reasons for pay raise

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All crews were led by me with the exception of ground support work for the blade removal Eos Level 4 I passed the class and received my level 4 clearance within 3 months of being employed by Dewind Toubleshooting I have led troubleshooting crews to troubleshoot various status codes and faults including ethercat faults, bus coupler faults, excessive vibration, etc. Spinner Bracket and ladder retros (20 Towers) I spent 3 months removing broken spinner brackets and ladders from the Frisco and Little Pringle 8.2 Turbines and replaced them with Retro fit ladders and spinner brackets to correct the issue of ladders and brackets breaking while the turbine was in operation. I lead a crew of two and was the only crew performing these retro fits with the exception of a few towers. Worked involved fiberglass grinding and drilling of new mounting holes in the fiberglass hub and nosecone. 80 pound ladders were hoisted and lowered by technicians and placed in the old ladder’s location. Ladders were mounted with 19mm head bolts, 24mm head bolts, and 36mm head bolts. Spinner brackets were replaced with reworked brackets and reinforced by additional supports that were drilled and mounted between the hub and the spinner. When completed I also Inspected the towers to ensure that these retrofits were performing to expectations. As of now no towers have failed for faulty work. Accumulator bracket retros I helped install accumulator bracket NCRs in numerous towers, at times completing two towers in a day. Many teams were assigned to address this issue and I was a part of it. The work involves removing broken bolts from the accumulator frame located inside

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Page 1: Reasons for pay raise

All crews were led by me with the exception of ground support work for the blade removal

Eos Level 4

I passed the class and received my level 4 clearance within 3 months of being employed by Dewind

Toubleshooting

I have led troubleshooting crews to troubleshoot various status codes and faults including ethercat faults, bus coupler faults, excessive vibration, etc.

Spinner Bracket and ladder retros (20 Towers)

I spent 3 months removing broken spinner brackets and ladders from the Frisco and Little Pringle 8.2 Turbines and replaced them with Retro fit ladders and spinner brackets to correct the issue of ladders and brackets breaking while the turbine was in operation. I lead a crew of two and was the only crew performing these retro fits with the exception of a few towers. Worked involved fiberglass grinding and drilling of new mounting holes in the fiberglass hub and nosecone. 80 pound ladders were hoisted and lowered by technicians and placed in the old ladder’s location. Ladders were mounted with 19mm head bolts, 24mm head bolts, and 36mm head bolts. Spinner brackets were replaced with reworked brackets and reinforced by additional supports that were drilled and mounted between the hub and the spinner. When completed I also Inspected the towers to ensure that these retrofits were performing to expectations. As of now no towers have failed for faulty work.

Accumulator bracket retros

I helped install accumulator bracket NCRs in numerous towers, at times completing two towers in a day. Many teams were assigned to address this issue and I was a part of it. The work involves removing broken bolts from the accumulator frame located inside the hub. The frame must be lifted and the old bolts removed and replaced by NCR bolts provided by engineering.

Fan NCRs

I assisted in the instillation of Fan NCRs in the 9.2 turbines. This involved cutting a hole in the roof, mounting and installing the fan, wiring and mounting new circuit breakers, thermostats, and wiring the circuit together. The fans have helped keep ambient temperature of the nacelle down.

Annual maintenances

I have lead many crews in the annual maintenance of different towers including both 9.2 and 8.2 turbines. This involved replacing filters, filling grease auto lubers, greasing the bearings, refilling

Page 2: Reasons for pay raise

accumulators with nitrogen, torqueing towers, tensioning blades and bearings, checking and fixing leaks, replacing yaw hoses, replacing yaw brake pads, replacing high speed brake shaft pads, blade inspections, and cleaning of the tower from top to bottom.

Accumulator Bladder Replacements

The 8.2 turbines have a problem with bladders in the safety accumulators located within the blades getting punctured and blown out. I have replaced many bladders in these accumulators which involves lifting the accumulator and removing it from the pitch block. A vacuum is used to mediate oil spill from the accumulator and prevent it from spilling out the tower. The neck of the accumulator is removed and pulled out to allow access to the bladder locate within the accumulator. The bladder is then removed and slipped out the bottom and a new bladder is slipped into the accumulator. Parts are then reassembled and the accumulator is lowered on the block. Nitrogen is then chargers the bladder and the system can be recharged with hydraulic oil.

Ground support for blade removal

N1 T36 recently had a blade break in half. I was a part of the ground support crew that aided the removal crew by bring up tools if needed, helping direct crane crews for lifting ops, and I aided in tensioning the new blades onto the hub when I was finally ground side.

Hydraulic line replacement through gear box to hub

This work had to be done because the hydraulic lines that run from the rotating union through the gearbox and into the hub were leaking. Removal of the slip ring, encoders, rotating union and its incoming and outgoing lines, ethercat cable, 480V power supply cable to the hub, and preexisting hydraulic lines and guide pipes was necessary. Connections in the hub were removed as well as termination points for the ethercat cable and 480V power cable. New hydraulic lines were introduced and the system was put back together. A few towers required this work

Lightning protection replacement

8.2 towers have a lot of issues of faulty lightning protection. Pieces are missing or broken due in part to faulty spinner brackets. Broken spinner brackets destroy the lightning protection. I have replaced lightning rings, aluminum lines running from blade brushes to lightning ring, brushes and brush blocks, and mounting hardware for the aluminum lines.

High Voltage Training

I received high voltage training which allows me to safely switch pad mount transformers and switch substation relays

No Comms

Page 3: Reasons for pay raise

I have troubleshot communication issues within the LP park. Work often includes cabinet resets at the substation and at the tower themselves. Often when scada communication is returned, all towers must be reset and brought back online. I have done this several times

Grid Power Loss to turbines

I have returned grid power to the N2 park and brought towers online. This involved running to each tower to ensure viper switch gear was opened before re-energizing the grid. Then feeders at the substation had to be closed to re-energize the grid supplying the Novus 2 park. Once power was returned I and my partner had to make a trip to each tower and return scada communication and reset the turbine.

Viper Replacement

The 9.2 towers have had issues with the viper switchgear within the basement of the tower. I have been involved in dissembling the old switchgear and replacing it with new viper switchgear. This involved removing the floor of the tower and hoisting the old viper out and lowering the new viper in. Reassembly of the floor and the viper completed the project.

Brake Pad replacement

Yaw brake pad replacements and yaw hose replacements. HS brake caliper pad replacements

Generator brush replacement and diode replacement