MONPAC^TM can be applied during:

• First Hydrotest of a new Pressure Vessel according to ASME-V Part 12
• Requalification Hydrotest of a used Pressure Vessel
• On-line Pressurization (in-service with working fluid)
  

The method utilizes PAC's multichannel Acoustic Emission systems and sensors that detect the high-frequency signals resulting from deterioration in the structure when subject to stress. The systems have sufficient speed and resolution to ensure real-time, on-screen indications of the development of any defects.

The signals may result from local over-stressed areas, crack growth, corrosion products de-cohesion. According to evaluation criteria, developed after thousands of tests, MONPAC^TM gives 'color coding' for severity of emission and complete associated recommendations.

Advantages

• Rapid inspection (e.g. a 15m sphere is tested in approx. 3 days)
• Global monitoring (100% inspection, including welds, repairs, base metal etc.)
• On-line testing (can be tested with service product)
• Minor disturbance of insulation (insulation not removed, only few holes are cut locally)
• Reduction in inspection costs
• Reduction in downtime resulting from improved information about plant condition
• The Acoustic Emission test is performed in accordance with ASME - Section V, Article 12

 

 

 

Benefits of the method are largely seen in the reduced inspection costs and reduced downtime resulting from improved information about plant condition.  MONPAC is particularly effective on spheres and columns, and for tank shell integrity testing.  It is also used on complete process systems.  The method provides a "color coding" for severity of emission, complete with associated recommendations.

MONPAC^TM testing requires AE Instrument Training and Certification.  Only experienced AE practitioners quality for the MONPAC license, so the market is well identified, being limited to those companies that regularly practice the technology.

MONPAC^TM training courses are available to customers who have purchased the technology package.  Each course includes training in the MONPAC-PLUS technology package, software familiarization and a multiple-choice specific examination.