Quality System Benefits for Stack Testing

Dissolved probe or nozzle material contaminating sample.	Eliminate sources of probe and nozzle contamination.	Green tint to probe wash beaker. Also, for metals test look for probe parts containing metals of interest in contact with the sample or wash.	Positive particulate and metal emission bias could result in a reported emission many time actual emissions. Error always penalizes source operator	Failed Compliance, NOV, Retest, Fail Guarantee, Unneccassary APC Capital expendature. Bad PR . Reduce production or close plant.
Gas flow measurement bias for S-Type Pitot.	Geometrically accurate pitot for every test.	Pitot tip with burrs or misalignment	Up to + 15% total gas flow error. Error generally penalizes source operator.	Increased reported total pounds per hour emissions by up to 15%. Buy more or sell fewer emission credits, reduce production.
Accurate measurement of turbulent flow.	Cyclonic flow determination on every stack and use 3D flow probe based on value determination process.	Cyclonic flow check data sheet in report.	up to + 25% total gas flow error. Error generally penalizes source operator.	Increased reported total pounds per hour emissions by up to 15%. Buy more or sell fewer emission credits, reduce production.
Analytical instruments shipped from job to job without checkup or cleaning.	Bench check instruments after each job with the instrument technicians card attached to the top.	Ask to see the instrument log repair history file and bench calibration.
Heated sample lines shipped from job to job without checkup or cleaning	Flush HSL after each job then using CO and THC analyzers to confirm that the residual levels are non detect.	HSL shipping box label. HSL maintenance history file and cleaning test chart.
Variation caused by field contamination.	Pretest field blank for every test, even if not required by the test method.	Extra sample train a the test location with full setup and recovery.
Contamination of sample during probe insertion or removal.
Port air in-leakage contamination.		Gloves in ports and low gas temperatures at points nearest ports
Contaminated blanks.	Instrument grade reagents and new glassware for every reagent preparation.	Lab blanks that are more than the sample.
Negative sample weights.	We pre-condition filters before use and select the filter media will not be attacked by the compounds present in the sample gas.	Negative sample weights.
Field delays and problems caused by test equipment failure.	Rugged and dependable test equipment. Is it engineered to eliminate failure? Is it well maintained?	Equipment failure contingency plan.	Possible bias error but bigger concern should be fabrication to replace lost data.	Delayed testing. Prolonged process operation at test condition, such as reduced load,could be very costly.
Lost of computer stored test data.	Back-up all project-related computer files on a DAILY basis in field and office.	Field computer backup disk which is stored off site. Ask to see office backup system.	No bias error unless data is fabricated to replace lost data.	Repeat of testing program may be needed but may not be possible in special situations.
Making Corrections to Hand-Recorded Data	Data Recording Policy plus detailed procedures for data integrity and data validity.	Ask to see Policy and Procedures regarding data recording and handling.
Documentation storage and retrival system
Job log	Field
Safety first	Safe work habits.	Safety is Cleanair's highest priority! Our aim is zero safety incidents.	NA	An accidents can cause major problems. We work to eliminate this possibility.
Dry gas meter calibration drift to unacceptable value.	Field monitoring of dry gas meter's performance on an on-going basis.


	The CleanAir Quality System
		We have similiar benefit lists for: Stack Testing - Instrument Rental - Express Equipment Sales - Consulting Services - Analytical Services - Engine Services - Flow CEM - Instrument Repair & SCR Tuning *Use the table slide bar to see more benefits*