STATS In-Line Weld Test Tool

Localised weld testing with less system disruption

STATS In-Line Weld Test Tools provide a fast and efficient method of verifying the integrity of new welds, joints and welded pipe components.

The tool creates a localised test boundary around the weld, substantially reducing the volume that must be pressurised. This avoids the need to flood, pressurise and subsequently de-water large sections of the piping system.

By limiting testing to the new weld or welded component, operators can reduce downtime, simplify the testing procedure and minimise the demands placed on the wider system.

Key benefits

• Limits pressure testing to the new weld or welded component
• Reduces pressure-test volume and system downtime
• Avoids flooding and de-watering large sections of gas systems
• Removes the need for full-system pressurisation
• Simple installation and straightforward operation
• Installed and activated in a matter of minutes
• Suitable for most liquid and gas test media
• Large-section elastomer seals provide reliable sealing in pitted pipework
• Generous radial clearance accommodates weld beads, pipe ovality and other common internal irregularities
• Suitable for horizontal, vertical and inclined pipework
• Available for rental with the required ancillary equipment

Two functions from one tool

In addition to localised hydrostatic weld testing, the In-Line Weld Test Tool can be deployed before hot-work activities to establish a verified atmospheric barrier adjacent to the hot-work location.

This application is suitable only where containment is maintained at atmospheric pressure.

Once correctly positioned and activated, the tool creates a verified vapour barrier between the hot-work location and the remaining pipework. Following completion of the welding activity, the tool can be repositioned and used to test the integrity of the new weld.

This dual-purpose capability allows one tool to support both preparation for hot work and subsequent weld testing, helping reduce the amount of equipment required on site.

Reliable sealing in demanding pipework

High-performance, large-section elastomer seals provide excellent radial expansion and create a reliable, leak-tight test boundary, including in pitted pipework.

The tools are designed with generous radial clearance to pass common internal obstructions such as weld beads and accommodate pipe ovality. Pressure-assisted sealing supports reliable isolation throughout the test.

Their robust construction is designed for repeated operation in demanding industrial environments.

Applications

In-Line Weld Test Tools can be used for:

• Localised hydrostatic testing of new butt welds
• Testing welded joints and pipe fittings
• Testing welds completed during maintenance or modification work
• Providing a verified atmospheric or vapour barrier before hot work
• Projects where flooding and testing the complete piping system would be impractical
• Mature systems where full-system pressurisation could introduce additional risk

Technical specifications

• Standard size range: Common pipe sizes from ¾ inch to 36 inches
• Larger sizes: Up to 72 inches available on request
• Mechanical tools: Available from ¾ inch to 2 inches
• Hydraulically activated tools: Available from 3 inches to 36 inches
• Maximum pressure: Up to 690 bar / 10,000 psi, dependent on the selected tool and application
• Sealing: Pressure-assisted, high-performance elastomer seals
• Test media: Suitable for most liquid and gas test media
• Installation orientation: Horizontal, vertical or inclined pipework

Actual pressure capability varies according to the selected tool, pipe diameter, schedule and application. The maximum permitted test pressure must be confirmed for each project.

Available from Patriot International

STATS In-Line Weld Test Tools are available through Patriot International for maintenance, modification and weld-testing applications.

Contact our team with your pipe dimensions, schedule, weld configuration, required test pressure and intended application. We will help identify the appropriate tool and ancillary equipment for your project.

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