Information pertaining to airborne carbon-monoxide (630080) (CO) levels and estimated exhaled CO concentrations in workers was presented for three sites where CO poisoning related to propane powered forklifts was reported in Colorado. Draeger dataloggers, which measured airborne CO, were attached to workers during a work shift. Preshift and postshift carboxyhemoglobin estimates were calculated by workers exhaling into a tube that was monitored by a Draeger datalogger. Case one occurred in a 52 year old employee of a wholesale beverage distributor (W1) where forklifts delivered pallets of beverages. Case two occurred in a 25 year old forklift driver at a sugar packing company (W2). Case three involved three workers at a metal distributor that used propane forklifts and heaters (W3). In all cases, employees were not trained concerning the hazards of CO and emissions were not monitored. Indoor CO levels reached 140 parts per million (ppm) at W1, 70ppm at W2, and 300ppm at W3. Exhaled CO in employees at W1 ranged from 17 and 65ppm (mean 42ppm) during a workshift. At W2, time weighted averages during and after forklift maintenance ranged from 8 to 17ppm (mean 13ppm). End exhaled CO concentrations were 8ppm. After forklift maintenance at W1, CO exposure was below Occupational Safety and Health Administration limits during the day, but rose at night because two forklifts were in operation. The use of propane fueled instead of gasoline fueled equipment did not solve the problem of CO emissions. The authors conclude that use of propane fueled equipment indoors must be accompanied by diligent equipment maintenance and CO testing.
We take your privacy seriously. You can review and change the way we collect information below.
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.
Cookies used to make website functionality more relevant to you. These cookies perform functions like remembering presentation options or choices and, in some cases, delivery of web content that based on self-identified area of interests.
Cookies used to track the effectiveness of CDC public health campaigns through clickthrough data.
Cookies used to enable you to share pages and content that you find interesting on CDC.gov through third party social networking and other websites. These cookies may also be used for advertising purposes by these third parties.