TABLE OF CONTENTS Some pages of the EUR criteria relevant to nuclear safety are reproduced in this appendix (courtesy of the European Utility Requirements Group through its member SOGIN, Italy). The order in which paragraphs are shown has been adjusted to fit into the present context. Most notes are not included. The whole document can be consulted on the EUR website at http://www.europeanutilityrequirements.org although some areas require access permission. The EUR criteria numbering system has been kept together with the cross-references within the criteria.
PWR
Category 1
Steady-state and start-up conditions and shutdowns
power operation
start-up
hot standby
hot shutdown
cold shutdown
refuelling shutdown
operation with an inactive loop, if applicable
Anticipated operating transients:
temperature increase and decrease at a maximum rate of 55 C per hour
step load increase and decrease (10% load)
load increase and decrease at a rate of 5% rated load/minute (between 15 and 100% full power)
switch-over to hassled operation from full power with steam dump
limiting conditions allowed by the technical specifications
Category 2
inadvertent withdrawal of RCCA bank with reactor subcritical
inadvertent withdrawal of RCCA bank with reactor power
misalignment of control rod assembly or bank drop
inadvertent boric acid dilution, partial loss of core coolant flow
inadvertent closure of main steam isolation valve
total loss of load and/or turbine trip
loss of main feedwater flow to steam generators
malfunction of steam generator main feedwater system
total loss of off-site power (<2 hours)
excess increase in turbine load (at full...
