Unvented Hot Water Storage Systems
Who is it for?
If you are an engineer who needs to meet the requirements of the Building Regulations Approved Document G (section G3), this scheme is for you. The regulations require that a hot water storage vessel with a capacity of more than 15 litres, which does not incorporate a vent pipe to atmosphere, should be installed, commissioned, inspected and serviced by a competent person. The unvented hot water identity card that is issued is recognised by Building Regulations Approved Document G (section G3) and accepted by Local Building Control as evidence of competence.
This scheme covers the inspection, installation, commissioning and servicing of unvented hot water storage units and packages. This includes the electrical supply arrangements for direct heating, i.e. immersion heaters and the component requirements for indirect heating.
There are three modules:back to top
This is a pre-requisite for other modules, but may be taken as a stand-alone if you wish to complete inspect only work, e.g. building inspectors. This consists of written and practical inspection assessments:
- inspect closed book multiple choice (no reference material permitted)
- inspect open book multiple choice (approved reference material permitted)
- discharge pipework and safety control inspections.
If you commission UHWSS, this assessment assists in satisfying the competence requirements of Building Regulations Approved Document G (section G3). It consists of the following practical assessment:
- commissioning an unvented appliance with external/internal expansion vessel.
Install and service
If you install and service UHWSS, this assessment will assist in satisfying the competence requirements of Building Regulations Approved Document G (section G3). It consists of written and practical assessments:
- service open book multiple choice (approved reference material permitted)
- service an unvented appliance with external expansion vessel
- install practical pipework including testing.
How to get a certificate/card
All cards are valid for five years. You will be notified by Cskills Awards six months prior to the expiry of any categories.
The scheme is split into three categories:
If you have a background in plumbing, heating and ventilation and/or gas and wish to install, commission and service UHWSS.
If you have a relevant allied trade background, such as electrical, and wish to inspect and commission only UHWSS.
If you have no formal relevant trade qualifications or experience, such as; building inspectors; designers/architects; site supervisors and manufacturers’ technical staff, but as part of your duties you are required to carry out inspections of UHWSS.
Successful completion of assessments in categories 1 and 2 will assist you in satisfying the competence requirements of Building Regulations Approved Document G3. Successful completion of category 3 assessment is for inspection only and does not entitle you to install, commission or service UHWSS.
Expiry dates have been introduced to ensure your registration is accepted by Competent Persons Scheme Operators and Building Control, now and in the future.
If your UHWSS registration was prior to 31 July 2002, your registration will have expired 31 July 2008. If your UHWSS registration was between 1 August 2002 and 31 March 2007, add six years to your initial registration date. This will be your expiry date. From 1 April 2007 individuals registered on the current scheme will expire after five years.
Why have one?
Being qualified and working with UHWSS you:
- can provide evidence of holding an UHWSS qualification
- meet the requirements of the Building Regulations Approved Document G3
- can show employers/clients your ConstructionSkills UHWSS card which is a handy way for anyone seeking to clarify your qualifications whilst on-site.
Information for existing UHWSS operatives
It is good practice to keep abreast of new developments within the industry. Training and assessment should be considered especially if there has been an extended period of time since last working on UHWSS.
Further information about this scheme is available in the scheme information.
To find an approved centre in your region take a look at Water training and assessment.
For further information, contact your customer co-ordinator.
Another source of information is the Department for Communities and Local Government