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Reference, Questions and Help => Nuke Q&A => Topic started by: sunpaw on Sep 08, 2009, 01:35

Title: plane & line source
Post by: sunpaw on Sep 08, 2009, 01:35

Or is it...

you have a plane source 20'x20' reading 15rem/hr@2". Covering that plane source is 6 feet of high density concrete. In the middle of said concrete is a 1/2" x 8' horizontal gap. what is the reading @ 2 inches from this gap?

Show your work  :)

Title: Re: plane & line source
Post by: Chimera on Sep 09, 2009, 12:11

I want to know how you're going to get your meter through 3 feet of concrete to verify my answer.

Title: Re: plane & line source
Post by: atomicarcheologist on Mar 23, 2012, 03:31

Quote from: Roy Lightfoot on Sep 08, 2009, 01:35

Or is it...

you have a plane source 20'x20' reading 15rem/hr@2". Covering that plane source is 6 feet of high density concrete. In the middle of said concrete is a 1/2" x 8' horizontal gap. what is the reading @ 2 inches from this gap?

Show your work  :)

Radius of source= 20x20=400/3.1416=11.3ft.
6'2'' < 0.7 x Radius
Thumb Rule(s)
constant D/R (15Rem/Hr) from source to 0.1Radius (1.13ft)
0.1 Radius - 0.7 Radius = 1/3 Constant D/R = 5Rem/hr.

5 Rem/Hr.  Final Answer

Title: Re: plane & line source
Post by: Rennhack on Mar 23, 2012, 06:16

Quote from: Atomic Archeologist on Mar 23, 2012, 03:31

5 Rem/Hr.  Final Answer

I was gonna give you crap for digging up a post dead for 3 years, then I realized your handle was "Atomic Archeologist", and that's kinda your job, I suppose.

Title: Re: plane & line source
Post by: wasteman on Mar 23, 2012, 06:38

give him a break, he's been working on solving the problem for three years!!

Title: Re: plane & line source
Post by: GLW on Mar 23, 2012, 10:46

Roy never specified PCF,...

Title: Re: plane & line source
Post by: atomicarcheologist on Mar 26, 2012, 07:58

Quote from: Rennhack on Mar 23, 2012, 06:16

I was gonna give you crap for digging up a post dead for 3 years, then I realized your handle was "Atomic Archeologist", and that's kinda your job, I suppose.

No wonder you're the boss!  Took the wind right out of my sails by picking up on that immediately.   [censored]  I guess I'll have to pick my shovel up and go somewhere else. 
BTW,  [2cents] I thought it interesting that no one got on this in three years.