≡ Menu

By Carlos F Molina

In the Body Of Knowledge for the API 653 exam, Ultrasonic Testing is one of the smallest parts that needs to be studied. This is what the Body Of Knowledge says you need to get:

E. Article 23, Ultrasonic Standards, Section SE–797 only – Standard practice for measuring thickness by manual ultrasonic pulse-echo contact method:
The inspector should be familiar with and understand;
1. The Scope of Article 23, Section SE-797,
2. The general rules for applying and using the Ultrasonic method
3. The specific procedures for Ultrasonic thickness measurement as contained in paragraph 7.

Keep reading

{ 1 comment }

By Carlos F Molina

Here I present the resources in my website: the Q&A documents and a simulator.

Please download 47 more Q&a in the Api 653  series.

HOW TO USE THE Q&A LISTS

The questions of the Q&A list were extracted from the standards by me, or remembered by me or other students that took the exam before. The format is a Q&A one, different from the multiple choice question format from other courses I have seen online. I prefer this method because it takes away all the clutter that leads to confusion when treating these standards. I advise you to copy these questions (maybe you will have to actively copy and paste the Q&A sets in word or excel) and paste it in a spaced repetition software like Anki or Supermemo, as the Q&A format allows, and start studying right away.  Please edit the questions yourself looking to the references if you have difficulty remembering any of them. When days pass by, you will see who you remember all of the information with no problem.

Keep reading

{ 0 comments }

By Carlos F Molina

This is my last article about radiology in tanks for readers who are studying for the API 653 exam. We will see

  • Radiographic Technique
  • Placement of IQIs
  • Radiographic density

Keep reading

{ 0 comments }

By Carlos F Molina

In this article we will be talking more on the subject of radiology in the ASME V code

NOTE: This article is half of what originally was intended to be. It turns out that, as usual, good research takes a lot of time and as consequence, articles end up being longer and not reader-friendly.  So I trimmed out the info and I am resizing with the info needed by API 653 readers.

There is 1 characteristic of a good radiograph that you should control:

Keep reading

{ 1 comment }

ASME V Radiology part 2

By Carlos F Molina

I am pleased to be back with you for this article. We are reviewing basic radiology for the 653 exam according to ASME V. This is following the radiology first article of this series

Hey. If you know apiexam.com, maybe you have realized that I try to make my articles following the exact order of the Body Of Knowledge. Did you notice then that something was lacking from the latter article? Yes… it was procedure demonstration. Keep reading

{ 0 comments }

ASME V Radiology Introduction

By Carlos Molina

This time we are going to check radiographic testing for welds in new tanks, an introduction. The BOK for the API 653 exam says:

2. Radiographic Examination:

The inspector should be familiar with and understand:

1. The Scope of Article 2 and general requirements [of ASME V].

2. The rules for radiography as typically applied on butt welded AST horizontal and vertical seams such as, but not limited to:

required marking type.

selection.

number, and placement of IQIs.

allowable density control of backscatter radiation

location markers

3. Records

I will try to simplify this subject as much as posible for the people who is studying for the API 653 exam. Keep reading

{ 3 comments }

By Carlos F Molina

Today´s artice is about hydrostatic testing in tanks. In my workplace, it became a common ocurrence for the people to say that “the hydrostatic test in a tank is just a tightness test”. Some gals say that “the most important thing to do with hydrostatic testing is settlement measurement”. This illustrates that not everybody understands hydrostatic testing fully.

In this article, we will see how the hydrostatic test is made for various types of tanks and which parts of a tank are evaluated with an hydrostatic test. Keep reading

{ 4 comments }

By Carlos F Molina

To professionals all around the industry, I am here to present you a problem. We have  shortage of personnel for our industry. The average age of a welder in the USA is 55; the wave of coming retirements will leave manufacturers at a disadvantage. The American Welding Society estimates that by 2020 there will be a shortage of 290,000 professionals, including inspectors, engineers, and teachers. “We’re dealing with a lost generation”, they say (link)

Keep reading

{ 2 comments }

By Carlos F Molina

Hi. This is the final installment of these series of articles containing the 27 variables that a SMAW WPS should contain (other proccesses have different essential variables). Here we will consider variables 19 to 27 that should be given a value in a WPS, according to ASME IX. This is written for the basic level, for the person that is studying for the API 653 exam. Keep reading

{ 0 comments }

The variables on a WPS (Part 2)

By Carlos F Molina

Hi again. I hope you have found my last post useful. Here is the continuation of it: variables 13 to 18 that should be given a value in a WPS, according to ASME IX.

QW-405. POSITIONS

wps smaw positions

13. QW-405.1 The addition of other welding positions than those already qualified. see QW-120, QW-130, QW-203, and Qw-303.

A common mistake made by beginners is to think that the position chosen for procedure qualification limits the position of the production weld. In fact, qualifying a procedure in any welding position approves all positions providing no impact tests are required. Weld position is a non-essential variable.

Keep reading

{ 0 comments }