What are the steps of lightning protection and grounding detection? Can you explain it briefly?

Before lightning protection grounding detection, it is necessary to know the allowable grounding resistance of the detected building, such as the allowable grounding resistance of the electronic information room should be less than 4 ohms, and the grounding resistance of the gas station should be less than or equal to 10 ohms. For specific detection steps, please refer to the relevant requirements in Technical Specification for Detection of Lightning Protection Devices in Buildings. Testing requirements are as follows: