The pneumatic test is an alternative procedure that replaces the hydrostatic test for the performance on pipelines that cannot or are not allowed to be filled with water. A pneumatic test implies that the fluid used is a gas, usually air or an inert gas such as nitrogen.

A pneumatic test is more dangerous than a hydrostatic test due to the higher accumulative energy content of a compressed gas, and this type of test is limited to lower pressures or smaller systems.

For testing large high-pressure systems, a low-pressure pneumatic test can be used as a leak test to detect leaks after the entire system has been assembled.

We at ITP Service use a Booster (up to 350 bar) and on-site nitrogen generator by membranes.

Significant projects

NPS 48 INCH X 250 KM TRANSMISSION GAS PIPELINE (INTERCONNECTOR) “BORDER OF BULGARIA”

Client: IDC CONSORTIUM

Country: Serbia

Year: 2020

Scope: 250 km x Ø 48” / 402 km x Ø 48”

Completed works: Hydrostatic pressure testing, extra-dry air drying, Caliper Pig evaluating and nitrogen services.

Pressure testing Extra-dry air drying Pipeline inertisation Caliper Pig

NPS 48 INCH X 41,7 KM BALKAN STREAM BULGARIA SECTION A4 / NPS 48 INCH X 56,8 KM BALKAN STREAM BULGARIA SECTION A5

Client: BONATTI SPA

Country: Bulgaria

Year: 2020

Scope: 98.5 km x NPS Ø 48”

Completed works: Hydrostatic pressure testing, extra-dry air drying and pneumatic testing of stations and valves.

Pressure testing Extra-dry air drying Pneumatic test

TRANS ADRIATIC PIPELINE PROJECT – LOT 2 & 3 48”

Client: BONATTI

Country: Greece

Year: 2018 - 2019

Scope: 366 km x Ø 48”

Completed works: Hydrostatic pressure testing, extra-dry air drying, Caliper Pig evaluating and nitrogen services.

Pressure testing Extra-dry air drying Pipeline inertisation Caliper Pig

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