Generally, a pipeline’s reliability includes consideration of all leak/rupture scenarios PLUS all other scenarios that could prevent the system from performing its intended function. With the normal ‘intended function’ being something like: deliver product to point B from point A at specified flow rates, pressures, temperatures, and product quality, a reliability failure occurs when any […]
Author: WKM Staff
Monetized Risk
Quantifying potential consequences with a common scale can be challenging. Using a measure such as cost—the monetized loss associated with the damages—forces some difficult judgments to be made among various receptor damages. For example, not only must a value be assigned to a statistical human life, but also to various injury types, environmental damage, damage […]
Certifications: The Leaning Tree Incident
An operator recently experienced damage to their pipeline when a metal pipeline marker post was driven into the ground by a falling tree – the ‘leaning tree incident’. This is certainly not a common pipeline failure scenario. How much criticism against a risk assessment is warranted if this obscure event is missed? CERTIFICATION With growth in both the number of […]
Test Case Information
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ID from to event attribute units notes Gas 0 1200 soil corrosivity 4 mpy Gas 1200 1400 soil corrosivity 18 mpy swamp Gas 1400 2400 soil corrosivity 4 mpy Oil 0 1200 soil corrosivity 4 mpy Oil 1200 1400 soil corrosivity 18 mpy swamp Oil 1400 2400 soil corrosivity 4 mpy HVL 0 1200 […]
Certification of Pipeline Risk Estimation Methodologies
How It Works This certification process tests a risk assessment methodology by having it produce risk estimates for three parallel pipelines for which risk-pertinent data is available. A sketch and dataset details some relevant facts for each pipeline. Many, but not all, common pipeline risk issues are illustrated or implied by the data provided. Someone […]
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Where is the Risk Control Strategy?
In an earlier article, we noted that risk management is, in effect, often unintentionally delegated to decision-makers occupying the lower portions of the corporate org chart. In many companies, the field personnel are essentially setting corporate risk levels via their choices in day-to-day activities and their perceptions of priorities. While we noted some advantages of […]
Troubles with Weightings
There is currently great disparity in approaches and level of rigor applied to risk assessment by pipeline operators. This is largely due to the absence of complete standards or guidelines covering this complex topic. The disparity leads to inconsistent and problematic risk management, as was discussed in a previous column. Most operators desire sound and […]