ML20107L573
| ML20107L573 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 10/05/1984 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML20107L560 | List: |
| References | |
| NUDOCS 8411130569 | |
| Download: ML20107L573 (3) | |
Text
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_,t-TENNESSEE (jggy UTHORITY CH ATTANhM %NESSE 1
400 Chestnut Street Tower II 84 0CTI2 ag: 3g October 5, 1984 U.S. Nuclear Regulatory Commission Region II ATTN: James P. O'Reilly, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323
Dear Mr. O'Reilly:
Enclosed is our response to D. M. Verrelli's September 10, 1984 letter to H. G. Parris transmitting Inspection Report Nos. 50-259/84-33,
-260/84-33, -296/84-33 regarding activities at our Browns Ferry Nuclear Plant which appeared to have been in violation of NRC regulations. We have enclosed our response to the Notice of Violation. If you have any questions, please call Jim Domer at FTS 858-2725.
To the best of my knowledge, I declare the statements contained herein are complete and true.
Very truly yours, TENNESSEE VALLEY AUTHORITY L. M. Mills, Manager Nuclear Licensing Enclosure 3411130569 841018 PDR ADOCK 05000259 G
PDR An Equal Opportunity Employer L.
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RESPONSE
NRC INSPECTION REPORT NOS.
50-259/84-33, 50-260/84-33, AND 50-296/84-33 (Violation 259/260/296/84-33-01)
Technical Specification 6.3. A.1 requires that detailed written procedures, including applicable checkoff lists, for the normal startup, operation, and shutdown of the reactor and of all systems and components involving nuclear safety of the facility be prepared, approved, and adhered to.
Contrary to the above, this requirement was not met in that residual heat removal (RHR) heat exchanger "B" outlet valve 2-74-33 was found not locked as required by Operating Instruction (OI) 74.
A followup audit conducted by the licensee found the following valves not looked as required by plant operating instructions.
Yalve Unlocked Reauired by 2-67-603 RHR B Seal Heat Exchanger Throttling Valve OI-67 1-74-722 Suppression Pool Drain OI-74 2-74-22 Heat Exchanger C Outlet OI-74 2-74-575A Heat Exchanger A Shell Drain OI-74 2-769 Condensate Storage Tank 4 Outlet OI-2 2-770 Condensate Storage Tank 5 Outlet OI-2 2-766 Condensate Storage Tank 4 & 5 Tie Into Unit 3 OI-2 1-32-305B Air Compressor B Vent Bypass to Air. Compressor OI-32/32A 1-32-2520 B Suction Isolation Valve to Containment X-50 OI-32/32A This is a Severity Level V violation (Supplement I) applicable to units 1 and 2.
1.
Admission or Denial of the A11ened Violation TVA admits to the violation as stated.
2.
Reasons for the Violations if Admitted The reason for the violation is unknown, but the valves are believed to have either been inadvertently left unlocked or the ' locks were broken off the valve after having been in place.
3 Corrective Stans Which Have Been Taken and Results Achieved All systems with looked valves were checked. Each shift engineer held group meetings and discussed requirements for locked valves.
Requirements for maintaining looked valves are being discussed in assistant unit operator retraining classes. Full coupliance was
. achieved when all locked valves were verified to be locked, m
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Corrective Steos Which Will Be Taken to Avoid Further Violations (or Findings)
Locked valve checks will be performed quarterly to prevent this from happening again.
5.
Date When Full Comoliance Will Be Achieved The first quarterly check will be complete by December 31, 1984.
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