Did You Know That Your SCR System Holds Significant Untapped Performance Potential?

Your SCR system contains far more performance potential than most operators realise. Even small deviations in dosing accuracy, temperature control, catalyst condition, and system calibration can have a disproportionate impact on fuel consumption, NOx compliance, maintenance costs, and reactor lifetime.

Below are ten key Did you know? insights that highlight where hidden inefficiencies typically arise - and what targeted optimisation can achieve.

10 Things You May Not Know About SCR Performance

1. Did you know that SCR performance decreases when the urea injection system is not calibrated?

Incorrect urea/ammonia dosing reduces NOx reduction efficiency and increases operational costs.

We offer precise ammonia/urea dosing system calibrations to keep your SCR operating at optimal reduction rates.

2. Did you know that catalyst elements lose activity not only from age but also from fuel quality and engine load patterns?

Vanadium and zeolite catalysts degrade faster when exposed to high sulfur, dust, or low-load operations.

Our SCR performance check identifies catalyst deactivation trends early and helps you plan replacements before they impact compliance.

3. Did you know that SCR reactors can clog due to soot, ash, and urea deposits?

This reduces exhaust flow and increases backpressure, affecting engine efficiency.

We provide on-board SCR cleaning and condition surveys to restore performance without off-hire time.

4. Did you know that IMO NOx compliance requires documented evidence of SCR performance over time?

Many vessels fail audits simply due to missing documentation - even when the SCR works correctly.

We deliver complete compliance reporting & documentation packages so you are always inspection-ready.

5. Did you know that incorrect urea concentration can damage the injection system and reduce NOx reduction efficiency?

Using off-spec AUS40 or contaminated urea leads to crystallisation and corrosion.

We offer urea quality testing and system flushing to protect your injection equipment.

6. Did you know that poorly performing SCRs increase fuel consumption?

When backpressure rises or NOx reduction drops, operators typically increase load or temperature, which burns more fuel.

We optimise SCR settings to recover engine efficiency and reduce fuel costs.

7. Did you know that many SCR control systems run outdated software?

Old logic or sensor calibration errors can increase ammonia slip or cause unnecessary alarms.

We provide control system upgrades and tuning to stabilise operations and lower OPEX.

8. Did you know that SCR performance depends heavily on exhaust temperature?

Below optimal temperature, NOx reduction drops sharply.

We verify temperature profiles and adjust injection strategy for efficient operation across your load range.

9. Did you know that a mid-life SCR health check can extend the catalyst lifetime by several years?

Predictive inspections help avoid unnecessary catalyst replacement and unexpected performance dips.

Our SCR health assessment includes pressure drop, activity measurement, and flow distribution checks to maximise lifecycle value.

10. Did you know that many SCR issues originate from upstream engine conditions?

Oil carryover, turbocharger wear, and poor combustion can poison catalysts.

We assess the full system - from engine outlet to reactor - to prevent avoidable catalyst damage.