Components of a major hazard control system

• Pages: 6-10

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2. Components of a major hazard control system

2.1. Definition and identification of major hazard installations

2.1.1. Competent authorities should make arrangements for both existing and

proposed new major hazard installations to be clearly defined and identified by a list of

hazardous substances or categories of substances and associated threshold quantities,

which should include:

(a) very toxic chemicals such as:

– methyl isocyanate;

– phosgene;

(b) toxic chemicals such as:

– acrylonitrile;

– ammonia;

– chlorine;

– sulphur dioxide;

– hydrogen sulphide;

– hydrogen cyanide;

– carbon disulphide;

– hydrogen fluoride;

– hydrogen chloride;

– sulphur trioxide;

(c) flammable gases and liquids;

(d) explosive substances such as:

– ammonium nitrate;

– nitroglycerine;

– trinitrotoluene.

2.1.2. The definition and identification of major hazard installations by the

competent authorities should be arranged in such a way that they allow priorities to be

set for those installations requiring particular attention.

2.2. Information about the installations

2.2.1. The works managements of all major hazard installations should notify

details of their activities to the competent authorities.

2.2.2. For major hazard installations within the scope of the definition, a safety

report should be prepared by the works management. This should include:

(a) technical information about the design and operation of the installation;