SCR inspection and survey
of operational & maintenance aspects

A deNOx installation is far more

than just a catalyst

Soot-blowing, sealing system and ammonia injection are examples of crucial elements of an SCR plant that can jeopardize its proper functioning. Regular in-depth inspection of your installation by a specialist delivers essential information, whether you’re looking to fix an issue, or prevent problems arising.

The priceless value
of an on-site inspection

Our extensive operational experience in the field has proved that in-depth inspections detect potential problems before they occur, and make it possible to put in place an effective solution before the situation gets any worse. For SCR plants, our inspection coverage includes:

  1. the SCR reactor itself
  2. the catalyst layers in each reactor
  3. the complete sealing system
  4. the cleaning system
  5. the ammonia injection grid (AIG) system

Examination of these areas ideally takes place immediately after shutdown of the SCR installation, before the cleaning stage. This makes it possible to visually evaluate the actual operating conditions of the cleaning system.

On-site inspection can detect problems on time and highlight
a series of valuable information to improve operation.

Catalyst sampling

Getting reliable results from an SCR plant assessment requires adequate and representative sampling of catalysts. This sampling is carried out by our experts, according to standards and best practices, with a focus on assuring representativity and the quality of the process over time.

Getting reliable results from an SCR plant assessment
requires adequate and representative sampling of catalysts.

Survey of design,
operation and maintenance data

Understanding the original design, operation and maintenance data is also key to assessing the performance of the SCR installation. Combined with catalyst test results, this kind of survey can identify possible improvements to the non-catalyst elements of the installation which contribute to extending the catalyst lifetime.

Our broad experience of SCR operation is such that in these non-catalyst areas our experts can also identify early indicators of underperformance which may go unnoticed by plant operators. Typically, such aspects are reviewed jointly with your staff on site, as part of the inspection project.

A survey of design, operation and maintenance data can identify possible
improvements to the non catalyst elements of the installation.