The Hazardous Facility Screening Procedure training manual.
Table 3.2 Adjustment factors
| Fire/ Explosion | Human Health | Environment |
|---|---|---|
| FF1: Substance form | FH1: Substance form | FE1: Substance form |
| Solid = 1 Liquid, powder = 1 Gas (101.3 kPa, 20°C) = 0.1 |
Solid = 3 Liquid, powder = 1 Gas (101.3 kPa, 20°C) = 0.1 |
Solid = 3 Liquid, powder = 1 Gas (101.3 kPa, 20°C) = 0.1 |
| FF2: Separation distance from site boundary (sub-facility) | FH2: Separation distance from site boundary (sub-facility) (Gases only) |
FE2: Environmental sensitivity |
| < 30 m = 1 > 30 m(>60m)1 = 3 |
< 30 m = 1 > 30 m(>60m)2 = 3 |
Normal = 1 Adjacent to water resource2 = 0.3 |
| FF3: Type of activity | FH3: Type of activity |
FE3: Type of activity |
| Use = 0.3 Above ground storage = 1 Underground storage3 = 10 |
Use = 0.3 Above ground storage = 1 Underground storage3 = 10 |
Use = 0.3 Above ground storage = 1 Underground storage3 = 3 |
| Final Fire/Explosion Adjustment Factor FF = FF1 x FF2 x FF3 |
Final Human Health Adjustment Factor FH = FH1 x FH2 x FH3 |
Final Environment Adjustment Factor FE = FE1 x FE2 x FE3 |
Footnotes
1. If the facility is assessed as a sub-facility, the distance to the neighbouring sub-facility must be more than 60 metres (ie, 2 x 30 metres) to qualify for an Adjustment Factor of 3 (refer Section 5.5.4 of the main document).
2. Water resources include aquifers and water supplies, streams, springs, lakes, wetlands, estuaries and the sea, but do not include entry points to the stormwater drainage network. ‘Adjacent’ must be defined in respective district plans and will depend on the type of water resource potentially affected (adjacent is variably defined as between 30 and 100 metres).
3. Applicable to UN Class 3 substances (flammable liquids) only.
1. If the facility is assessed as a sub-facility, the distance to the neighbouring sub-facility must be more than 60 metres (ie, 2 x 30 metres) to qualify for an Adjustment Factor of 3 (refer Section 5.5.4 of the main document).
2. Water resources include aquifers and water supplies, streams, springs, lakes, wetlands, estuaries and the sea, but do not include entry points to the stormwater drainage network. ‘Adjacent’ must be defined in respective district plans and will depend on the type of water resource potentially affected (adjacent is variably defined as between 30 and 100 metres).
3. Applicable to UN Class 3 substances (flammable liquids) only.
