Unsafe situation definition

Unsafe situation means a situation, which has led to an unacceptable reduction in safety margin.
Unsafe situation means a situation, which has led to an unacceptable reduction in safety margin. (Definitions in GM15 Annex I and ICAO Doc 9995).
Unsafe situation means a fault or other defect with any part of the Gas Installation, that constitutes an unsafe situation according to the current version of the Gas Industry Unsafe Situations Procedures, published by the Institute of Gas Engineers and Managers;