"if you don't think NICET certificate holders are meant to do any hydraulics, what role do you see for us?
Or are you looking for the standards of NICET to be stepped up?"
It's not that NICET certificate holders cannot do this, but they should be done properly, under the "direct/immediate...
"So everyone will be keen to get the issues resolved and have some licence requirement for design comapnies (Sound like a good idea?"
Well contractor licensing has a lot of merit to it, but if you are looking for individual technicians to be licensed, then NO, not a good idea.
The problem...
"My seeking your opinions here has been for the purpose of my clarifying what I've read in the NFPA so that I may better understand where the code authority in our area may be coming from."
Therein lies the problem. Have you represented yourself or your firm to your client as capable to solve...
I have to weigh in with Stooky on this one. We are not your free FPE service.
I have been watching this post for a while now, and while you are very careful with your questions, you just finally hit me the wrong way.
In your previous post you said
"the fire permitting official with whom...
This doesn't sound like civil engineering work to me. Rather than try to glean enough information to try to cobble together what it needed, from one of these knowledgable and qulaified individuals that watch this forum, you should buck up and hire someone qualified to do this for you.