prise de refoulement

CONT: When the museum plans to install a new exhibition, the following precautions should be taken: ... Plans should avoid obstructing or interfering with guard's tour routes or concealing fire extinguishers and standpipe hose outlets.
OBS: Standpipe: A vertical water pipe used to supply fire-hose outlets in tall buildings.... Standpipes are either wet or dry, depending on whether they are continuously charged with water or empty when not in use.