Monitoring Standards
Plant operators may also use PCME instruments to satisfy requirements focused on the ongoing performance and quality assurance of an instrument in an application including:
- PS-11 (US standard for PM CEMS)
- EN 14181 (European standard for CEMS)
- ASTM D7392-07 (US standard for Bag Leak Detection)
- RM-QG6 (UK guidance for calibration of CEMS)
- PS-1 (US standard for Opacity)
Types of particulate monitoring required by legislation:
Particulate CEMS: These instruments provide a continuous output of dust concentration in mg/m3 having being calibrated by the standard reference method of a gravimetric and isokinetic sample. The performance standards PS-11, EN 14181 (QAL1), ASTM-60 and EN 15859 place different demands on the relative accuracy, quality assurance features, cross interference immunity of the CEM and specify methodologies for assessing and auditing instrument performance.
Filter leak monitors: These instruments provide a trend of emissions from dust arrestment plant and indicate when there is a gradual or sudden change in emissions which is usually associated with arrestment plant failure.
The performance standards, BlmSchV 27, EN 15859 define performance criteria for filter leak monitors including quality assurance features, maintenance interval, relative accuracy and drift constraints.
Broken Bag detectors: These instruments are specified in US legislation to monitor arrestment plant failure. Consistent with the EPA guidance, instruments have a trend output (eg 4-20mA) and must be operated with manual or automatic drift check regimes.