AP SLPS Installation Guide for G8/G9
Transcript of AP SLPS Installation Guide for G8/G9
AP SLPS Installation Guide For G8/G9
Art. Code D0077 Rev. 16 19/October/2018
Author Jacob Nicholas The information throughout this document is a property of Applied
Philosophy and cannot be used or reproduced without written
permission of the owner Audience Clients Pages 13
AP SLPS Installation Guide For
G8/G9
AP SLPS Installation Guide for G8/G9 D0077 R 16
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Contents
1 Summary Sheet...................................................................................................... 3
2 Terms and Names .................................................................................................. 4
3 SLPS Installation .................................................................................................... 5
4 Recommended Turbine Grounding Verification ...................................................... 11
5 Appendix A: Installation Checklist ......................................................................... 13
This document is not a substitute for the
appropriate safety trainings and turbine access
and maintenance documentation.
Before working on the LPS, ground the Blades
first.
The blade static electricity can be fatal.
The lubricant gel on the SLPS is a chemical.
Protect your skin by using gloves and avoid skin
contact.
Unsafe work at height is a risk to you, to others
and the equipment. Tie-off yourself and your
tools when working in the tower.
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1 Summary Sheet
Applicable Parts D0080, D0081, D0082
Target Equipment Gamesa 2.x MW Platform (G80, G87, G90, G97)
Brief Process Flow 1. Access the nacelle. 2. Lock the rotor and Install the SLPS on Blades A, B and C. 3. Verify correct installation. 4. Inspect Nacelle Grounding cables and clean if required. 5. Exit and return turbine to Service.
Installation Time 1 hour + 1 hour for optional nacelle grounding cleaning.
Skill Level Basic training and ability to access nacelle and lock rotor.
Tools
• Blade grounding cable
• Permamnent marker with sharp tip(e.g. small Sharpie)
• 2 x Channel locks or Vise-Grips
• 2 x 10mm wrench or socket set
• 2 x 13mm wrench (for nacelle grounding cleaning)
• Tool tie-off(s)
• Dremel tool with sanding drum (for nacelle grounding cleaning)
• Smartphone with camera (for verification)
Material • Non-permanent threadlocker (e.g., “Blue Loctite”) • Protective paint (e.g., Zinc-It) (nacelle grounding cleaning)
Task-Specific Risk 1 Proximity to or contact with the Blade LPS.
Risk Mitigation 1 Ground blades using appropriate grounding cables.
Task-Specific Risk 2 Nacelle grounding cleaning requires work while on ladder.
Risk Mitigation 2 Use Personal Protection Equipment, tie-off tools.
Compliance Installation Checklist with photo verification.
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2 Terms and Names
Figure 1: Tower
Figure 2: SLPS on a Candlestick
Figure 3: Blade root
Figure 4: Rotor Cuff
Location of
WT991(A/B/C/D)
Inside the tower
Location of
WT991(A/B)
SLPS Blade Side
SLPS Nacelle Side
Blade Root
Conduction Band
Rotor Cuff
(Gutter Ring)
Arc Receptor
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3 SLPS Installation
1. Lock the rotor with Blade A in top position.
Figure 5: View of Blade in up position
2. Ground the blade using approved and safe techniques as prescribed by the
manufacturer and/or wind farm protocols.
Before working on the LPS, ground the Blades
first.
The blade static electricity can be fatal.
3. Mark the installation date with a permanent marker (e.g. Sharpie) on the SLPS
installation label. Mark the serial number in the checklist
4. Remove lightning system Arc Receptors (i.e., the bronze tips of the “candlestick”
arm, e.g. GP096408 or any other variation) using vise grips or channel locks. If
the tips require excessive force, use two pliers on either end (counteracting each
other) to avoid damaging the white support arm.
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Figure 6:LPS Insulation cylinder(Candlestick) with the bronze Arc Receptors in highlighted
Figure 7 LPS with Arc Receptors Removed
5. Use gloves to handle the SLPS
6. With the arc receptors off, manually open the SLPS mounting bracket legs to
appropriate width to install the SLPS on the Transmission Cylinder studs (the
metal cylinder that the Arc Receptors are screwed on to). The following conditions
should be met after proper installation:
• The loop end of the SLPS must meet the Blade Root Conduction Band (the
discharge band on the blade)
• The tail end must meet the nacelle Rotor Cuff (i.e., “gutter ring”)
• With the blade and candle stick pointing up, the SLPS must be on the
generator side. That is to say the SLPS is to the right of the LPS
(“candlestick”) body when looking at it from inside the nacelle
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Figure 8: SLPS being Installed(photo taken from the Converter side)
Figure 9: SLPS in place. Pay attention to the Blade and Nacelle side drecton
7. Apply small amount of threadlocker(Loctite) and re install the Arc Receptors and
tighten with channels locks or Vise Grips. Use counter-acting force on both ends
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to avoid damaging the white support arm (i.e., the “Candlestick” white support
arm).
Figure 10: Arc Receptor. Use Thread Locker (Loctite) in the hole
Figure 11: The Arc Receptors being secured back in
8. Ensure that the SLPS conductor meets the Rotor Cuff (Gutter ring).
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Figure 12: SLPS meeting the Blade and the Rotor Cuff (Gutter ring)
9. Verify ALL 4 screws and nuts holding the LPS Insulating Arm(Candlestick Arm) to
the Base Plate are tight. (The Base Plate is the metal bracket holding the
“Candlestick” to the Blade bolts). Use 2x 10mm wrenches.
• If any screw is missing, replace with identical replacement and tighten
• If adjustment is needed use the bolts holding the LPS insulating arm to the
Base Plate to raise the support and align
• Position the insulation arm to maximise the contact of the SLPS conductors
with the Blade Root Conduction Band and the nacelle Rotor Cuff particularly
when the blade is up.
Figure 13: Support arm bolts. Verify tightness.
10. Remove grounding cables from the blade Conduction Band and unlock the rotor.
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Figure 14: Installed SLPS
11. Pinwheel the rotor to make sure the SLPS is free, allow a full rotation and verifying
that there are no burrs on the nacelle Rotor Cuff exist that could damage the
SLPS.
• It is recommended to use a file, a Dremel or a drill with a grinding wheel to
remove excessive and sharp burrs on the Rotor Cuff to prevent premature wear of
the SLPS
• Ensure that the SLPS nacelle-side tail is in contact with the Rotor Cuff. If
continuous contact throughout the circle of the rotor is not possible due to
distorted geometry of the Rotor Cuff, align the SLPS such that as much contact as
possible is maintained when the blade is up.
• With the rotor pinwheeling, listen for any cogging of the SLPS and rectify as
needed
12. Take photos of the installation.
13. Fill out the appropriate section of the Compliance Checklist.
14. Repeat for Blades B and C.
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4 Recommended Turbine Grounding Verification
√
If instructed by the Plant Manager or the Support
Engineer in charge of the plant, proceed with
this section
1. Verify that the main nacelle grounding cable, WT991A and WT991B, located under
the gearbox on the Generator side, are installed on clean surfaces.
Figure 15: Location of the grounding connection from near the Generator Coupler
2. Remove the bolts with 13mm socket and clean the surface and the lug with sand
paper and or a Dremel tool with a sanding drum. Ensure that all paint and grease
is remove and you achieve a metal to metal contact between the lug and the
frame. In absence of a Dremel tool, a drill with a grinding wheel could help the
clean up. Avoid excessive sanding and any gouging of or recess in the metal.
3. Re-install the lugs and the bolts and tighten to 20Nm
4. Apply Zinc-it or similar protection
Figure 16: Example of Bad Connection Surfaces
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5. Exit the nacelle and find the midtower grounding tabs where the cables WT991A
and WT991B terminate. (This tab is usually located above the highest deck in
G80-G90 and below the highest deck in G97. )
Figure 17: Example of a Tower grounding tap
6. If the connections appear rusty or otherwise sub standard,
• remove the lugs
• Clean the surface of the tower grounding tab
• Clean the surface of the lugs
• Apply a very thin layer of conductive grease and reconnect the grounding
cables and reinstall the bolts. If one of the designated holes on the tower
tab is obscured by the ladder support, use both sides of the tab with the
remaining holes and double up the lugs
• Coat the area with protective paint (Zinc It)
• Make sure all cables are properly supported and if needed use more zipties
to secure the cables.
AP SLPS Installation Guide For G8/G9
Art. Code D0077 Rev. 16 19/October/2018
Author Jacob Nicholas The information throughout this document is a property of Applied
Philosophy and subject to copyright and reuse restrictions
assigned Confidentiality 6 Pages 13
5 Appendix A: Installation Checklist
Date and Time
Technician Name
Wind Farm
Turbine Number
SLPS Serial Numbers A: B: C:
SLPS Installation
Step Blade A Blade B Blade C
SLPS Installed Factory LPS Arc Receptors reinstalled and tightened on both
ends with Vise-Grips
SLPS tail touching the nacelle Rotor Cuff(Gutter Ring)) SLPS loop touching the blade root conduction band (not above
or below) SLPS loop not touching the Conduction Band Bolt at 90 and 0
Degrees
LPS Insulation (White Support Arm) Screws are tight
Nacelle Grounding Improvements
Step
Nacelle grounding cable WT991A and WT991B (Under the gearbox, generator side) are
clean and retightened with conductive grease
Zinc-It sprayed on to the grounding bolt for WT991A/B after cleaning Mid-tower grounding cables (WT991A, WT991B, WT991C, WT991D (near the highest
tower service platform) are cleaned(sanded) and reinstalled with conductive grease
Zinc-It sprayed on to the grounding bolt for WT991A/B/C/D after cleaning
√
Take a photo of this checklist and each installed
SLPS with a phone and email to