Carbon Monoxide Alarm Question

BarelySentientAI

mmmmikey said:

It looks to me like a wide outer ring of paint on the curved section of the pan between the machined base and the rim has burnt off (between the 7 o'clock and midnight positions on the photo).

It is quite possible (I think?) that the smoke from the burning paint would have smothered the burning gas to some extent, starving it of oxygen and leading to a build up of carbon monoxide. I'm only speculating here but it seems like a reasonable explanation?

Oh, I apologise to the OP - I saw that and thought that it was a reflection of ceiling lights.

Yes, something now does seem to have gone on - but I'd be wary of that explanation because of the statement "No alarm gone off in the past 2 weeks when cooking with this".  Unless somehow it was 'clogging' the burner and making an effect when a different pan was next used, but I can't think of a sensible mechanism for that.

MattMattMattUK

sho_me_da_money said:

BarelySentientAI said:

There was never black paint on the bottom of that pan to begin with.

Sorry not following. What is the black on the underside that is eroding and showing the silver 

The area with the rings that are ridged, that would have never had paint on it, it would always have been bare metal. 

sho_me_da_money

I can see how the picture is confusing. The areas that look silver in the photo are not reflections. The underside of the pan when bought brand new was black with exception of the ridged circle in the middle.  Areas marked in orange are now silver and not black. I wonder if this coating being burnt away has caused the CO level to have triggered the alarm.

MattMattMattUK

sho_me_da_money said:

I can see how the picture is confusing. The areas that look silver in the photo are not reflections. The underside of the pan when bought brand new was black with exception of the ridged circle in the middle.  Areas marked in orange are now silver and not black. I wonder if this coating being burnt away has caused the CO level to have triggered the alarm.

It could have caused the issue, but one cannot be sure either way. Was the pan on a large gas hob, one that was wider than the silver heat transfer area? 

TheElectricCow

mmmmikey said:

It looks to me like a wide outer ring of paint on the curved section of the pan between the machined base and the rim has burnt off (between the 7 o'clock and midnight positions on the photo).

It is quite possible (I think?) that the smoke from the burning paint would have smothered the burning gas to some extent, starving it of oxygen and leading to a build up of carbon monoxide. I'm only speculating here but it seems like a reasonable explanation?

I think when combined with the cooking smoke/inadequately ventilated kitchen, this sounds like the most plausible explanation so far.

Lots of “stuff” in the air around the burner with a large pan and limited fresh air supply to the room all contributing together sounds like it may be enough to reduce oxygen getting to the flame, potentially increasing CO emissions enough for a small buildup to occur and trigger the alarm.

sho_me_da_money

TheElectricCow said:

mmmmikey said:

It looks to me like a wide outer ring of paint on the curved section of the pan between the machined base and the rim has burnt off (between the 7 o'clock and midnight positions on the photo).

It is quite possible (I think?) that the smoke from the burning paint would have smothered the burning gas to some extent, starving it of oxygen and leading to a build up of carbon monoxide. I'm only speculating here but it seems like a reasonable explanation?

I think when combined with the cooking smoke/inadequately ventilated kitchen, this sounds like the most plausible explanation so far.

Lots of “stuff” in the air around the burner with a large pan and limited fresh air supply to the room all contributing together sounds like it may be enough to reduce oxygen getting to the flame, potentially increasing CO emissions enough for a small buildup to occur and trigger the alarm.

Im off this opinion.

I just wish my CO alarm had a digital interface showing the PP value. Had i of seen it low, i would have avoided paying the money to get someone out.

Thanks a bunch all.

Eldi_Dos

sho_me_da_money said:

TheElectricCow said:

mmmmikey said:

It looks to me like a wide outer ring of paint on the curved section of the pan between the machined base and the rim has burnt off (between the 7 o'clock and midnight positions on the photo).

It is quite possible (I think?) that the smoke from the burning paint would have smothered the burning gas to some extent, starving it of oxygen and leading to a build up of carbon monoxide. I'm only speculating here but it seems like a reasonable explanation?

I think when combined with the cooking smoke/inadequately ventilated kitchen, this sounds like the most plausible explanation so far.

Lots of “stuff” in the air around the burner with a large pan and limited fresh air supply to the room all contributing together sounds like it may be enough to reduce oxygen getting to the flame, potentially increasing CO emissions enough for a small buildup to occur and trigger the alarm.

Im off this opinion.

I just wish my CO alarm had a digital interface showing the PP value. Had i of seen it low, i would have avoided paying the money to get someone out.

Thanks a bunch all.

Think you misunderstand the function of a alarm, a threshold was reached and the alarm triggered, having professionals checking your appliances was not a waste of time or money.

Myself I would bin that pan, if coating is getting burnt off by usage.

Ectophile

British Standard CO alarms are set to trigger only at dangerously high levels of carbon monoxide.  If the alarm goes off, you are already being poisoned.

If the kitchen was full of smoke, then was it the gas stove that was producing the CO, or the food being incinerated?  Smouldering things can produce more CO than things that are burning.