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Neutron and Gamma Radiography Inspection on the Delayed Neutron Activation Terminus at the REACTOR TRIGA PUSPATI |
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PP: 85-89 |
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doi:10.18576/jrna/070110
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Author(s) |
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Muhammad Rawi Mohamed Zin,
Rafhayudi Jamro,
Azraf Azman,
Khairiah Yazid,
Zaifol Samsu,
Hishamuddin Husain,
Faridah Idris,
Mohd Fairus Abdul Farid,
Ridhuan Abdul Mutalib,
Shaharudin Sayuti,
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Abstract |
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| Neutron and Gamma Radiography techniques were used to inspect the cadmium and regular terminus in the delayed neutron
activation instrument of REACTOR TRIGA PUSPATI (RTP) nuclear research reactor in Malaysian Nuclear Agency. The inspection
using neutron radiography technique has been conducted at 750 KW of RTP’s thermal power. Gamma radiography inspection was
conducted using silinium-75 gamma source with the radioactivity of 12 Ci. In neutron radiography testing, the neutron beam from
reactor core is extracted through the collimator via radial beamport #3 with the thermal neutron flux at 4.7 meter away from the
collimator inlet is around 105 ncm2s1. The exposure for both inspection techniques have been made on the sample and recording
the image by utilizing the conventional radiographic film for 20 minutes. The neutron radiograph reveals that there are two plastic vile
inside the regular terminus. There is a better contrast seen in the neutron radiographic image as the vile is made from hydrogenous
material when compared with the radiography image obtained from gamma radiation. On the other hand, radiograph obtained by
gamma inspection showing insight in the terminus contained a layer of cadmium sheet in cadmium terminus. |
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