HDSO - High Hydrogen Sulfide in the Fuel Gas

Question 1

1.1 IMMEDIATE ACTIONS

Oper 1.1.1 - TEST the following units for Hydrogen Sulfide with Dragger Tester to determine if there is a source of Hydrogen Sulfide:

Answer 1

• 630 HDS Unit ___ Hydrogen Sulfide PPM
• 631 HDS Unit ___ Hydrogen Sulfide PPM
• 632 HDS Unit ___ Hydrogen Sulfide PPM

Question 2

CCR 1.1.2 - IF source of Hydrogen Sulfide is DETERMNINED, INCREASE flow rate of Lean Amine to Amine Contactor (630T0003, 632T0002), to reduce Hydrogen Sulfide in recycle gas to less than an average of 160 ppm over 3 hours.

Answer 2

CCR/Oper 1.1.3 - ENSURE level in Amine Contactors is ~50%, as indicated by Level Transmitter (630LT0012) (632LT0214).

Question 3

CCR/Oper 1.1.4 - ENSURE differential temperature between Lean Amine and process stream is greater than 10°F to prevent foaming in Contactor.

Answer 3

1.2 SUPPLEMENTAL ACTIONS

CCR/Oper 1.2.1 - NOTIFY the following of high Hydrogen Sulfide in Fuel Gas:

Question 4

*Shift Supervisor
*Sulfur Recovery Complex
*Fuel Department

Answer 4

THIS IS THE END OF THE PROCEDURE