Radiation-Emitting Products

When I perform the semiannual compression QC test, our unit's initial power drive provides an initial compression force of 37 pounds. However, it cannot maintain that force. The force decreases to less than 25 pounds in approximately 1 second. How long does the initial power drive have to maintain a force of at least 25 pounds?

Policy Guidance Help System logo

The initial power drive must maintain a compression force of at least 25 pounds for the length of time it usually takes the radiologic technologist to either complete an average exposure OR engage the fine adjustment control. If the fine adjustment control is engaged then it must maintain a compression force of at least 25 pounds for the length of time it usually takes the radiologic technologist to complete an average exposure. If, during the semiannual compression QC test, the unit cannot maintain a force of at least 25 pounds for the specified timeframe, it fails the test and needs to be repaired, modified or replaced. 21 C.F.R. 900.12(e)(4)(iii). If the unit passes this test, but still loses compression force during clinical examinations (see Question 4 above), the unit must be repaired, modified or replaced.

Back to Application of Compression

Page Last Updated: 08/13/2014
Note: If you need help accessing information in different file formats, see Instructions for Downloading Viewers and Players.