Re: Ni-63

["Gerry W. Kindred" <gwkindred@centerior.com>]

gwkindred@centerior.com


----------
> From: Gerry W. Kindred <gwkindred@centerior.com>
> To: radsafe@romulus.ehs.uiuc.edu
> Subject: Re: Ni-63
> Date: Friday, January 09, 1998 1:07 PM
> 
> From the 1992 ASME Boiler and Pressure Vessel Code, Part A,
> Ferrous Material Specifications:  For ASTM Spec A105/SA-105M
> Carbon Steel, nickel resides as an impurity.  The limit is 0.40% 
> which works out to 4000 ppm. For SA-216/SA-216M the limit is 0.50%.
> For stainless steels, nickel ranges from 3.5% (Type 201) to 23% 
> (Type 310).  For conrete, I talked with our civil/strucrural engineers, 
> they did not know of an application that would use nuckel as an
> additive.  It may exist as an impurity with other additives; however,
> we could not find any reference to that. For heavyweight concrete, 
> heavy aggregates such as heavy iron ores or barite (barium sulfate) 
> is typically used.   
> 
> 
> 
> ----------
> > From: jcehn@worldnet.att.net
> > To: radsafe@romulus.ehs.uiuc.edu
> > Subject: Ni-63
> > Date: Friday, January 09, 1998 12:29 AM
> > 
> > 
> > 
> > 
> > Looking for information on activation product Ni-63 in concrete and
> steel.
> > Stainless steel has plenty of Ni-62 to be activated, but does anyone
have
> > information on nickel in carbon steel and/or concrete?  Thanks in
> advance.
> > =-=-=Joel Cehn, jcehn@worldnet.att.net
> >