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Inspection Testing & Calibration

Certified third-party safety relief valve (PSV) POP testing, hydrostatic pressure vessel inspection, ultrasonic thickness gauging, and Non-Destructive Testing (NDT).

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Inspection Testing & Calibration Services
SAFETY & THIRD-PARTY CERTIFIED

Certified Vessel, Safety Valve & NDT Testing

REGULATORY SAFETY COMPLIANCE

Inspection Testing & Calibration

PAK METROLOGY SOLUTIONS delivers certified third-party inspection services for industrial boilers, pressure safety relief valves (PSV), pressure vessels, and NDT thickness gauging across Pakistan.

Our certified inspection reports satisfy Factory Inspector regulations, insurance compliance audits, and ISO 17020 quality management systems.

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SAFETY INSPECTION SERVICES

Certified Vessel, Valve & NDT Testing

Safety Relief Valve (PSV / PRV) Testing

On-site mobile testing bench and laboratory POP test calibration of pressure safety valves, relief valves, and vacuum breakers up to 300 bar.

  • Set Pressure (POP Test) & Seat Tightness Testing
  • Reseating Pressure & Blowdown Reset Verification
  • Lapping, Disc Polishing & Spring Replacement Servicing
  • Third-Party Certification for Boiler Inspector Audit Compliance

Pressure Vessel Hydrostatic & Pneumatic Testing

Proof pressure testing of boilers, air receivers, heat exchangers, storage tanks, and high-pressure process piping loops using calibrated test rigs.

  • Hydrostatic Proof Pressure Testing (1.5x Operating Pressure)
  • Pneumatic Pressure Hold & Leak Decay Rate Calculation
  • Steam Boiler & Compressed Air Receiver Structural Integrity Audit
  • Calibrated Pressure Chart Recorder Data Dossier Generation

Ultrasonic Thickness Gauging & NDT Inspection

Non-Destructive Testing (NDT) to evaluate wall thinning, corrosion, and structural integrity of tanks, piping, and pressure vessels without shutting down plant operations.

  • Ultrasonic Thickness Measurement (UTM) for Corrosion Mapping
  • Dye Penetrant Testing (DPT / LPT) for Surface Crack Detection
  • Magnetic Particle Inspection (MPI) for Weld Integrity
  • Visual Inspection (VT) & Endoscopic Boroscope Pipeline Audits

Third-Party Safety Audit Certification

Comprehensive third-party safety reports for factory inspector compliance, insurance audits, and environmental health & safety (EHS) certification.

  • Factory Inspector & Civil Defense Safety Dossier Support
  • Fitness for Service (FFS) & Remaining Life Assessment (RLA)
  • Emergency Valve Tagging & Sealing Inspection
  • ISO Inspection Standard Protocols
FREQUENTLY ASKED QUESTIONS

Inspection & Testing FAQs

Answers regarding pressure safety valve pop-testing, NDT inspections, and pressure vessel certifications.

Which international codes govern your Pressure Safety Valve (PSV) testing?
We test and certify Safety Relief Valves strictly in compliance with ASME Section VIII Boiler and Pressure Vessel Code, API 520, API 526, API 576, and ISO 4126 standards.
What Non-Destructive Testing (NDT) services do you provide on site?
Our Level II NDT inspectors perform Ultrasonic Thickness (UT) gauging, Dye Penetrant Testing (DPT), Magnetic Particle Inspection (MPI), and Visual Inspection (VT) for tanks, boilers, and high-pressure piping.
Can Safety Valves be pop-tested and calibrated on-site during plant turnarounds?
Yes! We deploy our mobile skid-mounted pneumatic/hydraulic valve test rigs to your facility, allowing on-site lap dressing, set-pressure adjustment, pop testing, seat tightness testing, and lead sealing with zero delay.
How often should boiler safety relief valves be tested and certified?
National boiler regulations and industrial insurance standards generally require annual (12-month) inspection, bench pop-testing, and re-certification for steam boiler safety valves.
Are third-party inspection certificates provided for factory safety audits?
Yes, every tested valve or pressure vessel is issued a comprehensive Third-Party Inspection Certificate including cold differential test pressure (CDTP), backpressure data, seat leakage results, and serial traceability tags.
What maximum test pressure capabilities do your test rigs support?
Our test rigs support hydrostatic pressures up to 700 bar (10,000 PSI) and pneumatic nitrogen testing up to 300 bar (4,350 PSI), accommodating safety valve sizes from 1/2" up to 12" flange connections.

Need urgent PSV testing or plant shutdown inspection support?

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