Admin, skribent på NordicSub ApS

7. October 2025 by Admin

NordicSub – Specialists in harbor renovation and construction of maritime facilities

At NordicSub, we have many years of experience in harbor renovation, renovation, and new construction of quay facilities. We are known for our underwater work, but our competencies extend far beyond that. We offer complete solutions for inspection, maintenance, and contracting work – in Denmark, Greenland, and the rest of the Nordic region.

Harbor renovation requires specialized knowledge

A port facility is exposed to enormous stresses: waves, frost, ice, heavy loads, and daily traffic from ships. Without ongoing maintenance and inspection, even the strongest structures can be weakened. At NordicSub, we combine advanced underwater technology with practical experience, so we can identify and correct problems in time.

We offer, among other things:

🔹 ROV inspections and diving inspections

🔹 Thickness measurement of sheet piles

🔹 Diving work with a focus on repair and new construction

🔹 Installation of anodes

🔹 UHP (Ultra High Pressure) cleaning of structures

🔹 Establishment of sheet pile walls and new quay facilities

🔹 Total renovation of existing ports

Construction projects in Greenland and the Nordic region

We are proud of our participation in projects such as the renovation of Atlantkajen in Maniitsoq – Greenland, where we were part of a larger team that carried out the demolition of the old quay and the establishment of a new, modern sheet pile quay.

Such projects show how we combine specialized underwater work with broad contracting tasks – and deliver results that last for many years to come.

NordicSub – your partner in maritime constructions

Whether it concerns the renovation of an existing port or the construction of a new quay, NordicSub is the right partner. We ensure that projects are carried out safely, efficiently and with the highest quality – even under demanding conditions in the Arctic.

7. October 20257. October 2025 by Admin

Thickness measurement in Nuuk: Professional work in Greenland’s capital

In Nuuk, the capital of Greenland, our NordicSub team recently completed an extensive project focusing on thickness measurement and inspection of steel structures. The work was carried out under demanding conditions, but the result ensures both long-term durability and high safety for the structures supporting the city’s infrastructure.

Measurement of load-bearing steel structures

A central part of the project was the measurement of load-bearing steel structures. With advanced measuring equipment, we were able to record precise data on the condition of the materials. This allows for the timely detection of any wear, enabling maintenance planning before problems escalate.

Measurements of sheet pile thickness

Measurements of sheet pile thickness were also conducted. Sheet piles play a crucial role in structures that must withstand both water pressure and harsh climatic conditions. By monitoring the thickness, we ensure that the sheet piles continue to meet the requirements and provide the necessary protection.

Inspection of anodes and corrosion protection

Corrosion is a natural challenge for steel in an environment like Greenland. Therefore, we conducted thorough inspections of anodes and remaining corrosion protection. This way, we can confirm that the structures are secured against degradation – and suggest measures if additional protection is needed.

Reporting and action plan

After the project was completed, a detailed report was prepared. Here, we compiled the results and presented a clear action plan for future maintenance. This provides the client with a solid overview and assurance that the structures can last for many years to come.

The project in Nuuk demonstrates the importance of regular thickness measurements, inspections, and documentation. By combining technical precision with professional reporting, we create confidence for our clients – no matter where in the world the work is performed.

7. October 202525. September 2025 by Admin

Effective Cleaning of Fire Sprinkler Systems at Bispebjerg Hospital

Fire sprinkler systems are a critical part of safety in hospitals, where a reliable water supply can save lives. At Bispebjerg Hospital, NordicSub ApS has conducted professional cleaning of sprinkler systems and tank cleaning to ensure optimal operation and compliance with fire safety standards.

Why cleaning sprinkler systems is necessary

1. Prevention of deposits and biofilm

Sediments and microorganisms can accumulate at the bottom of the tank and restrict water flow, which can affect the sprinkler system’s function during an emergency. Regular fire sprinkler system cleaning prevents this.

2. Preservation of water quality

The water in sprinkler systems must be free of impurities to ensure that nozzles and pipes function correctly. Professional cleaning of sprinkler systems ensures that the system is always ready for use.

3. Compliance with regulations and standards

Tank cleaning in hospitals is often required according to building and fire safety regulations. Lack of maintenance can lead to legal and insurance consequences.

4. Protection of infrastructure

Deposits and corrosion can shorten the lifespan of tanks and lead to costly repairs if not removed regularly. UHP high-pressure cleaning and underwater cleaning of tanks by NordicSub effectively protect the infrastructure.

NordicSub’s approach at Bispebjerg Hospital

Underwater cleaning of tanks without draining them, minimizing operational disruptions.
Diver inspections to detect sediments and early signs of corrosion.
High-pressure (UHP) cleaning for efficient removal of deposits and biofilm.
All work is tailored to sprinkler system maintenance at hospitals.

Benefits for Bispebjerg Hospital

Reliable operation of the sprinkler system in emergencies.
Reduced risk of malfunctions and costly repairs.
Extended lifespan of tanks and pipes.
Ensured compliance with fire safety standards and regulations.
Professional tank cleaning at Bispebjerg Hospital by NordicSub provides peace of mind.

Regular fire sprinkler system cleaning and tank cleaning is an investment in the safety of both patients and staff. The project at Bispebjerg Hospital demonstrates how professional services from NordicSub ensure that the sprinkler system operates optimally when it really matters.

9. July 20256. May 2025 by Admin

Nordic Sub Deploys – with Our Own Mobile Diving Unit

At Nordic Sub, we’ve strengthened our capacity with a fully equipped, mobile diving container – tailored for professional underwater operations in demanding environments. This enables us to operate even more flexibly and efficiently – no matter where in the Nordics or Arctic the task takes us.

Currently, our container is in use in Greenland, where we are involved in a major reconstruction of a 130-meter quay. Our setup allows for the rapid, safe, and efficient establishment of a complete professional diving base on site.

What does this mean for our clients?

✅ Mobility and fast deployment: We can respond to even the most remote locations with all necessary diving equipment contained in one unit.

✅ Our own equipment, no waiting time: We are not dependent on external suppliers – we bring everything ourselves.

✅ Professional standards: The container includes advanced equipment for diving, communication, heating, and safety – all compliant with current professional commercial diving standards.

✅ Efficiency on site: We minimize downtime and maximize productivity by having everything in one place.

✅ Expertise in demanding environments: Our team is experienced in working under extreme weather conditions and complex logistical frameworks.

With this mobile solution, we are equipped to handle tasks in:

Port construction

Marine construction

Inspection and maintenance

Underwater operations in demanding areas

At Nordic Sub, we combine experience, flexibility, and professional equipment – and we are ready for the next challenge.

Follow our projects and see how we work in some of the Nordics’ most demanding environments.

10. July 202530. April 2025 by Admin

Efficient UHP cleaning of the swimming pool in Munkebo Swimming Pool

In connection with the ongoing renovation of Munkebo Swimming Pool, NordicSub has carried out a thorough cleaning of the swimming pool using our advanced UHP equipment. This method ensures a thorough removal of deposits and contaminants without the use of chemicals, which is ideal for areas where hygiene and surface quality are crucial.

What is UHP cleaning?

UHP stands for Ultra High Pressure and refers to cleaning with water under extremely high pressure. This technique is particularly effective for removing stubborn deposits, limescale and other contaminants from surfaces such as concrete and tiles without damaging the material.

Benefits of UHP cleaning in swimming pools

– Environmentally friendly method: No use of chemicals means there is no risk of chemical contamination.
– Effective coating removal: Effectively removes paint, coatings and deposits.
– Extends lifespan: Regular UHP cleaning can extend the lifespan of surfaces by preventing the build-up of harmful deposits.

NordicSub’s expertise

Based in Munkebo, Denmark, NordicSub has extensive experience with underwater work and specialized cleaning. Our team of professional divers and technicians ensure that all tasks are carried out to the highest standards and precision.

Do you need professional cleaning and renovation of swimming pools or other underwater structures? Contact NordicSub for a no-obligation conversation about how we can help you.

10. July 202522. April 2025 by Admin

What should not be in a sprinkler reservoir? – The importance of regular underwater inspections

AtNordicSub, we have conducted numerous underwater inspections of sprinkler reservoirs in Denmark and Sweden. During these inspections, we have often observed conditions that can compromise the functionality and safety of the tank. It’s crucial to understand what should not occur in a sprinkler tank and why regular inspections are essential.

Unwanted conditions in sprinkler system reservoirs

A sprinkler system reservoir must always be in optimal condition to ensure effective fire extinguishing. The following conditions are unacceptable:

– Corrosion: Rust on the internal surfaces of the tank can lead to leaks and structural weaknesses.

– Deposits and sediment: Dirt build-up can block outlets andreducewater quality.

– Vegetation: Roots and plants inside the tank can damage the structure and contaminate the water.

– Biological growth: Algae and bacteria can affect water quality and cause clogging.

– Foreign objects: Objects such as debris or animals can contaminate the water and hinder equipment function.

Why are regular inspections important?

Regular underwater inspections ensure that the tank is functioning properly and meets safety standards. Benefits include:

– Early detection of issues: Identifyingpotential faults before they develop into serious damage.

– Regulatory compliance: Many countries require periodic inspections to ensure fire safety.

– Safety of personnel and property: A well-functioning tank is essential in emergency situations.

– Cost savings: Prevent major repairs through early intervention.

Consequences of lack of maintenance

Failure to perform regular inspections can lead to:

– System failure during a fire: A faulty tank can prevent effective fire extinguishing.

– Legal consequences: Failure to comply with safety standards can result in fines or liability for damages.

– Increased maintenance costs: undetected issues can escalate and require expensive repairs.

NordicSub’sapproach to inspection

We useadvancedROV (Remotely OperatedVehicle) technology to perform detailed underwater inspections without emptying the tank. This ensures minimal disturbance andaccurateassessment of tank condition.

Our inspectionprocess includes:

– Visual assessment: Identification of corrosion, deposits and structural damage.

– Documentation: High-resolution images and videos for reporting.

– Reporting: A comprehensive report with recommendations for maintenance or repair.

Make sure your sprinkler reservoir is in optimal condition. ContactNordicSubfor a thorough underwater inspection.

10. July 202522. April 2025 by Admin

We also offer sprinkler reservoir cleaning, maintenance and refurbishment services

AtNordicSub, we don’t stop at the inspection – we also offer complete solutions when problems are detected in a sprinkler reservoir. We have experience with everything from underwater cleaning and rust removal to installing sacrificial anodes and renovating tanks, both with and without draining.

We solve problems – not just discover them

When we detect sediment, corrosion or biological growth during inspection, we provide the followingspecializedservices:

Underwater cleaning with divers and suction equipment

Using underwater vacuuming and diving teams, we can effectively remove sludge, leaves, dirt and other deposits from the bottom of the tank – without emptying it. It’s a gentle and quick solution that ensures continued operation.

Rust removal and anode installation

Rust under water can lead to serious damage. Our divers perform manual rust removal and install zinc anodes (sacrificial anodes) that protect the tank structure from future corrosion. This is an effective, preventive solution that extends the life of the tank.

Empty tank cleaning and refurbishment

When it’s necessary to empty the tank completely, we offer full cleaning and surface treatment. We can also help with epoxy coating, welding or sealing cracks in the tank walls and bottom.

Complete renovation and maintenance

Whatever the condition of the tank, we can plan and carry out a complete refurbishment to bring it back to full compliance. This includes both underwater work and work inside empty tanks.

Why chooseNordicSub?

✅ We have experience with fire water systems throughout Denmark and abroad

✅ We offer complete solutions – from inspection to renovation

✅ We usestate-of-the-artROV equipment andcertifieddivers

✅ We work quickly, efficiently and safely – without downtime

Read more about ourservicesand subsea work at www.nordicsub.dk

10. July 202511. April 2025 by Admin

At NordicSub, we specialize in underwater inspections and carry out assignments both in Denmark and abroad. We recently completed a successful underwater ROV inspection of a fire water tank in Sweden.

The job was carried out with our advanced underwater ROV (Remotely Operated Vehicle), which made it possible to inspect the entire tank interior – without emptying and without diver operation.

We also offer underwater work abroad.

This assignment in Sweden is a good example of how we respond quickly to international projects where our specialist knowledge and technology can make a difference.

The inspection was carried out in an active fire protection system and our underwater ROV provided sharp images and video footage that gave a clear overview of the tank’s condition.

Why is underwater reservoir inspection important?

✅ Corrosion, cracks and coatings detected in time

✅ Full operational control without interrupting the system

✅ Statutory inspections and insurance company requirements are met

✅ Documentation for authorities, service company and owner

Underwater ROV inspection can identify potential problems before they become real damage – and it’s all done safely, quickly and efficiently.

Benefits of underwater ROV for tank inspections

🔹 High image and video quality

🔹 No need to empty the tank

🔹 Safe method without a diver

🔹 Time-saving and cost-effective

Get professional inspection in Denmark and internationally.

We have experience with underwater work in Sweden, Norway, Germany and throughout Denmark. Whether it’s reservoirs for sprinkler systems, rainwater basins or industrial tanks, we’re ready to help.