Attention: TDR Forum Junkies 
I checked out the link, according to it, it would appear almost any leak could be ignored... I do not know the accuracy of the learning material provided.
I do see some practices stated that I disagree with
D big surprise). I have never used dry nitrogen to pressurize a system to leak test, but have always used vacuum, when I first started in the industry, 30 inches of vacuum for 6 hrs, then later 500 microns. Some of that material seems to contradict itself, first it states what level of vacuum is required, but then says not to use it because a leak will introduce air to the system... Really... then you fix the leak and start over.
I really don't know what to tell you, I would contact RSES (refrigeration service engineers society) for clarification and current updates on the epa regulations.
Because the RBOC's (regional bell operating companies) had deep pockets, and it's actions were always under the microscope, we may have had to adhere to stricter tolerances than were required by law idk. I know before US West/Qwest took over, the Property Management team was quite proactive and almost always went above and beyond, now under Century Link the Property Management is all but non-existent.
Hey, I just looked at my refrigerant certification cards, RSES Type I & II (12-28-93), ESCO INSTITUTE Type Universal (11-30-94), man I am getting old :-laf Jess
I do see some practices stated that I disagree with
D big surprise). I have never used dry nitrogen to pressurize a system to leak test, but have always used vacuum, when I first started in the industry, 30 inches of vacuum for 6 hrs, then later 500 microns. Some of that material seems to contradict itself, first it states what level of vacuum is required, but then says not to use it because a leak will introduce air to the system... Really... then you fix the leak and start over. I really don't know what to tell you, I would contact RSES (refrigeration service engineers society) for clarification and current updates on the epa regulations.
Because the RBOC's (regional bell operating companies) had deep pockets, and it's actions were always under the microscope, we may have had to adhere to stricter tolerances than were required by law idk. I know before US West/Qwest took over, the Property Management team was quite proactive and almost always went above and beyond, now under Century Link the Property Management is all but non-existent.
Hey, I just looked at my refrigerant certification cards, RSES Type I & II (12-28-93), ESCO INSTITUTE Type Universal (11-30-94), man I am getting old :-laf Jess
