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Eastern Province · Nitrogen Purging

Nitrogen Purging Services in Abqaiq

Abqaiq handles enormous hydrocarbon volumes. Nothing is opened there until it has been purged and proven gas free.

Nitrogen Purging in Abqaiq

Purging before and after work in Abqaiq

Stabilization trains, pipelines and manifolds at Abqaiq must be cleared of hydrocarbon before maintenance and inerted before they return to service. Nitrogen purging in Abqaiq provides both, along with nitrogen leak testing of joints tightened by our bolting crews.

Calibrated analysers confirm each stage, and every reading is recorded so your operations team has proof that the system is inert or dry.

Most nitrogen purging jobs in Abqaiq are part of a wider joint repair, so the same crew can also handle bolt torquing in Abqaiq and the other services below. For methods, equipment and standards, see our main nitrogen purging services in KSA page.

Plant piping with valves and flanged connections
Nitrogen Purging for plants in Abqaiq
Typical jobs

Nitrogen Purging jobs we do in Abqaiq

Work we are regularly asked for at crude processing, pipelines sites in and around Abqaiq.

01

Manifold gas freeing

Purging pipeline manifolds and launchers before cutting and tie-in work.

02

Blanketing

Holding equipment under a slight positive nitrogen pressure while it waits for start-up.

03

Drying after hydrotest

Dry nitrogen passed through until the outlet dew point meets specification.

How it works

Our nitrogen purging process in Abqaiq

Four steps, run under your permit-to-work system and recorded for your files.

  1. Plan the purge

    We set the volume, method, sample points and target with your operations team.

  2. Set up supply

    Liquid nitrogen with vaporisers or cylinder packs are positioned with relief protection.

  3. Purge and sample

    Flow and pressure are controlled while readings are taken at agreed points.

  4. Confirm and record

    Consecutive readings meet the target, are witnessed and handed over in writing.

Mobilization

Getting a nitrogen purging crew to Abqaiq

Abqaiq is a short drive inland from Dammam. Security is strict, so we arrange passes and inductions well before the job.

Machines, tools and consumables are checked against your scope before departure, and the crew arrives with PPE, permits planned and the paperwork your site asks for.

Calibrated equipment

Instruments and tools travel with current calibration certificates, listed in the job record.

Single point of contact

One supervisor coordinates nitrogen purging with bolting and the other joint services on the Abqaiq job.

FAQ

Nitrogen Purging in Abqaiq: common questions

Do you leak test with nitrogen after bolting in Abqaiq?

Yes. Joints tightened by our crews can be nitrogen leak tested before process gas is reintroduced.

How do you know a purge is complete?

Readings are taken with calibrated analysers at agreed points. The purge is complete when consecutive readings meet the target, and the results are witnessed and recorded.

What oxygen level do you purge to in Abqaiq?

The target is set by your site procedures and the next activity. Inerting before hydrocarbons go in commonly aims for a low single-digit oxygen percentage or less, agreed before we start.

Request a quote

Request nitrogen purging in Abqaiq

Send the system details and access dates for Abqaiq. We will reply with a purge plan.

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