SIL Ratings

Hey guys,

Learning about SIL ratings and am trying to confirm if I have a PFD of 0.015 would that be a SIL rating of 2? Haven’t done a lot in this area so just trying to learn some more and understand.
My maths maybe a bit skew but I make PFD of 0.015 to be SIL 1.
bit more reading below - there is a lot more to understand !
Hey oneye14,

Absolutely correct it is a SIL rating of 1!! Thanks for taking the time to reply and sending through some links I’ll be sure to check that out to gain some more knowledge around SIL ratings.