GB/T 32936-2016Methods of assessing lightning protection within explosion (English PDF)

3.1 Evaluation unit division

Should be based on the explosion of dangerous places where the explosion of the characteristics of the explosion, the location of the explosion and dangerous places after the explosion will cause it

The explosion of his facility is divided into multiple evaluation units by the following requirements.

- an electrical, electronic equipment suffered lightning, causing malfunctions may lead to secondary explosive accident, divided into an evaluation unit;

--- Lightning hit an explosion hazard object explosion may cause other isolated units occur when the explosion, divided into an evaluation list

For the concept of martyrdom, see Appendix A;

--- use of pipes, channel segments connected together equipment (or tank), should be divided into a unit.

The evaluation unit is shown in Table 1, and the evaluation unit is shown in Appendix B.

Table 1 List of evaluation units

Schematic explanation

Equipment 1 in the event of lightning strikes, will cause the device 2 occurred martyrdom, at this time two

The equipment should be classified as an evaluation unit

Equipment 1 and equipment 2 through a certain path to connect each other to transfer explosive substances or energy

Quantity, when the equipment 1 explosion occurred after the explosion, the explosive energy will be delivered to the device 2, and

So that the occurrence of blasting accident, this time the two equipment should be classified as an evaluation unit

Equipment 1 and equipment 2 of the explosion risk is through a certain electrical, electronic system control

System, then electrical, electronic system after lightning failure, may lead to equipment 1

Or equipment 2 explosion risk can not control, then the two devices and control system

The building of the building shall be classified as an evaluation unit […]