• Critical joint consultation, Inspection & Monitoring – Supply of competence personnel, Technical support, and advice
  • Controlled bolting works (MTW, HTW, HBT) – Hot bolting/Odd Bolting
  • On-Site Machining – Cold cutting and bevel
  • Flange resurface, repair – weld build up & replace
  • Thorough inspection and supervision by competent personnel at 3 major stages (recommended for best result)

Stage 1: Preparation-material selection & purchasing, joint identification (line walk-visual inspection)

Stage 2: Installation – witness and inspection on site during job execution (Procedure & method of tightening-provide optimum torque & tensioning value)

Stage 3: Handover – final report and database record-traceability ensured & easily accessible

  • Flange Management software (ATW – INTEGRITY PRO)-comprehensive database system
  • Leak Testing (Hydrostatic, N2, Helium)
  • Leak sealing (On-line using clamp / Pipe Freezing-temporary pipe isolation by creating freeze plug)
  • Real-time condition-based monitoring (Live monitoring on critical joint)
  • Bolt Load verification (UT Tools)
LAPP 3 pillars

Typical elements (as per EI Guidelines) for Joint Integrity assurance are as follows:

  1. understanding of the operating environment
  2. continues with design
  3. selection of the flange components
  4. setting of assembly specifications
  5. establishment of best procedures
  6. appointment of competent personnel
  7. quality assurance traceability through complete documentation (using sophisticated and systematic software for database)
  8. finishes with meeting the goal of leak prevention
bolted vs welded joints