Over deze norm
1.1 This practice covers procedures for designing a surveillance program for monitoring the radiation-induced changes in the mechanical properties of ferritic materials in light-water moderated nuclear power reactor vessels. New advanced light-water small molecular reactor designs with a nominal design output of 300 MWe or less have not been specifically considered in this practice. This practice includes the minimum requirements for the design of a surveillance program, selection of vessel material to be included, and the initial schedule for evaluation of materials.
1.2 This practice was developed for all light-water moderated nuclear power reactor vessels for which the predicted maximum fast neutron fluence (E > 1 MeV) exceeds 1 × 1021 neutrons/m 2 (1 × 1017 n/cm2) at the inside surface of the ferritic steel reactor vessel.
1.3 This practice does not provide specific procedures for monitoring the radiation induced changes in properties beyond the design life. Practice addresses changes to the withdrawal schedule during and beyond the design life.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
Note 1: The increased complexity of the requirements for a light-water moderated nuclear power reactor vessel surveillance program has necessitated the separation of the requirements into three related standards. Practice describes the minimum requirements for design of a surveillance program. Practice describes the procedures for testing and evaluation of surveillance capsules removed from a reactor vessel. Guide provides guidance for conducting additional mechanical tests. A summary of the many major revisions to Practice since its original issuance is contained in .
Note 2: This practice applies only to the planning and design of surveillance programs for reactor vessels designed and built after the effective date of this practice. Previous versions of Practice E185 apply to earlier reactor vessels. See .
|Engelse titel||Standard Practice for Design of Surveillance Programs for Light-Water Moderated Nuclear Power Reactor Vessels|