5901 23RD DR W ZAP ENERGY 2025-08-04

_"qv� W- ZAP ENERGY ZRD-SPL-001 2.2 Source Assumptions for Dose Estimation The source is modeled as an isotropic line source of 2.5-MeV neutrons. The line starts from(0,0,0) and ends at (0, 0, 20) in the laboratory coordinate. A simplified FUZE-Q device is modeled in the simulation to investigate the dose contribution from prompt gammas generated from neutron interactions with matter. A cross-sectional view of the FUZE-Q machine is shown in Figure 7. FuZE—Q o , Source location Figure 7.The cross-sectional view of the FuZE-Q model. Zap estimates that the neutron production will be no more than 2 x 1014 neutrons in one year, which can be achieved by firing 2,000 plasma shots with a yield of 1011 neutrons per shot, or any other equivalent combination of yields and number of plasma shots. 2.3 Effect of Shielding 2.3.1 Dose Distribution without shielding When there is no additional shielding present, the annual doses at the controlled areas and unrestricted areas with the source assumption specified in the Section 1.4 are listed in Table 2, and the two-dimensional dose map is shown in Figure 8. For the highly occupied areas, such as the Control Room, HV Lab and Suite 100 office areas to the South of the machine, as well as the machine shop and Suite 101 office areas to the West of the machine, there is a need to reduce the annual unshielded dose by a factor of 1.5 to 4.3 to meet Zap Energy's dose limit. Additionally, in accordance with the principles of ALARA,Zap intends to reduce the dose to the unrestricted areas outside the building to the North and East of the FuZE-Q device. Zap Energy Inc. Proprietary Information 10