CEDO Regulations Flashcards
Who can use an exposure device
Nuclear substances and radiation device regulations s.24
No person other than a certified exposure device operator or trainer who is acting under the direct supervision and continuous observation of a certified device operator, shall operate an exposure device
Every person who operate an exposure device shall_____
Nuclear Substances and Radiation Devices Regulations
S.31
c) wear on the trunk of the body a dosimeter that:
i) has been issued by a licensed dosimetry service, and
ii) has not been used by another person since its last reading
d) wear on the trunk of the body a dosimeter that
i) has a direct-reading display capabilities
ii) is of a type suitable for recording any dose of radiation that the person is likely to receive as the result of the operation of the exposure device
iii) has been calibrated or had its calibration verified within 12 my nth period prior to wearing to an accuracy of 20% of the true dose of radiation
f) wear on the trunk of the body a dosimeter that
ii) emits an audible warning signal when the radiation intensity reached or exceeds 5mSv per hour or when the total audible warning signal increased proportionally to the radiation intensity
What is the standard to verify the operation of the Survey Meter
Nuclear Substances and Radiation Devices Regulations
S. 31
1) every person who operated an exposure device shall
a) use a radiation survey meter that
i) is capable of measuring a intensity of gamma radiation from the sealed source of between 20uSv and 100mSv per hour and
ii) indicates that the power level is sufficient for its operation
What is the standard to survey the exposure device
Nuclear Substances and Radiation Devices Regulations
S.30
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 of more than 2mSv a Er hour on any part of the surface
S.31
1) every person who operates an exposure device shall
h) after each attempt to move the sealed source to the unshielded position inside the exposure device, use a radiation survey meter to determine that the sealed source is in the shielded position
How is a CEDO expected to examine all equipment
Nuclear Substances and Radiation Devices Regulations S.31
1) every person who operates an exposure device shall
g) examine the sealed source assembly coupling and guide tube, the locking mechanism, the cranking device, the drive cable and the pneumatic pump of the exposure device immediately before operating the device to ensure that the device is functioning according to the manufacturers specifications
How are CEDOs expected to control area
Nuclear Substances and Radiation Devices Regulations S31
1 Every person who operates an exposure device shall
j) place persons or erect barriers to prevent entry into any area within which the radiation intensity is greater than 0.1mSv per hours as a result of the possession or use of the exposure device
k) post a sufficient number of durable and legible signs that beat the radiation warning symbol set out in Schedule 3 to the Radiation Protection Regulations and the words “Rayonment - Danger - Radiation to prevent entry into any area within which the radiation intensity is greater than 0.1mSv per hour as a result of the possession or use of exposure device
What is the regulation standard to ensure the source is fully shielded
Nuclear Substances and Radiation Devices Regulations S.31
h) after each attempt to love the sealed source to the shielded position inside the exposure device, use a radiation survey meter to determine that the sealed source is in the shielded position
l) lock the exposure device when it is not being operated
What two levels of transport apply to radiography equipment
When the source activity is less than 259GBq of Co60, or 740GQb was of IR192, a Type A package can be used. Over those amount a Type B package is required
What type of packages do exposure devices normally meet
Type B
All Type B packages require the approval of:
Canadian Nuclear Safety Commission in the form of a certificate I sued by CNSC
If a foreign designed and manufactured package is required the approval of
Canadian approval in the form of an endorsement is f the foreign approval a copy of the CNSC certificate must be carried at all times
What tools shall a CEDO have on hand
Nuclear Substances and Radiation Devices Regulations S.31
b) when an external sealed source assembly guide tube is being used, have immediately available the following means
i) material that can be used to attenuate by a factor of at least 100, the from the sealed source
ii) tools that can sever from the exposure device the tube and cable which the sealed source assembly has s attached and
iii) tongs with a shaft at least 1.5m long that can handle the sealed source assembly
Although not required a CEDO should also have on hand
15m electricians snake
Assortment of tools
