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Radiation Exposure Monitoring - doe-std-1098-99_reaffirmed_2004_120127
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Area Radiation Monitors cont'd


DOE-STD-1098-99
Radiological Control
Radiological Health Support Operations
June 2004
4.
When radioactive material exceeding a Type A quantity (as defined in 10 CFR 71) is received, radiation monitoring
of the received packages shall performed if:
a.
The package is labeled in accordance with the applicable transportation requirements (e.g., Radioactive White
I or Yellow II or III label) [see 835.405(b)(1)]; or
b.
The package has been transported as low specific activity material on an exclusive vehicle [see
835.405(b)(2)].
The external surfaces of all packages received from transportation should be monitored to determine the external
radiation level, unless the packaged materials are not capable of creating an external radiation hazard (i.e., the packages
contains only materials that emit radiation of low penetrating ability). These surveys are used to ensure compliance with
Department of Transportation regulations and applicable DOE Orders and to identify appropriate postings and access
control measures. These measures should be established as soon as practicable after receipt.
5.
Monitoring shall also be performed when a received package containing greater than a Type A quantity of
radioactive material shows evidence of degradation, such as packages that are crushed, wet, or damaged [see
835.405(b)(3)].
6.
Monitoring of received packages of radioactive material shall be performed as soon as practicable following
receipt, but not later than eight hours following the beginning of the working day following the receipt of the
package [see 835.405(d)].
7.
See Articles 554 for additional provisions for radioactive material receipt.
553 Area Radiation Monitors
1.
In addition to the requirements and recommendations of Article 551, area radiation monitors (not to include area
monitoring dosimeters discussed in Article 514) should be installed in frequently occupied locations with the
potential for unexpected increases in dose rates and in remote locations where there is a need for local indication of
dose rates prior to personnel entry.
2.
Area radiation monitors should not be substituted for radiation exposure surveys in characterizing a workplace.
3.
The need for and placement of area radiation monitors should be documented and assessed when changes to
facilities, systems, or equipment occur.
4.
In addition to the requirements of Article 562, area radiation monitors should be tested at least quarterly to verify
audible alarm system operability and audibility under ambient working conditions and operability of visual alarms
when so equipped.
5.
If installed instrumentation is removed from service for maintenance or calibration, a radiation monitoring program
providing similar detection capability should be maintained, consistent with the potential for unexpected increases
in radiation dose rates.
6.
Where an area radiation monitor is incorporated into a safety interlock system, the circuitry should be such that a
failure of the monitor either prevents entry into the area or prevents operation of the radiation producing device. If
the circuitry is required to ensure compliance with the high radiation area access control requirements of 10 CFR
835.502, then the circuitry shall be fail-safe [see 825.502(b)].
554 Contamination Monitoring
5-16


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