1 / 12

CO Gas Meter/Detector

CO Gas Meter/Detector. CO Gas Meter/Detector. Why monitor for CO? “ Carbon monoxide is an asphyxiant that exerts its toxic effects by combining with the hemoglobin of the blood, which decreases the amount of oxygen delivered to the tissues (OSHA).”. CO Gas Meter/Detector.

cybele
Télécharger la présentation

CO Gas Meter/Detector

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CO Gas Meter/Detector

  2. CO Gas Meter/Detector Why monitor for CO? “Carbon monoxide is an asphyxiant that exerts its toxic effects by combining with the hemoglobin of the blood, which decreases the amount of oxygen delivered to the tissues (OSHA).”

  3. CO Gas Meter/Detector Signs and Symptoms of CO exposure • Frontal Headache • Confusion • Abdominal Pain • Seizures • Convulsions • Dizziness • Disorientation • Diarrhea • Fatigue • Irritable • Impaired Vision • Respiratory failure • Nausea/Vomiting • Sleepiness • Impaired Judgement • Unconsciousness

  4. Basic Exposure Guidelines REL 35ppm(NIOSH) PEL 50ppm (OSHA) Ceiling 200ppm(OSHA) CO Gas Meter/Detector

  5. CO Gas Meter/Detector CO Levels vs. Affects 36-99 ppm Unsafe levels. 100 ppm 10% Carboxyhemoglobin within 90 min. Slight headache, tired, dizzy within 4-6 hrs. 200 ppm Slight headache, tired, dizzy within 2-3 hrs. 400 ppm Frontal headaches 1-2 hrs. Life threatening after 3 hrs. 800 ppm Dizziness, nausea, convulsions within 45 minutes. Unconsciousness within 2 hrs. Death within 3 hrs.

  6. CO Gas Meter/Detector Limitations & Considerations Temperature Extremes Battery Life Necessity of Calibration with gas

  7. CO Gas Meter/Detector Portable detectors Electoroxidize CO-CO2 according to chamber pCO2, signal is amplified to generate reading Diffusion sensor utilizing three-electrode electrochemical detection system

  8. CO Gas Meter/Detector Fixed detectors Heat of reaction method Samle is passed through heated catalyst bed, which promotes oxidation of CO Heat generated is proportional to CO level in the sample

  9. CO Gas Meter/Detector • Calibration • Must be conducted in “clean” air environment with certified calibration gas at least every 30 days • Annual factory calibration is recommended

  10. CO Gas Meter/Detector Card style CO detectors serve as basic indication of CO only, and should not be used where precise measures of CO are required.

  11. References Cited Manchacha Fire CO SOG http://www.mvfd.org/cox.html accessed 04/04/01 OSHA Web Site http://www.osha-slc.gov/SLTC/healthguidelines/carbonmonoxide/recognition.html accessed 04/04/01

  12. Bibliography • DiNardi Salvatore R. (1998) The Occupational Environment-Its Evaluation and Control, AIHA, Fairfax, Virginia • Goetsch David L. (1999) Occupational Safety and Health for Technologists, Engineers, and Managers, Prentice Hall, Upper Saddle River, New Jersey

More Related