Page 80 - Fundamentals of Magnetic Thermonuclear Reactor Design

ITER – International Thermonuclear Experimental Reactor Chapter | 3 63

1.7 The responsible organisation should define the requirements for the design
implementation and for the design documents.

Group two:
2.1 Prior to design implementation, all proposed design inputs should have
been agreed, documented and authorised. Any modifications in design in-
puts should be agreed using the same procedure as in the case of inputs
themselves.
2.2 Any physical and/or computer models should adequately reflect the real
properties of systems/subsystems to be modelled and all requirements
imposed on them.
2.3 Results should be considered, discussed and approved after the comple-
tion of a design stage. Any discussion should address at least the following
questions:
i. Have the input data been selected correctly?
ii. Have the stage objectives been achieved?
iii. Has the work plan been completed?
iv. Have the design techniques been selected correctly?
v. Have the design procedure requirements been met?
vi. How well do the results agree with specifications?
2.4 The results of design activities should be reviewed and checked for confor-
mity with specifications throughout the whole design process.
2.5 Design verification should be performed by subjecting prototypes of facil-
ity systems and components to a suitable qualification test.
2.6 Any modification proposed during design activities should be justified and
documented. The expected or intended influence of a modification on related
systems and components and the facility as a whole must be investigated.
Group three:
In the analysis of measures implemented during design activities and design
results, it is important to separate evaluations made by the personnel of the or-
ganisation in charge of the design and assessments made by independent third
parties or governmental supervising authorities.
Generally, evaluation aims to establish
l attained level of the facility’s safety,
l whether materials and equipment have been selected correctly,
l how well the suppliers and contractors have performed their duties, and
l how well non-conformances and deviations have been handled.
National regulations for the QA on designing radiologically hazardous fa-
cilities usually conform to the standards developed by the IAEA. Deviations are
insignificant and are usually due to differing legal systems.
Implementation of quality assurance standards in the design of thermonucle-
ar facilities is illustrated by the ITER example.