05000454/LER-1984-002-01, :on 841105,surveillance Requirements Not Performed Re Recording of RHR Train Flow & Operability. Caused by Operator Oversight of Surveillance Requirements & Improper Supervisory Review.Personnel Counseled

:on 841105,surveillance Requirements Not Performed Re Recording of RHR Train Flow & Operability. Caused by Operator Oversight of Surveillance Requirements & Improper Supervisory Review.Personnel Counseled

ML20133F599
Person / Time
Site:	Byron
Issue date:	07/31/1985
From:	Shaw D COMMONWEALTH EDISON CO.
To:
Shared Package
ML20133F558	List: 05000454/LER-1984-001-01, :on 841104,hourly Fire Watch for Penetration Seals Not Performed.Caused by Insufficient Manpower to Adequately Perform Fire Patrols & Supervisor Decision to Leave Patrols Understaffed.Supervisors Counseled 05000454/LER-1984-002-01, :on 841105,surveillance Requirements Not Performed Re Recording of RHR Train Flow & Operability. Caused by Operator Oversight of Surveillance Requirements & Improper Supervisory Review.Personnel Counseled 05000454/LER-1984-007-03, :on 841110,grab Samples Not Obtained Every 12 H While Vent Stack Radiation Monitors Inoperable,Per Tech Spec Limiting Condition for Operation.Cause Not Stated.Personnel Counseled on Importance of Taking Required Samples 05000454/LER-1984-015, :on 841125,gas Grab Sample Not Obtained While Vent Stack Monitor 1RE-PR028 Inoperable,Per Tech Spec Action Statement.Caused by Personnel Error.Control Room Personnel Counseled on Proper Action Statement Requirements ML20133F555
References
LER-84-002-01, LER-84-2-1, NUDOCS 8508080355
Download: ML20133F599 (2)

LER-1984-002, on 841105,surveillance Requirements Not Performed Re Recording of RHR Train Flow & Operability. Caused by Operator Oversight of Surveillance Requirements & Improper Supervisory Review.Personnel Counseled

Event date:
Report date:
4541984002R01 - NRC Website

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On 11/5/84, during the 3:00 PM to 11:00 PM shift, surveillance requirements were not performed to record Residual Heat Removal train flow and operability. This oversight was discovered during shift turnover..

Immediate action was taken to verify the proper flow and operability of the Residual Heat Removal trains. Shift supervisory personnel have been cautioned for proper review of results of surveillances and to instruct personnel under their direction of the necessity for proper completion of surveillances. The required. Residual Heat Removal systems were operable and operating and this incident' posed no threat to the public health and safety.

This revised LER is-submitted to designate the cause code assigned this event.

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BYRON, UNIT 1 0 ]5 ]O ]O l0 l4 ] 5)4 14 4 0 l 0l 2 3l1 0 l2 0F 0l2 van n s.-., m ame w miaw nn While in the Refueling Mode (Mode 6) on 11-5-84, during the 3:00 PM to 11:00 PM shift, surveillance requirements were not performed to record Residual Heat Removal train flow and operability. During the subsequent shift turnover, it was noted that the required surveillance was not performed and immediate corrective action was taken by verifying proper Residual Heat Removal flow and train operability. This incident is a violation of Technical Specification surveillance requirement.4.0.3, failure to perform a surveillance requirement within the specified time interval.

This incident was caused by operator oversight of surveillance requirements and an improper review by Shift Supervisory personnel. Shift Supervisory personnel have been cautioned for proper review of results of surveillances and to instruct personnel under their direction of the necessity to properly complete these surveillances.

There was no damage to plant equipment or release of radioactivity as a result of not performing the surveillance.

At no time did this event pose a threat to the public health or safety.

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