The tube housing assembly supports shall be adjusted so that the tube housing assembly will remain stable during an exposure unless tube housing movement is a designed function of the X-ray system.
25 Pa. Code § 221.27
The provisions of this §221.27 issued under section 302 of the Radiation Protection Act (35 P. S. § 7110.302); and section 1920-A of The Administrative Code of 1929 (71 P. S. § 510-20).
This section cited in 25 Pa. Code § 221.35a (relating to fluoroscopic X-ray systems).