Which AFFF stations are injection pump only?

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Study for the DC 311 Aqueous Film Forming Foam (AFFF) Transfer Station Operator Exam. Improve your knowledge with flashcards and multiple choice questions. Understand the concepts with hints and explanations. Prepare thoroughly for your certification!

Multiple Choice

Which AFFF stations are injection pump only?

Explanation:
Injection pump only stations are those that exist solely to introduce foam concentrate into the foam solution, without drawing concentrate from storage or transferring concentrate between tanks. They provide a controlled injection point into the premix line and have no suction or transfer function. In this system layout, stations 1, 2, 11, and 12 are designated as injection-pump-only, meaning they are configured to inject concentrate and do not handle suction or transfer tasks. The other station groups include additional pumps for suction or transfer or serve different roles, so they are not injection-pump-only.

Injection pump only stations are those that exist solely to introduce foam concentrate into the foam solution, without drawing concentrate from storage or transferring concentrate between tanks. They provide a controlled injection point into the premix line and have no suction or transfer function. In this system layout, stations 1, 2, 11, and 12 are designated as injection-pump-only, meaning they are configured to inject concentrate and do not handle suction or transfer tasks. The other station groups include additional pumps for suction or transfer or serve different roles, so they are not injection-pump-only.

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