Ohio Admin. Code 3701:1-58-62 - Full calibration measurements on remote afterloader units
(A) A licensee
authorized to use a remote afterloader unit for medical use shall perform full
calibration measurements on each unit:
(1)
Before the first medical use of the unit;
(2) Before medical use under the following
conditions:
(a) Following replacement of the
source or following reinstallation of the unit in a new location outside the
facility; and
(b) Following any
repair of the unit that includes removal of the source or major repair of the
components associated with the source exposure assembly;
(3) At intervals not exceeding one quarter
for high dose-rate, medium dose-rate, and pulsed dose-rate remote afterloader
units with sources whose half-life exceeds seventy-five days; and
(4) At intervals not exceeding one year for
low dose-rate remote afterloader units.
(B) To satisfy the requirement of paragraph
(A) of this rule, full calibration measurements must include, as applicable,
determination of:
(1) The output within five
per cent;
(2) Source positioning
accuracy to within one millimeter;
(3) Source retraction with backup battery
upon power failure;
(4) Length of
the source transfer tubes;
(5)
Timer accuracy and linearity over the typical range of use;
(6) Length of the applicators; and
(7) Function of the source transfer tubes,
applicators, and transfer tube-applicator interfaces.
(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.
(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) In addition to the requirements for full
calibrations for low dose-rate remote afterloader units in paragraph (B) of
this rule, a licensee shall perform an autoradiograph of the source(s) to
verify inventory and source(s) arrangement at intervals not exceeding one
quarter.
(F) For low dose-rate
remote afterloader units, a licensee may use measurements provided by the
source manufacturer that are made in accordance with paragraphs (A) to (E) of
this rule.
(G) A licensee shall
mathematically correct the outputs determined in paragraph (B)(1) of this rule
for radioactive decay at intervals consistent with one
percent
per cent
radioactive decay.
(H) Full
calibration measurements required by paragraph (A) of this rule and radioactive
decay corrections required by paragraph (G) of this rule must be performed by
the authorized medical physicist.
(I) A licensee shall retain a record of each
calibration in accordance with rule
3701:1-58-94
of the Administrative Code.
Notes
Promulgated Under: 119.03
Statutory Authority: 3748.02, 3748.04
Rule Amplifies: 3748.04
Prior Effective Dates: 08/15/2005, 10/04/2010
Promulgated Under: 119.03
Statutory Authority: 3748.02, 3748.04
Rule Amplifies: 3748.04
Prior Effective Dates: 8/15/2005, 10/4/10
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