×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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!

*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

Sprinkler Obstruction and Radiant Heating Panels

Sprinkler Obstruction and Radiant Heating Panels

Sprinkler Obstruction and Radiant Heating Panels

(OP)
Hi All,

I have two questions for a project I need some guidance on and would appreciate some help.

Firstly, We require an ESFR system for a warehouse, but there is the presence of 1.0m wide by 7m+ long radiant panels every 3-4m spacing and 2-3m below the ceiling.

What is the best method to place sprinklers within 150mm of a radiant panel due to the obstruction? It is currently unclear due to the proximity of radiated heat how best to provide sprinkler protection.
Has anyone encountered this problem before and what solution did you incorporate?

We can use a higher-temperature sprinkler head, but this may not be enough so would be great to hear some commentary.

Secondly, There is an area with an extra hazard sprinkler system using K160 sprinkler heads at approx 12m high, where there are again rectangular obstructions 1.0m in width by 4-5m in length, 2-3m below the ceiling.
I have been reading the obstruction rules for standard spray sprinklers again and again but it is still unclear to me how to deal with suspended obstructions.

For these continuous obstructions, it appears as long as it is less than 1.2m in width and more than 450mm below the sprinkler deflector, it should not require additional protection.
Again, it would be great to hear some feedback and sense check on this, and if i have interpreted this correctly.

Thanks.

RE: Sprinkler Obstruction and Radiant Heating Panels

Which brand and model ESFR will be used?

RE: Sprinkler Obstruction and Radiant Heating Panels

(OP)
One has not been chosen yet, but a K360.

RE: Sprinkler Obstruction and Radiant Heating Panels

If you are following nfpa this model refers to NFPA 13 chap 14 for obstructions, or FM 2.

That is why the brand and model is needed to see what the manufacture says.

Also I do not have 13 nearby so cannot see what chapter 14 says

RE: Sprinkler Obstruction and Radiant Heating Panels

Quote:

What is the best method to place sprinklers within 150mm of a radiant panel due to the obstruction? It is currently unclear due to the proximity of radiated heat how best to provide sprinkler protection.
Has anyone encountered this problem before and what solution did you incorporate?

Have you contacted the designer or the manufacturer of the heating radiators for recommendations such as indicative heat dissipation patterns and prevailing temperatures? For example, right next to the panel the radiation is expected minimal while convection typically does not run horizontally.

Quote:

For these continuous obstructions, it appears as long as it is less than 1.2m in width and more than 450mm below the sprinkler deflector, it should not require additional protection.

I find you statement correct. However, the limitations about obstructions per 10.2.7.2 still apply.

RE: Sprinkler Obstruction and Radiant Heating Panels

I have never heard of radiant panels that big, spaced that closely, in a storage warehouse. Are they just placed at the overhead doors on the exterior walls, or throughout the floor area?

With the metric units and NFPA references - I'm guessing this is in Canada?

RE: Sprinkler Obstruction and Radiant Heating Panels

(OP)
Hi UFT12,

I'm waiting for feedback on that one from the system designer, it seems 50 deg c will be the temperature at the unit with surrounding destratification fans.
I believe you can get high K-factor heads rated for 100 deg c, so this might be the best way if needed beneath.

Thank you.

Skdesigner, yes I would say this project is not your usual use for a warehouse and they will be across the whole floor area of the building.

Nope :), This project is in England, UK and I am having to consider all NFPA codes, United Facilities Criteria (UFC) and British Standards, which is a bit of a daunting task!!

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! Already a Member? Login



News


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close