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

Before lightning protection grounding detection, you must first understand the allowable grounding resistance value of the building being inspected. For example, the allowable grounding value of the electronic information room should be less than 4 ohms, and the grounding resistance value of the gas station should be less than or equal to 10 ohms. For specific testing steps, please refer to the relevant requirements of the "Technical Specifications for Testing of Lightning Protection Devices in Buildings". The testing requirements are as follows: