636 Emergency Shutdown (66-EOP-5001)

Question 1

CCR - 1.1.1 - NOTIFY Asset Team Shift Supervisor (Shift FLS) that 636 Unit will be Shutdown due to Emergency Conditions

Answer 1

CCR - 1.1.2 - ANNOUNCE: “All Maintenance, Contract personnel and other non-essential personnel, clear the 636 Unit and adjacent Units within a 300-foot radius for Emergency Shutdown.”

Question 2

OPER - 1.1.3 - ENSURE Non-essential Personnel have cleared the 636 unit and adjacent Units within a 300-foot radius

Answer 2

CCR - 1.1.4 - DIVERT feed from 636 Unit in accordance with Standing Orders

Question 3

OPER - 1.1.5 - SHUTDOWN Charge Pumps (636P0001A/B)

Answer 3

OPER - 1.1.6 - VERIFY that the 66XV5101 and 66XV5102 Feed Chopper valves are closed

Question 4

OPER - 1.1.7 - OPEN the 4” H2 Sweep line

Answer 4

CCR - 1.1.8 - OPEN Heater pass Feed Control Valves (66FV0009, 66FV0010, 66FV0011 and 66FV0012).

• ENSURE 66HS0069A is engaged

Question 5

CCR - 1.1.9 - BLOW DOWN each pass on 636F0001, Reactor Feed Heater, by performing the following:

A - PLACE 3 of the 4 Heater Pass Feed Control Valves (66FV0009, 66FV0010, 66FV0011, and 66FV0012) in manual to approximately 10%

Answer 5

B - BLOW DOWN the pass for a minimum of 15 minutes with Hydrogen flow from running compressor

Question 6

C - OPEN 1 of the 3 isolated pass control valves and close the previously open pass control valve to approximately 10% at end of blow-down time period

Answer 6

D - REPEAT for other 3 passes

Question 7

E - ONCE the sweep is complete,
OPEN all 4 of the heater pass control valves for an additional hour

Answer 7

OPER - 1.1.10 - CLOSE the 4” H2 Sweep line

Question 8

CCR - 1.1.11 - CLOSE all 4 of the heater pass control valves

Answer 8

OPER - 1.1.12 - ENSURE that the 634C00002 Compressor seals are in 634 service

Question 9

OPER - 1.1.13 - ENSURE that 64PC00039, Hydrogen to 735 is aligned to send 634 Hydrogen to 735 and isolated form the 636 Hydrogen.

Answer 9

CCR - 1.1.14 - PLACE 66FV0072 H2 to 634 controller in Manual and CLOSE

Question 10

OPER - 1.1.15 - UNLOAD either 636C000022A or B Compressor and shut it down

Answer 10

CCR - 1.1.16 - MAINTAIN purge with one Makeup compressor and the Recycle Gas Compressor (636C0001), until remaining Feed is removed from unit, as indicated by Hot Seperator Level Indicator (66LI0003A) indications are Stable

Question 11

CCR - 1.1.17 - PLACE Stripping Steam Flow Controller for the Stripper (66FC0035) and Fractionator (66FC0051) in Manual and Close

Answer 11

OPER - 1.1.147 - SHUTDOWN Stripper Bottoms Pumps (636P0006A/B) when the discharge pressure on Stripper Bottoms, Pump is decreasing, as indicated by local indicators (66PI0119/20)

Question 12

CCR - 1.1.19 - REDUCE temperature setpoint on Charge heater Outlet Temperature Controller (66TC0016), to 300 degrees F at a rate of 150 degrees F per hour, or as directed by Ref Tech

Answer 12

CCR - 1.1.20 - PLACE the following Controllers in manual and Close:

Question 13

• Stripper Level Controller (66LC0014)

Answer 13

• Fractionator Charge Heater Tube No. 1 Flow Controller (66FC0049A)

Question 14

• Fractionator Charge Heater Tube No. 2 Flow Controller (66FC004B)

Answer 14

• Fractionator Charge Heater Tube No. 3 Flow Controller (66FC0049C)

Question 15

CCR - 1.1.21 - PLACE Fractionator Charge Heater Tube No. 4 Flow Controller (66FC0049D), in Manual and OPEN

Answer 15

OPER - 1.1.22 - CLOSE the 636P0006A/B, Stripper Bottoms Pumps discharge valves

Question 16

OPER - 1.1.23 - OPEN 4” valve on Medium Pressure Steam line to Stripper Bottoms Pump (636P0006A/B), Discharge line to purge through Stripper Feed Bottom Exchangers (636E0011A-F) and Product Fractionator Charger Heater (636F0002)

Answer 16

CCR - 1.1.24 - OPEN Fractionator Charge heater Tube No. 3 Flow Controller (66F0049C)

Question 17

CCR - 1.1.25 - CLOSE Fractionator Charge heater Tube No. 4 Flow Controller (66FC0049D)

Answer 17

CCR/OPER - 1.1.26 - REPEAT Step1.1.24 through Step 1.1.25 for the following Fractionator Charge Heater Tubes:

• No. 2 Flow Controller (66FC0049B)
• No. 1 Flow Controller (66FC0049A)

Question 18

OPER - 1.1.27 - CLOSE 4” valve on Medium Pressure steam line to Stripper Bottoms Pump Discharge line

Answer 18

CCR - 1.1.28 - OPEN the following Tube Flow Controllers on Fractionator Charge Heater

• No. 2 (66FC0049B)
• No. 3 (66FC0049C)
• No. 4 (66FC0049D)

Question 19

CCR/OPER - 1.1.29 - REMOVE the Fractionator from service per HDSC-SOP-2012, Fractionator Operation/Maintenance Preparation procedure

Answer 19

OPER - 1.1.30 - SHUTDOWN compressors when Outlet temperature on Reactor (636R0001), is equal to or less than300 degrees F, as indicated by Reactor Outlet Temperature Indicator (66TI0088)

Question 20

1.2 Complete Supplemental Actions