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Safety Manual
JAC Safety Manual - Chapter 13: Lockout/Tagout Policy

CHAPTER 13:

LOCKOUT/TAGOUT POLICY

A. Policy

    This standard establishes minimum safety requirements for JAC to protect personnel from events that may be caused by the unexpected energizing or start up of machines or equipment, or release of stored energy during service, repair, maintenance, operation, and associated activities. This will be accomplished by locking out and tagging out energy isolating devices, and otherwise disabling machines or equipment to prevent unexpected energizing, start-up or release of stored energy. Separate measures may need to be taken to prevent damage to equipment. The use of this procedure is mandatory.

    This policy does not apply to the following:

  1. Work on cord and plug connected electric equipment for which exposure to the hazards of unexpected energizing or start up of the equipment is controlled by the unplugging of the equipment from the energy source and by the plug being under the exclusive control of the employee performing maintenance or repair.

  2. Work involving electric utilities (HELCO) where the voltages are 600 Volts or greater.

B. References

    U.S. Department of Labor, OSHA regulations, 29 CFR 1910.147, "Control of hazardous energy sources (lockout/tagout)" standard.

    ZEE Medical, Inc., " Lockout/Tagout Compliance Manual", Irvine, CA 92714.

C. Definitions

  1. Affected Employee: An employee whose job requires him/her to operate or use a machine or equipment on which maintenance or repair is being performed under this lockout/tagout policy, or whose job requires him/her to work in an area in which such maintenance or repair is being performed.

  2. Authorized Individual: A knowledgeable individual to whom the supervisor has given the authority and responsibility to lock or implement a lockout/tagout procedure on machines or equipment to perform maintenance or repair. An authorized individual and an affected employee may be the same person when the affected employee's duties also include performing maintenance or repair of a machine or equipment which must be locked and tagged out.

  3. Knowledgeable Individual: An individual who is qualified to operate the controls or equipment and is familiar with the effects of operation.

  4. "Capable of being locked out". An energy isolating device will be considered to be capable of being locked out if it has any of the following:
    1. it is designed with a hasp or other attachment or integral part to which, or through which, a lock can be affixed,
    2. it has a locking mechanism built into it, or
    3. if a lockout can be achieved without the need to dismantle, rebuild, or replace the energy isolating device or permanently alter its energy control capability.
      4.  
  5. Energy Isolating Device: A mechanical device that physically prevents the transmission or release of energy, including, but not limited to, the following: a manually operated electrical circuit breaker, a disconnect switch, a manually operated switch, a slide gate, a slip blind, spectacle flange, a line valve, blocks, and similar devices with a visible indication of the position of the device. (Push buttons, selector switches, and other control-circuit type devices are not energy isolating devices.)

  6. Energy Source: Any electrical, mechanical, hydraulic, pneumatic, chemical, thermal, or other energy source that could cause injury to personnel.

  7. Lockout Device: A device that utilizes a lock and key to hold an energy isolating device in the safe position and prevents a machine or equipment from being energized.

  8. PLD (Personal Lockout Device):  At JAC this is normally a keyed padlock.

  9. Tagout Device: A prominent warning device, such as a tag, that can be securely attached to equipment or machinery for the purpose of warning personnel not to operate an energy isolating device and identifying the applier or authority who has control of the procedure.

  10. Lockout/Tagout: The placement of a lock and tag on the energy isolating device in accordance with an established procedure, indicating that the energy isolating device shall not be operated until removal of the lock/tag in accordance with an established procedure. (The term "lockout/tagout" requires the combination of a lockout device and a tagout device.)

  11. Maintenance and Repair: Workplace activities such as constructing, installing, setting up, adjusting, inspecting, modifying, and maintaining machines or equipment. These activities include but are not limited to lubrication, cleaning or unjamming of machines or equipment and making adjustments or tool changes, where the employee may be exposed to the unexpected start-up of the equipment or release of hazardous energy.

  12. Shall: The word "shall" always implies a mandatory requirement.

D. Responsibilities

  1. Supervisor
    1. Maintains awareness of all aspects of the JAC lockout/tagout policy.
    2. Ensures that all employees under their supervision understand the requirements for compliance with this policy and are made aware of the lockout/tagout procedures and locations for appropriate locks/tags.
    3. Conducts periodic inspection of work sites to ensure compliance with lockout/tagout procedures.
    4. Shall develop, document and utilize procedures.

      5.
  2. Employee
    1. Maintains awareness of all aspects of the lockout/tagout policy and complies with all procedures.

      2.
  3. Safety Advisor
    1. Provides necessary employee training for lockout/tagout procedures.
    2. Conducts periodic inspections of work sites to ensure compliance with lockout/tagout procedures.
    3. Provides guidance regarding the applicability of the lockout/tagout policy.

E. General

  1. Lockout/Tagout
    1. Implementation of lockout/tagout shall be performed only by authorized employees.

    2. Before any employee performs any maintenance or repair of a machine or equipment where unexpected start up or release of stored energy could occur and cause injury, the machine or equipment shall be isolated, and rendered inoperative.
      3.  
    3. If an energy isolating device is capable of being locked out, then this policy requires that a lockout and tagout be utilized. If an energy isolating device is not capable of being locked out, then a tagout shall be utilized.

    4. Whenever major replacement, repair, renovation or modification of machines or equipment is performed, and whenever new machines or equipment are installed, energy isolating devices for such machines or equipment shall be designed to accept a lockout device.
      5.  
  2. Energy Control Procedure
    1. The supervisor shall develop, document and utilize procedures to control potentially hazardous energy when employees are engaged in the activities covered by this policy. Exceptions to this requirement are listed in Appendix 1. It shall be noted that most maintenance and repairs at JAC will be covered by one or more of these exceptions.
      2.  
    2. The procedures shall clearly and specifically outline the scope, purpose, authorization, rules, and techniques to be utilized for the control of hazardous energy, and the means to enforce compliance including, but not limited to the following:
      • A specific statement of the intended use of the procedure;
      • Specific procedural steps for shutting down, isolating, blocking and securing machines or equipment to control hazardous energy;
      • Specific procedural steps for the placement, removal and transfer of lockout devices or tagout devices and the responsibility for them; and
      • Specific requirements for testing a machine or equipment to determine and verify the effectiveness of lockout devices, tagout devices, and other energy control measures.
        •  
  3. Protective Materials and Hardware
    1. Lockout and tagout devices shall be provided by JAC and shall be the only authorized device(s) used for lockout/tagout of energy devices and shall not be used for other purposes. Personal lockout devices (PLD) are to be stamped with the employees name and home phone number. Each employee will be issued keys for their PLD and no one else shall have duplicate keys.
      2.  
    2. Tagout devices, including their means of attachment, shall be substantial enough to prevent inadvertent or accidental removal. Attachment means shall be a one-piece, nylon cable tie which shall be non-reusable, self- locking and non-releasable with a minimum unlocking strength of no less than 50 pounds.
      3.  
  4. Periodic Inspections
    1. The Safety Advisor or his designate will conduct a periodic inspection of the energy control procedure at least annually to ensure that the procedures and the requirements of this policy are being followed.
      2.  
    2. The periodic inspections shall be performed by an authorized employee other than the one(s) utilizing the energy control procedure being inspected. The inspections shall be designed to correct any deviations or inadequacies observed.
      3.  
    3. Where lockout is used for energy control, the periodic inspection shall include a review, between the inspector and each authorized employee, of that employee's responsibilities under the energy control procedure being inspected.
      4.  
    4. The inspector shall document that the periodic inspections have been performed. The certification shall identify the machine or equipment on which the energy control procedure was being utilized, the date of the inspection, the employees included in the inspection and the person performing the inspection.
      5.  
    5. Copies of the inspection report shall be sent to the Chief Engineer and the Site Safety Advisor.
      6.  
  5. Training and Communication
    1. The JAC will provide training to ensure that the purpose and function of the energy control program is understood by employees. The training will provide the knowledge and skills required for the safe application, usage, and removal of energy controls. The training will include but not be limited to the following:
      • Each affected employee will be instructed in the purpose and use of the energy control procedure.
      • The JAC shall instruct all other employees whose work operations are or may be in an area where energy control procedures may be utilized, about the procedure, and about the prohibition relating to attempts to restart or re-energize machines or equipment which are locked out or tagged out.
        •  
    2. Retraining will be provided for all authorized and affected employees whenever there is a change in their job assignments, a change in machines, equipment or processes that present a new hazard, or when there is a change in the energy control procedures.
      • Additional retraining shall also be conducted whenever a periodic inspection reveals, or whenever there is reason to believe, that there are deviations from or inadequacies in the employee's knowledge or use of the energy control procedures.
        •  
    3. The JAC will document that employee training has been accomplished and is being kept up to date. The documentation shall contain each employee's name and dates of training.

F. Procedures (Appendix 2 in this chapter - presents the Lockout/Tagout steps in brief form)

  1. Pre-planning for Lockout (Preparation for Shutdown)

    1. An initial survey shall be made to determine which switches, valves, or other energy isolating devices apply to the equipment being locked out. More than one energy source (electrical, mechanical, hydraulic, pneumatic, chemical, thermal, or others) may be involved. Any questionable identification of sources shall be cleared by the employees with their supervisors. Before lockout commences, inform the Telescope System Specialist/Work Leader (TSS/WL). For Hilo work, inform the Facility Maintenance Manager or in his absence the Chief Engineer.

    2. Only supervisors or authorized individuals shall prescribe the appropriate duties and responsibilities relating to the actual details of effecting the lockout/tagout. Energy isolating devices shall be operated only by authorized individuals or under the direct supervision of authorized individuals. Where high voltages greater than 480V are involved, a contract electrician shall be responsible for turning off the main power controls.

    3. All energy isolating devices shall be adequately labeled or marked to indicate their function. The identification shall include the following: 

      •  equipment supplied
      • energy type and magnitude

    4. Where system complexity requires, a written sequence in checklist form shall be prepared for equipment access, lockout/tagout, clearance, release, and start-up.

  1. Lockout/Tagout Procedures

    1. Preparation. Notify all affected employees that a lockout is required and the reason therefore.

    2. Machine or Equipment Shutdown. If the equipment is operating, shut it down by the normal stopping procedure (depress stop button, open toggle switch). Disconnect switches shall never be pulled while under load, because of the possibility of arcing or even explosion. Personnel knowledgeable of equipment operation shall be involved with shut down or re-start procedures.

    3. Machine or Equipment Isolation. Operate the switch, valve, or other energy isolating device so that the energy source(s) (electrical, mechanical, hydraulic) is (are) disconnected or isolated from the equipment. Stored energy, such as that in capacitors, springs, elevated machine members, rotating flywheels, hydraulic systems, and air, gas, steam, or water pressure, must also be dissipated, disconnected, or restrained by methods such as grounding, repositioning, blocking, or bleeding-down. Pulling fuses is not a substitute for locking out. A yanked fuse is no guarantee the circuit is dead, and even if it were dead, there's nothing to stop someone from unthinkingly replacing the fuse.

CAUTION: Intermittently operating equipment such as pumps, blowers, fans, and compressors may seem harmless when dormant. Don't assume that because equipment isn't functioning, it will stay that way.

    1.  Application of Lockout/Tagout. Lockout and tag the energy isolating device with appropriate lock, even though someone may have locked the control before you. Refer to section-f below for group lockout procedures. You will not be protected unless you put your own padlock on it. For some equipment it may be necessary to construct attachments to which locks can be applied. An example is a common hasp to cover an operating button. Tags shall be attached to the energy isolating device(s) and to the normal operating control and shall be attached in such a manner as to preclude operation.

Note that the Castell key lockout systems use "Slave" keys and "Master" keys. To use them, remove the master key from the lower switch and insert it in the master/slave unit above. Then one or more of the slave keys can be taken out. The master key cannot be returned to the master switch until all slave keys are returned. DO NOT TAKE THE MASTER KEY

    1. Verification of Isolation

      •  After ensuring that no personnel can be exposed and as a check on having disconnected the energy sources, operate the push button or other normal operating controls to make certain the equipment will not operate.

      • Electrical control circuits may not be used as boundary isolation points since they do not provide adequate protection to interrupt the main power.

      • For electrical circuits, properly rated test equipment shall be used to test the circuit elements and electrical parts of equipment to which employees will be exposed to ensure circuit elements and equipment are de-energized.

    1. The Equipment is Now Locked Out.

  1. Release from Lockout/Tagout 

    1. Before lockout/tagout devices are removed and energy is restored to the machine or equipment, inspect the work area to ensure that nonessential items have been removed and to ensure that machine or equipment components are operationally intact.

    2. Check work area to ensure that all employees are in the clear.

    3. Notify affected employees that lockout/tagout devices have been removed.

    4. Each lockout/tagout device shall be removed from each energy isolating device by the employee who applied the device. The energy isolating devices may be opened or closed, i.e., circuit breakers, to restore energy to equipment.

  2.  Lockout/Tagout Interruption (Testing of Energized Equipment)

    1.  In situations where the energy isolating device(s) is locked/tagged out and there is a need for testing or positioning of the equipment/process, the following sequence shall apply:

  • Clear equipment/process of tools and materials
  • Clear personnel
  • Clear the equipment of lockout/tagout devices according to established procedure
  • Proceed with test
  • De-energize all systems and lockout/tagout the equipment to continue the work

  1. Outside Personnel (Contractors)

    1.  Whenever outside service personnel are to be engaged in activities covered by the scope and application of this policy the JAC and all contractors (including on-site contractors) shall inform each other of their respective lockout or tagout procedures.

    2. The JAC shall ensure that JAC personnel understand and comply with the restrictions and prohibitions of any contractor's energy control procedures. Contractors shall ensure that their personnel do likewise for JAC's policies as well as other contractor's policies.

  2.  Procedure Involving More Than One Person

    1.  If several people are working on a single system then they may use a single lockout provided that they all agree who is the person in charge. If two or more groups are working, for example, electrical and mechanical work, then each group shall apply their own locks. Multiple locking devices are available for this purpose.

  3.  Conditions for Padlock Removal by Someone Else

    1.  Lockout/tagout devices shall be removed only by the owner of the device except in the following situations:

  • Owner incapacitated
  • Owner no longer works for JAC
  • Owner cannot be contacted. If the owner is reached and the situation warrants then he/she may be required to come to work and remove the padlock

    1. If circumstances warrant the removal of a lockout/tagout device, every effort must be made to contact the owner of the device. If the owner of the device cannot be contacted then attempt to contact the Site Safety Advisor, failing whom the Chief Engineer, failing whom the Designated Official, for permission to remove the lockout. If none of them can be contacted, then the lock may not be removed.  It is recognized that this may well result in loss of telescope time.

G. Boundaries and Safe Isolation Checks

    This section provides requirements to ensure safe conditions are established when specifying the lock and tag boundaries for each of the hazard types listed.
  1. Safe Isolation for Electrical Energy: This section applies to situations where the potential for personnel contact with electrical parts is the hazard. Requirements applicable to other hazards associated with electrically driven equipment (e.g., rotating or moving equipment) are provided in other sections.
      2.  
      Note: Electrical control circuits may not be used as boundary isolation points since they do not provide adequate protection to interrupt main power. They may be tagged to protect the equipment but are insufficient to provide a safe condition and isolation boundary for personnel protection.
       
    1. Simple Plug-In Electrical Tools/Equipment do not require lockouts/tagouts if both the following apply:
      • Exposure to the hazards of unexpected energization or startup of the equipment is controlled by unplugging the equipment from the energy source, and
      • The plug is under the exclusive control of the employee performing the servicing or maintenance.
        •  
    2. Test Equipment Verification: During the lockout/tagout or before starting work, test equipment shall be used to test the circuit elements and electrical parts of equipment to which employees will be exposed and verify that the circuit elements and equipment parts are de-energized.
      3.  
    3. Test Equipment and High Voltages: Test equipment used on circuits with a nominal voltage rating greater than 600 volts shall be checked for proper operation immediately before and after the test.
      4.  
    4. Second Check for Electrical Equipment: In addition to the check with the test equipment, at least one of these steps shall be performed to verify that equipment has been de-energized.
      • If they are not danger tagged, attempt to operate the equipment controls to demonstrate it cannot be started.
      • Check the position indicators on electrical isolation devices to verify that they are open.
      • Verify that all disconnects are open.

  2. Rotating and Moving Equipment:

    1. After the lockout/tagout is installed, attempt to operate the equipment using the operating controls (if they are not danger tagged) or otherwise verify that the equipment cannot be started.

Note: If there is reason to doubt that electrical disconnects are in good repair or are properly identified, a voltage check shall be used to confirm that the equipment is deenergized.

    1. Verify that the equipment is de-energized by checking the position indicators on electrical isolation devices, visually verifying that any disconnects are open, or performing a voltage check to ensure that there is no power available.

    2. Where isolation from an energy source does not eliminate the potential for hazardous movement of equipment, the equipment shall be blocked or otherwise secured to prevent such movement. The blocking or securing devices shall be tagged and, if possible, locked in place.

  1. Safe Isolation for Fluid Systems (excluding cryogens)

    1. Safe Isolation for Low Temperature/Pressure Fluid Systems:  For fluid (liquid and/or gas) systems whose maximum operating temperature is less than 200F (93C) and maximum operating pressure is less than 500 psig, the following methods shall be used.

      • Systems and components that normally operate at temperatures and pressures above ambient shall be isolated using at least one valve between the work area and any heated or pressurized fluid, vented and, if possible, drained.

      • If possible, the equipment shall be maintained depressurized by opening a vent or drain in the isolated portion of the system (allowing for thermal expansion/contraction).
      • If a normal depressurization path cannot be provided within the work boundary, other methods shall be used to ensure that the system or component is adequately depressurized and drained (such as loosening the fasteners on flanged connections or valve bonnets, and removing instrument tubing).
        •  

    2. Valve Isolation Practices

      • Valves that Fail Open: Pneumatically or electrically operated valves that fail open shall not be considered shut for isolation purposes unless the valve operating supplies are isolated and a jacking device or gag is installed to shut or keep the valve shut.

      • Valves that Fail Shut: Pneumatically or electrically operated valves that fail shut shall not be considered shut for isolation purposes unless the valves are verified shut and the valve operating supplies are isolated and tagged out.
        •  
    3. Valve Operating Power: To use a pneumatically or electrically operated valve as an energy control boundary, the motive energy source for the valve shall be isolated and locked/tagged out after the valve is in the required position.

      • Tag Out all Valve Operators: All local and remote pneumatic and electric valve operators shall be tagged when the valve is used as a system isolation boundary point.

      • Regulators/Check Valves: Regulators and check valves shall not be used as isolation boundary valves unless the valve is mechanically restrained in the required position with a gagging device designed for that purpose.

    4. Valve Actuator Work : Additional isolations shall be considered and specified as necessary to ensure protection when working on valve motor actuators with manual overrides, springs, or other operating mechanisms.

  1. Safe Isolation for Vacuum Systems 

    1. After lockout/tagout devices are applied to energy isolating devices, all stored vacuum shall be vented to atmosphere.
    2. To prevent pressure buildup after the vacuum is vented to atmosphere, valves shall be left open to air.
      3.  
  1. Safe Isolation for Cryogenic Systems
    2.  
    1. After lockout/tagout devices are applied to energy isolation devices, all cryogens shall be drained.
    2. The cryogenic cooled parts shall be left to warm-up to ambient temperature before work is started.
       
  2. Stored Energy Considerations
    1. After lockout/tagout devices are applied to energy isolating devices, all potentially hazardous stored or residual energy downstream of the isolation device shall be relieved, disconnected, restrained, and otherwise made safe.

APPENDIX 1

If all of the following conditions exist then use of a PLD is permitted and it will not be necessary to document procedures:
  1. the machine or equipment has no potential for stored or residual energy or re-accumulation of stored energy after shut down which could endanger employees;
    2.  
  2. the machine or equipment has a single energy source which can be readily identified and isolated;
    3.  
  3. the isolation and locking out of that energy source will completely de-energize and deactivate the machine or equipment;
    4.  
  4. the machine or equipment is isolated from that energy source and locked out during servicing or maintenance;
    5.  
  5. a single lockout device will achieve a locked-out condition;
    6.  
  6. the lockout device is under the exclusive control of the authorized employee performing the servicing or maintenance;
    7.  
  7. the servicing or maintenance does not create hazards for other employees; and
    8.  
  8. the JAC, in utilizing this exception, has had no accidents involving the unexpected activation or start-up of the machine or equipment during maintenance or repair activities.

APPENDIX 2 - LOCKOUT/TAGOUT CHECKLIST

The established procedure for the application of lockout/tagout shall cover the following elements and actions and shall be done in the following sequence.
  1. Preparation for shutdown. Before an authorized or affected employee turns off a machine or equipment, the authorized employee shall have knowledge of the type and magnitude of the energy, the hazards of the energy to be controlled, and the method or means to control the energy. Notify all affected employees that a lockout is required and the reason therefore.
    2.  
  2. Machine or equipment shutdown. The machine or equipment shall be turned off or shut down using the procedures required by this standard. An orderly shutdown must be utilized to avoid any additional or increased hazards(s) to employees as a result of equipment de-energization.
    3.  
  3. Machine or equipment isolation. All energy isolating devices that are needed to control the energy to the machine or equipment shall be physically located and operated in such a manner as to isolate the machine or equipment from the energy source(s).
    4.  
  4. Lockout/tagout device application.
    5.  
  5. Stored energy. Following the application of lockout/tagout devices to energy isolating devices, all potentially hazardous stored or residual energy shall be relieved, disconnected, restrained, or otherwise rendered safe.  If there is a possibility of reaccumulation of stored energy to a hazardous level, verification of isolation shall be continued until the servicing or maintenance is completed, or until the possibility of such accumulation no longer exists.
    6.  
  6. Verification of Isolation. Prior to starting work on machines or equipment that have been locked out or tagged out, the authorized employee shall verify that isolation and de-energization of the machine or equipment have been accomplished.
    7.  
  7. Release from lockout/tagout.

APPENDIX 3: SPECIFIC DOCUMENTED PROCEDURES: JCMT

    These procedures cover certain frequently occurring activities and certain activities in which more than one source of energy may present a hazard. Note that for any lockout at JCMT, even ones not covered by these specific procedures, the TSS/WL shall be informed and a note shall be made on the lockout board.
     
    1. End of day checks after any of these procedures

      1. Before leaving the JCMT, you shall always inform the TSS/WL. At this time a check shall be made for any outstanding lockouts.

      2. If the TSS/WL finds that a lockout has been left in place but the member of staff whose name appears against it has left, he shall take the following action:

        1. Try to contact the member of staff for permission to remove the lockout. (Typically, in a vehicle or at HP.) If they confirm that you may remove the lockout, do so. This may require use of  a bolt cutter and safety glasses.

        2. If you cannot contact the member of staff, check to see if the work appears to be complete and that no obstructions have been left in the work area. Do not remove the lockout yet.

        3. Attempt to contact the Site Safety Advisor, failing whom the Chief Engineer, failing whom the Designated Official, for permission to remove the lockout. If none of them can be contacted, then the lock may not be removed.  It is recognized that this may well result in loss of telescope time.

        4. Make sure that the member of staff concerned is informed as soon as possible that the lockout was removed.

    1. Location of lockouts 

      1. Carousel Azimuth, Roof and Doors: Use the castell key system behind the starlift.

Note that the lockout systems use "Slave" keys and "Master" keys. To use them, remove the master key from the lower switch and insert it in the master/slave unit above. Then one or more of the slave keys can be taken out. The master key cannot be returned to the master switch until all slave keys are returned. Put the master castell key in the multiple lockout device and take one of the slave keys to the control room, hang the key on the lockout board and write your name, date, and locked out system identy on the lockout board.  

      1. Antenna Elevation, Antenna Azimuth: Use the castell key system located next to the electrical switch gear in front of the antenna.
          2.  
          Note that the lockout systems use "Slave" keys and "Master" keys. To use them, remove the master key from the lower switch and insert it in the master/slave unit above. Then one or more of the slave keys can be taken out. The master key cannot be returned to the master switch until all slave keys are returned. Put the master castell key in the multiple lockout device and take one of the slave keys to the control room, hang the key on the lockout board and write your name, date, and locked out system identity on the lockout board.
           
      2. Roof latch compressed air: The valve is in the air line near the tank.
        3.  
      3. Roof latch electrical supply: Use the roof castell key.
        4.  
      4. Compressors: The compressor switches are located near the compressors, and are labeled "compressor #1" and "compressor #2".
        5.  
      5. Louvres electrical: Use the switch in panel D behind the hatch, switch number D1.
        6.  
      6. Louvres compressed air: The valve is in the air line near the tank.
        7.  

    1. Access to antenna Rx cabin for routine adjustments and services

      2. This procedure applies to tuning receivers and filling receiver cold-loads where no hoisting of a dewar is required.
       
      1. Inform the TSS/WL of your plans and check that the antenna will not be moved in elevation.
        2.  
      2. When finished, inform the TSS/WL.
        3.  
    2. Access to the Rx cabin and backing structure for minor work

      3. This procedure applies to access to the Rx cabin for fills where hoisting of a dewar is required, and to any extensive access to the backing structure, for example, to change an adjuster or to reach any part of the structure where climbing is required. This procedure also applies to any work on the elevation drive system.
       
      1. Inform the TSS/WL of your plans
        2.  
      2. Lockout the power to the antenna elevation drives - see B2 above
          3.  
      3. Check that no work will be done on the elevation brake - if in doubt, use the elevation locking pin.
        4.  
      4. Verify, by attempting to operate the controls, that the elevation drives are disabled.
        5.  
      5. When the work is finished, inform the TSS/WL, remove the locking pin if applicable, replace the castell key, remove your name from the board, and verify that the drives are working normally.
        6.  
    3. Access to the Rx Cabin or backing structure for major work

      4. This procedure applies to any work in which the balance of the antenna may be affected and the elevation brake may not hold.
       
      1. Inform the TSS/WL of your plans
        2.  
      2. Drive the antenna to the elevation at which the work is to be performed; this must be one at which the elevation locking pin can be inserted.
        3.  
      3. Insert the elevation locking pin
        4.  
      4. Lockout the power to the antenna elevation drives - see B2 above
          5.  
      5. Verify, by attempting to operate the controls, that the elevation drives are disabled.
        6.  
      6. When the work is finished, inform the TSS/WL, remove the locking pin and replace the castell key, remove your name from the board, and verify that the drives are working normally.

        7.
    4. Access to the plinth, the antenna track, or the antenna azimuth drive motors

      5. This procedure applies to any work in which movement of the antenna in azimuth could constitute a hazard, and to any work on the antenna azimuth drive systems. Access to the plinth to check switches, compressor or adsorber status or to switch over the inclinometry cables will not normally require lockout provided it is done by, or under the direct control of, the TSS/WL.
       
      1. Inform the TSS/WL of your plans.
        2.  
      2. Lockout the power to the antenna azimuth drives - see B2 above and lockout the power to the carousel drives - see B1 above

      3. If your work is such that no hazard would be presented by movement of the antenna in azimuth, for example access to the antenna azimuth drive electronics, then the carousel drives need not be locked out. The reason for locking out both systems is that a movement in one could cause movement of the other.
        4.  
      4. If your work is such that ANY movement of the antenna could cause a hazard (e.g., inspecting the rollers), then it is necessary to lock the antenna to the carousel with a suitably placed clamp. Consider also applying the carousel brakes in case the wind should blow the building around.
        5.  
      5. Verify, by attempting to operate the controls, that the azimuth drives are disabled.
        6.  
      6. When the work is finished, inform the TSS/WL, remove any clamps if applicable, replace the castell keys, remove your name from the board, and verify that the drives are working normally.
        7.  
    5. Access to the carousel drives, the carousel track, or work in the basement.

      6. This procedure applies to any work in which movement of the carousel in azimuth could present a hazard, including work on the track, work on the drives, or any work requiring access to the underneath of the carousel floor (e.g., to change light bulbs).
       
      1. Inform the TSS/WL of your plans.
      2. Lockout the power to the antenna azimuth drives - see B2 above and lockout the power to the carousel drives - see B1 above
If your work is such that no hazard would be presented by movement of the carousel in azimuth, for example access to the carousel azimuth drive electronics, then the antenna drives need not be locked out. The reason for locking out both systems is that a movement of one could cause movement of the other. 
      1. Verify, by attempting to operate the controls, that the azimuth drives are disabled.
        2.  
      2. When the work is finished, inform the TSS/WL, replace the castell keys, remove your name from the board, and verify that the drives are working normally.
        3.  
    1. Access to the carousel doors

      2. This procedure applies to any work in an area in which movement of the doors could cause injury, including work on the apron in the swept area of the doors such as snow clearing.
       
      1. Inform the TSS/WL of your plans.
      2. Lockout the power to the doors - see B1 above 
          3.  
      3. Check by attempting to operate the doors that the power is off
        4.  
      4. When the work is finished, inform the TSS/WL, remove your name from the board, replace the castell key, and verify that the drives are working normally.
        5.  
    2. Access to the roof

      3. This procedure applies to any work in an area in which movement of the roof could cause injury including snow clearing.
       
      1. Inform the TSS/WL of your plans.
        2.  
      2. Lockout the power to the roof and doors - see B1 above
          3.  
      3. Check by attempting to operate the doors that the power is off.
        4.  
      4. When the work is finished, inform the TSS/WL, remove your name from the board, replace the castell key, and verify that the drives are working normally.
        5.  
      5. If your work requires the roof to move in order to reach the correct location for work or in order to examine moving parts, then the TSS/WL may, with prior agreement, remove and replace the castell key but only if two-way communication is established before the removal of the lockout and during motion of the roof. If your work will not start until the roof has been moved under your direction then you need not apply the lockout and the TSS/WL may apply it for you. Under no circumstances shall work be done in a hazardous area of the roof without a lockout applied.
        6.  
    3. Access to the Rx Cabin when the antenna will be moved in elevation

      4. This procedure applies to access to the Rx cabin when it is known that the antenna will be moved, for example, to verify operation of an instrument as the antenna moves. This shall be avoided wherever possible, but if there is no practicable alternative then the following steps must be taken.
       
      1. Liaise very closely with the TSS/WL before and during the work. Establish two-way communication, for example, using the telephone system.
        2.  
      2. Agree beforehand the movements that will be made and what the TSS/WL shall do if an emergency arises. Agree a limit for tilt angle.
        3.  
      3. Establish how you will be supported (where the safe foot holds are) during the work as the antenna tilts, and ensure that all of the measurements you need to make are easy and can be done while you are adjusting your position.
        4.  
      4. Before starting the tilt, check very carefully for any loose objects in the cabin which could move around.
        5.  
    4. Access to the SMU for Minor Work and Checks

      5. This procedure applies to access to the SMU via the Starlift or overhead crane for minor work and checks.
       
      1. Inform the TSS/WL of your plans.
        2.  
      2. Drive the antenna to the elevation and azimuth at which the work is to be performed.
        3.  
      3. Lockout the electrical power to the following:
      4. Put the above keys on the board in the Control Room and write your name,  date, and identify locked out system on the board.
        5.  
      5. Verify, by attempting to operate the controls, that the antenna elevation, azimuth and carousel azimuth drives are disabled.
        6.  
      6. When the work is finished, inform the TSS/WL, replace the castell keys and remove your name from the board, and verify that the drives are working normally.

        7.
    5. Access to the SMU and Tetrapod for Major Work

      6. This procedure applies to access to the SMU for removal from the tetrapod and removal of the tetrapod, via the overhead crane.
       
      1. Inform the TSS/WL of your plans.
        2.  
      2. Drive the antenna to the elevation at which the work is to be performed; this must be an elevation at which the elevation locking pin can be inserted.
        3.  
      3. Insert the elevation locking pin.
        4.  
      4. Lockout the electrical power to the following:
      5. Put the above keys on the board in the Control Room and write your name,  date, and identify locked out system on the board.
        6.  
      6. Verify, by attempting to operate the controls, that the antenna elevation, azimuth and carousel azimuth drives are disabled.
        7.  
      7. When the work is finished, inform the TSS/WL, remove locking pin, replace castell keys, lockouts and remove your name from the board, and verify that the drives are working  normally.
        8.  
    6. Access to the air compressors for electrical service

      7. This procedure applies to any work on the air compressors in which only electrical energy could pose a hazard.
       
      1. Inform the TSS/WL of your plans.
        2.  
      2. Lockout the electrical power (see B5 above). Put the keys on the board in the control room and write your name, date, and identify locked out system on the board.
        3.  
      3. Verify, by attempting to operate the controls, that the power is off.
        4.  
      4. When the work is finished, inform the TSS/WL, remove the lockout, remove your name from the board, and verify that the compressors are working normally.
        5.  
    7. Access to the louvre system - more than one energy source present

      8. This procedure applies to any work on the louvre system in which the compressed air and electricity both present a hazard.
      1. Inform the TSS/WL of your plans.
        2.  
      2. Isolate the compressed air reservoir at the valve, lock it out, and drain the line. Lockout the electrical power. Put the keys on the board in the control room and write your name, date, and identify locked out system on the board.
        3.  
      3. Verify, by attempting to operate the controls, that the louvres are disabled.
        4.  
      4. When the work is finished, inform the TSS/WL, remove the lockouts, remove your name from the board, and verify that the louvres are working normally.
        5.  
    8. Access to the roof pneumatic locks - more than one energy source present

      9. This procedure applies to any work on the roof pneumatic locks and their interlocks in which the compressed air and electricity both present a hazard.
       
      1. Inform the TSS/WL of your plans.
        2.  
      2. Isolate the compressed air reservoir at the valve, lock it out, and drain the line. Lockout the electrical power at the roof drive castell key. Put the keys on the board in the control room and write your name, date, and identify locked out system on the board.
        3.  
      3. Verify, by attempting to operate the controls, that the locks and the roof drives are disabled.
        4.  
      4. When the work is finished, inform the TSS/WL, remove the lockouts, remove your name from the board, and verify that the roof is working normally.
  1. Starlift use to access the antenna or carousel

    2. This procedure applies to the use of the starlift to access the antenna or carousel when the work requires no movement of the antenna or carousel.
     
    1. Inform the TSS/WL of your plans.
      2.  
    2. Drive the antenna to the elevation and azimuth at which the work is to be performed.
      3.  
    3. Drive the carousel to the azimuth at which the work is to be performed.
      4.  
    4. Lockout the electrical power to the following:
    1. Verify, by attempting to operate the controls, that the antenna elevation, azimuth and carousel azimuth drives are disabled.
      2.  
    2. When the work is finished, inform the TSS/WL, replace the castell keys and remove your name from the board, and verify that the drives are working normally.
      3.  
  1. Starlift use to access the antenna or carousel, when the antenna will be moved in elevation or azimuth

    2. This procedure applies to the use of the starlift to access the antenna when it is known that the antenna will be moved in elevation or azimuth.
     
    1. Inform the TSS/WL of your plans.
      2.  
    2. Appoint a member of staff to be a safety watch and locate this safety watch by the antenna elevation/azimuth drive castell key system.
      3.  
    3. Agree beforehand the movements that will be made and what the safety watch shall do if an emergency arises.Safety watch shall switch off the elevation and elevation drive power using the castell key system when instructed by the starlift operator.
      4.  
    4. Establish two-way communication between the starlift operator and the safety watch using two-way radios.
      5.  
    5. Lockout the electrical power to the following:
    6. Verify, by attempting to operate the controls, that the carousel azimuth drives are disabled.
      7.  
    7. When the work is finished, inform the TSS/WL, replace the castell keys and remove your name from the board, and verify that the drives are working normally.

      8.
  2. Starlift use to access the antenna or carousel, when the carousel will be moved in azimuth.

    3. This procedure applies to the use of the starlift to access the antenna or carousel, when the carousel will be moved in azimuth.
     
    1. Inform the TSS/WL of your plans.

    2. Appoint a member of staff to be a safety watch and locate this safety watch by the carousel azimuth drive castell key system.
      3.  
    3. Agree beforehand the movements that will be made and what the safety watch shall do if an emergency arises. Safety watch shall turn off power to the carousel azimuth drives using the castell key system when instructed by the starlift operator.
      4.  
    4. Establish two-way communication between the starlift operator and the safety watch using two-way radios.
      5.  
    5. Lockout the electrical power to the following:
    1. Verify, by attempting to operate the controls, that the antenna elevation and azimuth drives are disabled.
      2.  
    2. Use starlift carousel interlock override button in starlift when moving the carousel.
      3.  
    3. When the work is finished, inform the TSS/WL, replace the castell keys and remove your name from the board, and verify that the drives are working normally.

APPENDIX 4: SPECIFIC DOCUMENTED PROCEDURES: UKIRT

These procedures cover certain frequently occurring activities and are included for clarity.
  1. End of day checks after any of these procedures

    1. Before leaving UKIRT, you shall always inform the TSS/WL and double check that any lockouts you have applied have been removed and the systems have been re-energized and tested.

    2. If the TSS/WL finds that a lockout has been left in place but the member of staff whose name appears against it has left, he shall take the following action:
      1. Try to contact the member of staff for permission to remove the lockout. (Typically, in a vehicle or at HP.) If they confirm that you may remove the lockout, do so. This may require use of  a bolt cutter and safety glasses.
        2.  
      2. If you cannot contact the member of staff, check to see if the work appears to be complete and that no obstructions have been left in the work area. Do not remove the lockout yet.
        3.  
      3. Attempt to contact the Site Safety Advisor, failing whom the Chief Engineer, failing whom the Designated Official, for permission to remove the lockout. If none of them can be contacted, then the lock may not be removed.  It is recognized that this may well result in loss of telescope time.
        4.  
      4. Make sure that the member of staff concerned is informed as soon as possible that the lockout was removed.
       

  2. Location of lockouts and switches

    1. Dome 480V power - isolates the windblind, the crane, and the top end hoists as well as the 480V busbars. Switch at bottom of south column steps.

    2. Dome 208V power - isolates the shutter, the dome lights, the Dome Ventilation System (DVS) motors, the 208V busbars, and the 120V supply for the electronics to the windblind, dome temperature monitoring system, and the DVS. The switch is located at the bottom of the south column steps. 

    3. DVS system circuit breakers: Breakers #8 (motors) and #14 (PLC) in panelboard DC (left hand side of dome crane) on the catwalk level. These can be used to isolate the DVS system for maintenance or servicing while allowing the dome lights (and other dome 208/120V systems) to remain on.

    4. DVS  Local Control Station switches: Each Weather Tight Enclosure (WTE) has an individual switch next to the WTE, which can be used for manual operation of the unit. This switch cannot be used to lock out the WTE for maintenance or servicing as it is in the control circuit and is not an acceptable energy isolating device.

    5. Castell key switch for telescope drive power (TD) [slave keys DRV1, DRV2, DRV3]. On the south telescope column.

    6.  Castell key switch for mirror covers power (MC) [slave keys CVR1, CVR2, CVR3]. On the south telescope column.

    7. Castell key switch for dome drive power (DD) [slave keys DP1, DP2].  On the large electrical box near the north telescope column.

      Note Castell Key System:  The lockout systems use "Slave" keys and "Master" keys. To use them, remove the master key from the switch and insert it in the master/slave unit. Then one or more of the slave keys can be taken out. The master key cannot be returned to the master switch until all slave keys are returned. Put the master castell key in the multiple lockout device and take one of the slave keys, hang the key on the appropriate hook on the "lockout" board in the Control Room, write your name and date on the board.  When finished replace slave key and master key, and remove your name and date from the "lockout" board.

  1. Telescope structure - minor work

    This procedure covers access to the telescope for minor servicing which does not involve a significant change to the balance.

    1. Inform the TSS/WL of your plans and make an entry in the log book. 

    2. Lock out the telescope drive power using the Castell Key System (TD).

      Note: If required to do the work, you may remove your castell key from the board and keep it on your person.  DO NOT remove your name and date from the board until the work is complete.

  1. If working on or above the mirror covers, also lock out the mirror covers power (MC)  (see Chapter 10, Section E 12 for access to the top of the mirror covers).

  2. Verify, by attempting to operate the controls, that the telescope drives, and if  applicable, the mirror cover drives, are disabled.

  3. When the work is finished,

  • replace the castell key (TD),
  • replace the mirror cover castell key (MC) if applicable,
  • verify that the power has been restored,
  • remove your name and date from the "lockout" board,
  • inform the TSS/WL that you have finished. 
  1. Telescope structure - major work

    2. This procedure covers access to the telescope structure for work that may unbalance the telescope, especially instrument changes or any work in which unexpected movement of the telescope could pose a hazard.  

    1. Inform the TSS/WL of your plans and make an entry in the log book.

    2. Lock out the telescope drive power using the Castell Key System (TD).

  1. If working on or above the mirror covers, also lock out the mirror covers power (MC)  (see Chapter 10, Section E 12 for access to the top of the mirror covers).

  2. Verify, by attempting to operate the controls, that the telescope drives, and if applicable, the mirror cover drives are disabled.

  3. Attach the telescope tethers.

  4. When the work is finished:

  • remove the tethers,
  • replace the castell key (TD),
  • replace the mirror cover castell key (MC) if applicable,
  • remove your name and date from the "lockout" board,
  • inform the TSS/WL that you have finished.
         
  1. Access to the mirror covers

    2. This procedure covers access to the mirror covers (see Chapter 10, Section E 12 for access to the top of the mirror covers).

    1. Inform the TSS/WL of  your plans and make entry in the log book.

    2. Lock out the telescope drive power using the Castell Key System (TD).

  1. Lock out the mirror covers power using the Castell Key System (MC).

  1. Verify, by attempting to operate the controls, that the telescope and the mirror covers drives are disabled.

  2. When work is finished:

  • replace castell keys (MC) and (TD),
  • verify the power has been restored to both systems,
  • remove your name and date from the "lockout" board,
  • inform the TSS/WL that you have finished. 

  1. Other systems on the telescope

    1. There are numerous other telescope systems each of which may need to be switched off in order to make the work safe. Many of them are controlled by a plug and socket and so locking out may not be required - if in doubt perform a risk assessment.

    2. Inform the TSS/WL of your plans and make an entry in the log book.

      3.  
  2. Dome Catwalk

    3. This procedure covers access to the catwalk for examination or operation of the DVS units or other equipment (see Chapter 10, Section E14 for access to the dome catwalk).  

    1. Inform the TSS/WL of your plans and make an entry in the log book.

    2. Lock out the power to the dome using the Castell Key Ssytem (DD).

    3. If necessary, lock out either the 208V or 480V dome power, or both depending upon which systems are to be worked on.

    4. The windblind vertical bus duct on the right side shutter arch girder carries exposed 480V.  When working in this area the 480V dome power shall always be locked out.

    5. Verify, by attempting to operate the controls, that the dome drives are disabled.

    6. If any of the systems supplied by the 208V or 480V dome power were locked out - verify, by attempting to operate the controls, that these systems are disabled.

    7. When work is  finished:

  • replace the Castell key (DD),
  • if applicable, remove  your lockout from either or both the 208V and 480V dome power,
  • verify the power has been restored to the dome drives and other equipment,
  • remove your name and date from the "lockout" board,
  • inform the TSS/WL that you have finished.
  1. Dome catwalk - Dome Ventilation System (DVS) / Weather Tight Enclosure (WTE)  Manual Operation

    2. This procedure covers access to the catwalk to manually operate the WTE using the pushbutton controls or chains (see Chapter 10, Section E14 for access to the dome catwalk) .
     
    1. Follow the procedures in (G) above.

    2. Each WTE has a local control station with a HAND/OFF/AUTO switch which operates as follows.

      1. The HAND position enables the open/close pushbuttons.
      2. The AUTO position enables the PLC automated control.
      3. The OFF position disables both the pushbutton and PLC control.
Note that this switch cannot be used to lock out the WTE for maintenance or servicing as it is in the control circuit and is not an acceptable energy isolating device.

    1. When using the chains to open or close a WTE, the switch shall be set to the OFF position (not the HAND position which allows local control) to prevent unexpected movement of the WTE. 

    2. When work is  finished: 
  • replace the Castell key (DD),
  • if applicable, remove  your lockout from either or both the 208V and 480V dome power,
  • turn local control switch(es) to AUTO or HAND as required,
  • verify the power has been restored to the dome drives and other equipment,
  • remove your name and date from the "lockout" board,
  • inform the TSS/WL that you have finished.
  1. Dome Catwalk - Dome Ventilation System (DVS) / Weather Tight Enclosure (WTE) Servicing
This procedure covers access to the catwalk to service, maintain, or repair the DVS system. 

  1. Follow procedures in (G) above.

  2. DVS power shall be locked out using the DVS system circuit breakers or the dome 208V switch (see section B of this appendix). 

    1. DVS motor circuit breaker: Panel DC breaker #8 isolates power to all the WTE motors. This breaker shall be locked out for maintenance and repair of the WTE's.
      2.  
    2. DVS PLC circuit breaker: Panel DC breaker #14 isolates power to the PLC electronics enclosures located on the catwalk to the left of the dome shutter (including control power to the WTE's). This breaker can be locked out alone or in addition to breaker #8 for electrical/electronics related maintenance and repair.

The OFF position on the WTE local control station switch cannot be used to lock out a WTE for maintenance or servicing as it is in the control circuit and is not an acceptable energy isolating device.

  1. Verify, by attempting to operate the controls, that the power to the WTE motors is off and if  applicable, to the DVS PLC electronics.

  2. When work is finished:
  • remove lockout from 208V dome power switch or the panel DC breakers #8 or #14,
  • replace the Castell key (DD) to restore dome drive power,
  • verify the power has been restored to the dome drives and DVS systems,
  • remove your name and date from the "lockout" board,
  • inform the TSS/WL that you have finished.

  1. Dome Shutter

    2. This procedure covers access to the catwalk to service, maintain, or repair the dome shutter. In addition, this procedure must be followed whenever working in the area on the catwalk directly in front of the dome shutter (see Chapter 10, Section E14 for access to the dome catwalk).
     
    1. Inform the TSS/WL of your plans and make an entry in the log book.
      2.  
    2. Lock out the dome drive power using the Castell Key System (DD).
        3.  
    3. Lock out power to the dome 480V power – this isolates the windblind, the crane, and the top end hoists as well as the 480V busbars. The switch is located at bottom of south column steps.

    4. Lock out the shutter power. The switch is located to the left side of the shutter.

    5. Verify, by attempting to operate the controls, that the power is off to the dome drives, windblind and shutter.

    6. It should be noted that the windblind poses an inherent danger when one is working in between the shutter arch girders. Thus, the stored energy (gravity) of the windblind shall be restrained by mechanical means (i.e. clamping or blocking).  

    7. When work is finished:
      • if applicable, remove mechanical clamping/blocking from windblind,
      • remove lockout from shutter power,
      • remove lockout from 480V dome power,
      • replace the castell key (DD) to restore dome drive power,
      • verify the power has been restored to the dome drives, windblind, and shutter,
      • remove your name and date from the "lockout" board,
      • inform the TSS/WL that you have finished.

        •
  2.  Genie Articulating Boom Lift (access the Dome)

    3. This procedure covers any work carried out using the genie lift to access the DOME. 

    1. Inform the TSS/WL of your plans and make an entry in the log book.

    2. Lock out the dome drives using the Castell Key System (DD).

    3. Lock out the telescope drive power using the Castell Key System (TD).

    4. Verify, by attempting to operate the controls, that the power is off to the dome drives and telescope drives.

    5. If you are using the genie to work on the dome shutter or dome windblind systems then you must follow the lockout procedures in section J of this appendix.

    6. When work is finished:

  •  replace the castell key  (DD) to restore dome drive power,
  •  replace the castell key (TD) to restore telescope drive power,
  • remove lockouts from shutter or 480V power if applicable,
  • verify the power has been restored to all systems,
  • remove your name and date from the "lockout" board,
  • inform the TSS/WL that you have finished.
  1. Genie Articulating Boom Lift (access the Telescope)

This procedure covers any work carried out using the genie lift to access the TELESCOPE.

  1. Inform the TSS/WL of your plans and make an entry in the log book.

  2. Lock out the telescope drive power using the Castell Key System (TD).

  3. Verify, by attempting to operate the controls, that the power is off to the telescope drives.

  4. When work is finished:

    • replace the castell key (TD) to restore telescope drive power,
    • verify the power has been restored to the telescope drives,
    • remove your name and date from the "lockout" board,
    • inform the TSS/WL that you have finished.
         
  1. Dome Drives

This procedure covers access to the dome drives.  

    1. Inform the TSS/WL of your plans and make entry in the log book.

    2. Lock out the dome drives using the Castel Key System (DD).

    3. Verify, by attempting to operate the controls, that the power is off to the dome drives and telescope drives.

    4. When work is finished:

      • replace the castell key (DD) to restore dome drive power,
      • verify the power has been restored to the dome drives,
      • remove your name and date from the "lockout" board,
      • inform the TSS/WL that you have finished.
          •  
  1. Secondary Mirror Unit (SMU)

    2. This procedure covers access to the SMU using the Lift-A-Loft Scissors Manlift (see Chapter 10, Section E 12 for access to the top of the mirror covers).  

    1. Inform the TSS/WL of your plans and make an entry in the log book.

    2. Lock out the mirror covers power using the Castell Key System (MC).

    3.  Lock out the telescope drive power using the Castell Key System (TD).

    4. Lock out the SMU power as follows:

      • unplug cables to SMU unit

    5. Verify, by attempting to operate the controls, that the power is off to the mirror covers drive, telescope drives, and SMU.

    6. Attach the telescope tethers.

    7. When the work is finished:

      • remove telescope tethers,
      • replace castell keys to the mirror covers (MC) and telescope drive (TD) power systems,
      • remove lockout from the SMU power,
      • verify the power has been restored to the three systems,
      • remove your name and date from the "lockout" board,
      • inform the TSS/WL that you have finished.
Contact: JAC webmasters. Updated: Mon May 14 16:33:09 HST 2007

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