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Publicatie Laka-bibliotheek:
Chernobyl - A Canadian Technical Perspective

Auteur	AECL
Datum	1987
Classificatie	2.34.8.10/13 (TSJERNOBYL - ONGELUK & OMGEVING - ALGEMEEN)
Voorkant

The Chernobyl Accident
A Technical Evaluation

I. INTRODUCTION

On April 26, i986, the #4 reactor at the Chernobyl Nuclear Power Station suffered 
a severe accident. The core and much of the building were destroyed; all the noble 
gases and several percent of other fission products were released to the environment.

The reactor design and the accident sequence, have been studied extensively since 
then. While a reasonable amount of information on the reactor design was publicly 
available, (References 1 to 6) the specific features of unit 14 design and the accident 
sequence, were presented by the Soviets at an International Atomic Energy Agency 
(IAEA) meeting in Vienna in August 1986. That report (Reference 7) is the most 
authoritative data available to date, and this information is now being used by all 
countries with a nuclear power program to examine the robustness of their plant 
design and operation with regard to the events at Chernobyl, and to see what lessons 
can be learned.

In this report we present the design review done to date in Canada by AECL. From 
the Canadian point of view it covers:

1. relevant information on the Chernobyl design and the accident, both as presented
(References 7, 8) by the Soviets at the Post-Accident Review Meeting (PARM) held 
in Vienna from August 25-29, 1986, and as deduced from publicly available Soviet 
documentation,

2. details of AECL's technical review of the CANDU PHWR (Pressurized Heavy
Water Reactor) against the background of the Chernobyl accident, and

3. implications of the Chernobyl accident.

Reviews of operational aspects are underway by the Canadian electrical utilities 
and a review by the Canadian regulatory agency (the Atomic Energy Control Board) 
is near completion.

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