**I. Management Regulations**
According to the Q/GDW 168-2008 "Power Transmission and Transformation Equipment Condition Inspection and Maintenance Test Regulations," the professional inspection cycle is set to once every six months. This schedule ensures that all critical equipment is regularly monitored for performance, safety, and reliability. Proper adherence to these regulations helps in identifying potential issues early, reducing downtime, and maintaining the integrity of the power system.
**II. Inspection Items and Standards**
1. **Inspection of SF6 Closed Combined Electrical Equipment (GIS)**
The inspection should be conducted according to the items and standards outlined in Table 3-6-5. These include checking for gas pressure, insulation resistance, and visual signs of damage or leakage.
2. **SF6 Circuit Breaker Inspection**
Follow the procedures and standards listed in Table 3-6-6. This includes checking the SF6 gas level, mechanical operation, and electrical continuity.
3. **Oil Circuit Breaker Inspection**
Refer to Table 3-6-7 for the required inspection items and standards. This involves checking oil levels, insulation resistance, and mechanical functionality.
4. **Vacuum Circuit Breaker Inspection**
Conduct inspections based on the guidelines provided in Table 3-6-8. Key areas include vacuum interrupter condition, contact resistance, and operational testing.
5. **High-Voltage Switchgear Equipment Inspection**
Inspect according to the items and standards specified in Table 3-6-9. This includes checking for proper alignment, insulation, and overall structural integrity.
6. **Hydraulic Operating Mechanism Inspection**
Follow the requirements detailed in Table 3-6-10. This includes checking hydraulic fluid levels, pressure, and mechanical movement.
7. **Patrol Inspection of the Yellow Body**
Perform inspections as per Table 3-6-11. This typically involves checking for physical damage, corrosion, and proper labeling.
8. **Inspection of Electromagnetic Operating Mechanism**
Use the guidelines from Table 3-6-12. This includes checking coil resistance, magnetic field strength, and mechanical response.
9. **Pneumatic Inspection**
Conduct this inspection following the items and standards in Table 3-6-13. It includes checking air pressure, valve operation, and system leaks.
**III. Inspection Methods and Precautions**
(1) Always carry a patrol record book and follow the designated inspection route to ensure no equipment is missed.
(2) Before starting, familiarize yourself with the equipment load distribution and current health status to perform more targeted checks.
(3) Wear a safety helmet when entering production areas to maintain personal protection and meet safety standards.
(4) During the inspection, practice the “four fine†approach: look carefully, listen closely, sniff for unusual odors, and touch only non-heated parts. Strictly follow the inspection checklist to avoid missing any defects.
(5) Report any detected defects or abnormalities immediately, classify them, and document them thoroughly in the appropriate logbook. Notify the relevant department and dispatch center as needed.
(6) If any serious threats to personnel or equipment safety are identified during the inspection, handle them according to the established accident response procedures.
(7) Carry necessary testing tools such as an infrared imager, multimeter, telescope, portable oxygen meter, and SF6 gas leak detector to ensure accurate and efficient inspections.
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