royal purple barrier

This John Crane technology bulletin is intended solely for the use of John Crane personnel and is not to be distributed to the trade.

TECHNOLOGY BULLETIN

COMPANY CONFIDENTIAL ISSUE : 30

Buffer / Barrier Fluids {Royal Purple 22 & Synturion 6} Introduction In 1995-1996 a series of tests were run on a variety of buffer/barrier fluids on a Type 3648 seal. Operating conditions are the baseline parameters for API 682 Flashing Hydrocarbons. This was reported in TRP-MS060 and Technology Bulletin - Issue 6. Synturion 6, manufactured by ExxonMobil , is a relatively new product meant to be in direct competition with Royal Purple 22 (RP22). Testing was completed using the same seal design and size as was used for the original evaluation with Synturion 6 (SYN6) as the barrier fluid. In addition a customer test using Synturion 6 in a Plan 53B system was run in TTC. Results of these tests are included. Barrier Fluid Testing Table 1 is a summary of various tests run to provide a comparison between RP22, SYN6, and an ISO VG 32 oil. The data contained below is for the outboard Type S48 seal.

Table 1 Test Results Large 3648 Seal Plan 53A

Seal Design 4.5/4.0 48RP/S48

4.5/4.0 48RP/S48

4.5/4.0 48RP/S48

4.5/4.0 48RP/S48

Configuration Dual Unpres. Dual Press. Dual Press. Dual Press. Fluid RP 22 RP 22 SYN6 ISO VG32

Pressure (psig) 0 277 271 277 Flow (gpm) 1.7 2.0 2.0 1.8

Temp In/Out (F) 132 / 144 164 / 183 156 / 179 182 / 204 Prim. Ring Slope Pre/Post ( in) 5 CV / 50 CC 10 CV/ 65 CC 16 CV / 120 CC 15 CV / 85 CC

Mating Ring Slope ( in) 15 CV 15 CV 20 CV 15 CV Prim. Ring Wear (in) 0 0 0 0.002

Mating Ring Wear ( in) 10 10 21 10 Time (Hrs) 100 100 100 100

DATE: 06/04/03 PREPARED BY: Ralph Gabriel APPROVED BY: J. Haas ______________________________________________________________________________

Page 1 of 14


Table 2 Test Results Small 3648 Seal Plan 53B

Seal Design 2.875/2.375 48RP/S48 2.875/2.375 48RP/S48 Configuration Dual Press. Dual Press.

Fluid SYN 6 RP22 & SYN6 Pressure (psig) 320 320

Flow (gpm) 0.63 0.63 Temp In/Out (F) See Table 3 See Table 3

Prim. Ring Slope Pre/Post ( in) 5 CV / 25 CC 12 CV / 33 CC Mating Ring Slope ( in) 10 CV 8 CV

Prim. Ring Wear (in) 0.0002 0.00015 Mating Ring Wear ( in) 5 0

Time (Hrs) 106 70.9

In all tests the seal arrangement was a Type 48RP/S48 with a pumping ring on the outboard seal. The face material combination for the larger outboard seal was always P147 vs D81 and P147 vs O58 for the smaller outboard seal. The larger seals were tested with a Plan 53A system and the smaller seals with a Plan 53B system. Test were steady state at 3600 rpm. When the Synturion 6 fluid was used on the larger test seal there was significant damage to the mating ring. This type of grooving was not seen with the Royal Purple 22 or the ISO VG 32 oil tests. It was also not seen on the smaller 3648 seal. There were no temperature extremes in the test that would indicate lubrication or venting problems. The carbon wear was negligible to possibly a slight growth due to the hydroscopic nature of the carbon and/or the limitations of the digital drop indicators. The smaller 2.875/2.375 3648 seal was a test run for a customer using a Plan 53B system with Synturion 6 as the barrier fluid. Originally the seal was tested with the Plan 53B system that utilized only 3 legs of finned tubing as the heat exchanger. This test sequence had a number of starts running only during daytime working hours. There were variations of running with no air circulation, with a fan blowing over the finned tubing and finally with the addition of a Lemco fan-cooled heat exchanger. During these runs the test cell was closed off and the room allowed to heat up from the test rig motor to better simulate hotter outside ambient temperatures. This covers tests 2-3 in Table 3. Following these tests the inboard seal primary ring was changed and a short series of runs were made with Synturion 6 as the barrier fluid and the fan-cooled heat exchanger added to the Plan 53B system (Table 3 Test 4). Without any disassembly, the barrier fluid was changed to Royal Purple 22. There was essentially no change in the temperature rise when the ambient room temperature is taken into account (Table 3 Test 5). The wear during this sequence was minimal.

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Page 2 of 14


Conclusion

Synturion 6 ran with reasonably good results on the smaller 3648 seal even though it ran at a higher pressure (320 vs 275 psig) than the original screening test on the larger 3648 seal. The face damage seen on the larger 3648 seal was significant. Synturion 6 has been used by a number of customers with good results. Any field experience (good or bad) that can be verified will be added to this bulletin as an update. Royal Purple 22 is still considered to be the best buffer/barrier fluid with many field proven applications.

Appendix Contents

Page 4) 4.5/4.0 S48 Primary & Mating Ring Royal Purple 22 Post Test Traces Page 5) 4.5/4.0 S48 Primary & Mating Ring ISO VG 32 Post Test Traces Page 6) 4.5/4.0 S48 Primary Ring Synturion 6 Post Test Trace Page7) 4.5/4.0 S48 Mating Ring Synturion 6 Post Test Trace Page 8) 2.875/2.375 S48 Primary Ring (Test 2/3) Synturion 6 Post Test Trace Page 9) 2.875/2.375 S48 Mating Ring (Test 2/3) Synturion 6 Post Test Trace Page 10) 2.875/2.375 S48 Primary Ring (Test 4/5) Synturion 6 Post Test Trace Page 11) 2.875/2.375 S48 Mating Ring (Test 4/5) Synturion 6 Post Test Trace Page 12) Table 3 Summary Results of Testing Synturion 6 / Plan 53B System Page 13) Original Plan 53B System (finned tubing heat exchanger) Page 14) Modified Plan 53B System with Lemco fan-cooled heat exchanger

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John CraneLarger 3648 Dual Pressurized Seal with RP22 Barrier Fluid

John CraneLarger 3648 Dual Pressurized Seal with Amoco W32 Barrier Fluid

profileView by MetreX

File Name: PST0107.PRFTrace Date: 09-23-2002Trace Time: 08:34:45Filter Type: GAUSSIAN - PCFilter Cutoff: 0.030 inTilt Correction: Straight Line (User Specified)Trace Speed: 0.020 in/secEvaluation Length: 0.500 in

Comments: Primary Ring Post Test TraceC48-4000-006-7250Test 001, Also a Shakedown testT48RP/48TSOtbd/DualDoc 1186Synturion-6 Barrier/Buffer Fluid

Computed Parameters:

Ra = 3.3 in

Zoomed Profile (H-MAG: Autoscale V-MAG: Autoscale)

0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55Displacement (in)

-300

-260

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-180

-140

-100

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-20

20

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Prof

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John CraneNote: Larger 3648 Dual Pressurized Seal with Synturion 6 Barrier Fluid.

John CranePart Number noted above is mislabeled - Should be C48-4000-006-8270.


File Name: PST0108.PRFTrace Date: 09-23-2002Trace Time: 08:50:40Filter Type: GAUSSIAN - PCFilter Cutoff: 0.030 inTilt Correction: Straight Line (User Specified)Trace Speed: 0.020 in/secEvaluation Length: 0.950 in

Comments: Mating Ring Post Test TraceD-3750-591-1903-02Test 001, Also a Shakedown testT48RP/48TSOtbd/DualDoc 1186Synturion-6 Barrier/Buffer Fluid


Ra = 0.8 in


0.05 0.15 0.25 0.35 0.45 0.55 0.65 0.75 0.85 0.95Displacement (in)

-70

-60

-50

-40

-30

-20

-10

0

10

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Prof

ile (

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File Name: PST0107.PRFTrace Date: 02-06-2003Trace Time: 14:23:57Filter Type: 2RCFilter Cutoff: 0.10 inTilt Correction: Straight Line (User Specified)Trace Speed: 0.020 in/secEvaluation Length: 0.500 in

Comments: S48 Primary Ring Post TestOtbd/DualC48-2375-1005-9048-0225 micro inches concaveTest 002 - 003Doc 1184Ra 3.2 micro inches


0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55Displacement (in)

-220

-200

-180

-160

-140

-120

-100

-80

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0

20

Prof

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John CranePrimary Ring material was P147 (M/C 8270)



Comments: S48 Mating Ring PstTestOtbd/DualH-2125-931-9221-0218 micro-inches convexTest 002 - 003DOC 1184Ra 2.3 micro - inches


0.05 0.15 0.25 0.35 0.45 0.55 0.65 0.75 0.85 0.95Displacement (in)

-220

-180

-140

-100

-60

-20

20

Prof

ile (

in)



Comments: Primary Ring Posttest Otbd/DualC48-2375-4005-9048-0230 micro-inch concaveTest 4Doc 1184


Ra = 4.6 in


0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55Displacement (in)

-200-180-160-140-120-100

-80-60-40-20

0204060

Prof

ile (

in)



Comments: Mating Ring Posttest Otbd/DualH-2125-931-9221-0210 micro inches convexTest 4DOC 1184


Ra = 2.5 in


0.05 0.15 0.25 0.35 0.45 0.55 0.65 0.75 0.85 0.95Displacement (in)

-80

-60

-40

-20

0

20

40

60

80

Prof

ile (

in)

Table 3. Test Summary 4/15/2003Flint Hills Refinery - Modified Plan 53 Cell 3, process ISO VG 32 oil, 285-290 psig, 100F, 3650 rpm, barrier fluid Synturion 6, nominal barrier press.= 320 psig

test # duration process flow barrier flow fanrun date (hrs) seal config. (gpm) (gpm) ambient con A con B ccooling note

1a 9/18/2002 1 8B1RP/48LP back-back 7.5 2.5 75 no 1b 9/19/2002 1 8B1RP/48LP back-back 7.5 2.5 75 yes 2a 9/23/2002 2 48RP/S48 face-back 7.5 1.1 80 134.6 145 yes new seal start up2b 9/24/2002 4 48RP/S48 face-back 7.5 1.1 85 yes 2c 9/25/2002 7.5 48RP/S48 face-back 7.5 1.1 90 160 169.4 no all day run 2d 9/26/2002 7.75 48RP/S48 face-back 7.5 1.1 98 168 177 no all day run @ steady conditions2e 9/27/2002 7.5 48RP/S48 face-back 7.5 1.1 101 160 167 no all day run @ steady cond., max. amb. temp2f 9/30/2002 5 48RP/S48 face-back 7.5 1.1 100 165 173 no steady cond.2g 10/1/2002 7.5 48RP/S48 face-back 7.5 1.1 101 163 172 yes measuring effect of air cooling2h 10/2/2002 6 48RP/S48 face-back 7.5 1.1 90 157 143.3 yes measuring effect of air cooling2i 10/3/2002 5.3 48RP/S48 face-back 7.5 1.1 86 159 145.7 yes measuring effect of air cooling2j 10/4/2002 2.5 48RP/S48 face-back 4.3 1.1 95 165.8 175.1 no measuring effect of reduced flows2k 10/7/2002 6.25 48RP/S48 face-back 4.3 1.1 96 163.7 175.3 no measuring effect of reduced flows2l 10/8/2002 5 48RP/S48 face-back 4.3 0.83 94.3 156.9 167.2 no measuring effect of reduced flows

2m 10/9/2002 7.3 48RP/S48 face-back 17.7 0.83 99.6 156.2 165.1 no measuring effect of reduced flows3 10/18/2002 5.5 48RP/S48 face-back 17.7 0.63 94.1 128.78 150.48 yes test w. fan-cooled HE, same seal, Syntur.6, 3560rpm3 10/21/2002 7.6 48RP/S48 face-back 17.7 0.63 96.01 127.88 147.62 yes fan-cooled HE, continuation of the test3 10/22/2002 9 48RP/S48 face-back 17.7 0.63 96.9 128.7 149.4 yes fan-cooled HE, continuation of the test3 10/29/2002 3.1 48RP/S48 face-back 17.7 0.63 88 124.8 148.1 yes fan-cooled HE, continuation of the test3 11/19/2002 3 48RP/S48 face-back 17.7 0.63 89 122.9 144.5 yes 3 1/29/2003 2 48RP/S48 face-back 17.7 0.63 72.3 122.9 144.5 yes 3 total: 105.84 2/20/2003 0.1 48RP/S48 face-back, SiC inb 17.7 0.63 yes SiC PR replaced carb on inb, compare Synt to RP4 2/26/2003 4.5 48RP/S48 face-back, SiC inb 17.7 0.63 70 104 130 yes fan cooled HE4 2/27/2003 7.3 48RP/S48 face-back, SiC inb 17.7 0.63 73 109 134 yes4 2/28/2003 7.7 48RP/S48 face-back, SiC inb 17.7 0.63 77 115 142 yes4 3/3/2003 7.2 48RP/S48 face-back, SiC inb 17.7 0.63 71 110 138 yes4 total: 26.85 3/14/2003 0.1 48RP/S48 face-back, SiC inb 17.7 0.63 Royal Purple 22 barrier fluid, other set up unchanged5 3/18/2003 7.3 48RP/S48 face-back, SiC inb 17.7 0.63 79 118 143 yes pumped up barrier 310.7 to 317.5 193 ml5 3/19/2003 9.03 48RP/S48 face-back, SiC inb 17.7 0.63 76 115 142 yes barrier pressure ok5 3/20/2003 8.5 48RP/S49 face-back, SiC inb 17.7 0.63 82 122 148 yes rig heating up during the day5 3/21/2003 9.78 48RP/S50 face-back, SiC inb 17.7 0.63 80 120 146 yes rig heating up during the day5 3/24/2003 9.4 48RP/S51 face-back, SiC inb 17.7 0.63 84 126 151 yes rig heating up during the day5 total: 44.11

temperature (typical)

IntroductionIn 1995-1996 a series of tests were run on a variety of buffer/barrier fluids on a Type 3648 seal. Operating conditions are the baseline parameters for API 682 Flashing Hydrocarbon. This was reported in TRP-MS060 and Technology Bulletin Issue 6. Syntu

Barrier Fluid TestingTable 1 is a summary of various tests run to provide a comparison between RP22, SYN6, and an ISO VG 32 oil. The data contained below is for the outboard Type S48 seal.Table 1 Test Results Large 3648 Seal Plan 53ATable 2 Test Results Small 3648 Seal Plan 53BConclusion

Temp 10.pdfIntroductionIn 1995-1996 a series of tests were run on a variety of buffer/barrier fluids on a Type 3648 seal. Operating conditions are the baseline parameters for API 682 Flashing Hydrocarbons. This was reported in TRP-MS060 and Technology Bulletin - Issue 6. Sy

Barrier Fluid TestingTable 1 is a summary of various tests run to provide a comparison between RP22, SYN6, and an ISO VG 32 oil. The data contained below is for the outboard Type S48 seal.Table 1 Test Results Large 3648 Seal Plan 53ASeal DesignTable 2 Test Results Small 3648 Seal Plan 53B

Seal DesignConclusion

royal purple barrier

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