Well, we have a classic case here.
Someone who doesn't know where to find the answer to a reasonable question posts it here.
Someone else answers, without quoting any references or sources.
The answer is almost entirely rubbish.
PPRuNE strikes again!
Ops and Mops, try calling Aerodrome Standards on 01293 567171 on Monday morning, and asking to discuss with them in the first instance. Ater that, you might need clarification from FOI or GAD (or whatever it's called these days), depending on what sort of operation you're involved in.
And learn your lesson well. Casting around for answers amongst the great unwashed here will never ease the pain of confusion or incompetence!