(ii)
(iii)
(iv)
(v)
(vi)
Survey Co-ordinator; the Survey Co-ordinator is responsible for organising the environmental surveys required by the MAC Controller, arranging for samples to be analysed for radioactivity, and for presenting the data to the MAC Controller in a suitable format. He or she must understand the nature of the radiological hazards, monitoring and sampling techniques, the use of radiation and contamination measuring instruments, and relevant analytical techniques.
Incident Assessor; the Incident Assessor must extract data from the installed equipment, the radiological survey results, weather information and forecasts, etc., and assess the nature of the incident, the potential radiological consequences and hence give advice on countermeasures. In order to carry out this function he or she must be familiar with the principles given in ICRP Publication 40, (ref 15), methods of evaluating the dispersion of radionuclides released to the atmosphere, (eg NRPB-R91 (ref 17) or use of suitable computer codes, see comments on the use of computers later in this chapter), the use of derived emergency reference levels, etc. Having made his or her assessment of the incident he or she must give advice upon the necessary countermeasures taking into account all necessary local factors prevailing at the time of the incident, for example, weather conditions. His or her advice on countermeasures should be given to the MAC Controller who in turn will pass on the information to the Civil Control Centre.
Monitoring Teams; it will be necessary to send out surveyors to measure the levels of radioactivity deposited on the ground, and perhaps airborne radioactivity. Each monitoring team will generally consist of two persons, one to drive the vehicle and one to take the measurements and transmit the data back to the Monitoring and Assessment Centre via radio. It is possible, of course, for these jobs to be carried out by a single driver/surveyor. The number of such monitoring teams will depend upon the nature of the accidental release and other local factors, however, it is likely that in the event of a major incident at least three such teams would be required. Because of the difficult terrain over which the monitoring teams may have to travel, and to avoid traffic congestion, consideration should be given to the use of helicopters provided by the Royal Hong Kong Auxiliary Air Force to transport one or more of the teams (however see comments in Section 12.9). The equipping of the monitoring teams will be discussed in Chapter 8.
Radio Operator; the Radio Operator will man the MAC radio base-station and pass messages to, and receive messages from, the mobile monitoring teams.
King's Park Radiation Laboratory Staff; the laboratory will carry out analysis of samples collected by the monitoring teams. The resulting data will be presented to the survey co-ordinator in an agreed format. (vii) Map Plotter; in order to ensure that all personnel in the MAC are aware of the current status of the incident,
wall maps plotting the survey results in an agreed format should be kept up to date by the Map Plotter. (viii) Log Keeper; in order to ensure that a log is maintained giving details of all messages received and given
(ix)
(x)
out, and actions taken, recorded in correct chronological order, a log keeper should be appointed for this task. The production of such a log is important for any subsequent analysis of the incident and the actions taken.
General Assistants; the role of the General Assistants is fairly wide ranging. They will be required to answer telephones, record incoming survey data, carry out routine analysis of these data, pass messages, run errands, arrange refreshments for the team, etc. It is likely that at least three such assistants will be required. Incident Assessor's Assistant; the role of the Incident Assessor's Assistant (IAA) is again wide ranging, however it is likely to require a more technical background than a General Assistant. The IAA could, for example, be required to carry out routine calculations, extract data from the survey results, obtain weather forecasts, etc.
Of the staff indentified above only the Controller, Survey Co-ordinator, Incident Assessor, Incident Assessor's Assistant, Radiation Laboratory staff and one member of each monitoring team require to have a high level of
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