How to manage temporary works in construction - Book - Page 116
5.2 Implementation risk classification
Example of a structure in situ
Risk
level
Risk
description
Minor structures
High levels of
Who can issue
the permit?
TWS
TWC
PC
TWC
After
robustness
Very
installation
Before first
Low
experienced
Fencing Cat 0*
workforce
Failure entirely
How
frequently
should the
structure be
inspected?
Yes
Yes
Yes
use
Intervals not
‘in site’ of low
exceeding 7-
impact
days
Inconvenient
As per ITP
but injury
unlikely
Relatively
experienced
workforce
After
Failure would be
installation
Medium
major
potentially fatal
No
Yes
Yes
or significant
Edge Protection Cat 0*
use
Bi-weekly
loss
Before first
As per ITP
Would not cause
a secondary
chain reaction
Complex
interfaces where
items impact on
each other
After
Inexperienced
installation
High
workforce,
unfamiliar
No
No
processes or
equipment**
Scaffolding Cat 0*
Catastrophic
Yes
Before first
use
Possibly daily
As per ITP
failure that
might cause a
chain reaction
*The
implementation
risk
classification does not relate to the
design check category.
116
**Inexperienced teams, unfamiliar with processes or
new equipment would be deemed high risk works no
matter where the structure is located.
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