IR 05000312/1973005
| ML19317F942 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 09/12/1973 |
| From: | Andrea Johnson, Spencer G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | |
| Shared Package | |
| ML19317F921 | List: |
| References | |
| 50-312-73-05, 50-312-73-5, NUDOCS 8002210652 | |
| Download: ML19317F942 (5) | |
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U. S. ATC:".IC ENERGY CO:OtISSION
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g-i il DIfi,CTOP. ATE Of idGUIATORY OPEPATIONS j.
REGION V
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RO Inspection Report No.
050-0312/73-05
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' Licensee: _ Sacr'amento Municipal Utility District Docket No.
050-0312
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P. O. Box 15830 Licens'c No.(s) CPPR-56
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_ Sacramento, California 95813 Priority
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Facility: Rancho Seco Unit No. 1 Category B
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Location: Clav Station. Sacrninento County. Calif.
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Type of Facility:
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Type of Inspection:
Routine, Unannoitnced O
Dates of Inspection:
August 27-29, 1973 Dates of Previous Inspection:
June 12-15, 1973
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Principal Inspector:
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t-A. D.,Jdhnson, Reactor Inspector
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Accocpanying Inspectors:
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(Date)
Other Accompanying Personnel:
None
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Reviewed by:
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G.'S.Spencej, Chief, Reactor' Operations (Date)
and Construction Branch s
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SUMMARY OF FINDINGS
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Enforcement Action-i.
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Licensee Action on Previously Identified Enforcement Items f~
None required for activities related to preoperational test program.
" Unusual' Occurrences
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Information contained in the licensee's report to the Directorate of Licensing dated August 3,1973, concerning " enrichment crossover" during
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fabrication of the Rancho Seco fuel rods was verified.
(Paragraph 3 of Details)
Design Changes
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None examined.
i Other Significant Findings
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Currect Findings s
A. -
The startup schedule was updated. Fuel loading has been scheduled to start en May 10, 1974.
B.
The undervoltage coils in the control rod drive trip breakers had been replaced as recommended by the vendor; however, the related test program had not been completed.
(R0 Report No. 050-0312/73-03, Paragraph 4 of Details)
C.
The procedure for the containment leakage rate test had been changed to include the required minimum duration period of six hours.
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(R0 Report No. 050-0312/73-03, Paragraph 6)
i D.
Corrective measures to increase the reliability of the meteorological data collection system had been completed with one exception. The redundant temperature sensors were received on site on August 27, 1973, and were scheduled to be installed and operational by September 5,1973.
(Paragraph 5 of Details)
E.
The performance tests of the Clann I station battery systems had been completed. The test'results net the acceptance criteria.
(Paragraph 6 of Details)
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'Barton differential pressure transmitters had not been installed in F.
systems required to perform safety functions.
(Paragraph 4 of Details)
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Management Interview
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The inspector met with the following licensee representatives at the conclusion of the inspection and discussed the scope and findings of the inspection as contained within this, report.
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D. Raasch
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Project Engineer
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'R. Rodriguez
- Plant Superintendent R. Colombo Technical Assistant
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P. Oubre'
Ass't. Superintendent, Nuclear Plant
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Operations J. Jewett Acting QA Director j
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No commitments were made by the licensee representatives.
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REPORT DETAILS i
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Persons Contacted
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Sacramento Municipal Utility District (SMUD)
i R. Colombo
- Technical Assistant P. Oubre'
- Ass't. Superintendent, Nuclear Plant Operations Ass't. Superintendent, Technical Support J. McColligan
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J. Jewett
- Acting QA Director-R. Powers
- Nuclear Engineer D. Whitney Nuclear I:ngineer
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D. Schoen
- Ass't. ~.?lant Electrical Engineer R. Dean Instrument & Control Foreman
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S. Farrington Plant Instrument & Control Engineer
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Babcock & Wilcox Company V.-Pritchett Nuclear Carvice Engineer
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2.
Status of Preoperational Test Program-An-updated' program schedule and status report were examined. The
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primary system cold hydro test tmn ncheduled for December 1973, with the containment Icakage rate test to follow during January 1974.
Initial fuel loading was set to neart on May 10, 1974.
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of the 75 tests scheduled to be performed prior to the cold hydro tent, seven had been satisfactorily completed. The results had been
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evaluated and approved as prescribed by the program. A total of 14
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additional tests had been started. and were in various stages of
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f completion. The, procedures for 74 of the 75 tests-to be-performed i-prior to the cold hydro test had been prepared and approved for use.
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3.
Fuel Enrichment Crossover
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By letter to the Directorate of Licensing dated August 3, 1973,
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plant that resulted in a crossover of some fuel pellets between fuel
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being processed for.the Rancho Seco core and a core for another
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nuclear plant. Reports of their investigation of the occurrence,
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prepared by the licensee QA auditors, were examined and discussed
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with the individual in charge of two separate audits conducted at
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the fuel vendor's plant. The information obtained from this examination confirmed the information included in the licensce's
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report to the AEC. The representative of the licensee was confident that the corrective measures taken by the vendor provided the
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necessary assurance that the errors that had been made had been g
corrected as indicated in the licensee's report. These measures i
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the possibly affected Rancho Seco fuel.
4.
Barton Differential Pressure Trnnnmitters (D/P Cells)
The licensee examined the use of Carton D/P cells at the station.
No cells of Model Nos. 386 or 363 have been installed at the station.
However, 33 Model No.- 384 cells have been installed throughout the facility. The licensee's evaluntion showed that none of the installed cells are required to perform a safety function. At the time of the inspection, the station personnel issued a nonconformance report on the installed cells and requested the Purchasing Department to contact the vendor and determine whether or not the cells had been supplied prior to June-1971, since they would be subject to a generic deficiency concerning the bonding technique of the strain gauge element which is attached to the centilever beam.
5.
Revisions to the Meteorological Data Collection System
= The revisions to the meteorological data collection system described in the~ licensee's letter to the Directorate of Licensing dated
'May 30, 1973, were examined. Tbo system changes to improve
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reliability were found to have in a completed as described by the licensee, with the one exception that the redundant te,mperature sensors.had not been installed. According to the licensee
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representative, the sensors had arrived on August 27 and would be
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installed, calibrated and placed in normal operation within the next week. Entries in the licensee's records indicrced that the
improved system became fully operational'on July 31, 1973, and that the system data had been checked at least daily to assure
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collection of reliable data.
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6.
-Class I Batteries
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The preop :n ational test of the four Class.I batteries and associated-sn completed, but the results had not been reviewed chargers
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and app.
the Test Working Group. The tests of non-Class I Nel not.been completed. The tests included a two battery
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the required load capacity. No discrepancies were observed.
I.1 aucition, the results of the tests performed by the battery vendor were examined. These tests included a check of (1) high rate discharge, (2). efficiency, and (3) capacity. The results confirmed that the battery performance characteristics were within the prescribed acceptance criteria.
7.
Nuclear Service Raw Water System i
Data related to the flow rate of the nuclear service raw water system h(,)
were examined and found to be conciatent with the design values shown
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in Table 9.4-1 of the FSAR. The portion of the test involving the-instruaentation had not been completed. The licensee's evaluation of.
the system performance test data, relating to the heat removal rate and capacity, were submitted to tbc Directorate of Licensing by letter dated June 29, 1973.
8.
Low Pressure Injection Hender Harmi.ng Pump Functional Test The results of this test confirmed the flow rate of the system to be in excess of the acceptance criteria of 100 gpm. with a differential pressure of 5 psig. The system delivered 100 gpm. with a differential pressure of 7 psig.
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