Electrical engineering root cause analysis (RCA) related to 110 KV Minimum Oil Circuit Breakers (MOCB); No Vendor Spares & Service threaten their sudden failure and indefinite outage.
Article Type: | Root Cause Analysis (RCA) |
Category: | Electrical |
Equipment Type: | Circuit Breakers |
Author: | S. Raghava Chari |
Note: This root cause analysis (RCA) is from real-time scenarios that happened in industries during the tenure of two or three decades ago. These articles will help you to improve your troubleshooting skills and knowledge.
The author found the Feeder-A and Feeder B Minimum Oil Circuit Breaker (MOCB) top dome level glasses (LG) missing.
The crew reported the vendor had neither supplied the 4‑years ago ordered LGs and MOCB overhaul services.
Several follow-ups to the vendor lead to no response and went in vain.
He sketched the LG guessing from the remaining LG portions. He talked a laboratory glass parts maker into supplying these agreeing to his 100 Nos. min order though only the plant had two MOCBs only! Fortunately, the glassmaker charged ½ of what the breaker vendor quoted for the two LGs.
He found the Electricity Board using tens of the same make MOCBs. Checking with them, he found they have well-trained MOCB overhaul crews. Finding their MOCBs to having no LGs the author offered them 90 LGs and requested their overhaul help. Their crew finely Overhauled one MOCB at a time.
Author: S. Raghava Chari
Do you face any similar issues? Share with us through the below comments section.
If you liked this article, then please subscribe to our YouTube Channel for Instrumentation, Electrical, PLC, and SCADA video tutorials.
You can also follow us on Facebook and Twitter to receive daily updates.
Read Next:
Learn an example PLC program to control a pump based on level sensors using ladder…
In the PLC timer application for security camera recording, when motion is detected then camera…
In this example, we will learn batch mixing with PLC ladder logic program using timer…
This PLC example on manufacturing line assembly is an intermediate-level PLC program prepared for the…
In this article, you will learn the PLC programming example with pushbutton and motor control…
This article teaches how to convert Boolean logic to PLC programming ladder logic with the…