Explaining the fundamental concepts behind each recommendation made by API 687 - Special-purpose Rotating Equipment Repairs .

API 687 does a wonderful job issuing recommendations to follow when performing turbomachinery repairs.

In this website, I go page by page chapter by chapter explaining the fundamental concepts and reasons for each recommendation.

API suggests WHAT to do, I explain WHY.

Why we use displacement probes: Wobulator Experiment

OG Wobulator (TK-3) by Bently Nevada On my last post I wrote about why and how we use displacement probes or proximity probes to monitor...

Fernando E. Romero, P.E.

Oct 41 min read

Why we use displacement probes in rotating equipment and why we care about AC/DC voltages.

I have been thinking about this for months now, and I finally had time to sit at my desk this morning and type it out. Why do we...

Fernando E. Romero, P.E.

Sep 274 min read

How I make illustrations for the blog!

I have been using MS PowerPoint for 38 years. (I'm not sure if this tragic or something to be proud of) I use it to make Scalable Vector...

Fernando E. Romero, P.E.

Aug 301 min read

What is RUNOUT (Part 2)

Today I am going to show you what it looks like to record runouts with an indicator on a real shaft. Today I measured something really small in my garage! I am going to use it to illustrate how to measure mechanical runouts.

Fernando E. Romero, P.E.

Jul 55 min read