Optimisation of non-destructive testing - Probabilistic Safety Assessment for Optimum Nuclear Power Plant Life Management (PLiM) - page 224

'Unforseen
phenomena'

Operation,
changes
during operation

Design

Integral evaluation
of structural
integrity

Loading and/or
transition processes
grater than design
values
Unforeseen defects,
formation and
propagation

Geometry,
dimensions
Loading,
stresses
transition
processes
Material
properties

Geometry,
dimensions
Loading,
stresses
transition
processes

Operation

Optimisation of
ISI method

NDT method

Manufacture

Parameters,
methods,
equipment facilities,
algorithms/analysis,
procedures, practical
experience

Physical
fundamentals,
modelling

Specification,
procedures

Specification,
procedures

Growth of
existing defects,
formation
of new defects

Defects
formed in
manufacture

Relationship with
component parameters:
geometry, availability,
material properties

NDT during
manufacture

ISI

Factors affecting
improvement
of operational
characteristics

Feedback from
results of tests of
performance and
certification

Evaluation
of methods

Certification
by preparation
of technical
confirmation of tests
in practice

Stress
analysis
Fatigue
analysis
Evaluation of
degradation
Fracture
mechanics

Feedback from
service experience

￿ ￿ ￿ ￿ ￿

Factors affecting
operating
characteristics, e.g.
human factor

Experience
with
in-service
inspection,

Regulatory
requirements

7. 3 Areas interacting with ISI, for element A.