prCWA

Design and Construction Codes for Gen II to IV nuclear facilities

Scope

The planned CEN/CENELEC Workshop Agreement defines Recommendations to modify the existing AFCEN codes. It will be the continuation of CEN/WS 064 – Phase IV.

The proposed CEN/WS 64 phase IV will enable members to:

a) Identify and propose requests for changes to the AFCEN codes;
For existing good industrial and regulatory practices at European level that are not or only partially included in the AFCEN codes that are sufficiently mature, requests for modifications should be proposed. For their possible integration in the codes, these requests will then be processed by AFCEN according to the internal procedure in force.
This objective constitutes the finalisation of the work of the workshop since the less mature topics are the subject of the objectives described in b) and c) which are only intermediate steps.
b) Identify and recommend medium-long term orientations of evolution of AFCEN codes ;
Some rules presently considered cannot directly be included in the codes either because of an insufficient robustness of their demonstration or because there is no suitable way to deal with them in the current status of the code. When the integration of new rules of comparable nature or related to the same field seems feasible in a medium-long term period, a precise proposition on the evolution of the code structure could be recommended to allow it.
In this scope, the capability of the codes to deal with the greatest span of national safety regulations, as well as standards promoted by international organizations, will be sought.

c) Identify the R&D needs associated to these recommendations ;
Inventory of the R&D needs for the codification shall be established with a corresponding list of priority actions.
Some R&D needs for setting design rules for some equipments or, more frequently, to get basic data for some materials, in particular for irradiated materials, were already identified (e.g. materials not currently used in the nuclear industry, proton irradiation effects on materials).

d) Drafting technical documents on subjects that have been investigated but that do not lead to a recommendation for modification or a proposal for an R&D programme. This is to capitalise on the work that has been done within the PGs. Later on, these technical documents can be used as a basis for modification requests or R&D proposals.