Washington Boiler and Pressure Vessel Inspector License

The Boiler and Pressure Vessel Inspector License allows you to inspect boilers and pressure vessels that are:

Currently in service
Located at a facility but physically disconnected from the energy input and system
No longer at a facility
Scrapped

How to Get the Boiler and Pressure Vessel Inspector License in Washington?

In the state of Washington, all Boiler and Pressure vessel inspectors must have a "work card" issued by L&I. The applicant must meet the following steps to qualify for a work card.

Fill out and submit an Application for Certificate of Competency as an Inspector of Pressure Retaining Items
- Note that the application must be received 30 days before the examination date
Take and pass the National Board and the Washington State boiler examination
- For further information regarding the test administered by the NBBI, please refer to the Body of Knowledge, or contact the board directly at This email address is being protected from spambots. You need JavaScript enabled to view it. or by phone at 614-888-8320
- Boiler Inspector exams are provided by request. For further information regarding exam scheduling or information on the exam, please reach out to the Boiler Program's Administrative Assistant Jamie Brown, Secretary Supervisor, at 360-902-5271 or at This email address is being protected from spambots. You need JavaScript enabled to view it.
Submit the corresponding examination fee
Expect a response from the department in regards to the license

Washington Boiler and Pressure Vessel Inspector License Exam Prep Course

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Washington Boiler and Pressure Vessel Inspector License Exam

Below is all the information related to the trade exam, including the official reference list.

Washington Boiler and Pressure Vessel Inspector Trade Exam

Testing Method: Computer-based testing
Number of Questions: 85
Types of Questions: Multiple choice
Time Allowed: 420 Minutes
Minimum Passing Score: 60 Questions
Subjects Involved:
- Inservice Inspection
  - Familiarity with the requirements for the inservice inspection of pressure-retaining items, as outlined in National Board Inspection Code, Part 2, Inspection, including a knowledge of internal/external inspection requirements, safety and confined space entry requirements, and deterioration
- Boiler and Pressure Vessel Types and Terminology
  - Ability to identify boiler and pressure vessel types and their corresponding parts
- Conditions Causing Deterioration or Failures
  - Ability to identify and understand the effects of operations on pressure-retaining items, including:
    - Types of Corrosion and Deterioration:
      
      Corrosion by water
      
      Corrosion by process fluids
      
      Deterioration due to hydrogen
      
      Stress corrosion cracking
      
      Atmospheric corrosion and corrosion under installation
      
      Erosion and erosion-corrosion
      
      Other types of corrosion
    - Failure Mechanisms:
      
      Mechanical and thermal problems
      
      High temperature problems
    - Corrosion Calculations:
      
      Corrosion rate determination
      
      Corrosion averaging
      
      Widely scattered pitting
      
      Surfaces remote from a weld
      
      Corrosion in central portion of dished heads
      
      Estimated remaining life and corrosion rate
- Installation
  - Ability to identify and understand the general requirements for installation of pressure-retaining items including requirements for:
    - Steam/hot water heating boilers
    - Hot water supply boilers
    - Potable water heaters
    - Pressure vessels
    - Piping
    - Power/heating boilers
      
      Equipment requirements
      
      Source requirements
      
      Discharge requirements
      
      Operating systems
      
      Controls and gages
      
      Pressure relief valves
- Code Calculations
  - Ability to perform calculations, as they apply to re-ratings and remaining life. For example:
    - Components under internal pressure:
      
      Calculation of minimum required thickness or maximum allowable working pressure (MAWP) of items such as tubing, piping, drums, shells, headers, and heads
    - Static head calculations:
      
      Difference between vessel MAWP and vessel component MAWP
      
      Static head pressure on any vessel component
      
      Total pressure (MAWP + static head) on any vessel component
    - Remaining life and inspection interval calculations:
      
      Calculation of metal loss (including corrosion averaging), corrosion rates, remaining service life, and inspection interval
- Nondestructive Examination
  - Ability to define and understand the requirements and guidelines for performing examinations and tests for the installation and inspection of pressure-retaining items; ability to define and understand the principles of the following nondestructive examination methods:
    - Radiography
    - Ultrasonic testing
    - Magnetic particle testing
    - Liquid penetrant testing
    - Visual testing
- Pressure Testing
  - Ability to define and understand the requirements and guidelines for performing examinations and tests for the installation and inspection of pressure-retaining items; ability to define and understand the different pressure testing methods and principles, such as:
    - Liquid pressure test
    - Pneumatic test
    - Initial service leak test
    - Vacuum test
- Pressure Relief Devices
  - Ability to define and understand set pressure and relieving capacity requirements for pressurerelieving devices, including:
    - Application and limitations
    - Sizing for pressure and capacity
    - Set pressures and allowable deviations
    - Causes of improper performance
    - Reasons for inspection and frequency determination
    - Inspection and test service procedures
    - Maintenance inspection safety practices
- Controls and Safety Devices
  - Ability to define and understand controls and devices, including:
    - Fuel
    - Waterside
    - Fireside
    - Limit switches and device types
    - Level indicators

Washington Boiler and Pressure Vessel Inspector Book Set

This set of books includes all required references for the Boiler and Pressure Vessel Inspector exam. Orders placed before 2 PM are shipped the same day via UPS and a tracking number is emailed before 3 PM.

WASHINGTON BOILER AND PRESSURE VESSEL INSPECTOR - BOOK SET WITHOUT TABS INCLUDES ALL BOOKS FOR TRADE AND BUSINESS EXAMS

Sales price: $3,991.83
WASHINGTON BOILER AND PRESSURE VESSEL INSPECTOR - BOOK SET WITH TABS INCLUDES ALL BOOKS FOR TRADE AND BUSINESS EXAMS

Sales price: $4,061.83