NUREG-1537, Part 2 - NRC

CHAPS 16
treatment. The door or entrance should be interlocked with the systems
used to cut off the beam if someone enters.
The medical therapy treatment facility should be designed with two
independent, redundant systems that have the capability to cut off the
neutron beam within a short time. Beam controls and method of motion
should be as described in the format and content guide. Interlocks between
the systems and the medical therapy treatment room door or entrance
should be based on the design guidance in the format and content guide.
* The medical therapy treatment room should have a method for viewing the
patient during treatment. If a direct viewing method such as through a lead
glass window is not used, redundant methods should be provided.
Emergency lighting should be provided.
* The medical therapy treatment facility personnel'should be able to scram
the reactor from the medical therapy treatment facility control area and
from within the medical therapy treatment room. They should also be able
to communicate with the reactor control room and the inside of the medical
therapy treatment room.
* The medical therapy treatment room should contain a radiation monitoring
system that confirms that the beam is off by measuring radiation fields
inside the room.: The monitor should have alarms as described in the
format and content guide and should have an emergency power supply.
* The medical therapy'treatment facility should have a beam monitoring
system that determines the dose given to the patient.
* The responsibilities of the non-power reactor licensee and the physician
authorized user should be stated. This includes the method of referring
patients for treatment to the non-power reactor and the rules for starting
and stopping treatment
* Procedures should exist for removing the patient from the medical therapy
treatment room in the case of medical complications or equipment failures.
* The applicant should propose surveillance requirements for equipment
important to the safety of the staff who work in the medical therapy
treatment facility and patients who are treated there. These surveillances
may be postponed if therapy is not being conducted.
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