Reply
 
Thread Tools Search this Thread Display Modes
 
Old 04-16-2021, 07:25 AM   #41
Guru
 
Steve DAntonio's Avatar


 
City: Deltaville
Join Date: Dec 2015
Posts: 882
The vast majority of recreational diesel vessels I inspect are equipped with fixed fire systems.
__________________
Steve D'Antonio Marine Consulting, Inc.
https://www.stevedmarineconsulting.com
Steve DAntonio is offline   Reply With Quote
Old 04-16-2021, 07:41 AM   #42
Guru
 
City: Rochester, NY
Vessel Name: Hour Glass
Vessel Model: Chris Craft Catalina 381
Join Date: Aug 2019
Posts: 5,726
An interesting idea that is used in airplanes, but I've never seen in a boat is this: a second slow-release bottle to assist in maintaining adequate agent concentration. So if the system triggers, the first bottle dumps, then either right away or after a few minute delay, the second bottle starts to release and slowly dumps over the course of 10 - 15 minutes.



A system like that would ensure the extinguishing agent concentration stays high enough for longer (to allow things to cool and avoid re-ignition), especially on boats where you can't easily and automatically seal off all engine room vents.



Another thought is whether the typical single point of sensing systems are adequate. On my boat, the halon tank sits on the aft engine room bulkhead between the engines. So an engine fire would trip it pretty readily. But a fire caused by the generator, water heater, or something else at the other end of the engine room (12-ish feet away) would take much longer to get enough heat to the bottle to cause a discharge. By the time it goes off in that case, it might be too late to be useful.
rslifkin is online now   Reply With Quote
Old 04-16-2021, 08:22 AM   #43
Guru
 
Portage_Bay's Avatar
 
City: Coupeville Wa.
Vessel Name: Pelorus
Vessel Model: Californian 42 LRC
Join Date: Oct 2015
Posts: 1,853
Quote:
Originally Posted by Steve DAntonio View Post
For ABYC compliance, an auto-shut down is required. The cu ft of the space should be confirmed, I do this routinely and periodically find under and over sized bottles. A proper inspection includes weighing the cylinder and testing the manual discharge cable (also an ABYC requirement) and demonstrating the auto shut down system.
Is there a performance problem with oversized bottles?
__________________
Some things are worth doing simply because they are worth doing.
Portage_Bay is online now   Reply With Quote
Old 04-17-2021, 09:21 AM   #44
Guru
 
Steve DAntonio's Avatar


 
City: Deltaville
Join Date: Dec 2015
Posts: 882
Quote:
Originally Posted by Portage_Bay View Post
Is there a performance problem with oversized bottles?
No but there is a safety issue. If the agent is non-toxic, such as FM200, it is only non-toxic at the designed concentration, exceed that and it could become lethal.

Engine rooms are considered normally unoccupied spaces, so there is no mandate in the US for non-toxic agents, however, toxic agents cannot be used on CE compliant vessels.

I spec non-toxic clean agents for engine rooms, even if not mandated. I spend a lot of time in engine rooms, as do many of my clients, I want that protection in that space.
__________________
Steve D'Antonio Marine Consulting, Inc.
https://www.stevedmarineconsulting.com
Steve DAntonio is offline   Reply With Quote
Reply

Tags
fire bouy, fire suppressant systems, halon

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


» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program





All times are GMT -5. The time now is 09:40 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012