Long-term Envelope

Definition(s)


Long-term Envelope

Envelope that defines the stress levels that are just below those that can potentially cause irreversible damage during continuous or occasional loading conditions at a specified temperature.

Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global Standards