City Light Completes Cable Injection in Lake Forest Park

Earlier this fall, Seattle City Light completed its silicone cable injection work in Lake Forest Park. The project began in September 2016 to enhance the reliability and extend the life of aging underground electrical cables in parts of Lake Forest Park by injecting them with silicone.

City Light’s contractor, Novinium, tested and where possible, injected about a mile of underground cable with silicone to fill cracks in the cable insulation to prevent outages. This work extends the life of the cable for an additional 25 years and improves electrical reliability.

Example photo of typical cable injection work.

Approximately 50 percent (half a mile) of the total underground cable from this project was suited to injection. The remaining 50 percent of cable was not suited for injection and will be replaced at a later time.

Past cable injection projects in areas such as Shoreline and Seattle’s Capitol Hill neighborhood have succeeded in extending the lifespan of aging cables and improving reliability at a lower cost than replacement. A 2011 cost comparison showed that the average cost of cable injection was $25, compared to $248 for cable replacement.

For more information about this project and other City Light construction projects, please visit our website: http://www.seattle.gov/light/atwork/.

City Light to Upgrade Electrical Cable in Lake Forest Park

Starting in early September 2016, Seattle City Light will be upgrading the aging electrical cable in parts of Lake Forest Park to help improve the electrical reliability in the area. City Light’s contractor, Novinium, will test and where possible, inject underground cables with silicone to fill cracks in the cable insulation to prevent outages. If cables are not suited for injection, they will be replaced at a later time.

Map of the construction work areas (from NW 195th St to NE 205th St)

Map of the construction work areas (from NE 185th St to NE 195th St)

The contractor, Novinium will be working for a total of 13 days in the month of September. Daily work hours are scheduled from 8:30 a.m. to 4:30 p.m. Evening and weekend work is not planned.

One maintenance outage is anticipated for this work. All affected customers will be notified on the Thursday before the following week’s outage. The outage date and time will be specified on the notification.

Traffic and parking impacts are expected in the immediate area during work hours. Flaggers will be used where needed on residential streets and crews will be careful to maintain access to driveways.

For more information, please contact John Likes, Electrical Service Representative at (206) 615-0608 or john.likes@seattle.gov.

Visit the City Light construction website for the latest updates on this project: http://www.seattle.gov/light/atwork/release.asp?RN=367.

City Light Plans Silicone Cable Injection In Parts of Service Territory

Seattle City Light will start another project this October to enhance the reliability and extend the life of aging underground electrical cables in parts of Shoreline, Lake Forest Park and Seattle by injecting them with silicone.

City Light’s contractor, Novinium, will test and where possible, inject underground cables with silicone to fill cracks in the cable insulation to prevent outages. This work will extend the life of the cable for an additional 25 years and improve electrical reliability. If cables are not suited for injection, they will be replaced at a later time.

Please refer to the construction notification fliers for approximate construction areas:

This project is expected to start in early-to-mid October 2015 and extend for approximately six weeks. Work hours are scheduled for Monday to Friday, from 8:30 a.m. to 4:30 p.m. During construction, customers should expect some traffic and parking impacts in the immediate area. Crews will be careful to try and maintain access to driveways.

Several maintenance outages are required for this work. Affected customers will be notified the Thursday before the following week’s outage. The outage date and time will be specified on the notification.

Past cable injection projects in neighborhoods such as Sandpoint, Queen Anne and Delridge have succeeded in extending the lifespan of aging cables and improving reliability at a lower cost than replacement. A 2011 cost comparison showed that the average cost of cable injection was $25, compared to $248 for cable replacement.

Customers can contact the following Electrical Service Representatives for more information:

For more information, please visit our construction website: http://www.seattle.gov/light/atwork/release.asp?RN=340