TECHNOLOGICAL RISK ASSESSMENT IN REGION REGARDING POPULATION PROTECTION

Abstract

The paper deals with assessing industrial risks in a region. Emphasis was laid on such
operations that do not fall under the scope of the directive on the prevention of major accidents
caused by chemical substances and preparations, yet they may pose an unacceptable hazard to
lives and health of employees, potential visitors and population in the surrounding area. It was
recommended to use the combination of the IAEA TEC DOC 727 and the "Purple Book" CPR
18E methods as economically acceptable and valid solution to the problem. The applicability of
the proposed procedure has been verified by a case study in a selected region and its three
economic entities. The operation of an ice arena has been identified as a risk through the IAEA
TEC DOC 727 method. The application of the "Purple Book" CPR 18 method resulted in the
decision to carry out an expensive quantitative risk analysis of the above mentioned operational
unit. Significant risk reduction measures have been proposed at the same time. The relocation
of the ice arena to the town periphery with low population density has been analysed as being
less effective. An indirect, two-stage cooling system utilizing the safer brine in the secondary
circuit appears to be more perspective than direct cooling of ice with ammonia. A set of
measures increasing the ice arena safety under current conditions has been proposed as well.