Personnel will, from time to time, depart from the standards expected of them and adopt behaviours that are not conducive to safe operations and high performance, through incorrect use of tools, failure to use procedures, poor housekeeping, inattention to foreign material hazards, or non-compli­ance with radiological protection protocols, for example. Each time a super­visor or manager observes such behaviours and standards being diminished without correcting them, they have, by their inaction, set a new and lower standard than is desirable.

A common finding in WANO peer reviews and OSART missions is a failure by management to establish and reinforce standards and expecta­tions and a lack of presence of managers and supervisors in the field of work to provide on-going mentorship and coaching of the workforce.

Readers are referred to the WANO guideline GL2002-02, Principles for Excellence in Human Performance.