The Chief Joseph Dam CO2 Fire Suppression System Modernization project involved modernization of the existing Hydroelectric Generator CO2 Fire Suppression System with new components on the 27 powerhouse generators, along with a nitrogen driven fine water mist system to protect the generator oil storage room, oil purification room and service station transformer room.
Project scope:
1. Modernization of existing CO2 fire suppression system in accordance with NFPA 12
Replaced 295 high pressure CO2 tanks
Installation of eight fire suppression control panels
2. Installation of new, self-contained fine water mist fire suppression system in accordance with NFPA 750
Marioff GSU pump system
Requires 82 high pressure nitrogen tanks
Includes 5,800 gal water storage tank for fire suppression
3. Installation of 4 new automated fire doors
Fire door closure is initiated from local heat sensing thermal-link or from a remote signal received from the fire control panel
Quality key points:
Knight’s past experience and knowledge with hydroelectric power generation and related fire suppression systems was instrumental in resolving challenges with integrating the new suppression system controls into the existing system on the generators during this project. The project schedule was maintained despite experiencing the COVID-19 pandemic and a severe wildland fire that resulted in a work stoppage.