Typically we would not choose a diesel pump if our pump room were in a basement 
or any room where we could not get the exhaust out of the room with the 
shortest possible length of pipe.

Discharging exhaust into a parking basement would need to be approved by a 
building code official since this could pose a hazard to people who might be in 
the parking area if the pump were running.

You also need to speak to the pump manufacturer about the length of the exhaust 
because excess length affects pump performance.

The ventilation system may not be suitable for moving diesel exhaust.



Craig Prahl | Jacobs | Group Lead/SME – Fire Protection | 864.676.5252 | 
[email protected]<mailto:[email protected]> | 
www.jacobs.com<http://www.jacobs.com/>
1041 East Butler Road   Greenville, South Carolina  29606

From: Sprinklerforum <[email protected]> On Behalf 
Of Phong - Indochine Engineering
Sent: Wednesday, July 31, 2019 4:21 AM
To: [email protected]
Subject: [EXTERNAL] Engine Exhaust of a Diesel fire pump

Dear All,

I have this fire pump installed inside a pump room in a basement of a high rise 
tower. The space of basement outside the pump room is for parking.

Read 11.5 of NFPA 20:2019 and I design to select the exhaust discharge location 
just outside the pump room, and inside the parking basement. The basement have 
its dedicated auto operated ventilation system.

Is my design not wrong to NFPA? Thanks.

Regards,
Le Vu Phong
Mobile:  +84 (0) 902 363 525

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