Procedural Guide - Book - Page 85
5.1 IMPLEMENTATION RISK
5.1.4
Risks associated with the building, use and dismantling derive from the ‘Execution
Risk’. The following table provides examples. These are ‘general risks’ that will need
to be controlled relating to ANY structure.
Execution
Risk (ER)
term used
Workmanship
Materials
Experience
Manner of use
Worst case scenario,
i.e., the hazard
Risk no
control
Poor workmanship by
operatives
Poor quality materials
or unserviceable
components being
incorporated into the
build
Inexperienced
workforce who are
unfamiliar with
processes and/or
equipment
Equipment being
overloaded, going
beyond its limitations,
or misused when in
use
High
High
Risk
with
control
Possible controls
People selection (skills),
quality checks during
installation (hold points),
ITP, supervision
Procure from certified
source, check prior to
installation, correct storage,
evidence of maintenance
before use, supervision
Low
Low
High
People selection
(experience), person
assessment, appointment
process, supervision
Low
High
Briefing users, signage,
loading zones, monitoring,
authorisation systems
(permits), supervision
Low
5.1.5
Implementation risks can also derive from where the structure is located, and who or
what could be affected by collapse or failure. This is referred to as ‘the consequence
of failure’ which is a ‘variable risk’.
5.1.6
The implementation risk classification is a combination of the execution risk (general
risks) + the consequence of failure (variable risk) = implementation risk
classification. The TWC is responsible for classifying the temporary works and
ensuring appropriate controls are implemented.
5.1.7
The table below identifies the risk levels that relate to the implementation
classification shown in table 1. This will then determine the additional controls
will need to be incorporated into the risk assessment and method statement,
implementation plan, to be submitted for review prior to commencing
implementation (build and dismantling) phase of the temporary works.
risk
that
and
the
Risk Level
Risk Classification
Experience of
workforce?
Likelihood of injury or
fatality?
Likelihood of chain
reaction?
VERY LOW
Highly experienced
Unlikely
None
LOW
Highly experienced
Unlikely but possible
None
MEDIUM
Reasonably experienced
Likely
None
HIGH
Little or no experience
Highly likely
Highly likely
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