VIDEO: Demolition crew topples defunct surge tower at B.C. hydroelectric project

Towers were in operation from 1947 to 2018, and protected 1.8-km long penstocks

And then there were two…

The contractor for BC Hydro’s John Hart Generating Station project in Campbell River successfully felled one of three historic surge towers Friday morning.

“At about 10:20 am, we detonated precise explosives attached to some of the base girders of the tower so it directionally fell as planned, similar to a large tree, up the penstock corridor,” said BC Hydro spokesperson Stephen Watson.

The demolition was part of the approximately $1 billion John Hart Generating Station Replacement Project which moved generating facilities underground to make them seismically safer. Currently, the old above-ground structures are being removed.

A 450-metre safety closure radius was put in place around the surge towers, so the two access roads into the site and the surrounding public trails were closed off for the controlled blast event. The contractor InPower BC, with FMI/ASL-JV and subcontractor Pacific Blasting and Demolition leading the actual surge tower removal, obtained a blast permit from the City of Campbell River. People near the site may have heard the blast and wondered what the sound was from.

For the felling process, some of the eight supporting legs of the tower were cut using linear shape charges, with kicker charges used to ensure full metal separation and displacement.

“We will now remove the felled surge tower, with the steel to be recycled,” Watson said. “The second tower may be felled sometime next week.”

The third (south) tower, while not part of the new hydroelectric facilities, is in good condition and will stay in place given it has communications equipment and is a visual aid to the local airport. There is also the heritage value in keeping one tower in place, Watson said.

At 90 metres or 295 feet tall, for a period of time the surge towers were the highest structures on Vancouver Island. The iconic white towers are visible from certain areas of Campbell River, including from boats on the ocean.

They were in operation from 1947 to 2018, and protected the 1.8-km long penstocks that led from the dam to the generating station from short duration water pressure changes that occur when the flow velocity is increased or decreased. They do this by allowing the water to go up, or conversely come down. The surge tanks were half-filled with water and at the same elevation as the upstream John Hart Reservoir.

The old John Hart facility was officially shut down last fall and replaced with a new and improved underground hydroelectric facility. The old facility is being removed.

RELATED: Water to be diverted from generating station tunnels to Elk Falls Canyon

RELATED: Campbell River’s Canyon View Trail loop to be opened up by end of summer


@AlstrT
editor@campbellrivermirror.com

Like us on Facebook and follow us on Twitter

Just Posted

Controversial SD69 discussions continue regarding field trips requiring air travel

Some Qualicum district students believe motion takes away too much from experience at school

Pole-climbing thieves pilfering wire in Parksville Qualicum Beach area

Repairs are costly and thefts jeopardize public safety

Library month celebrates Indigenous people, culture in Parksville

Vancouver Island Regional Library showcasing culture of many Nations during October

Green Party leader Elizabeth May talks eliminating fish farming in open ocean pens

May stops in Qualicum Beach as part of Island campaign

Qualicum Beach council discusses helping out Orca Place residents

Town considers offer of temporary jobs in the future

Fashion Fridays: 5 things to remove from your closet

Kim XO, helps to keep you looking good on Fashion Fridays on the Black Press Media Network

B.C. public safety minister says cannabis edibles not in stores til January

Mike Farnworth says he wants regional issues considered when it comes to licensing

First all-female spacewalk team makes history

NASA astronauts Christina Koch and Jessica Meir did work on International Space Station’s power grid

Greta Thunberg calls for climate action in Alberta, but doesn’t talk oilsands

Swedish teen was met with some oil and gas industry supporters who came in a truck convoy

Scheer denies spreading ‘misinformation’ in predicting unannounced Liberal taxes

Conservative leader had claimed that a potential NDP-Liberal coalition could lead to a hike in GST

Council asks to limit cruise ship visits to Victoria harbour

Mayor says motion is not meant to curtail current visits or limit local cruise industry expansion

Chilliwack man pleads guilty in crash that killed pregnant woman

Frank Tessman charged under Motor Vehicle Act for accident that killed Kelowna school teacher

Kawhi Leonard, former Toronto Raptor, welcomed back to Vancouver at pre-season game

Fans go wild at pre-season game between L.A. Clippers and Dallas Mavericks at Rogers Arena

Greens and NDP go head to head on West Coast; Scheer takes fight to Bernier

Trudeau turns focus to key ridings outside Toronto after two days in Quebec

Most Read