OPITO Authorised Gas Tester

Learn to perform OPITO-approved gas testing for confined spaces and hot work, ensuring safe atmospheres and regulatory compliance.

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course duration

2 days

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course location

Rizon HQ

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Course Schedule

First Monday of each month

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entry requirements

No prior requirements

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Course cost

£480 plus OPITO certificate fee of £27.50

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Why take this course?

Testing workplace atmospheres is a critical safety step in high-risk environments such as confined spaces and hot work areas. Without proper testing, workers face the dangers of oxygen depletion, toxic gases, and flammable vapours, all of which can lead to serious incidents. This OPITO-approved course provides the knowledge and hands-on experience needed to perform accurate gas testing, ensure compliance with industry standards, and maintain a safe working environment to protect both people and operations.

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What You Will Learn

Module 1 – Authorised Gas Tester

Confined space criteria and atmospheric hazards
Risk assessment and safe systems of work
Gas detection equipment, calibration and sampling techniques
PPE/RPE requirements and statutory responsibilities
Interpreting and recording gas test results

Module 2 – Gas Testing for Hot Work

Principles and hazards of hot work operations
Flammable gas properties and safe oxygen levels
Detector setup, testing procedures and monitoring requirements

Module 3 – Confined Space Gas Testing

Behaviour and limits of flammable and toxic gases (WEL & LEL)
Sequential gas testing and atmosphere sampling
Continuous monitoring in confined spaces

Module 4 – Gas Monitoring for Hot Work Sites

Roles of Gas Monitor, Fire Watch and Standby Personnel
Monitoring atmospheric conditions during hot work
Equipment checks, communication and documentation

      
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 Trustindex verifies that the original source of the review is Google. Did the 5 day forklift training course and thought it was really good from start to finish. John was a great instructor, explained everything clearly and got the balance between theory and practical spot on.
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 Trustindex verifies that the original source of the review is Google. Iain was supportive and very knowledgeable, his communication on what he wanted me to carry out was good and clear.
  
 
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 Trustindex verifies that the original source of the review is Google. Mark Carter was a fantastic instructor, made everything easy, explained it in good detail, helped me feel at ease at all times. My experience with Rizon training has been nothing but positive.
  
 
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 Trustindex verifies that the original source of the review is Google. Had a training session with a trainer (Ian) and it was a great experience. Very knowledgeable, professional, and explained everything clearly in a way that was easy to understand. The session was engaging and well-structured, and it really helped build my confidence. The trainer created a positive and supportive environment throughout. Would definitely recommend to anyone looking for high-quality training.
  
 
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 Trustindex verifies that the original source of the review is Google. It was very good. A lot useful information. Instructor answers all the answers and was very active course
  
 
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 Trustindex verifies that the original source of the review is Google. Mhe training asssessment, i had a lot of great training/advice from this course. And gained alot more knowledge.

Why this course is important

Scenarios for Use

Gas testing for Oxygen, flammable and toxic gases up to and including working in confined spaces
Gas testing prior to and during hot work
Monitoring confined space atmospheres for safe entry
Performing Safety Watch duties on hazardous work sites
Continuous atmospheric monitoring during ongoing operations

The Risk We Address

The Authorised Gas Tester plays a vital role in preventing accidents caused by hazardous atmospheres. Oxygen depletion, flammable vapours and toxic gases can create life-threatening conditions if not identified and controlled. This course provides delegates with the competence to detect these risks and take immediate, appropriate action to safeguard workers and operations.

Skills and Knowledge Gained

By completing this course, delegates will gain the knowledge and practical skills to safely test and monitor workplace atmospheres in line with OPITO standards. They will understand how to identify hazards, operate gas detection equipment, interpret results and maintain safe working conditions in confined spaces and during hot work. This training ensures participants are fully prepared to carry out their duties confidently, compliantly, and effectively.

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assessment type

Written and Practical Assessment

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Certification gained

Certificates are awarded after successful completion of the course and will be valid for a three year period, after which recertification must take place.

Accredited by

Where does training take place?

Our Training Facility

Our purpose-built training facility in Kintore features six custom-fitted classrooms with IT and presentation equipment, along with state-of-the-art practical training areas for courses such as working at height, confined space entry, and rigging and lifting.

On-Site At Your Workplace

We bring training directly to you by delivering customised courses at your workplace, meaning participants can apply what they’ve learned to their specific working environments, reinforcing key safety measures and learning outcomes. We offer flexibility to suit your schedule, whether it’s back-to-back courses or multi-location training over a series of dates.

Continue your training

Here are some more courses that you may be interested in.

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Ready to get started? Fill out the following form to enquire about one of our spots. If you have any more questions about this or any of our other course, please get in touch.

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01224 392626