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Lock-out and Tag Procedures

Lock-out and Tag Procedures. Presented By: Paul Micheal Hall District 3 – Morgantown Robert Phillips Headquarters - Arlington. Purpose of Lock-Out and Tag. Personal Safety Prevent Undue Exposure to Energized Circuits Reduce Electrical Fatalities and Accidents.

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Lock-out and Tag Procedures

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  1. Lock-out and Tag Procedures • Presented By: • Paul Micheal Hall • District 3 – Morgantown • Robert Phillips • Headquarters - Arlington

  2. Purpose of Lock-Out and Tag • Personal Safety • Prevent Undue Exposure to Energized Circuits • Reduce Electrical Fatalities and Accidents

  3. Year Total Electrical 1970 – 1999 2946 229 2000 38 2 2001 42 2 2002 27 4 2003 29 4 2004 8 1 Total 3090 242 Coal Fatals - Total & Electrical

  4. Average = 90.6 Electrical = 7.1 [7.8%] (For 1970 to 2003 and Based on 3082 fatalities; 241 electrical) Coal Fatals - Total & Electrical

  5. Next to a nuclear reaction, an electrical arc is the hottest thing on earth, being seven times the temperature at the sun’s surface. Electricity can cause shock, burns, ignitions, explosions and even electrocution. Be Wise! Stay Alive! Always Deenergize! Electricity

  6. Circuits that must be Locked-Out and Tagged • Electrical • Hydraulic • Pneumatic • Mechanical • Thermal

  7. Who must Lock-Out and TagWhen Performing Electrical Work • All person(s) doing electrical work on the circuit

  8. Trouble Shooting Procedure For Equipment and Circuits • Energized Circuit and Equipment • Low- and Medium-Voltage Only • Only to determine the problem • Lock- and Tag- out to perform electrical work

  9. EFFECTSOF CURRENT ON THE AVERAGE BODY

  10. Current Effects • How much current does it take to illuminate a 60 watt, 120 volt light bulb? • The answer is 0.5 amperes or 500 milliamps. • This is over five times the current that it takes to electrocute someone.

  11. CURRENT EFFECT 1 MILLIAMP THRESHOLD OF PERCEPTION • 1 TO 8 MILLIAMPS SENSATION OF SHOCK • 8 TO 15 MILLIAMPS PAINFUL SHOCK • 15 TO 20 MILLIAMPS LOSS OF MUSCULAR CONTROL

  12. 20 TO 50 MILLIAMPS BREATHING IS DIFFICULT • 100 TO 200 MILLIAMPS VENTRICULAR FIBRILLATION (NO KNOWN REMEDY) • OVER 200 MILLIAMPS SEVERE BURNS

  13. Why People Do Not Lock- & Tag-Out • Takes too long! • Too far to travel to remove power! • Will only take a minute! • I’ll do it hot! • I know what I’m doing! • Have seen others do it or have done it themselves!

  14. 3 22 9 1 18 4 2 56 28 1 76 5 3 1 ELECTRICAL FATALITIES BY STATE 1970 - 2003 3 3 6

  15. Percentage of Electrical Fatalities by Location

  16. American Eagle Mine     4605437 02/18/2000           AGE 44 EMPLOYEE ENTERED SUBSTATION TO DETERMINE WHAT WORK WILL BE REQUIRED TO REMOVE THE TRANSFORMER. HE CLIMBED THE TRANSFORMER TO LOOK AT TOP WHEN HE CAME IN CONTACT WITH LINE.

  17. PE 2 Underground          1518008            04/30/2000       AGE 26   A CERTIFIED ELECTRICIAN WAS GOING TO MAKE REPAIRS ON THE RIGHT SIDE POWER CENTER IN THE NO. 5 ENTRY, AND WAS FOUND LYING BESIDE THE POWER CENTER. IT APPEARS HE RECEIVED A FATAL ELECTRICAL SHOCK

  18. Still Run No. 4   4608726 03/13/2001    AGE 44 AFTER INSTALLATION OF A BANK OF CAPACITORS ON THE HIGH VOLTAGE LINES FEEDING THE MINE SUBSTATION, EE (ACCORDING TO WITNESSES) UNPLUGGED THE 110 V CONTROL CIRCUIT FROM THE RECEPTACLE, THREW IT TO THE GROUND, PICKED IT BACK UP TO INSPECT & AT THIS TIME CAME IN CONTACT WITH ELECTRICAL CURRENT.

  19. #77       1509636   07/20/2001 AGE 26   EE WAS FATALLY ELECTROCUTED AS HE DISASSEMBLED A CONVEYOR BELT STARTING BOX SOURCE OF POWER CAUSING DEATH IN UNKNOWN AT THAT TIME.

  20. Mine No. 5        4406051 01/24/2002   AGE 42 SECTION POWER MOVE HAD BEEN MADE. WORK BEING DONE TO CONNECT THE PHASING. EMPLOYEE APPROXIMATELY 2 CROSSCUTS FROM POWER CENTER STATED HE HEARD A STRANGE SOUND FROM THE AREA OF THE POWER CENTER AND WENT TO THE POWER CENTER AND FOUND THE DECEASED SLUMPED OVER THE POWER CENTER.

  21. Mine 84 3600958 05/11/2002   AGE 46 EE WAS OPERATING A STAMLER COAL HAULER AND HAD ATTEMPTED TO TRAM AROUND AN UN CUT CORNER. IN DOING SO HIS HAULER APPARENTLY PINCHED THE ENEGIZED LOADER CABLE BETWEEN THE HAULER AND THE COAL RI B. EE EXITED THE MACHINE TO LOOK AT THE DAMAGE TO THE CABLE AND WAS APPARENTLY ELECTROCUTED WHEN HE CONTACTED THE FRAME OF THE COAL HAULER.

  22. Huff Creek No 1 1517234 05/21/2002   AGE 50 EMPLOYEE WAS WORKING ON A POWER DISTRIBUTION BOX TO DETERMINE WHY A CIRCUIT BREAKER WOULD NOT OPERATE. HE APPARENTLY CAME IN CONTACT WITH AN ENERGIZED CIRCUIT DURING THE TROUBLE SHOOTING PROCESS.

  23. Calvary No. 80   1516349 05/23/2002   AGE 58 THE ELECTRICIAN WAS WORKING ON A GROUNDED SHUTTLE CAR CABLE AND RECEIVED FLASH BURNS WHEN A SHORT CIRCUIT OCCURED AT THE FEMALE RECEPTACLE ON THE ELECTRICAL POWER CENTER.

  24. Mine No. 4        4407052 01/21/2003   AGE 33 THE VICTIM WAS ELECTROCUTED NEAR THE FACE OF NO. 8 ENTRY OF THE 001-0 MMU WHILE INSTALLING SUPPLEMENTAL ROOF SUPPORTS. WHEN ANOTHER WORKER FINISHED CUTTING A STEEL BEAM WITH A TORCH, AN ENERGIZ ED TRAILING CABLE WAS DAMAGED CAUSING THE BEAM & TRAILER ON WHICH IT RESTED TO BECOME ENERGIZED. THE VICTIM THEN CAME IN CONTACT WITH THE TRAILER, RESULTING IN ELECTROCUTION.

  25. No. 50 Mine       4608776 03/23/2003    AGE 49 BREAKER BLEW UP AND BURNED EMPLOYEE.

  26. Beaver Valley    3608725 06/13/2003    AGE 41 WHILE TROUBLE SHOOTING MAIN OUTSIDE SUBSTATION, EMPLOYEE CAME IN CONTACT WITH HIGH VOLTAGE RESULTING IN DEATH.

  27. Upper Big Branch Mine-South     4608436 07/19/2003       AGE  27 EMPLOYEE WAS IN THE PROCESS OF REPAIRING #3 SHUTTLE CAR CABLE. POWER TO CABLE HAD BEEN TAGGED & LOCKED OUT. HE WAS DISCOVERED LYING ON HIS BACK & NOT BREATHING. CPR WAS ADMINISTERED AND HE WAS TRANSPORTED TO THE HOSPITAL WHERE HE WAS PRONOUNCED DEAD AT APPROX. 8:20 P.M. MSHA/STATE INVESTIGATIONS ARE INCONCLUSIVE AT THIS TIME.

  28. Ruby Energy     4608808 02/05/2004  AGE 33 ELECTRICIAN WAS FATALLY ELECTROCUTED WHILE REPAIRING A MINER CABLE. THE CABLE WAS NOT LOCKED AND TAGGED OUT BY THE ELECTRICIAN.

  29. Regulations requiring Disconnecting Devices? • 30 CFR 75.509 • "All power circuits and electric equipment shall be de-energized before work is done on such circuits and equipment, except when trouble shooting or testing".

  30. 75.509 Policy states, • PPM states in part, …"a violation of this Section shall be cited only when electrical work is being performed on an energized machine.... Troubleshooting or testing does not include the repair of electrical, hydraulic, or mechanical problems".

  31. 75.511 • No electrical work shall be performed on low-, medium-, or high-voltage distribution circuits or equipment, except by a qualified person or a person trained to perform electrical work and to maintain electrical equipment under the direct supervision of a qualified person....

  32. 75.511 cont. • Disconnecting devices shall be locked out and suitably tagged by such persons. Locks or tags shall be removed only by the persons who installed them or, if such persons are unavailable, by persons authorized by the operator or his agent.

  33. 75.511 Policy states, • "For the purpose of this Section, electrical work is considered to be work required to install or maintain electric equipment or conductors..... The phrase "under the direct supervision of a qualified person" must, as a minimum, include the following:

  34. 75.511 PPM cont. • 1. The qualified person shall examine and/or test an electric circuit or machine and determine the need for repair or maintenance; • 2. The qualified person must give specific instructions to the employee assigned to perform this work with respect to the nature and extent of the repairs to be performed and, where necessary, prescribe the manner in which the work is to be performed;

  35. 75.511 PPM cont. • 3. The qualified person is, at all times, under continuing duty to instruct, advise, or consult with the employee in the event the work which he has assigned cannot be performed by the employee in the manner prescribed; and • 4. The qualified person must examine and test, if necessary, the completed work before the circuit is energized or the machine is returned to service.

  36. 75.511 PPM cont. • Disconnecting devices shall be locked out, where possible, and suitably tagged by persons who perform the work. In all instances, trailing cables equipped with cable couplers or fuse nips shall be opened, tagged and locked out. • The person doing the work shall keep the key to the padlock in his/her possession to insure that the circuit or cable will not be inadvertently energized while he or she is in contact with the conductors.

  37. 75.511 PPM cont. • In every instance, the padlock shall be removed by the person who installed it if the person is present in the mine. If the person who installed the padlock is not present, the operator or the operator's agent (a responsible official) must designate a person to remove the padlock. • "Suitably tagged" means that a sign with the wording such as "Danger, Repairs in Progress," shall be attached to the locked disconnecting device.

  38. Disconnecting Devices Installed On-Board Mine Equipment • When disconnecting devices are installed on-board mine equipment, they may be used to meet the requirements of 30 CFR 75.509, 75.511 and 75.1725 (c)....

  39. Disconnect PPM cont. • To meet the requirements of 30 CFR 75.509, 75.511 and 75.1725 (c), disconnecting devices must function so as to provide positive visual conformation that the equipment or circuit is deenergized. The worker must be able to easily see the power disconnect blades or contacts to determine, without any doubt, that the equipment or circuit is deenergized and...

  40. Disconnect PPM cont. • To meet the requirements of 30 CFR 75.520, disconnecting device enclosures must be explosion-proof..... In addition, the enclosure housing the disconnecting device must be the first enclosure on-board the machine that the trailing cable enters....

  41. Disconnect PPM cont. • Permitting a disconnecting device installed on-board a machine to be used as the visual disconnect for the equipment creates a change in established electrical work procedures. As a result, all miners who perform maintenance on this equipment must receive task training as required by 30 CFR 48.7 (a) (3). This training must include clear instructions that the disconnecting device will only deenergize the machine, and that the trailing cable will remain energized.

  42. 75.519 • In all main power circuits, disconnecting switches shall be installed within 500 feet of the bottoms of shafts and boreholes through which main power circuits enter the underground area of the mine and within 500 feet of all other places where main power circuits enter the underground area of the mine.

  43. 75.519-1 Policy, Main Power Circuit; Disconnecting Switches; Locations • This Section applies to low- and medium-voltage power circuits entering a mine and to low-, medium-, and high-voltage power circuits at the bottom of shafts and boreholes. The requirements for disconnecting switches for high-voltage power circuits entering a mine are contained in Section 75.802 (c).

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