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Setting up Lining Conditions

An asset’s lining delays the date when the asset’s degradation starts. The calculation used to determine the asset’s end of life uses the lining’s end date in place of the asset’s degradation start date. That is, asset degradation begins when the lining no longer protects it.
The lining’s remaining life is tracked using the life adjustment factor, which is a portion of the lining’s by-design life span, for example, one tenth of its original estimated life. The factor is used to estimate the lining’s remaining life based on its condition at the time of inspection. The life adjustment factor can be set manually, or it can be determined using a confidence evaluation during strategy development analysis.
The condition of the lining at the time of inspection can apply a life adjustment factor to the asset, modifying the lining’s remaining life and the end of life date.
This topic explains how to add new lining conditions.
1.
On the site’s Strategy Development view, select the Settings tab. Select the Confidence tab and the Confidence Analysis Settings node in the tree.
Tip: You can also select the site’s Administration menu, Strategy Development Settings, Risk Analysis, and then Confidence. The Strategy Development – Confidence Analysis Settings dialog appears.
On the Confidence tab, select the Lining Conditions tab.
2.
Click New. The Lining Condition Properties dialog appears.
3.
Provide the following information:
Setting Name
Description
Lining condition
Brief descriptive name of the condition.
Description
Characteristics of the lining condition, for example, “Lining is in like-new condition with no repairs necessary”.
Adjustment description
Description of the life adjustment factor. For example, “Use original life estimate for lining life or results of lining confidence evaluation, whichever is less”.
Adjustment factor
A life adjustment factor is a portion of an asset’s by-design life span, for example, one tenth of its original estimated life. The adjustment factor is used to estimate the asset lining’s remaining life based on its condition at the time of inspection. This information is used to track the asset’s degradation.
The maximum value is 1.0. For example, a factor of 0.5 represents half the lining life.
Lining confidence analysis supported
When this option is selected, the lining’s remaining life is based on the lesser of two values: the inspector’s assessment of lining condition or the results of lining confidence evaluation performed in strategy development analysis.
4.
Click OK. The dialog closes and the condition is added to the tab.
Tip: You can mark a condition as inactive until it is ready to be used. On the Lining Conditions tab, select the condition in the table and click Mark as Inactive. The Mark as Inactive window appears, where you can enter a comment. When you click OK, a confirmation message appears. Click OK. The condition’s Active Status in the table is shown as “Inactive”. When you are ready, click Mark as Active to make the condition available.