ML20196L055
| ML20196L055 | |
| Person / Time | |
|---|---|
| Site: | River Bend  |
| Issue date: | 07/06/1999 |
| From: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | |
| Shared Package | |
| ML20196L054 | List: |
| References | |
| 50-458-99-03, 50-458-99-3, NUDOCS 9907120283 | |
| Download: ML20196L055 (2) | |
See also: IR 05000458/1999003
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violatien of TS h3.7.1. This Severity Level IV violation is being treated as an NCV,
consistent with Appendix C of the NRC Enforcement Policy. The violation is in the
licensee's corrective action program as Condition Report (CR) 99-0239 (NCV 50-
458/9903-01).
c.
Conclusions
The licensee identified a TS 3.7.1 violation, in that the Division lil SSW pump was
inoperable for more than 30 days. Inadequate refurbishment caused the breaker failure.
During the investigation, the licensee also identified that operators had failed to
implement procedural requirements to check the pump breaker weekly.
04
Operator Knowledge and Performance
04.1 Refuelina Activities
Lnspection Scope (71707)
a.
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The inspector monitored refueling activities.
b.
Observations and Findinas
The inspector noted two significant refueling activity problems.
Over Extension of Refueling Mast: A refueling operator inadvertently overextended
the refueling bridge mast and drove a new fuel bundle into the top core guide plate.
bending the fuel bundle handle. The bent handle was discovered when refue!ing floor
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operators found that they could not decouple the bundle into the core. The bundle was
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returned to the IFTS and returned to the spent fuel pool.
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The refueling bridge operator believed that the spotter instructed him to extend the
grapple to the 530 inch position, but the spotter recalled providing the instruction to
move to the 350 inch position. Both operators stated that three-way communications
were utilized. While the correct depth was written on the refueling mast in front of the
operator, he did not review the information prior to extending the grapple. After
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providing the instruction to the refuel bridge operator, the spotter did not continue to
follow the mast movement, which was contrary to his position requirements. Further,
although the senior reactor operator dedicated to supervise the operation was on the
bridge, he was not closely observing the activities. Since the core guide plate was
actually at the 372 inch level,22 inches from the required stop position, the SRO and
spotter missed the opportunity to stop the operator's action prior to the damage. The
bridge operator also stated that this was his first refueling outage as a bridge operator.
Procedure REP-0029, " Fuel Movement," Revision 7, states "the refuel SRO is
responsible for . . directly supervising the fuel handler (and] spotter . . on the refuel
platform. This activity includes enforcing the roles and responsibilities of each
member . " Contrary to REP-0029, the refueling senior reactor operator provided
9907120283 990706
ADOCK 05000458
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Opened and Closed
50-458/9903-01
Inadequate maintenance causes Division ill SSW
pump breaker failure.
50-458/9903-02-
Two failure to follow refueling procedures
examples.
50-458/9903-04
Failure to follow clearance order procedures results
in engineered safety features actuation.
50-458/9903-05
Inadequate procedure causes auto-start of SSW
pumps, and engineered safety features actuation.
50-458/9903-06
' Scaffold inadequately erected two times.
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50-458/9903-07
Inadequate engineering evaluation of RHR heat
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exchanger fouling rate.
50-458/9903-08
Inattentive guard in violation of security
procedures.
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