1. MIRAN Gas Meter/Detector

2. Introduction Air monitoring data is useful for: *Assessing the health risks to the public and response workers. *Selecting personal protective equipment. *Delineating areas where protection is needed. *Determining actual or potential effects on the environment. *Selecting actions to mitigate the hazards safely and effectively.

3. MIRAN Gas Meter/Detector To be useful air monitoring instruments must be: *Portable and rugged. *Easy to operate. *Easy to operate. *Inherently safe. *Inherently safe. *Able to generate reliable and useful results. *Able to generate reliable and useful results.

4. MIRAN Gas Meter/Detector The response time, sensitivity, selectivity, accuracy and precision of an instrument are important in evaluating the reliability and usefulness of the data the instrument generates. The response time, sensitivity, selectivity, accuracy and precision of an instrument are important in evaluating the reliability and usefulness of the data the instrument generates.

5. MIRAN Gas Meter/Detector Limitations & Considerations Temperature Temperature Oxygen Levels Oxygen Levels Interfering Coumpounds Interfering Coumpounds  Organic Lead  Sulfur compounds  Silicone  Acid Gases

6. Toxic Atmosphere Monitors Toxic atmosphere monitoring is done to: *identify airborne concentrations that could pose a toxic risk to response workers and the public. *evaluate the need for and type of personal protective equipment. *set up work zones or areas where contaminants are or are not present.

7. MIRAN Gas Meter/Detector Portable Infrared(IR) Portable Infrared(IR) Microprocessor controlled, single beam Microprocessor controlled, single beam Capable of detecting hundreds of compounds Capable of detecting hundreds of compounds

8. MIRAN Gas Meter/Detector Sample is drawn at 25-30L/min Sample is drawn at 25-30L/min Sample absorbs IR energy from the “Nichrome” wire Sample absorbs IR energy from the “Nichrome” wire Energy absorbed by sample correlates to ppm Energy absorbed by sample correlates to ppm

9. MIRAN Gas Meter/Detector Capable of measuring various gases at same time Capable of measuring various gases at same time Compares to computerized list and displays most probable agent detected Compares to computerized list and displays most probable agent detected Good for inorganic and organic compounds Good for inorganic and organic compounds

10. References Cited http://www.ashtead- technology.com/instruments/new_instrumen ts.htmhttp://www.ashtead- technology.com/instruments/new_instrumen ts.htm Accessed 05/02/01 http://www.ashtead- technology.com/instruments/new_instrumen ts.htm NIOSH Manual of Analytical Methods (NMAM®), 4th ed. DHHS (NIOSH) Publication 94-113 (August, 1994), Cassinelli, M.E. & O'Connor, P.F. (pfo1@cdc.gov), Eds. O'Connor, P.F. (pfo1@cdc.gov)O'Connor, P.F. (pfo1@cdc.gov)

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