Jason/Susan
I can fill that I have a lot knowledge about chemical controllers and I am an Electrical Engineer
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From: Gregory, Kenneth <Kenneth.Gregory@xxxxxxxxxxx>
Sent: Friday, March 17, 2023 5:56:08 PM
To: Susan Campbell <suzieboxer@xxxxxxx>; Jason Snider <jsnider@xxxxxxx>; rwf_jc@xxxxxxxxxxxxxxxxx <rwf_jc@xxxxxxxxxxxxxxxxx>
Subject: Re: [rwf_jc] Groups - Comment #11262: Electrical engineer needed
Jason/Susan
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From: rwf_jc@xxxxxxxxxxxxxxxxx <rwf_jc@xxxxxxxxxxxxxxxxx> on behalf of Susan Campbell <suzieboxer@xxxxxxx>
Sent: Friday, March 17, 2023 5:53:25 PM
To: Jason Snider <jsnider@xxxxxxx>; rwf_jc@xxxxxxxxxxxxxxxxx <rwf_jc@xxxxxxxxxxxxxxxxx>
Subject: Re: [rwf_jc] Groups - Comment #11262: Electrical engineer needed
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Should we also have an alarm on the system if it goes off. SC
On November 28, 2022 at 10:01 AM Jason Snider <jsnider@xxxxxxx> wrote:
Jason Snider has updated the comment "Electrical engineer needed" to the document "50i187r2 - JC memo & Ballot.pdf" in the "Joint Committee on Recreational Water Facilities" group.
Subject : Electrical engineer needed
Category : N/A
Comment
For these public safety-critical (fail-safe) interlocks to assure that no chemicals are fed without water recirculation, we must have an electrical expert or engineer on the working group for their opinion.
A quick review of controller operation and install manuals states that a flow sensor alone is insufficient to assure success, that intermittant eletrical grid fluctualtions or nearby surges from lightning or other sources (even intentiaonal acts by operators)
can overwhelm a controller and allow the chemical feeders to activate. This is because controller manufacturers do NOT have 100% confidence in their flow sensors to cease flow from feeders. Interlocks are generally found in the controllers' relays in their
power board. And then there is is my state's pool construction code that requires an electrical interlock for chemical feeders or generators in six different scenarios. BV
Proposal
Assure an appropriate electrical engineer or SME is on the work group.
Changes
response added
Response
Hello,
The response letter to your comment has been uploaded.
Thank you,
Comment Number : #11262
Submitter : Jason Snider
Date submitted : 2022-10-26 07:46:03
Status : New
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