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In the feed (flash) drum, the water and any glycol carried in from the field is:

A - Recovered and used to provide fuel to the fired heaters B - Condensed and sent to the reboiler C - Cooled and partially condensed in the stabilizer overhead condenser D - Dropped out and collected in the water leg at the bottom of the tank Correctness Rule: Single Correct Answer Required Answer(s) Given: D Correct Answer(s): D Marked as: Correct Question 1:

The stabilizer overhead condenser:

A - Prevents hydrates in the tower B - Cools the vapour from the top of the tower C - Provides sufficient holding time to settle the flow surges from the inlet separators D - Recovers heat from the overhead product and transfers it to the stabilizer feed Correctness Rule: Single Correct Answer Required Answer(s) Given: B Correct Answer(s): B Marked as: Correct _______________________________________________

Question 2:

Analysis of the stabilizer bottoms product being sent to storage is found to have significant C3 and C4 components. This will be due to:

A - Operating the tower below design pressure B - Operating the reboiler below design pressure C - Operating the reboiler below design temperature D - Operating the tower without reflux Correctness Rule: Single Correct Answer Required Answer(s) Given: C Correct Answer(s): C Marked as: Correct _______________________________________________

Question 3:

The chamber arrangement at the lower section of the stabilizer prevents the:

A - Increase of suction at the reboiler pump B - Liquid surge point from exceeding design maximum C - Loss of suction at the reboiler pump D - Formation of hydrates Correctness Rule: Single Correct Answer Required Answer(s) Given: C Correct Answer(s): C Marked as: Correct _______________________________________________

Question 4:

The stabilizer reboiler provides the stabilization tower with:

A - Heat B - Vapour removal capabilities C - Process bottom heat exchange D - Reflux Correctness Rule: Single Correct Answer Required Answer(s) Given: A Correct Answer(s): A Marked as: Correct _______________________________________________

Question 5:

The liquid separated in the reflux accumulator is:

A - Used to pre-heat raw condensate prior to entering the tower B - Pumped back to the top of the stabilizer tower C - Pumped back to the stabilizer feed drum D - Recovered and used to provide fuel for the fired heater. Correctness Rule: Single Correct Answer Required Answer(s) Given: B Correct Answer(s): B Marked as: Correct _______________________________________________

Question 6:

The purpose of the condensate stabilizer is to remove light hydrocarbons allowing the safe _______________ of the natural gasoline.

A - Sale B - Storage C - Processing D - Fractionization Correctness Rule: Single Correct Answer Required Answer(s) Given: B Correct Answer(s): B Marked as: Correct _______________________________________________

Question 7:

A condensate stabilizer tower is divided into sections. The top, or "rectifying section", includes:

A - All the trays above the feed tray B - All the trays below the chimney tray C - All the trays above the reflux tray D - All the trays below the feed tray Correctness Rule: Single Correct Answer Required Answer(s) Given: A Correct Answer(s): A Marked as: Correct _______________________________________________

Question 8:

Reflux is that part of the liquid product from the overhead condenser, which is returned to the top of the stabilizer and controls the:

A - Bottom product temperature and purity B - Overhead pressure and purity C - Surge rate within the condenser D - Overhead temperature and purity Correctness Rule: Single Correct Answer Required Answer(s) Given: D Correct Answer(s): D Marked as: Correct _______________________________________________

Question 9:

The most significant stabilizer tower process variable is the tower bottom temperature which:

A - Indirectly controls the tower pressure B - Directly controls the pressure in the reflux accumulator C - Indirectly controls the back pressure on the reboiler. D - Directly controls the back pressure on the reboiler Correctness Rule: Single Correct Answer Required Answer(s) Given: A Correct Answer(s): A Marked as: Correct _______________________________________________

Question 10:

The purpose of the Stabilizer Feed/Bottoms exchanger is to:

A - Prevent hydrates in the tower B - Recover heat from bottoms products C - Pre-heat raw condensate prior to entering the tower D - Flash water from the raw condensate E - Recover heat from bottoms products & Pre-heat raw condensate prior to entering the tower Correctness Rule: Single Correct Answer Required Answer(s) Given: E Correct Answer(s): E Marked as: Correct Question 1:

The stabilizer feed drum is designed to provide sufficient holding time to settle the flow surges from the inlet separators and to give adequate:

A - Space, time, and means for the counter-current contact between the ascending vapour and descending liquids B - Surge space for the bottom product pumps C - Settling time for the water wash desalting operation D - Space, time, and means for the counter-current contact between the descending vapour and ascending liquids Correctness Rule: Single Correct Answer Required Answer(s) Given: C Correct Answer(s): C Marked as: Correct _______________________________________________

Question 2:

The purpose of the stabilizer overhead condenser is to remove _______________ from the vapour stream.

A - C5, C6, and C7+ B - C1, C2, C3, and C4 C - Acid gases D - Water vapour Correct Answer(s): A Marked as: Incorrect _______________________________________________

Question 3:

A condensate stabilizer tower is divided into sections. The top, or "rectifying section", includes:

A - All the trays below the feed tray B - All the trays above the reflux tray C - All the trays below the chimney tray D - All the trays above the feed tray Correctness Rule: Single Correct Answer Required Answer(s) Given: D Correct Answer(s): D Marked as: Correct _______________________________________________

Question 4:

The overhead vapours from the reflux drum are preheated to prevent formation of:

A - Hydrates B - Bottom product C - Flare gases D - Condensate Correctness Rule: Single Correct Answer Required Answer(s) Given: A Correct Answer(s): A Marked as: Correct _______________________________________________

Question 5:

The liquid separated in the reflux accumulator is:

A - Pumped back to the top of the stabilizer tower B - Used to pre-heat raw condensate prior to entering the tower C - Pumped back to the stabilizer feed drum D - Recovered and used to provide fuel for the fired heater. Correctness Rule: Single Correct Answer Required Answer(s) Given: A Correct Answer(s): A Marked as: Correct _______________________________________________

Question 6:

Water has been found in the Stabilizer Reflux Drum. This may be due to:

A - Liquid slug into the Inlet Separator B - Operating the stabilizer reboiler above design temperature C - Malfunctioning Level Controller on the boot of the Stabilizer Feed Drum D - A hydrate in the Overhead vapour line to the L.P. contactor Correct Answer(s): C Marked as: Incorrect _______________________________________________

Question 7:

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