25 Pa. Code § 228.69 – Termination of irradiation by the dose monitoring system or systems.

(a) A dose monitoring system shall be capable of independently terminating irradiation.
(b) A primary system shall terminate irradiation when the preselected number of dose monitor units has been detected by the system.
(c) A secondary dose monitoring system shall terminate irradiation when either 110% of the preselected number of dose monitor units or 10 dose monitor units (whichever is greater) has been detected by the secondary dose monitoring system.
(d) For new equipment, an indicator on the control panel shall show which dose monitoring system has terminated irradiation.

The provisions of this § 228.69 adopted October 2, 1998, effective October 3, 1998, 28 Pa.B. 4894.