The safety hasp or ‘multi-hasp’
is a simple device that enables
multiple maintenance
personnel to work on a
common isolated circuit or
device, safe in the knowledge
that power/energy cannot be
restored until they have
removed their personal
padlock.

The device works by fitting
it to the isolating switch in
the off position, followed by a
padlock. The hasp usually has
up to six padlock holes, meaning that
six engineers can all fit their own
padlock in place while they carry out
maintenance work on the same
isolated device, process or machine.

Energy cannot be restored until
the last engineer finishes and
removes his/her padlock.

The new stainless steel hasp from
Masterlock, available from Total
Lockout, is manufactured entirely
from 316 stainless steel, making it
highly resistant to corrosion in
marine environments or
applications where chemicals are
used. In addition it has eight
padlock holes, providing greater
capacity for additional engineers
working on the same equipment.