Reference, Questions and Help > Lessons Learned
how hot is clean?
atomicarcheologist:
--- Quote from: RDTroja on May 17, 2005, 07:14 ---I have to admit total ignorance when it comes to D&D work, but if 100K/100cm2 of Co60 is releasable anywhere, then what the hell are we worried about releasing items and areas that are over 1Kdpm/100cm2 in the commercial end of the world? Or for that matter having release limits of 'No detectible activity' even considered if we are just going to release it all later at 100K?
That does not compute...
--- End quote ---
OK, I may have gone overboard with the 100K Co60. When we were sitting around (originally, please note starting post) finishing off the meager stash of XX and 1812 in the local tavern, we started messing with numbers. I believe the we figured we could do at least 50K dpm/100cm2 direct read.
This exercise did include the assumptions that it would be a single spot of residual, there would be no smearable, and singular isotope. These were in place to preclude taunting and torment from those whose evening's intake may have adjusted their mentality from the analytical to the subversive.
Anyone care to play with us? Not that the etheral discussions ongoing through this thread are misguided, quite the contrary as they are most welcome in this exchange of information and ideas and hasten the advancement of the Health Physics disicpline on the street.
Shonkatoys:
Forgot to mention when the Job site has numerous HP jobs to include job coverage and survey. The survey techs are usually the bottom of the barrel techs who can not do anything else. This also makes surveys suspect if they are not recorded with 21st century instruments. Half the techs that did primarily surveys that I know I would not want to approve their surveys. So how does Marssims fit into this equation? How hot is clean. Depends if a drunk even surveyed it or not. seen over 1 million dpm come back and the tech sweared they surveyed it. They let him slide cause he was one of the boys. So 1 million or more dpm for dirtballs is the answer. The limits set forth by the facility if it is recorded properly with 21st century technology. So like I said party hard because I believe the Marssisms game is about over, unless properly recorded.
alphadude:
gee shonka toys now everybodies using a CFD (cumulative frequency distribution) imagine that! ole Joe's preaching is finally sinkin in!!!! Next thing you know they will use a weiner filter. lol lol lol
survey it all and let god sort it out!
raymcginnis:
Wow, I was right! There are no standards, really. These replies made my head spin. I had to go back to the original question. You are all right. The main thing is to assess every part of your site (facility, soil and groundwater) and then look at who is driving your limits. Then you negotiate with them based on you analysis using RESRAD (usually) to determine limits. Yes, if building license termination is the goal, that is a whole different ballgame, but if there is residual contamination left outside the facility, you may only get the building taken off the license. You'll still have a license for everything else, unless you prove that it is all below your established limits.
We are trying to release our entire 1900 acre site. We are very close to being finished, but we are going to have to go back and do MARSSIM soil samples under every radiological facility that we demolished in order to get to the end.
Shonkatoys:
Marssims,I no longer work for a company that puts out a poor and questionable product. This company has been caught before shipping out "Hot Stuff" Thats where I got my over 1 million DPM 100cm2 from. They have been caught doing this and other items. They however still get contracts. This reminds me of steroids and baseball. Baseball is now checking and putting out punishments. However these punishments are not enough and are laughable. The company I use to work keeps getting caught but, unfortunately nothing is done about it. I am glad you work for a decent company as I do now. But as I said before, unless everything is logged then marssims is a joke. My company now can give you acres of maps in color of contamination in large buildings or gamma spec with specific radionuclides over large tracts of land. This is the best data logger. Yes this may have existed before 2000, However I doubt it was anywhere close to what it is now and surely 1940's geiger muellers can not even compete against it. The question is do the regulators really want to protect the public, The company I worked for never was found out by a regulator to be wrong to my knowledge, but in fact was found out by people who were sent their product.
How many people just assumed they were given a good product and just took it? One wonders!!!! >:(
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