DRILLBITS
Monthly eNewsletter from the IADC




IADC Lexicon Featured Term for July 2025

The IADC Lexicon is an oil and gas dictionary of upstream-related terms, which, unlike conventional glossaries, are official definitions drawn from legislation, regulation and regulatory guidance, standards (global, national and regional), IADC guidelines, and Well Control Institute. Terms often have multiple definitions from different sources.

This month’s featured term is:

Redundancy Design Intent

High level description of systems and components distribution into redundant groups (e.g. narrative description of both the normal operation mode and the failed operation mode).

Source: Offshore Gangways, DNVGL-ST-0358, DNV GL, September 2017. Global Standards