ML18094A091
| ML18094A091 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 08/12/1988 |
| From: | NRC OFFICE OF SPECIAL PROJECTS |
| To: | |
| Shared Package | |
| ML18033A320 | List: |
| References | |
| NUDOCS 8808190276 | |
| Download: ML18094A091 (3) | |
Text
gy,R IlEQy,
~ (4 0
0 t
UNITEDSTATES NUCLEAR REGULATORY COMMISSION WASHINGTON, O. C. 20555 ENCLOSURE 1
SAFETY EVALUATION BY THE OFFICE OF SPECIAL PROJECTS SUPPORTING BROMNS FERRY UNIT 2 RESTART EFFORTS ITEM NO. 6.0 RADIOLOGICAL CONTROL AND CHEMISTRY IMPROVEMENT TENNESSEE VALLEY AUTHORITY DOCKET NO. 50-260
1.0 INTRODUCTION
In Section II.2.6 of Volume 3 of the Nuclear Performance
- Plan, TVA identified the restart corrective actions for the Radiological Control and Chemistry Improvement Program.
Following is a staff evaluation of the plan.
2.0 EVALUATION
- 2. 1 Radiological Control The Systematic Assessment of Licensing Performance (SALP) evaluated in 1985 (Ref. 4.1) noted previous improvements made in the Browns Ferry Nuclear Plant (BFN) Radiological Control (RC) program.
However, the program was criticized for over-reliance on contract technical personnel.
In response to these
- concerns, TVA completed the following improvements:
o Since 1985, the number of ANSI 18.1 qualified technicians employed by TVA in BFN RC section increased from 21 to 97.
o BFN RC has 6 qualified dosimetry technicians and 9 trainees.
A minimum of 3 full-time TVA professional management personnel are assigned to oversee RC technician training for all trainees.
o To provide on-shift guidance to RC technicians and trainees, a
minimum of one, and usually two or more RC supervisors, are onsite 7 days a week, 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> a day.
Contracts have been extended to ensure that experienced, well-qualified contract RC personnel continue to be available while TVA technicians acquire work experience.
To help minimize personnel
- turnover, the salaries of RC technicians and supervisors have been adjusted.
o The BFN RC professional management staff has been strengthened considerably with the addition of a Radiological Health Supervisor, a Technical Supervisor, and an As-Low-As-Reasonably-Achievable (ALARA) engineer.
3303i90276 330812 PDR ADOCK 05000260 P
Post Accident Sampling System (PASS) capability was developed by BFN as a
response to post TMI NUREG-0737 requirements (Section II.B.3).
This interim capability was evaluated fn 1986 by NRC and determined to be adequate, for Unit 2 restart pendina resolution of two inspector folio~
~p items (Ref. 4.2).
TVA stated that the first follow-up item, need to retrafnlaboratory personnel on PASS procedures, has been completed.
The second item, need to evaluate the interim PASS under full power operating conoftions against NUREG-0737 criteria, will be accomplfshed after Unit 2 achieves full power.
A permanent PASS system will be installed before restart of t:nits 1 and 3 and during the next (cycle 6) refueling outage for Unit 2.
2.2 Chemistry Improvement Plan The Systematic Assessment of Licensee Performance (Ref. 4.1) noted that "Hanagement involvement and support were evident in the radfoloaical protection area.
Performance associated with the chemistry control program,
- however, was not as aggressive as that demonstrated in the radiological protection program."
As a response to NRC contents as well as internal TVA inspections and
- audits, BFN management initiated the Chemistry Improvement Plan (CIP) to correct programaatic deficiencies.
The root cause of the deficiencies was determined to be lack of management attention and responses to correct the identified problems.
BFN management recognized that emphasis fn the area of staffina, training, and facility improvement were critical to the overall success of the program.
The followinc twelve areas of improvement were established by categorizina the audit findings and inspections.
1.
Staffing 2.
Training 3.
Facility improvement 4.
gA/gC 5.
Representative sample of the bulk stream 6.
Complete revision and verification of all chemistry procedures 7.
Instrument uparade S.'vstem chemistry improvement 9.
Environment monitoring and control improvement
- 10. Data management ll. Chemical traffic control
- 12. Bulk chemical control Additionally, BFN initiated the followina improvements fn laboratory practice:
l.
Added requirements for supervisory review and prompt corrective action in case of degraded quality.
Continuous review of all laboratory Cata and instrumentation is performed by the shift supervisor with frequent review by the coanizant enaineer.
2.
As for standard sources used for data radiation efficiency calibration, data counting is no longer performed on the proportional counter.
The
'alpha radiation measurement efficiency calibration procedures have been enhanced.
BFN also introduced programs to reduce liquid and solid radwaste.
In an effort to reduce the overall volume of solid radioactive waste, actions will be taken to minimize radwaste generation, and once generated, apply effective volume reduction techniques.
To minimize generation, control over materials entering the regulated area will be strengthened through monitoring efforts and increased general employee awareness.
Radwaste reduction techniques such as trash segregation and compaction will be emphasized and reevaluated to pinpoint areas of improvement.
One major area for improvement relative to compaction is the anti-springback device system.
In an effort to reduce the overall liquid volume processed, a Radwaste Inleakage Reduction Program has been established and a dedicated engineer has been assigned to review inputs to Radwaste.
To date this program has focused more emphasis on the Floor Drain Svstem due to the high resin usage on the floor drain, filter.
More emphasis will be focused on the equipment drain system as reductions in floor drain inleakage progress.
The Floor Drain System has shown a steady decrease in floor drain inleakage since November 1985.
3.0 CONCLUSION
Improvements discussed above included management involvement in the program, increasing in staffing and training as well as salary and facility improve-
- ments, implementation of NUREG-0737 requirements and a program to reduce liquid and solid radwaste by introducing the anti-springback device.
.These positive actions strengthen the radiological and chemistry control because of more management involvement, a better working environment and specific actions taken that affect the quality of the controls.
Therefore, the staff concludes that TVA's improvement measures are sufficient to support pRnt restart.
4.0 REFERENCE 4.1 Enclosure 1 to the letter from William J. Dirks of NRC to Charles Dean of TVA dated September 17, 1985.
4.2 NRC Inspection Report 50-260/86-18, January 16, 1986.
Principal Contributor:
Sang Bo KIm D"te4:
August 12, 1988