Four Corners Mine. Lockout Procedures. 15 Dragline

Transcription

1 Four Corners Mine Lockout Procedures BE 15 Dragline Revision Log Rev. No. Requested By Approved By Revised By Rev. Date 0 Initial Issue FCO Mine Safety B. Marceaux Committee 1 Electrical Department Electrical Department B. Marceaux _dl_lockout_manual-2.doc Page 1 of 13

2 PURPOSE FOR S: AC Blower Motor Change Out Dragline bucket and ropes NO N/A Under Voltage YES Lock and Tag Main MG Set High Voltage YES Lock and Tag Local Breaker at MCC YES Lock and Tag Place bucket on ground, release tension on ropes Knockout MG sets at Open Under Voltage Breaker and, Open Main MG Set HV Disconnects and apply Lock and Tag, Open Local Breaker and 240vAC Back Control Room Transformer Room (Underneath) Visual, Three phase Disconnect open Local. Close local Breaker AC Blower Motor Close Main MG Set HV Disconnects Line Voltage Close Under Voltage Breaker Control power to start MG sets Start MG sets at local Start Stop station MG sets running, Mechanics 15_dl_lockout_manual-2.doc Page 2 of 13

3 (LOCK REQUIRED / Oiler/Operator, Electrician) PURPOSE FOR S: Adding Oil to Bearings on MG Sets Dragline bucket and ropes NO N/A Thyristor YES Lock and Tag Under Voltage YES Lock and Tag Main MG Set High Voltage YES Lock and Tag Place bucket on ground, release tension on ropes Knockout MG sets at Open Thyristor Breaker and Open Under Voltage Breaker and, Open Main MG Set HV Disconnects and apply Lock and Tag, 240vAC Under Rear Machine Visual, Three phase Disconnect open Close Main MG Set HV Disconnects Close Under Voltage Breaker Control power to start MG sets Close Thyristor Breaker Power to transformers Start MG sets at local Start Stop station MG sets running Operators, Oilers, Dragline Mechanics, all Oiler/Operator, Electricians 15_dl_lockout_manual-2.doc Page 3 of 13

4 PURPOSE FOR S: Dragline Collector Ring Work Dragline bucket, shoes and ropes NO N/A from Sub to Dragline YES Birdie Back Feed YES Lock and Tag Place bucket and shoes on ground, release tension on ropes Knockout MG sets at Open Feeder Breaker, Pull Jacks at Sub, hang birdie, s Open Back Feed Isolation Disconnect and apply Lock and Tag, Done by Electricians Sub Visual at Jacks Under Rear Machine. Expandable Hot Stick Required Remove Lock and Tag from Back Feed N/A Isolation Disconnect Close Back Feed Isolation Disconnect on Line Voltage Dragline Remove Birdie, close jacks at Sub to Dragline 15_dl_lockout_manual-2.doc Page 4 of 13

5 PURPOSE FOR S: Hoist, Drag and Swing DC Motor Change Out x Electrical Mechanical Chemical Dragline bucket and ropes NO N/A Under Voltage YES Lock and Tag MG Set High Voltage YES Lock and Tag AC Blower motors YES Lock and Tag Place bucket on ground or secure swing brake with chain, release tension on ropes Knockout MG Sets at Open Under Voltage Breaker and, Open Main MG Set HV Disconnect and apply Lock and Tag, Open House Exciter Excitation Breaker, (HSEB) and, Open AC Blower Motor Breaker and apply Lock and Tag 240v AC N/A Visual 240vAC Under Rear Machine Upstairs Control Room Visual, 3 phase disconnect open Grey box with outside handle Local. 15_dl_lockout_manual-2.doc Page 5 of 13

6 Close AC Blower Motor Breaker AC Blower Motor Close House Exciter Excitation Breaker, HSEB Breaker Close Main MG Set HV Disconnect Close Under Voltage Breaker Start MG Sets at local Start Stop Station Check Rotation House Exciter 4160v power to MG Set starters, Done by Electrician Control power to start MG Sets MG Sets DC Motor 15_dl_lockout_manual-2.doc Page 6 of 13

7 (LOCK REQUIRED / ELECTRICIANS, MECHANICS) PURPOSE FOR S: Drag Cable Change Out by Mechanics X Electrical X Mechanical Chemical Thermal X Pneumatic Hydraulic X Stored energy in cable, drag drum Dragline bucket and ropes NO N/A Under Voltage YES Lock and Tag Main MG Set High Voltage YES Lock and Tag Drag Cable Drum YES Lock and Tag (in order) Place bucket on ground, release tension on ropes Knockout MG Sets at Open Under Voltage Breaker and, Open Main MG Set HV Disconnect and apply Lock and Tag, Close Brake Supply Valve and or Post Attendant 240vAC Air Under Rear Machine Drag Cable Drum Visual, Three Phase Disconnect open Visual, Valves closed Open Brake Supply Valve Drag Cable Drum Close Main MG Set HV Disconnect 4160v power to MG set starters Close Under Voltage Breaker Control power to start MG sets Start machine at local Start Stop station MG sets 15_dl_lockout_manual-2.doc Page 7 of 13

8 Boom Inspection (LOCK REQUIRED / Oiler/Operator) PURPOSE FOR S: Go up Boom for Inspection x Dragline bucket, shoes and ropes NO N/A Thyristor YES Lock and Tag Place bucket and shoes on ground, release tension on ropes Knockout MG Sets at Open Thyristor Breaker and. Close Thyristor Breaker Power to Transformers Start MG Sets at Local Start Stop Station MG Sets running Operators, Oilers, Dragline Mechanics, all Oiler/Operator 15_dl_lockout_manual-2.doc Page 8 of 13

9 Maintenance Work with MG Sets Running PURPOSE FOR S: Maintenance work on Dragline with MG sets running, Dump Rope Work. Due to the nature of bucket and cable work, which may require several moves of the bucket to complete the task, a single employee may be designated to lockout Generator Excitation for the bucket repair crew. The names of each member of the bucket repair crew shall be on this tag. The operator must remain in the operator seat when Generator Excitation is not locked out. If an excitation breaker is opened then a lock and properly labeled tag including all names of crew members shall be applied by a designated employee.. x Electrical Mechanical Chemical Dragline bucket and ropes NO N/A Thyristor YES Lock and Tag Place bucket on ground, release tension on ropes Open Thyristor Breaker and. Close Thyristor Breaker Power to Transformers 15_dl_lockout_manual-2.doc Page 9 of 13

10 PURPOSE FOR S: Power Cable Re-Route, NOT FOR REPAIR DAY See SHP 3160 Electrical Policy for power cable handling guidelines. power from Sub to Dragline YES Birdie Bucket must be in air to remove cable Knockout MG sets at Open Feeder Breaker, Pull Jacks at Sub, hang birdie, s Operator Controls Visual 240vAC Operator Visual Controls Sub Visual, jacks open. Remove Birdie, close jacks at Sub to Dragline 15_dl_lockout_manual-2.doc Page 10 of 13

11 PURPOSE FOR S: Repair Day Dragline bucket, shoes and ropes NO N/A Thyristor YES Lock and Tag Under Voltage YES Lock and Tag Main MG Set High Voltage YES Lock and Tag Place bucket and shoes on ground or secure swing brake with chain, release tension on ropes Knockout MG sets at Open Thyristor Breaker and Open Under Voltage Breaker and, Open Main MG Set HV Disconnects and apply Lock and Tag, 240vAC Machine Room Machine Room Under Rear Machine Visual, Three Phase Disconnect open Close Main MG Set HV Disconnects Line Voltage Close Under Voltage Breaker Control power to start MG sets Close Thyristor Breaker Power to transformers Start MG sets at local Start Stop station MG sets running 15_dl_lockout_manual-2.doc Page 11 of 13

12 PURPOSE FOR S: Dragline Temporary Power Back Feed Protection MG Sets, Operator Controls NO Back Feed YES Lock and Tag 4160v Sub YES Birdie Knock out Control Excitation Knock out MG Sets at Open Feeder Breaker, Pull jacks at Sub, hang birdies, Before plugging in Generator, Open Back Feed Isolation Disconnect and, Done by Electrician Sub Hang Birdie Visual, jacks open. Back Feed Isolation Disconnect Plug in Generator N/A N/A Visual, breaker Disconnect Generator, Close Back Feed to Dragline Isolation Disconnect Pull birdies, set jacks Power Cable must be Disconnected from J Box if Flot Crews are to handle or move Power Cable 15_dl_lockout_manual-2.doc Page 12 of 13

13 (LOCK REQUIRED / Oiler/Operator) PURPOSE FOR S: Work on Auxiliary Equipment such as Air Compressor, Blowers and Fans, Exciter Set Induction Motors, Oil Pumps, Service Winches and Air Conditioners, etc. NOTE: Lockout of the MG Sets or Generator Excitation DOES NOT deenergize any of the above equipment; they must be locked out separately. x Thermal x Pneumatic x Hydraulic x Dragline bucket and ropes NO N/A Thyristor YES Lock and Tag Local Breaker YES Lock and Tag Place bucket on ground, release tension on ropes Knockout MG Sets at Open Thyristor Breaker and Open Local Breaker and 120vAC to Local. Close Local Breaker Auxiliary Equipment Close Thyristor Breaker Power to Transformers Start machine at local Start Stop station Local power Operators, Oilers, Dragline Mechanics, all Mechanic, Electricians, Oiler, Operator 15_dl_lockout_manual-2.doc Page 13 of 13