| Author | Udorn Khunvichai |
| Call Number | AIT Thesis no. 477 |
| Subject(s) | Atomic power-plants
Nuclear reactors
|
| Note | A thesis submitted in partial fulfillment of the requirements
for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand. |
| Publisher | Asian Institute of Technology |
| Abstract | The reliability approach to safety assessment is a very useful tool. in the design of the scram system of nuclear reactors.
Reliability enables engineer to compare alternative solutions to
design problems on a logical basis. Even if the data of failure
rate is not as accurate as the assessor would like, the relative
merits of alternative designs can still be compared.
A control rod of boiling water reactor which has its own
hydraulic control unit .has been used for more than 20 years.
But it is presently not suitable, because the capacity of nuclear
power plant constructed now is larger than 600 MW. The plant of this capacity requires more than 100 control rods. The objective of this study is then to propose the better scram system for the large nuclear power plant. The study is divided into four parts. In the first part, the different configurations of scram system are obtained by using the basic components needed in the boiling water reactor. For obtaining different arrangements of the systems due consideration were given on the critical point of the system and the limitation of the space for the components of the system. The second part of this study is to evaluate the reliability of all system configurations. The systems that has reasonably high reliability (more than 99.99 percent) are chosen. Then in the third part, the maximum availability criteria is used to select the better systems.
Both reliability and availability analysis are based on the negative exponential distribution and the minimum repair time.
The last part of the study is to adjust the inspection period of
the system chosen from the previous sections. The selected scram system is the system consisting of 4-100 percent tank capacity ( 2 tanks for each header) and single scram valve per tank. |
| Year | 1972 |
| Type | Thesis |
| School | Student Research Before 1980 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Sharif, M. N. ;Nakamura K. |
| Examination Committee(s) | Pakorn Adulbhan ; Drew, Donald R. |
| Scholarship Donor(s) | Electricity Generating
Authority of Thailand (EGAT) |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 1972 |
