NACE CP2 COMPREHENSIVE ANSWERS AND
QUESTIONS SURE A+
✔✔an electronegative peak in potentials along a cathodically protected pipeline may be
indicative of
a. anodic interference
b. cathodic interference
c. shorted road casing
d. current discharge - ✔✔a. anodic interference
✔✔analysis of dynamic stray current does NOT typically include the evaluation of
A. soil resistivity
B. the interaction of voltages between different structures
C. measuring of current on the structure
D. correlation of current and voltages on different structures and - ✔✔A. soil resistivity
✔✔With current (and direction) measured at adjacent spans on a pipeline, which
condition indicates a current discharge (Location A is left of Location B
A. Location A= 2.0 A (left) Location B= 1.0A (right)
B. Location A= 2.0 A (right) Location B= 1.0 A (left)
C. Location A= 1.0 A (left) Location B= 1.0 A (left)
D. Location A = 1.0 A (right) Location B= 2.0 A (right) - ✔✔B. Location A= 2.0 A (right)
Location B= 1.0 A (left)
✔✔Recommended methods of mitigating cathodic interference from another cathodic
protection system include which of the following?
I. Drainage control bond
II. cathodic protection
III.Coating the current discharge area
IV. Reduce source of stray current - ✔✔I, II, and IV ??
, ✔✔A complete cathodic protection system monitoring program consists of which of the
following?
A. Detailed survey only
B. Routine readings between surveys only
C. Detailed survey and routine readings between surveys
D. Soil resistivity surveys - ✔✔C. Detailed survey and routine readings between surveys
✔✔Proper operation of a rectifier can be confirmed by which of the following?
I. DC current output
II. DC voltage output
III. tap setting
IV. Potential at a control point - ✔✔all of the above ???
✔✔a short to bare structure will most likely cause which of the following?
I. A decrease in the current output of the anode.
II. An electropositive change in the pipe-to-electrolyte potential
III. an increase in the current output of the anode
IV. An electronegative change in the pipe-to-electrolyte potential.. - ✔✔II only
✔✔Which of the following regulations require inspection of an interference control
drainage bond?
I. DOT 49 CFR 192
II. DOT 49 CFR 195
III. CSA Z662
IV. ISO 15589-1 - ✔✔All of the above ???
✔✔Reasons for keeping records include which of the following?
I. Legal Defense
II. Government regulations
III. Historical references
IV. Possible future ECDA assessment - ✔✔All of the above
✔✔Which of the following items must be included in recording structure-to-electrolyte
potentials on routine surveys?
I. Value
II. Units
III. Polarity
IV. Reference Electrode - ✔✔All of the above
QUESTIONS SURE A+
✔✔an electronegative peak in potentials along a cathodically protected pipeline may be
indicative of
a. anodic interference
b. cathodic interference
c. shorted road casing
d. current discharge - ✔✔a. anodic interference
✔✔analysis of dynamic stray current does NOT typically include the evaluation of
A. soil resistivity
B. the interaction of voltages between different structures
C. measuring of current on the structure
D. correlation of current and voltages on different structures and - ✔✔A. soil resistivity
✔✔With current (and direction) measured at adjacent spans on a pipeline, which
condition indicates a current discharge (Location A is left of Location B
A. Location A= 2.0 A (left) Location B= 1.0A (right)
B. Location A= 2.0 A (right) Location B= 1.0 A (left)
C. Location A= 1.0 A (left) Location B= 1.0 A (left)
D. Location A = 1.0 A (right) Location B= 2.0 A (right) - ✔✔B. Location A= 2.0 A (right)
Location B= 1.0 A (left)
✔✔Recommended methods of mitigating cathodic interference from another cathodic
protection system include which of the following?
I. Drainage control bond
II. cathodic protection
III.Coating the current discharge area
IV. Reduce source of stray current - ✔✔I, II, and IV ??
, ✔✔A complete cathodic protection system monitoring program consists of which of the
following?
A. Detailed survey only
B. Routine readings between surveys only
C. Detailed survey and routine readings between surveys
D. Soil resistivity surveys - ✔✔C. Detailed survey and routine readings between surveys
✔✔Proper operation of a rectifier can be confirmed by which of the following?
I. DC current output
II. DC voltage output
III. tap setting
IV. Potential at a control point - ✔✔all of the above ???
✔✔a short to bare structure will most likely cause which of the following?
I. A decrease in the current output of the anode.
II. An electropositive change in the pipe-to-electrolyte potential
III. an increase in the current output of the anode
IV. An electronegative change in the pipe-to-electrolyte potential.. - ✔✔II only
✔✔Which of the following regulations require inspection of an interference control
drainage bond?
I. DOT 49 CFR 192
II. DOT 49 CFR 195
III. CSA Z662
IV. ISO 15589-1 - ✔✔All of the above ???
✔✔Reasons for keeping records include which of the following?
I. Legal Defense
II. Government regulations
III. Historical references
IV. Possible future ECDA assessment - ✔✔All of the above
✔✔Which of the following items must be included in recording structure-to-electrolyte
potentials on routine surveys?
I. Value
II. Units
III. Polarity
IV. Reference Electrode - ✔✔All of the above
