Section

[Code of Federal Regulations]
[Title 10, Volume 1]
[Revised as of January 1, 2001]
From the U.S. Government Printing Office via GPO Access
[CITE: 10CFR34.47]

[Page 544-545]

TITLE 10--ENERGY

CHAPTER I--NUCLEAR REGULATORY COMMISSION

PART 34--LICENSES FOR INDUSTRIAL RADIOGRAPHY AND RADIATION SAFETY REQUIREMENTS FOR INDUSTRIAL RADIOGRAPHIC OPERATIONS--Table of Contents

Subpart D--Radiation Safety Requirements

Sec. 34.47 Personnel monitoring.

(a) The licensee may 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 combination of direct reading dosimeter, an operating alarm
ratemeter, and either a film badge or a TLD. At permanent radiography
installations where other appropriate alarming or warning devices are in
routine use, the wearing of an alarming ratemeter is not required.
(1) Pocket dosimeters must have a range from zero to 2 millisieverts
(200 millirems) and must be recharged at the start of each shift.
Electronic personal dosimeters may only be used in place of ion-chamber
pocket dosimeters.
(2) Each film badge and TLD must be assigned to and worn by only one
individual.
(3) Film badges must be replaced at periods not to exceed one month
and TLDs must be replaced at periods not to exceed three months.
(4) After replacement, each film badge or TLD must be processed as
soon as possible.
(b) Direct reading dosimeters such as pocket dosimeters or
electronic personal dosimeters, must be read and the exposures recorded
at the beginning and end of each shift, and records must be maintained
in accordance with Sec. 34.83.
(c) Pocket dosimeters, or electronic personal dosimeters, must be
checked at periods not to exceed 12 months for correct response to
radiation, and records must be maintained in accordance with Sec. 34.83.
Acceptable dosimeters must read within plus or minus 20 percent of the
true radiation exposure.
(d) If an individual's pocket dosimeter is found to be off-scale, or
if his or her electronic personal dosimeter reads greater than 2
millisieverts (200

[[Page 545]]

millirems), and the possibility of radiation exposure cannot be ruled
out as the cause, the individual's film badge or TLD must be sent for
processing within 24 hours. In addition, the individual may not resume
work associated with licensed material use until a determination of the
individual's radiation exposure has been made. This determination must
be made by the RSO or the RSO's designee. The results of this
determination must be included in the records maintained in accordance
with Sec. 34.83.
(e) If a film badge or TLD is lost or damaged, the worker shall
cease work immediately until a replacement film badge or TLD is provided
and the exposure is calculated for the time period from issuance to loss
or damage of the film badge or TLD. The results of the calculated
exposure and the time period for which the film badge or TLD was lost or
damaged must be included in the records maintained in accordance with
Sec. 34.83.
(f) Reports received from the film badge or TLD processor must be
retained in accordance with Sec. 34.83.
(g) Each alarm ratemeter must--
(1) Be checked to ensure that the alarm functions properly (sounds)
before using at the start of each shift;
(2) Be set to give an alarm signal at a preset dose rate of 5 mSv/hr
(500 mrem/hr); with an accuracy of plus or minus 20 percent of the true
radiation dose rate;
(3) Require special means to change the preset alarm function; and
(4) Be calibrated at periods not to exceed 12 months for correct
response to radiation. The licensee shall maintain records of alarm
ratemeter calibrations in accordance with Sec. 34.83.

Effective Date Note: At 65 FR 63751, Oct. 24, 2000, Sec. 34.47 was
amended by revising the introductory text of paragraph (a), paragraph
(a)(2), (3), (4), (d), (e), and (f), effective Jan. 8, 2001. For the
convenience of the user, the revised text appears as follows:

Sec. 34.47 Personnel monitorng.

* * * * *

(2) Each personnel dosimeter must be assigned to and worn only by
one individual.
(3) Film badges must be replaced at periods not to exceed one month
and other personnel dosimeters processed and evaluated by an accredited
NVLAP processor must be replaced at periods not to exceed three months.
(4) After replacement, each personnel dosimeter must be processed as
soon as possible.

* * * * *

(d) If an individual's pocket chamber is found to be off-scale, or
if his or her electronic personal dosimeter reads greater than 2
millisieverts (200 millirems), and the possibility of radiation exposure
cannot be ruled out as the cause, the individual's personnel dosimeter
must be sent for processing within 24 hours. In addition, the individual
may not resume work associated with licensed material use until a
determination of the individual's radiation exposure has been made. This
determination must be made by the RSO or the RSO's designee. The results
of this determination must be included in the records maintained in
accordance with Sec. 34.83.
(e) If the personnel dosimeter that is required by paragraph (a) of
this section is lost or damaged, the worker shall cease work immediately
until a replacement personnel dosimeter meeting the requirements in
paragraph (a) is provided and the exposure is calculated for the time
period from issuance to loss or damage of the personnel dosimeter. The
results of the calculated exposure and the time period for which the
personnel dosimeter was lost or damaged must be included in the records
maintained in accordance with Sec. 34.83.
(f) Dosimetry reports received from the accredited NVLAP personnel
dosimeter processor must be retained in accordance with Sec. 34.83.

* * * * *