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An Approach to Basic Requirements for Maintaining the Software Applications used in Nuclear Facilities |
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PP: 7-11 |
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doi:10.18576/jrna/050102
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Author(s) |
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Mazhar Mahmoud Hefnawi,
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Abstract |
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| In nowadays the software applications of computers systems in nuclear facilities have expanded. These applications became very important and very necessary for operating the existing systems and upgrading current systems. Although the characteristics of software applications used with nuclear facilities have a high degree of similarity with software applications used in industrial control systems, specifications are different with both of them in terms of architecture and function. Therefore in order to increase the degree of safety in nuclear facilities and sites of nuclear facilities, basic requirements for maintaining the software applications must be determined and implemented. This paper introduces an approach in describing and implementing these requirements in all stages of lifecycle process in computer system used in nuclear facilities. These stages are stage while designing the computer system, stage before installing software applications, stage while operating software applications, and stage after shutting down software applications. These requirements include security risk assessments of software applications, the activities and considerations necessary for assessments during the system design phase or component design and equipment supply phase are presented in the following 6 steps: 1) System Identification, 2) Asset and Impact Analysis, 3)Threat Analysis, 4) Vulnerability Analysis, 5) Security Control Design, and 6) Penetration test. The results from this approach to a nuclear facilities protection system are described.
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