Environmental Engineering Reference
In-Depth Information
perspective, the residual life assessment and evaluation of probabilistic
reliability characteristics of ageing processed not considered in design are
of greatest interest.
1.6 Quantitative characteristics of reliability and
their implications for safety analysis and
optimisation of operating costs 
Table 1.1 Major components of nuclear power plants with PWR and their degradation mechanisms
Mechanisms of
Components
Creep
embrittle-
ment
Corrosion
cracking under
stress
Hydrogen
embrittlement
Radioactive
Nuclear reactor pres-
sure vessel
X
X
Reactor containment
and base plate
X
X
X
The pipe reactor cool-
ant
Steam generator tubes
X
Circulation pump
Pressurizer
X
￿ ￿ ￿ ￿ ￿
Control rod
X
Cables
X
Emergency diesel
generator
Reactor internals
X
X
Support reactor
X
X
Feed-pipe, nozzle and
housing the steam
generator
X
 
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