— them. Nw into this so that the bottles can be loaded on a conveyor belt and they ws They are inside shields and it has automatic sample changer built will be counted in succession with no intervention by human hands. _ The initial count for the cesium wil] be 300 minutes and we'll talk about this a little bit later. It's a bit more complicated than this. We éan get about four 300-minute counts in per day and with two detectors, we can have eight samples counted per day. The spectra from the detectors are dumpedfrom the.detector into the computer and the computer does a spectral analysis, peak_.Stripping. It will strip off the cesium-137 peaks and also 10 the peaks from whatever other natural occurring radionuclides that are in il the sample. l2 counted. 13 off, something may be amiss. _It will give something extra to check. 14 results come to the desk of the laboratory project officer and he reviews 15 these results and an added fattor is folded in. 16 into account the density of the soi] samples in our gamma analyses. 17 widely varying densities of soil, which f am led to believe we expect here, 18 this can have an effect on cesium-137 by as much as 10%. 19 only a factor of a few percent. 20 will correct for the density and this wil] beincorporated at this point. 21 This-will give some cross-checks on how well this is being Potassium-40 has. a particular value and, if it's a factor of 10 The We do not normally take For Normally it's At any rate, we have an algorithm which Once the results are finalized for the cesium, a letter is written and 22 sent to DRI with the results. 23 an added complication. 24 twice on accounting statistics error, for the totat-activity in the core. 25 That folds in the top segment, the middle segments, and the bottom segment. 26 Now, the way the activity is distributed, most of it's in the top segment. 27 Very little, 28 cesium in the top segment, 300 minutes will probably give you 3-4% counting Now, normally this would be al] but there is The agreement is that we would like less than 5%, if any, is in the bottom segment. 159 Now when you count the