Advanced First Order Second Moment Method (AFOSM) aka Hasofer-Lind safety index method

I am trying to understand the Hasofer-Lind safety index method but I have found no references with a complete but simple example illustrating this method. Has anyone on the discussion forum attempted this and if so would they be willing to upload their example template so that I can examine what they have done so that I understand it. Unfortunately all the references I have describe lay down complicated math which doesn't give one an intuitive feel for this important concept which is often used in quantitative risk assessments.

Thanking you in advance, Mark Buckton.