Tru-Tec NDT were contracted to perform inspections on 150 metres of drill stems, subs and Kelly’s for a refurbishment program.

The drill elements were decommissioned and pre-cleaned prior to inspections being carried out in accordance with API-RP-7G-2 with the inspection requirements conforming to Annex B Table B.1- Pipe-body Field Inspection Available For Used Drill Pipe (UDP). The acceptance criteria was in accordance with the “Moderate Inspection”.

Tru-Tec-NDT Professional Conventional and Advanced Non Destructive Testing Solutions Inspections South Yorkshire Drill Inspection

API Moderate Drill Inspection Tru-Tec NDT were contracted to perform inspections on 150 metres of drill stems, subs and Kelly’s for a refurbishment program.

In order to comply with the inspection requirements, Tru-Tec NDT undertook the following examination processes:

Tru-Tec-NDT Professional Conventional and Advanced Non Destructive Testing Solutions Inspections South Yorkshire Drill Inspection
  1. OD Gauging Conducted using calipers and Faro laser scanners as per sections 10.2.5
  2. Full Length Wall Monitoring and Ultrasonic Testing Including lamination, corrosion/erosion, and angled inspection carried out on 100% of material as per sections 10.3.6, 10.5, 10.6, 10.10
  3. Magnetic Particle Inspection of Critical Areas, pin threads and Outer Diameter conducted using Axial Current Flow and Threading Conductor to ascertain discontinuities running in anydirection. As per API-RP-7G-2, the Magnetic Particle Inspection was conducted using Fluorescent ink and AC waveform to allow demagnetisation to be conducted readily and easily.
  4. Visual Inspection of bevels, seals, threads, weight code/grade markings and outer and inner diameter conducted externally and internally with the use of borescopes.
  5. Inspection of hard banding Conducted using Magnetic particle inspection and Visual Inspection.
  6. Check for box swell and pin stretch Conducted using rules, calipers and Faro Laser scanners.
  7. Check pin and box OD’s and eccentric wear Conducted using rules, calipers and Faro Laser scanners.
  8. Check pin and box-tong space Conducted using rules and Faro Laser scanners.

The inspection techniques conducted by personnel, resulted in a time efficient and cost-effective turnaround of the components and returned to service promptly.

The clients were also provided with Tru-Tec NDT’s effective reporting systems covering all areas of inspection undertaken to incorporate 3D imaging, with colour coding schemes throughout areas with loss of material, discontinuities and wear.