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4-2.2 Sampling - Cont'd .
2.
Place the sample bottle (or other container) under the gooseneck of the sampler.
3.
Open the ball valve (Item 4, Fig. 2-22) first.
4.
Take sample by throttling through the needle valve (Item 14, Fig. 2-22).
5.
When sample has been taken, close the needle valve and then the ball valve.
6.
Clean up any spilled fuel.
c.
To take a sample from the water detector kit adapter downstream of the filter separators, remove the cap on the
probe assembly and install the connector furnished with the test kit. Draw the sample in accordance with the instructions
furnished with the test kit.
d.
To draw a sample from the discharge vent of a hoseline pump, use extreme caution.
1.
Reduce the discharge pressure to a minimum and still maintain flow from the tank.
2.
Place a container under the vent hose and open the petcock to remove any air accumulated.
3.
When flow without air is obtained, close the petcock and insert vent hose in neck of sample bottle.
4.
Open the petcock and fill bottle.
5.
Close petcock, clean up, and dispose of fuel in the container used in step 2.
WARNING
Use extreme care when taking a sample from the hoseline pump discharge vent. Avoid
contact with hot engine parts. Avoid getting any fuel on hot engine parts. Have a fire
extinguisher handy.
e.
When taking a sample from a tank bottom drain, it is necessary to get inside the tank berm.
1.
Place a container under the tank bottom drain valve. Open valve and draw off sufficient fuel to make sure the
drain hose has been flushed.
2.
Close valve.
3.
Place sample container under the valve and open the valve partially to fill the sample container slowly. When
filled, close drain valve.
4.
Dispose of the fuel drawn off under step 1.
4-4
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