I understand that, not long after the opening in a fanfare of trumpets ( quite literally) a large white elephant "somewhere in the North of England", did suffer a demonstration of the fire suppression system.
The, lets say, novel, excuse was that it was caused by the devoted work force which subsequently proved to be a complete fallacy as the cause was a glitch in the hardware, subsequently rectified.
Never daunted, some years later they went for a reprise. In this case, it would have been human being induced.
Having, as always, done some detailed research ( as in zero) , a Dutch carrier arrived for a spot of TLC...slight problem with the water tank...needed to be replenished and flushed through a couple of times....hence a source of water was required, this problem being known about prior to arrival please note.
The collective intellect of the previously mentioned researchers decided to use...the fire hose in the hangar.
Fortunately, or unfortunately depending on your viewpoint, with the hose actually deployed and ready to use, somebody with a brain pointed out that, once you squeezed the handle,, not only would water flow, but,
quelle surprise, the suppression system would also activate.