Thermo Scientific NITON XL3t 500, User Manual

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Radiation and General Safety
Radiation Protection Basics
Thermo Scientific NITON XL3 Analyzer User’s Guide 3-3
Table 3-1. Typical Radiation Doses Received (Source: NCRP 1987)
Category Dose in mrem Dose in mSv
Average total dose in US (annual) 360 3.6
Average worker exposure (annual) 210 2.1
Average exposure for an underground miner 400 4.0
Exposure for airline crew (1,000 hours at 35,000
ft) 500 5.0
Additional from living in Denver at 5300’
(annual) 25 .25
Additional from 4 pCi/l radon in home 1,000 10.0
Typical Chest X-Ray 6 0.06
Typical Head or Neck X-Ray 20 0.2
Typical pelvis/hip x-ray 65 0.65
Typical lumbar spine x-ray 30 0.3
Typical Upper G.I. x-ray 245 2.45
Typical Barium enema x-ray 405 4.05
Typical CAT scan 110 1.10
Table 3-2. Annual Occupational Dose Limits for Radiation Workers
(Source: Code of Federal regulations Title 10, Part 20)
Category Dose in mrem Dose in mSv
Whole Body 5000 50
Pregnant Worker (during gestation period) 500 5
Eye Dose Equivalent 15,000 150
Shallow dose equivalent to the skin or any
extremity or organ 50,000 500
Maximum allowable dose for the general
public (annual) 100 1.0
For a Minor 500 5.0