The RCC-M/RSE-M international mechanics workshop held in February 27th 2017 allowed 70 attendees to exchange on design analysis methods and new NDE techniques used in nuclear application.
Andrey Obushev, VO Safety, pointed out the great effort made in Russia to set up modern standards.
M Zhang emphasized on the particularity of Chinese Nuclear Industry where engineering activities and manufacturing activities are performed by different companies.
Dr Duan explained the efficiency of TOFD method which is widely used in China, though not yet detailed in RCC-M codes. Dr Wasylyk and C. Faidy (Consultant) commented the document on the comparison of non-linear analysis methods mentioned in the codes. However L Jian, from DCNS and A.Byk reported that RCC-M code and ASME code will propose new appendices covering this subject in their 2017 edition: ZC for RCC-M, Appendices XIII, XIV and L for Section III of ASME.
The British R6 rule has made good progress on the defects sizing method. This shows the current interest and dynamism around that activity. However, during manufacturing phase, the Qualification of non-destructive examination (NDE) inspectors has to be improved. This could be achieved by the use of the new ASME NDE (ANDE) accreditation standard and the relevant application of NF EN ISO 9712, as reported by E Martin (EDF). F Lasserre emphasized on the importance of this Qualification, more so with advanced alternative methods (TOFD and PAUT) on the RCC-M. Other methods, such as guided waves methods, can also be relevant and efficient, as explained by C Carpentier (TWI). This method is used in Great Britain on the AGR. (Advanced Gas-cooled Reactor)
Prof. Niagaj from Polish Welding Institute, concluded on the need of NDE methods for Polish industries and particularly for the Polish nuclear projects which are still under-discussion.
This workshop was an intensive but pleasant day, appropriate for exchanges to challenge and reinforce the choices made in the codes to improve the quality of the construction of the equipment.