Architecting the safety assessment of large-scale systems integration
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Authors
Yin, Tong Choon
Subjects
Systems Integration
System Safety
System-of-Systems Safety
System Safety
System-of-Systems Safety
Advisors
Paulo, Eugene
Date of Issue
2009-12
Date
Publisher
Monterey, CA; Naval Postgraduate School
Language
Abstract
This research identifies the information/data required to perform a safety assessment for large-scale systems integration. From these required safety-related information/data, and the utilization of system engineering processes and practices, a safety assessment architecture is developed. As a result, the risk of known hazards is mitigated to as low as reasonably practical (ALARP) and the system health of these large-scale system integrations is improved throughout the system's life cycle. The thesis first identifies the current gap in system safety assessment for large-scale system integrations, especially in the area of Commercial of the Shelf (COTS) and Non-Developmental Item (NDI) systems integration. Next, with reference to the DoD system life cycle process, a COTS/NDI system integration life cycle process model is proposed. In addition, in line with the DoD policy to have a joint weapon system safety review board, a system safety functional hierarchy is then created. Using the functional hierarchy created, more detailed sub-functions and measures of effectiveness for system safety assessment are then analyzed. Finally, a hazard list table is proposed as a tool to be used in relation to the system safety assessment functional hierarchy so as to achieve the objective to identify, mitigate, trace and accept all residual risks associated with the large-scale system integration throughout its life cycle. A case example of the Harpoon Weapon System (HWS) safety assessment on a ship platform is used to further explain the usage and process of generating, maintaining and tracking the hazard list table.
Type
Thesis
Description
Series/Report No
Identifiers
NPS Report Number
Sponsors
Funder
Format
xx, 53 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.