Power Plant Maintenance Positions Selection System (MASS)

This exam is used to help determine suitable candidates for jobs in nuclear, fossil, and hydroelectric plants.


MASS Study Guide

Test Details

This exam is approximately 1 hour long, and is completed using paper and pencil. Each section of the exam has its own allotted time schedule and number of questions. See below for the specifics of each exam section.
If you require special accommodations, this request must be made directly to the utility company.

Some jobs in these fields for which MASS will test, include:

  • Welder
  • Electrician
  • Painter
  • Steelworker
  • Pipe fitter

What are the specifics of the topics covered?

The following topics and subtopics are covered, as well as the number of questions and time allotted for each.

  • Spatial Ability – You will have 10 minutes to complete 20 multiple-choice questions.
  • Mechanical Concepts – You will have 20 minutes to complete 44 multiple-choice questions.
  • Mathematical Usage – You will have 7 minutes to complete 18 multiple-choice questions.
  • Reading Comprehension – There will be 5 reading passages associated with several multiple-choice questions about each passage. You will have 30 minutes to complete a total of 36 multiple-choice questions.

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Where can I take the exam and how much does it cost?

The exam can be taken at various job sites. If you are taking the exam at the site where the job will occur, it is free. If you take the exam at a school that partners with the company with which you are trying to get a job, the cost is $30.

What should I do the day of the exam?

Bring a valid photo ID. You are not allowed to bring a calculator to the testing area. Additionally, you are prohibited from bringing personal items such as food and drink.

What happens after I take the exam?

The results of all four sections of the exam are combined into an Aptitude Index Score. The Human Resources Department (HR) of the company for which you are applying, will be given the results. HR will let you know if you passed or failed.

What happens if I don’t pass the exam?

Each utility company has its own waiting period for re-taking the test. Consult with the company.

Where can I get more information?

Going into an exam blindly is never a good idea. The hope is that you will pass without having to take it more than once. The best way to do this is to thoroughly prepare yourself. Resources that mimic the real test are going to be the most helpful.

Knowing this, Mometrix has designed a study guide that was created using exam experts who have spent many hours fully researching the content of the exam, just to bring you the best. You can take advantage of all of their hard work by visiting the link below to obtain your very own.

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by Mometrix Test Preparation | This Page Last Updated: September 27, 2022