Accession Number : AD0506771

Title :   Safety Measurement Concepts for Naval Weapon Systems.

Descriptive Note : Final rept. 29 Aug 66-29 Jan 68,

Corporate Author : RADIO CORP OF AMERICA CAMDEN N J DEFENSE COMMUNICATIONS SYSTEMS DIV

Personal Author(s) : Canale,S.

Report Date : 29 FEB 1968

Pagination or Media Count : 128

Abstract : This report describes methods of safety measurement for Naval Weapon Systems. The method of measurement is based on the quantification of control-variable parameters which are casually related to undesired end-effect consequences or 'accidents'. The measurement methods include probabilistic and weighted factors approaches. The rationale for use, the limitations of the probabilistic approach and the utility of weighted-factors approaches are given. The two basic safety control variables, namely, the human and material, are included in the quantification methods. A phase-state model was developed to describe operational 'phases', and hazard 'states'. These 'states' lend themselves to a safety-index calculation on a per-phase basis, a combination of phases and a total operational phase basis. The input data to the model can be either weighted factor or probability numeries or both. Standards are necessary to develop input data because sufficient empirical data does not exist, and also to achieve the characteristics of repeatibility of results and minimization of evaluator bias or ideology. Computer techniques for calculating the safety index, updating input data, providing sensitivity analysis, and updating safety indices due to any change, were concluded to be necessary because of the complexity level of the problem and the nature of weapons to be evaluated. This study indicates that with refinements to the input data techniques, as applied to the phase-state model, and with advanced computation techniques, the safety measurement technique can be perfected and implemented in the near future. (Author)

Descriptors :   (*GUIDED MISSILE SAFETY, MEASUREMENT), PROBABILITY, STATISTICAL ANALYSIS, HAZARDS, ACCIDENTS, STANDARDS, COMPUTERS, DATA PROCESSING, MATHEMATICAL MODELS, COMPUTER PROGRAMMING, PROCESSING, ENVIRONMENT, SAFETY (U) AIR TO SURFACE MISSILES, SURFACE TO AIR MISSILES, DROP TESTS, GUIDED MISSILE FUZES

Subject Categories : Safety Engineering
      Air- and Space-launched Guided Missiles
      Surface-launched Guided Missiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE