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Given the HFC (hydrofluorocarbon) production phase-out, what are you currently recommending to your clients and customers regarding the installation of new FM-200 systems at this time?
Just curious to get a status check on how you approach this challenge. Thanks in advance. Sent in anonymously for discussion. Click Title to View | Submit Your Question | Subscribe
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I am working on a project that is manufacturing lithium-metal batteries (not lithium-ion). There are multiple areas throughout the manufacturing process where there is a risk of exposed lithium metal.
With lithium being water reactive, any water based system is not an option. Are there any known alternative fire suppression systems listed and approved for use on a lithium fire? I know that per a couple of different NFPA codes that clean agent and dry-chemical systems are not recommended for use on lithium fires. From what I can find there are just manual fire extinguishers (such and ANSUL's lith-x) for use on lithium fires. Any input would be greatly appreciated. Thanks in advance. Sent in anonymously for discussion. Click Title to View | Submit Your Question | Subscribe We are designing a clean agent system for electrical rooms located within a high-rise building. We are proposing having dedicated clean agent releasing control panels for the electrical rooms, and a separate building Fire Alarm Control Panel.
Is it mandatory to connect fire/smoke dampers (and other shutdown devices) in the electrical room with the clean agent releasing panel, or can these be connected to the building fire alarm system? Thanks in advance. Sent in anonymously for discussion. Discuss This | Submit Your Question | Subscribe Our common CRAC Units (Cooling, Refrigeration and A/C) for data centers only cool the air directly from the data center and back into the data center.
Do these need to be shutdown with the use of a total-flooding clean agent system? If the CRAC unit is only exchanging air within the same space then I'm not sure what harm it would do if it's running during or after clean agent discharge. I'm curious if I'm off the mark here, thanks! Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe NFPA 2001 requires a safety factor under sections 5.4.2.3 through 5.4.2.5 for clean agent extinguishing concentrations.
What is the difference between the "design concentration" listed in Table A.5.4.2.2(b) (2015 edition) and this minimum extinguishing concentration (the minimum extinguishing concentration MEC x applied safety factor)? In some cases the design concentrations are higher than the MEC x safety factor - is there a proper one to be using under NFPA 2001? Sorry if the question is basic - I've always just used the design concentrations. Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe |
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