I just realised that the Menara ExxonMobil lifts had audible signals indicating whether the carriage is heading up or down. It gives a single tone for a carriage going up or two tones going down. I think my office block has the same audible setup as well, but I haven’t noticed that.
Oil and gas sites have audible (and visual) alarms that indicate potentially how serious a situation is. The alarm levels I’m used to are:
- Process alarm – potential process upset.
- Assembly alarm – platform personnel are required to assemble at the safe haven.
- Abandon platform – leave the platform, now.
I’m well trained. Upon hearing the assembly alarm, I go from sound sleep to heading out of the living quarters without engaging my brain :).
Wata - Malaysian Oil and Gas Engineer 