TEESEDERE FD SeEROM eteNmeee ae pe Cveretion Plan CTS 7.3 No, 1-53 2, Pretection ae Against the primary rediological cffects, distance will provide protection, b. Against the secondary radioactivity hazards from radioactive fissien products, induced radioactivity end unfissioned residue, detection and evoidance provide the best protection, Suitable instruments indicete both the presence and intensity of radioactivity at a given place. Area reconnaissance, the maintenance of contamination situation maps, the posting of areas of hazard, end minimizing the spread of contaminated mterial into uncontaminated areas constitute the active measures for reducing the radiological hazard, c. Personnel within an operational radius of ground zero who are to be facing in the direction of the flesh will be required to weer special gorgles to protect thelr eyes ageinst excessive light, Personnel within the ebcve operatienal radius who are not vrovided geggles will facc, with eyes closed, in the oppesite direction from the flesh, After tem (10) seconds, such personnel may turn ebeut end observe the phenemena, 3. Anticipated Hazard Areas a. Immediately under the bomb burst there will be an area «f intense b. Extending downwind, (and to some extent crosswind end upwind) an air- radioacitivity extending downward and to seme extent crosswind and uowind with gradually decreasing intensity. borne radioactive hazard will exist, Its characteristics will depend on the meterological influences such as wind speed and direction at various altitudes up te the maximum height reached by the cloud, c, Contaminated water in the lagoon adjacent to the shot site may be of conseouence, end will be analyzed by the rediological safety unit ef TG 7.1 immediately after shot time and at ether intervals, d. Unless care is exercised, individuals er cbjects entering contaminated areas may transfer radioactivity to clear areas, e. By means ef instruments, such as Geiger-Mueller counters, ion chambers or phatoclectricmlls it is possible te detect the area of contamination and to measure the intensity of the radieactivity. Radiation intensity will normally be measured end reported in reentgens per hour, Besides those \ G-II~2