Regarding fire sprinkler system flushing of a wet-pipe gridded system; NFPA 13 Section 16.6.4 “All branch lines on gridded systems shall be arranged to facilitate flushing”.
We are doing a project which has more than 50 branches in a gridded system.
Do all these branch lines need to be provided with a flushing capability? How is this commonly achieved?
FM Global data sheets say to provide a small nipple between two flexible couplings, assuming removal of the nipple to flush the lines. Are there alternatives to this?
Sent in anonymously for discussion. Discuss This | Submit Your Question | Subscribe
Subscribe and learn something new each day:
Thank You to Our Top
February '21 Contributors!
Sprinkler Designer or Engineer?
Get all of our tools, including the Sprinkler Database, Friction Loss Calculator, Fire Pump Analyzer and more:
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:
2020 PE Prep Guide
PE Prep Series
2020 PE Prep Series
(Click to enlarge)
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.