Reclassification by Ventilation
Reclassification by Ventilation
(OP)
I believe this topic has been discussed in the forum previously..Can we reclassify an enclosed area with Ventilation? If we do not want to conduct fugitive emission studies, and we have three air changes (with detectors), is this good enough for a Zone 2 Classification as per API 505?





RE: Reclassification by Ventilation
There are a whole series of requirements for the air changes to cover reliability (installed spares ready to go), what to do if ventilation is lost, how one could restart the ventilation and the like.
Matt
RE: Reclassification by Ventilation
RE: Reclassification by Ventilation
RE: Reclassification by Ventilation
RE: Reclassification by Ventilation
RE: Reclassification by Ventilation
RE: Reclassification by Ventilation
RE: Reclassification by Ventilation
NFPA 30 Flammable and combustible liquids
A.3.3.57 Ventilation.
... sufficient to prevent accumulation of significant quantities of vapor-air mixtures in concentrations over one-fourth of the lower flammable limit (LFL).
Annex F has a calculation method and example.
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