NERC Vegetation Management 2

Question 1

What is the general voltage threshold above which NERC FAC-003 typically applies to transmission lines?

Accepted Answer

200 kV and above

Answer

69 kV and above

Answer

115 kV and above

Answer

345 kV and above

Question 2

What does the 'imminent threat' provision in NERC FAC-003 authorize Transmission Owners to do?

Accepted Answer

Take immediate action to remove vegetation posing an urgent risk to transmission line reliability

Answer

Bypass FERC approval to de-energize a line immediately

Answer

Issue public safety warnings without state utility commission approval

Answer

Redirect transmission flows around affected lines automatically

Question 3

Which of the following is a mandatory element of a Transmission Owner's vegetation management program under FAC-003?

Accepted Answer

An annual vegetation work plan identifying areas and methods

Answer

A certified arborist permanently on staff

Answer

A real-time remote sensor network monitoring vegetation height

Answer

A GPS-tagged inventory of every tree within the right-of-way

Question 4

Under FAC-003, what must a Transmission Owner do if planned vegetation work cannot be completed as scheduled?

Accepted Answer

Document the reason and reschedule the work as soon as practicable

Answer

File a formal exemption petition with NERC headquarters

Answer

Immediately notify FERC and request a compliance extension

Answer

De-energize the affected transmission segment until work is complete

Question 5

What vegetation management approach does NERC FAC-003 support that combines biological, mechanical, and chemical control methods for long-term effectiveness?

Accepted Answer

Integrated Vegetation Management (IVM)

Answer

Total Vegetation Elimination (TVE)

Answer

Systematic Encroachment Prevention (SEP)

Answer

Precision Right-of-Way Control (PRWC)

Question 6

In transmission right-of-way vegetation management, what is the 'wire zone'?

Accepted Answer

The area directly under and laterally adjacent to conductors where only low-growing compatible vegetation is allowed

Answer

The corridor where underground cables must be routed

Answer

The restricted airspace above transmission conductors

Answer

The buffer strip separating transmission and distribution infrastructure

Question 7

How does increasing altitude affect the Minimum Vegetation Clearance Distance (MVCD) required under FAC-003?

Accepted Answer

Higher altitude requires larger MVCDs because air at elevation has lower dielectric strength

Answer

Higher altitude allows smaller MVCDs because thinner air conducts electricity less easily

Answer

Altitude has no effect on MVCD — only conductor voltage determines the required gap

Answer

MVCD decreases above 5,000 feet due to reduced humidity levels