Deck 10: Tower

Question 1

Impact grade sockets should always be used with power bolting tools.

Answer 1

True

Question 2

Utility size wind turbine tower designs have generally been self-supporting lattice or tube.

Answer 2

True

Question 3

Components listed on a tower inspection and maintenance checklist may include: cables, mounting hardware, ladder safety equipment, and ___________.

A) tower lighting
B) GFCI receptacles
C) access hatches
D) All answers are correct

Answer 3

D

Question 4

An acceptable sequence for tightening fasteners around a circle is called a __________.

A) star pattern
B) moon pattern
C) cross pattern
D) None of the answers are correct

Question 5

Accidents involving power bolting tools may include: crush, pinch, and _______.

A) injection
B) amputation
C) burns
D) All answers are correct

Question 6

All cables running up the tower are used for electrical power transfer to the utility interconnection.

Question 7

Drip loop refers to the accumulation of cable located immediately above the yaw deck.

Question 8

Typical ladder safety systems include a vertical life line cable assembly and ________.

A) bungee cord
B) rail system
C) number ten noodle
D) All answers are correct

Question 9

Thermal imaging of cable bundles during operation or immediately after shut down would be a good means to determine a cable splice or termination problem.

Question 10

Contamination of the power cable insulating jacket with lubricating oil will never cause damage to the cable.

Question 11

Inspection of the ladder assembly, decks, and access hatches is not necessary during any maintenance activity.

Question 12

Bolts retaining the tube tower sections should be inspected for torque level every semi-annual preventative maintenance cycle.

Question 13

Inspection items for cables may include: nicks, abrassion, and _________.

A) oil contamination
B) cuts
C) missing insulation
D) All answers are correct

Question 14

An inspection of cable bundles running up the tower assembly should always include: mounting hardware, insulation damage, and weight.

Question 15

Using a paint pen to mark the final position of a nut after a torque inspection is a good means to determine if the nut loosens between maintenance cycles.