Troubleshooting the System

Question 1

What are the possible causes of high sulfur content in the 634 HDS product (FCCU Feed)?

Answer 1

1. High Sulfure content in the feed
2. Leaking heat exchangers
3. A reactor temperature that is too cold
4. Reduced catalyst activity
5. Low unit pressure
6. Impure hydrogen

Question 2

What is a proper response if a high level in the Amine Contactor is the result of a problem with the reich amine level control valve?

Answer 2

1. Check control valve for proper operation
2. Open the bypass to reestablish the level
3. Notify the instrument Department

Question 3

If hot tubes in the Reactor Feed Heater is caused by a low flow through one of the Furnace passes, what is the proper response?

Answer 3

Balance the flow equally by adjusting the temperature between muliple passes

Question 4

Excessive smoke in the Reactor Feed Heater stack can be caused by an increased fuel rate without the appropriate ____________ ___________ or leaking or ruptured tubes.

Answer 4

Oxygen Level

Question 5

What is the proper response if a compressor shutdown is caused by Low lube oil flow or pressure?

Answer 5

Operator should verify the lube oil pump operation