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Health and Safety at Work Act etc. 1974

Ionising Radiations Regulations 1999
Certificate of Approval No TA2 of 1999 (revised)

1 By virtue of the powers conferred on it by paragraph 1(c) of Schedule 1 to the Ionising Radiations Regulations 1999 ('the Regulations'), the Health and Safety Executive approves the type of apparatus specified in Schedule 1 to this Certificate, subject to the conditions specified in Schedule 2.

2 Schedule 3 defines the terms used.

3 This Certificate shall remain in force until it is revoked in writing by the Health and Safety Executive.

4 This Certificate replaces Certificate of Approval No TA2 of 1999 dated 22nd day of December 1999 which is hereby revoked.

Signed by

Wendy Bines
(A person duly authorised by the Health and Safety Executive to act in that behalf)

Dated this 9th day of May 2000.


Schedule 1

1 Self-luminous fire safety signs or other devices in which the only radioactive substance is one or more gaseous tritium light sources.

Schedule 2

1 This type approval shall only apply to signs specified in Schedule 1 if those signs have been shown to conform to all of the minimum requirements for such signs specified in Schedule 1 of the Health and Safety (Safety Signs and Signals) Regulations 1996 (SI 1996/341).

2 The gaseous tritium light sources inside the sign or device shall not be directly accessible.

3 The dose rate at 0.1m from any accessible surface shall be less than 1 µSv per hour.

4 This type approval only applies to signs or other devices described which are installed in premises or a workplace or which are supplied to such premises or workplace for installation.

Schedule 3

1 In this Certificate 'gaseous tritium light source' means a sealed glass container filled with gaseous tritium and coated internally with a phosphor.

2 In this Certificate 'device' in relation to gaseous tritium light sources' means an instrument, piece of equipment, article or sub-assembly containing one or more such sources and so constructed as to withstand normal use without breaking.


Explanatory notes for certificate of approval No TA2 of 1999 (revised)

1 These notes do not form part of the Certificate of Approval.

2 Apparatus specified in the Certificate is type approved for the purposes of Schedule 1 to the Regulations. This means that employers who have such apparatus installed in their premises but carry out no other work with ionising radiations need not notify the Health and Safety Executive, and need not consult a radiation protection adviser.

3 The approval does not exempt employers from all other requirements of the Regulations.

4 This approval does not relate to the functional ability of the apparatus.

5 This Certificate concerns self-luminous fire safety signs or other devices containing one or more gaseous tritium light sources and provided with mechanical protection to prevent direct access to the source(s).

6 This Certificate does not extend to self-luminous fire safety signs or other devices kept in any premises or workplace for purposes other than the installation of the sign or device in those premises or workplace. For example, bulk storage of signs or devices for wholesale or retail is not be exempted by this Certificate.

7 This certificate replaces the Certificate of Approval TA2 of 1999 which is revoked.

8 In the case of apparatus installed on offshore installations (premises referred to in Article 4 of the Health and Safety at Work etc Act 1974 (Application outside Great Britain) Order 1989) a separate Certificate of Approval has been issued on behalf of the Secretary of State for Trade and Industry.

Updated 2008-12-05