Determining Fuel Requirements. There are two ways to estimate fuel requirements--with historical on-site records and logs
or by equipment data specifications.
Using historical data, you would rely on the daily water reports; for example, over the past two days your daily fuel
consumption for ROWPU #2 was 20 gallons for 10 hours of operation, or 2 gallons average per one hour. Divide the amount
of fuel on hand (15 gallons) by the average consumption per hour (2 gallons). The result is 7.5 hours of operation, which is
how long you can operate on 15 gallons of fuel for this particular ROWPU. If you had to add 40 hours of operation to this
ROWPU, you know you will need (2 gal x 40 hr =) 80 gallons of fuel. It is by monitoring such consumption fuel factors
through the records that you will know when refueling requests are required.
In situations where historical data for fuel are not available, you must calculate consumption of fuel by using the
specifications for the equipment in use (Table 1-2).
Table 1-2. Equipment data specifications
Determining Supply Requirements. There are two ways to determine other supply requirements: one is historical, and the
other is using the 3,000-GPH ROWPU Consumables Table (Table 1-3).
Historical data are always preferred provided accurate records are kept. The review of past production logs and the
continuous operation of the equipment that those logs represent are the most accurate method. This is true for other supplies
as well as for fuel.
In the case, however, where you do not have such a record, you will need the 3,000-GPH ROWPU Consumables Table
(Table 1-3) to determine the requirements other than fuel supply for five days operation of a ROWPU.
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