Safety Manual - Spms
Safety Manual - Spms
Safety Manual - Spms
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
SCHOOL OF PHYSICAL & MATHEMATICAL SCIENCES<br />
LABORATORY SAFETY MANUAL<br />
respective radioactive waste room for “delaying and decaying” until most<br />
radioactivity of the particular radioisotope is minimal.<br />
When the radioactivity is minimal (e.g. GM counter readings at less than or<br />
equals to 1 cps or survey meter readings less than 0.5 microsieverts per<br />
hour), the waste has to be disposed according to the requirement by National<br />
Environment Agency (please refer to NEA Website for details or see<br />
Appendix II)<br />
When transporting radionuclides, a secondary container shall be used to<br />
contain possible spillage. Absorbent materials should also be used to retain<br />
the isotope in case of breakage/spillage. All containers should be able to<br />
provide sufficient shielding and must bear the radioactive label, indicating<br />
isotope and activity.<br />
12.9 Radiation Survey Meter & Personal Monitoring Device<br />
Types of Radiation Survey Meter<br />
Ionisation<br />
chamber survey<br />
meters are used<br />
to measure<br />
radiation<br />
exposure rate<br />
from gamma &<br />
X-rays<br />
GM counter rate<br />
meters are used<br />
principally to<br />
detect gamma<br />
rays, X-rays &<br />
beta particles<br />
In our workplace, the use of survey meter measured in µSv/h is strongly<br />
recommended. Schools or research centres / institutes may use any other survey<br />
meters like Geiger Muller Counters or Scintillation Counters, but are required to<br />
possess at least one calibrated survey meter measuring radiation in µSv/h.<br />
COLLEGE OF SCIENCE 76
Change language