CO monitor constantly alarming in Shelter

[SirBacon]

https://learn.eartheasy.com/articles/the-top-10-plants-for-removing-indoor-toxins/https://www.housebeautiful.com/lifestyle/gardening/a23582144/easy-houseplants-minimal-water/I sometimes don't go down there for a month at a time. Will need something that doesnt need much care.

 

[Maudite]

Hi all, new member but been prepping for a while. I have a 10 x 20 underground steel shelter. We have a Carbon Monoxide and explosive gas detector in it that is constantly reading about 200ppm for CO. When I turn on the fans and vent the shelter, it drops to safe levels in about 30 mins. I have nothing combusting in the shelter (it's all electric powered, AC and DC) so not sure I really have a CO problem. I can`t come up with another realistic gas that could cause a false positive either. Any one have experience with false CO readings in underground shelters or have a guess what could trigger it? I have tried 3 different brands,of detectors and they all show similar readings.

Your steel shelter is acting as a kiln, which is causing the organics in the clay to outgas....

 

[jontte]

wow,so many things to consider how and what you use when doing a shelter..

 

[jontte]

https://survivalcache.com/survival-...wrrVc_x5_hNYj9UNEY66s9eSr_x7RjDkml4x_fuKv33pU
came across this and thought to post it here.

 

[Gennadievich]

... When I turn on the fans and vent the shelter, it drops to safe levels in about 30 mins. ....

Does this mean that you turn on the ventilation periodically, but not constantly?
As I understand..
If you do not have a natural ventilation system, then you must keep the forced ventilation system on at all times. (about 100 W * h for a 50-100 m2 area and a ceiling height of 2.5 m).
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If there is a mixed ventilation system,
then natural ventilation works first, and when the sensor is triggered, forced ventilation is activated.
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I don't know how in America.
In Russia, it is prohibited by building codes and regulations to install a forced ventilation system without natural ventilation for civilian facilities.
At other facilities (shelter, military, industrial) - it is possible, but it must work constantly.