Trapped key interlocks

Baosteel, the largest steel
manufacturer in China, is entrusting
the safety of personnel at its Shanghai
plant to trapped key interlocking
systems from Castell.
Many steel plants in China still rely
on warning signs to remind
employees of recommended
operating procedures. However, this
method is prone to abuse, with
potentially disastrous consequences.

Castell’s products are being used to
ensure that Baosteel’s electrostatic
plating process is carried out safely.

The three interlocking systems
eliminate the risk of personnel
ignoring safety procedures and
putting themselves in danger, by
forcing operatives to strictly follow a
predetermined series of steps based
on the transmission of keys.