0093-3740

• Site conducted

  Select

• Turbine ID

• SAP Service Order Number

• Conducted on

  Date

• LOTO carried out by:

• ONLY an ECC can approve LOTO instructions

• Developed by:

• Reviewed by:

• Approved by:

• Approval date:

Purpose of LOTO

• Description of Task: To gain access to the hub for service and inspection

• Locations where work will be done: Hub

Scope of LOTO Instruction

• Equipment - V162 EnVentus Mk0A - 0C

• Conditions that must be met before the LOTO can take place:
  The wind turbine must be in the STOP mode = mode selector in position 4.
  Turn the mode selector service key (++01-615-08-S1) in tower controller
  cabinet (++01) to position 4.
  In ++03 nacelle control panel, the mode selector service key (++03-615-08-
  S2) must be turned to position 4 and the enable output key (++03-615-08-
  S4) must be turned to position 1.
  (Acknowledge on the toolkit4 panel.)

• Description of LOTO boundary:
  Section C:
  Working in the HUB for service-related checks, but no component
  replacements.

• Reference drawings or documents (including risk assessment):
  
  0017-5309 Vestas standard for control of hazardous energy
  0017-5311 Vestas standard for electrical safety
  0093-1983 Safe work in hub
  A005-7814 Hub hydraulic diagram (EnVentus™ V150)
  A006-2742 Hub hydraulic diagram (EnVentus™ V162)
  0092-3874 Rotor locking system
  0079-5378 Electrical diagram, EnVentus™ Mk 0A
  A015-2922 Electrical diagram EnVentus™ Mk 0B
  A015-0303 Electrical diagram EnVentus™ Mk 0C
  A005-5044 Nacelle hydraulic diagram, EnVentus™

• Comments:
  The LOTO instruction does not take local updates of the wind turbine into account, but only standard Vestas options.
  
  Do not try to lock the rotor when the rotor turns. Always engage the rotor brake before you lock the rotor.
  Do a visual inspection to see if the 2 rotor lock pins are fully engaged. The transparent cover on the hydraulic cylinders shows the position of the piston rod. The cylinder cover includes additional marks for fully engaged (1) and disengaged (2) position.
  
  Do not apply the Rotor Brake in high winds. (-235-S1)
  
  

Isolation

• Step 1 Lock Rotor

  

• Rotor LOCKED : Person in charge

  Sign

• Picture of completed Isolation.

  Media

• Step 2 Via menu 11.99 Place hub in safe mode.

  

• Hub in safe Mode: Person in charge

  Sign

• Picture of completed Isolation.

  Media

• No Further Isolations

Person in Charge of LOTO (I have verified absence of energy in the working area)

• LOTO established by

  Sign

• Company

• Date/Time

  Date
LOTO transfer

• Person in charge of LOTO has been transferred to:

  Sign

• Company

• Date/Time

  Date
Partial re-energization of LOTO (Verify all personnel are clear of the LOTO Boundary, all tools are removed and verify the absence of hazardous energy after LOTO has been restored)

• Isolation ID:

• Remove date/time

  Date

• Re-apply date/time

  Date

Restoration Procedure (I have verified that all tools and parts used have been removed and the equipment is ready to be energised.)

• Hub entry Switch -135-S3 Turn to Auto

  Sign

• Hub in Safe Mode menu 11.99 To "Leave safe mode"

  Sign

• Rotor Unlocked and pins disengaged

  Sign

• NO FURTHER RESTORATION STEPS

Clearing the LOTO (Person in charge of the LOTO)

• Has the Loto been completed as required to meet compliance requirements.

  yes

  no

• LOTO Cleared by:

  Sign

• Company

• Time stamp

  Date

Manager, or authorized delegate, review

• Reviewers signature

  Sign

• Time stamp

  Date

• Has the Loto been completed as required to meet compliance requirements.

  yes

  no