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Pressurized or vacuum operating equipment represents critical infrastructure points of the production process for chemical, petrochemical pulp/paper and other industries.

Periodic maintenance inspections carried out by BBL’s well qualified staff provide important details for the equipment evaluation, avoiding downtime and accidents.

Periodic inspections on boilers and pressure vessels are complied according to the local Ministry of Labor and Employment policy NR-13 and other national and international recommendations, applied to any type of equipment in use.

 
Periodic maintenance inspections involve:
• Examination of original documentation
• Equipment internal and external visual examination
• Remaining thickness measurement by ultrasonic system

  
 

     
   
 
 

• Conducting nondestructive testing
• Calculating the Maximum Allowed Working Pressure
• Hydrostatic or tightness testing
• Examining pressure relief devices, valves, coatings and other accessories

These techniques are also utilized for the inspection of equipment during refurbishment, with special stress on welding procedures and welders’ performance qualifications and nondestructive testing. In these cases it is also advisable to verify the welding procedure and conduct testing to check cracks, lack of fusion or penetration in the welding root.

The nondestructive testing (NDT) methods and techniques BBL can provide are of primary importance to back up maintenance and refurbishment inspections. They are carried out by our certified personnel, and BBL can supply all necessary NDT equipment.
 
 
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Besides utilizing traditional ultrasonic systems, radiography, magnetic particle and liquid penetrant testing methods, BBL is the pioneer and leader in the market for remaining thickness measurement on heat exchanger tubes and boilers through IRIS testing (Internal Rotary Inspection System). In addition, we can also provide other special testing such as B-SCAN, acoustic emission, eddy current, radar, instrumented pig and others, subject to previous analysis.
BBL engineering has large experience in structural calculations according to national and international standards. This is also true for equipment integrity and remaining lifetime assessment, calculations, analysis and specifications to back up technical decisions required to re-start equipment operations.