Nuclear Power Plant Siren Systems

[AllSafe]

Oak Ridge in Tennessee has the http://www.china-alarm.com/Product/EN/p ... ductid=101

No, it's an ACA Alertronic 6000.

[500AT]

Michigan, Fermi II:

Federal 2001 AC/DC units

Prior to this, they had a series of Whelen WPS-4000 and WPS-2000-16 units.

The older Fermi I plant in Monroe, Michigan:

Federal: 500AT, 550AT, SD-10s, and Model 5ATs

[mgear]

Oak Ridge in Tennessee has the http://www.china-alarm.com/Product/EN/p ... ductid=101

No, it's an ACA Alertronic 6000.

Oh they look really close to each other then.

[tboltkid520]

Monticello Nuclear Generating Plant, Monticello, MN: 58 active Sirens, tested weekly.

Prairie Island Nuclear Power Plant, Welsch, MN: 28 active Sirens, tested weekly. All 28 are placed to cover the 10 mile radius around the plant.

I know for a fact that the Prairie Island system has a yellow Modulator right across from the plant, and the rest are 2001s as far as I can tell, Monticello may be the same but I don't have a definite answer.

[va_nuke_pe]

Susquehanna - they publicly announced that they were not going to operate the ATI horns and are suing ATI for non-performance. I don't think they have publicly announced who the replacement vendor is. The present system has 114 sirens, the new one will have ~80 sirens.
Calvert Cliffs - predominantly T-128's with a few T-121's - 73 sirens in all.
Diablo Canyon - replaced their sirens on a one-for-one basis with Federal 2001SRN-B, Eclipse, and Eclipse8 sirens - all can operate on battery back-up. They test once per year in August - ~130 sirens in all.
San Onofre expands its siren based on new housing developments going in. They use all Whelen's.
D C Cook - all Whelen's in their new system - WPS-2750, WPS-2800 and WPS-2900's - predominantly 5's with a few 6's - ~40.
Artificial Island (Hope Creek/Salem) - their new system uses all T-121's - ~50.
Limerick and Peach Bottom - use predominantly T-Bolts, with a few 2001's for some recent replacments. Limerick has ~165 sirens and PBAPS has ~100.
TMI - 104 sirens in a mixed bag of 2001's, Cyclones, P-10's and maybe a T-128 or two.
Exelon Illinois - Byron/Braidwood/Quad Cities/Clinton/LaSalle - they are in the process of changing over to all ASC's. The new systems will be T-128's and T-132's - all of which will operate on battery back-up. The P-50/T-135 is AC power only. The T-132 looks like a T-128 on steriods.
Monticello and Prairie Island both have ~100 sirens each. All but one are 2001's. The Modulator is in front of the casino near the front gate to Prairie Island. It "stutters" at site area emergency to warn people inside the casino. Normally, the sirens are to go off when a general emergency is declared - SAE is one step down from that.
Palisades - all 2001's
Davis-Besse - all 2001's
Fermi 2 - all 2001's
Beaver Valley - a mixed bag. The new sirens are all 2001's. They also have P-10's, Cyclones and a pair of Klaxon horns at the nudist colony along the PA-OH border.
Comanche Peak - the older sirens are T-beams. The newer sirens and add-ones are 2001's.
Grand Gulf - uses all ASC - I think they are all T-121's.
River Bend and Waterford use predominantly Whelen 2800's with a few 2000's and 3000's thrown in.
Pilgrim uses all Federal - the new ones are all Modulators with some EOWS-115's (all upgraded electronics) thrown in.
Seabrook uses Whelens - Model 3000 and Model 4000's.

[Rheems1]

Hmm... that is very interesting to me!! Susquehanna Steam is not liking thier new sirens... who saw THAT coming (rotating ATI's). I hope and pray they replace them with Modulators... but I am a realist and will still go up and take a single picture of one of thier 2001's (which is probably the siren they will replace them with). I was driving in Strinestown, York County, Pa and happened by the Cyclone (TMI System) that malfunctioned and went off for 40 minutes in 2005..... it was supposed to have been replaced. Well to my surprise it has been replaced (though is still standing) by a shiny new T-121, for the longest time TMI was replacing their sirens with 2001's. We shall have to see what this brings... as a side note... a digression even... the T-121 has to be the ugliest siren currently produced. It looks TERRIBLE!! I photographed one inside a firehouse in Minersville, Pa (pictures to come) without it's horns (the horns were on a shelf over top of it) and it looks ok without the horns (although small)... those horns really add an ugly factor!!!!

Dave Fritz

[va_nuke_pe]

The T-121 is reliable and does it job. Sentry, Federal and American Signal all produce very reliable omni-directional electro-mechanical sirens - none of them would win a beauty contest. Whelen electronic "hamburger stack" 2700/2800/2900 series aren't exactly pretty either. They are also very reliable omni-directional devices.

That is what those devices are stuck up on the poles for - being reliable and loud enough to be heard. "Pretty" is nice; but I wouldn't choose to sacrifice performance for looks.

[Justin]

That is what those devices are stuck up on the poles for - being reliable and loud enough to be heard. "Pretty" is nice; but I wouldn't choose to sacrifice performance for looks.

Hehe, one of my jokes in my DesignTech folio.

"[Sirens] aren't installed to look pretty".

Personally, I don't think the T-121 looks bad at all. Rather threatening actually.

[dboyle]

TMI - 104 sirens in a mixed bag of 2001's, Cyclones, P-10's and maybe a T-128 or two.

it used to be 96 sirens, unless they've added some.

we're strictly Cyclones and Penetrator 10s, and recently, a few 2001 SRN-Bs have been popping up here to either replace the P10s or fill in gaps in the rural areas. I have yet to see anything but a C125, P10, or 2001. haven't seen a T128 yet.

I can post pictures and recordings.

[dboyle]

I was driving in Strinestown, York County, Pa and happened by the Cyclone (TMI System) that malfunctioned and went off for 40 minutes in 2005..... it was supposed to have been replaced. Well to my surprise it has been replaced (though is still standing) by a shiny new T-121, for the longest time TMI was replacing their sirens with 2001's. We shall have to see what this brings...

WOW, where was this???!! I must have missed one. the only sirens I'm aware of in Strinestown are the Cyclone along the Susquehanna Trail right off I-83 at the auto auction lot, and the other Cyclone further down the susq trail right near a row of houses. I haven't seen a T121 in our EPZ.

if this is the siren I think you're talking about, the 40-minute malfunction was actually in very early 2002. It's in newberrytown, which is a few miles north of strinestown, along potts hill road. the cyclone is still standing, but there's a new 2001 SRNB right next to it.