This training is a joint collaboration between the
Environment Agency and the Source Testing Association.
2. What’s it for?
The following training is an in-depth look at
isokinetic stack emissions monitoring. It focuses on sampling to the
requirements of the European standard for measuring particulates in stack
gas emissions (EN 13284-1).
It provides trainees with the following information
required to carry out isokinetic sampling:
assessing suitable sample locations
determining sample points and positions in a sample plane
calculating a K-factor
completing a particulate test data sheet.
3. Who should use it?
The training programme assumes that the trainee is
familiar with the basic principles of stack emissions monitoring.
It is aimed at:
- stack emissions
monitoring staff, who have reached mcerts Level 1
- process operators
responsible for monitoring
- regulatory officers.
4. Overview of contents
Schematic of plant
The opening page shows a schematic of the stack gas
ducting at a generic process on an industrial plant.
The trainee can enter parameters for stack gas flow
rate and velocity on this page. Changing this parameters shows the
relationship between stack gas flow rate, velocity and cross sectional duct
The schematic shows three possible locations where
stack emissions monitoring could be carried out. By “clicking” on each
location the trainee is taken to pages containing further information about
each sample location.
Details of sample locations
For each sample location there is a photograph and a
diagram of a sample plane. An assessment is made of the:
- type of location
- the suitability of
each location in terms of recommended hydraulic diameters
- number of sample
- access to sample
Determining the number and location of sample points
For each sample location there is further information
on determining the:
- number and position
of sample points
- the probe length
required for sampling
The following page provides data for a traverse of the
sample location. An assessment of whether the location complies with the
isokinetic sampling standard is also provided.
Determining the K-factor
Only one of the sample locations is compliant. For this
location the training continues by providing information on how the k-factor
Data from a particulate test
The next page provides data from a completed
spreadsheet for a sample run at the compliant location.
Using the interactive part of the training programme
Besides assessing pre-loaded fixed data for the sample
locations, the training has an option for entering data into a series of
tables. This enables the trainee to go through the procedure outlined above
using their own data.
5. Further information
Further information on sampling locations and
isokinetic sampling is provided in Environment Agency Technical Guidance
Note M1, which is available from
If you have any comments on this training programme
please contact Rupert Standring at
click here to fill out the feedback form