February 21, 2007

	esLife Service Life Estimation Program

	Name:	Josh
	EIN:
	Department:	Source
	Occupational Category:	Stack Testing
	Exposure Group:
	Task Description:	Emissions testing at any location under positive pressure at a coal fired power plant

	Estimated Cartridge Service Life:
	Cartridge	Description	Minutes	Hours	8-Hr. Shifts
	75SC	75SCP100	1877.33	31.289	3.911
	N7500-2	7582P100	1536.00	25.600	3.200
	N7500-3	7583P100	1706.67	28.444	3.556

	Input Parameters for Exposure Conditions:

	Contaminant [CAS#]:	SULFUR DIOXIDE [7446-09-5]
	8-hr TWA:	5	 ppm
	STEL:	ppm	User Specified OEL:	ppm
	Ceiling:	ppm	Worksite Concentration:	15	 ppm
	IDLH:	100	 ppm

	Breathing Rate:	Moderate - maximum pace for continuous working (50 lpm)
	Temperature:	70 °F
	Humidity:	less than 65%
	Breakthrough:	Results calulated at 10% breakthrough
	Safety Factor:	Final results times 0.8

	Disclaimer of Warranty
	 The algorithm and database included in this program incorporate the best information currently available to North
	Safety Products, and are derived from published sources generally believed to be reliable.  North makes no warranty
	or representation as to the accuracy, completeness or reliability of either the source material or the information
	resulting from the use of this program, and disclaims the implied warranties of merchantability and fitness for
	particular purpose, and all other warranties, express or implied.
	 The user assumes all risks, if any, arising out of the use of this program, and North assumes no liability for any
	direct, indirect, incidental or consequential damages arising out of the use or inability to use the program.
	 North reserves the right to change design, construction or formulation of its chemical cartridges or any of their
	components without notice to cartridge users of the effect of any such changes on service life or any cartridge
	change schedule derived from the use of this program.
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