RELIABILITY OF THE PROSAFE RANGE IS ENSURED
15 July 2002 - EJA

Inbuilt reliability of the Prosafe range is ensured by the use of s/s direct acting and linked (positive mode) mechanical components. The turning of the key is transmitted to the locking action of the bolt via rigid members. It does not rely on springs or ball bearings, which could fail and lead to a dangerous condition.

The device can only fail if its components break or become distorted. That situation is prevented by the 'over-engineering' and high specification of the components and materials so that they can stand up to all the foreseeable forces with a considerable safety margin. This approach is adopted by most manufacturers of trapped key interlocks and results in a device with an extremely low probability of failure.

Some devices such as Prosafe take the measures one step further however. The key features a specially designed section which will shear at a force much higher than that required for normal (or even abnormal) operation but much lower than that required to damage the lock. In addition, unlike any other interlock on the market Prosafe interlocks have the facility for individual code barrels to be replaced, rather than the complete interlock. This means that new keys can be introduced into the system quickly should the original ones be lost, and there is no need to keep a complete set of spare keys.

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  • For July 2002
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