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Describe how InfoWorks WS Pro’s critical link analysis allows automated testing and reporting of a selection of links.
Type:
Tutorial
Length:
5 min.
Transcript
00:03
The critical link analysis, or CLA, run type in InfoWorks WS Pro
00:08
allows automated testing and reporting of the effects of failure on a selection of links.
00:13
The selection of links and time of outage is user-specified.
00:17
Failure counts are then reported for each pipe;
00:20
these can be number of properties, connections, nodes, or customer point.
00:25
The criticality grade and criticality count can be updated within the network.
00:30
CLA exercises are important in aiding resilience and determining where to target investment
00:35
as to the number of customers affected if each pipe had to be isolated to fix a burst.
00:40
Additionally, CLA results can give justification for strategic and expensive mains rehab schemes,
00:46
and it can highlight areas where parallel pipes would be necessary instead of one large pipe or abandoning and rationalizing pipe work.
00:54
A simulation is run either for each selected link, or for each isolation area in the selection, in turn.
01:01
When running simulations for isolation areas, the selected link is checked for Isolation Area codes.
01:08
For each Isolation Area code that is found, a simulation is run, and all links with the same code are closed at the same time.
01:16
This is regardless of whether the link is present in the selection.
01:21
Network nodes are tested against user-defined Level of Service Criteria.
01:26
By default, simulation results will be saved for each case
01:29
in which link failure results in failure of nodes in the network to meet the Level of Service Criteria.
01:36
The results can be viewed as Full Play results on the GeoPlan and as a Service Level Report.
01:42
The saved results can then be used to update the criticality fields of network pipes.
01:46
The criticality grade and criticality count values for the affected pipes provide an indication of the significance of the effect on the network,
01:54
should any of the links fail.
01:56
Alternatively, the criticality fields of each link being analyzed can be updated at the end of the simulation for that link,
02:03
and the simulation results can be discarded.
02:06
This option is useful when running Critical Link Analysis on many pipes, as problems due to limited storage for results files are eliminated.
02:15
To use this option, in the Critical Link Analysis Options dialog, check the box for Update Criticality Only.
02:22
But be aware that this option can only be used with a checked-out network.
Video transcript
00:03
The critical link analysis, or CLA, run type in InfoWorks WS Pro
00:08
allows automated testing and reporting of the effects of failure on a selection of links.
00:13
The selection of links and time of outage is user-specified.
00:17
Failure counts are then reported for each pipe;
00:20
these can be number of properties, connections, nodes, or customer point.
00:25
The criticality grade and criticality count can be updated within the network.
00:30
CLA exercises are important in aiding resilience and determining where to target investment
00:35
as to the number of customers affected if each pipe had to be isolated to fix a burst.
00:40
Additionally, CLA results can give justification for strategic and expensive mains rehab schemes,
00:46
and it can highlight areas where parallel pipes would be necessary instead of one large pipe or abandoning and rationalizing pipe work.
00:54
A simulation is run either for each selected link, or for each isolation area in the selection, in turn.
01:01
When running simulations for isolation areas, the selected link is checked for Isolation Area codes.
01:08
For each Isolation Area code that is found, a simulation is run, and all links with the same code are closed at the same time.
01:16
This is regardless of whether the link is present in the selection.
01:21
Network nodes are tested against user-defined Level of Service Criteria.
01:26
By default, simulation results will be saved for each case
01:29
in which link failure results in failure of nodes in the network to meet the Level of Service Criteria.
01:36
The results can be viewed as Full Play results on the GeoPlan and as a Service Level Report.
01:42
The saved results can then be used to update the criticality fields of network pipes.
01:46
The criticality grade and criticality count values for the affected pipes provide an indication of the significance of the effect on the network,
01:54
should any of the links fail.
01:56
Alternatively, the criticality fields of each link being analyzed can be updated at the end of the simulation for that link,
02:03
and the simulation results can be discarded.
02:06
This option is useful when running Critical Link Analysis on many pipes, as problems due to limited storage for results files are eliminated.
02:15
To use this option, in the Critical Link Analysis Options dialog, check the box for Update Criticality Only.
02:22
But be aware that this option can only be used with a checked-out network.
The critical link analysis, or CLA, run type in InfoWorks WS Pro is:
CLA exercises are important because:
A simulation is run either for:
Network nodes are:
Alternatively, the criticality fields of each link being analyzed can:
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