placeholder
25 October 2018

Large-scale maintenance at the Kok pumping station

Over the past few weeks, the Rivierenland District Water Board has been working hard on large-scale maintenance to the Kok pumping station in Kinderdijk. “We haven’t found any surprises.”

Built in 1995, the tell-tale pointed shape and glass roof that mark the basin pumping station make it a striking appearance among the buildings of Kinderdijk UNESCO World Heritage. Flanked by its Kinderdijk confrere, the J.U. Smit pumping station, the Kok installation plays a crucial part in the Alblasserwaard area’s water management. “This is where all the basins are discharged”, asserts Albert-Jan van As, maintenance team leader at Riverierenland Water Board. “Nearly all of the water from the entire Alblasserwaard region is expelled at this point.”

Sunlight

During maintenance, its three giant Archimedean screws, each one measuring 4.5 metres across, get a well-deserved glimpse of sunlight after having been under cover for years. The noise-dampening concrete slabs that hide the screws from view when operational had to be removed. The Water Board experts just finished their careful inspection of a range of technical features, including the concrete encasing, the vices themselves, the bearings, and the milling channel. “We haven’t found any surprises so far”, Van As reports. According to Van As, the most recent round of full-scale maintenance performed on the Kok pumping station occurred almost ten years ago. Accordingly, the District Water Board decided it was high time for a thorough inspection in the run-up to the extensive new construction activities throughout the World Heritage site, and in light of the planned expansion of the capacity of the Elshout sluices – which pump out the water into the River Lek – set for the near future.

During maintenance, its three giant Archimedean screws, each one measuring 4.5 metres across, get a well-deserved glimpse of sunlight.

During maintenance, its three giant Archimedean screws, each one measuring 4.5 metres across, get a well-deserved glimpse of sunlight.

The Kok pumping station was commissioned by the Alblasserwaard and Vijfheerenlanden District Water Control Board in 1995, replacing the old electric Wisboom pumping station that is presently used as the Kinderdijk visitors centre.

2,4 miljoen

Operating at full capacity, the Kok pumping station is able to pump out a staggering 1.4 million litres of water per minute out of the Overwaard’s Lower Basin. The J.U. Smit pumping station, which mills the Lower Basin of the Nederwaard area, is capable of chucking out well over a million litres of water every sixty seconds. This means that in times of need, these twin powerhouses combined have the power to jettison a mind-boggling 2.4 million litres of water out of the Alblasserwaard every single minute.

The author

New construction is on schedule

New construction is on schedule

Read more
Annual maintenance in the quiet month of January

Annual maintenance in the quiet month of January

Read more
New Dutch Water Line: soon to be World Heritage?

New Dutch Water Line: soon to be World Heritage?

Read more
Essential winter maintenance throughout January

Essential winter maintenance throughout January

Read more
Record Height

Record Height

Read more
The Kinderdijk Windmill Adventures of Fien and Teun

The Kinderdijk Windmill Adventures of Fien and Teun

Read more
Building the future

Building the future

Read more
Expensive maintenance for the Kinderdijk World Heritage mills

Expensive maintenance for the Kinderdijk World Heritage mills

Read more
The Driehoeksveer ferry gets you to Kinderdijk; even in the weekend

The Driehoeksveer ferry gets you to Kinderdijk; even in the weekend

Read more
‘Everything about the mills is so much fun – I wouldn’t mind living here.’

‘Everything about the mills is so much fun – I wouldn’t mind living here.’

Read more