05000302/LER-1981-040-03, /03L-0:on 810627,during Power Escalation Following Reactor Startup,Quadrant Power Tilt Exceeded Tech Spec Steady State Limit.Cause Attributed to Xenon Transient Following Earlier Reactor Trip & Plant Startup

/03L-0:on 810627,during Power Escalation Following Reactor Startup,Quadrant Power Tilt Exceeded Tech Spec Steady State Limit.Cause Attributed to Xenon Transient Following Earlier Reactor Trip & Plant Startup

ML20009F745
Person / Time
Site:	Crystal River
Issue date:	07/20/1981
From:	Hernandez V FLORIDA POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20009F742	List: 05000302/LER-1981-040, Forwards LER 81-040/03L-0 05000302/LER-1981-040-03, /03L-0:on 810627,during Power Escalation Following Reactor Startup,Quadrant Power Tilt Exceeded Tech Spec Steady State Limit.Cause Attributed to Xenon Transient Following Earlier Reactor Trip & Plant Startup
References
LER-81-040-03L, LER-81-40-3L, NUDOCS 8107310494
Download: ML20009F745 (2)

LER-1981-040, /03L-0:on 810627,during Power Escalation Following Reactor Startup,Quadrant Power Tilt Exceeded Tech Spec Steady State Limit.Cause Attributed to Xenon Transient Following Earlier Reactor Trip & Plant Startup

Event date:
Report date:
3021981040R03 - NRC Website

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60 61 DOCnET NUMBER 68 69 EVENT DATE 74 75 CEPORT DATE 80 EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h lo l2l IAt 1600 during power escalation af ter Reactor startup. it was determined that the quadrartt l o l a 1 l Power tilt exceeded the steady state limit of T.S. 3.2.4 for the time period 1600 to 161(3

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SUPPLEMENTARY INFORMATION Report No.:

50-302/81-040/03L-0 Facility:

Crystal River Unit 3 Report Date:

July 20,1981 Occurrence Date:

June 27, 1981 Identification of Occurrence:

The quadrant power tilt exceeded the steady state limit contrary to Technical Specification 3.2.4 Conditions Prior to Oce:.rrence:

Mode 1 power operation (30%)

Description of Occurrence:

At 1600 during power escallation, after Reactor startup, it was determined that the quadrant power tilt exceeded the steady state limit. The event was self correcting and the quadrant power tilt was within the steady state limit at 1616.

Designation of Apparent Cause:

The cause of this event is attri6uted te a Xenon transient following a Reactor trip earlier in the day,snd the transient caused by plant startup.

Analysis of Occurrence:

There was no tifect upon the health or safety of the general public.

Corrective Action

j No corrective action was required to restore the quadrant power tilt to within the steadv state limit.

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Failure Data:

This was the fourth time the quadrant power tilt exceeded the steady l

state limit and this is the fifth event reported under this Specifica-tien.

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