Instrumentation engineering root cause analysis (RCA) of instrument Steam Pressure Taps Primary Block Valves (PBV) Glands and Bonnets too soon leaks and this delays the commissioning of a plant.
Article Type: | Root Cause Analysis (RCA) |
Category: | Instrumentation |
Equipment Type: | Transmitters |
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.
Steam taps’ Primary Block Valves (PBV) glands and bonnets within a month or even sooner leaks problem need an immediate solution:
Q- Why even reputed vendors’ correct rated ¾” weld end steam instrument Tap PBVs’ (fig 1) Bonnet and Gland leaks; but not those of the far below taps located three-way manifold valves
Flashed Answer – Only cold condensate wets those of the latter, but a steam condensate mixture of those of the former.
Few days thinking flashed solution from the above RCA
Few days thinking flashed solution from the above RCA was; shift the at taps valves 200 mm below pipe CL. Now cold condensate only would wet their gland packing and bonnet gaskets; maybe these would last forever as the manifold valves.
A plant section allowed a short shutdown (SD) for trial. The trial was a great success.
RCA Solution Benefits are
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:
The conveyor sorting machine is widely used in the packing industries using the PLC program…
Learn the example of flip-flop PLC program for lamps application using the ladder logic to…
In this article, you will learn the STAR DELTA programming using PLC controller to start…
Lube oil consoles of rotary equipment packages in industrial process plants are usually equipped with…
Rotating equipment packages such as pumps, compressors, turbines need the lube oil consoles for their…
This article explains how to blink lights in ladder logic with a detailed explanation video…