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008 170515s2014 th u m rtt 000 a eng d
035 _a.b12183465
099 9 _aAIT Thesis no.EV-14-20
100 0 _aSrisawan Somkit
245 1 0 _aInvestigation of the cesium-137 concentration in the residential soils of Nakhon Nayok Province in Thailand
260 _aPathum Thani, Thailand :
_bAsian Institute of Technology,
_c2014
300 _a80 leaves :
_bill. +
_e1 online resource
490 1 _aThesis ;
_vno. EV-14-20
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Environmental Engineering and Management
502 _aThesis (M.Eng.) - Asian Institute of Technology, 2014
520 _aThis study aimed at finding safety level for the human through measurement of Cs-137 in soil samples in order to set baseline data for the Nakhon Nayok Province in Thailand. Study here was conducted in order to help whether there was any possible health threat imposed by Cs- 137 exposure in the residential area of the Province. Furthermore, the main rationale behind the selection of this particular district was that in coming future Thailand has plan to establish Thai institute for nuclear technology. For the sampling, 21 soil samples were collected by grid sampling method in various location of Nakhon Nayok Province{u2019}s Districts which were Ongkharak, Ban Na, Pak Plee, Mueang Nakhon Nayok. In order to measure soil sample by gamma spectroscopy A-type HPGe detector was used. The results of the study showed that activity of the Cs-137 from samples ranged from 1.23 ± 0.05to 0.11 ± 0.01Bq.Kg-1 with an average value of 0.73±0.03Bq.Kg-1. For average value of outdoor, indoor as well as annual effective doses from the samples, the results found out were 7.0x 10 -8, 5.7 x 10 -5 and 5.7 x 10 -5 mSv.y-1 respectively. The results of the study portrayed that the values found out were very minute as compared with the annual dose rate as recommended by ICRP (1.0 mSv.y-1) and also the annual external gamma radiation dose (0.48 mSv.y-1) exposed on per person from naturally occurring sources of radiation.
650 0 _aCesium
_zThailand
_zNakhon Nayok
650 0 _aSoils
_xEffect of radiation on
700 1 _aAnnachhatre, Ajit P.,
_eChairperson
700 1 _aNguyen, Thi Kim Oanh,
_eExamination Committee
700 0 _aPiyawan Krisanangkura,
_eExamination Committee
700 0 _aYutthana Tumnoi,
_eExamination Committee
710 2 _aNational Science and Technology Development Agency (NSTDA), Thailand,
_eScholarship donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. EV-14-20
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B04582
907 _a.b12183465
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_vn
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