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process safety · pipeline operations

Pipeline leak response event tree

A pipeline leak event tree follows a loss of containment through the safeguards that can limit its impact. Leak detection provides the first opportunity to respond, remote isolation can reduce the amount released, and ignition prevention separates a release from a fire outcome. The outcome rows intentionally stop when a scenario has already reached a final consequence. This makes the event tree easier to review and avoids suggesting that a later barrier can undo an earlier uncontrolled release. Operations, safety and integrity teams can use this drawing to agree on the sequence of barriers before assigning site-specific reliability data. It is a screening model, not a substitute for detailed hydraulic, dispersion or fire consequence calculations.

類型 事件樹標準 IEC 62502:2010引擎 schematex-eventtree更新時間 2026/9/24
Pipeline leak response
Drawing preview
需求

“Create an event tree for a pipeline leak with leak detection, remote isolation, and ignition prevention barriers, ending in contained release, jet fire, large release, or uncontrolled release.”

接著試試Add emergency response after remote isolation.Change the initiating leak frequency to 0.001.
這張圖裡有什麼

看懂背後的決策。

01Detection first

Alarm response must occur before remote isolation can be effective.

02Isolation second

Closing the line limits release size.

03Ignition last

Preserve an ignition branch only while material is still released.

Use for a high-level leak-response review before performing detailed dispersion or consequence modelling.

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常見問題

常見問題

What is the initiating event here?

The initiating event is a pipeline leak, expressed with a frequency before any barrier succeeds or fails.

Why is isolation after detection?

Detection identifies the event and triggers the response that allows remote isolation to close the line.

Can I add more barriers?

Yes. Add barriers such as emergency response, deluge or evacuation in the order they influence the scenario.