Which of the following are disadvantages of using a tld as a personnel monitoring device?
Disclaimer: Disclaimer: Reference on this page to any specific commercial product, process, service, manufacturer, or company does NOT constitute its endorsement or recommendation by the U.S. government or the U.S. Department of Health and Human Services or any of its agencies. Products are displayed as examples only. HHS is not responsible for the contents of any "off-site" Web page referenced on this site. Dosimeter Equipment Category Description Advantages and Disadvantages Handheld survey meters Examples: Advantages: Limitations: Personal dosimeter Examples: Advantages: Limitations: Pocket ionization chamber Examples: in photo below older versions on top, newer version on bottom of photo below Advantages: Limitations: Electronic personal dosimeter (EPD) Examples: Advantages: Limitations: Personal emergency radiation detectors (PERDs) and monitors Examples: Advantages Limitations Non-alarming PERDs Examples: RadTriage50Sensor® formerly known as SIRAD® Advantages Limitations Personal radiation detectors (PRDs) Examples: Advantages Limitations Extended range personal radiation detectors (ER-PRDs) Examples: Advantages Limitations
Radioisotope identification device (RIID) Examples: Advantages Limitations Source: Table above adapted from 2 documents: Abbreviations: R = roentgens; Gy = gray ; Sv = sieverts Radiation emergency worker: those who would be called upon to assist with the response to a radiation incident even though their regular job does NOT expose them to
levels of radiation higher than normal background radiation Traditional radiation workers: those whose occupations involve exposure to radiation and who are part of an occupational radiation dose monitoring and protection program Radiation Zones are defined by the measurement of R in air at the perimeter of a zone; it could be "hotter" inside the perimeter line. isodose maps are created, and they are similar to maps with isobars or isotherms.
See REMM graphic. This graphic relates to fallout after an IND but these zones could be defined in other kinds of incidents. Outdoor Radiation Zones as defined by NCRP: Dangerous Radiation Zone: >10 R/h (>0.1 Sv/h); Hot zone >10 mR/h (>0.1 mSv/h); Cold zone: < 10
mR/h (<0.1 mSv/h) beyond this perimeter. Other organizations have different names for these radiation zones, as noted on REMM: Which of the following three types of personal radiation monitoring devices is most sensitive?The pocket ionization chamber, which resembles an ordinary fountain pen, is considered to be the most sensitive type of personnel dosimeter. There are two types of pocket dosimeters: self- reading and non self-reading.
What should a personal dosimeter provide an indication of?What does the dosimeter do? A radiation dosimeter or badge does not provide protection but detects and measures radiation that you have been exposed to. The badge will detect high-energy beta, gamma or x-ray radiation.
Which of the following are some of the advantages of the OSL dosimeter?Advantages of OSL Dosimeters
will be a decrease of signal of less than one percent in a second reading. Used OSL badges are often archived for several years. No fading except in extreme temperatures. No annealing required.
What is the maximum period of time that a thermoluminescent dosimeter TLD may be worn as a personnel device?TLDs can be worn for up three months, can be reused & are more sensitive than film badges (to about 5 mrem or 0.05 mSv).
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