ML20051R353

Updated LER 82-011/03X-1:on 820223,steam Generator Pressure Indicator PI-1023A Read High.Caused by Mechanically Binding Force Resulting in Calibr Problem.Force Motor on Pressure Transmitter PT-1023A Replaced

ML20051R353
Person / Time
Site:	Calvert Cliffs
Issue date:	05/07/1982
From:	Basso L, Lagiewski J BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20051R329	List: ML20051R301 ML20051R353
References
LER-82-011-03X, LER-82-11-3X, NUDOCS 8205170451
Download: ML20051R353 (1)

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NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION (7 77)

LICENSEE EVENT REPORT UPDATE REPORT Previous Report Date: 3-25-82 CONTROL BLOCCO l 1

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(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

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8 9 UCENSEE CODE 14 lb LICENSE NUMBER 25 26 LICENSE TYPE JO 101il "

s$"C l60Ll@l 610l 5 l 0lOOCK 0 ETl NUVB 0 l E3R l ll 8 @l 069l 212 l 3 l 8 l 2 l@l 075 l 5 REPORT l0l7 l 8 l 280l@

7 8 68 EVENT DATE 14 DATE EVENT DESCRIPTION AND PROSABLE CONSEQUENCES h lo l2l l At 2300, during surveillance testing, found Stecm Generator (SG) pres- l

[o l3 l l sure indicator PI-1023A reading high (T.S. 3.3.1.1., 3.3.2.1) PT-1023A l i o L4j l was recalibrated and returned to service at 0500, 2-24-82. At 0920, l_

l O 13 l l 3-12-82 RPS trip units for low SG pressure and thermal margin / low pres- l O s l sure were bypassed and ESFAS channel ZD placed 0.0.S. to recalibrate l a gl PT-1023A. All instruments were returned to service at 1435. The 3 redun- l gi dant channels remained operable during this event. Similar events: cone. l 7 8 9 80 C DE CODE S BC DE COMPONENT CODE SUBCODE SU ODE lO19l 8

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

• .,EVENTYEAR REPORT NO. CODE TYPE NO.

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35 lZlh 36 l0l0l0l0l 3/ 40 gg 4l l Ylg l Alg [ F l1 l2 l0 lg 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS li j o] ] On 4-12-82, pressure transmitter PT-1023A (Fischer & Porter #50EP1031B- l i i l NS) was replaced. A mechanically binding force motor was causing the l

, 7 l calibration problem. (See LER 50-318/82-20). Replaced force motor. Re- l i 3 l paired PT will be used as a spare. No further action taken as this is l li l4 l l the first such failure and channel checks are performed each shift. l 7 8 9 80 ST S  % POWER OTHER STATUS IS O RY DISCOVERY DESCRIPTION W J@ l 0 l 0 l 0 l@l NA l lBl@l Surveillance Test l A TIVITY CO TENT RELEASED OF RELE ASE AMOUNT OF ACTIVITY LOCATION OF RELEASE i

l1' I6I(_Zjh W @l NA l l NA l PERSONNEL EXPOS ES NUVBE R TYPE DESCRIPTION NA i 7 10 l 0 l0 l@l Z l@l l PERSONNE t iN;UWiES u 80 NuveER DESCRiPTiONh i a 7 8 9 l n l o l o11l@l12 NA l 80 LOSS TYPE OF OR DAMA' c TO FACILITY Q DESCRIPTION V i o NA LZ_l@l l 7 8 9 10 80 a o ISSUE @[ DESCRIPTION NA l lllllllllllll{

$2d$17(Ohne,AnEn a.S. tagwsun.P. Basso ,noy,, $0swm "{

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