IR 05000327/1979012
| ML19273C007 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 03/23/1979 |
| From: | Herdt A, Mcfarland C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML19273C004 | List: |
| References | |
| 50-327-79-12, 50-328-79-07, 50-328-79-7, NUDOCS 7906180731 | |
| Download: ML19273C007 (6) | |
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UNITED STATES pm arou NUCLEAR REGULATORY COMMISSION
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REGION 11 o
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101 M ARIETTA STREET, N.W.
- ATLANTA, GEORGIA 30303 o,s,*****/
Report Nos. : 50-327/79-12 and 50-328/79-07 Licensee: Tennessee Valley Authority 500 A Chestnut Street, Tower II Chattanooga, Tennessee 37401 Facility Name: Sequoyah Nuclear Plant, Units 1 and 2 Docket Nos. : 50-327 and 50-328 License Nos. : CPPR-72 and CPPR-73 Inspection at Sequoyah Site near Daisy, Tennessee
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[ D'79 Inspector:
C. R.41 a land Date Signed 3 V3'7'[
Approved by:
A. R. Herdt, Section Chief, RC&ES Branch Date Signed SUMMARY Inspection on February 5-7, 1979 Areas Inspected This routine, unannounced inspection involved 21 inspector-hours onsite in the areas of noncompliances, unresolved items, 10 CFR 50.55(e) items and inspector follow-up items.
Results:
No apparent items of noncompliance or deviations were identified 2353 069 7906180 7f/
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DETAILS 1.
Persons Contacted Licensee Employees
- G. G. Stack, Project Manager, Sequoyah Nuclear Project (SNP)
- S. Duhan, Office of Engineering Design and Construction (OEDC),
QA Staff
- R. W. Farrell, Supervisor, Quality Engineering Records Unit
- E. C. Pendergrass, Engineer, QC Re:ords Unit (QCRU)
- D. L. Wall, Nuclear Licensing, Division of Engineering Design (EN DES) QA
- M. A. McBurnett, Nuclear Engineer, Regulatory Staff
- R. B. Bruce, QA Engineer, Construction QA Unit W. M. Morgan, QA Engineer, Construction QA Unit J. W. Hughes, General Foreman, Construction L. D. Clift, Jr., Mechanical Engineer J. T. Lewis, Mechanical Engineer
- Attended exit interview.
2.
Exit Interview The inspection scope and findings were summarized on February 7, 1979, with those persons indicated in Paragraph I above. The scope of the inspection and the findings concerning the areas of noncompliance, unresolved items, 50.55 (e) items and inspector follow up items were reviewed. The inspector stressed the need for more evidence of TVA corporate interest in closing the construction deficiencies reported under 10 CFR 50.55 (e). A review of the documentation available to backup the final report by a corporate QA group such as the construction QA group (for construction items) is a standard operating procedure at plants where the utility is not the same corporation as the architect engineer and constructor.
The licensee's status reporting of NRC inspection findings will be rerevised to emphasize the interests of TVA as well as the interests of the NRC. This will be inspected as followup item 327/79-12-13 and 328/79-7-13.
3.
Licensee Action on Previous Inspection Findings a.
(Closed)
Items of Noncompliance, Infraction 50-328/79-18-02, Piping Supports. The inspector reviewed the TVA October 25, 1978 and November 14, 1978 response letters to Region II and the corrective action steps taken by TVA to correct the problem and 2353 070
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-2-to avoid further noncompliance. The inspector reviewed Sequoyah Nuclear Project (SNP) Inspection Instruction (II) No. 38 "Inspec-tion of Site Fabricated Assemblies" Revision (Rev) 6 effective November 30, 1978; SNP II No. A-3, " Inspection and Cycling of Shock Suppressors" Rev. 3 effective November 26, 1978; SNP II No.
50 " Equipment Lubrication Inspection", Rev. I effective December 8, 1978; SNP II No. 29 " Inspection of Variable Springs" Rev.1, effective November 30, 1978. The inspector observed representative pipe supports and snubbers in Unit 2 and the work related to removing the vibrotool marked numbers from support No. 2-RHRH-463.
b.
(0 pen) Item of Noncompliance, Deficiency 327/78-27-01 and 328/78-21-01 Corporate Audits. The inspector reviewed the TVA November 30, 1978 and December 19, 1978 response letters to Region II. The OEDC QA audit of the Division of Construction, including the SNP-organization structure, responsibilities, functions, interfaces and overall QA program is currently scheduled to be conducted between March 26 and April 6,1979.
c.
(Closed) Unresolved Item 328/78-10-01 and 328/78-07-01, Soil Compaction Documentation. The inspector and the Region II staff has reviewed the SNP II No. 94 " Inspection of Backfill Materials Placement" Revision 1, which has been revised to address documen-tation of soil compaction by the Nuclear Density Method.
4.
Unresolved Items Unresolved items were not identified during this inspection.
5.
Licensee Identified Items TVA has reported a number of items to Region II as reportable items in compliance with 10 CFR 50.55(e) and the inspector reviewed the items below and the supporting documentation, and discussed the items with responsible staff during the inspection.
a.
(CLOSED) Item 327/78-09-03 and 328/78-06-05. Deficient concrete Cells in the ERCW Pumping Station Access Roadway. The Region II staff has reviewed the TVA revised final report to Region II as submitted enclosed to their letter dated November 29, 1978, the interim reports referenced therein, and the final report submitted August 1, 1978, SCR 37. Certain concrete cells were removed, the tremie concrete placement procedures were revised to ensure proper foundation cleanup and to bring the tremic concrete placement procedure in accordance with ACI 304, " Recommended Placement of Tremie Concrete," An elaborate foundation inspection program was utilized.
Cores were taken and analyzed, and the results are summarized in the revised final report. The SNP FSAR is being 2353 071
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-3-revised to incorporate the description of the ERCW pumping station, access roadway and cccess dike. Field observations by Region II inspectors were previously reported in IE Ppts. 50-327/78-34 and 50-328/78-25.
b.
(CLOSED)
Item 327/78-01-14, Shield Building Interior Concrete Surface Strength. The Region II staff has reviewed the TVA final report to Region II submitted July 21, 1978, and the additional information requested by Region II at an exit meeting October 13, 1978 and submitted by the TVA letter dated January 31, 1979. NCR 72 D.
Core samples taken from the Unit I and Unit 2 shield building walls at SNP and have been tested at the TVA Singleton Materials Engineering Laboratory (SML) and the U.S. Army Corps of Engineers, Waterways Experiment Station (WES). The TVA evaluation determined that the expansion anchors in Unit I were fully adequate for design requirements; however, replacement anchors in Unit 2 will have a deeper seating anchor.
c.
(CLOSED) Item 327/78-14-04, and 328/78-10-03 High Pressure Fire Protection System Submersible Pumps. The inspector reviewed the TVA responses to Region II dated September 14, 1978, November 29, 1978 and December 28, 1978, relative to the subject identified as NCR 962. Pressure signature tests of the pump indicated that the apparent reason for the separation of the impeller from the shaft was due the method of attaching the impeller to the pump shaf t.
The pumps are being modified to reattach the impeller by the thrust ring construction method rather than a lock collet method.
The inspector reviewed documentation of the corrective action and documentation of the TVA review of all the vertical turbine type pumps in Sequoyah and Watts Bar. There are no other pumps with lock collet construction at either plant.
d.
(CLOSED) Item 327/78-38-03 and 328/78-27-03, Grounding of Tempera-ture Controller Power Supply Chassis. The inspector reviewed the TVA responses to Region II dated August 17, 1978 and November 24, 1978, NCR 1065. The inspector reviewed the cogineering documenta-tion (EN DES memo dated August 4,1978) and the QC inspection report dated September 20, 1978 confirming the completed corrective action of installing suitable insulation to prevent electrical shorts.
e.
(CLOSED) Item 327/78-38-05 and 328/78-27-05, Plant Configuration Drawings. The inspector reviewed the TVA responses to Region II dated October 16, 1978 and January 4, 1979, NCR-2P, 3P.
The inspector reviewed:
(1) TVA training records (for three grouos)
relating to Standard Operating Procedure (SOP) No. 308 "Configura-tion Control" Revision 1 dated December 29, 1978; (2) reviewed S0P No. 308 relative to the " drawings of record" for the actual 2353 072
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e-4-configuation, and for the transferring of a system of drawings of record that represent the "as constructed" plant configuration; (3) Construction Procedure (CP) No. P-10 " Control of Quality Assurance Documents" Revision 17 dated December 29, 1978; and (4)
the closed NCR-2P and 3-P verified by engineering and inspection.
CP No. P-10 has been revised to document the method used to control drawings relative to design drawings and plant configura-tion changes at the time of the tranfer of responsibility from Construction to Power Production f.
(OPEN) Item 327/79-12-01 and 328/79-07-01, Upper Head Injection (UHI) Rate. Region II has received the TVA final report dated December 28, 1978, NCR MEB 78-4. Redesign and test work is being conducted to correct deficiencies in the preoperational testing of the UHI system of Unit 1.
This item was not inspected.
g.
(OPEN)
Item 327/79-12-02 and 328/79-07-02, Signal Cable Used Without Proper Environmental Qualification Tata. Region II has received the TVA final report dated January 4, 1979 and the revised final report dated January 23, 1979, NCR EEB 78-4.
Fully qualified cable will be used to replace the deficient signal cable. This item was not inspected.
h.
(OPEN) Item 327/79-12-03 and 328/79-07-03, Omitted Lateral Restraints in the Chemical Volume Control System (CVCA Piping.
Region II has received the TVA final report dated January 12, 1979, NCR CEB 78-2.
A lateral restraint, which is needed during a seismic event, was discovered to have been omitted due to an inadvertent omission from the load tables.
One lateral restraint was omitted on each unit. This item was not inspected.
i.
(OPEN) Item 327/79-12-04 and 328/79-07-04, Heating, Ventilating and Air-Conditioning (HVAC) Penetrations in Containment Design.
Region II has received TVA's first interim report dated January 12 1979, NCR CEB 78-3.
Deficiencies in the load definition in the design specification have been identified.
Proper loads have been supplied to the contractor / designer. Reanalysis has been
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initiated. This item was not inspected.
j.
(OPEN) Item 327/79-12-05 and 328/79-05, Additional Fire Dampers and Fire Doors in Control Building and Auxiliary Building. Region II has received TVA's first interim report dated January 17, 1979, NCR SWP-78-S-2. Eight additional fire dampers in the HVAC ductwork and eight additional fire doors in the Control and Auxiliary Buildings will be provided to more clearly define the compartmen-tation boundaries. This item was not inspected.
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(OPEN) Item 3/7/79-12-06 and 328/79-07-06, Seismic Qualification of Heating and Ventilating (H&V) System Ductwork. Region II has received the TVA final report dated January 29, 1979, NCR SWP-78-S-3.
Additional hangers will be installed in the auxiliary building to provide seismic catagory I integrity. This item was not inspected.
1.
(OPEN) Item 327/79-12-07 and 328/79-07-07.
Metal Shavings in Valve Operators.
Region II has received TVA's first interim report dated February 1, 1979, NCR 1354. Metal shavings were found in certain hydraulic operators of the discharge pressure control valves of the motor driven auxiliary feedwater pumps.
This item was not inspected.
m.
(OPEN) Item 327/79-12-08 and 328/79-07-08, Piping Embedded in Structural Concrete. Region II has received the TVA first interim report dated February 8, 1979, NCR CEB 79-1.
Differences in the code requirements of the ASME and the Americat Concrete Institute are to be analyzed and evaluated. This item was not inspected.
n.
(OPEN) Item 327/79-12-09 and 328/79-07-09, Main Feedwater Line Water Hammer.
TVA informed Region II of a potential 10 CFR 50.55(e) item (NCR MEB 79-01) relative to the subject on January 15, 1979.
In response to a Westinghouse report on water hammer computer analysis of the potential problem have been initiated.
This item was not inspected.
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(OPEN) Item 327/79-12-10, High Flow Alarm in the ERCW Cooling Water Piping.
TVA informed Region II of a potential 10 CFR 50.55(e) item (NCR MEB 79-4) relative to the subject on January 29, 1979.
A high flow alarm may be needed in the ERCW piping to alert the operator to close certain isolation valves following a break in certain class H ERCW piping in certain modes of operation.
This item was not inspected.
p.
(OPEN) Item 327/79-12-11 and 3?8/79-07-11, Relay Tachometer Failures on Diesel Generators.
TVA informed Region II of a potential 10 CFR 50.55(e) item (NCR SP) relative to the subject on January 30, 1979. Dynalco type RT 2429 relay tachometers have failed to date. This item was not inspected.
q.
(OPEN) Item 328/79-07-12, Deficient Concrete in Unit 2 Crane Wall. Region II has received the final report dated January 4, 1979, NCR 1079, and an additional information letter dated February 5,1979, on the subject. Thin steel plates are to be installed to protect the soft concrete identified at a certain section of the Unit 2 crane wall. This item was not inspected.
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