Question 1

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

Accepted Answer

Impact grade sockets are specifically designed to handle the high torque and force generated by power bolting tools, making it important to use them in order to prevent damage to both the tool and the socket. Using a regular socket can also be dangerous as it may shatter or break under the pressure, potentially causing injury to the user.

Question 2

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

Accepted Answer

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

Question 3

Components listed on a tower inspection and maintenance checklist may include: cables, mounting hardware, ladder safety equipment, and ___________.&#10;A) tower lighting&#10;B) GFCI receptacles&#10;C) access hatches&#10;D) All answers are correct

Accepted Answer

All of the listed components (cables, mounting hardware, ladder safety equipment, tower lighting, GFCI receptacles, and access hatches) should be included on a tower inspection and maintenance checklist to ensure a thorough and safe inspection.

Question 4

An acceptable sequence for tightening fasteners around a circle is called a __________.&#10;A) star pattern&#10;B) moon pattern&#10;C) cross pattern&#10;D) None of the answers are correct

Accepted Answer

A star pattern is the best sequence for tightening fasteners around a circle because it ensures even distribution of torque and prevents distortion or warping of the object being fastened.

Question 5

Accidents involving power bolting tools may include: crush, pinch, and _______.&#10;A) injection&#10;B) amputation&#10;C) burns&#10;D) All answers are correct

Accepted Answer

Accidents involving power bolting tools can lead to crush injuries from the force of the tool, pinch injuries from getting caught in the tool, amputations if body parts come into contact with the tool, and injection injuries if hydraulic fluid or other materials are forced into the skin. Burns may also occur if the tool or materials being worked on are hot. Therefore, all answer choices are correct.

Question 6

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

Accepted Answer

Not all cables running up a tower, especially in the context of wind turbines, are used for electrical power transfer to the utility interconnection. Some cables are used for data communication, monitoring, and control systems within the turbine.

Question 7

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

Accepted Answer

A drip loop is a loop formed in a cable to prevent water from traveling along the cable and into electrical equipment or connections. It does not refer to the accumulation of cable above the yaw deck.

Question 8

Typical ladder safety systems include a vertical life line cable assembly and ________.&#10;A) bungee cord&#10;B) rail system&#10;C) number ten noodle&#10;D) All answers are correct

Accepted Answer

A rail system is the most common and recommended ladder safety system, as it provides continuous fall protection and is easy to use. A vertical life line cable assembly is also commonly used, but may be more complicated to set up and use properly. Bungee cords and number ten noodles are not appropriate or safe choices for ladder safety systems.

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.

Accepted Answer

Thermal imaging can detect anomalies in temperature caused by poor connections, damaged insulation, or other issues in cable splices or terminations. It can be done during operation or shortly after shutdown to identify any potential problems in cable bundles.

Question 10

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

Accepted Answer

Contamination of the power cable insulating jacket with lubricating oil can cause damage to the cable by reducing the effectiveness of the insulation and increasing the risk of electrical faults or breakdowns.

Question 11

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

Accepted Answer

The answer of Inspection of the ladder assembly, decks, and...

Question 12

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

Accepted Answer

The answer of Bolts retaining the tube tower sections should...

Question 13

Inspection items for cables may include: nicks, abrassion, and _________.&#10;A) oil contamination&#10;B) cuts&#10;C) missing insulation&#10;D) All answers are correct

Accepted Answer

The answer of Inspection items for cables may include: nicks,...

Question 14

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

Accepted Answer

The answer of An inspection of cable bundles running up...

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.

Accepted Answer

The answer of Using a paint pen to mark the...

Deck 10: Tower