Thanks to all for the replies and advice.
What are the Isotopes you’re working with Ray?
Have you performed core samples to verify the actual penetration?
RadGhost: Predominately Cs-137 with U, Th and Pu from fuel decladding and a little Co-60. Cs-137 is generally at 90% or above. These vaults are at a higher alpha level than normally seen at the facility. The 2" came from search and destoy operations. The crew does removal and the HP techs look until it is clean. Those operations gave me the 2" depth number. This facility will not get a MARSSIM survey, because none of it can be sent to a standard waste site because of State regulations. It will all have to go to either rad or hazardous burial. Hot and unreleasable goes to rad, clean goes to hazardous. We don't need trick cores etc to tell us this.
Why mess around with jackhammer operations with 2" of contaminate penetration? Use concrete saws and cut the concrete into sizes that can be lifted, contained, and disposed of in your dedicated waste stream.
Atomic Archeologist, see above. It all has to be removed and buried somewhere. We are experienced with saw cutting and it is much more expensive than jack-hammering. We are looking for advice on keeping the workers out of respirators (inexpereinced contrators) and saving money.
Ray you need to contact Margaret Kimokeo @ T.E.A.M. Concepts Engineering,LLC
Thanks Sapp, I will contact them.
Can you consider ultra high pressure water?
MARSSIM, our plans are to decon the hottest areas with respirators with our expereinced technicians (enclosed facility with ventilation) and then apply a fixative and let the contractors rubbleize the remaining low level concrete. We may already have gotten rid of spills that soaked in deep, so my earlier point about fixatives may be wrong.
Thanks again for the time spent by everyone in the replies. I have things to investigate now. This is what I was looking for. If something else comes to mind, then please keep posting.