OAR 333-123-0075
Timer

An irradiation control device timer shall be provided to terminate the irradiation after a pre-set time interval or integrated charge on a dosimeter-based monitor.

(1)

A timer shall be provided at the treatment control panel. The timer shall indicate planned setting and the time elapsed or remaining;

(2)

A timer shall not permit an exposure if set at zero;

(3)

A timer shall be a cumulative device that activates with an indication of “BEAM-ON” and retains its reading after irradiation is interrupted or terminated. After irradiation is terminated and before irradiation can be reinitiated, it shall be necessary to reset the elapsed time indicator;

(4)

A timer shall terminate irradiation when a pre-selected time has elapsed, if any dose monitoring system has not previously terminated irradiation;

(5)

A timer shall permit setting of exposure times as short as 0.1 second;

(6)

A timer shall be accurate to within one percent of the selected value or 0.1 second, whichever is greater; and

(7)

A redundant treatment monitoring system (backup timer) shall be present at the treatment console to use as the treatment stop criterion in case the primary treatment control device timer malfunctions.

Source: Rule 333-123-0075 — Timer, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=333-123-0075.

333‑123‑0001
Purpose and Scope 333‑123‑0005
Definitions 333‑123‑0010
General Requirements, Operating Procedures, Surveys, Dosimetry, and Instrument Calibration for Facilities Using Therapeutic Radiation Machines 333‑123‑0015
Training and Qualification Requirements for Individuals in the External Beam Radiation Therapy Area 333‑123‑0020
Reports and Notifications of Unplanned Medical Treatment 333‑123‑0025
Requirements for Therapeutic Radiation Machines 333‑123‑0030
Facility Design Requirements for Therapeutic Radiation Machines 333‑123‑0035
Calibration, Acceptance Testing and Commissioning of Therapeutic Radiation Machines 333‑123‑0040
Quality Assurance And Safety Checks 333‑123‑0045
Quality Assurance Program 333‑123‑0050
Qualified Medical Physicist Support in Facilities Having Therapeutic Radiation Machines with Energies of 1 Mv and Above 333‑123‑0055
Electronic Brachytherapy 333‑123‑0060
Facility Design Requirements for Electronic Brachytherapy Devices 333‑123‑0065
Electrical Safety for Electronic Brachytherapy Devices 333‑123‑0070
Control Panel Functions 333‑123‑0075
Timer 333‑123‑0080
Medical Physicist 333‑123‑0085
Operating Procedures 333‑123‑0090
Safety Precautions for Electronic Brachytherapy Devices 333‑123‑0095
Electronic Brachytherapy Source Calibration Measurements 333‑123‑0100
Periodic and Day-of-Use Quality Assurance Checks for Electronic Brachytherapy Devices 333‑123‑0105
Therapy Related Computer Systems 333‑123‑0110
Training 333‑123‑0115
Mobile Electronic Brachytherapy Service 333‑123‑0120
Superficial Electronic Brachytherapy 333‑123‑0125
Superficial Electronic Brachytherapy Personnel Requirements 333‑123‑0130
Superficial Electronic Brachytherapy: Refresher Training 333‑123‑0135
Superficial Electronic Brachytherapy: Activation of the Superficial Electronic Brachytherapy X-ray Tube 333‑123‑0140
Superficial Electronic Brachytherapy: Facility Design Requirements 333‑123‑0145
Superficial Electronic Brachytherapy: Calibration, Acceptance Testing and Commissioning 333‑123‑0150
Superficial Electronic Brachytherapy: Quality Assurance Checks 333‑123‑0155
Superficial Electronic Brachytherapy: Operating Procedures
Last Updated

Jun. 8, 2021

Rule 333-123-0075’s source at or​.us