Lone worker alarms

A potentially serious problem has always existed where people are working alone (as is quite often the case at the JKT),in the event of sudden illness, accident etc. Hence the introduction of the lone worker alarm worker is very welcome, and requires minimal effort from the lone worker. Whilst lone JKT workers are strongly encouraged to use the system, those who choose not to should simply leave the sender unit in it's charger.

JKT lone workers are referred to the OPERATION section below. The rest is included partly for information, and partly to remind lone workers of the consequences of leaving the sender unit somewhere. If you intend to use the system please use the belt provided, or your own.

$\circ$

PURPOSE. To inform duty staff that a person working alone requires urgent assistance or is hurt or immobile.

$\circ$

LOCATION. The signal receiver unit is located within the WHT control room, with sender units located with the meridian circle observer, DIMM operator, and JKT visiting observer (or Support Astronomer during an S/D night).

$\circ$

OPERATION. The JKT observer will be instructed how to use the system by their Support Astronomer (SA), and must then decide whether they wish to use the system. If yes then please use the belt provided (to prevent leaving the sender unit somewhere, and issuing a false alarm), and ensure that you return the sender unit to its charger at the end of each night. If no, then please leave the sender unit on its charger, alongside the 2-way radios in the ICS room adjoining the control room. The sender unit motion sensitive, and must be worn on the person at all times during the night. Normal movement, even sitting, will NOT activate the sender unit. However, if the lone worker should not move for a period of one minute the unit will issue a local beep. If after a further 12 seconds the unit has still not sensed movement it will send a radio signal to the alarm receiver unit in the WHT control room, and the alarm plus the automatic telephone dialing and messages will be activated. Alternatively if the lone worker is in difficulty they can push the red button on the sender unit and it will also send the radio signal to activate the alarm receiver unit.

$\circ$

RESPONSIBILITIES. Workers in the WHT control room will normally be the first person to hear the alarm. This will be indicated by an intermittent beeper. A red light will indicate the particular lone worker who requires assistance. The Incident Officer will be informed immediately with the information on which lone worker has activated the alarm. The IO will record the event and when satisfied can reset the alarm. If the WHT control room is unoccupied and the alarm call is not answered, after one minute the system auto-dials the following numbers: 559 (WHT control room and kitchen), 640 (the INT control room and kitchen) and 522 (the Incident Officers bedroom in the Residencia). A recorded message will repeat "Lone worker alarm activated, inform the Incident Officer immediately"

$\circ$

The receiver unit in the WHT control room will need to be reset by the Incident Officer after every alarm. If the IO is called at 03:00 because the observer put their sender unit down and forgot about it, then the IO is not going to be too happy. Please ensure that you use the belt provided (or your own), or attach it to your person by some other means. Once it is in place, do not remove it, unless it is to replace in the charger at the end of the night.