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// CODE SNIPPET

465.2 Control of Access to High Radiation Areas

2020 FBC - Building, 7th edition > 4 Special Detailed Requirements Based on Occupancy and Use > 465 Control of Radiation Hazards > 465.2 Control of Access to High Radiation Areas
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465.2.1 Definitions

HIGH RADIATION AREA. An area, accessible to individuals, in which radiation levels from radiation sources external to the body could result in an individual receiving a dose equivalent in excess of 1 mSv (0.1 rem) in 1 hour at 30 cm from any source of radiation or from any surface that the radiation penetrates. For purposes of this section, rooms or areas in which diagnostic X-ray systems are used for healing arts purposes are not considered high radiation areas.
VERY HIGH RADIATION AREA. An area, accessible to individuals, in which radiation levels from radiation sources external to the body could result in an individual receiving an absorbed dose in excess to 500 rad (5 gray) in 1 hour at 1 m from a source of radiation or from any surface that the radiation penetrates. At very high doses received at high dose rates, units of absorbed dose, gray and rad, are appropriate, rather than units of dose equivalent, sievert and rem.

465.2.2

The licensee or registrant shall ensure that each entrance or access point to a high radiation area has one or more of the following features:

465.2.2.1

A control device that upon entry into the area causes the level of radiation to be reduced below that level at which an individual might receive a deep dose equivalent of 0.1 rem (1 millisievert) in 1 hour at 30 cm from the source of radiation from any surface that the radiation penetrates;

465.2.2.2

A control device that energizes a conspicuous visible or audible signal so that the individual entering the high radiation area and the supervisor of the activity are made aware of the entry; or

465.2.2.3

Entryways that are locked except during periods when access to the areas is required with positive control over each individual entry.

Related Code Sections


465.2 Special Detailed Requirements Based on Use and Occupancy, Control of Access to High Radiation Areas
HIGH RADIATION AREA. An area, accessible to individuals, in which radiation levels from radiation sources external to the body could result ...
2017 FBC - Building, 6th edition > 4 Special Detailed Requirements Based on Use and Occupancy > 465 Control of Radiation Hazards > 465.2 Control of Access to High Radiation Areas
465.2 Special Detailed Requirements Based on Occupancy and Use, Control of Access to High Radiation Areas
HIGH RADIATION AREA. An area, accessible to individuals, in which radiation levels from radiation sources external to the body could result ...
2020 FBC - Building, 7th edition > 4 Special Detailed Requirements Based on Occupancy and Use > 465 Control of Radiation Hazards > 465.2 Control of Access to High Radiation Areas
465.2 Special Detailed Requirements Based on Use and Occupancy, Control of Access to High Radiation Areas
HIGH RADIATION AREA. An area, accessible to individuals, in which radiation levels from radiation sources external to the body could result ...
2014 FBC - Building, 5th edition > 4 Special Detailed Requirements Based on Use and Occupancy > 465 Control of Radiation Hazards > 465.2 Control of Access to High Radiation Areas
465.2.2 Special Detailed Requirements Based on Use and Occupancy,
The licensee or registrant shall ensure that each entrance or access point to a high radiation area has one or more of the following features ...
2014 FBC - Building, 5th edition > 4 Special Detailed Requirements Based on Use and Occupancy > 465 Control of Radiation Hazards > 465.2 Control of Access to High Radiation Areas > 465.2.2
465.2.2.2 Special Detailed Requirements Based on Use and Occupancy,
A control device that energizes a conspicuous visible or audible signal so that the individual entering the high radiation area and the supervisor ...
2017 FBC - Building, 6th edition > 4 Special Detailed Requirements Based on Use and Occupancy > 465 Control of Radiation Hazards > 465.2 Control of Access to High Radiation Areas > 465.2.2 > 465.2.2.2
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