Efficiency and Safety in Infrastructure Construction with Submersible Pump

DYNASET HSP Hydraulic Submersible Pumps are ideal for pumping large amounts of water, dewatering excavations, and various liquid handling tasks on construction sites. The Hydraulic Submersible Pump from Dynaset has been a valuable asset at a construction site in Tampere for over a month.

Vuores, located in Tampere, is one of the city’s newest and rapidly growing neighbourhoods. Vuores welcomed its first residents in the early 2010s, and today, the population in the area has exceeded 7,000. The defining features of this neighbourhood are its nature and unique residential areas integrated into a modern streetscape. Balancing these two aspects requires environmentally conscious practices right from the early stages of construction. Construction and ground disturbance near Lake Lahdesjärvi demand special attention to preserving the local environment and well-being.

We had the opportunity to visit the Västinginmäki construction site, where infrastructure development for a residential area is currently underway. In the near future, the area will be filled with new houses, but for now, the focus is on laying the foundations for construction. On a sunny Friday morning, we spoke with Kari Kivimäki, the excavator operator at the site, who shared insights about the site and the role of the HSP Hydraulic Submersible Pump in this environment.

— We are working on the construction of Tampere’s infrastructure. This is a mass exchange site where we dig into moraine layers and replace them with crushed rock. We use this crushed rock for the pre-construction of plots and streets, Kivimäki explained.

— The need for pumping became evident because the water level here is quite unique. There’s an abundant amount of water in Lahdesjärvi Lake, and we are about two meters below the lake’s surface. We need to limit our excavation area according to the pump’s capacity to avoid issues with clayey soils, he added.

Construction worker standing in the work site.
Kari Kivimäki is a seasoned construction worker who has worked on various construction sites for decades.

The decision to use HSP Hydraulic Submersible Pump on the site was made thanks to Kivimäki. He recalled Reijo Karppinen, the founder of Dynaset, from the mid-80s. Kivimäki discovered the product from Dynaset’s website.

— I had some knowledge of what Reijo was doing back in the mid-80s when he started working on stump grinding for excavators. I tested one of those in Keimola at the time, and it was developed during Reijo’s era, Kivimäki reminisced.

— While browsing Dynaset’s website, I found a submersible pump that was released on the market in January 2023. I presented it to the site supervisor the following Monday, saying that here is a submersible pump with more than enough capacity and all the required specifications, including safety and efficiency. It was well received, and there was no doubt about using that pump. We decided that Hämeen Kaivin would purchase the device, and it would be integrated with one of the excavator units.

Dynaset HSP 3000 Guarantees a Reliable and Safe User Experience

Dynaset offers four different models of HSP Hydraulic Submersible Pumps: HSP 900, HSP 3000, HSP 6500, and HSP 8500. Each model is designed to withstand materials like mud, rocks, and abrasive substances without clogging. Kivimäki commended the pump’s lightweight construction, with the lightest model (HSP 900) weighing only 5.2 kilograms.

— The HSP 3000 is compact in size, weighing only 13 kilograms. It is easy to handle, and the performance is top-notch, providing a flow rate of 3000 liters per minute. It’s used to remove a significant amount of material from the excavation to reach the bottom. Safety is a key consideration, ensuring that work can be done in a way that prevents workers from going home with foot injuries, such as rocks falling on their feet or running in the pit after the pump. The HSP is supported by the machine it’s attached to and fed hydraulically, eliminating the need to go in the pit by yourself. It is operated safely, which is the primary goal, especially in today’s work environment, Kivimäki explains.

HSP 3000 Hydraulic Submersible Pump
Efficient power-to-size -ratio provided by Dynaset. In this picture is the HSP 3000.

You can find more for more information about the features of our Hydraulic Submersible Pumps from our website.

Reliable and Inconspicuous Co-worker

— There’s nothing to complain about the hydraulic submersible pump. It handles these water masses we’ve had to deal with on the construction site just fine. There’s no need for maintenance with the submersible pump, and its simple design ensures its reliability in the future as well. If problems arise, I’m sure they’ll be quickly resolved in Ylöjärvi, Kivimäki smiles.

If water volumes were to increase on the construction site at some point, Kivimäki would still turn to Dynaset’s HSP product family.

— I’ve been thinking that if there are issues with water quantities – especially during the winter, given our depths – if the need arises, we might have to switch to a larger model. Of course, that’s something that needs to be presented to the management first.

Two people are standing and talking to each other on the construction site.
Kivimäki shared his thoughts on the co-operation with Dynaset: “Hopefully this co-operation will grow wings to take us even further and make this a long-term partnership”.

During our conversation, HSP 3000 has continued its work silently. The Dynaset team is packing up and heading back to the office, but the HSP continues to pump for several hours before a weekend-long break.

— It is fully utilized on the construction site, operating in two shifts, Kivimäki says.

He ends our conversation with a famous Finnish quote:

 — Everything has been progressing smoothly, “just like a train on its tracks”.

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