennessee 37401
Facility Name: Hartsville
Docket Nos. 50-518, 50-519, 50-520, and 50-521
License Nos. CPPR-150, CPPR-151, CPPR-152, and CPPR-153
Inspection a
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uclear Plant near Hartsville, Tennessee
Inspector:
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J.
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lake
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Date Signed
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Approved by.
A. R. Herdt, Section Chief, RCES Branch
'Date Signed
SUMMARY
Inspection on August 14-17, 1979
Areas Inspected
This routine, unannounced inspection involved 26 inspector-hours onsite in the
areas of steel structures and supports - observation of welding activities;
previous inspection findings; and licensee identified items.
Results
Of the three areas inspected, no items of noncompliance or deviations vere
identified.
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DETAILS
1.
Persons Contacted
Licensee Employees
R. T. Hathcote, Project Manager
- W. R. Brown, Construction Engineering, STRIDE
- W. T. Quinn, Construction Engineering, BOP
- G. A. Gonsalves, Construction QA
- H. S. Sheppard, Assistant Construction Engineer, QC, STRIDE
- E. D. Peoples, Assistant Construction Engineer, QC, B0P
- W. O. Brown, Assistant Construction D,gineer, Engineering Services
- J. T. McGehee, Administrative Assis*,nt, STRIDE
- S. P. Stagnolia, Welding QC Unit Supervisor, STRIDE
- H. H. Jones, Construction
- L. A. Wilson, Construction
Other licensee employees contacted included several construction craftsmen,
QA and QC technicians, and engineers.
- Attended exit interview.
2.
Exit Interview
The inspection scope and findings were summarized on August 17, 1979 with
those persons indicated in Paragraph 1 above. The inspector discussed the
licensees actions regarding corrective action for the construction defi-
ciency report concerning the anchor chair welds described in Paragraph 5.
3.
Licensee Action on Previous Inspection Findings
(Closed) Noncompliance 50-518, 519, 520, 521/79-12-01, Outdated QA Program
Description. The licensee has revised the QA Manual to delete CEP-2.01.
(Closed) Noncompliance 50-518, 519, 520, 521/79-12-03, Welding Control
Procedures do not clearly define requirements. The licensee has prepared
and implemented a standard operating procedure nq, SOP-34, " Weld Inspection
Documentation" which provides the guidance requirements for inspection and
documentation of welding operations.
4.
Unresolved Items
Unresolved items were not identified during this inspection.
5.
Licensee Identified Items
On August 2,1979 the licensee reported that rejectable weld def-iciencies
had been identified in previously QC accepted welds in Units A-1 (50-518)
and B-1(50-520). The deficiencies involved weld size, undercut, and weld
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surface condition. The welds involved were fillet welds attaching
stiffener plates to the containment wall and base plate. TVA reported that
all of these welds would be reinspected and the QC inspectors involved
would be retrained.
At the time of the NRC inspection licensee QA } ersonnel were just complet-
ing the final reinspection of the anchor chair fillet welds.
The inspector observed the visual inspection activity by the TVA QA inspec-
tors; reviewed a sampling of the data gathered during the reinspection;
reviewed the requalification training program being conducted by the QA
training facility for the QC inspectors involved; discussed the problem
with QA and welding engineering unit personnel; and visually inspected
approximately thirty of the welds that had been rejected during the
rei:,spection effort.
The inspector informed the licensee that due to the nature of the most
predominant rejectable indications - undersize welds, weld undercut, and
surface condition problems such as arc strikes and surface irregularities,
it appeared that the corrective action of retraining the QC inspectors was
only treating a part of the problem.
(Welds with the deficiencies listed
above should not have been presented for final QC inspection).
Therefore
consideration would have to be given to providing training to the welders
and their supervisors concerning visual acceptance criteria for welds, and
this matter discussed in the final 50.55(e) report.
For tracking purposes this item was assigned number 50-518/79-17-01, and
50 520/79-17-01, " Containment Anchor Bolt ' Chair Weld' Deficiencies".
6.
Inspector Followup Items
(0 pen) IFI No. 50-518, 519, 520, 521/79-12-04, QA Training Program for
Welders.
The inspector noted the QA training plan still povides for
16 hours1.851852e-4 days <br />0.00444 hours <br />2.645503e-5 weeks <br />6.088e-6 months <br /> of training for welders. Because of the nature of the construc-
tion deficiency discussed in paragraph 5 above, the inspector informed the
licensee that this item concerning QA training would remain open pending
completion of the work on the anchor chairs.
7.
Steel Structures and Supports - Observation of Welding Activities Within
Containment
The inspector observed welding activities in the Unit A-1 anc B-1 contain-
ments. The welding observed included the following:
A.
Welding of the vent tube structure to the containment base plate (Unit
A-1).
B.
Stainless steel cladding of several vent tube structure vertical seams
(Unit A-1).
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C.
Repair Welding of Unit A-1 Reactor Vessel Pedestal.
D.
Welding and grinding of anchor chair fillet welds in Unit B-1.
The inspector fo nd that the level of activity in the welding of safety
related structures was low due to the majority of the welding QC inspectors
being retrained.
There were no items of noncompliance or deviations in this area of inspec-
tion.
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