Pre-Commissioning Services in KSA, from One Crew
Between mechanical completion and start-up, every system has to be tested, dried, inerted and closed up. We handle that whole sequence, so your project deals with one crew instead of several subcontractors.
Fewer hand-overs, fewer gaps
Pre-commissioning involves a chain of activities, and each hand-over between contractors is a chance for something to be missed: a blind left in, a joint reinstated without a gasket check, a system purged without proof. Our pre-commissioning services in KSA keep the chain in one team.
We work from your test packs: fitting blinds, running the hydrotest or local weld tests, dewatering and drying, leak testing and nitrogen purging. Our bolting crew then removes the blinds and reinstates the permanent joints to a calculated load.
Each test pack comes back signed, with test records, purge readings and joint records together, ready for your completions team.
The pre-commissioning activities we deliver
Taken together or individually, depending on your project split.
Test pack execution
Test boundaries confirmed, blinds fitted and tests run to the approved test pack.
Pressure testing
Hydrostatic tests, pneumatic tests where specified, and local weld tests for tie-ins.
Dewatering and drying
Water removed after testing and systems dried with air or dry nitrogen to the specified dew point.
Leak testing
Nitrogen and helium leak tests to prove joints before start-up.
Nitrogen purging and inerting
Oxygen removed to a measured target and systems held under nitrogen.
Reinstatement
Blinds removed and permanent joints reinstated with controlled bolting and records.
A typical pre-commissioning sequence
The order may change with the system, but every step is recorded.
Review test packs
We confirm boundaries, pressures and isolations for each test pack.
Blind and test
Blinds are fitted and the system is pressure tested and signed off.
Dewater and dry
The system is drained and dried to the specified dew point.
Leak test
Joints are leak tested with nitrogen or helium where required.
Purge and inert
Oxygen is removed and the system held under nitrogen.
Reinstate and hand over
Blinds are removed, joints reinstated and the test pack closed.
Where our pre-commissioning is used
New construction, expansions and major modifications.
New process units
Piping systems completed during construction.
Plant expansions
New trains and tie-ins to existing plants.
Pipelines
Pipeline sections tested, dried and inerted before first gas or product.
Utility systems
Cooling water, fire water, nitrogen and instrument air systems.
Hydrogen and ammonia projects
Systems with strict dryness and leak-tightness targets.
Fabricated modules
Skids and modules tested before or after installation.
The services inside pre-commissioning
Each activity also has its own page with methods and equipment.
Hydrotest
Hydrostatic pressure testing of piping, vessels and spools with calibrated pumps, gauges and recorders.
View hydrotestPneumatic & Helium Leak Testing
Pneumatic strength tests and helium tracer-gas leak detection for tight systems.
View pneumatic & helium leak testingNitrogen Purging
Inerting, oxygen-free purging, drying and nitrogen leak testing before start-up or after maintenance.
View nitrogen purgingFlange Weld & Valve Testing
Isolation testing of flange and in-line welds, and pressure testing of valves.
View flange weld & valve testingBolt Torquing
Hydraulic torque wrenches and stud tensioners applying a calculated bolt load, pass by pass, with a tagged record for each joint.
View bolt torquingFlange Management
Joint registers, bolt load calculations, tagging and records for every flange in a shutdown.
View flange managementPre-commissioning across Saudi Arabia
Our crews and equipment travel to plants and project sites in every region of the Kingdom.
Pre-commissioning services in KSA: common questions
What does pre-commissioning include?
It covers the activities between mechanical completion and commissioning: pressure testing, dewatering and drying, leak testing, purging and inerting, and reinstating joints, all recorded against the test packs.
Can you work as a subcontractor on our project?
Yes. We work to your test packs and quality plan as a subcontractor to EPC and construction contractors.
Do you dry systems after hydrotesting?
Yes. We drain and dry systems with air or dry nitrogen to the dew point your specification requires.
Who reinstates the joints after testing?
Our bolting crew removes the blinds and reinstates the permanent joints to a calculated load, with a record for each joint.
Have test packs to close?
Send the test pack list, system types and dates. We will reply with a crew plan and price.
- Phone+966 50 605 8927
- Emailalviqaisar@gmail.com
- BaseEastern Province, Kingdom of Saudi Arabia
- HoursOffice Sunday to Thursday, 7 AM to 5 PM. Field call-outs any day, any hour.