- Rapport
- Kärnkraft
Acceptance Criteria for Polymers in Nuclear Applications 2016
| 2017:389 | Konsta Sipilä, Harri Joki, Tiina Lavonen, Antti Paajanen, Sami Penttilä, Marcus Granlund, Anna Bondesson, Anna Jansson
Polymeric materials are widely used in nuclear power plants. In this COMRADE project polymer ageing studies are conducted. A correlation, between the function of an O-ring and the material properties when the end of life criteria is reached, has been identified. Different material properties have shown better or worse correlation to the end of life of the function. Almost no difference in change in material properties between radiated and non-irradiated has been identified.
\u003Cp\u003EThe synergistic effects of radiation and heat were experimentally studied with EPDM and CSM. As a result, it was noted that increasing temperature can either hinder or accelerate degradation, depending on the polymer type. From oxidation profile measurements, it was noted that ToF SIMS seems to be a promising method to obtaining from the three techniques tested (FTIR and DSC being others). For dose rate effect evaluation, three different semi-empirical models were identified which could be applied for this purpose\u003C/p\u003E