Showing posts with label substation. Show all posts
Showing posts with label substation. Show all posts

Wednesday, March 3, 2021

Electrical Substation Work At Park Ongoing

 





Seattle Public Utilities is currently doing work at the former electrical substation at the south end of Laurelhurst Park near the tennis courts at 4502 NE 41st Street,.

In September 2019 SPU salvaged the old Laurelhurst Substation equipment which was decommissioned.

Seattle City Light told the Laurelhurst Blog Staff, at the time, that the equipment was no longer needed, but the substation property would remain with one high voltage switch still in service.

SPU said that the benefits of decommissioning the equipment has given the customers better system reliability by moving from the phasing out 4,000 volt system to the current 26,000 volt distribution system. Another benefit is removing the hazard of having thousands of gallons of dielectric oil removed from the existing transformers on-site. All of the aging equipment was also removed.

In May 2014, LCC wrote in their Laurelhurst Letter that neighbors should consider emailing City Council to support surplus Electrical Substations being turned into Park space rather than a new development. 

Scott Thompson, with Seattle City Light, told the Laurelhurst Blog at the time that "other small substations like Laurelhurst have been taken out of service in other parts of our service territory and some of those properties are being reviewed for possible sale now that we are no longer using them. That is not the case in Laurelhurst."

Seattle City Light completed the upgrade of power lines from 4,000 to 26,000 Volts to the south portion of Laurelhurst in January of 2011. The boundaries for the upgrade were NE 38th Street on the north, NE 33rd Street on the south, East Laurelhurst Drive NE on the east and 43rd Avenue NE on the west. Old cable was removed and replaced with newer, more reliable cables.


The SPU website says about the current project:


Project Details

Electrical Improvements at Laurelhurst Substation


Posting Date: 1/12/2021                

Contact: Rose Peterson - Electrical Service Representative

Phone: (206) 684-4986


Project Overview

Seattle City Light crews will be working inside the Laurelhurst Substation to remove aging equipment and install new electrical conduit.

Construction Work Area

Project Benefits

This work is needed to upgrade the electrical infrastructure in the Laurelhurst neighborhood.

Project Impacts

  • Crews will be working inside the substation to remove an old transformer concrete pad and other associated equipment. Crews will also trench and install new electrical conduit.
  • An excavator will be used during construction, which may produce some loud noises.
  • Maintenance power outages are not planned during this work.
  • Customers can expect some parking, sidewalk and traffic restrictions along NE 41st Street.


SCHEDULE

Construction Start: mid-January 2021

Duration: Up to two months

Daily Work Schedule: Mon-Fri: 9 a.m.-3 p.m., Sat: 9 a.m.-5 p.m.

Friday, January 22, 2021

Electrical Substation Near Tennis Courts Undergoing Electrical Improvements




Seattle Public Utilities is currently doing work at the former electrical substation at the south end of Laurelhurst Park near the tennis courts at 4502 NE 41st Street,.

In September 2019 SPU salvaged the old Laurelhurst Substation equipment which was decommissioned.

Seattle City Light told the Laurelhurst Blog Staff, at the time, that the equipment was no longer needed, but the substation property would remain with one high voltage switch still in service.

SPU said that the benefits of decommissioning the equipment has given the customers better system reliability by moving from the phasing out 4,000 volt system to the current 26,000 volt distribution system. Another benefit is removing the hazard of having thousands of gallons of dielectric oil removed from the existing transformers on-site. All of the aging equipment was also removed.

In May 2014, LCC wrote in their Laurelhurst Letter that neighbors should consider emailing City Council to support surplus Electrical Substations being turned into Park space rather than a new development. 

Scott Thompson, with Seattle City Light, told the Laurelhurst Blog at the time that "other small substations like Laurelhurst have been taken out of service in other parts of our service territory and some of those properties are being reviewed for possible sale now that we are no longer using them. That is not the case in Laurelhurst."

Seattle City Light completed the upgrade of power lines from 4,000 to 26,000 Volts to the south portion of Laurelhurst in January of 2011. The boundaries for the upgrade were NE 38th Street on the north, NE 33rd Street on the south, East Laurelhurst Drive NE on the east and 43rd Avenue NE on the west. Old cable was removed and replaced with newer, more reliable cables.


The SPU website says about the current project:


Project Details

Electrical Improvements at Laurelhurst Substation


Posting Date: 1/12/2021                

Contact: Rose Peterson - Electrical Service Representative

Phone: (206) 684-4986


Project Overview

Seattle City Light crews will be working inside the Laurelhurst Substation to remove aging equipment and install new electrical conduit.

Construction Work Area

Project Benefits

This work is needed to upgrade the electrical infrastructure in the Laurelhurst neighborhood.

Project Impacts

  • Crews will be working inside the substation to remove an old transformer concrete pad and other associated equipment. Crews will also trench and install new electrical conduit.
  • An excavator will be used during construction, which may produce some loud noises.
  • Maintenance power outages are not planned during this work.
  • Customers can expect some parking, sidewalk and traffic restrictions along NE 41st Street.


SCHEDULE

Construction Start: mid-January 2021

Duration: Up to two months

Daily Work Schedule: Mon-Fri: 9 a.m.-3 p.m., Sat: 9 a.m.-5 p.m.

Wednesday, September 18, 2019

Laurelhurst Substation, Near Tennis Courts, Decommissioned








Seattle City Light has completed work at the Laurelhurst Substation, located south of the tennis courts in the Park.

The project was to salvage the old Laurelhurst Substation equipment which has been decommissioned.

Seattle City Light told the Laurelhurst Blog Staff that the equipment is no longer needed, but the substation property will remain with one high voltage switch still in service.

The benefits of decommissioning the equipment has given the customers better system reliability by moving from the phasing out 4,000 volt system to the current 26,000 volt distribution system, Seattle City Light said. 

Another benefit is removing the hazard of having thousands of gallons of dielectric oil removed from the existing transformers on-site. All of the aging equipment was also removed.

Seattle City Light completed the upgrade of power lines from 4,000 to 26,000 Volts to the south portion of Laurelhurst in January of 2011. The boundaries for the upgrade were NE 38th Street on the north, NE 33rd Street on the south, East Laurelhurst Drive NE on the east and 43rd Avenue NE on the west. Old cable was removed and replaced with newer, more reliable cables.





Wednesday, May 19, 2010

Equipment Upgrades Underway at Laurelhurst Substation


Seattle City Light is making several upgrades to the equipment at its Laurelhurst Substation, located at the base of the park at  4502 NE 41st Steet.

The work started Monday and will continue go on for about 10 days.  There will be trucks and other vehicles on site and in the street adjacent to the substation.


City Light will be installing higher-voltage lines and replacing three transformers. No customer outages are planned as part of this work.

The press release says:

City Light is replacing and up-grading old 4 kilovolt power lines with 26 kilovolt lines that are standard equipment for most of the utility’s distribution system. As a part of this work, crews will replace three auxiliary transformers known to contain polychlorinated biphenyls (PCBs) with new transformers that do not use PCBs.


PCBs are man-made compounds that were used extensively in hundreds of commercial and industrial applications due to their non-flammability, chemical stability, high boiling point, and electrical insulating properties.


Their manufacture was banned in 1979 because it has been shown that direct exposure can cause cancer and a variety of other adverse health effects on the immune system, reproductive system, nervous system and endocrine system. City Light has a goal to remove any remaining PCB transformers in our system by the end of 2010.


The PCB transformers being removed from the substation will be secured in containers on site, and then moved to another facility for safe removal of the chemicals and proper disposal. Employees working directly with these transformers and their housings will be wearing hazardous material (haz mat) suits to guard against exposure. Seattle City Light workers have considerable experience with transformer removal and have extensive training in the safe handling of these materials. The transformers will remain sealed throughout the removal process.

Here is the full press release.