THE SOURCE TESTING ASSOCIATION ANNUAL GUIDE 2011
Stack emission monitoring: getting it right – design for new plants
It is essential that plant designers take account of stack emission monitoring at the design stage to comply with MCERTS requirements for Continuous Emission Monitoring Systems. We look at the main aspects that should be considered
and quality. MCERTS covers the product certification of monitoring systems, the competency certification of personnel, the accreditation of laboratories and the provision of third-party inspection services. In stack emission monitoring the importance of the location of equip- ment and sampling facilities is paramount. The first Environment Agency MCERTS scheme was introduced 13
T
years ago. It covered the certification of Continuous Emission Monitoring Systems and was launched in March 1998. Thirteen years later the scheme boasts over 100 certified systems.
The standard covers extractive stack emission monitoring instru- ments and cross-stack or in-situ monitoring instruments, and initially focused on large combustion plant, incinerators and processes using solvents. The first certificates were issued in 1999 for systems supplied by a number of UK manufacturers. The STA has worked closely with the Environment Agency to develop
MCERTS, which has become a mandatory requirement in recent PPC permits issued to process operators. To view the range of schemes and approved equipment visit
www.mcerts.net.
While the technology for instrumentation used to measure emission has not progressed over the years, the electronics and computer system have advanced considerably, enabling the range of use to be expanded. One major factor, however, is that stack emission measurements require defined and stable flow conditions at the sample location. This allows the velocity and concentration of the measured component in the stack emission to be determined. If suitable sampling facilities are not
he Environment Agency (EA) established its Monitoring
Certification Scheme (MCERTS) to deliver environmental measurements that meet its requirements for suitability
’‘
The sample location must be positioned so that there are stable flow conditions, allowing representative samples to be taken
Access ports must be big enough for the insertion and removal of equipment, and should have a minimum diameter of 125mm
4 Source Testing Association Annual Guide 2011
Measurement ports must be installed at a suitable height to the platform, so that the sampling equipment can be manoeuvred
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44