ML19341A671

LER 80-038/03L-0:on 801222,during Surveillance Test,One Steam Exclusion Actuation Bistable Tripped Above Tech Spec Limit.Caused by Drift of Foxboro Model 63U-CC-OHDR-F Bistable.Bistable Reinspected & Calibr

ML19341A671
Person / Time
Site:	Prairie Island
Issue date:	01/21/1981
From:	Hunstad A NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19341A659	List: ML19341A658 ML19341A671
References
LER-80-038-031, LER-80-38-31, NUDOCS 8101270658
Download: ML19341A671 (1)

Text

N nc P o R,a n,s - - - - - - - - - - - - - --- - - - -

(7 77)

UCENSEE EVENT REPORT n

U CONTROL BLOCK: l 1

l l l l l lh 6

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) lo Iil 8lM 7 3

!N LICENSEE l P lI lN CODE l 1 l@l 0 l 0 l - l 0 l LICENSE le 15 0 l 0NUMBER l 0 l 0l -l 0 l 0 25l@l 264 l1LICENSE l 1 l 1TYPE l 1JOl@l57 CAT l 68 l@

CON'T I0l1I ""[n"eg o lL @l0l5l010l0l2l8l2 Cl1 68 12 l?

69 l9 I R lo @l0 l1 REPORT EVENT DATE 74 75 l 2l1DATEl 81 1l@ 80 7 8 60 61 DOCKET NUMBER EVENT OESCRIPTION AND PROB ABLE CONSEQUENCES h l o 121 l During surveillance test, one steam exclusion actuation bistable tripped at l 123F, 3F above the 120F limit. Redundant train was operable. No effect on

,,,,,, [

,, ,,,y public health and safet.y. Last similar event was RO 79-22. l 10 I s l I I 10181l i 10171 1 ,

l I

10181l

$I[E C0oE Su8CNE COMPONENT CODE SUSC DE SU E 10191 7 6 l Al Al@ L_rJ@ LfJ@ I r i n! s i r la I "I@ W@ Lz.J @

9 to 11 12 13 18 19 20 SEQUENTIAL CCCURRENCE REPORT REVISION EVENT YE A R R EPORT NO. CODE TYPE N O.

LER

@ ,ag/Ro i a10l l-l I 0131 si I/l 101,I LL_J I-1 L2J

_ 21 22 23 24 26 27 28 29 30 31 32 K N AC C C P NT Wb MOURS S8 IT POR 8. SUPPLIE MANUFACTURER lEl@lZ 33 34 l@ l3SZ l@ W@ l 0 l 0l 010l 36 31 40 l41 Nl@ lYl@ lA l@ l Fl 1l 8l Ol@

42 43 44 47 CAUSE OESCRIPTION AND CORRECTIVE ACTIONS

,,,g, Drift of a Foxboro Model 63U-CC HDR-F bistable. ,

Inspected and Calibrated. Retest was satisfactory. i I

U_L1,) l l

lilai i I

l i 141 1 7 8 9 80 S  % POWER OTHER STATUS IS O RY Of SCOVERY DESCRIPTION I1 l5l d @ l1l0l0l@l NA l lBl@l Surveil 1ance Test l ACTIVITY CO TENT aELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE l l i l 8s 9l W @D OF RELEASE lZl@l NA l l NA l l 4 10 tt 44 45 80 PERSONNEL EXPOSURES f l

NUMBER TYPE DESCRIPTICN NA l l 1 l 7 l l 0 l 0 l 0 l@l Z l@l l

PERSONNEL NJU IES NUMBER oESCRiPriON@

NA i li la 8l l0 7 9 l 0 l0 l@l12 11 80 LOSS OF OR DAMAGE TO FACILITY ,

DESCRIPTION l TYPE NA l l

[TTTId 9l Z I@lto 7

80 l2lal NA ISSUEl @ DESCRIPTION l llllllllllll l1 810 1hkOESS NAME OF PREPARER x 3. aunstaa .-. PHONE:

61i_38_un  ?

3