IR 05000327/1993019
| ML20045H886 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 06/21/1993 |
| From: | Decker T, David Jones NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML20045H884 | List: |
| References | |
| 50-327-93-19, 50-328-93-19, NUDOCS 9307220072 | |
| Download: ML20045H886 (5) | |
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UNITED STATES t
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BUCLEAR REGULATORY COMMISSION
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' 101 MARIETTA STREET, N.W.
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ATLANTA, GEORGI A 30323
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JUN 2 21933
Report Nos.:
50-327/93-19 and 50-328/93-19 Licensee: Tennessee Valley Authority 6N 38A Lookout Place
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1101 Market Street Chattanooga, TN 37402-2801 Docket Nos.:
50-327 and 50-328 License Nos.: DPR-77 and DPR-79 Facility Name: Sequoyah 1 and 2 Inspection Conducted: May 24-28, 1993
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Date Signed D. W. Jones Approved by:
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4[/h3 T. R. Decker, Chief
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Date Signed Radiological Effluents and Chemistry Section
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Radiological Protection and Emergency Preparedness Branch
Division of Radiation Safety and Safeguards SUMMARY Scope:
This routine, announced inspection was conducted in the areas of post-accident sampling systems (PASS) and training.
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Results:
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No violations or deviations were identified.
The licensee had improved their maintenance on the PASS but reliability of'the in-line measurement instruments continued to be a problem. Training records had not been kept sufficiently current to readily determine which personnel were qualified to operate the PASS by demonstrating the capability to obtain-and ' analyze samples within three hours. The recently implemented quality control program for the PASS has improved the accuracy of. analytical results.
Modifications to the PASS intended for improved system performance have been developed but no modification work had been started. The capability to collect samples for analysis by either the onsite laboratory or an offsite laboratory had remained intact (Paragraph 2).
The licensee had developed an adequate plan for chemistry training program improvements (Paragraph 3).
9307220072 930622 DR ADOCK 0500
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REPORT DETAILS 1.
Persons Contacted Licensee Employees t*D. Adams, Program Manager, Chemistry D. Bayles, Senior Chemistry Instructor, Training t*R. Beecken, Plant Manager
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- D. Bodine, Manager, Chemistry Support t*R. Driscoll, Manager, Site Quality tR. Fenech, Site Vice President tR. Goodman, Manager, Technical Training
- S. Harvey, Program Manager, Corporate Chemistry 10. Kent, Manager, Radiological Control and Chemistry tS. Poage, Manager, Audits and Assessment
- G. Rich, Manager, Corporate Nuclear Chemistry 18. Schofield, Manager, Licensing
- M. Shepherd, Manager, Site Training t*M. Skarzinski, Manager, Technical Programs and Performance G. Taylor, Training Specialist, Corporate Training G. Taylor, Radiochemical Analyst, Chemistry
- R. Thompson, Manager, Compliance Licensing t*J. Ward, Manager, Engineering and Modifications t*C. Whittemore, Licensing Engineer, Compliance Other licensee employees contacted included engineers, technicians, and administrative personnel.
Nuclear Regulatory Commission W. Holland, Senior Resident Inspector t*S. Shaeffer, Resident Inspector tAttended entrance interview
- Attended exit interview 2.
Post Accident Sampling Systems (84750)
Technical Specification (TS) 6.8.5.e for both units required the licensee to establish, implement, and maintain a program which would ensure the capability to obtain and analyze samples of reactor coolant, radioactive iodines, and particulates in plant gaseous effluents and containment atmosphere under accident conditions. The program was required to include training of personnel, procedures for sampling and analysis, and provisions for maintenance of sampling and analytical
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equipment.
The licensee's program included the use of separate post-accident sampling systems (PASS) for each unit. The systems had the capability of collecting samples of reactor coolant and containment atmosphere and i
analyzing those samples with in-line measurement instruments. The systems also had the capability of collecting diluted and undiluted grab i
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samples for analysis by either the onsite laboratory or an offsite laboratory. The in-line measurement capabilities included chloride concentration, dissolved oxygen concentration, hydrogen concentration, pH, and conductivity of reactor coolant samples and hydrogen concentration of containment atmosphere samples. Diluted samples were
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used for laboratory measurements of boron concentration and gamma activity of reactor coolant and for oxygen concentration and gamma activity of containment atmosphere.
The program also included the following procedures related to operation and control of the systems.
1 & 2-PI-CEM-043-487.0
" Sentry Post Accident Sampling System
Operability Verification and Calibration" 1 & 2-TI-CEM-043-066.1
" Post-Accident Sampling and Analysis"
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0-TI-CEM-260-020.9
" Post-Accident Sampling Quality Control
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Program" The inspector reviewed and discussed with the licensee, selected data generated by the performance of the above procedures during the period January 1992 through May 1993.
Procedures 1 & 2-PI-CEM-043-487.0 were performed quarterly to determine whether the sample dilution and analytical portions of the systems were operable-and producing accurate results.
Those tests were performed by injecting laboratory prepared calibration standards into the system for analysis and comparing the
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analytical results to the laboratory prepared values. The licensee's evaluation of these data revealed that new dilutior, factors needed to be established in order to obtain more accurate results for water samples.
A new dilution factor had'been established for the Unit I system and studies were continuing for the Unit 2 system.
Reliability of the in-line measurement instruments continued to be a problem for the
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licensee.
The gas chromatograph, used for analysis of hydrogen concentration, in the Unit I system had been repaired during the previous six months but was currently inoperable. A work request had been issued for its repair.
Procedures 1 & 2-TI-CEM-043-066.1 were for use in obtaining and analyzing samples under accident conditions. Those procedures were also used for training of personnel in the operation of the systems. The licensee indicated that their goal was to have most of. their Chemistry
Technicians and Shift Supervisors trained and capable of obtaining and analyzing samples within three hours of a request for a sample.
Training sessions had been conducted during most of the months over the
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period January 1992 through May 1993, and the scope of the training during individual sessions was varied among the following:
discussion of equipment operation; simulated tests in which no samples were taken but the equipment was operated; and timed tests in which reactor coolant and containment atmosphere samples were obtained and analyzed. The licensee indicated that prior to August 1992, the tests performed during training had not been timed. The training records indicated-that since
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January 1992, eight tests in which samples were obtained and analyzed had been conducted and that two of those tests had been halted because the three hour time limit was exceeded. The results of those tests had not been compiled and records of qualification had not been completed to indicate how many technicians and supervisors had demonstrated the capability to obtain and analyze samples within three hours. The inspector also reviewed records related to an Emergency Preparedness Drill conducted on October 7, 1992, during which the Unit 1 PASS was tested. Those records indicated that the drill team successfully completed the sampling and analyses within the required three hours.
Procedure 0-TI-CEM-260-020.9 was implemented during November 1992 to establish a quality control (QC) program for the PASS.
The procedure included acceptance criteria for comparisons of analytical results obtained from the PASS to results obtained from routine sampling.
The records generated by this procedure indicated that the accuracy of the analytical results from the PASS was improving.
During the inspection conducted on October 26-30,1992, (Reference Insoection Report Nos. 50-327/92-33 and 50-328/92-33), the licensee indicated that several modifications for improving the performance of the post-accident systems had been approved and were scheduled for completion during fiscal years 1993 and 1994.
During this inspection, the licensee indicated that no work had been started for those modifications. The licensee's progress of these modifications will be reviewed during subsequent inspections.
Based on the above reviews and discussions, the inspector determined the following:
progress had been made in maintenance of the PASS but reliability of the in-line measurement instruments continued to be a problem for the licensee; training records had not been kept sufficiently current to readily determine which personnel were qualified to operate the PASS by demonstrating the capability to obtain and analyze samples within three hours; implementation of a QC program for the PASS has improved the accuracy of analytical results; modifications to the PASS intended for improved system performance have been developed but no modification work had been started; the capability to collect samples for analysis by either the onsite laboratory or an offsite laboratory had remained intact. It was concluded that the licensee had complied with the above TS requirements.
No violation or deviations were identified.
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Training (84750)
TS 6.4 for both units required the licensee to maintain a retraining and replacement training program for the facility staff. The licensee's training program for the Chemistry staff was described in procedure TRN-21, Revision (Rev.) 1, " Chemistry Personnel Training" and included
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provisions for initial basic skills training, in-plant qualification, and continuing training. The procedure specified the training subject matter and the minimum acceptable score for written examinations.
The
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inspector reviewed the records for initial training of one Chemistry Shift Supervisor and one Chemistry Technician. Those records indicated that the two individuals selected had satisfactorily completed the specified basic skills training.
During discussions of the program with licensee training personnel, it was indicated to the inspector that, as a result of a recent independent audit finding, a program improvement plan had been initiated. One element of the improvement plan was to administer an examination to determine the Chemistry Technicians current level of basic chemistry knowledge. The licensee indicated that the examination was developed, conducted, and scored by their Corporate Training personnel. The records of the examination were retained at the Corporate Office and not readily available at the site, but the licensee indicated that the scores ranged from 40 to 60 percent. Based on those results, the licensee plans to implement changes intended to strengthen their continuing training program.
Previously, the subject matter for continuing training consisted primarily of current chemistry related issues and industry events.
The program will be changed such that 80 percent of the subject matter will be basic chemistry knowledge and 20 percent current issues and events. The minimum number of hours for continuing training will also be increased from 80 to 140 hours0.00162 days <br />0.0389 hours <br />2.314815e-4 weeks <br />5.327e-5 months <br /> biennially. The licensee's progress in the training program imp *.ovements will be reviewed during subsequent inspections.
Based on the above reviews and discussions, it was concluded that the licensee had developed an adequate plan for chemistry training program improvements.
No violations or deviations were identified.
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Exit Interview The inspection scope and results were summarized on May 28, 1993, with those persons indicated in Paragraph 1.
The inspector described the areas inspected and discussed in detail the inspection results listed above. No dissenting comments were received from the licensee.
Proprietary information is not contained in this report.