Safeguarding a baboon habitat
Preventing outbreaks in the zoo
A Trapped Key Interlock system from Fortress Interlocks can be used for a variety of applications. The use of mechanical interlock systems is a proven method for the majority of mechanical safety of machines and processes in various industries. But can Trapped Key Interlocks also prevent outbreaks in a zoo? The answer is, yes!
Securing animal enclosure Wildlands Amersfoort
Trapped Key Systeem
Secure access to baboon habitat

these are locked the moment door 1 or door 2 are open.
these are locked the moment door 1 or door 2 are open.
The outdoor area, take the security key
from the switch on door 2 inside to containment.
Request access at door 2,
by pressing the white button
of the safety switch.
Door 2 will not open until all hatches
and door 1 are closed.
The PLC locks all hatches and door 1,
so they cannot be opened.
The lock room
Request access at door 1,
by pressing the white button
on the safety switch.
Door 1 will not open until
all five hatches and door 2 are closed.
The PLC locks all hatches and door 2.
All hatches are equipped with safety switches,
these are locked the moment door 1 or door 2 are open.
All hatches are equipped with safety switches,
these are locked the moment door 1 or door 2 are open.
All hatches are equipped with safety switches,
these are locked the moment door 1 or door 2 are open.
The inside enclosure
We recently equipped the baboon enclosure at Wildlands in Amersfoort with a robust Trapped Key Interlock system. This solution is low-threshold, efficient and extremely reliable.
There is always a chance that an animal will escape from its enclosure in the zoo. An escape can lead to dangerous situations. It is possible to prevent an escape from a zoo with a Trapped Key Interlock system from Fortress Interlocks.
The baboon enclosure in the application example below is divided into several areas.
- The inside enclosure
- The outside enclosure
- The baboon arena
- The lock area
In this application example, three hatches lead from the inside enclosure to the outside enclosure and two hatches lead from the outside enclosure to the baboon arena. The lock room has two doors, door 1 and door 2.
The application works as follows
When someone wants to enter the baboon enclosure, he or she requests access at door 1 by pressing the white button on the safety switch. Door 1 will only open when all five hatches and door 2 are closed. The PLC locks all hatches and door 2.
Then the lock area can be entered and door 1 closed. Then access can be requested at door 2 to enter the outside area by pressing the white button of the safety switch again. Door 2 only opens when all hatches and door 1 are closed. At the same time the PLC locks all hatches and door 1, so that they cannot be opened.
Take the safety key out of the safety switch and take it with you into the outside area, thus preventing entrapment.
In case of an emergency the room can be left by pressing the emergency release on door 1. Pressing the blue push buttons resets the safety switches.
When leaving the room, the previous steps must be carried out in reverse order.