Shots 2, h, and 6 respectively.
Table 4.5 compares averaged. residual percentages of panels
grouped into usage and surface characteristics.
Table ,.6 lists residual gamma percentages of washdown
protected panels compared to unprotected panels exposed to Shot 2.
Figure 4.2 is an illustration of initial gamma contamination
versus panel slope. Initial contamination levels of all panels of
the same slope were averaged for each shot. These averages were
compared with the average intensity level of horizontal panels, and
the corresponding ratios were plotted against panel angle.
Figure 4.3, h.k, and 4.5 represent graphically the initial
gamma intensities and residual percentages of panels for Shots 2, h, ~
and 6 respectively.
.
Appendix B summarizes the data obtained from beta readings,
These results were not used becausethey were felt to be misleading.
Further discussion on this point is contained in Chapter 5,
These charts and graphs, in a few cases, indicate higher |
activity levels after decontamination than before. This is attribute
able to instrument error, decay correction error, and changes in ©
instrument geometry due to redistribution of contaminant.
In all
cases, however, the actual deviation is less than instrument tolerance
error alone.
25
CONFIDENTIAL — RESTRICTED DATA