Sustainability

Life extension is the most sustainable solution

SIGRA's business model is inherently sustainable. When we rehabilitate a pipe instead of replacing it, we save steel, reduce transport, eliminate waste and cut CO₂ emissions. Not as an add-on — but as the core of what we do.

90%

Reduction in steel consumption per rehabilitated pipe section

75%

POB reduction with Oxiblast — fewer helicopter trips

30–50 years

Lifespan of GRE and GRP vs. steel 15–20 years

30–40%

Weight reduction of GRP vs. aluminium — longer electric range

Closed

Material flow for cathode plates — produced and recycled in Odda

Our approach

Sustainability isn't an add-on — it's the business model

SIGRA doesn't build sustainability as a separate program. We are a rehabilitation company — and rehabilitation is by definition more sustainable than replacement. Every pipe we renew instead of replacing means less steel produced, fewer helicopter trips, a shorter construction period and a lower total CO₂ footprint.

The same applies to GRP and GRE: materials that last 30–50 years in corrosive environments where steel lasts 15–20 years. And for electric vessels: GRP that is 30–40% lighter than aluminium delivers a direct gain in battery range and climate footprint per passenger-kilometre.

Core service

SIGRA's core service — extending the lifespan of existing infrastructure — is in itself a sustainability measure.

Key figures

Documented sustainability gains

Up to 90% reduction in steel consumption

per rehabilitated pipe section compared with full pipe replacement

Up to 75% POB reduction

with Oxiblast — fewer helicopter trips and a lower carbon footprint per assignment

GRE and GRP last 30–50 years

versus steel's 15–20 years in corrosive environments — lower lifecycle cost and fewer replacements

GRP 30–40% lighter than aluminium

a direct gain in electric range for fully electric vessels

Closed material flow

for cathode plates — produced, used and recycled in Odda with no international transport

Rehabilitation with minimal excavation

third-party approved products for drinking water and wastewater, with minimal road digging and traffic disruption

Sustainability arguments

Six concrete sustainability gains

Up to 90%

Reduced steel consumption through rehabilitation

Internal rehabilitation reuses existing pipe infrastructure. Compared with full pipe replacement, we save steel, reduce hot work, eliminate waste and deliver a shorter construction period.

Pipe rehabilitationPipeliner

Closed loop

Circular economy — cathode plates in Odda

OP Industriservice and Boliden Odda operate a closed material flow: cathode plates are produced, used and recycled in Odda. No international transport, full traceability and a low CO₂ footprint per unit.

OP IndustriserviceBoliden Odda

30–50 years

Composite outlasts steel

GRE and GRP have a documented lifespan of 30–50 years in corrosive environments — versus steel's 15–20 years. Fewer replacements mean lower total resource consumption and climate footprint over the installation's lifetime.

Odda PlastHerde Kompositt

30–40%

GRP vessels and zero emissions

GRP is 30–40% lighter than aluminium — a direct gain in battery range for fully electric vessels. Brim Explorer and Hyke are concrete examples of a lighter hull giving longer range and supporting the UNESCO zero-emission requirement in the Geirangerfjord.

Herde KomposittBrim ExplorerHyke

75%

Reduced POB — fewer helicopter trips

The Oxiblast robot reduces personnel on board by up to 75% per assignment. Fewer helicopter trips mean lower fuel consumption and CO₂ emissions — in addition to direct HSE gains for the crew.

PipelinerOxiblast

Minimal excavation

Low-dig water and wastewater rehabilitation

Trenchless pipe rehabilitation with minimal excavation causes little disruption to green spaces, roads and infrastructure. Third-party approved products for drinking water and wastewater. Shorter construction period and lower total climate footprint.

PipelinerMunicipal water & wastewater

Rehabilitation vs. replacement

What does choosing rehabilitation actually mean?

The figures below are based on documented projects from Pipeliner 2018–2025. Rehabilitation isn't just cheaper — it's more sustainable across all three key axes: resource use, time and climate footprint. A rehabilitated pipe reuses the existing steel infrastructure. The new liner material (PE, GRE or epoxy) requires a fraction of the energy and raw materials that producing a new steel pipe requires.

	Full pipe replacement	SIGRA rehabilitation
Cost	BaselineFull replacement cost	30–60%Of full replacement cost
Execution time	BaselineFull replacement time	20–40%Of full replacement time
Steel consumption	100%New steel produced	Up to 10%Existing pipe reused
Lifespan	15–20 yearsSteel in corrosive environment	15–25 years +With GRE/PE liner

Circular supply chain

Closed material flow in Odda — OP Industriservice and Boliden

OP Industriservice supplies cathode plates to Boliden Odda's metallurgical process. After use, the plates are recycled locally in Odda — a closed circular material flow with no international dependency. The result is a shorter transport chain, lower logistics CO₂, full traceability per component and a more robust supply chain than imported alternatives.

Odda

Produced, used and recycled in the same place

International transport in the core supply chain

Full

Traceability per component throughout the lifecycle

20+

Years of an established supplier relationship in Odda

Transparency Act

Due diligence assessments in the supply chain

The SIGRA group complies with the Transparency Act and carries out due diligence assessments for human rights and decent working conditions in the supply chain. A statement is published annually.

Read SIGRA's Transparency Act statement →

Contact

Want to know more about sustainability at SIGRA?

Get in touch for documentation, the Transparency Act statement, or concrete sustainability figures from reference projects.

CEO — SIGRA Group

Odd Einar Magnussen

odd.einar.magnussen@sigra.no