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Protection for Goonhilly staff
March 1st 2007

Trapped-key interlocking systems from Castell are used to ensure the safety of maintenance workers at BT Goonhilly International Communication Centre in Cornwall.

The site comprises more than 60 operational and developmental antennae, and each is fitted with Castell products either during construction or as a retrofit, to protect personnel from mechanical and radio frequency (RF) hazards.

Jason Hambly, satcomms and subsea engineer, comments "Castell provides us with a system of key hierarchy which allows us to operate our permit-to-work system.

This provides a safe system of work which can be designed around our equipment." Whenever a technician wants to carry out work on an antenna or associated system, and upon completion of a permit-to-work, the operational control area duty engineer switches the antenna to standby, releasing an authority key.

The antenna systems-nominated person then uses this authority key to isolate the drives. This action releases keys for the area to be worked on; the permit requires that the technician signs for the desired key.

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