With the increasing reliance on “SMART” instruments in safety systems, the problem of substantiating the software in these instruments has been a concern of the NII for a number of years.
The EMPHASIS tool was developed to assist the nuclear site operators to achieve a common level of substantiation whilst eliminating duplication of effort. The SIL1 certified Omni16C alarm annunciator has been substantiated by EMPHASIS for use in the UK nuclear industry.