TUNNELLING IMPACTS | TECHNICAL
Left, figure 1:
Images showing extensive damage caused by asset failures
and maintenance records; criticality and vulnerability of the assets; as well as the potential consequence to their assets of failure. The pipeline risk assessment prepared by the
developer’s team will be reviewed by the utility engineers and their consultants in order to provide a high-level assurance to senior managers within the utility business.
Conciliation
3 COMPONENTS OF PIPELINE RISK ASSESSMENT A pipeline risk assessment is often a complex process and some of the required input information may be uncertain or unobtainable. On many occasions, an assessor will have to make certain informed assumptions in order to complete the assessment. Figure 2 shows the six key components of pipeline risk assessment and further details are summarised below: 1 Conditions (properties) of assets a. Type i Water, gas, electric, telecoms and others
b. Location i
It is important to confirm the line and level (and material) of the asset via survey and exploratory excavations because information provided on utility asset maps may not be accurate or complete. For instance, since the 2011 Transfer of Private Sewer Regulations, sewage undertakers were required to become responsible for many unmapped private sewers.
Conditions
Calculations
PIPELINE RISK ASSESSMENT
Consent
Consequences
Control
Above. figure 2: Components of pipeline risk assessment (The Six Cs’ Principles)
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