Ulykker på og med norske skip, samt ulykker på og med utenlandske skip i norske farvann.

Notes: 

1. SIL calculations above are only for a single component/component group. Remember that SIL requirements apply to entire functions, not individual components/component group.

2. A common cause factor (Beta) of 5% is assumed for all device types for redundant configurations (1oo2, 1oo3 and 2oo3)

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This risk calculator can be used to:

- calculate the probability of failure upon demand (PFD) for a given equipment based on available data in Norwegian Oil and Gas Guideline 070 (NOG 070) for different voting configurations

- calculate the PFD based on failure rate for your component (user entry) for different voting configurations and functional/proof test interval (user entry)

- calculate updated PFD and recommended test interval based on experienced failures for given equipment

- indicate the “SIL-capability” of the component based on the PFD; the quantitative SIL requirement.

User groups:

- functional safety engineers

- reliability engineers

- risk analysis experts

- technical safety

DISCLAIMER

This calculator is optimized for computers. Click here for mobile view.