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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.48 [2010] >
IJPAP Vol.48(07) [July 2010] >
| Title: | Measurement of radon activity, exhalation rate and radiation doses in fly ash samples from NTPC Dadri, India |
| Authors: | Gupta, Mamta
Mahur, A K
Sonkawade, R G
Verma, K D
Prasad, Rajendra |
| Keywords: | Radon
Fly ash
LR-115 type II SSNTDs
Radon exhalation rate
NTPC Dadri |
| Issue Date: | Jul-2010 |
| Publisher: | CSIR |
| Abstract: | Radon activities and radon
exhalation rates have been measured in fly ash samples from NTPC (National
Thermal Power Corporation), Dadri situated in Uttar Pradesh, using “Can
technique”. This technique employs LR-115 type II solid state nuclear track
detectors fixed at the top of the “Can” filled with fly ash samples. Radon
activity has been found to vary from (222.56 ± 25.8) to (673.68 ± 45.1) Bqm-3 with an average value of (431.71 ± 35.5)
Bqm-3.
Surface exhalation rate has been found to vary from (80 ± 9) to (243 ± 16) mBqm-2h-1 with an average value (155 ± 13)
mBqm-2 h-1, whereas mass exhalation rate has
been found to vary from (3.1 ± 0.4) to (9.34 ± 0.6) mBq kg-1h-1 with an average value of (5.98 ±
0.5) mBqkg-1h-1. Indoor inhalation exposure (radon)
effective dose has also been estimated which is found to vary from
(5.8 ± 0.7) to (17.6 ± 1.2)  Svy-1 with an average value of (11.3 ± 0.9) Svy-1. |
| Page(s): | 520-523 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.48(07) [July 2010]
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