EVALUATION OF COUNTERMEASURE SYSTEM COMPONENTS AND OPERATIONAL PROCEDURES
Some operational characteristics of a radiological shelter and values for some countermeasures-system parameters were evaluated. The operation consisted of two phases, the first involving measurements made by project personnel in a manned station living the characteristics of a high-performance radiological shelter and the second involving monitoring amd reclanwation operations in an area near the shelter beginning about 1 hr after burst. Measurements were made inside the shelter beginning at shot time to test a simple shelter monitoring system; test a proposed ventilation intake configuration intended to eliminate a requirement for filtration of the shelter air supply; determine thc effective gamma-radiation shielding afforded by an operational shelter, including two different exhaust ventilation configurations and a simple entrance configuration; and determine those radiation and fall-out characteristics needed to evaluate the operational measurements. The second phase involved the test of a key-point initial monitoring technique; the test of two proposed techniques for determining reclamation effectiveness in advance of reclamation operations; the test of the feasibility of achieving a residual number of 0.01 in a cleared area; and the test of a barrier as an alternative to a buffer zone. Data were obtained on two shots (Diablo and Shasta). The shelter, having a minimum earth-cover thickness of 3 ft, provided an average shielding reduction factor of about 10,000. All openings in the eanth cover for ventilation and other purposes were satisfactory from a radiological point of view with the exception of the straight entrance way. The shelter monitoring system provided adequate information. The air-filter data showed no requirement for air filtration at air intake flow rates of 300 to 600 cfm with the intake configuration used. All objectives in the second phase were successfully met with one exception. It was not possible to obtain an adequate test of the feasibility of achieving a residual number of 0.01 in the staging area because of the poor condition of the test area. (auth)
- Research Organization:
- Naval Radiological Defense Lab., San Francisco
- NSA Number:
- NSA-13-020057
- OSTI ID:
- 4206934
- Report Number(s):
- WT-1464
- Resource Relation:
- Other Information: Project 32.3 of OPERATION PLUMBBOB. Orig. Receipt Date: 31-DEC-59
- Country of Publication:
- United States
- Language:
- English
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