25 Pa. Code § 227a.55 - Shielded room radiation-producing devices
(a)
Control of access. A
room used for shielded room X-ray radiography must be shielded so that every
location on the exterior meets conditions for an unrestricted area. Access to
the room may only be through openings that are interlocked. The openings must
be interlocked so that the radiation source cannot operate unless all openings
are securely closed and meet the requirement of
10 CFR
20.1601 (relating to control of access to
high radiation areas).
(b)
Physical radiation survey. The operator shall conduct a
physical radiation survey to determine that the radiation source is deenergized
prior to each entry into the radiographic exposure area.
(c)
Radiation monitoring
system. The operator may use an independent radiation monitoring
system that displays the radiation intensity or displays when radiation levels
have returned to their pre-irradiation levels as an alternative to subsection
(b).
Notes
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