What does RABNVS stand for?

RABNVS stands for Reactor Auxiliary Building Normal Ventilation System

This definition appears very rarely

Samples in periodicals archive:

The Abbreviation for Reactor is RX; Acronym/Abbr. "Quote" Scrabble; Reactor; Reactor auxiliary building normal ventilation system;

Reactor auxiliary building normal ventilation system; Reactor auxiliary building switchgear room ventilation system; Reactor building; Reactor building closed-loop...