Systems segregation
Systems segregation
(OP)
Hi, I'm new on this forum and am wondering if someone could help me out with a fairly straightforward multiple choice question that I recently came across:
From an aircraft safety perspective, what would improving systems segregation achieve?
better maintenance access?
enhanced systems integrity?
longer component life?
an optimum system installation?
Thanks for your assistance!
From an aircraft safety perspective, what would improving systems segregation achieve?
better maintenance access?
enhanced systems integrity?
longer component life?
an optimum system installation?
Thanks for your assistance!





RE: Systems segregation
Once you consent to some concession,
you can never cancel it and put
things back the way they are.
---Howard Hughes---
RE: Systems segregation
I vote for "none of the above".
Imagine:
System A is a safety-critical system. System B is not safety-critical.
If system A and system B are are segregated, then:
A failure of system A results in something bad happening.
A failure of system B does not.
If A and B are not segregated then:
A failure of system A results in something bad happening.
A failure of system B may casue a cascade failure of system A.
You need information regarding the reliability of the systems and access to the FMECA to correctly answer the question.
RE: Systems segregation
Not entirely so.
A DC-10 has 2 segregated hydraulic systems. (Dual Systems)
An improved segregated system would be one where the 2 systems were physically separated a significant distance, so 1 penetration of the area by a sharp object didn't disable both systems. (Sioux City, Iowa)
RE: Systems segregation
My background is the hydrocarbon processing industries such as offshore oil and gas, refining and petrochemical manufacturing. We want a balance. We segregate the shutdown system from regulatory process control. We implement triplicated or quad shutdown processors and multiple sensors and controls to increase operation on-time. A simplex or redundant voting shutdown system may be more safe; to shutdown the process on-deman. The triple or quad systems balance to protect from bad sensors, etc. that cause annecessary trips.
John