North Anna Power Station: Difference between revisions
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|type = Nuclear | |type = Nuclear | ||
|location = Louisa County, Virginia area | |location = Louisa County, Virginia area | ||
|installdate = ''Original system:'' 1981-1982<br>''Current system:'' | |installdate = ''Original system:'' 1981-1982<br>''Current system:'' 2001-2004 | ||
|status = | |status = Decommissioned | ||
|testdate = 3nd Wednesday of February, May, August, and November | |testdate = 3nd Wednesday of February, May, August, and November | ||
|testtime = Around 11:10-11:15 AM | |testtime = Around 11:10-11:15 AM | ||
}} | }} | ||
[[File:Lake Anna State Park sign.JPG|thumb|A sign near the entrance to Lake Anna State Park, with information about the plant and its system.]] | [[File:Lake Anna State Park sign.JPG|thumb|A sign near the entrance to Lake Anna State Park, with information about the plant and its system.|263x263px]] | ||
The '''Early Warning Siren System''' for the '''North Anna Power Station''' is comprised of 68 Whelen [[WPS-2800 | The '''Early Warning Siren System''' for the '''North Anna Power Station''' is comprised of 68 Whelen [[Whelen WPS-2800|WPS-2806]] and [[Whelen WPS-2900|WPS-2906]] sirens, located throughout Caroline, Hanover, Louisa, Orange and Spotsylvania counties. The sirens replaced a previous system comprised of [[Sentry 10V2T]] sirens, over a transitional period from 2001 to 2004. | ||
The system is tested on the third Wednesday of February, May, August, and November at or around 11:10 AM, in 3 minutes of alert. The system uses a sequence of three activation signals, resulting in a distinct "triple windup" sound. | The system is tested on the third Wednesday of February, May, August, and November at or around 11:10 AM, in 3 minutes of alert. The system uses a sequence of three activation signals, resulting in a distinct "triple windup" sound. | ||
Most sirens use 560 Hz ESC-2020 controllers; however, a few use 435 or 465 Hz tones. | Most sirens use 560 Hz ESC-2020 controllers; however, a few use 435 or 465 Hz tones. | ||
In February 2023, Dominion Energy decommissioned the siren system and switched to IPAWS<ref>https://www.dominionenergy.com/projects-and-facilities/nuclear-facilities/alert-transition-faqs</ref>. Sirens are expected to soon be removed, but none have been removed as of 2024. | |||
==See also== | ==See also== | ||
Latest revision as of 01:38, 28 August 2024
| North Anna Power Station | |
 Siren #56, in Louisa County | |
| Type | Nuclear |
|---|---|
| Location | Louisa County, Virginia area |
| Date installed | Original system: 1981-1982 Current system: 2001-2004 |
| Status | Decommissioned |
| Testing dates | 3nd Wednesday of February, May, August, and November |
| Testing times | Around 11:10-11:15 AM |
The Early Warning Siren System for the North Anna Power Station is comprised of 68 Whelen WPS-2806 and WPS-2906 sirens, located throughout Caroline, Hanover, Louisa, Orange and Spotsylvania counties. The sirens replaced a previous system comprised of Sentry 10V2T sirens, over a transitional period from 2001 to 2004.
The system is tested on the third Wednesday of February, May, August, and November at or around 11:10 AM, in 3 minutes of alert. The system uses a sequence of three activation signals, resulting in a distinct "triple windup" sound.
Most sirens use 560 Hz ESC-2020 controllers; however, a few use 435 or 465 Hz tones.
In February 2023, Dominion Energy decommissioned the siren system and switched to IPAWS[1]. Sirens are expected to soon be removed, but none have been removed as of 2024.
See also
- Surry Power Station, also located in Virginia, and with an identical siren composition
