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Reference, Questions and Help => Polls => Topic started by: Roll Tide on Oct 02, 2004, 05:21

Title: BWR Orientation (North)
Post by: Roll Tide on Oct 02, 2004, 05:21: Most people would hesitate before asking a stupid question, but I am ready to step right up. As we say here, there are no stupid questions, but there are plenty of inquisitive idiots! ;)

Every place I have seen other than here, it has always been 0 (and 360). Some people tell me Browns Ferry is 180 degrees out of the rest of the world, but others tell me it is all GE / BWR. ;D

And please, definitely explain "other" if you vote that way!!
Title: Re: BWR Orientation (North)
Post by: Roll Tide on Oct 03, 2004, 02:53: 25 views and no votes besides mine???

I guess there really are some stupid questions!

(Of course, if no one else can understand why North would EVER be 180 degrees, my conclusion regarding BFN being 180 out from the rest of the world is proven!)
Title: Re: BWR Orientation (North)
Post by: Already Gone on Oct 03, 2004, 08:10: I don't think "North" is ever aligned with the actual Cardinal Direction, either magnetic or geographic. Pilgrim's "plant north" is almost due east by the compass. I also don't think this is unique to BWR's. I think I remember working a two-unit PWR with mirror image containments where "North" was in the middle.
Title: Re: BWR Orientation (North)
Post by: halflifer on Oct 05, 2004, 02:08: it's been a while, but as recall, 0/360 is where the MS/FW lines enter (or leave) the drywell and isn't supposed to indicate North, people just started calling it that.
Title: Re: BWR Orientation (North)
Post by: Atomic_Punk on Oct 05, 2004, 03:33: Does anyone know why there is such a thing as "plant north"? I've always wondered, but could never stay focussed long enough to ask :)
Title: Re: BWR Orientation (North)
Post by: Already Gone on Oct 05, 2004, 04:23: "Plant North" is just a way of keeping the orientation of things in perspective. People in different buildings or elevations can coordinate things as long as they work from the same reference. As has been posted before, it has nothing to do with actual direction. Two plants built from the same exact design will have the same "North", but they will probably face different directions.
Title: Re: BWR Orientation (North)
Post by: jjordan on Oct 05, 2004, 05:57: I work in a 2 unit BWR and will have to get out the maps to check to see in degrees. Both units are oriented the same direction, not mirror images. Now if it was a PWR it would be really easy cause everyone knows that boron grows on the north side of the valve! 8)
JJ
Title: Re: BWR Orientation (North)
Post by: Nuclear NASCAR on Oct 05, 2004, 06:20: Quote from: Beer Court on Oct 05, 2004, 04:23
"Plant North" is just a way of keeping the orientation of things in perspective. People in different buildings or elevations can coordinate things as long as they work from the same reference. As has been posted before, it has nothing to do with actual direction. Two plants built from the same exact design will have the same "North", but they will probably face different directions.

Kinda like the SNUPPS that did get built. Plant North is the same at both but only one actually faces north with its north.
Title: Re: BWR Orientation (North)
Post by: UncaBuffalo on Oct 08, 2004, 07:15: Quote from: JJordan on Oct 05, 2004, 05:57
Now if it was a PWR it would be really easy cause everyone knows that boron grows on the north side of the valve! 8)
JJ

:)
Title: Re: BWR Orientation (North)
Post by: rlbinc on Apr 05, 2007, 07:32: It varies from site to site. Clinton faced Northeast, the prints called it Plant North. Look at most sites from Google Map, and you'll see very few are North / South aligned. Since I came from the Navy, I was used to Forward and Aft, no matter which way it pointed.
Title: Re: BWR Orientation (North)
Post by: Fermi2 on Apr 05, 2007, 09:45: By GE Nomenclature the Plant North is as AZ 0 where the Steam Lines penetrate the Drywell.. At Fermi it was East.

Mike
Title: Re: BWR Orientation (North)
Post by: vikingfan on Sep 12, 2007, 09:47: this depends upon the plant for instance at vermont yankee North is at 270 degrees. not really sure why plant az O is facing east....lol?