Document: 10 CFR Part 20
Document ID: 5925b78e-e71e-4c97-9dd1-cd81c947f09f
Document Type: cfr
Title: Control of access to high radiation areas.
Source: 10 CFR Part 20
Source URL: https://www.ecfr.gov/current/title-10/part-20/section-20.1601
Revision Date: 
Chapter: 
Section ID: 20.1601
CFR Part: 20
CFR Title: 10

Content:
§ 20.1601 Control of access to high radiation areas. ( a ) The licensee shall ensure that each entrance or access point to a high radiation area has one or more of the following features— ( 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 mSv) in 1 hour at 30 centimeters from the radiation source or from any surface that the radiation penetrates; ( 2 ) A control device that energizes a conspicuous visible or audible alarm signal so that the individual entering the high radiation area and the supervisor of the activity are made aware of the entry; or ( 3 ) Entryways that are locked, except during periods when access to the areas is required, with positive control over each individual entry. ( b ) In place of the controls required by paragraph (a) of this section for a high radiation area, the licensee may substitute continuous direct or electronic surveillance that is capable of preventing unauthorized entry. ( c ) A licensee may apply to the Commission for approval of alternative methods for controlling access to high radiation areas. ( d ) The licensee shall establish the controls required by paragraphs (a) and (c) of this section in a way that does not prevent individuals from leaving a high radiation area. ( e ) Control is not required for each entrance or access point to a room or other area that is a high radiation area solely because of the presence of radioactive materials prepared for transport and packaged and labeled in accordance with the regulations of the Department of Transportation provided that— ( 1 ) The packages do not remain in the area longer than 3 days; and ( 2 ) The dose rate at 1 meter from the external surface of any package does not exceed 0.01 rem (0.1 mSv) per hour. ( f ) Control of entrance or access to rooms or other areas in hospitals is not required solely because of the presence of patients