Thread Rating:
  • 3 Vote(s) - 4 Average
  • 1
  • 2
  • 3
  • 4
  • 5
VESDA Maximum Height
#1
Is there a maximum height at which horizontally arranged VESDA tubes can be installed

I have come across a 14m high installation in a very high value 4000m2 vehicle storage garage/warehouse. The VESDA tube inlets are around 12m above the cars and set flat on the underside of the slightly pitched roof

My concerns are 
  • the 12m gap may create an untenable time delay prior to discovery, not withstanding the air sampling nature of this kit
  • smoke stratification may prevent or delay the smoke reaching the VESDA air flow

Is this a problem or am I overthinking this issue?
Reply
#2
(06-11-2019, 06:19 PM)Messy Wrote: Is there a maximum height at which horizontally arranged VESDA tubes can be installed

I have come across a 14m high installation in a very high value 4000m2 vehicle storage garage/warehouse. The VESDA tube inlets are around 12m above the cars and set flat on the underside of the slightly pitched roof

My concerns are 
  • the 12m gap may create an untenable time delay prior to discovery, not withstanding the air sampling nature of this kit
  • smoke stratification may prevent or delay the smoke reaching the VESDA air flow

Is this a problem or am I overthinking this issue?


I thought it was about 40m top of my head
Reply
#3
   
Reply
#4
Blimey

That was quick. Thank you so much for the info

Zenengineering - can you tell me where that table comes from please?
Reply
#5
Sure its 22.7 of 5839-1 (Table 3)
Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  VESDA VLP Error AWOLB7 9 3,320 12-06-2018, 06:53 AM
Last Post: AWOLB7
  VESDA HLI Lead AWOLB7 7 2,391 12-12-2017, 07:53 PM
Last Post: AWOLB7
  low output vesda fault from vesda panel sammyunique 10 8,393 22-01-2017, 02:06 PM
Last Post: SergeTL
  Smoke Exiting VESDA Sampling Point Buggy 10 5,741 24-12-2016, 12:42 PM
Last Post: Big Smoke
  vesda airflow alonso 15 9,242 10-11-2016, 09:21 PM
Last Post: Monkeh
  new vesda. northernmonkey 1 1,988 26-06-2014, 09:10 PM
Last Post: douglas docherty
  Vesda Smoke Tresholds clarkson 6 5,405 20-02-2014, 10:29 AM
Last Post: Jones
  Installation Height? DutyDogsBody 8 4,518 18-02-2014, 06:00 PM
Last Post: ESP
  Vesda clarkson 5 5,971 11-09-2013, 09:35 PM
Last Post: MW63
  Vesda Airflow Faults clarkson 9 19,389 27-06-2013, 10:33 PM
Last Post: Allen Higginson

Forum Jump:


Users browsing this thread: 1 Guest(s)