Y4.04
Inadvertent-operation prevention devices
Cards in this group · 3
- Y4.04.1An extra deliberate step, like a cover or a dual action, separates a real command from an accidental brush
- Y4.04.2How hard a safeguard should be to trigger depends on the consequence, its reversibility, and how fast it's noticed
- Y4.04.3A lock or interlock's protective position needs to be actively confirmable, not just assumed