Standard Test Method for Determination of Deposition of Aerially Applied Oil Spill Dispersants

Importancia y uso:

3.1 The deposition of an aerially applied dispersant is defined as the amount of an aerially applied dispersant that contacts the surface; whereas, application dosage (frequently referred to as application rate) is the amount of material that is released per unit area by the delivery system. The units of deposition are litres per hectare or U.S. gallons per acre. The deposition may differ from the application dosage (volume of material per unit area) for many reasons, such as, the effects of wind on the spray and the evaporation of the dispersant after it has been released from the aircraft.

3.2 This test method describes the measurement of the ability of a spray system to deposit a dispersant on oil. It is not intended that this test method be used at the time of a spill. These techniques are intended to determine the equipment performance during the development of new systems and after the repair or significant modification of a system.

3.3 The data obtained from the use of this test method can be directly related to the deposition of dispersant on an oil slick, and thus can serve to determine both the dispersant deposition and the drop size.

3.4 Surrogate deposition and drop size data can be used as a technical basis for the optimization of dispersant application equipment and its use.

3.5 The choice of a dispersant surrogate may vary, typically water is chosen along with a marker dye.

Subcomité:

F20.13

Referida por:

F2465_F2465M-24, F1737_F1737M-23, F1413_F1413M-18R22

Volúmen:

11.08

Número ICS:

13.060.10 (Water of natural resources)

Palabras clave:

dispersant deposition; dispersant deposition measurement; spray deposition measurement;