Maintaining  the safety and reliability of pipelines has become one of the major tasks for pipeline owners and operators.
 
Assuring good technical condition of pipelines demands a trustworthy pipeline integrity assessment  system.
 
In CDRiA the key elements of  the pipeline integrity assessment system are: identification of features which may be a threat to the integrity of a pipeline, MAOP calculations and defect growth investigation.
 
MAOP calculations reveal  how the detected metal losses influence the pipeline operational parameters and safety of the pipeline. For every reported metal loss feature the value of maximum safe operational pressure (MAOP) is defined which determines whether a reduction of pipeline operational pressure is needed.  The calculations conform to the ASME B31G  and another international standards.
 
Defect growth investigation, based on  run comparison,  is a procedure which shows how  defects grow over time,  thus helps to point out the most potentially dangerous faults in the pipeline (eg  fast progressing corrosion).
 
Following the pipeline integrity assessment a pipeline rehabilitation program is developed and presented to the pipeline’s owner. The program prioritizes all dangerous defects and suggests a necessary pipeline repair and maintenance schedule.