IFIA SECTION 7 - TANK GAUGING
questions correctly answered to pass
What is commonly meant by the term 'dip'?
a. Ullage
b. Innage
c. Free water measurement
d. Swing gauge - correct answer ✔✔B
What occurs when a shore tank is filled to a level
in the 'critical zone'?
a. The flexing bottom of a tank is at its highest point
b. The tank will overflow if more liquid is added
c. The floating roof is no longer resting on its legs
d. The floating roof is only partially afloat and the
capacity table may be inaccurate - correct answer ✔✔D
A 'tank capacity table' is also referred to as a 'tank
strapping table'.
a. True
b. False - correct answer ✔✔A
What is a 'master tape'?
a. The only tape that may be used to take custody
transfer measurements
b. A tape belonging to the National Certification Body
c. A tape to be used only for tank calibration
,d. A reference tape, traceable to National Standards to
be used only for verifying the accuracy of tapes used
in the field - correct answer ✔✔D
What does an innage/sounding measure?
a. The distance from the surface of the liquid in the tank
to the reference gauge point of the tank.
b. The distance between the point where the floating
roof of the tank is floating freely and the point where it
is resting fully on it's supports.
c. The level of liquid in a tank measured from the datum
plate or tank bottom to the surface of the liquid.
d. The distance from the tank datum plate or bottom to
the tank reference gauge point. - correct answer ✔✔C
What does an outage/ullage measure?
a. The distance from the tank datum plate or bottom to
the tank reference point.
b. The distance from the surface of a liquid in a tank to
the reference gauge point of the tank.
c. The amount of product transferred out from a tank.
d. The level of liquid in a tank measured from the tank
bottom to the surface of the liquid. - correct answer ✔✔B
What is water finding paste used for?
a. To determine the S&W of the product in the tank
b. To detect the presence of suspended water within the
product in the tank
c. To indicate the product / free water interface within
, the tank
d. Answers a., b. and c. are all wrong - correct answer ✔✔C
An innage gauge bob is pointed to aid in
penetration of tank non-liquid. Where is its zero
point?
a. Top of the eye
b. Bottom of the eye
c. Tip of the bob
d. Inside of the tape swivel - correct answer ✔✔C
What is the observed gauge height of a tank?
a. The distance from the reference gauge point to the
bottom of the tank or the datum plate as measured
during the gauging operation
b. The distance from the reference gauge point to the
bottom of the tank or the datum plate as shown on
the tank capacity tables
c. The distance from the ullage pipe to the liquid level
d. Usually written somewhere on the ullage pipe - correct answer ✔✔A
What is innage or dip?
a. The distance from the datum plate or the tank bottom
to the surface of the product
b. The measurement from the tank bottom to reference
point
c. The cut found on the bob
d. The distance from the reference point to surface of
the product - correct answer ✔✔A
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