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Health and Safety, Technical Notes and Resources

Guidance on whether a change constitutes a material change to a safety case

Download Material Change Technical Note

This document provides example-based guidance as to whether a change is material. For each example,
a “default” is given of whether the change would normally be considered material on a scale of: Yes,
Likely, Possible, Unlikely, No. Factors are then given that influence the materiality of each example. The
aim of the examples is to ease the discussion between operator and regulator on whether a change is
material or not.

 

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