In-Service Inspection of Nuclear Power Plants - gnssn - International ...

This publication is no longer valid
Please see http://www-ns.iaea.org/standards/
2. REQUIREMENTS FOR
IN-SERVICE INSPECTION
2.1. GENERAL DESCRIPTION
An effective in-service inspection programme (see 50-SG-O2) is required for
the safe, reliable operation of a nuclear power plant. To achieve the objectives of
such a programme, both management and staff of the operating organization must
be highly dedicated and motivated to perform high quality work at all levels. The
in-service inspection programme can be a part of the overall surveillance
programme.
The objectives of the in-service inspection programme are, in decreasing
priority:
(1) to detect and evaluate defects that could result in a failure adverse to safety
prior to the next in-service inspection;
(2) to detect and evaluate defects that subsequently should receive enhanced inservice
inspection;
(3) to minimize plant costs arising from failures in plant systems and components;
(4) to make the most effective use of available resources taking into account inservice
inspection programme requirements, 'as low as reasonably achievable'
(ALARA) criteria, and co-ordination with other required maintenance and
operations activities.
The in-service inspection programme consists of all measures, administrative
and technical, necessary to perform in-service inspection of systems and components
important to safety. The programme should be described in a policy document of the
operating organization. (See an example in Annex 1.) The programme includes:
(1) the establishment of an in-service inspection organization, including a description
of technical and supervisory functions and a definition of responsibilities
and authority of each position;
(2) the establishment and implementation of administrative and control
procedures;
(3) the selection, training and qualification of personnel to perform in-service
inspection;
(4) the selection and qualification of procedures and equipment needed to perform
in-service inspection;
(5) the establishment and implementation of pre-service inspection;
(6) the establishment and implementation of follow-up actions based on the results
of in-service inspection results;
(7) the provision and maintenance of equipment for in-service inspection;