By Smith S.
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Additional resources for Some Multiplets of Doubly Ionized Lead
Example text
Becquerel A unit of activity equal to one disintegration per second. beta particle An electron. cosmic rays A stream of ionizing radiation of extraterrestrial origin. 7 ¥ 1010 disintegrations per second. daughter The product of a radioactive decay. distribution coefficient The ratio of the concentration of adsorbed isotope to its concentration in a solution with which the adsorbing surface is in equilibrium. dosimeter An integrating device that measures the total radiation dose received by an individual over a period of time.
Saudi Aramco DeskTop Standards 28 Engineering Encyclopedia Laboratory Radioactive Scales FIGURE 31. Median of Difference of Radiation Levels Over Background for Equipment in Production Facilities (µrem/hr). (API, 1989) For gas processing facilities (Figure 32), the highest medians were found on reflux pumps in gas fractionators. This median was 76 µrem/hr with a 75th percentile of 291 µrem/hr. Saudi Aramco DeskTop Standards 29 Engineering Encyclopedia Laboratory Radioactive Scales FIGURE 32. Median of Difference of Radiation Levels Over Background for Gas Facility Equipment (µrem/hr).
If activity approaches the limits described above, the area should be posted and access limited to informed personnel. The internal activity of equipment will be about five times that measured through a steel wall. If such equipment is to be opened or dismantled, it should be checked with a Geiger counter to determine if surface activities exceed limits for inhalation. If activity exceeds established limits, the equipment should be entered only by trained personnel wearing protective clothing. The process equipment will require decontamination prior to reassembly by mechanics.
Some Multiplets of Doubly Ionized Lead by Smith S.
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