GB/T 44624-2024Ergonomics of the thermal environment - Methods for the assessment of human responses to contact with surfaces (English PDF)

National Standard of the People's Republic of China

ICS

13.180

Classification

A 25

Issued by: State Administration for Market Regulation, China National Standardization Administration

Contents

• Preface
• 1 Scope
• 2 Normative references
• 3 Terms and Definitions
• 4 Methods for evaluating human responses to contact with moderately hot surfaces
• 4.1 Parameters affecting contact thermal sensation
• 4.2 Prediction of thermal sensation
• 5 Methods for evaluating human responses to contact with hot surfaces
• 5.1 Critical burn temperature
• 5.2 Burn risk assessment
• 5.3 Protective measures
• 5.4 Surface temperature limit setting
• 6 Methods for assessing human responses to contact with cold surfaces
• 6.1 Frostbite risk assessment
• 6.2 Critical temperature data
• 6.3 Risk Assessment
• 6.4 Principles for establishing surface temperature limits
• 6.5 Guidelines for risk reduction measures
• Appendix A (Informative) Scientific Background
• Appendix B (Informative) Contact Time
• Appendix C (Informative) Application Procedure for the Method of Evaluating Human Response to Contact with Hot Surfaces
• Appendix D (Informative) Thermodynamic Properties of Materials
• Appendix E (Informative) Case 40 of protective measures to prevent burns
• E.1 Protective measures to prevent burns
• E.2 Protective measures example
• Appendix F (Informative) Burn Hazard Assessment Case
• F.1 Object
• F.2 Bottom plate
• F.3 Handle
• F.4 Middle area
• Appendix G (Informative) Example of setting surface temperature limit values
• G.1 Example 1.Iron surface temperature limit
• G.2 Example 2.Surface temperature limit of heating pad
• Appendix H (Informative) Safety signs for hot surfaces
• H.1 General Information
• H.2 Warning signs
• H.3 Other signs to prevent burns caused by hot surfaces
• Appendix I (Informative) Thermal properties of some materials
• Appendix J (Informative) Scientific Basis
• J.1 General principles
• J.2 Database
• J.3 Models based on experimental data
• Appendix K (Informative) Application Extension
• K.1 A wide range of people
• K.2 Other materials
• K.3 Surface coatings and structural textures
• K.4 Liquids and other substances
• Appendix L (Informative) Frostbite Assessment Example
• L.1 Question
• L.2 Step
• L.3 Example
• Appendix M (Informative) Protective measures when contacting cold surfaces
• References