ML20113F749
| ML20113F749 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 01/17/1985 |
| From: | Wallace P TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF ADMINISTRATION (ADM) |
| References | |
| 84-09, 84-9, NUDOCS 8501240123 | |
| Download: ML20113F749 (3) | |
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Q TENNESSEE VALLEY AUTHORITY Sequoyah Nuclear Plant Post Office Box 2000 Soddy Daisy, Tennessee. 37379 January 17, 1985 U.S. Nuclear Regulatory Commission Document Control Desk
. Washington, DC 20555~
Gentlemen:
TENNESSEE VALLEY AUTHORITY - SEQUOYAH NUCLEAR' PLANT UNIT 1 -' DOCKET NO.
50-327 - FACILITY OPERATING LICENSE DPR SPECIAL REPORT 84-09 The enclosed special report provides details. concerning the failure to perform a surveillance instruction.within the allotted time. This event
' is reported in accordance with Sequoyah Unit 1 Technical Specifications 3.7.11.2 and 6.9.2.
Very truly yours, TENNESSEE VALLEY AUTHORITY Aw P. R. Wallace Plant Manager Enclosure cc (Enclosure):
J James P. O'Reilly, Director U.S. Nuclear Regulatory Commission Suite 2900 101 Marietta Street, NW Atlanta, Georgia 30323 Records Center Institute of Nuclear Power Operations Suite.1500
.1100 circle 75 Parkway Atlanta, Georgia 30339 NRC Inspector, NUC PR, Sequoyah 8501240123 850117 PDR ADOCK 05000327 PDR S
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1983-TVA 50TH ANNIVERSARY 3
' An Equal Opportunity Employer I
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- p SEQUOYAH NUCLEAR PLAh7 SPECIAL REPORT 84-09 UNITS 1 AND 2 b '
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' Event' Description
'A review of previous. performances 'of Surveillance Instruction (SI) 241,
" Visual Inspection of Spray and/or Sprinkler. System Spray Headers, Nozzles,
.and Nozzle Spray Area", was performed on December 18, 1984. This was in conjunction with a'special performance of this instruction to address 10_CFR 50, Appendix R related sprinkler system deficiencies. As a result of.this review, it was' discovered that the last complete scheduled performance of this instruction, which implements Technical Specification Surveillance ' Requirements 4.7.11.2.c.2 and 4.7.11.2.c.8 for both units 1
-and'2, was last completed on December 28, 1982. The 18 month performance
~ frequency (plus allowable extension) for these Technical Specifications surveillance requirements was exceeded by approximately 45 days.
LCause-The cause of this event was a failure to issue a Surveillance Instruction 4 performance package for routine performance when due. A conditional refueling outage performance-of this SI was. issued and performed during the unit 1,
. cycle 2 refueling outage in March 1984. The only areas inspected at that time were the reactor coolant. pump spray headers inside unit 1 containment.
- Following performance as intended, the instruction package was returned to Plant Services. The Plant Services staff assumed the SI work package was
'a complete performance.- On this assumption, the next routine performance
- was scheduled for September 1985, eliminating any issue of a routine per-formance' package when due.in June 1984. A list of all 18 month and refueling outage: frequency sis for unit 0, units 1 and 2, and unit 2 was sent to each responsible section for' potential SI scheduling prior to the unit 2,. cycle 2 refueling outage., SI-241'was not scheduled by'the responsible section in' response to.this list.
t Corrective Iction -
Areas provided,with automatic' sprinkler systems, which contain redundant' systems or components which could be damaged,1were inspected during the previously mentioned special' performance.of SI-241. The provision of
' continuous firewatch coverage, according.to Technical Specification Action Statement 3.7.11.2.a.:was'therefore not applicable. ~ For other areas where S
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~ Lthe involved surveillance requirement has not been performed, the automatic
- sprinkler system protection was declared ~ inoperable... For these areas, it was verified.that previously established hourly firewatch coverage was 1
sin compliance with the required action statement, and that backup fire suppression equipment.was operable.
At ~1 east 70 percent of-the sprinkler and spray.' system headers, nozzles, and 1 sprinkler heads have been inspected on the previously referenced special'
' performance of SI-241..The' remainder which require inspection will be
' inspected, according to,the applicable surveillance requirement, by January, 25,~1985.
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-2 SEQUOYAH NUCLEAR PLANT-SPECIAL REPORT 84-09 UNITS 1 AND 2 To prevent an occurrence of this type in the future,-all special performances and refueling outage performances of surveillance instructions will state if this SI performance was a complete performance of the SI, and if this performance date is to be used to schedule the next performance.
SI-241 has been split into three separate, independently scheduled sis. One is for inside unit 1 containment, one is for inside unit 2 containment, and one is for outside the containment buildings.
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