What is the difference between the safety protection distance and the health protection distance?

Health protection distance: refers to the minimum distance from the boundary of the department (workshop or production unit) that generates harmful factors to the boundary of the residential area. The safety distance is calculated starting from the boundary of the production facility or workshop where harmful factors are generated, up to the minimum allowable distance from the boundaries of residential areas, ports, docks, stations, or major traffic routes. The health protection distance is generally determined from the perspective of protecting humans, and this term is commonly used in environmental impact assessments. The safety protection distance is a professional term introduced by safety authorities; it is generally established with the aim of protecting production workers (such as the safety distance between hazardous equipment and workers), public facilities, and human beings. General safety assessments discuss safety protection distances.

This post was last edited by ylb913 on 2015-9-26 at 22:23. “Hygienic Protection Distance for Petrochemical Enterprises” SH3093-1999: 1.0.1 This standard is formulated to prevent air pollutants released unintentionally by petrochemical enterprises from contaminating residential areas and causing harm, as well as to protect human health. Appendix A Glossary of Terms A.0.1 Health protection distance refers to the minimum distance from the boundaries of production facilities that emit air pollutants in an unorganized manner, as well as waste treatment facilities, to the boundaries of residential areas under normal operating conditions. An exact definition for the safety protection distance has not been found. However, the petrochemical industry focuses mainly on the effects of fires and explosions. This includes the impact of fires and explosions on residents and on other devices, as well as the impact of fire sources in residential areas on those devices.

I have another question: what is the relationship between the safety protection distance and the fire separation distance?

I also pray for this issue. Experts from various fields came to inspect it, each giving their own opinion, leaving everyone confused.

What was said on the second floor is absolutely correct； General safety assessments are based on the safety protection distance ； Environmental assessment is carried out in accordance with the health protection distance

The fire separation distance seems to refer to various production units； Distance from roads in flammable and explosive areas ； Fire separation distance in the control room ； It seems to be 20–50 meters ； I can’t remember where I saw it

\"Hygienic Protection Distance for Petrochemical Enterprises\" SH3093-1999: 1.0.1 To prevent air pollutants released in an unorganized manner by petrochemical enterprises from contaminating and harming residential areas and to protect human health, A.0.1 Hygienic protection distance refers to the minimum distance between the boundaries of production facilities that emit air pollutants in an unorganized manner, as well as waste treatment facilities, under normal operating conditions, and the boundaries of residential areas. An exact definition for the safety protection distance has not been found. However, the petrochemical industry focuses mainly on the effects of fires and explosions. This includes the impact of fires and explosions on residents and on other devices, as well as the impact of fire sources in residential areas on those devices. Comments

The safety distance generally refers to the fire separation distance.

Here is another document related to safety protection distances; it represents, aside from the fire separation distances and those safety distances I mentioned earlier, the only available guideline for external protection distances to date: Announcement No. 13 [2014] issued by the State Administration of Work Safety, titled \"Personal Acceptable Risk Levels and Societal Acceptable Risk Levels for Chemical Production and Storage Facilities (Trial Version)\". This document is not easy to understand; the main text is short while the appendices are long. The main text describes the second method in Appendix 2, which requires the use of specialized software for calculation. The first and third methods in Appendix 2 are relatively practical

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