Nuclear Substances and Radiation Devices Regulations

30 (1) Every licensee who possesses, uses or produces an exposure device shall

• (a) ensure that there is affixed securely to the exposure device, by means of metal fasteners, a durable steel or brass tag that is readily visible and legibly inscribed with the name, quantity in becquerels, date of measurement of that quantity and form of the nuclear substance contained in the exposure device;

• (b) lock the exposure device and keep it locked when it is not being used; and

• (c) return a dosimeter referred to in paragraph (3)(c) to the dosimetry service that issued the dosimeter, within 10 days after the end of the period referred to in subsection 31(2).

(2) Every licensee who becomes aware of any of the following situations shall notify the Commission immediately of the location and circumstances of the situation and of any action that the licensee has taken or proposes to take with respect to it:

• (a) the exposure device or the sealed source assembly is lost, stolen or damaged to an extent that could impair its normal use;

• (b) the exposure device has a radiation dose rate of more than 2 mSv per hour on any part of its surface when the sealed source assembly is in the shielded position;

• (c) the sealed source assembly is separated from the exposure device when the latter is not being serviced; or

• (d) the sealed source assembly fails to return to the shielded position inside the exposure device.

(3) Every licensee who authorizes a person to operate an exposure device shall provide the person with

• (a) a radiation survey meter that

  • (i) is capable of measuring a dose rate of gamma radiation from the sealed source of between 20 µSv and 100 mSv per hour, and

  • (ii) indicates that the power level of its batteries is sufficient for its operation;

• (b) if an external sealed source assembly guide tube is to be used,

  • (i) material that can be used to attenuate, by a factor of at least 100, the radiation from the sealed source,

  • (ii) tools that can sever from the exposure device the tube and cable to which the sealed source assembly is attached, and

  • (iii) tongs with a shaft at least 1.5 m long that can handle the sealed source assembly;

• (c) a dosimeter that

  • (i) has been issued by a licensed dosimetry service,

  • (ii) has not been used by another person since its last reading, and

  • (iii) is designed so that it can be worn on the trunk of the body;

• (d) a dosimeter that

  • (i) has direct-reading display capability,

  • (ii) is of a type suitable for recording any dose of radiation that the person is likely to receive as a result of the operation of the exposure device,

  • (iii) has been calibrated or had its calibration verified, within the 12-month period prior to being provided, to an accuracy within 20 per cent of the true dose of radiation, and

  • (iv) is designed so that it can be worn on the trunk of the body;

• (e) a dosimeter that

  • (i) is of a type suitable for recording any dose of radiation that the person is likely to receive as a result of the operation of the exposure device,

  • (ii) emits an audible warning signal when the radiation dose rate reaches or exceeds 5 mSv per hour or when the total dose of radiation reaches or exceeds 2 mSv, or emits an audible warning signal that increases proportionally to the radiation dose rate,

  • (iii) is designed to prevent an unintentional change in the radiation dose rate or total dose of radiation at which the dosimeter will emit an audible warning signal,

  • (iv) has been calibrated or had its calibration verified, within the 12-month period prior to being provided, to an accuracy within 20 per cent of the true dose of radiation, and

  • (v) is designed so that it can be worn on the trunk of the body;

• (f) a sufficient number of durable and legible signs that bear the radiation warning symbol set out in Schedule 3 to the Radiation Protection Regulations and the words “RAYONNEMENT — DANGER — RADIATION” to enable the person to comply with paragraph 31(1)(k); and

• (g) a sufficient number of forms to enable the person to keep the records referred to in paragraph 31(1)(e) and section 37.

(4) No licensee shall authorize a person to operate an exposure device that

• (a) does not appear to be functioning normally; or

• (b) has a radiation dose rate of more than 2 mSv per hour on any part of its surface.

(5) Every licensee who authorizes a person to remove a sealed source from or insert a sealed source into an exposure device shall provide the person with a written authorization signed by the licensee.

(6) Every licensee shall limit the dose of radiation received by a person, other than a nuclear energy worker, as a result of the possession or use of an exposure device to 0.1 mSv per week and 0.5 mSv per year.

(7) No licensee shall authorize any person to respond to any of the following situations unless the person has received specialized training in the safety, regulatory and technical requirements for dealing with those situations or has received training in the safety, regulatory and technical requirements for dealing with those situations and is acting under the guidance of a person who has received the specialized training:

• (a) the exposure device or the sealed source assembly is damaged to an extent that could impair its normal use;

• (b) the exposure device has a radiation dose rate of more than 2 mSv per hour on any part of its surface when the sealed source assembly is in the shielded position;

• (c) the sealed source assembly is separated from the exposure device when the latter is not being serviced; or

• (d) the sealed source assembly fails to return to the shielded position inside the exposure device.