ML18082A002

LER 80-006/01P-0:on 800122,low Flow Alarm Received on Offgas Sampling Sys,Rendering Offgas Radiation Monitors 17-150A & B Inoperable.Cause May Be Related to Flow Blockage in Sample Sys Components.Addl Details to Follow

ML18082A002
Person / Time
Site:	Vermont Yankee
Issue date:	01/23/1980
From:	Conway W VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML18082A001	List: ML18082A000 ML18082A002
References
LER-80-006-01P, LER-80-6-1P, NUDOCS 8001280277
Download: ML18082A002 (2)

Text

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7 8 9 10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION

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\;..:_; REPORT NUMBER I8 I0 I 21 22 l::::J 23 Io Io I 6 I 24 26 27 lo 11 I 28 29 w

30 L=l 31 LQJ 32 ACTION FUTURE EFFECT SHUTDOWN Q ATTACHMENT NPRD-4 PRIME C.OMP. COMPONENT TAKEN ACTION ON PLANT METHOD HOURS ~ SUBMITTED FORM SUB. SUPPLIER MANUFACTURER W@L!..l@ ~@ W I o Io I o Io I L!.J@ L!J@) W@ Iz J 9 I 9 I 9 I@

33 34 35 . 36 37 40 41 42 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 43 44 47

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STATUS  % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION

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EVENT DESCRIPTION AND PROBABLE CONSEQUENCES

• LER 80-6/lP VTVYSl 05000271 At approximately 0830, January 22, 1980, Operations personnel received a low flow alarm on the Off Gas Sampling System. Immediate investigation by cognizant plant personnel determined that a flow disturbance had occurred in the Sampling System rendering both AEOG Radiation Monitors 17-lSOA&B inoperable. This condition was contrary to the requirements of Tech. Spec.

Table 3.2.4. The necessity to perform the action specified in Note 2 of Tech. Spec. Table 3.2.4 was precluded by restoring operation of the AEOG Radiation Monitors 17-lSOA&B within approximately twenty minutes from event initiation. Based upon a review of Off Gas System samples obtained directly following this event, it was concluded that no abnormal activity at the SJAEs occurred and that there were no adverse consequences to the public health or safety as a result of this event. A similar occurrence was re-ported as RO 79-02.

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