×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Abort switches in CO2 systems

Abort switches in CO2 systems

Abort switches in CO2 systems

(OP)
Hi guys,

NFPA 12 4.5.4.11 Abort switches shall not be used on carbon dioxide systems.

Can someone explain to me why?

RE: Abort switches in CO2 systems

Most likely because two distinct alarm signals will be initiated before the CO2 system discharges:

1) Activation of the occupant notification devices upon operation of the initiating device
2) A separate and distinct pre-discharge alarm before CO2 is released

RE: Abort switches in CO2 systems

I would say it's likely because CO2 is deadly, and you don't want someone going into or staying in an area where a CO2 system has activated to hold the abort station.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources