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Solutions for Suction Entrapment


Solutions for Suction Entrapment

Solutions for Suction Entrapment - Practical Application for Construction and Maintenance

Members: 105
Latest Activity: Jan 10, 2018

Solutions For Suction Entrapment

The "Video Notes" for the VGB and Suction Entrapment seminar given by Ray Cronise, Steve Barnes, and Steven Getzoff. Click the links below to watch the video training sessions.
Solutions for Suction Entrapment Video Part 1
Solutions for Suction Entrapment Video Part 2
Solutions for Suction Entrapment Video Part 3
Interview with Shajee Siddiqui - Jandy Product Developer - On the VGBA
QuickTime Player - Download Free Player Here!

Legal Solution Discussions with Pool Genius Advisor, Steve Getzoff

Comment Wall


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Comment by Norman Tyree on May 20, 2011 at 4:00pm

ENTRAPMENT, what a word I was blown away with all the effort made by all the players in the Industry to cash in on the market with a large display of fancy Grates at the last NSPI show I attended in Vegas which really were just like buying a new lid for an old pot.

OK so lets have 2 Drains great idea but it is not impossible for 2 children to go and sit on both of them Wendy Purser said why double the chance she is right.

The best solution was to fit the Anti Hair Snare grating of all the designs I have seen this is the safest  of the lot. So retro fitting it to a drain my solve the problem. Another point is that if there is a single drain and it has a Hydrostatic Valve installed in the bottom  it can provide a form of Vacuum Relief in the advent of a person becoming entrapped  however Hair is still a problem with many grating Triodyne Anti Hair Snare solves this problem as well as preventing body entrapment.

If you are still concerned convert the Bottom Drain to a Return and get the added benefit if the pool is being heated with aprox 30% more efficiency with the heating. 

Another thing is that whatever you do there is always a risk with older pools take the 7 year old in a Club Med in Grease or recently the 42 year old in the Bahamas not only kids play around any point of suction so do adults, Maybe the risk will never be eliminated but just reduced on new installations over time.

Comment by Wendy Purser on April 6, 2011 at 4:38pm
Suction entrapment VS Entrapment....Missing or broken cover that contributes to dangerous/deadly entrapment happens more often than suction entrapment so why did we double the chance by installing 2 drains instead of just getting rid of them?  Also, entrapment detection is how we can survey to eliminate the chance of a dangerous/deadly situation.  There are many forms of entrapment that need to be surveyed for in a pool.   Elimination of the drain is the best answer to removing a situation for suction entrapment and limb entrapment.  Although 1.5 ft. of my intestine being sucked out is much more grotesque than my foot getting stuck and me drowning, it would make me pay attention to not sit on a drain.  But the end result is that limb entrapment could cause death more often.  I can document many cases as can the local health department on SVRS failure, but even if it did work in 3 seconds that's 4.5 feet of my insides now on the outside (not considering the "water hammer" effect that could occur).   We have to use common sense. I think SVRS use is just an "effort" to show concern where as with experience we see better ways of real prevention.  Also, we don't know how much of the attention of VGBA has just made awareness contribute to less events.
Comment by Scott Heusser on April 6, 2011 at 1:42pm
Ray, why would entrapment detection need to be part of the standard?  Isnt that something better left for the standards that apply to SVRS, vents, etc?   I guess the detection of entrapment is important to establish the start of the test.  I can see some agencies sliding the starting point around to best suit their product.  Maybe I should think things through before I ask the question.
Comment by Rick Larson on April 6, 2011 at 1:23pm

I'm glad up here we have to use minimum dual main drains each of which has to be able take 100% of the flow at no more than 1.5 ft/sec. We also are supposed to set it up so the skimmers take about 60%-70% of the flow. And these rules will soon be applied to residential but I think a lot of builders do it already.


Problem is with the VGB act we have no more flat drain covers and are starting to see trip hazards and toe stubbers appearing. We will end up with problems now whereas before we didn't really have any.

Comment by Wendy Purser on April 6, 2011 at 12:41pm
I'm glad that I don't have to install any submerged suction anymore in NC and that I didn't for the past 8 years or so in residential pools!
Comment by Ray Cronise on April 6, 2011 at 6:58am
I didn't attend. Just wait until everyone fully realizes that SVRS standard does not test for entrapment detection - only release. The standard completely ignores the presence of multiple sources of water. It only tests a single outlet and then the resulting water hammer is a signal spike about 100 times greater than the force listed as a dangerous force.
Comment by Jeremy Hine on April 5, 2011 at 7:49pm

who was that older guy at the last panel?  Reminded me of Dr Brown from Back To The Future.



Comment by Lester Eric Brehm on April 5, 2011 at 7:38pm

Ahhh, good point I'll make a note of that, have all test labs do it the same.


Comment by Wes Burdine on April 5, 2011 at 4:24pm
Ahhh, the helping hand strikes again!
Comment by Scott Heusser on April 5, 2011 at 4:18pm
I'll withhold my comments for the moment.

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