Under OSHA 29 CFR 1910.146, what defines a 'permit-required confined space'?
-
A
Any space smaller than 4 ft × 4 ft
-
B
A space that contains or has potential for a hazardous atmosphere, engulfment, or other recognized serious safety hazard
-
C
Any enclosed space requiring a ladder to enter
-
D
A space with limited lighting only