​8. Alarm procedures

Evacuation alarms (e.g. fire, liquefied petroleum gas and acids)

  • Visible: Red, rotating light at all points
  • Audible:  Pulsating audio signal

When the constant signal (audible or visible) changes to short signals, YOU must immediately go to the indicated alarm point (see the map). Await further information from the emergency services before YOU return.

 

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Testing of the evacuation alarm

The alarm is tested for 30 seconds (at 15:00) on the first Monday of March, June, September and December (provided the Monday is not a public holiday).

Liquefied petroleum gas alarm

The melt shop/continuous casting and the hot coil mill have a liquefied petroleum gas alarm. On a liquefied petroleum gas alarm: there are audible and visible warnings; safety valves shut off the gas supply; and, alarm signals are sent to the main gate and the emergency services.

Low alarm (liquefied petroleum gas)

  • ​Visible:  Red, rotating light at the point of alarm
  • Audible:  None

A red, rotating warning light comes on at the unit where the alarm has been tripped. The gas supply is stopped (the safety valves close) automatically. The unit operators are the only people to receive this alarm. They know the exact procedure to follow.

High alarm (liquefied petroleum gas)

  • Visible: Red, rotating light at all points
  • Audible:  Constant signal

As long as you can hear this signal, YOU have time to complete work in progress, secure equipment and prepare evacuation.

Do not forget to switch off welding equipment, hand-held power tools, etc.

Read the next chapter: 9. Safety equipment and procedures