[Code of Federal Regulations]
[Title 10, Volume 1]
[Revised as of January 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 10CFR34.47]

[Page 558-559]
 
                            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 direct reading dosimeter, an operating alarm ratemeter, and a 
personnel dosimeter that is processed and evaluated by an accredited 
National Voluntary Laboratory Accreditation Program (NVLAP) processor. 
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 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.
    (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.

[[Page 559]]

    (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.
    (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.

[62 FR 28963, May 28, 1997, as amended at 65 FR 63751, Oct. 24, 2000]