When fire pumps are used for other than...

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Question 1 of 205eccef9ebacbc34ba4d463e3

When fire pumps are used for other than firefighting services, each pipe connecting the other service (except for branch lines used for deck washing) must have which item to be incompliance with regulations?

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🔍 Key Concepts

• Fire main system requirements in 46 CFR for using fire pumps/lines for non‑firefighting services • Purpose of fittings that prevent loss of pressure or flow in the fire main when another service line fails • Difference between isolation, backflow prevention, and pressure control devices

💭 Think About

• Ask yourself: If a non‑fire service line connected to the fire pump were to burst, what specific type of fitting would regulations rely on to keep the fire main effective for firefighting? • Which option is explicitly about preventing unintended flow direction versus simply turning flow on/off or changing pressure? • Which devices in the choices are mainly for convenience or pressure management, rather than for protecting the integrity of the fire main system under casualty conditions?

✅ Before You Answer

• Check 46 CFR sections on fire main and fire pump arrangements and see what is required when fire pumps serve additional services. • Verify which of the listed devices is specifically defined as a backflow prevention fitting rather than just a shutoff or pressure‑setting device. • Eliminate any option that only deals with pressure limits or ease of disconnecting and does not directly address protecting the fire main if another connected system fails.

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