View Poll Results: Will you be using R32 or waiting for a non flammable blend instead?

Voters
7. You may not vote on this poll
  • Yes, I will use R32 as my choice refrigerant

    0 0%
  • No, I will be waiting for low flammability options

    7 100.00%
Results 1 to 9 of 9
  1. #1
    hookster's Avatar
    hookster is offline Veteran Poster I am starting to push the Mods: of RE
    Join Date
    Apr 2007
    Location
    Hampshire
    Posts
    430
    Rep Power
    25

    R32 the hidden dangers besides A2L Flammability



    Hi all
    R32 has now been launched on us with all the manufacturers singing its praises and hiking the prices of refrigerants to force us to use this refrigerant. (Is it just to get around quota on imports?)

    R32 is difluoromethane (methylene fluoride) and it is an HFC type refrigerant. R32 has been used for many years as a component of both R407C and R410A. It is flammable on its own, but not when mixed with the other components of these blends. There is a plethora of blends being launched R448A and Leonardo DiCaprio's favourite, R458A.

    Flammability aside - Yes it burns don't believe the bull! Is heavier than air and will pool!

    The real danger is to us guys out in the field because at some point you will be carrying out hot works with this refrigerant coming out of the system. As is the case with all fluorinated refrigerants, R32 will decompose and produce toxic byproducts such as hydrogen fluoride and carbon dioxide when burnt.

    Hydrogen fluoride is a highly dangerous gas, forming corrosive and penetrating hydrofluoric acid upon contact with moisture. The gas can also cause blindness by rapid destruction of the corneas.
    Upon contact with moisture, including tissue, hydrogen fluoride immediately converts to hydrofluoric acid, which is highly corrosive and toxic, and requires immediate medical attention upon exposure. Breathing in hydrogen fluoride at high levels or in combination with skin contact can cause death from an irregular heartbeat or from fluid buildup in the lungs.

    For all of us working with refrigerants safety goggles should be a minimum but when brazing with systems charged with R32 and its blends. You should be wearing a disposable mask rated for hydrogen fluoride.
    like: 3M 9906 Hydrogen Fluoride Respirators

    Time we all got onto our employers to supply the correct safety gear if they want us to work with hazardous chemicals to ensure our safety and that they have an employee available to work for them.


    I love the smell of Ammonia in the morning!

  2. #2
    Join Date
    Sep 2007
    Location
    Somerset
    Age
    63
    Posts
    4,468
    Rep Power
    38

    Re: R32 the hidden dangers besides A2L Flammability

    What a brilliant Post Hookster.
    Having sustained years of book readers dictating what I should and shouldn't do in the course of carrying out my Job.
    I have begun to realise that if I decide that something like Methylene fluoride is unsafe for me.
    I can raise my concerns and Health and Safety Guys will be all over it.

    I used to work at a Iseon Manufacturing site where derivatives of this stuff were made.
    We were scared of it then and that was before the H&S blanket was available.


    Thanks for the "Heads Up".

    Rep point awarded.
    Grizzly
    Last edited by Grizzly; 03-06-2017 at 10:56 AM.
    Despite the High Cost of Living it still remains Popular!

  3. #3
    Join Date
    Sep 2003
    Location
    ISRAEL
    Age
    65
    Posts
    4,099
    Rep Power
    37

    Re: R32 the hidden dangers besides A2L Flammability

    Thanks hookster for that info, I dont do AC, only refrigeration but now I will sure stay away from that R-32.

  4. #4
    Join Date
    Aug 2006
    Location
    england
    Age
    43
    Posts
    3,781
    Rep Power
    38

    Re: R32 the hidden dangers besides A2L Flammability

    Thanks Hookster for the heads up, remember being told something similar on the F Gas course but thought it was the 1234hf and 1234yf refrigerants.
    Will look into the respirators you mentioned. Sadly my refrigerant choices will be dictated by the manufacturer, plus not much choice if its maintenance call to something installed by others.
    Mostly found in Oxfordshire, UK :)

  5. #5
    Join Date
    Jul 2010
    Location
    NTH.QLD Australia
    Age
    55
    Posts
    1,754
    Rep Power
    26

    Re: R32 the hidden dangers besides A2L Flammability

    Thank You Hookster.
    Appreciate you posting this info.
    To the optimist, the glass is half full. To the pessimist, the glass is half empty.

  6. #6
    Join Date
    Dec 2008
    Location
    UK
    Posts
    501
    Rep Power
    16

    Re: R32 the hidden dangers besides A2L Flammability

    Thank you Hookster,
    Great insight into the potential health problems.
    Mobile A/C at its best, see avatar.

  7. #7
    Join Date
    Dec 2008
    Location
    england
    Age
    70
    Posts
    129
    Rep Power
    9

    Re: R32 the hidden dangers besides A2L Flammability

    Thanks for the info hookster. What has happened to health and safety. Why do they think it is okay to put potential bombs in peoples homes and businesses. Have they learnt nothing from Grenfell Towers.

  8. #8
    Join Date
    Feb 2005
    Location
    United Kingdom
    Age
    47
    Posts
    52
    Rep Power
    13

    Re: R32 the hidden dangers besides A2L Flammability

    It's all HFC and HCFC and CFC. It's not just R32 that will produce Hydrofluoric acid. All fridge and ac engineers should know this. Check the facts.

  9. #9
    Brian_UK's Avatar
    Brian_UK is online now Moderator I am starting to push the Mods: of RE Site Moderator : and general nice guy
    Join Date
    Mar 2001
    Location
    Dorset
    Age
    69
    Posts
    10,384
    Rep Power
    49

    Re: R32 the hidden dangers besides A2L Flammability

    Quote Originally Posted by Imp View Post
    It's all HFC and HCFC and CFC. It's not just R32 that will produce Hydrofluoric acid. All fridge and ac engineers should know this. Check the facts.
    As was stated in the original post. Check you read everything.
    Brian - Newton Abbot, Devon, UK
    Retired March 2015
    Please support http://the100project.net/Home

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •