AIR VENTS ON DOOR

Mike Harding · Guru

RE: AIR VENTS ON DOOR

oldbloke · Guru

Bobdown wrote:
It's not that hard fellows, turn the gas bottle off when you drive off.
When you get to a gravel road more than say 20k long to where you want to go, tape up your door and bottom fridge vent, open scupper and drive.
When you set up camp, remove taped up sections and open door and windows, turn the gas on, close scupper.
Have seen lots of small shower vents open when vans go past oldbloke, but they have all been facing rearwards and flapping about a bit.
Cheers Bob

Bobdown,

We have a vent about double the size that can be opened to the front about 30mm.

Brodie Allen · Guru

Mike Harding wrote:
Brodie Allen wrote:
The law will be spot-on and correct and sacrosanct - when you want to make an insurance claim,
or somebody is poisoned or there's an explosion and there's a police matter also.
You should understand; I just don't care.
I have spent my life living on the wild side, taking risks and being responsible for the outcomes. So far, so good.
If you wish to live the few years remaining to you in that cotton wool box then so be it but you will have forfeited much of the really interesting and exciting aspects of life but, no doubt, you will be the safest man in the graveyard.

Irresponsible. Stupidity isn't the "wildside".

Not a very dramatic way of getting your thrills!

Whenarewethere · Guru

Another explosion in a confined area. As boats generally don't have ventilation in the bottom of the hull dangerous situations can arise.

https://www.news.com.au/national/nsw-act/hawkesbury-river-multiple-people-injured-in-boat-explosion/news-story/4fcb01ee5149512806551fdc8ad6666b

Mike Harding · Guru

Brodie Allen wrote:
Not a very dramatic way of getting your thrills!

In what way would you prefer me to be more dramatic?

HandyWalter · Senior Member

Whenarewethere wrote:
Another explosion in a confined area. As boats generally don't have ventilation in the bottom of the hull dangerous situations can arise.
https://www.news.com.au/national/nsw-act/hawkesbury-river-multiple-people-injured-in-boat-explosion/news-story/4fcb01ee5149512806551fdc8ad6666b

1. It was a boat not a caravan

2. It was petrol fumes igniting not LPG.

Not relevant to what is being discussed here

Whenarewethere · Guru

A few irrelevant boats have gone up due to gas.

Whenarewethere · Guru

Years ago in North Sydney builders cut the gas mains. I worked in a basement of a terrace block 2 doors down the street. You could cut the air with a knife with the amount of gas in the air.

The fire brigade were there very quickly & evacuated all the buildings in the street.

An interesting day to say the least!

-- Edited by Whenarewethere on Tuesday 6th of April 2021 02:49:33 PM

HandyWalter · Senior Member

Whenarewethere wrote:
A few irrelevant boats have gone up due to gas.

This one was petrol powered. Read the article or look at the news footage

Whenarewethere · Guru

I said ''a few irrelevant boats have gone up due to gas'. I did not not say that one did.

oldbloke · Guru

The Lower Explosive Limit (LEL) is abt 1.8%.
Cant find it but the odour threshold is much lower. That is to say, you will smell it long before it the concentration get to the LEL. The smell is caused by a chemical that us added prior to distribution as a safety measure. ( so you can smell it)

Whenarewethere · Guru

The little episode in North Sydney. I spoke to one of the Firies once things were safe.

I said it was lucky that the angle grinder that cut the gas mains in two didn't start a fire or explode.

The Firie said that it would not have ignited at the source as there was so much gas it depleted the air of oxygen.

But they were worried about electrical things a bit further away.

oldbloke · Guru

Whenarewethere wrote:
The little episode in North Sydney. I spoke to one of the Firies once things were safe.
I said it was lucky that the angle grinder that cut the gas mains in two didn't start a fire or explode.
The Firie said that it would not have ignited at the source as there was so much gas it depleted the air of oxygen.
But they were worried about electrical things a bit further away.

Yes, that's right.. If the air to gas mix is too lean or too rich it won't ignition, just same as petrol in a car engine.

Lower Explosive Limit (LEL) & (too lean)

Upper Explosive Limit (UEL) (too rich)

There is an optimum number too.

Brodie Allen · Guru

https://l.facebook.com/l.php?u=https%3A%2F%2Fwww.4mk.com.au%2Fnews%2Flocal-news%2F134573-van-on-fire-south-of-calen%3Ffbclid%3DIwAR2ezaZgNx5mTfoRU1yAM1ScPTcYRE-CRGi1B--VJwVSxS18qljmWo1Apsw&h=AT2TXdadsBlPpt4Vq89e9Fb04n17xabrpu65OY7PSxHANRh5jffx--Go_jR09EnKYiOxIVdjv_KWN1PUn1EdgpUkc-zEQROu2dRLo3TRvBVsb71CanHgkEClgZxIZSvv8yJHV7RfkRodkg6n1ZI4

From a post elsewhere on the site.

Copy and paste into your browser.

oldbloke · Guru

Brodie Allen wrote:

https://l.facebook.com/l.php?u=https%3A%2F%2Fwww.4mk.com.au%2Fnews%2Flocal-news%2F134573-van-on-fire-south-of-calen%3Ffbclid%3DIwAR2ezaZgNx5mTfoRU1yAM1ScPTcYRE-CRGi1B--VJwVSxS18qljmWo1Apsw&h=AT2TXdadsBlPpt4Vq89e9Fb04n17xabrpu65OY7PSxHANRh5jffx--Go_jR09EnKYiOxIVdjv_KWN1PUn1EdgpUkc-zEQROu2dRLo3TRvBVsb71CanHgkEClgZxIZSvv8yJHV7RfkRodkg6n1ZI4
From a post elsewhere on the site.

Copy and paste into your browser.

Sorry, but what has this to do with this thread?

Derek Barnes · Senior Member

No one has mentioned the vents to the battery storage compartment. Even with today's sealed batteries they always warn you to have the battery compartment vented to get rid of any possible hydrogen build-up. Do you have your battery compartment vented, and do you seal it up on dirt roads. I have a vent in the floor of my battery compartment which does let in a lot of dirt on dirt roads but wold be difficult to get to in order to seal it. Hydrogen gas rises so I don't know whether the vent helps. I would not want to permanently seal the compartment though.

Whenarewethere · Guru

https://www.sbsbattery.com/products-services/white-papers/material-handling/risks-of-unmonitored-hydrogen-in-battery-installations/battery-room-ventilation-calculator.html

Buy a cheap pleated air filter for a car or vacuum, make a frame & screw it over the hole. Or make it so the filter slides in & out for easy cleaning. You might find an old vacuum off a council street rubbish collection you can pull the HEPA (usually low quality. I put a H14 in our vacuum) filter out of it, or use it's filter frame for mounting.