We're designing a fire sprinkler system for plastic (Group A material, unexpanded polyethylene) recycling site. We are designing only for the depot area. There are raw materials stored as solid blocks up to ...We've raw material stored as solid blocks up to 12 feet (3.6 meters).
I am thinking this should be considered rack storage under NFPA 13 Section 16.2.1.2 (2016 Edition) for Protection Criteria for Rack Storage of Class I Through Class IV Commodities Stored Up to 12-ft (3.7m) in Height. Am I wrong considering this? Note that compacted material will have a lower combustion propagation velocity than generic goods. Any ideas? Thanks in advance. Submitted anonymously and posted for discussion. Discuss This | Submit Your Question | Subscribe
3 Comments
Franck
7/29/2020 12:24:11 pm
Is it really stored in rack or more like a compact pile storage ?
Reply
Pete D.
7/29/2020 04:22:08 pm
Franck has identified the appropriate area of the standard correctly. Something important to consider and frequently missed that will apply if pick up other areas of the contract such as the sort- Empty plastic containers are considered expanded plastic despite being made from unexpanded plastic Due to them being empty (full of air) the burn properties are nearly the same as foam. If you compress and bind them into blocks or process (melt) them into blocks they become unexpanded again. You described solid piled unexpanded plastic.
Reply
PETER
7/30/2020 01:49:10 am
It's a compact pile storage, 3 solid blocks putted one on the top of each other to a maximum height of 3,6m (12ft).
Reply
Leave a Reply. |
Free SignupSubscribe and learn something new each day:
CommunityThank You to Our Top
February '21 Contributors!
Your PostThe ToolkitSprinkler Designer or Engineer?
Get all of our tools, including the Sprinkler Database, Friction Loss Calculator, Fire Pump Analyzer and more: Filters
All
Archives
March 2021
Daily
Daily discussions are open-ended fire protection, fire alarm, and life safety questions submitted anonymously for the benefit of sharing expertise and learning from other perspectives. Anyone can submit a question here:
Exam Prep2020 PE Prep Guide
(Available Now!) PE Prep Series
(Available Now!) 2020 PE Prep Series
Current Leaderboard (Click to enlarge) PE Problems
Visit July-October for daily Fire Protection PE Exam sample questions.
Solutions are posted the day after posting. Comment with your solutions, questions or clarifications. Please note that questions posted are unofficial and in accordance with NCEES rules are intended to be similar to actual exam questions, not actual exam questions themselves. |