Decompression - Annual Quality Control Test
900.12(e)(5)(xi)(A)(B)(C): Decompression. If the system is equipped with a provision for automatic decompression after completion of an exposure or interruption of power to the system, the system shall be tested to confirm that it provides:
(A) An override capability to allow maintenance of compression;
(B) A continuous display of the override status; and
(C) A manual emergency compression release that can be activated in the event of power or automatic release failure.
Approved Alternative Standard:
- We have a DMR unit in which the automatic decompression override status is displayed only under certain conditions, does this still meet the requirement to be continuously displayed?
- Our unit's automatic decompression mechanism has been deactivated and can't be reactivated by anyone at the facility. Does its status still have to be continuously displayed?
- Must all mammography units have an emergency compression release?
- The regulations state that while in automatic decompression override status, mammography equipment must provide "maintenance of compression" after completion of an exposure or in case of a power interruption. What degree of compression and for how long must it be maintained?