Service · Process Engineering & Pre-Commissioning

Process engineering & pre-commissioning.

Multi-discipline process engineering plus a full pre-commissioning suite — for new construction, shutdowns and operating assets.

Overview

From design to start-up.

XDS process engineers support new construction, shutdowns and operating assets across oil & gas and industrial sectors. We size, model and document process systems against international codes, with the same engineers later supporting pre-commissioning and commissioning.

Pre-commissioning closes out construction: chemical cleaning and degreasing, lube-oil flushing with particle monitoring, hydrostatic and pneumatic pressure testing, leak testing, nitrogen purging and N₂/helium leak testing.

A dedicated mobile boiler can be deployed for steaming and decontamination of vessels and pipework.

Capabilities

Six process & pre-commissioning workstreams.

Process engineering, chemical cleaning, lube-oil flushing, pressure testing and nitrogen services.

01

Process Engineering

Studies, P&ID development, FEED-level input, HAZOP support and engineering documentation.

  • Process design basis
  • P&ID development & review
  • FEED-level technical input
  • HAZOP scribe / chairman
02

Chemical Cleaning

Chemical cleaning and degreasing of process pipework, vessels and tanks.

  • Mill-scale & rust removal
  • Hydrocarbon residue removal
  • Acid / alkaline cleaning per spec
  • Documented procedure & disposal
03

Lube-Oil Flushing

High-flow flushing of rotating-equipment lube systems with particle monitoring.

  • High-flow flushing rigs
  • Particle counting per ISO 4406
  • Documented before/after counts
  • Targeted cleanliness levels per spec
04

Pressure Testing

Hydrostatic and pneumatic testing of vessels, piping and pipelines.

  • Vessel & pipework hydrotest
  • Calibrated pumps & dead-weight
  • Pressure-vs-time records
  • Risk-assessed pneumatic tests
05

Nitrogen & Helium Leak

Nitrogen purging plus N₂/helium leak testing for high-sensitivity tightness.

  • Pre-startup oxygen displacement
  • Hydrocarbon displacement before maintenance
  • N₂ leak testing for tightness
  • Helium leak testing — high sensitivity
06

Mobile Boiler & Cleaning

Mobile boiler deployed for steaming and decontamination plus high-pressure water jetting.

  • Mobile boiler unit
  • Controlled steam quality & flow
  • High-pressure water jetting
  • Tube & tank cleaning
In action

From the field.

Need a closeout test scope?

Send a test pack, P&ID or scope — we respond within one working day with a quote, mobilisation plan and equipment list.