National Signal Technology, Inc.

Providing Quality Signal Engineering Service Since 1991

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Signal Engineering

Mainline Railroad

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Highway Crossings

As Installed Drawings

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As the complexity of signal systems has grown over the past 40 years, the need for a complete and thorough evaluation of system safety has also increased. NST has been performing safety system assurance studies for major transit properties for the past seventeen years. We have completed all the necessary analysis and planning including, but not limited to, the following:

System Safety Assurance Plans

Preliminary Hazard Analysis

System and Subsystem Hazard Analysis

Fault Tree Analysis

FMECA

Software System Hazard Analysis

Operating System Hazard Analysis

Interface Hazard Analysis

If you require an analysis at the system or product level, our staff will be able to complete a portion of the complete study. Our approach is quite pragmatic. Our goal is to provide a thorough analysis while minimizing your total cost. We will utilize as much of your existing documentation as possible. We will work closely with you, and perhaps even your customer, to define assurance requirements, and those activities that truly will provide a meaningful program.