Control technicality

With a real Technical Department, STS has necessary control material and can rely on its NDT Inspectors and IWE Welding Engineer to meet internally all of your quality requirements. Some control cannot be carried out by ourselves consequently, STS subcontracts it to well-known and experimented organizations.

Internal controls

  • Visual inspection
  • Liquid Penetrant Inspection (LPI)
  • Magnetic Particle Inspection (MPI)
  • Welds ferrite rates inspection (ferritscope)
  • Hydraulic resistance tests
  • Dew point inspection by drying
  • Dimensional inspection
  • Inspection by endoscopy
  • Roughness measure
  • Bubble tight inspection

Subcontracted controls

  • 1 IWE Welding Engineer
  • 4 NDT Inspectors, certified on Level 2 ISO 9712 Liquid Penetrant Inpection, whose 1 Inspector also certified on Level 2 ISO 9712 Particle Inspection

Control activity organization

  • X-ray inspection
  • Ultrasonic inspection
  • Material analysis by PMI XRF and SEO
  • Helium leak test
  • Hardness test

Ultrapure water

  • Ultrapure water production meeting grade A of EDF specifications.

Material made available

  • Measuring instruments : measuring tapes, decameters, reamers and callipers
  • Manometers for hydraulic tests, up to 600 bar
  • Torque wrenches, from 0 to 1500 N.m
  • Luxmeter/Radiometer for liquid penetrant and magntic particle inspections
  • Thermometer with surface probe for liquid penetrant and magnetic particle inspections
  • Thermo-hygrometer to measure dew point
  • PH meter to measure ultrapure water pH that we produce
  • Conductivity meter to measure ultrapure water conductivity that we produce
  • Multimeter clamp to record welding parameters
  • Fisher ferritscope to measure ferrit rate of welds
  • Negastoscope + Densitometer to proofread radiograms after welds x-ray inspection
  • Thickness gauge dry paint film
  • Roughness meter
  • Endoscope with a probe of 6m in length

All of our inspection, measuring and test equipment are calibrated in accordance with the ISO 9001 v.2015.

Norms and certifications

Certification ISO