IR 05000259/1981033
| ML20039B608 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 11/30/1981 |
| From: | Herdt A, York J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML20039B603 | List: |
| References | |
| 50-259-81-33, 50-260-81-33, 50-296-81-33, IEB-79-02, IEB-79-14, IEB-79-2, NUDOCS 8112230302 | |
| Download: ML20039B608 (5) | |
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'o UNITED STATES 8"
i NUCLEAR REGULATORY COMMISSION g
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REGION II
o 101 MARIETTA ST., N.W., SUITE 3100 k.....o ATLANTA, GEORGIA 30303 Report Nos. 50-259/31-33, 50-260/81-33, 50-296/81-33
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Licensee:
Tennessee Valley Authority 500A Chestnut Street, Tower II Chattanooga, TN 37401 Facility Name:
Browns Ferry
Docket Nos. 50-259, 50-260, 50-296 License Nos. DPR-33, DPR-52, DPR-68 Inspection at Browns Ferry near Decatur, Alabama Inspector:
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A. R. Herdt, Section Chief Date ' Signed Engineering Inspection Branch Engineering and Technical Inspection Division SUMMARY Inspection on November 9-13, 1981 Areas Inspected This routine, unannounced inspection involved 35 inspector-hours on site in the areas of pipe support baseplate designs using concrete expansior anchor bolts (IE Bulletin 79-02); seismic analysis for as-built safety-related piping systems (IE Bulletin 79-14).
Results Of the two areas inspected, no violations or deviations were identified.
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REPORT DETAILS-1.
Persons Contacted Licensee Employees G. T. Jones, Power Plant Superintendent
- J. R. Bynum, Asst. Power Plant Superintendent
- T. L. Chinn, Plant Compliance Supervisor
- R. Cole, QA Site Representative, Office of Power
- R. Boyer. TVA Public Affairs
- J. R. Norris, TVA QA J. Traglia, IEB 79-02, IEB 79-14 Supervisor J. Miller, Asst. Field Services Supervisor J. Beason, CEB ENDES
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Other licensee employees contacted included construction craftsmen, techni-cians and office personnel.
NRC Resident Inspector R. Sullivan
- J. Cha se
- G. Paulk
- Attended exit interview 2.
Exit Interview The inspection scope and findings were summarized on November 13, 1981 with those persons indicated in paragraph 1 above. The inspector described the areas inspected and discussed the results of the inspection findings.
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Licensee Action on Previous Inspection Findings Not inspected.
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Unresolved Items Unresolved items were not identified during this inspection.
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(0 pen) IE Bulletin 79-02: Pipe Support Base Plate Designs Using Concrete Expansion Anchors The licensee has completed the inspections of concrete anchors required by IEB79-02. The greatest majority of the concrete anchors are the shell type.
The wedge type concrete anchors at Browns Ferry cannot be disassembled for inspection because they are grouted, however, the licensee has inspection records indicating that these anchors were inspected when they were
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installed.
The shell type concrete expansion anchors were dimensionally inspected, and when a dimension was questionable a tension or pull test was performed to determine the acceptability of the anchor. In addition, the number of concrete anchors specified in TVA general specification G-32 were pull tested. One area, the Cortrol Rod Drive Headers, on all three of the units has not been inspected because of (a) the high radiation in the area and (b) a modification is planned for this area that would require a rein-spection.. Tentatively the first modification and inspection is scheduled for Unit 2 in April, 1982. The licensee's inspections revealed that some of the anchor holes in the base plates had been burned instead of drilled.
If the burned holes are found to be out of tolerance (too large) a repair consisting of the use of a square washer and epexy grout are used.
This repair is authorized by TVA general specification G-32. Approximately 4,000 holes have been repaired and the following holes are still to be repaired:
Unit 1 - holes on 3 hangers Unit 2 - 339 holes Unit 3 - 701 holes The concrete anchor repairs have been stopped because the 13 people that were making inspections and repairs are being used in the current outage on Unit 3 which is scheduled for 127 days and began on October 30th.
With a full crew (13 people) the licensee can repair 30 to 40 anchors per day. The safety factor is not affected by this repair.
Within the areas inspected no violations or deviations were identified.
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(0 pen) IE Bulletin 79-14:
Seismic Analysis for As-Built Safety-Related Piping Systems All piping and hanger inspections required by IEB 79-14 are complete for Units 1 and 3.
The inspections are completed for the inaccessible areas on Unit 2.
The status of the Unit 2 accessible areas at the time of the inspection were as follows:
Completed and sent to ENDES a) Condensate Storage Supply Ring Header b) Drywell Control Air c) Standby Gas Treatment d) Residual Heat Removal Service Water e) Radwaste Sump Pump Discharge f) Standby Liquid Control g) Torus Attached Piping Targeted to be finished by end of November,1981 a) Reactor Core Isolation Coolant b) High Pressure Coolant Injection c) Drywell and Torus Purge
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Targeted to be completed by mid December,1981 a) Core Spray b) Emergency Equipment Cooling Water c) Fuel Pool Coolant d) Reactor Building Component Cooling Water e) Residual Heat Removal The accessible area inspections on Unit 2 were approximately 65 percent complete.
As inspections are
, pleted the onsite civil engineer from TVA ENDES performs initial evaluations and if a descrepancy is considered to be a potential safety problem, action is taken in accordance with the facility technical specifications. The inspector reviewed the following inspection results with site EN DES civil engineer:
a) Drawing No. 47A451-35, Hanger No. R134 b) Drawing No. 47A451-34. Hanger No. R133
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c) Drawing No. 47A451-33, Hanger No. R132 d) Drawing No. 47A451-610, Hanger No. H-109 e) Drawing n0. 47A451-609, Hanger No. H-108 All of these hangers are on Unit 2 in the Emergency Equipment Cooling Water System.
Reinspections were performed on the following hangers or restraints that had previous inspections performed,to the requirements of IEB 79-14:
Unit 1 a)
Drawing No. 47W920, Hanger No. R-13 in the Drywell and Torus Purge System b)
Drawing No. 47W920, Hanger No. R-11 in the Drywell and Torus Purge System c)
Drawing No. 47A458, Hanger No. H-33 in the Core Spray System d)
Drawing No. 47A458, Hanger No. H-34 in the Core Spray System Unit 2 a)
Drawing No. 47A452-416, Haager No. H-241 in the Residual Heat Removal System b)
Drawing No. 47A452-418, Hanger No. H-244 in the Residual Heat Removal System c)
Drawing No. 47A456-174, Hanger No. H-28 in the Reactor Core Isolation Cooling System
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Drawing No. 47A456-175, Hanger No. H-29 in the Reactor Core Isolation Cooling System e)
Drawing No. 47A456-176. Hanger No. H-30 in the Reactor Core Isolation Cooling System Unit 3 a)
Drawing No. 47A458-281, Hanger No. H-34 in the Core Spray System b)
Drawing ao. 47A458-280, Hanger No. H-33 in the Core Spray System The inspector examined modifications and documentation for the following hangers or restraints:
UnitJ a)
Drawing No. 47A482-11, Hanger flo. R-10 in tr,e Radwaste Sump Pump Discharge System b)
Drawing No. 478450, Hanger No. R-16 in the Residual Heat Removal Storage Water System c)
Drawing No. 47B451-20, Hanger No. R-43 in the Emergency Equipment Cooling Water System d)
Drawing No. B-P 1933-1, Hanger No. R-1 in the High Pressure Coolant Injection System e)
Drawing No. D-P 1934, Hanger No. R-2 in the High Pressure Coolant Injection System Uni'_2 a)
Drawing No. 47W455-5, Hanger No. R24 in the High Pressure Coolant Injection System (Repaired broken welds between main strut segment and threaded plug insert)
UrJt 3 a)
Drawing No. 47W451-7, Work Plan No. TR99951 (Capped the supply and return lines to emergency cooling units. This was a temporary system and had not been qualified by ENDES)
The inspection efforts on IEB 79-14 involve 24 people who work one 10 hour1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> shift a day. The inspectors work 12 days and then have 2 days off. Of the 24 people, 20 are TVA steam fitter-sketchmen and 4 are contracted thru Butler Services.
Within the areas inspected no violations or deviations were identified.