A company with a long tradition.

About us

PRINER is the new name of Mills|Si, a leading Brazilian company in the industrial services and maintenance sector, focused on results-based management, commitment to safety and innovative technological solutions.
Our Solutions

Priner has arrived in the US

We offer a broad portfolio of Integrity and Advanced Engineering Solutions for Industrial Equipment in the United States, ensuring the safety and reliability of your assets.

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Structural Repair and Reinforcement

Priner operates in the infrastructure sector with a focus on solving its clients’ structural issues while minimizing the impact on their operations.

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Access

The execution of all work starts and ends with Access, and we are specialists in this area.

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Geotechnics

Priner has extensive experience in Geotechnics, consistently combining modern solutions, high technical capability, and solid expertise in executing a wide range of services. One of the main technologies used by our company is the execution of injected piles, also known as pressurized anchoring.

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Habitat

The pressurized habitat is the ideal solution in terms of cost and operation at sites with strict safety requirements, such as offshore oil production rigs, refineries and petrochemical plants and terminals.

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Integrity Engineering and Inspection

The Integrity Engineering and Inspection team at Grupo Priner is composed of qualified professionals and equipped with cutting-edge technology to deliver the best solutions in conventional and advanced inspection techniques for equipment assessment.

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Thermal insulation

Efficient solutions for conventional and portable thermal insulation systems, firewalls and acoustic systems, offering maximum productivity and quality.

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Industrial paintwork

A qualified technical team develops tailor-made solutions in all market segments, taking into account the reduction of environmental risks and increase the projected life of the plants.

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Priner has arrived in the US

We offer a broad portfolio of Integrity and Advanced Engineering Solutions for Industrial Equipment in the United States, ensuring the safety and reliability of your assets.

Find out

Structural Repair and Reinforcement

Priner operates in the infrastructure sector with a focus on solving its clients’ structural issues while minimizing the impact on their operations.

Find out

Access

The execution of all work starts and ends with Access, and we are specialists in this area.

Find out

Geotechnics

Priner has extensive experience in Geotechnics, consistently combining modern solutions, high technical capability, and solid expertise in executing a wide range of services. One of the main technologies used by our company is the execution of injected piles, also known as pressurized anchoring.

Find out
Locations

We operate throughout Brazil.

Branches

Highlights

Suspended Platform: The advantages of use of Web PrinerDeck in Offshore Maintenance

March 2017 | Campos Basin | RJ

29kg/m² of aluminum and steel material

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All cases

Highlights

Ideal for safe work in explosion risk areas

Offshore oil production rigs, refineries, industrial plants and petrochemical terminals.

Flame retardant PVC

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All cases

Highlights

Isolamento Térmico Removível – Substituição de jaqueta térmica em turbina a gás de usina termelétrica

Jan | 2018

96 kg/m³de manta fibra cerâmica e tecido de fibra de vidro

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All cases

Highlights

Aluminum Fitting Scaffolding System – Access Technology

Forno de Pirólise | Bahia | 2017

50%reduction in assembly time and team risk exposure

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All cases

Highlights

SafeCool and WCM-Welding Control Module. The new Habitat equipment that ensures enhanced productivity

May | 2017

NR15 without restrictions

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All cases

Highlights

Suspended Platform: The advantages of use of Web PrinerDeck in Offshore Maintenance

March 2017 | Campos Basin | RJ

29kg/m² of aluminum and steel material

Read more

All cases

Highlights

Ideal for safe work in explosion risk areas

Offshore oil production rigs, refineries, industrial plants and petrochemical terminals.

Flame retardant PVC

Read more

All cases

Highlights

Isolamento Térmico Removível – Substituição de jaqueta térmica em turbina a gás de usina termelétrica

Jan | 2018

96 kg/m³de manta fibra cerâmica e tecido de fibra de vidro

Read more

All cases

Highlights

Aluminum Fitting Scaffolding System – Access Technology

Forno de Pirólise | Bahia | 2017

50%reduction in assembly time and team risk exposure

Read more

All cases

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