Revision : ??

: Hydrocarbon Inventory for Fractionation : 14 9

: Satinee Y : - : PDH Production DM. 1.0 : 15.07.11

1.01.11.2 2.02.1 Fractionation Section3.0

3.1 Appendix 1 Moisture Freeing for Fractionation System

3.2 Appendix 2 Feed Guard Bed Line Up

3.3 Appendix 3 Feed Drier V-1002A Line Up

3.4 Appendix 4 Deethanizer Hydrocarbon Inventory Line Up4.0

SHP = Huels Selective Dehydrogenation

LP = Low Pressure Steam

HPC = Heat Pump Compressor

PSV = Pressure Safety Valve5.0 (Hydrocarbon Inventorying)

() Feed Fractionation systems condition operate design ( PP-Splitter )

5.1 Feed Guard Beds (V-1001A/B)

FGB Blank 7 kg/cm2G Leak test, Moisture and Air freeing Vessel Work Instruction

1. Line up step moisture free procedure Moisture freeing for fractionation system, Appendix 1 Inlet/Outlet block valves vent valves Keep N2 pressure of 4 kg/cm2G in the beds before introducing liquid propane to reduce propane flashing.

2. Close the 6" block valves V-10013 and V-10023 (x2) on the crossover piping (1000-P-0105-6-T2A1-NI & 1000-P-0106-6-T2A1-NI) between the Feed Guard Beds. Close the inlet block valves to both guard beds. Also ensure that the manual 6" block valves on the outlet of each Feed Guard Bed are closed. Ensure the valves to SN1001 and SN1004 are closed.

3. 10-UZV-101 HS-101A block valve (V-10044) V-1001A bypass (V-10042) pressure 20-25 kg/cm2G filling valve Open 10-UZV-101 by engaging switch HS-101A. Open one 6 block valve at the inlet of (Feed Guard Bed V-1001A) i.e. V-10044. Slowly open the " filling line V-10042. Pressure the vessels up to 20~25 kg/cm2 (g) with propane, then close the " valve.

4. Check all of the flange connections, including thermowells and instrument connections, in the Feed Guard Bed system for leaks using a portable hydrocarbon analyzer. Valve stems should also be checked to ensure the packing glands are not leaking.

5. depressurize V-1001A 12-15 kg/cm2G bypass PSV-1001A (V-10006 V-10007) ** depressurize pressure boil propane re-pressure Slowly depressurize V-1001A to 12~15 kg/cm (g) using the 1 bypass around PSV-1001A.

Note- Pressure will stabilize when its at vapor pressure. When pressure gets down to vapor pressure, dont wait to let the propane boil off, just re-pressure.

6. re-pressure back 20-25 kg/cm2G filling line (V-10042) depressurize 12-15 kg/cm2G ** downstream valve vent flare Re-pressure the vessel back to 20~25 kg/cm2(g) through the " filling line around the inlet block valve, and depressurize to about 12~15 kg/cm2(g) again. Repeat until all nitrogen is removed from the vessel. Complete nitrogen removal is indicated when liquid is seen in the sight flow indicators or frosting is observed in the downstream piping, indicating it is liquid full.

7. re-pressure 20-25 kg/cm2G V-10025 cross over line 1000-P-0106-6 After all nitrogen is removed, pressure the Feed Guard Bed V-1001A to 20~25 kg/cm2 (g). Close V-10025 on cross over line 1000-P-0106-6.

8. 2-5 inventory propane V-1002B Repeat Steps to inventory V-1002B with hydrocarbon.

9. cross over line (1000-P-0106-6-T2A1-NI) fill propane filling line 6 block valve (V-10025) 5-10 connect bleed valve flare header bleed valve (V-10026) vent N2 ** bleed valve vent Liquid Propane There may still be nitrogen in the switchover lines. The nitrogen must be removed from these lines, one at a time. Open the two 6" block valve on switchover line 1000-P-0105-6-T2A1-NI for a few seconds and close. Now open the drain valve between these block valves. Also fill with propane via the " filling line around the inlet block valve. Continue filling until either the sight glass indicates flow or the vent valve begins frosting, indicating it is liquid full.

10. step 7 2-3 (1000-P-0105-6-T2A1-NI) cross over line Repeat this step a few times till the drain valve show signs of frosting indicating nitrogen has been removed and propane has arrived at this point. Repeat this for the other switchover line.

11. Inventory beds filling valve (V-10042) Line up V-1001A Lead V-1001B Lag ( Appendix 2, Feed Guard Bed Line Up) block valve 6 inlet V-1001B (V-10047, V-10048)

Block valves cross over line (1000-P-0105-6-T2A1-NI), V-10013, V-10015

Block valves 6 cross over line (1000-P-0106-6-T2A1-NI), V-10023, V-10025

Outlet valves vessels (V-10017, V-10019, V-10021, V-10067)

vent valves After inventorying is complete, close the " filling line, and line up the Feed Guard Beds in series flow, such that V-1001A is in lead position and V-1001B is in the lag.

a. Close both 6" block valves on inlet to V-1001B.b. Open both 6" block valves on switchover line 1000-P-0105-6T2A1-NI.c. Ensure both 6" block valves on the switchover line 1000-P-0106-6-T2A1-NI and the outlet lines from both vessels remain closed.d. Ensure all vent valves closed.

12. filling line (V-10042) V-1001A pressure pressure equalize filling valve (V-10042) block valve V-1001A Inlet (V-10043)Slowly open the " filling line around second inlet valve to V-1001A , and increase the pressure of the Feed Guard Beds to the propane feed line pressure. After the pressure of the Feed Guard Beds has equalized with the propane feed line, close the " inventorying line and open the second 6 inlet block to V-1001A.

13. Propane Inventory 10-UZV-101 Service Close 10-UZV-101 /equivalent OSBL valve after beds have been placed in lead and lag position. This step is optional per HMC/CTSW.

14. Leak flanges connection, thermowells, instrument connection, Valve stem Gas Detector LEL Operator m Leak Check all of the flange connections, including thermowells and instrument connections, in the Feed Guard Bed system for leaks using a portable hydrocarbon analyzer. Valve stems should also be checked to ensure the packing glands are not leaking. Also check all vents and drain valves for signs of frosting.

Note- Operators should follow site safety policy to check leaks.

5.2 Feed Drier (V-1002A/B)

Feed Drier Blank 4-7 kg/cm2G Leak Test, Moisture and Air Freeing Vessel

Work Instruction

1. Inlet Outlet Feed driers Switchover Line (Appendix 3 Feed Drier V-1002A Line Up)**KBV Bleed valve **Close all valves on the inlet and outlet of each Feed Drier as well as on the switchover lines. Keep all KBV valves closed at FFD and FFD regen section including KBVs on bleeds.

2. Isolate moisture analyzer (10-AI-001)Ensure that the moisture analyzers (10-AI-001 is isolated.)

3. Feed Driers (V-1002A/B) isolate Feed Drier Regeneration Regenerant Supply Return (10-KBV-117,10-KBV-119,10-KBV-104,10-KBV-103,10-KBV-115,10-KBV-131,10-KBV-129,10-KBV-132) Regenerant Liquid Feed Drier P-3013 isolate 10-LV-006

30-FV-024 Isolate Gate valves 2 blind 2 dry out line (3000-0604-2-T2A1-NI) Deethanizer Reflux pumps Ensure that Feed Drier System remains isolated from Feed Drier Regeneration System:

a. Valves on the regenerant supply and return lines should all be closed. (10-KBV-117,10-KBV-119,10-KBV-104,10-KBV-103,10-KBV-115,10-KBV-131,10-KBV129,10-KBV-132)b. Regenerant liquid to the Feed Drier inlet line from P-3013 should also be closed and isolated at 10LV-006.c. 30-FV-024 should be closed and isolated.d. The two gates valves and blind on the 2 dry out line (3000-0604-2-T2A1-NI) from Deethanizer reflux pumps (P-3002A/B) is in the closed position.

4. 6 inlet valve (10-KBV-112) V-1002A 10-KBV-111 Open the first 6" inlet 10-KBV-112 valve to V-1002A. The second 6 valve10-KBV-111 should remain closed.

5. 10-UZV-101 HS-101A HS-101BOpen 10-UZV-101 by engaging switch HS-101A or HS-101BB.

6. 6 block valve outlet V-1001B Battery Limit V1001A B fill line Block valve inlet V-1002A ** 10-PG-104 monitor propane liquid line **Open the two 6" manual block valve at the outlet of V-1001B. Propane feed is now lined up from battery limit supply, through both Feed Guard Beds in series flow, to the inlet block valves of the two Feed Driers. Monitor 10PG-104.

7. bypass 10-KBV-111 pressure up V-1002A V-1002A 20-25 kg/cm2G

** inventory pressure up V-1002A bed drier bed Unloading/Loading Bed**Open 10-KBV-112 and keep 10-KBV-111 closed. Open the bypass around 10-KBV-111. Pressure up V-1002A up to 20~25 kg/cm2 (g).

NOTE: Care must be taken to inventory the Feed Driers slowly! There will initially be a large differential pressure between the feed and the nitrogen inside the drier. Rapid pressurization could disturb the drier bed. The vessel will need to be unloaded and reloaded if channeling occurs or if the bed is lifted during inventorying.

8. Check all of the flange connections, including thermowells and instrument connections, in the Feed Drier system for leaks using a portable hydrocarbon analyzer. Valve stems should also be checked to ensure the packing glands are not leaking.

9. 1 bypass PSV1002A pressure 12-15 kg/cm2G

** depressurize pressure boil propane re-pressure Open the 1 " bypass around PSV-1002A to vent nitrogen. Slowly reduce the pressure to 12~15 kg/cm2(g).

Note- Pressure will stabilize when its at vapor pressure. When pressure gets down to vapor pressure, dont wait to let the propane boil off, just re-pressure.

10. 20.4 Kg/cm2G filling valve Increase the pressure in V-1002A again to 20.4 kg/cm2(g), then close the filling valve.

11. (Step 8-9) PSV1002A downstream 1 bypass valve PSV1002A Liquid Propane vessel Continue pressuring up the drier to 20~25 kg/cm2 (g) and depressurizing to 12~15 kg/cm2(g) until the 1 1/2" bypass valve around PSV-1002A begins to frost, indicating the vessel is full of propane.

12. Liquid propane V-1002A inventory propane V-1002B isolate 10-FV-004

confirm 30-FV-024, V-20624, V-20623 (Block valve Bypass valve) V-20621 10-KBV-120 10-UZV-105

line 10-KBV-120 ( UZV105 (30-FV-024 V-1002B (N2 Header)

** N2 hose drain valve (V-20622) upstream 30-FV-024 lift bed V-1002B Pressure Gauge V-20622 monitor pressure 10-KBV-122

10-KBV-120 10-KBV-121Once filling of V-1002A has been completed Isolate at 10FV004. Verify 30FV024 closed, valve V20624 closed, V20623 closed, V20621 open. Verify 10KBV120, 10KBV120 closed. Open 10UZV105 Verify the pressure in line from KBV120 ( UZV105 ( 30FV024 is about equal to V1002B pressure. If needed pressure N2 to V20622 drain upstream of 30FV024. (To prevent lifting V1002B bed in next step). Install temporary pressure gauge at V20622.

Close KBV-122

Open 10-KBV-120 & 10-KBV-121

Close the isolation valve downstream of 30-FV-024.

13. inventory V-1002B 10-KBV-127 filling valve (Bypass of 10-KBV-127) pressure up V-1002B 20-25 kg/cm2G ** inventory pressure up V-1002B bed drier bed Unloading/Loading Bed**V-1002B will be inventoried as follows;

a) Make sure 10-KBV-127 is closed.

b) Open 10-KBV-126.

c) Open the bypass around 10-KBV-127.

d) Pressure up V-1002B up to 20~25 kg/cm2 (g)

NOTE: Care must be taken to inventory the Feed Driers slowly! There will initially be a large differential pressure between the feed and the nitrogen inside the drier. Rapid pressurization could disturb the drier bed. The vessel will need to be unloaded and reloaded if channeling occurs or if the bed is lifted during inventorying.

14. vent PSV-1002B (1 bypass valve) pressure 12-15 kg/cm2GOpen the 1 " bypass around PSV-1002B to vent nitrogen. Slowly reduce the pressure to 12~15 kg/cm2 (g).

15. Check all of the flange connections, including thermowells and instrument connections, in the Feed Drier system for leaks using a portable hydrocarbon analyzer. Valve stems should also be checked to ensure the packing glands are not leaking.

16. pressure V-1002B 20-25 kg/cm2G filling valveIncrease the pressure in V-1002B again to 20~25 kg/cm2 (g), then close the filling valve.

17. V-1002B 20-25 kg/cm2G de-pressurize 12-15 kg/cm2G downstream bypass valve PSV1002B Liquid Propane V-1002B Continue pressuring up the drier to 20~25 kg/cm2 (g) and depressurizing to 12~15 kg/cm2(g) until the 1 1/2" bypass valve around PSV-1002B begins to frost, indicating the vessel is full of propane.

18. Line Depropanizer Feed Drier 30-FV-024 Liquid Propane V-20621, 30-FV-024 Vent Nitrogen DF (3000-DF-1702-3/4-T1A1-NI), V20625 V-20627 DF line Liquid propane 30-FV-024 30-FV-024 upstream block valve (V-20621)** filling valve Liquid Propane Ensure that the 1000-P-0204-6-T2A1-NI is liquid full right up to 20-FV-024. Open the block valves on 3000-DF-1702- -T1A1-NI just downstream of 30-FV-024 and vent until frost to confirm propane has reached that point. Keep the drier liquid full by opening filling valve during this step. Close 30-FV-024 and its upstream isolation valve at this point.

19. switch over lines 6 valve 10-KBV-123 10-KBV-124 switch over line (1000-P-0208-6-T2A1-HC) 10-KBV-125 There may still be nitrogen in the switchover lines. The nitrogen will be removed from these lines, one at a time. Open the 6" valve 10-KBV-123 and valve 10-KBV-124 on switchover line 1000-P-0208-6-T2A1-HC. The downstream valve 10-KBV-125 on this line remains closed.

20. 1 DF line vent valve switchover line vessels 20-25 kg/cm2G filling valve Vent nitrogen by opening the 1" vent valve to flare header. Continue venting until the vent valve begins frosting. Repeat this procedure on the other switchover line. Propane will have to be topped up during this process to maintain 20~25 kg/cm2 (g) on vessels.

Ensure the filling line is isolated after this activity.

21. V-1002A/B line up driers normal operation 6 Inlet valves V-1002A (10-KBV-112, 10-KBV-111)

6 outlet valves V-1002B (10-KBV-120, 10-KBV-121)

6 valves switchover line (1000-P-0208-6-T2A1-HC), 10-KBV-123 10-KBV-125

V-1002A/B Feed Supply PressureOnce filling of V-1002B is complete, line up the driers for normal operation in series flow.

a. Open the two 6" inlet valves to V-1002A. (10-KBV-112 & 10-KBV-111).b. The two 6" outlet valves from V-1002B remain open (10-KBV-120 & 10-KBV-121)c. Open the two 6" valves in the switchover line 1000-P-0208-6-T2A1-HC (10-KBV-123 & 10-KBV-125).d. The two 6 valves on switchover line 1000-P-0209-6-T2A1-HC (10-KBV-108 & 10-KBV-110) will remain closed.e. Pressure Driers to Feed Supply Pressure.

22. Leak flanges connection, thermowells, instrument connection, Valve stem Gas Detector LEL Operator m Leak Check all of the flange connections, including thermowells and instrument connections, in the Feed Drier system for leaks using a portable hydrocarbon analyzer. Valve stems should also be checked to ensure the packing glands are not leaking. Open vent valves between closed valves to confirm no leaking valves or identify leaking valves by frosting.

Note- Operators should follow site safety policy to check leak.

5.3 Depropanizer Inventory and Total Reflux Operation

Depropanizer feed forward Feed Drier Feed drier Liquid Propane Depropanizer blank inventory propane over-pressure columnWork Instruction

1. 10-UZV-101, 10-UZV-131, 10-UZV-132 make sure feed forward feed drier Both Feed Guard Beds and Fresh Feed Driers are now inventoried with propane and at feed pressure (10-UZV-101, 10-UZV-131, 10-UZV-132 are open)

2. Depropanizer P&ID mark up (Appendix. 4 )Prepare the Depropanizer column to receive propane following P&ID mark-up(Appendix. 4 )

3. pressure Depropanizer Column 7 kg/cm2G (N2 header) pressure column ** hose contaminate N2 header lineIf the pressure of the Depropanizer Column system is less than the nitrogen header pressure, connect a nitrogen hose to the utility connection provided at the bottom of the column and pressurize the system to 4 kg/cm2G. The nitrogen connection provided on the V-3003 can also be used to pressure up the system. Ensure that this line is closed and blinded after use.

NOTE: Remove the nitrogen hose after completion of this activity in order to prevent nitrogen header contamination.

4. 10-UZV-105 Verify 10-UZV-105 is open.

5. 30-FV-024 30-FV-024 manual mode output valve column pressure 10.2 kg/cm2G Open 30-FV-024 in manual and begin sending propane to the Depropanizer. Open the control valve slowly to pressure the column first. The valve opening can be increased once the column pressure has increased above 10.2 kg/cm2(g), or vapor pressure of propane at ambient temperatures. Open CV bypass to purge as well.

6. Leak flanges connection, thermowells, instrument connection, Valve stem Gas Detector LEL Operator m Leak ** bleed valve valve passingCheck all of the flange connections, including thermowells and instrument connections, in the Depropanizer system for leaks using a portable hydrocarbon analyzer. Valve stems should also be checked to ensure the packing glands are not leaking.**Open vent valves between closed valves to confirm no leaking valves or identify leaking valves by frosting.

7. Proceed to depressurize the column from the top and at non-condensible vents until pressure is 3 kg/cm2G. Repressurize to 10 kg/cm2G and repeat the above step 3 times more.

8. vent valve bypass PSV3011A/B 17.3 kg/cm2GContinue importing propane to the column, and open the 2" bypass valve around PSV-3011A/B to vent nitrogen from the column and maintain the column pressure below 17.3 around 11-12 kg/cm2(g).

Startup Reboilers/Condensers

9. propane feed C-3004 30-LIC-010 70-80% 30-FV-024

** start reboiler C-3004 100% column tray Continue feeding propane to the Depropanizer until the bottoms level, as indicated by 30-LIC-010, reaches between 70 and 80%, then close 30-FV-024.DO NOT ADD HEAT TO A COLUMN IF LI >100% or TRAY DAMAGE MAY RESULT.

10. LPS Block valves E-3005A/B reset open 30-UZV-325, 326 30-UZV-327,328 (LP steam to reboilers E-3005A/B)Confirm V-20709 and V-207156 are closed. Reset open 30-UZV-325,30-UZV-326,30-UZV-327,30-UZV-328, LP steam to reboilers E-3005A/B.

11. drain condensate reboilers steam warm line (V-20725 V-20708) dry steam flow drain valve reboiler steam outlet lineDrain condensate from reboilers and cut in steam via (V20725 &V20708) warm-up line until steam exits at drain on reboiler steam outlet line.

12. non-condensible vent Depropanizer Condenser E3010A/B (V-20863, V-20864) Open non-condensible vent on the Depropanizer Condenser E-3010 A/B (3000-P-1913-1-T2A1-NI & 3000-P-1914-1-T2A1-NI).

13. Depropanizer Reboilers warm LPS 30-FV-026, 027 manual mode LPS forward flow reboiler ** LPS flow 30-FV-026, 027 monitor vent PSV-3011A/B bypassOnce the steam supply lines are sufficiently warmed open 30-FV-026 & 30-FV-027 in manual and slowly begin forward flow of LP steam through the reboiler.

NOTE: As the column still contains a significant amount of nitrogen, reboil ramping will be dependent on the pressure venting at PSV-3011 A/B bypass.

14. reboil column 30-LIC-010 make-up fresh propane manual 30-FV-024 50-70%

** 30-LIC-010 > 100% reboiler As reboil increases, the Depropanizer bottoms level (30-LIC-010) will begin to decrease. Makeup propane feed to the column as needed (30-FV-024) by very slowly opening to maintain the level between 50 and 70%.Take care not to over-fill the column with propane. If overfilled, stop heat input to the column.

15. bypass PSV-3010A/B PSV-3011A/B bypass valve column pressure stable

** vent N2 downstream 30-PV-017 N2 E-3010A/B Continue venting from the PSV-3011A/B and PSV-3010A/B bypass until all the nitrogen is removed, as indicated by chilling of the bypass valve and stable column pressure. Vent with Hot vapor bypass 30PV017 open for some time and then closed for some time to purge N2 from line to exchanger and into receiver.

16. 30-PV-017 Auto mode set point 16.7 kg/cm2G Commission 30-PIC-017 and place in automatic control with a set point of 16.7 kg/cm2 (g).

Start Overhead Pump and place on Total Reflux.

17. condense V-3003 30-LIC-011 40% start P-3005A vendors recommendationPropane will eventually begin to accumulate in the Depropanizer Receiver (V-3003). When the level 30-LIC-011 reaches 40%, start the Depropanizer Overhead Pumps (P-3005A) as per vendors procedure.

18. P-3005A start reflux C-3004 30-FV-028 reflux flow 30-LIC-011 50-70%After the pump is in operation, gradually start reflux back to C-3004 via 30-FIC-028. Increase the reflux flow until the Overhead Receiver level has stabilized between 50 and 70%.

19. 30-FV-024 30-LIC-011 stable 50-70% 30-FV-024Reduce and eventually stop fresh propane to C-3004 when the Overhead Receiver level and column bottoms level stabilizes 50-70%.

20. commissioning sample points: 30-AI-004, SN-3009, SN-3010Commission sample points: 30-AI-004, SN-3009, SN-3010.

21. steam flow reflux flow design (267 Sm3/h) Operate total reflux Continue increasing steam flow to the reboiler gradually until the reflux flow 30-FIC-028 reaches design of 267 Sm3/hr. Continue to operate the column on total reflux.

22. Operating Condition C-3004 dry out Normal Operation 30-TI-035 50 C 30-PIC_017 16.7 kg/cm2GThe actual operating condition of this column during dryout should be similar to normal operating-

Ovhd. Temp- 30-TI-035 = 50C

Ovhd. Pressure- 30-PIC-017=16.7 kg/cm2

23. total reflux stable feed forward Flush control valves bypass Flush sample points Dry flare

Test run standby pump (P-3005B) P-3005A After stable operation has been achieved, the following steps should be takena) Flush all control valve bypasses occasionally.b) Flush through all sample points to Dry Flare.c) Run the spare pumps to test its operation.

24. dew point SN-3010 feed cold boxCheck dew point at SN3010

5.3 Deethanizer Stripper and Deethanizer Rectifier Inventory and Total Reflux Operation

Deethanizer Bypass line Bypass Separation Unit Deethanizer blank over pressure columnWork Instruction

1. cooling water supply return E-3009 Cooling water to E-3009 should be commissioned.

2. dry out Refrigeration Package

Refrigeration package A-3001 should be ready for operation. Vendors instruction to dry out the package should be followed.

3. PP Liquid recycle line PP Plant dry out, blank Deethanizer Before flow from the PP unit is commissioned via 3100-P-0102-2-T2A1-NI, the line should be dried.

4. Line up propane Depropanizer S-2003A/B bypass cold box SHP reactor ( Appendix 5 Deethanizer Hydrocarbon Inventory Line Up)

** Line Air freeing Prepare the Deethanizer Stripper (C-3001) and Rectifier (C-3002) for receiving propane by lining up the flow path from the overhead of the Depropanizer (C-3004) through the Feed Filters (S-2003 A/B) and bypassing the Separations Section (A-2101) and SHP Reactor (R-3001).

(Please ensure that the lines mentioned above have been air freed).

5. Reset open 30-UZV-305, 321, 304 and 320 LP steam to reboilers. Prepare the deethanizer Reboiler (E3001A/B) for operation by warming up the LP steam supply using the 3/4: warm-up valve bypassing the 18 supply block valve. Commission the condensate traps and return lines only steam should be exiting drain valves at rebolier outlet.

6. Open 30-UZV-329 by engaging switch HS-329. Fill Feed Filter (S-2003A) with propane by opening the 8 inlet block valve. The outlet block valve should be blocked in this time. Vent nitrogen from S-2003A by opening the bypass around PSV-2010A. Close when line downstream of valve begins to frost

7. Open 20-UZV-205 by engaging switch HS-205. Inventory the piping downstream of the feed filter, through the separation section (A-2101) bypass and SHP reactor bypass up to 30-FV-004, by slowly opening the 8 outlet block valve on S-2003A. This will pressure the line up until 30-FV-004. Vent nitrogen through the closed sampling system SN-3012, just upstream of 30-FV-004. Close off the vent when the block valve starts frosting.

8. Open 30-UZV-303 by engaging switch HS-303. Open isolation valves then open 30-FV-004 in manual slowly to begin importing propane into C-3001. Open the valve only a few percent initially and allow C-3001 and C-3002 to pressure up above 10.2 kg/cm2G. Once the pressure has been increased, 30-FV-004 can be increased further. In order to prevent upset of the Depropanizer operation, do not exceed 30 m3/h on 30-FIC-004.

9. Open 30-UZV-307 by engaging switch HS-307. Vent nitrogen from the system via the 1 bypass around PSV-3007A/B, on the Deethanizer Rectifier receiver off-gas line. Maintain the pressure below 20.4 kg/cm2G. Spend some time venting with 30-HV-008 open and 30-FV-008 closed and vice versaNote : Do not vent too much N2 from DeC2 in the beginning to try and maintain pressure in column. Also vent from 2 bypass around PSV-3004A/B initially.

10. The design operating pressure of the Deethanizer Stripper is 30 kg/cm2G at 30-PI-003. This pressure will not be achieved at this stage due to absence of ethane in the system

11. The design operating pressure of the Deethanizer Rectifier receiver is 28.8 kg/cm2G at 30-PIC-006. This pressure will not be achieved at this stage due to absence of ethane in the system

12. Continue importing propane into the Deethanizer Stripper (30-FV-004) until a bottom level of 70% to 80% is achieved. Do not allow the level to exceed 100%. Monitor levels upstream and discontinue propane to Depropanizer (30-FV-024).

13. Once the steam supply line is sufficiently warmed up, slowly open 18 block valve upstream of 10-UZV-321 and 320. Open 30-FV-150 and 006 inmanual and slowly begin forward flow of LP steam through the reboiler. Close the bypass valves around 18 inlet LPS supply block valves.

14. As reboiler increases, the level at C-3001 will begin to decrease. Markup propane feed to the column (30-FV-004) as needed to maintain the level 50 and 70%. Watch levels upstream and bring in propane to Depropanizer (30-FV-024). Watch 30-LIC-004 material is denser than normal operation so LIC will indicate false high.

15. Monitor the outlet temperature from E-3009. Initially 30-FV-008 will be closed and 30-HV-0008 open to provide liquid to exchanger to condense in bottom of DeC2 Rectifier and reflux back to DeC2 Stripper.

16. Propane will eventually begin to accumulate in the bottom of C-3002. Open 30-UZV-308 by engaging switch HS-308. When the level 30-LIC-003 reaches 40%, start the P-3001A/B as per vendors procedure.

17. After the pump is in stable operation, gradually start reflux back to C-3001 via 30-FIC-007. Increase the reflux flow until the bottom C-3002 level has stabilized between 50 and 70%. 30-FIC-007 can now be cascaded to 30-LIC-003.

18. Line up and slowly open the hot vapor bypass 30-FV-008 in manual to help build pressure in the Deethanizer system. Both reboiler 30-FIC006 and 150 and hot vapor bypass(30-FIC-008) will have to adjusted to control pressure between 19-21 kg/cm2G

19. Continue increasing reboil to the C-3001 until the reflux flow(30-FIC-007) stabilizes. Once the reflux and the bottom liquid levels in C-3001 and C-3002 are stable, stop importing propane into C-3001.

20. Commission the refrigeration package (A-3001) as per vendor procedure.

21. Slowly begin to cool down E-3002 until the process outlet temperature reduces. At this stage it is recommended to keep this temperature above 10 degree C until fractionation dry out is completed.

22. When the level in V-3001 reaches 40%, Open 30-UZV-131 by engaging switch HS-131. Start the P-3002A/B as per vendors procedure. Slowly open 30-LV-004 in manual until the liquid level in V-3001 is stable at 50 to 70%. 30-LIC-004 can put in auto with a set point of 50%.

23. If the Deethanizer pressure tends to go low it is ok to shutdown the refrigeration package temporarily. Keep C-3001 in operation with C-3002 acting as overhead receiver for C-3001

24. After stable operation has been achieved, the following steps should be taken Flush all control valve bypass occasionally

Flush through all sample points to dry flare Run the spare pumps to test its operation

Flush the liquid recycle lines from the poly units (3100-P-0102-2-T2A!-NI)

25. We must ensure that propane is not leaking into the SHP reactor. Check inlet and outlet of SHP

5.4 Propylene-Propane Splitter inventory and Total reflux operation

Propylene-Propane Splitter bottom Deethanizer Stripper over-pressure Propylene-Propane Splitter dry out propane Work Instruction

Prepare the propylene-propane splitter column for receiving hydrocarbon by lining the propane route from the Deethanizer Stripper column bottom (Appendix.6)

If the pressure in C-3003 is below nitrogen header pressure, connect a nitrogen hose at the 4 utility nozzle at the bottom outlet of C-3003 and pressure the system to nitrogen header pressure.

Open 30-UZV-319, begin import of propane by opening 30-Fv-005 a few percent to the bottom of C-3003 from C-3001 via the 4 startup filling line.

Open the valve only 1 or 2 percent initially and monitor the column pressure. Once the pressure increases above 10.2 kg/cm2G

Control the pressure in the system by venting nitrogen through the 4 line on HPC suction drum (line 3000-DF-1207-4-T1A1-NI) to dry flare. Also vent via 3 bypass around PSV-3009A/B

In order to reduce the time for inventory activity, open the 4 gate valve on the line from the 10 feed line (startup and filling line) to Propylene overhead pump filling the HPC suction drum directly.

Also open the block valves on 3000-P-1205-12-T2A1-NI to being flow to the HPC suction drum from the bottom. Also open 30-UZV-132 by engaging switch HS-132

When liquid level detected on 30-LIC-008 reaches 50%, close the 4 manual block valve on the startup filling line

Open the suction and discharge valves of P-3004A/B and start the pump as per vendors recommendation. The minimum spillback via 30-FV-020 back to the HPC suction drum for the pump.

Continue importing propane into the PP Splitter via the 4 bottom startup filling until the column bottom level (30-LIC-007) reaches 40%. Monitor levels through loop and stop propane floe from storage to C-3004 and C-3001

Continue venting from the 4 line on HPC suction drum to flare and PSV-3009A/B bypass until either the pressure in the PP-Splitter has stabilized and the valves shows signs of propane

Prepare and commission the Heat Pump Compressor (K-3001) auxiliary equipment for operation as per vendors procedure.

Monitor 30-TI-026 closely. Control the temperature by adjusting flow through the Propylene Trim Condensers using 30-FIC-023A/B/C/D

Once the HPC is stable, place the spill-back control valve 30-XV-022 in automatic control, as per vendors procedure.

Slowly open the reboil return from the PP Splitter Reboilers E-3004A/B/C/D. Provide equal reboil flow to each exchanger through 30-FIC-015,016,017 and 018

Vent N2 from the tube side of all reboilers using the non-condensible vent to dry flare. Close valve when frosting is observed.

Adjust flow through the Propylene Trim Condenser with 30-FIC-023A/B/C/D to bring the HPC suction drum pressure (30-PIC-010) up to 11.9 kg/cm2G., then cascade 30-FIC-023A/B/C/D to 30-PIC-010 and place the control 30-PIC-010 in automatic with a set point of 11.9 kg/cm2G.

With single component propane in the PP Splitter system, continue total reflux operation will be difficult, to maintain. If liquid level begins to build up in the HPC suction drum, follow the step below.a. P-3004 should be running on minimum spillback from the previous steps

b. Slowly open both reflux control valves (30-FV035 and 037) in manual with equal output. Adjust the flow to stabilize the level in HPC suction drum

Place 30-FIC-019 in automatic at the current total reflux flow, then cascade to the HPC suction Drum level 30-LIC-008.

Once stable total reflux operation has been established the Diolefin Recycle Pump and the Sample Pump will be started in order to dryout the associated piping, these pumps should be started as per vendors recommendation.