Cause of Fire in Rotary Drilling Rigs
1. Fuel System Oil Leaks
- Loose or broken connections in the fuel system can lead to oil leaks.
- Poor quality or cracked oil pipes, and congenital pinholes, can all result in fires.
2. Equipment Self-Ignition
- Aging electrical systems, chaotic wiring, and issues like short-circuiting or poor connections can increase current or resistance, leading to high temperatures and fires.
3. Electrical System Fires
- Short circuits in electrical wiring can start fires.
- Loose or poorly connected wires can create sparks and fires due to contact resistance.
- Overloaded electrical circuits can also cause fires.
4. Flammable and Explosive Materials
- Equipment containing flammable materials like ether, gasoline, or paint thinners can quickly ignite and spread fire.
5. Mechanical or Parts Failures
- Loose fuel tanks or broken fixing straps can cause oil leaks that ignite.
- Insufficiently inflated tires on wheeled rigs can cause friction fires.
6. Welding and Cutting
- Sparks from cutting or welding operations can ignite accumulated grease, cloths, or other flammable materials on the chassis.
7. Human Factors
- Deliberate arson due to unpaid wages, construction disputes, or criminal activities can lead to fires.
Preventive Measures for Fire in Rotary Drilling Rigs
1. Keep Away from Open Flames
- Minimize cutting and welding on the main machine. If unavoidable, take preventive measures like laying cover plates and having firefighting equipment on hand.
2. Machine Maintenance
- Regularly inspect equipment, including electrical systems, and avoid bypassing fuses or creating short circuits. Replace aging electrical components and wiring as needed.
3. Fire Awareness
- Avoid storing flammable materials on the machine. Equip the rig with fire extinguishers and regularly clean accumulated grease and trash.
4. Supervision During Downtime
- Ensure personnel are present to monitor the machine when it’s not in use.
Emergency Measures for Fire in Rotary Drilling Rigs
- If no fire extinguisher is available, use a mud pump or site soil to extinguish the fire and control its spread.
Solutions After a Fire Incident
- Depending on the damage, consult the rig manufacturer for repairs or consider dismantling or selling the rig.
Summary: Fire incidents in rotary drilling rigs can cause severe economic loss and threaten personal safety. Operators should always be vigilant, use the rig correctly, and take preventive measures to avoid fire accidents.
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