Deck 14: Rotor Assembly

Question 1

Steps to perfom a safe hub enty may include: review hub entry checklist, proper orientation of the rotor, and ____________.

A) don fall arrest PPE
B) apply rotor lock
C) review of weather forecast
D) All answers are correct

Answer 1

D

Question 2

Use of utility lanyards to secure tools and communication equipment to the full body harness can eliminate dropping hazards while working on the nacelle or hub.

Answer 2

True

Question 3

Work activities on top of a wind turbine nacelle or hub do not require fall arrest PPE.

Answer 3

False

Question 4

An approved LOTO procedure should be completed before entering a wind turbine hub.

Question 5

Inspection of hub control cabinets may include: tighten wire terminal connections, verify circuit componets are secure, and _________________.

A) inspect for chafed wire insulation
B) ensure cabinets are secure
C) verify circuit voltage levels
D) All answers are correct

Question 6

Rotation of the pitch bearings during lubricant appication is not recommended.

Question 7

A "permit required" confined space is defined as having only a drowning hazard.

Question 8

Local EMS should be listed as the primary rescue group for all hub emergencies.

Question 9

LOTO procedures for a hub entry may include ____________.

A) hydraulic circuits
B) power circuits
C) battery storage systems
D) All answers are correct

Question 10

Pitch bearings are used to rotate the tower assembly.

Question 11

Wind turbine pitch drive types include ____________.

A) central hydraulic actuator
B) individual hydraulic actuators
C) electric motor drive units
D) All answers are correct

Question 12

Inspection of hub mounting hardware for cabinets, lighting, and cables is vital to ensure they do not come loose during normal operation of the wind turbine.

Question 13

Inspection and maintenance of pitch drive systems may include: verify gear oil level, torque inspection of drive mounting fasteners, and __________.

A) remove ice from the met mast
B) replace hub access seals
C) battery impedance and voltage test
D) All answers are correct

Question 14

Maintenance activities within the hub assembly may include activation or verification of the emergency pitch system.

Question 15

Major components of the rotor assembly include the hub, spinner, and blades.