Ohio Administrative Code
Title 3701:1 - Radiation Control
Chapter 3701:1-58 - Medical Use of Radioactive Materials
Section 3701:1-58-61 - Full calibration measurements on teletherapy units
Current through all regulations passed and filed through March 18, 2024
(A) A licensee authorized to use a teletherapy unit for medical use shall perform full calibration measurements on each teletherapy unit:
(B) To satisfy the requirement of paragraph (A) of this rule, full calibration measurements must include determination of:
(C) A licensee shall use the dosimetry system described in paragraph (A) of rule 3701:1-58-60 of the Administrative Code to measure the output for one set of exposure conditions. The remaining radiation measurements required in paragraph (B)(1) of this rule may be made using a dosimetry system that indicates relative dose rates.
(D) A licensee shall make full calibration measurements required by paragraph (A) of this rule in accordance with published protocols accepted by nationally recognized bodies.
(E) A licensee shall mathematically correct the outputs determined in paragraph (B)(1) of this rule for radioactive decay for intervals not exceeding one month for cobalt-60, six months for cesium-137, or at intervals consistent with one per cent decay for all other nuclides.
(F) Full calibration measurements required by paragraph (A) of this rule and radioactive decay corrections required by paragraph (E) of this rule must be performed by the authorized medical physicist.
(G) A licensee shall retain a record of each calibration in accordance with rule 3701:1-58-94 of the Administrative Code.
Five Year Review (FYR) Dates:
06/12/2015 and
06/01/2020
Promulgated
Under: 119.03
Statutory
Authority: 3748.02,
3748.04
Rule
Amplifies: 3748.04
Prior
Effective Dates: 8/15/2005, 10/4/10