:
CUM DENTAL
THE INTERNATIONAL NUCLEAR EVENT SCALE (INES)
EVENT RATING FORM (ERF)
to be sent to:IAEA, WAGRAMERSTRASSE 5, P.0.BOX 100,A-100 VIENNA, AUSTRIA
43 1 2309723, TELEX: 1-12645, CABLE: INATOM VIENNA, FACSIMILE:
EVENT TITLE
TELEPHONE: 43 1 2360 2685
LEAK OF LOW-ACTIVITY WATER FROM A TANK IN THE
THE NON-ATTENDED UNIT ROOM
EVENT DATE
12.09.92
RATING
RATING
OUT BELOW ON SCALE
SAFETY Degr. defence
provi- sional final
DATE
OF SCA SCALE LE
0 1 2 3 4 5 6 7 ATTRI-On-site
in-depth | X impact
20.10.92
X
Country
RUSSIA
Facility KOLA-3
name
BUTE Off-site impact
VVER
440 MWe
ASPECTS' OF SIGNIFICANCE TO THE PUBLIC:
Facility
type
YES NO
ACCIDENT
INCIDENT
DEVIATION
RADIOACTIVE RELEASES OFF-SITE RADIOACTIVE RELEASES ON-SITE . WORKERS INJURED BY RADIATION
WORKERS INJURED PHYSICALLY
PLANT SAFETY IS UNDER CONTROL
THE EVENT REPORTED IS A DISCOVERY OF A DEFICIENCY BY ROUTINE SURVEILLANCE
A PRESS RELEASE WAS MADE (IF YES, PLEASE ATTACH IT)
SHORT DESCRIPTION OF THE EVENT:
of 430
in Unit
1.
B
Unit 3 was at the minimum controlled power level and Unit 4 was at the power
MWe. The event is
to related equipment located
3
area controlled
and which is periodically involved in the process. As a result of leak from the "dirty" condensate tank (specific activity: 2x10(-5) Ci/1) into some working 400 m3 of condensate via penetrations got
area the controlled
causing
situation radiation zooms of deterioration with doserates up to 3
and superficial beta-activity up
5x10(3) beta-particles/cm2.min which exceeds the NRE-76/87 Code standard for controlled area (the limit is 2x10(3) beta-particles/cm2.min). Small amount of water (3-5 m3) also got into the attended have been
to
mcR/s
taken to decontaminate the
IOOMS
corridors. Actions affected locations.
Reactor safety system activation was not required. Activity releases to
environment
personnel overexposures did not-
and
Occur.
Contact person
Name
Yuri K. ZHUK (VNIIAES)
for further
Address
information
Phone Fax
Ferganskaya 25, 109507 Moscow, Russia (095) 376 12 37
(095) 274 00 71
* Please, attach additional information on justification of the
event rating and difficulties encountered, if needed
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