To enhance safety for service specialists, the new prerequisite for crisis lights on the vehicle roof has become five lux for a single hour. The new requirements for shaft lights are as follows: Determine 1: Exhaust Ventilation Procedure (DOE) Exhaust ventilation systems get the job done by depressurizing a construction. https://ventilationsystems56788.blogdemls.com/28034290/examine-this-report-on-lift-shaft-ventilation