Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-26-2019, 10:45 AM   #21
Guru
 
High Wire's Avatar
 
City: Cape May, NJ and Englewood, FL
Country: USA
Vessel Name: Irish Lady
Join Date: Dec 2007
Posts: 2,831
Agree with hydrogen offgas from an overcharged battery cell. I have had it happen on an AGM 8D gone bad. Yes it could be the charger driving battery voltage above 14.0 volts for excessive time. Maybe it failed to revert to Float mode after reaching full charge.
In summary, removing the smoke detector batteries silenced the alarm but the initial condition still exists.
__________________
Advertisement

__________________
Archie
1984 Monk 36 Hull #46
Currently moored in Englewood, Florida.
High Wire is offline   Reply With Quote
Old 11-27-2019, 09:20 AM   #22
Guru
 
O C Diver's Avatar
 
City: Fort Myers, FL... Summers in Crisfield, MD
Country: USA
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 7,717
The other thing that can trigger these detectors is a very small insect inside the device. We have had that problem with a combination detector in a family home on Martha's vineyard. The PIA part is finding which detector has the insect and evicting it.

Ted
__________________

__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
O C Diver is online now   Reply With Quote
Old 11-27-2019, 05:30 PM   #23
Senior Member
 
Join Date: Jan 2008
Posts: 203
Thanks all for your thoughts.
I will be returning to the boat this weekend to check things out.
I just topped off my 8D flooded batteries prior to me exiting the boat.
Then, my buddy calls me and tells me the alarms are going off.
I’m thinking you guys might be right. Hydrogen off gassing......?
Taras is offline   Reply With Quote
Old 12-02-2019, 05:52 PM   #24
Senior Member
 
Steve DAntonio's Avatar


 
City: Deltaville
Country: United States
Join Date: Dec 2015
Posts: 361
Quote:
Originally Posted by CaptTom View Post
I've had CO alarms go off from outgassing FLA batteries, too.

But also be aware that there are "marine" CO alarms which work differently than home alarms. I'm no expert, but as I understand it, they marine ones are more tolerant of small, transient amounts of CO, like a passing outboard, while home units will continue to count accumulated amounts and then alarm when some threshold is reached.

If these are not marketed as marine detectors, you may end up replacing them all.
Time weighted averaging is a a process used by most marine CO detectors, household alarms may use this as well to prevent false alarms.

I have installed household combination smoke/co detectors in scores of vessels with few false alarm issues.

To be clear, an overcharged FLA battery emits excessive hydrogen gas, which is known to trigger CO alarms.

Also, tightly closed up vessel, with carpet, and other upholstery, particularity in hot climates, can off gas enough to trigger an alarm.

Finally, CO from nearby vessels can trigger alarms if the alarm equipped vessel is adjacent of downwind, this scenario has actually been responsible for deaths. Not suggesting that's the case here, just pointing out this is possible, and it's why ABYC draws no distinction between vessels that have CO-producing devices and those that don't. All vessels with enclosed cabins need a CO detector(s).

More on the subject https://stevedmarineconsulting.com/co-poisoning/

As an aside, diesel exhaust produces very little CO, in my research I have been unable to find any deaths related to diesel-produced CO.

(In Taiwan at the Ta Shing Yard)
__________________
Steve D'Antonio Marine Consulting, Inc.
https://www.stevedmarineconsulting.com
Steve DAntonio is offline   Reply With Quote
Old 12-02-2019, 06:26 PM   #25
Guru
 
Airstream345's Avatar
 
City: Seattle, WA USA
Country: United States
Vessel Name: FORTITUDE
Vessel Model: Kadey Krogen 54-8
Join Date: Jul 2017
Posts: 630
Curious which linked system you installed. Our new to us KK came with neither smoke nor CO detectors and Iíve been shopping for some to install.
__________________
FORTITUDE
Blog: mvfortitude.com
Instagram: @mvfortitude
Airstream345 is offline   Reply With Quote
Old 12-02-2019, 07:09 PM   #26
Guru
 
boatpoker's Avatar
 
City: Whitby, Ontario
Country: Ontario
Vessel Name: DIRT FREE
Vessel Model: Benford Fantail 38
Join Date: Sep 2012
Posts: 2,526
Quote:
Originally Posted by Steve DAntonio View Post
As an aside, diesel exhaust produces very little CO, in my research I have been unable to find any deaths related to diesel-produced CO.
Neither have I been able to find a fatality connected to diesel produced CO however I once did some work for a professor of haematology.

He told me that he knew of no valid studies with diesel exposure over time and that even if it caused no fatalities a severe reaction was possible if not likely with extended low level CO.

He explained that it takes up to two weeks for the effects of CO to clear from the blood. With that in mind a snowbird run from Toronto to the Bahamas with a low level CO leak could make for a very sick crew.
__________________
If you can live with the consequences, go for it - wg
Y'am what y'am an' thats' all that y'am - Popeye
I had an allergic reality - Jillie the Bean
boatpoker is offline   Reply With Quote
Old 12-02-2019, 07:44 PM   #27
Enigma
 
RT Firefly's Avatar
 
City: Slicker?
Country: Bumpkin?
Join Date: Oct 2007
Posts: 12,851
Greetings,
Mr. bp. I also understand CO is cumulative. I suppose with your scenario (TO to the Bahamas) one's blood might become very close to the saturation point and any incident of "extra" CO exposure that might otherwise be somewhat benign could easily be fatal. Good point.
__________________
RTF
RT Firefly is online now   Reply With Quote
Old 12-02-2019, 11:06 PM   #28
Senior Member
 
Join Date: Jan 2008
Posts: 203
So I was on my vessel this weekend and sure enough, both of the 8D start batteries (which I recently topped off) were in fact very hot and off gassing hydrogen. Those batteries are shot. Time to replace. Battery charger was just pumping juice into them.
I’m sure that’s what triggered my new Kiddie smoke/CO detectors.
Thanks all for the help!
Taras is offline   Reply With Quote
Old 12-02-2019, 11:07 PM   #29
Newbie
 
City: Fort lauderdale
Country: USA
Join Date: Mar 2018
Posts: 4
how to determine the detector that caused the alarm

Generally they all have a light on them sometimes two. Look at the alarm if they are going off and blinking green, one should be blinking red. That is the one that caused them all to go off. Once you press the button and reset them or pull out the batteries you will have to wait until they go off again.
audioshark is offline   Reply With Quote
Old 12-03-2019, 04:54 AM   #30
Senior Member
 
Steve DAntonio's Avatar


 
City: Deltaville
Country: United States
Join Date: Dec 2015
Posts: 361
Quote:
Originally Posted by Airstream345 View Post
Curious which linked system you installed. Our new to us KK came with neither smoke nor CO detectors and Iíve been shopping for some to install.
Smoke and CO detection is a requirement for ABYC compliance. I know KKY doesn't profess full ABYC compliance, but you might ask for their take in this, I'd think they'd want to comply.

More on smoke detectors here https://stevedmarineconsulting.com/w...d-may-2018.pdf

(In Taiwan at the Ta Shing Yard)
__________________
Steve D'Antonio Marine Consulting, Inc.
https://www.stevedmarineconsulting.com
Steve DAntonio is offline   Reply With Quote
Old 12-03-2019, 11:30 AM   #31
Guru
 
Airstream345's Avatar
 
City: Seattle, WA USA
Country: United States
Vessel Name: FORTITUDE
Vessel Model: Kadey Krogen 54-8
Join Date: Jul 2017
Posts: 630
Steve, our KK is a 1991. We noticed the lack of detectors during our walkthroughs and it was flagged on the survey.
__________________
FORTITUDE
Blog: mvfortitude.com
Instagram: @mvfortitude
Airstream345 is offline   Reply With Quote
Old 12-04-2019, 05:33 AM   #32
Senior Member
 
Steve DAntonio's Avatar


 
City: Deltaville
Country: United States
Join Date: Dec 2015
Posts: 361
Quote:
Originally Posted by Airstream345 View Post
Steve, our KK is a 1991. We noticed the lack of detectors during our walkthroughs and it was flagged on the survey.
My apologies, I misunderstood, I thought it was a new KKY.

(In Taiwan, bound for Xiamen, China)
__________________

__________________
Steve D'Antonio Marine Consulting, Inc.
https://www.stevedmarineconsulting.com
Steve DAntonio is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 10:47 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012
×