GB/T 14778-2008General rules of coloured light for safety (English PDF)

Foreword

This document conforms to GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

Drafting is scheduled.

This document replaces GB/T 14778-2008 "General Rules for Safe Colors and Light". Compared with GB/T 14778-2008, the main differences are structural adjustments and...

Aside from editorial changes, the main technical changes are as follows.

--Added a reference to "Safety Colors and Safety Symbols" (see Chapter 5).

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed and is under the jurisdiction of the Ministry of Emergency Management of the People's Republic of China.

This document was first published in 1993, revised for the first time in 2008, and this is the second revision.

General Rules for Safe Colored Light

1 Scope

This document specifies the indications and application scenarios for safe color light, the range of color areas, and the requirements for the use of safe color light.

This document applies to safe colored light used by production and business units and public places.

This document does not apply to colored light used in aviation, maritime, or inland waterway transportation, nor to reflected light.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are listed below.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB 2894 Safety Colors and Safety Signs GB/T 5698 Color Terminology

3 Terms and Definitions

The terms and definitions defined in GB/T 5698 and the following terms and definitions apply to this document.

Colored light

Visible light produces the sensation of brightness and color in the human visual system.

Note. Includes steady-state light and flashes.

Colored light for safety Colored light that conveys safety information.

Note. Includes four colors of light. red, yellow, green, and blue. White light is an auxiliary color.

4 Safety color indications and usage scenarios

5 Color range

Safety colored lights should be clearly identifiable within the designed distance and should comply with the requirements of GB 2894.Appendix A provides the color values of safety colored lights.

Color area range, color boundary, and color coordinates of the intersection of color areas.

6 Requirements for the use of safe colored light

When using safe colored light, the brightness of the surrounding environment and its relationship with other colors should be considered, and the safe colored light should be clearly visible. Precautions should be taken when using it.