Science and Technology of Nuclear Installations

Research Article

Nuclear Power Plant Instrumentation Fault Detection Using Fuzzy Logic

Table 4

Deviations and frequencies of occurrence computed for pressurizer pressure signals.
Signal pairBefore day 200After day 200
Deviation (δ)Frequency of occurrence
( , , )		Deviation (δ)Frequency of occurrence
( , , )
1-210.40%, 16%, 99%4.732%, 100%, 0%
1-312.20%, 4.5%, 98%3.5100%, 100%, 0%
1-412.80%, 4%, 100%6.80%, 100%, 76%
2-32.24100%, 37%, 0%1.2100%, 4%, 0%
2-42.46100%, 30%, 0%2.1100%, 6%, 0%
3-42.36100%, 19%, 0%3.3100%, 100%, 0%