ML19257D844

LER 79-081/03L-0:on 791225,containment Air Particulate & Gaseous Radiation Monitor Pump Tripped Off Due to Low Air Flow.Cause Undetermined.Air Flows Realigned & Readjusted. Operating Instructions Being Modified

ML19257D844
Person / Time
Site:	Calvert Cliffs
Issue date:	01/25/1980
From:	Davis S, Rizzo P BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19257D843	List: ML19257D842 ML19257D844
References
LER-79-081-03L, LER-79-81-3L, NUDOCS 8002060598
Download: ML19257D844 (2)

Text

NRC FORM ,J66 U. S. NUCLEAR REGULATORY COMMISSION (170

• LICENSEE EVENT REPORT CoNTRotStoCo l l 1 I I l@ (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI to 7

i

& 9 iM! lciclNl1l@lOlOl-lOlOlOlOlOl lOlOl@l4l1l1lllll@ L Lj LICENSEE CODE 14 15 LICENSE NUV8ER 25 26 LICENSE TYPE JO 3

.AT 68 CCN'T o i 7 8 Eu"RU 60 l Ll@l 61 01 SDOCKETl 01010131 NUM.ER

'l l 6871@l 69 1 lEVENT 2121517191@l DAT's 74 75Ol 1 l 2l Sl 8 l O80 l@

REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o 2 i At 0800 the contaiment air particulate and gaseous radiation monitor pump l RTT'l I tripped off due to low airflow. The air particulate monitor was bypassed I o 4 I and isolated in accordanCe with T.S. 3.4.6.1 in order to crovide adecuate l Io s l airflow to the caseous monitor. The air carticulate monitor was returned I o s l to service at 1410 on 12/26/79. The contaiment sumo level alarm and caseous I o 7 l monitor remained ocerable durino the event. This is not a recetitive occur- I o a i renc e. I 7 8 9 80 0E OE SU8C E COMPONENT CODE SUSCODE 5 E 7

o 9 8 9 I Mi cl@ l xl@ l x i@ II NISlTlRlul@ lxl@ Zl@

10 11 12 13 18 19 20

,,., SEOUENTIAL OCCURRENCE REPORT REVISION LER EVENT YEAR R EPCRT NO. COOE TYPE NO.

@ ,ag/RG 17 9 22

[ ,J 23 1018l1l 24 26 y27 l013 l 28 29 y

30

[,-.-j j0 l 32

_ 21 31 N ACT ON ON P T HOURS S8 i PCR B. SPLE MA UP C RER lZ,J@lGl@ lZl@ lZl@ 37 010l0101 LYj@

41 lNl@ lAl@ W l1 l 2 0l@

3J 34 35 36 40 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i o l SEE ATTACHE 0 SHEET. _

l I

lJUJl i 2 I i a i l i 4 I I 7 8 9 80

$A  % POWER OTHER STATUS 01 Q RY DISCOVERY DESCRIPTION i s l El @ l0l 5l0l@ l NA I l A l@l Operatar Observation 'l ACTIVITY CO TENT AMOUNT OP ACTIVITY LOCATION OP RELEASE 1 6 l Zl mELEASE@D OP RELEASE NA lZl@l I l NA i 7 8 9 10 tt 44 45 80 PERSONNEL EXPOSURES Nuv8ER TYPE OESCRIPTION - '

1 7 l0 OlOl@lZl@l NA I92S b32 l PERSONNE L INJURIES Nuv8Ea- cEScRiPTiON@

i 7

s d 9 Ll 01 Ol@l12 11 NA 80 l

Tv E DESCR PT ON LLL9J 7 8 9 l Zi@l10 NA J80 W.sj LN_l@l IS3U E D CE CRiPTION

[ (l (} [ Q ] Q NA l lIl1fI llIll l; S 9 to 68 69 do I

'J A *.t E C C

• R E

• A R E q . . aV4S/D. n 04*** PHONE 0T1230-7Cd N7Ccc 2

LER NO. 79-81/3L DOCKET NO. 50-317 EVEfiT DATE 1 2/25/79 REPORT DATE 01/ 25/80 ATTACHMENT CAUSE DESCRIPTION AND CORRECTIVE ACTIONS: (CONTINUED)

The initial cause of loss of flow was undetermined. Flow may decrease over time due to wear of sampler pJmp vanes or may Change due to systen lineups . Operators bypassed the particulate sampler to increase flow due to unfamiliarity with valve functions and sample skid component operation. Technicians were able to realign and adjust flows the following day.

To prevent recurrence, sample skid valves will be labled for identification and Operating Instructions are being modified to facilitate valve Lineup changes for contairment sampler components.

O 1928 033