28 August
The meetings of the four Working Groups continued through Wednesday, 27th, and Thursday 28 August. Delegates had posed nearly one thousand questions in writing during the earlier part of the week and these had been consolidated by a dozen experts to produce a smaller number of questions which the Soviet delegates were now asked to answer.
There was,
initially, a rather hesitant approach to this, with the Russians at first asking for details of relevant accidents in other countries.
Session 3A, Working Group 1
Chairman B Edmondson
Discussion of Phenomena and Factors associated with the Short-Term Accident Sequence
This subject was intended to include the initiating event, sequence of events, reactivity excursion, containment response, instrumentation, operator response, stabilization measures
etc.
Dr Edmondson, opening the session, outlined the goals which were:
1.
To clarify information provided by the USSR delegation.
2.
To exchange other relevant information.
3.
To identify the broad requirements of nuclear- plant safety internationally.
Looking at other technical areas, these were:
1.
2.
3.
4.
5.
6.
The accident and its causes.
Specific issues related to the sequence of events - particularly core performance.
Design of plant to mitigate operator actions.
Procedures to be used to control special experiments or
tests.
How to guarantee appropriate standards of staff training, management practices etc.
The important lessons which can be learned from this event.
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