InPower BC CEO Paul Sawyer (left) discusses the water release valves with North Island MLA CLaire Trevena. The John Hart Dam is the concrete structure to the right. Photo by Alistair Taylor/Campbell River Mirror

VIDEO: BC Hydro to flood John Hart generating station tunnels later this month

The John Hart Generating Station replacement project will soon turn on the taps and fill up the underground tunnels of the new underground hydroelectric generating facility on the Campbell River.

“It’s all culminating with this amazing ability for having waterflow starting this year,” said BC Hydro spokesperson Stephen Watson during a tour of the facility last week. “We’re going to have the water flowing into the tunnels end of March.”

That will be followed by two large water release valves taking over the flow of water into the Elk Falls canyon. Presently, the water is released through gates in the John Hart Dam. Two large water release valves will provide the water flow down Elk Falls Canyon.

The John Hart Generation Station replacement project is a $1.093 billion project replacing the 70-year-old John Hart Generating Station – which exists on the surface at the entrance to Elk Falls Canyon on the Campbell River – with a fully-underground facility built into the bedrock.

Water will actually be running through the tunnels by May and the first of the new turbines will be operating by June with the entire facility up and running by October.

The project was initiated in 2007 and construction began in 2014.

“I’ve been fortunate enough to be involved in the project since it started in 2007. It’s been almost 11, 12 years in the making, when it’s all been said and done, and to see it happening like this, the challenges that the contractor has done a great job to overcome, it’s just a really exciting time for this community.”

Once completed, Watson said BC Hydro attains a facility that fulfills three goals: it’s seismically strong, embedded in bedrock; it protects downstream fish habitat by maintaining constant flows because of a bypass facility just to keep those flows going; and the power utility has a new generating facility that will last another 70 years.

“It’s extraordinarily impressive what’s been happening here for the last four years,” North Island MLA Claire Trevena said. “We’ve seen exponential growth from nothing through to a massive cavern to now where we have turbines in place, we have all the valves ready to go we’ve got the work completing.

“It’s been an extraordinary project.”

While turning on the taps is a nice metaphor, it’s not actually that simple. The process is done in stages (see diagram below):

Step 1: The water intake and valves:

First, water from the new intake at the dam will fill the water intake structure.

Second, with water from the intake structure, the two water release valves that will provide the water flow down Elk Falls Canyon will become operational.

Step 2: Tailrace and power tunnel:

To add water in tailrace tunnel, BC Hydro will pull the metal stop logs at the tunnel outlet and slowly allow water to enter the tunnel. This may take a day.

To fill the power tunnel, the large operating gate within the water intake structure will be opened in stages. There are seven steps for watering up the power tunnel and it may take two weeks to complete.

Step 3: Start commissioning/wet testing:

Once all the water is in, Hydro will begin preparing for operation of the generators and water bypass facility.

Get local stories you won't find anywhere else right to your inbox.
Sign up here

 

Diagram depicts the underground tunnels that convey water from the John Hart reservoir (far left of the diagram) down the power tunnel into the generating station where the three generators lie and then out into the Campbell River on the far right. The release valves are depicted in the top left corner of the diagram and exist on the downstream side of the John Hart Dam. Source: John Hart Generating Station Replacement Project Feburary 2018 Community Construction Update Report #56.

Just Posted

RCMP
RCMP know of witnesses to Oct. 15 attack; want them to come forward

Appeal made to their ‘sense of right and wrong’

BC ELECTION
Liberal and NDP leaders’ election tours swing through North Island

Wilkinson holds forestry rally and Horgan talks wild salmon

MARS Wildlife Hospital just got approval for a new ambassador bird. They are hoping the community will help come up with a name for the bird, currently known as Barred Owl 783. Here, Barred Owl 783 stretches their wings as they’re accompanied by MARS President Warren Warttig on Oct. 11, 2020. Photo by Marissa Tiel – Campbell River Mirror
Hoot, hoot: MARS Wildlife Centre looks for name for new ambassador bird

Barred Owl 783 came to the wildlife centre after crashing into a window last fall

Is it time to start thinking about greener ways to package cannabis?

Packaging suppliers are still figuring eco-friendly and affordable packaging options that fit the mandates of Cannabis Regulations

Join Black Press Media and Do Some Good

Pay it Forward program supports local businesses in their community giving

With local MLA Adam Olsen looking on, BC Greens leader Sonia Furstenau said a Green government would convert BC Ferries into a Crown corporation Wolf Depner/News Staff)
Green leader Sonia Furstenau promises to convert BC Ferries back into Crown corporation

Promise comes Monday afternoon with five days left in campaign

A passer-by walks past a COVID-19 testing clinic in Montreal, Friday, Oct. 16, 2020. THE CANADIAN PRESS/Ryan Remiorz
Canada ‘yet to see’ deaths due to recent COVID surge as cases hit 200,000

Much of the increase in case numbers can be attributed to Ontario and Quebec

Police confirm human remains were found in a recycling bin in Vancouver on Oct. 18, 2020. (Black Press Media file photo)
Human remains found in recycling bin floating near Vancouver beach

Police asking nearby residents to see if their recycling bin has gone missing

(File photo)
RCMP: Two men face charges in reported Parksville fatal hit-and-run

Investigation into man’s death began in August of 2019

B.C. Liberal leader Andrew Wilkinson visits a North Vancouver daycare to announce his party’s election promises for child care, Oct. 9, 2020. (B.C. Liberal Party video)
B.C. parties pitch costly child care programs in pandemic

B.C. Liberals say they’ll deliver on NDP’s $10-a-day promise for lower-income families

Most Read