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PDFWAC 246-237-047

Security zones.

(1) Licensees shall ensure that all aggregated Category 1 and Category 2 quantities of radioactive material are used or stored within licensee-established security zones. Security zones may be permanent or temporary.
(2) Temporary security zones must be established as necessary to meet the licensee's transitory or intermittent business activities, such as periods of maintenance, source delivery, and source replacement.
(3) Security zones must, at a minimum, allow unescorted access only to approved individuals through:
(a) Isolation of Category 1 and Category 2 quantities of radioactive materials by the use of continuous physical barriers that allow access to the security zone only through established access control points. A physical barrier is a natural or man-made structure or formation sufficient for the isolation of the Category 1 or Category 2 quantities of radioactive material within a security zone; or
(b) Direct control of the security zone by approved individuals at all times; or
(c) A combination of continuous physical barriers and direct control.
(4) For Category 1 quantities of radioactive material during periods of maintenance, source receipt, preparation for shipment, installation, or source removal or exchange, the licensee shall, at a minimum, provide sufficient individuals approved for unescorted access to maintain continuous surveillance of sources in temporary security zones and in any security zone in which physical barriers or intrusion detection systems have been disabled to allow such activities.
(5) Individuals not approved for unescorted access to Category 1 or Category 2 quantities of radioactive material must be escorted by an approved individual when in a security zone.
[Statutory Authority: RCW 70.98.050 and 70.98.110. WSR 16-13-079, ยง 246-237-047, filed 6/14/16, effective 7/15/16.]
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