Appendix C - NYTEST Equipment Audit Criteria
Criteria for Equipment Audit Failures
Gas Audit - The audit gases are flowed through the sample system. If the failure criteria is met on the first run, a second run is made through the sample system. If the failure cirteria is met on the second run, a run is made through the calibration port with the on-board gases. If the failure criteria is still met the system fails.
Failure Criteria - If any of the concentration readings for the high and low gases exceed 10% of the bottle value or the zero gas values exceed 10 ppm for any gas, the result is a failure.
Vmas Flow Check - The Vmas flow displayed on the equipment is compared to the flow measure by the use of a smooth approach orifice (SAO). The flow is also recorded.
Failure Criteria - If the flow displayed varies by more than 10% of the flow measured using the SAO or if the flow displayed is less than 200 scfm, the system fails.
Gas Cap Tester - The gas cap tester is supplied with a pass master, fail master, and nine adapters for testing. The auditor checks for the presence of all equipment and then performs a gas cap tester calibration.
Failure Criteria - All equipment must be present (tester, pass and fail master caps, nine adapters) and the tester must pass calibration.
On-board Calibration Gas - The calibration gas is required to be BAR97 certified. New York has approved the use of Systech's zero air generator which can be subsituted for zero gas. There must be zero, high, and low gas present.
Failure Criteria - All gases must be present (unless zero air is replaced by an approved zero air generator). All gases must be BAR97 approved and the gases must not have expired.
System Flow Check - A flow meter in attached to the end of the sample probe and the flow is measured.
Failure Criterion - The system flow measured must be more than 5 liters/minute.
System Leak Check - A system leak check is performed.
Failure Criterion - The system must pass the leak check.
