FacEngrPE
Mechanical
- Feb 9, 2020
- 1,611
February 3 at 1:38 PM · Just before 4 pm today, school administrators initiated evacuation procedures due to reports of an electrical issue in the main electrical room. As emergency responders arrived, an active fire was discovered. The fire was contained to that electrical room though smoke did spread through parts of the building. Due to the nature of this incident, power to the building remains off and Dominion Energy is on site assessing the situation. We do not yet have an estimate for power restoration or a timeline for necessary repairs.
Background
The Grafton complex houses a Grafton Middle School and Grafton High School. Location 403 Grafton Dr, Yorktown, VA USA, Aerial Photograph Complex opened in 1996.
While I do not have specifics it is usual practice here for buildings of this size to distribute electrical power at 480V 3phase, building loads are 480/277 or 208/120, with transformation to 208/120 near using panelboards. The Dominion Power would provide a transformer close to the electrical room. At this voltage level arcing faults can be sustained for a long time.
Sprinkler system did it's job, fire contained to the electrical room, no injuries.
Grafton Va School Complex Update Feb 6, 2020 - good pictures of destroyed main electrical panel.
Restoration of power to the complex will take months.
Soot is now considered a Hazardous Material, cleanup in progress.
Students will now share space with York Highschool, and Tabb Middle school.
Friday, February 7, 2020 – Letter from the Superintendent York County Schools
Disrupted students - will be sharing school space in shifts for several months.
Grafton Middle School 882
Grafton High School 1185
York High School 1075
Tabb Middle School 921
Disaster? depends on definition - for sure disruptive and costly.
Background
The Grafton complex houses a Grafton Middle School and Grafton High School. Location 403 Grafton Dr, Yorktown, VA USA, Aerial Photograph Complex opened in 1996.
While I do not have specifics it is usual practice here for buildings of this size to distribute electrical power at 480V 3phase, building loads are 480/277 or 208/120, with transformation to 208/120 near using panelboards. The Dominion Power would provide a transformer close to the electrical room. At this voltage level arcing faults can be sustained for a long time.
Sprinkler system did it's job, fire contained to the electrical room, no injuries.
Grafton Va School Complex Update Feb 6, 2020 - good pictures of destroyed main electrical panel.
Restoration of power to the complex will take months.
Soot is now considered a Hazardous Material, cleanup in progress.
Students will now share space with York Highschool, and Tabb Middle school.
Friday, February 7, 2020 – Letter from the Superintendent York County Schools
Disrupted students - will be sharing school space in shifts for several months.
Grafton Middle School 882
Grafton High School 1185
York High School 1075
Tabb Middle School 921
Disaster? depends on definition - for sure disruptive and costly.
