UFC 4-150-02
12 May 2003
Table 3-1 Diversity Factors (DF) for Steam Usage1
Outdoor
Diversity Factor (DF)2 for:
Temperature
Ship Type
Range
1
3
5
9
(degrees F)
Ship
Ships
Ships
Ships
Surface Combatants
0 - 20
1
0.97
0.96
0.94
20 - 40
1
0.93
0.89
0.86
40 - 60
1
0.86
0.80
0.76
> 60
1
0.80
0.73
0.68
Aircraft Carriers
0 - 20
1
0.97
0.96
0.95
20 - 40
1
0.96
0.94
0.91
40 - 60
1
0.93
0.90
0.86
> 60
1
0.82
0.76
0.74
Amphibious
0 - 20
1
0.95
0.96
0.95
20 - 40
1
0.87
0.94
0.91
40 - 60
1
0.80
0.90
0.86
> 60
1
0.78
0.76
0.74
Auxiliary
0 - 60
1
0.91
0.87
0.84
Aggregate
0 - 20
1
0.96
0.93
0.92
20 - 40
1
0.93
0.90
0.88
40 - 60
1
0.90
0.86
0.83
> 60
1
0.86
0.81
0.78
1.
Use of Diversity Factors (DF):
If the total number of ships in aggregate is greater than nine:
- Group the ships by types.
- Determine the maximum demand of each ship from the utility data. (See Part A.)
- Sum the individual demands within each type of ship.
- Multiply the total demand of each ship type by the appropriate DF, relative to the
number of ships and temperature range.
- Total the demands obtained for the different ship type groups.
If the total number of ships in aggregate is nine or less:
- Determine the maximum demand for each ship from the utility data.
- Sum the individual demands of each ship.
- Obtain the aggregate DF from Table 3-1.
- Multiply the total demand by the "aggregate" DF in Table 3-1.
2. Linear interpolation is permissible for actual ship quantities.
3-2
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