ANSI N449 : 1974
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
COBALT-60 AND CESIUM-137 TELETHERAPY EQUIPMENT, GUIDELINES FOR MAINTAINING,
07-23-2013
01-12-2013
Describes effective maintenance and inspection program for teletherapy equipment permitting radiation safety of operating personnel and delivery of accurate dose to patients.
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