Kan. Admin. Regs. § 28-35-284 - Personnel monitoring
(a) The licensee or
registrant shall not permit any individual to act as a radiographer or a
radiographer's assistant unless, at all times during radiographic operations,
each individual wears on the trunk of the body a personnel-monitoring device
(PMD) as specified in K.A.R. 28-35-217a, a direct reading dosimeter, and an
alarming ratemeter. At permanent radiographic installations where other
appropriate alarming or warning devices are in routine use and during
radiographic operations using radiation machines, the use of an alarming
ratemeter shall not be required.
(1) Each
pocket ion-chamber dosimeter shall have a range from zero to 200 mrem and shall
be recharged at the start of each work shift. Electronic personal dosimeters
may be used in place of only pocket ion-chamber dosimeters.
(2) Each PMD shall be assigned to and worn by
only one individual.
(3) Each PMD
shall be exchanged at least monthly.
(4) After replacement, each PMD shall be
returned to the supplier for processing within 14 calendar days after the end
of the monitoring period, or as soon as practicable. In circumstances that make
it impossible to return each PMD within 14 calendar days, these circumstances
shall be documented and available for review by the department.
(b) Direct reading dosimeters,
including pocket ion-chamber dosimeters and electronic personal dosimeters,
shall be read and the exposures shall be recorded at the beginning and end of
each work shift, and records shall be maintained for two years.
(c) All pocket ion-chamber dosimeters and
electronic personal dosimeters shall be checked at least each 12 months for the
proper response to and the accurate measurement of radiation, and records shall
be maintained for two years. An acceptable reading on each dosimeter shall be
within plus or minus 30 percent of the true radiation exposure.
(d) If an individual's pocket ion-chamber
dosimeter is found to be off-scale or if an electronic personal dosimeter reads
greater than 200 mrem, the individual's PMD shall be sent for processing within
24 hours. In addition, the individual shall not resume any work associated with
the use of sources of radiation until a determination of the amount of
individual's radiation exposure is made. This determination shall be made by
the radiation safety officer or the radiation safety officer's designee. The
results of this determination shall be included in the records.
(e) If an individual's PMD is lost or
damaged, the individual shall cease work immediately until a replacement PMD is
provided and the exposure is calculated for the time period from issuance to
loss or damage of the PMD. The results of the calculated exposure and the time
period during which the PMD was lost or damaged shall be included in the
records.
(f) Each licensee or
registrant shall ensure that each alarming ratemeter meets the following
requirements:
(1) Is checked to ensure that
the alarm functions properly before using at the start of each shift;
(2) is set to give an alarm signal
at a preset dose rate of 500 mrem per hour, with an accuracy of plus or minus
20 percent of the true radiation dose rate;
(3) requires a special means to change the
preset alarm function; and
(4) is
calibrated at least each 12 months for the accurate measurement of radiation.
(g) Records of
personnel-monitoring procedures. Each licensee or registrant shall maintain the
following exposure records:
(1) Direct
reading dosimeter readings and yearly operability checks for two years after
the record is made;
(2) records of
alarm ratemeter calibrations for two years after the record is made;
(3) PMD results received from the accredited
NVLAP processor until the department terminates the license; and
(4) records of exposure estimates as a result
of any direct reading dosimeter that reads off-scale or any lost or damaged
personnel-monitoring equipment, until the department terminates the license.
Notes
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