1. High-Speed Driving on Slopes

• Risk Data: Driving >5km/h on >15° slopes increases rollover risk by 8x. High-speed turns may derail tracks.

• Safe Practice: Use blade braking downhill; maintain low gear (≤2.3km/h) on complex terrain.

2. Overloading: Risking "Overburden Strain"

• Hazards: Exceeding rated load (e.g., 10m³ bucket limit for 121-ton dozers) causes engine overload, hydraulic leaks, and 300% faster track wear.

• Avoidance: Check manufacturer load specs; use layered pushing for large volumes.

3. Neglecting Daily Checks

Must-Inspect List:
 Hydraulic oil (replace if NAS 8 pollution grade exceeded)
 Track tension (sag ≤50mm)
 Braking system (air pressure 0.8MPa)

Warning: Unchecked hydraulic leaks (e.g., 35MPa oil spray) can cause fires.

4. Blind Zone Operation

• Key Blind Zones:
  ▪ Front blade (2m dead zone)
  ▪ Rear swing radius (4.8m warning area)
  ▪ Inadequate night lighting

• Safety Steps: Use 360° cameras; sound horns for personnel entry.

5. Illegal Blade Hoisting

• Damage Risk: Vertical hoisting (vs. designed horizontal thrust) bends boom cylinders (vertical load ≤1/5 horizontal rating).

• Solution: Use cranes for lifting; reserve blades for pushing/leveling.

6. Unlicensed Operation

• Skill Gaps: Untrained operators misjudge tail swing radius (e.g., 4.86m models) 60% of the time, risking collisions.

• Compliance: Require operation certificates and ROPS system training.

7. Faulty Operation

• Immediate Actions:
   Hydraulic temp >80℃: Stop & check cooler
   Track noise: Inspect wear (max 3mm)

• Prohibition: Running with black smoke may cause cylinder scoring (¥10k+ repairs).

Safety Pneumonic

"Check, slow, no hoist; certify, stop, clear" – Daily checks, reduced speed, licensed operation, fault shutdowns, and site clearance extend equipment life by 40% and cut accidents by 75%.