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Triple Bar Existing Sites (TBES)
The Triple Bar Existing Sites (TBES) is a ‘three bar’ training course delivered online or via classroom which has been designed with industry involvement for you to complete before you start work on a nuclear licensed site.
Course Overview

The TBES introduces you to the requirements for compliance, nuclear awareness and industry behaviours for safe working in the nuclear industry.  The TBES plays a fundamental part in making everyone in the nuclear industry aware of the impact that their actions have and role they have to help ensure we have, maintain and grow a UK nuclear industry for safe and continued operations.


The TBES course comprises of three 'bars':

Bar One: Working in the nuclear industry
In the first bar you will be provided with a basic knowledge of the nuclear industry and what is important to know if you are working in it.
Bar Two: Going on site
In the second bar you will learn about some of the special arrangements you need to be aware of when you are working on a nuclear site such as strict security measures, emergency procedures and delivering the quality expected on a nuclear licensed site.
Bar Three: Safety on a nuclear site

In the final bar you will find out how you need to put safety into practice when you are working on a nuclear licenced site. Including

*  Behaving safely and recognising safe and unsafe conditions.
*  Knowing the traits of a healthy safety culture and understanding common types of errors people make and the tools we use to avoid them.

Who should complete it?

This course is ideal for anyone starting or transitioning into working on an existing nuclear site.

The TBES is available online and via classroom delivery.

On Line:  register onto the  Nuclear Training Network

Classroom: available through NSAN providers.  The classroom option requires 1 day to complete.  For more information on the providers search for Triple Bar Existing Sites on our Course Search facility


Online £130 +VAT.  Employees of member companies receive 50% discount. To request the discount code click here

Classroom based course prices vary between providers.  Please contact the provider direct for pricing information.

This course is perfect for new entrants including apprentices, graduates and those transitioning from other sectors to gain a foundation level of understanding into the sector as they start their career. 

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“The course was interesting and helped me revisit a lot of areas I have been familiar with having worked in the nuclear industry for 19 years. Very good course for a new starter unfamiliar with nuclear and also a good refresher for someone like myself.”  
A recent course participant

Looking for a qualification?

The Award for Nuclear Industry Awareness is a level 2 course that has been designed to meet the needs of apprentices and all other personnel new to the nuclear sector, who need to gain a foundation level of understanding of the nuclear sector.  You can try a taster for free on the Nuclear Industry Training Network, NSAN's online e-Learning portal.  While you are there have a look at the other nuclear industry courses on offer by NSAN and our members.

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Are you not working on an existing site?

There are a number of Triple Bar courses that have been designed for different sub sectors of nuclear.  If you are working on a new build site, in manufacturing or would like to know more about Nuclear Security, there is a Triple Bar for you.  there is also a Triple Bar course that focuses on Leadership for new managers.


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