Wendy Hampton on thu 9 jul 98
I just bought a Carbon Monoxide detector. The instructions say that below 50
ppm is low. I heard on the radio the other day that above 10 is life
threatening.
The detector read 23 the last time I fired a bisque. Does anyone know the
figure that you should be concerned?
Thanks
Wendy from Bainbridge Island WA
Monona Rossol on fri 10 jul 98
---------- Forwarded message ----------
Date: Thu, 9 Jul 1998 11:50:45 EDT
From: Wendy Hampton
Subject: Carbon Monoxide ratings
----------------------------Original message----------------------------
I just bought a Carbon Monoxide detector. The instructions say that below 50
ppm is low. I heard on the radio the other day that above 10 is life
threatening.
The detector read 23 the last time I fired a bisque. Does anyone know the
figure that you should be concerned? Thanks Wendy from Bainbridge Island WA
-------------------------------------------------------------------------
The radio is right--there is an increase in hospital admissions and deaths
from heart attacks when outdoor standards of 9 - 11 ppm are reached.
However, the OSHA 8 hour limit for healthy workers is 35 ppm. Pregnant women
are another whole problem because even the small amount of CO from
cigarette smoke appears to be one of the factors in causing problems for
the fetus.
You have just asked one of the most complex questions imaginable. There
is no simple answer. What I suggest you do is send me a Self-addressed
Stamped Envelop and I'll send you a 4 page data sheet on Carbon Monoxide
Detectors and how to interpret the information.
It sounds like you have a Nighthawk which is just about the best detector out
there. It is important to understand what the data on the detector really
means. The unit's alarm will not go off in time to protect your health--it
will only save your life from severe over-exposures.
I'll be glad to send you the information courtesy of the United Scenic
Artists, Local 829 (IBPAT). I am their Health and Safety Director and we
often install Nighthawks in indoor movie and TV filming locations when gas
powered equipment and vehicles are used inside.
Monona Rossol, H & S Director
Local 829, United Scenic Artists
also
Arts, Crafts and Theater Safety
181 Thompson St., # 23
New York, NY 10012-2586 212/777-0062
http://www.caseweb.com/acts/
Ron Roy on sun 12 jul 98
I use a night hawk when firing - you must understand that time exposed is a
factor. I would say a couple of hours at 50 would result in at least a
world class headache.
I have two of them and set them up together during a firing - the readings
were not the same - but not too different.
I aim for 0 - either increase ventilation or get out if you can't eliminate it.
>----------------------------Original message----------------------------
>I just bought a Carbon Monoxide detector. The instructions say that below 50
>ppm is low. I heard on the radio the other day that above 10 is life
>threatening.
>The detector read 23 the last time I fired a bisque. Does anyone know the
>figure that you should be concerned? Thanks Wendy from Bainbridge Island WA
>-------------------------------------------------------------------------
Ron Roy
93 Pegasus Trail
Scarborough, Ontario
Canada M1G 3N8
Tel: 416-439-2621
Fax: 416-438-7849
Web page: http://digitalfire.com/education/people/ronroy.htm
Kate and Phil Smith on mon 13 jul 98
Buy them while you can! The Natural Gas industry has pressured UL to
revise the standard to eliminate the digital display or any indication of
Monoxide exposure less than either 35 or 50 ppm (can't remember which
level) This will apply to all UL consumer type Carbon Monoxide detectors
manufatured after October '98. Most manufacturers have changed the
product line already.
Kate and Phil Smith on wed 15 jul 98
A recent paper presented at a Toxicology society (Dr Beyer, U of Conn,
College of Medicine, Emergency Medicine) presented documentation of
health effects related to low level exposure.
If I remember correctly a level below 10ppm was of concern.
IMHO
Easy to get that from a gas oven doing the turkey thing for holidays.
Monoxide is easy to measure. Many air quality experts use it as a tool
to indicate exposure to other noxious by products of combustion like
NOx.....aldehydes....POM's...particulates...
Again IMHO
Positive ventilation of any kiln space is really important. By positive
ventilation I want an equal supply of air into area as well as exhaust of
air out of kiln area.
If you only exhaust you can pull gasses from a kiln into space if the
pressure difference is great enough.
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