If there is a stack at your site, there is a strong chance you require a technical approval for emission quality standards.
What usually goes wrong is not understanding the obligation itself, but understanding how many emission sources are actually present.
There are more sources than usually registered
Asked to list emission sources, most companies name the most visible one. The complete list is usually longer:
Boilers, the most common source in industry.
Generators, including those used only during power outages. Capacity and frequency of use affect treatment, but their existence must still be registered.
Ovens, kilns, and furnaces in food, ceramics, and metals.
Incinerators, which carry their own, stricter provisions.
Process stacks from activities releasing vapour or reaction gases.
Ventilation systems discharging dust or chemical vapour from production areas.
The practical rule is straightforward: if something leaves the site through a directed duct, it needs to be accounted for. What is not registered now will still be counted during supervision, and at that point your position is considerably weaker.
Who must hold one
Activities required to hold an AMDAL or UKL-UPL and which discharge emissions must hold a technical approval and subsequently an operational feasibility certificate.
Treatment varies by source type and capacity, particularly for standby generators that operate rarely. But concluding on your own that your generator is exempt, without a clear basis, is a risk out of proportion to the effort of confirming it.
What the technical study covers
Identification of all emission sources. With capacity, fuel type, and operating hours per day.
Emission load calculations. How much is expected to leave each stack.
Applicable quality standards. These differ by activity type and source type.
Control equipment design. Where calculations show emissions exceeding standards, control equipment must be specified with calculated efficiency, not merely named.
Stack specifications. Height, diameter, and the item most often overlooked: the sampling port and access to it.
Monitoring plan. Parameters, frequency, and method.
Sampling ports: a small problem that costs a lot
This deserves its own section because it very frequently delays the operational certificate.
A stack must have a sampling port at a specified position, at sufficient distance from bends or flow disturbances, so that measurements represent actual conditions. It must also have safe access for the sampling officer: a ladder, a working platform, and guardrails.
A stack built without accounting for this ends in modification. And modifying an installed stack, sometimes at height, is far more expensive and disruptive than preparing for it from the start.
If you are at the design stage, this is one of the cheapest things you can secure today.
From technical approval to operational certificate
The technical approval is issued against a design. The operational certificate is issued against evidence that the design works.
Once the installation and stack are built to the approved design, emissions testing is carried out by an accredited laboratory. If results meet the quality standards, the operational certificate can be applied for.
If they do not, what needs fixing is the installation, not the figures. Test data leaves a trail at the laboratory, and non-compliance will resurface at the next round of monitoring.
After the certificate is issued
Attached obligations: periodic emissions monitoring at the prescribed frequency, records of operating hours for each source, records of fuel consumption, and periodic reporting.
For certain large-capacity sources, there is an obligation for continuous monitoring using equipment connected to the system, rather than periodic testing.
The most frequent field finding: testing carried out only once a year when the requirement is more frequent, and no operating-hour records at all, leaving nothing against which to verify the report.
If the stack has stood for years
Many plants were built before these provisions applied and still have their original stacks. The sensible step is to begin with testing: measure current emissions to establish where you stand.
If results already meet the standards, the work is completing documentation and preparing a compliant sampling port. If they do not, a phased remediation plan is needed, and preparing one before a finding is made always produces a better position.
We have prepared an emissions technical standards approval for PT Sinar Meadow International Indonesia, and a summary is available on our portfolio page.
Start by listing the sources
The most useful first step, and it costs nothing: list every emission source at your site, with capacity and fuel type. Including the ones rarely used.
Send that list on WhatsApp. From it, it is already possible to see which sources trigger a technical approval requirement and which do not, before you spend anything on testing.
