ML19296B363

LER 80-004/03L-0:on 800118,discovered That Loop a Steam Flow Transmitter Had Drifted Out of Spec.Caused by Failure of Differential Pressure Unit in Barton Flow Transmitter Model 384.Pressure Unit Replaced,Transmitter Recalibr

ML19296B363
Person / Time
Site:	Prairie Island
Issue date:	02/15/1980
From:	Hunstad A NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19296B361	List: ML19296B360 ML19296B363
References
LER-80-004-03L, LER-80-4-3L, NUDOCS 8002200467
Download: ML19296B363 (1)

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74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o 2 l Main s te m flow tr,nn-it tor FT-465 u,c fnnna en hwn Arirend c i , r. h that reactor trip o 3 l input and steam line isolation input from this channel would have occurred outside 1 o 4 l Tech Spec limits. Tech Specs 2.3.A.3.c and Table 3.5-1 apply. No effect on oublic j o 13 l l health and safety since redundant instruments were all operable. I o s l l jOl7l l 0 8 l 7 8 9 80 SYSTEM CAUSE CAUSE COVP. VALVE CODE CODE SUSCODE COMP 0NENT CODE SUSCODE SU8 CODE g l Il A]h yh l Elh lIl Nl S l Tl Rl Ulh Wh Wh 7 8 9 10 11 12 13 18 19 20

_ SEQUENTI AL OCCURRENCE REPORT REVISION LE R,RO JVENT YE AR R EPORT NO. CODE TYPE N O.

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42 W@ lIl21014lh 4J 44 47 CAUSE OESCRIPTION AND CORRECTIVE ACTIONS h l i l o l l Failure of the dif ferentini nressurn unir in , n,renn unan1 uA Flow Transmitter. I li lil Differential pressure unit was replaced and transmitter recalibrated.

I 2 l 1 i a l I i 4 I l 7 8 9 80 ST S  % POWE R OTHER STATUS O S OV RY DISCOVERY DESCRIPTION l1 I 5 l [E j@ l 1 l 0 l 0 l@l NA l W @l Operator observation l ACTivlTY CO TENT AMOUNT OF ACTIVITY LOC ATION OF RELE ASE i 6 RELE ASE@D OF RELE ASE@l NA l l NA l 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DE SCRIP TION i 7 l 0 l 0 [0 l@y@l NA l

' ' ' ,E RSO~ d'IN>uL S NUV8t R DESCRIPTION i a NA 8 9 l 0 l 0 l 0 l@l12 l 7 11 80 LOSS TYPE OF OR DAMAGE TO FACILITY Q DESCRIPTION  %./

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. . unStad PHONE:

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