Page 22 - Xmo Strata - Bulletin Archive

7/2/2019 Page 3 of 11

Hazardous Areas – Vent Pipes

The new zones around vent pipes are shown below.

Fig 3.5 – Typical hazardous area classification around a storage tank vent pipe

Although the zones have not changed substantially, the size of the zone for a vent pipe without vapour
collection has reduced from 3m to 2m radius.

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Environmental Bulletin No 9 Zones.doc