AUDITING AND REPORTING
Reviewing and Continual Improvement
The EEM Team should conduct energy/emissions audits in accordance
with the schedules identified in the action plan. The audits should be designed to track
the progress of implementation of the action plan, identify further opportunities for
improvement and identify whether overall targets have been met.
Suggestions and opinions from staff members could also be collected
as part of the review to understand where problems have been encountered and to provide an
opportunity for members of staff to suggest improvements for the plan. An example audit
checklist is presented in Appendix D.
Comparing Audit Findings with Reduction Targets
Audit findings should be compared with the action plan and reduction
targets to track implementation and performance improvements. An audit report should be
prepared to summarize achievements and identify areas for improvement. Effectiveness of
each control measures should be evaluated, as far as practicable, to provide information
for further improvement and establishing further reduction targets for subsequent periods.
Companies should seek continual improvement.
If your operations involve combustion or heating processes, and your
action plan includes measures to reduce direct emissions, continuous or regular monitoring
of key air pollutants should be considered as a tool to track performance improvements.
Monitoring of emissions is an effective way to measure the progress
of implementation of an EEM Plan, especially for heavy industries that use combustion or
heating processes. Different types of air pollutants require different measurement
methodologies. Typically, for large industries or industries with significant air
emissions such as power plants, continuous emissions monitoring systems (CEMS) are
suitable for monitor emissions. For small to medium sized industries, regular emissions
monitoring for each air pollutant is recommended depending on the type of air pollutants
emitted from the industry.
Continuous Emissions Monitoring System
Generally, all major combustion facilities are encouraged to use CEMS
as it is a useful tool to gather process emissions data for environmental compliance
demonstration, process control and optimization. However, as the investment and
maintenance cost of CEMS is high, CEMS is generally more suitable for large industries
(e.g. power plants) or those industries which emit high levels of air pollutants or air
toxins such as incineration facilities, cement plants, etc.
CEMS generally refers to a packaged system of gas analyzers, gas
sampling systems, temperature, flow and opacity monitors that are integrated with a data
acquisition system to demonstrate environmental regulatory compliance of various
industrial sources of air pollutants. Technical requirements and approved analytical
techniques for continuous emissions monitoring systems are available on the U.S.
Environmental Protection Agency (US EPA) Website:
The most widely used type of continuous emissions monitoring is an
extractive CEMS, in which a sample of gas is continuously drawn from the process point,
filtered, transported, conditioned and presented to a gas analysis system. Gas
concentrations are measured, recorded and stored as data. The data is used to generate
reports, alarms or control some aspect of the industrial process.
Regular Air Emissions Monitoring
Regular air emissions monitoring is helpful to monitor the
performance of the plant operation and the air control measures. Typically, different
monitoring methodologies are used for monitoring different types of air pollutants. In
general, air emissions monitoring follows the US EPA methodology, which is widely used as
a guideline for measurement. Further information on detailed monitoring methodologies can
be found at www.epa.gov/ttn/emc/promgate.html.
In Guangdong Province, stack emissions monitoring should follow
measurement standards specified by the State Environmental Protection Agency (SEPA) or
Guangdong Environmental Protection Bureau (EPB). The list of measurement methods
stipulated by SEPA or Guangdong EPB can be found on their respective Websites, i.e., www.ep.net.cn/cgi-bin/dbbz/list.cgi.
The measurement method for typical air pollutants are presented in Appendix E.
The performance audit findings should be summarized annually or
bi-annually to report achievements of the energy / emissions reduction programme. Under or
over achievement of targets should provide a basis for developing the subsequent year's
The summary report should include:
- Reduction targets
- Reduction actions
- A comparison of the quantity of emissions made and energy consumed and
saved with the previous year's performance
- Details of performance against each reduction target (e.g. performance
as a percentage of the target)
- An Action Plan for the following year
A template for the performance report is provided. Endorsers of
the Clean Air Charter are encouraged to report their energy/emissions reduction
performance, where applicable.
REPORT ON ENERGY/EMISSIONS
REDUCTION PERFORMANCE (PDF format)
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