By Alan Martin, Sam Harbison, Karen Beach, Peter Cole
An advent to Radiation Protection is a hugely readable account of the character of the risks awarded through ionizing radiation and the tools of safeguard for these new to the sphere and for the non-specialist.
The 6th variation of this tested textual content takes readers throughout the normal historical past of the topic, the technical rules underlying the keep watch over of radiation risks, radiation detection and dimension, and the organic results of radiation. those ideas are by way of a attention of radiation safeguard concerns within the nuclear undefined, the non-nuclear region, and the clinical box. additional specialized themes comprise threat overview, waste administration and decommissioning, radiological incidents and emergencies, suitable laws, and organizational issues.
Supplemented by way of transparent diagrams and pictures, precis sections, and revision questions, the e-book is acceptable for the newbie in addition to the extra complicated radiation practitioner. It continues to be a terrific primer for these operating within the nuclear undefined, nuclear medication technicians, radiographers and clinical physics technicians, well-being and defense executives and occupational well-being pros. it's also a useful significant other for somebody education or project a path in radiation protection.
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Extra resources for An Introduction to Radiation Protection
Explain the relationship between the sievert and the rem. 5. Explain why the sievert is a more suitable unit in health physics than the gray. 6. Calculate the neutron flux at a distance of0·3 m from a neutron source which emits 3 x 10 7 neutrons per second. Radiation Units 35 7. Calculate the SI equivalents of the following: IOOmrad, 5 rad, 0·1 mrem, I rem. 8. In one week an operator on a nuclear reactor works for 4 hours in an area in which the y and neutron dose rates respectively are 50 J1Sv/h and 70 J1Sv/h, and for a further 18 hours in an area in which the dose rate is 20 11Svjh y (no neutrons).
For example, the mean dose rate to the gonads at sea-level, at the equator, has been measured as 0·23 mSv/year (23 mrem/year) while the dose 51 52 An Introduction to Radiation Protection rate at 10000 feet was 0·56 mSvjyear (56 mremjyear). The average dose rate in the British Isles from cosmic radiation is about 0·5 mSv/ year (50 mremjyear). One very important radionuclide arises from the interaction of neutrons in cosmic radiation with nitrogen in the upper atmosphere to form carbon-14 as follows: t4N(n,p)t4c The carbon-14, which has a half-life of 5568 years, diffuses to the lower atmosphere where it may become incorporated in living matter.
1 Introduction The interaction of ionizing radiation with the human body, arising either from external sources outside the body or from internal contamination of the body by radioactive substances, leads to biological effects which may later show up as clinical symptoms. The nature and severity of these symptoms and the time at which they appear depend on the amount of radiation absorbed and the rate at which it is received. Radiation injuries can be divided into two classes: somatic effects in which the damage appears in the irradiated person himself, and hereditary effects which arise only in the offspring of the irradiated person as a result of radiation damage to germ cells in the reproductive organs- the gonads.
An Introduction to Radiation Protection by Alan Martin, Sam Harbison, Karen Beach, Peter Cole