engineering sealing systems training course for api 682
TRANSCRIPT
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Engineering Sealing SystemsTraining Course
for API 682
MS Jo/John Crane Korea
18~19th March 2009
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American Petroleum Institute
682 Standard3rd Edition & ISO Standard 21049
IntroductionPumps-Shaft Sealing Systems for
Centrifugal and Rotary Pumps
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Crude Distillation
Crude Oil
TYPICAL PRODUCTS
Reformate
GAS & LIQUIFIED PETROLEUM GAS (LPG) VAPOR VAPOR RECOVERYRECOVERY
STRAIGHT RUN GASOLINE
HYDROHYDROTREATINTREATIN
GG
HYDROHYDROTREATINGTREATING
NAPTHAHigh Octane GasolineMIDDLE DISTILLATE
FCCHEAVY GAS OIL
VACUUM GAS OIL
Gasoline between FCC/Hydrocracking
CATCATCRACKINGCRACKING
HYDROHYDROTREATINTREATIN
GG
REFORMINGREFORMING
SOLVENTSOLVENTEXTRACTIOEXTRACTIO
NN
PROPANEPROPANEDEASPHALTDEASPHALT
ERER
SOLVENTSOLVENTDEWAXINGDEWAXING
HYDROHYDROCRACKINGCRACKING
VISBREAKERVISBREAKER
DELAYEDDELAYEDCOKERCOKER
GASOLINE &NAPHTHA
LUBE OILSWAXES
GASOLINE & NAPHTHAFUEL OILASPHALT
GASOLINE & NAPHTHACOKE
REFINERY FUEL GASLPG
REGULAR GASOLINEPREMIUM GASOLINESOLVENTS
AVIATION FUELS
DIESELS
HEATING OILS
LUBE OILS
GREASES
ASPHALTS
INDUSTRIAL FUELS
REFINERY FUEL OILS
COKE
TREA
TIN
G A
ND
BLE
ND
IG
GASOLINE
LUBE STOCKS
Knowledge Is Power
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API 682 Publication Dates
1st Edition issued 19942nd Edition July 2002ISO 21049 February 20043rd Edition September 2004
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API 682 Mission Statement
“This standard is designed to default to the equipment types
most commonly supplied that have a high probability of meeting the
objective of at least three years of uninterrupted service while complying with emissions
regulations.”
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..
API 682 Standard - Aims
Maximum reliability and availability of equipment
Meet emissions legislation
Lower costs - standardisation & reliability
Improved safety - tested & proven sealing systems
Consistent seal application based on accumulation of best practices
Seal interchangeability
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API 676Positive Displacement
PumpsAPI 610
7th EditionPumps and Seals
API 6108th Edition
Mainly Pumps
API 6821st EditionSeals Only
Development of Seal & Pump Standards
API 6109th Edition/ISO 13709
Only Pumps
API 6822nd EditionSeals Only
ISO 21049Seals OnlyAPI 682
3rd EditionSeals Only
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API 682 / ISO21049Product Line
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API 682 / ISO Seal Categories
Category 1Chemical & Petrochemical Industry Pumps.
Heavy duty seals designed for ANSI and ISO enlarged bore seal chambers.
Category 2Oil & Gas Industry API Pumps.
Handles services previously defined as API-610 Applications.
Same qualification tested components as Cat. III Seals.
Category 3Oil & Gas Industry API Pumps.
Premium seals meeting highest specification of API 682.
Require full qualification test reports.
API 6823rd EditionISO21049
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Standard Seal Types & Arrangements
Seal Types
Type A: Rotating pusher seal using O-rings & multiple springs.
Type B: Rotating metal bellows using O-rings.
Type C: Stationary metal bellows using flexible graphite gaskets. Only applies to Cat. II & III for high temperature service.
Seal ArrangementsArrangement 1: Single seal
Arrangement 2: Unpressurised dual seal (Tandem)
Arrangement 3: Pressurised dual (Double)
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0
100
200
300
400
500
600
-100 0 100 200 300 400 500 600 700 800
°F
psig
Category 1, 2, & 3 Operating Ranges
Cat. 1 Seals
Cat. 2 & 3 Seals
API 682 1st edition limits
260°C 400°C
20 bar g
42 bar g
34.5 bar g
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API 682 3rd Ed. / ISOSeal Categories
FEATURE CATEGORY 1 CATEGORY 2 CATEGORY 3
Seal chamber size ISO 3069, ASME B73.1 and ASME B73.2 ISO 13709 / API 610 ISO 13709 / API 610
Temperature range –40 °C (–40 °F) to 260 °C (500 °F)
–40 °C (–40 °F) to 400 °C (750 °F)
–40 °C (–40 °F) to 400 °C (750 °F)
Pressure range 22 bar (315 psi). 42 bar (615 psi). 42 bar (615 psi).
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Category 1 Seal Types
5610Q-1
Type A
Arrangement 1
Registered fit with confined O-ring & metal-to-metal contact with pump seal chamber.
Fixed carbon bushing
Stationary inner seal option
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Category 1 Seal Types
5620P-1
Type A
Arrangement 2
Pumping ring
Reverse pressure balanced
Stationary inner seal option
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Category 1 Seal Types
5620D-1
Type A
Arrangement 2
Secondary containment seal
Stationary inner seal option
Self-sintered Silicon Carbide
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Category 1 Seal Types
5615Q-1
Type B
Arrangement 1
Alloy C-276 Sealol edge-welded metal bellows
Stationary inner seal option
Fixedcarbonbushing
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Category 1 Seal Types5625P-1
Type B
Arrangement 2
Dual seals have radial inlet and tangential outletbuffer/barrier fluid connections
Pumpingring
Stationary inner seal option
Self-sintered Silicon Carbide
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Category 2 Seal Types
1648-2 Type A, Arrangement 1
Based on successful Type 48 design
Standard bushing: FixedStandard flush: Single pointOptional bushing: Segmented or floatingOptional flush: Distributed
Distributed flush Pumping ring(API Plan 23)
Floating bushing Segmentedbushing (JC option)(sleeve hard coating
optional)
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316 SS Metal PartsHastelloy™ C Springs
Fluoroelastomer Secondary Seals
Primary FaceCarbon - standardTungsten Carbide - optional
Reaction- bonded Silicon CarbideHydraulically Retained Mating Ring
Category 2 Seal Types2648-2
Type A, Arrangement 2API flush plan 52Same as Cat. III
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316 SSMetal Parts
Hastelloy™C Springs
Primary FaceCarbon - standardTungsten Carbide -optional
Double-balanced to withstand pressure reversal
Category 2 Seal Types
3648-2 Type A, Arrangement 3 API flush plan 53 or 54Same as Cat. III
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Category 2 Seal Types
1670-2 Type B, Arrangement 1
Pumping ring(API Plan 23)
Floating bushing Segmentedbushing (JC option)(sleeve hard coating
optional)
Distributed flush
Sealol C-276 edge-weldedmetal bellows
Standard bushing: FixedStandard flush: Single pointOptional bushing: Segmented or floatingOptional flush: Distributed
Floating Bushing Shown
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Category 2 Seal Types2670-2 Type B, Arrangement 2
3670-2 Type B, Arrangement 3Axial flow (scroll) pumping ring
2670 uses API flush plan 523670 uses API flush plan 53 or 54Same as Cat. III
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Category 2 Seal Types1604-2 Type C, Arrangement 1
Flexible graphite secondary seals
Steam deflector
Inconel stationary bellows
Floating bushing
Segmentedbushing
(sleeve hard coatingoptional)
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Category 2 Seal Types2609-2 Type C Arrangement 2
3609-2 Type C Arrangement 3
Axial flow (scroll) pumping ring & flow guide
High temperaturerotating Inconel bellows
2609 uses API flush plan 523609 uses API flush plan 53 or 54Same as Cat. III
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Category 2 & 3 SecondaryContainment Seals
2648-2C
Type A
Arrangement 2
Type 48SC
Isolation Bushing
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Category 2 & 3 Secondary Containment Seals2670-2C
Type B, Arrangement 2
ECS™Low-Temperature
Isolation Bushing
Low-temperature
Type 670 seal head
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Category 2 & 3 Secondary Containment Seals
2609-2C,
Type C, Arrangement 2
High-TemperatureECS™
Isolation Bushing
High-temperature Type 609
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Category 2 & 3 Non-contactingSecondary Containment Seals2648-2N
Type A, Arrangement 2
28LD
Isolation Bushing
Type 48LP
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Category 3 Seal Types1648-3 Type A, Arrangement 1
Provided with appropriate documentation inaccordance with the API 682 Specification
Floatingbushing
Distributedflush
Sleeve hardcoating
(optional)
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316 SSMetal parts
Hastelloy™ C Springs
Fluoroelastomer secondary seals
Reaction bonded Silicon CarbideMating Ring
Floating bushing as standard
Sleeve hard coating (optional on API 682 seals)
Bushing retained by bolted follower plate
Distributed flush
Primary Face Carbon - standardTungsten Carbide - optional
Category 3 Seal Types1648-3Type A, Arrangement 1
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FeaturesSeal Flush
Test shows even flush around the mating ring directed towards the seal interface
Distributed Flushing
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Category 1, 2, & 3 Non-contactingGas-lubricated Seals
2800 Type A, Arrangement 3
Patentedspiral grooveDual mating ring design meets
API 682 design specifications
0 to 300 psig / 21 bar g
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Category 1, 2, & 3 Non-contactingGas-lubricated Seals2800HP Type A, Arrangement 3
Dual mating ring design conforms to API 682 design requirements
300 psig / 21 bar g to 600 psig / 41 bar g con
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API 682 2nd Edition / ISO21049
Piping Plans
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New Piping Plans
Plan 53’s - Arrangement 3, Contacting Wet (CW) Seals53a – traditional configuration53b – bladder accumulator53c – piston pot/ accumulator
Plan 65 – Arrangement 1 (CW)Plan 72 – Arrangement 2 w/ Containment Seal (CS)Plan 74 – Arrangement 3, Non-Contacting (NC) SealsPlan 75 – Arrangement 2 w/ Containment Seal (CS) Plan 76 – Arrangement 2 w/ Containment Seal (CS)
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Plan 53b (A.4.12)
All references are API682 2nd edition
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Plan 53B
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Plan 53c (A.4.12)
All references are API682 2nd edition
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Plan 53c (A.4.12)
Piston pot eliminates nitrogen contact with barrier liquidAllows for higher pressure applications Piston provides constant pressure ratio to seals (1.1:1)Configuration includes:
Piston potPressure indicatorPressure switchHeat exchangerLevel switch
All references are API682 2nd edition
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Plan 65 is new for ISO editionDesigned for single seal leakage management
Plan 65
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Plan 65
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Plan 72 (A.4.16)
All references are API682 2nd edition
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Plan 74 (A.4.17)
All references are API682 2nd edition
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Plan 75 (A.4.18)
All references are API682 2nd edition
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Plan 76 (A.4.19)
All references are API682 2nd edition
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API 682, 3rd Edition ISO21049Seal Codes
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Annex J: API 610 Codes
BTTFNB : Balanced Seal
T : Tandem Seals
T : Throttle Bushing
F : Viton vs Viton
N : Carbon vs Silicone Carbide
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Annex J: Codes
InformativeFour segment codeDifferent from 1st EditionDifferent from API 610
C1 A1 A 11category
arrangement flush
type
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Annex J (Seal Codes)New coding structure
First letter = Categorysecond letter = ArrangementThird letter = Seal TypeFourth letter(s) = Flush arrangement
Example is C3A2C1152 is Category 3 Type C seal in an arrangement 2 using Plans 11 and 52
Annex J: Codes
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Gland Plate Connections for Single Seals
1/20Flush Out (Plan 23 only)FO
1/2180Flush In (Plan 23 only)FI
3/890QuenchQ
3/8180DrainD
1/20FlushF
Size *LocationConnectionSymbol
Location:Horizontal Pumps: 0 degrees = Top Dead CentreVertical Pumps: “F” defines 0 degrees
* All sizes are NPT taper thread connections
Table 1
All references are API682 2nd edition
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Gland Plate Connections for Dual Seals
1/40Gas Barrier InGBI
1/2180Gas Barrier OutGBO
1/2180Containment Seal DrainCSD
1/20Containment Seal VentCSV
1/20Liquid Buffer/Barrier OutLBO
1/2180Liquid Buffer/Barrier InLBI
SizeLocationConnectionSymbol
* All sizes are NPT taper thread connections
Table 1
All references are API682 2nd edition
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What happen?
Demonstration
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54Continued...Continued...
API 682 SummaryOnly three arrangements
singledual unpressuriseddual pressurised
Testing on five fluid groups,
Propane, water, caustic, cold oil, hot oil
Specifies materials of construction
Secondary containment on all single seals
Forced circulation on dual seals
Full interchangeability
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Thank you for
Your Attention