05000220/LER-1981-031-03, /03L-0:on 810704,during Startup W/Reactor at Low Pressure,Emergency Condenser Loop 11 Was Removed from Svc Because of Water Hammer.Caused by Inadequate Draining of Emergency Condenser Sys.Loop Cooled Down & Isolated

From kanterella
(Redirected from ML20010A470)
Jump to navigation Jump to search
/03L-0:on 810704,during Startup W/Reactor at Low Pressure,Emergency Condenser Loop 11 Was Removed from Svc Because of Water Hammer.Caused by Inadequate Draining of Emergency Condenser Sys.Loop Cooled Down & Isolated
ML20010A470
Person / Time
Site: Nine Mile Point 
Issue date: 08/03/1981
From: Neild R
NIAGARA MOHAWK POWER CORP.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20010A466 List:
References
LER-81-031-03L, LER-81-31-3L, NUDOCS 8108110455
Download: ML20010A470 (1)


LER-1981-031, /03L-0:on 810704,during Startup W/Reactor at Low Pressure,Emergency Condenser Loop 11 Was Removed from Svc Because of Water Hammer.Caused by Inadequate Draining of Emergency Condenser Sys.Loop Cooled Down & Isolated
Event date:
Report date:
2201981031R03 - NRC Website

text

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

LICENSEE EVENT REPORT CONTROL BLOCK: l l

l l

l l

l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6

10lilIulv!niMlPlfl@l010]__-l0101Ol01Ol-lOlOl@l4l1l1l1l7l@l l@

7 8 9 LICENSEE CODE 14 15 L.J4NSE NUMBER 25 26 LICENSE TYPE 40 57 CAT 58 CON'T IOIi1

$ou,E I ll@l 01 51 01 01 01 21 21 Ol @ l 01 71 ol 41 Al fl@l o l R I o l 4 I R I 7 l@

1 8

60 61 DOCKET NUMBER 68 69 EVENT DATE 14 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSECUENCES Oio

0l2l l Witife Mode steitcli tats in Startup and Reactor mas at tote pressure tite Emergency l

lo l3 l l Condertsor L'oop H11 tats removed from. service because of a teater Itammer.

l 10141 l I

10151 l l

l 016 I l I

10171 1 1

10181I I

80 7

8 9 Su'sC die SEE:$E

  • E's"

"^Ede' SEs#E$oE C

CouPONENT COoE ITI91 l Sl Fl@ l_fj@ [f_j@ l Hl Tl El Xl Cl HI@ l_pj@ l_Zj @

7 8

9 10 11 12 13 18 19 20 SEOUENTIAL OCCURRENCE REPORT REVISION LER RO EVENT YEAR R EPORT NO.

CODE TYPE N O.

O an g isIil 1-1 1 01 31 11 1/l I 01 31 lLl I-l 10 1 su

_ 21 22 23 24 26 27 N

N 30 31 32 T K N 'AC ON ONP NT ME HOURS SB i PO 8.

SUPPL 1 R MANUFACTURER lxi@lZI@

l 21@

21@

l01010101 I NI@

lu l@

Itl@

lFli1715_j@

33 34 35 av 31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS p uo t t n ~ol 11 l 01 l The owo of this event is tb o ~ o ud t n l Un in Rtonm T t!* r o Po t o rf Pow ~ o o o to ~

w l and no condentsor vacuum causing inadeouate draistina of $11 Emeraencer Condenson Sers-l l,,2\\ l ten. The action taken bit tite SSS teas to isotate #11 E.C. Loop.

The 2000 cooled dotenl m l and aus restored.to senvice about 11 hours1.273148e-4 days <br />0.00306 hours <br />1.818783e-5 weeks <br />4.1855e-6 months <br /> later, Future action is beina inves ti-l l pated to chanae procydunes tchen the MSIV's ane closed and neactor is (SEE OVER) l l1 l4l 7

e s 80 l

'STjtY

^C Tu sPOwER OTHER STATUS 01S RY DISCOVERY DESCRIPTION liisI (_C_j @ l0 l 0 l i l @ l VA l

l A l@l OPERATOR OBSERVATION l

AMOUNTOF ACTIVITY @ I '

LOCATION OF RELEASE @

ACTIVITY CO TENT RELEASED OF RELEASE li is I LIJ @ LI.J@l I

v4 "A

7 8 9 to 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE

DESCRIPTION

l i l 7 l l o f o l o @M@l I

v4 i

l PERSO~~EtIN;ubS oESCRiPTiON@

i NUM.ER 1

lilalinlniol@l 94 7

8 9 11 12 80 LOSS OF OR DAMAGE TO FACILtTV TY'E

DESCRIPTION

I lusJ L2J@l v4 Pusu$TY 8108110455 810803 ISSUED @ DESCRIPTION h NRC USE ONLY PDR ADOCK 05000220 s

eDR i

Iiiiiiiii!ii1:,

yl L22_LO_j O

e, 7

8 9 10 68 69 80 3 Richard Neitd (MM M21% MM g

NAME OF PREPARER pgagg 4

-.--,.~