Doc No: OMM50003169
Rev: A Page 1 of 22
OPERATION AND MAINTENANCE MANUAL, CHIKSAN LONGSWEEP
SWIVEL JOINTS FOR SOUR GAS
Rev
ECN No.
Date
Reviewed By
Approved By
Status
A
5035411
25-JUN-2014
Darby, Scott A.
Soltau, James
RELEASED
Summary:
This document covers the safe operation, maintenance and repair of 1-, 2-, 3-, and 4inch LSG-10 as well as 2- and 3-inch LSG-15 Chiksan® Longsweep® Swivel Joints.
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 2 of 22
Table of Contents
1.0
1.1
1.2
1.3
1.4
1.5
1.6
2.0
2.1
2.2
2.3
2.4
3.0
Operating Instructions .................................................................................. 6
Product Description ................................................................................... 6
Service Applications .................................................................................. 6
Pressure/Temperature Ratings .................................................................. 7
Leak Detection ........................................................................................... 8
End Connections ....................................................................................... 9
Swivel Life and Preventative Maintenance ................................................ 9
Repacking Instructions............................................................................... 10
Special Tools ........................................................................................... 10
Disassembly ............................................................................................ 11
Assembly ................................................................................................. 14
Packing Identification ............................................................................... 17
Hazardous Conditions ................................................................................ 21
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 3 of 22
List of Tables
Table 1: Packing Identification .................................................................................................. 17
Table 2: Lubricant Data ............................................................................................................. 17
Table 3: Replacement Parts ...................................................................................................... 18
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 4 of 22
List of Figures
Figure 1: Longsweep Styles ........................................................................................................ 5
Figure 2: Longsweep Swivel Joint Exploded View ..................................................................... 10
Figure 3: Male Snap-In Race .................................................................................................... 19
Figure 4: Male Snap-In Race .................................................................................................... 19
Figure 5: Male Snap-In Race .................................................................................................... 19
Figure 6: Female Snap-In Race ................................................................................................ 19
Figure 7: Female Snap-In Race ................................................................................................ 20
Figure 8: Female Snap-In Race ................................................................................................ 20
Figure 9: Female Snap-In Race ................................................................................................ 20
Figure 10: Female Snap-In Race .............................................................................................. 20
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 5 of 22
Chiksan® Longsweep® Swivel Joints
Figure 1: Longsweep Styles
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 6 of 22
1.0
Operating Instructions
1.1
Product Description
Chiksan Longsweep swivel joints are made to handle a variety of oilfield fluids,
including cement, drilling mud, fracturing fluids, crude oil and other abrasive welltreating materials.
Several Longsweep styles are available. These configurations provide flexibility in
making piping connections at the wellhead, blowout preventer stack, and at other
pieces of equipment used in servicing or testing wells.
NOTE






1.2
FMC Technologies manufactures Chiksan Longsweep Sour gas swivel
joints in accordance with the National Association of Corrosion
Engineers (NACE) Standard MR0175 and the American Petroleum
Institute's (API) Standard RP-14-E.
Longsweep swivel joint components are made from low-alloy steel and are heattreated to achieve required strength for the rated working pressure.
Sour gas swivels have snap-in ball races to assure high load-bearing capacity.
Primary packings are elastomeric with a bonded metal anti-extrusion ring.
All Longsweep swivels, except for the 1- and 1 1/2-inch sizes, have a secondary
o-ring with a leak detector port between the primary and secondary seals.
If leakage should occur through the packing, the self-relieving grease retainer will
prevent pressure accumulation in the ball race chamber.
Longsweep sour gas swivel joints are available with integral Weco® sour gas
wing union end connections of corresponding pressure ratings.
Service Applications
Although Longsweep swivel joints can be rotated or oscillated while under fluid
pressure, seal and bearing life may be dramatically shortened if they are subjected to
significant motion at high pressure. Chiksan swivel joints are not recommended for
use under continuous rotary motion. Swivel joint life and warranty will be limited if
joints are subjected to continuous oscillation at high pressure.
When connecting swivels to pumps on vehicles, or when installing swivels or
fabricated loops into stationary fluid lines which are subject to vibration, the swivel
joints must be oriented so that line flexibility is present in all planes. Style 50 (2
swivels) or Style 10 (3 swivels) assemblies are suited for most of these installations.
Style 40 (1 swivel) assemblies are not normally used and are not suitable for use in
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 7 of 22
these applications. See FMC Technologies brochure "Flowline Layout - Seven
Degrees of Freedom" for proper layout of swivel joints in high pressure applications.
Care must be exercised when installing swivel joints to prevent subsequent
mechanical loading which might cause bearing damage. Typical services which
require special thought and care include installation of piping from pump vehicles to
lines on the ground and running of lines where trucks or other vehicles could hit or
run over the lines.
Acids or other corrosive fluids may cause pitting of internal surfaces and deterioration
of packing. Use of inhibitors in these fluids and thorough flushing of swivels after
exposure to pressure are necessary to minimize damage. Examination of swivel joints
following each exposure is recommended.
Applied bending or tensile forces will result in stresses and ball-race loads which add
to those induced by internal pressure. If loads are to be applied, consult factory to
determine limitations that may result. Gases at high pressures (especially carbon
dioxide and hydrogen sulfide) tend to permeate elastomers, resulting in blistering or
rupturing when pressure is released. After known exposure to gas pressures above
2,000 psi, FMC recommends that swivels be examined frequently and damaged
packings replaced.
Longsweep swivel joints are not recommended in applications where rotating torque
may be a critical factor. These swivels have relatively high torque levels, especially at
high pressures, and torque will vary as much as 50 percent between swivels.
NOTE
1.3
Standard service rated Longsweep swivels are not suitable for use in
Sour Gas environment, because they are susceptible to stress corrosion
cracking. Special swivels conforming to NACE MR0175 are available for
Sour Gas service.
Pressure/Temperature Ratings
Longsweep sour gas swivel joints are available for service at 10,000 psi to 15,000 psi
cold working pressure. Pressure ratings are given on nameplates and union nuts that
are part of the specific assemblies.
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 8 of 22
Nameplates are the primary way to identify the pressure rating of a
Longsweep sour gas swivel joint. They must not be removed, painted or
otherwise obliterated.
NOTE

All Chiksan sour gas swivel joints are painted with a green zinc chromate color,
regardless of rated working pressure.
Since swivels may be repainted a different color by users, do not use
color as a primary means of identification.
WARNING
The rated working pressure is not to be exceeded during field service or
field testing.
CAUTION
Assemblies consisting of components with different pressure ratings are always
limited to the lowest rating given on any individual component.
1.4
Leak Detection
All Chiksan sour gas swivel joints have a leak detector port which is open to the
atmosphere. FMC Technologies recommends that users monitor ports during and
after each use of the swivel joint. When leakage is detected, the swivel must be
repacked as soon as possible to prevent fluid from contaminating ball races and to
protect against a severe escape of hazardous fluid.
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 9 of 22
Leak detection ports must remain open at all times.
NOTE
1.5
End Connections
Weco wing union end connections have pressure ratings that are consistent with the
swivel joint rating. Union parts with the same figure numbers are interchangeable.
Mixing parts with different figure numbers is hazardous and can cause wing union
failure. Substituting parts other than Weco voids pressure ratings.
When tightening union nuts, personnel must wear suitable eye protection to protect
against metal fragments that may be loosened from the surfaces of the nut or
hammer.
Use of excessive hammering force or over-tightening can damage wing unions and
must be avoided.
Threaded end connections are not available on sour gas swivel joints with pressure
ratings above 5,000 psi cold working pressure.
Longsweep swivel joints are not intended for service in assemblies, fixtures, or
machines which inhibit rotation about the centerline. Alignment and concentricity of
bearings with the end connections require a total lack of constraint to assure
dependable service.
1.6
Swivel Life and Preventative Maintenance
Because normal applications for Longsweep swivel joints involve handling of abrasive
or corrosive fluids at relatively high flow velocities, internal surfaces may be subject to
accelerated deterioration as indicated by loss of wall thickness, pitting and wear on
sealing surfaces, or possible ball race damage if packing leakage was not detected
early.
To prevent leakage, malfunctions resulting from internal wear, packing degradation,
or ball-race deterioration, the user must establish a Preventive Maintenance and
Inspection Program. This program must include: inspection of parts to detect loss of
wall thickness which may result in decreased pressure capacity; routine replacement
of packings; and, regularly scheduled lubrication.
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 10 of 22
NOTE
Longsweep swivel joints which exhibit a loss of wall thickness exceeding
20 percent at any point must be taken out of service. Wall thickness may
be measured using visual, sonic or mechanical means. See Engineering
Reports RPT50001989 & RPT50002000 for wall measurement criteria for
Weco and Chiksan products.
After handling acids or other corrosive fluids, swivels must be flushed out with water
to prevent continued corrosion and deterioration when not in service.
2.0
Repacking Instructions
Figure 2: Longsweep Swivel Joint Exploded View
2.1
Special Tools
1. Truarc pliers
2. Awl or similar pointed tool
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 11 of 22
3. Vise
4. Screwdriver
5. Pin punch
6. Pipe wrench
2.2
Disassembly
1. Remove ball plug snap rings using Truarc pliers.
2. Remove ball plugs using an awl.
3. Secure female component in vise with ball plug holes positioned over a suitable
container.
4. Rotate male component, using a pipe wrench if necessary. Ball bearings should
drop out.
It may be necessary to thin hardened lubricant with petroleum solvent.
NOTE
5. Separate male and female components after ball bearings have been removed.
Do not damage machined surfaces when separating components. Protect
sealing surfaces at all times.
CAUTION
6. Carefully remove old molded packing with anti-extrusion ring from female packing
chamber using a screwdriver.
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 12 of 22
Use extreme care in removing old packing to prevent damage to sealing
surfaces.
CAUTION
7. Remove grease retainer and secondary o-ring seal from female component.
8. Using a screwdriver, pry one end of female snap-in race from outer race groove.
Continue to force end outward until it can be grasped by one or both hands and
removed from component. See Figs. 6 & 7.
9. Repeat procedure for each female snap-in race.
Use care to prevent scoring or gouging of race groove or other machined
surfaces.
CAUTION
Snap-in races are full hard stainless steel and may have sharp corners or
edges. Personnel should wear gloves when removing or installing them.
CAUTION
10. Remove grease retainer from male component.
11. Insert a screwdriver between ends of male snap-in race. Turn in separate ends
and raise one end out of race groove.
12. Transfer snap-in race to adjacent outward race groove and repeat until it is
removed. See Figs. 3 & 4.
13. Repeat procedure for each male snap-in race.
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 13 of 22
Use extreme care when removing snap-ins from end of swivel to prevent
scratching or scoring of critical sealing surfaces.
CAUTION
14. Clean all parts with petroleum solvent.
15. Inspect parts for excessive wear, corrosion or other damage.



Inspect ball races for dents or grooves.
Check male and female components for excessive erosion or corrosion.
Carefully inspect the inside surfaces of elbows for evidence of erosion or
corrosion.
Replace all parts for which visual, ultrasonic, or other inspection means
indicate wall section wear or thinning in elbows or straight sections.
Such damage will result in severely reduced pressure and structural
capacity. Replace all parts that show evidence of damage in the ball
races, packing seal surfaces, or other areas. (See Swivel Life and
WARNING Preventative Maintenance.)
16. Sealing surfaces must be completely smooth. Remove minor scratches or pitting
by polishing with fine abrasive.
17. Re-clean all parts after polishing to remove metal particles and abrasives.
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 14 of 22
2.3
Assembly
CAUTION
Prior to installation, carefully examine both male and female race
grooves for burrs, nicks or other surface imperfections, which could
prevent proper fit of the snap-in ball races. Repair surfaces as
appropriate.
All mating internal surfaces of the body parts should be clean and free of
any foreign matter.
NOTE
1. Apply a thin coat of grease to packing faces, packing chamber, and o-ring
grooves of the ball race end components. Similarly coat the o-rings and the
molded packing.
Make sure correct lubricant is used for intended service conditions. (See
Lubricant Data.)
CAUTION
2. On the swing end component, as shown in Fig. 3 place one end of the male snapin race into the front race groove, then with a circulation motion, push the race
over the end and into the front groove.
CAUTION
Use extreme care during installation of snap-in ball races to prevent
scratching of critical packing sealing surfaces. Do not use petroleum
base lubricant with 6X packing. This can cause packing deterioration.
(See Lubricant Data in Table 2.)
3. Insert a screwdriver between the ends of the male snap-in race. Then turn the
screwdriver to separate the ends, raise one end and transfer to next race groove.
See Figs. 4 & 5.
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 15 of 22
4. Repeat to transfer snap-in race to rear race groove and for each of the other male
snap-in races.
5. On the male end component, install the o-ring into the seal groove.
6. Insert and hold one end of the female snap-in race into the rear female groove as
illustrated in Fig. 8. Then compress the remainder and force it into the rear
groove.
7. Repeat in similar manner for the other race grooves.
8. Ends of snap-in races must be equally spaced on each side of the ball plug hole
before starting assembly and after all balls have been inserted. See Figs. 9 & 10.
9. Secure female end component in a vise with the ball plug holes on top. Install
molded packing with anti-extrusion ring in to packing chamber of female end.
Install grease retainer ring in grease retainer ring groove.
NOTE
After the male snap-in ball races are completely and properly seated
there must be a small gap between the ends. Snap-in races may not
always seat fully into their grooves until after balls have been installed.
However, they must not project above or below their grooves to an extent
that will prohibit placing the nipple end into the coupling.
Anti-extrusion ring must face outward, toward ball races. Lip on ID of
grease retainer must face away from ball races when installed.
CAUTION
10. Insert the male end component into the coupling end of the female component
until packing face of the male end makes contact with the molded packing.
The packing must be compressed between the packing face of the swing
end component and the packing gland of the coupling end component in
order for the male and female races to come into alignment.
NOTE
11. Insert one ball into the ball plug hole closest to the packing. Using a screwdriver
or pin punch, pry the ball down into the raceway. Rotate the swing end
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 16 of 22
approximately 180° and push another ball into the same race until races are filled
with the specified number of balls in each race. If necessary, use the same
method used to insert the first ball.
After the first two balls have been inserted into the race, the swivel
should swivel freely. If not, disassemble the swivel and inspect the
packing and components for damage and/or foreign matter.
NOTE
12. Drop the rest of the balls into the races through the ball plug holes. Rotate the
swing end component and add balls until the races appear to be filled.
13. Attempt to drive one more ball between two of the balls already in a race using a
pin punch and lightly tapping with the flat end of a ball peen hammer. Continue
adding balls in this manner until it is impossible to separate adjacent balls enough
to allow another ball in-between.
CAUTION
Count the number of balls installed in each race to be certain that exactly
the specified number are installed. Incorrect number will cause binding
or excessive wear and reduced pressure or structural capacity. (Refer to
Replacement Parts List for the specified model.)
14. Remove the extra ball and insert a ball plug into the ball plug hole. Install the snap
ring using Truarc pliers to retain the ball plug.
15. Repeat steps 10 and 11 for the other races.
16. Apply grease through the lube port using a grease fun. Rotate the swivel between
pump strokes until ball race chamber is full. Rotation of the swivel should be
smooth when lubrication is completed.
Standard lubricant is FMC TS-115 Swivel Joint Grease. (See Table 2.)
NOTE
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 17 of 22
CAUTION
Use only enough lubricant to obtain smooth rotation. Excessive
lubrication, as indicated by grease coming out of leak detection port of
ball retainer plugs, may damage o-rings, ball retainer plugs, antiextrusion ring and displace the packing. If grease retainer ring pops out,
press it back into its groove using edge of a screw driver moving in a
circumferential direction. Clean off all excess grease from exposed
external surfaces. If swivel is more difficult to rotate after greasing than
before, or if lubricant is detected on inside of primary packing, or if
distortion of packing is noted on inner diameter, disassemble joint and
carefully inspect all seals for damage. Replace damaged seals and any
packing which has been distorted or displaced into the bore.
17. Remove excess grease from around the lube port and any which may have
leaked past the grease seal o-ring. Install the lube plug with a screw driver.
2.4
Packing Identification
Unless otherwise specified on purchase order, or required for application
described on purchase order, FMC Technologies will supply
fluorocarbon packing with stainless anti-extrusion ring (HHS).
NOTE
Table 1: Packing Identification
Compound Code*
HH
Compound
Anti-Extrusion Ring
Fluorocarbon Rubber Stainless Steel
*Compound code appears on inside diameter of each packing.
Designation
HH/E
Table 2: Lubricant Data
Lubricant
Temperature Range*
Part Number**
TS-115 (14 oz. tube)
-15°F (-26°C) to 300°F (149°C)
3267513
*Minimum temperature for OOB packing is -20°F (-6°C).
**FMC TS-115 lubricants are available in various container sizes. Consult the Swivel
Joint Grease List for part numbers.
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 18 of 22
Table 3: Replacement Parts
Size (in)
Longsweep Model
Packing, HH/S
Grease Retainer
O-ring, HH
Snap-in Female (3)
Snap-in Male (3)
Ball Bearings
Ball Plugs (3)
Ball Plug o-ring (3)
Retainer (Snap) Rings
(3)
Lube Plug
Full Replacement
Parts Set
Packing Set
Packing
Grease Retainer
O-ring
Ball Plug Set
Ball Plugs (3)
Retainer (Snap) Rings
(3)
Single Ball Plug Set
Ball Plug
Retainer (Snap) Ring
1
2
3
LSG-15
3118466
3103964
3151091
3107693
3107692
(84)
3239221
3107690
LSG-10
6102286
3139551
P500379
6102958
6102957
(60)
3239220
6102959
3231812
LSG-10
3144131
3103964
3151091
3107693
3107692
(84)
3239221
3107690
3239048
3238962 3238962 3238962 3239254 3239254
3258132
3181790 3181790 3181790 3181790 3181790
3267901
3143924 3144634 3145397 3145968 3145400
3144637
3118466
3103964
3151091
3143926
3107690
LSG-10
3127072
3143224
3231057
3121202
3104678
(99)
3239222
3145965
4
3145271
3127072
3143224
3231057
3145265
3134965
LSG-15
3263274
3127401
3146176
3127409
3127410
(78)
3150527
3145966
3145271
3263274
3127401
3146176
3145970
3145966
LSG-10
3136737
3127401
3146176
3127409
3127410
(78)
3150527
3145966
-
3143925
3144131
3103964
3151091
3143926
3107690
-
3238962 3238962 3236962 3239254 3239254
-
3144642 3144642 3145267 3145971 3145971
3107690 3107690 3145965 3145966 3145966
3238962 3238962 3238962 3239254 3239254
3136737
3127401
3146176
3145970
3145966
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 19 of 22
Figure 3: Male Snap-In Race
Figure 4: Male Snap-In Race
Figure 5: Male Snap-In Race
Figure 6: Female Snap-In Race
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 20 of 22
Figure 7: Female Snap-In Race
Figure 8: Female Snap-In Race
Figure 9: Female Snap-In Race
Figure 10: Female Snap-In Race
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 21 of 22
3.0
Hazardous Conditions
The following is a list of hazardous conditions which, if not avoided as
indicated, may result in severe property damage, serious injury, or death.
CAUTION
Hazardous Conditions
Use of incompatible union end connections on
mating piping or equipment will result in
catastrophic failure of the connection at
pressures far below the rate working pressure
of the swivel or union.
Mating end components not manufactured by
FMC Corporation may result in catastrophic
failure of the connection at pressures far below
the rated working pressure of the FMC union
or swivel.
Inadequate make-up of pipe threads may
result in loosening of the pipe connection,
leakage of toxic or flammable fluids, structural
failure of the connection, or catastrophic failure
under pressure. Make-up outside a shop
environment does not provide adequate
control of torque, cleanliness, pipe compound,
and thread engagement to assure leak-free
performance at the rated working pressure.
Assembly of the swivel into a system which
inhibits the free rotation of the swivel about its
centerline will cause binding of the bearings,
premature bearing failure, and possible
structure-pressure load combinations. This
may result in catastrophic failure or structure
collapse.
Use of incorrect swivels in handling fluids
containing Hydrogen Sulfide (Sour Gas) may
result in stress corrosion cracking and
catastrophic failure of the swivel.
Use of swivels at pressures above the rated
working pressure will result in rapid
deterioration of the bearing races and possible
catastrophic failure of the swivel.
Means to Avoid Hazard
Examine the union nut for identification
marking to assure that "Figure Numbers" are
identical. If not identical, DO NOT USE;
consult factory.
Carefully examine all components for FMC
identification marking. FMC Technologies
cannot assure compatibility or performance of
components not made by FMC.
Carefully make-up all pipe thread connections
as recommended by the American Petroleum
Institute. Refer to torque recommendations on
page 1. A hydrostatic test of the system at the
rated working pressure is required prior to use
in the field.
Do not assemble or fabricate the swivel into a
system which fixes the centerlines of both the
male and the female components of the
swivel. Precision tolerances will not alleviate
the hazard described in left-hand paragraph.
See page 5 for further information.
Use only Chiksan swivels specifically
designated and identified for Sour Gas service
for handling these fluids. Consult FMC
Technologies Fluid Control Division regarding
swivel joints for sour gas service.
Include rated working pressure limitations in
written operating procedures and train
operators in the use of the procedures.
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.
Doc No: OMM50003169
Rev: A Page 22 of 22
Uncontrollable hazardous conditions may
result from the use of eroded, corroded, worn,
or "second-hand" swivels, or the modification
of swivels by welding, machining, plating,
heating or substitution of components not
made by FMC.
Use of swivels in handling acids and corrosive
fluids may cause pitting of internal surfaces,
localized wall section thinning, and seal
deterioration. This may result in external
leakage, structural weakening of the swivel,
and potential catastrophic failure.
Use of swivels after initial leakage has been
detected may result in contaminated bearings,
binding of the swivel, external leakage of
hazardous fluids, and the introduction of
mechanical loads beyond the capacity of the
swivel.
Use of swivels in any of the following
applications may result in hazardous
conditions. Means of avoiding these hazards
cannot be predetermined.
-Submerged or underwater service
-Application of external loads
-Continuous rotation or oscillation
-Extended use at temperatures above 160°F
or below O°F
-Handling radioactive materials
-Inaccessible locations or closed environments
in which the eventual leakage of the contained
fluid may create a toxic or flammable
condition.
Impact loads, such as hammer blows, may
cause failure of pressurized swivel joints.
Used or worn swivels must be destroyed to
prevent inadvertent or intentional reuse and
potential injury to subsequent users. Do not
attempt repair. A Preventive Maintenance and
Inspection Program must be initiated. See
Section 1.5.
The use of inhibitors in these fluids and
thorough flushing of swivels immediately after
use is required to minimize damage. See
Section 1.5 for important requirements.
Inspect swivels frequently in the area of the
leak detector port or grease seal. Immediately
discontinue use and maintain swivel per
Repacking Instructions if leaks are detected.
In most cases, special swivels and special
precautions are necessary to avoid
misapplication and potential hazards. Do not
use swivels in these applications without
specific recommendations from FMC
Technologies. Consult FMC Technologies
Fluid Control. See paragraphs on Submerged
Applications, Temperature Limitations, and
General Service in Sections 1.2 & 1.3.
Avoid conditions which expose pressurized
swivel joints to impact loads.
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMCTI.