Noise from helicopter flights and splicing of lines in the coming weeks

Herøya Nett notifies that they are commencing with the replacement of power lines on the stretch between Herøya Industripark and Knardalstrand. This will result in periods of noise and reduced traffic flow on Drangedalsvegen in Porsgrunn.

two men next to eachother, posing, yellow jackets, white helmets, in a street in an industry area, green trees and an indstrial building in background

Starting an extensive project this week: from left, Øyvind Nyhus, managing director, and Lars Kringlåk, project manager, both of Herøya Nett AS, are commencing an extensive project this week that will continue until the beginning of November.

It's a comprehensive project that begins in September.

Lines between the high-voltage facilities in the industrial park and the switching station at Knardalstrand are to be replaced.

Large project, many affected

"The work involves two river spans that go from the pylons, across the industrial area, the docks, across the river, and Rv356, to the pylons at Knardalstrand," says Øyvind Nyhus, managing director of Herøya Nett AS.

Helicopters will be used to transport equipment on the Knardalstrand side. In addition, there will be noise associated with splicing of lines.

"The project begins with equipment setup this week, week 37, and continues until the beginning of November. Some weeks will have less activity".

portrait of a man, wearing personal protective equipment, behind him is a blue and white building and a green hedge. — Øyvind Nyhus, managing director at Herøya Nett AS.

Noise associated with splicing of lines

In addition to some helicopter traffic and the noise it will generate, there is also a notification about noise associated with splicing of lines. This noise will be perceived as loud cracks, and there may be around 5 or 6 cracks per day during the weeks when the work is being carried out.

Reduced traffic flow on Drangedalsvegen

There will be reduced speed and traffic flow on the road Rv356, Drangedalsvegen. Cyclists and pedestians will be able to pass in groups while the lines are being replaced.

Detours in the industrial park

"The affected area in the industrial park will be marked, and detour sign will be posted. There will be large cranes in the area around the intersection of Gate 14/Gate 16, and at Building 134 during the operation," explaines project manager Lars Kringlåk, at Herøya Nett AS.

portrait of man wearing glasses and personal protective equipement — Project manager, Lars Kringlåk, Herøya Nett AS.

Preliminary schedule

Project manager Lars Kringlåk provide information about activities for the upcoming weeks.

"Nettpartner, who will be performing this job for us, will work from Monday to Saturday from 07:00 to 19:00 during the construction period. If everything goes according to plan the work should be completed early in November."

The preliminary schedule will look like this:

Week 37, 11th September - 16th September

Equipment setup. Some helicopter traffic at Knardalstrand for equipment transportation.

Week 38, 18th September - 23rd September

Lines will be replaced, large cranes in operation, and helicopter traffic. Reduced traffic flow on Drangedalsvegen, national road Rv356. Noise associated with splicing of lines.

Week 39, no major activity, free flow of traffic on Drangedalsvegen.

Week 40 and 41, 2nd October - 7th October and 9th October - 14th October

Lines will be replaced, large cranes in operation, and helicopter traffic. Reduced traffic flow on Drangedalsvegen. Noise associated with splicing of lines.

Week 42, no major activity, free flow of traffic on Drangedalsvegen.

Week 43 and 44, 23rd October - 28th October and 30th October - 4th November

Lines will be replaced, large cranes in operation, and helicopter traffic. Reduced traffic flow on Drangedalsvegen, Rv356. Noise associated with splicing of lines.