This article will examine in detail four of the five acceptable WAGD implementations under NFPA 99, along with some alternative ways they may be implemented. This article will not deal with passive implementations.
When selecting the right oil for Positive Displacement (PD) blowers or vacuum boosters, it’s important to consider the three primary components the oil is formulated to protect: bearings, seals and gears. Oftentimes, the best option for one of these is not the same as the best option for the others, so a choice needs to be made for the most critical component, while also accounting for the secondary ones.
Most readers of this magazine are familiar with the ISO 9000 and 14000 families of standards. The 9000 family pertains to quality management systems and the 14000 family deals with environmental management.