12.4 Emergency Instructions
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12.4 Emergency Instructions
In case of serious operational trouble, such as fire or explo-
sion, which could adversely affect the radiometric measur-
ing facility, it cannot be ruled out that the function of the
shielding lock, the shielding efficiency or the stability of the
source capsule have been impaired. In this case, it is possi-
ble that persons in the vicinity of the shielding have been
exposed to higher levels of radiation.
If you suspect such a severe malfunction, the Radiation
Safety Officer has to be notified immediately. He will then in-
vestigate the situation immediately and take all necessary provi-
sions to prevent further damage and to avoid more exposure of the
operating staff to radiation.
The Radiation Safety Officer has to make sure that the measuring
system is no longer in operation and then take appropriate steps.
He may have to inform the authorities or contact the manufacturer
or supplier of the measuring system.
If adequate know-how as well as suitable instruments are avail-
able, emergency measures may be taken immediately. In this
case, proceed as follows:
1. Locate the shielding.
2. Check the function of the shielding.
3. Check the efficiency of the shielding by measuring the dose
rate.
4. Secure and label radiation protection areas.
5. Secure the shielding with source.
6. Document the event and estimate the possible radiation level
to which the persons involved were exposed.
If you suspect any damage to the source capsule, the following
points have to be observed as well:
1. Avoid contamination.
2. Take hold of source using a tool (a pair of pliers or a pair of
tweezers) and put both (source and tool) into a plastic bag.
3. Secure them behind an auxiliary shielding (concrete wall, steel
or lead plate).
4. Check if the environment is free of contamination.
5. Make sure the radioactive waste is secured and disposed off in
compliance with the pertinent regulatory requirements.
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