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  • BS EN ISO 21049 : 2004

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    PUMPS - SHAFT SEALING SYSTEMS FOR CENTRIFUGAL AND ROTARY PUMPS

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-2004

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Sealing systems
       4.1 Seal categories, types and arrangements
            4.1.1 General
            4.1.2 Seal categories
            4.1.3 Seal types
            4.1.4 Seal arrangements
            4.1.5 Seal orientations
       4.2 Objectives
       4.3 Specifying and/or purchasing a sealing system
    5 General
       5.1 Unit responsibility
       5.2 Dimensions
    6 Design requirements
       6.1 Common design requirements (all categories)
            6.1.1 General information
            6.1.2 Seal chamber and gland plate
            6.1.3 Cartridge seal sleeves
            6.1.4 Mating rings
            6.1.5 Flexible elements
            6.1.6 Materials
       6.2 Design requirements (category-specific)
            6.2.1 Category 1 seals
            6.2.2 Category 2 seals
            6.2.3 Category 3 seals
    7 Specific seal configurations
       7.1 Arrangement 1 seals
            7.1.1 Seal sleeves
            7.1.2 Seal chamber and gland plate
       7.2 Arrangement 2 seals
            7.2.1 General
            7.2.2 Seal sleeves
            7.2.3 Seal chamber and gland plates
            7.2.4 Contacting wet seals with a liquid buffer
                  fluid (2CW-CW)
            7.2.5 Seal chamber and gland plates for contacting wet
                  inner seal with a dry-running containment
                  seal (2CW-CS)
            7.2.6 Seal chamber and gland plates for non-contacting
                  inner seal with a dry-running containment
                  seal (2NC-CS)
       7.3 Arrangement 3 seals
            7.3.1 General
            7.3.2 Seal sleeves
            7.3.3 Seal chamber and gland plates
            7.3.4 Contacting wet seal configurations with a
                  liquid barrier fluid (3CW-FB, 3CW-FF, 3CW-BB)
            7.3.5 Standard seal types and arrangements for
                  non-contacting seal configurations with
                  a gas barrier fluid (3NC-FB, 3NC-FF, 3NC-BB)
    8 Accessories
       8.1 Auxiliary piping systems
       8.2 Mechanical seal flush/cooling systems (Group I)
       8.3 Quench systems (Group II)
       8.4 Cooling-water systems (Group III)
       8.5 Accessories and auxiliary system components
            8.5.1 Cyclone separator
            8.5.2 Flow control orifice
            8.5.3 Seal flush coolers
            8.5.4 Barrier/buffer fluid reservoirs
            8.5.5 Barrier/buffer-fluid selection criteria
       8.6 Barrier/buffer fluid and seal flush positive-circulating
            devices
            8.6.1 General
            8.6.2 Internal circulating device
            8.6.3 External circulating pump
            8.6.4 External seal flush systems
            8.6.5 Condensate collection reservoir
            8.6.6 Barrier/buffer-gas supply systems
    9 Instrumentation
       9.1 General
       9.2 Temperature-indicating gauges
       9.3 Thermowells
       9.4 Pressure gauges
       9.5 Switches
            9.5.1 Alarm, trip and control switches
            9.5.2 Pressure switches
            9.5.3 Level switches
            9.5.4 Flow switches
       9.6 Level indicators
       9.7 Flow instruments
            9.7.1 Flow indicators
            9.7.2 Flow meters
            9.7.3 Flow transmitters
       9.8 Relief valves
       9.9 Regulators
       9.10 Pressure amplifiers
    10 Inspection, testing and preparation for shipment
       10.1 General
       10.2 Inspection
       10.3 Testing
            10.3.1 Seal qualification testing
            10.3.2 Hydrostatic test for pressure-containing
                   mechanical seal parts and accessories
            10.3.3 Test of job seal by seal manufacturer
            10.3.4 Air test
            10.3.5 Test of job seal by pump manufacturer
       10.4 Preparation for shipment
    11 Data transfer
       11.1 General
       11.2 Proposal data
       11.3 Contract data
    Annex A (informative) Recommended seal selection procedure
    Annex B (informative) Typical materials standards for seal
            chamber and mechanical seal components
    Annex C (normative) Mechanical seal data sheets
    Annex D (informative) Mechanical seal codes
    Annex E (normative) Seal and pump vendor interface
            responsibilities
    Annex F (informative) Heat generation and heat soak calculations
    Annex G (normative) Standard flush plans and auxiliary hardware
    Annex H (informative) Inspector checklist for all seals
    Annex I (normative) Form for mechanical seal qualification test
    Annex J (normative) Mechanical seals data requirements form
    Bibliography

    Abstract - (Show below) - (Hide below)

    Provides requirements and gives recommendations for sealing systems for centrifugal and rotary pumps used in the petroleum, natural gas and chemical industries.

    General Product Information - (Show below) - (Hide below)

    Committee PSE/17
    Development Note Supersedes 02/705659 DC. (02/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    ASME PTC8.2 : 1990 PERFORMANCE TEST CODES - CENTRIFUGAL PUMPS
    ASME PV CODE 5 : 2017 BOILER AND PRESSURE VESSEL CODE - NONDESTRUCTIVE EXAMINATION
    ISO 9723:1992 Nickel and nickel alloy bars
    EN 10269:2013 STEELS AND NICKEL ALLOYS FOR FASTENERS WITH SPECIFIED ELEVATED AND/OR LOW TEMPERATURE PROPERTIES
    ISO 12725:1997 Nickel and nickel alloy castings
    ISO 15649:2001 Petroleum and natural gas industries Piping
    ISO 683-13:1974 Heat-treated steels, alloy steels and free-cutting steels Part 13: Wrought stainless steels
    ASME B16.1 : 2015 Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250
    ISO 3506-1:2009 Mechanical properties of corrosion-resistant stainless steel fasteners Part 1: Bolts, screws and studs
    CFR 40(PT60) APPENDIX : JUL 2017 PROTECTION OF ENVIRONMENT - ENVIRONMENTAL PROTECTION AGENCY
    ASTM B 575 : 2017 : REDLINE Standard Specification for Low-Carbon Nickel-Chromium-Molybdenum, Low-Carbon Nickel-Chromium-Molybdenum-Copper, Low-Carbon Nickel-Chromium-Molybdenum-Tantalum, Low-Carbon Nickel-Chromium-Molybdenum-Tungsten, and Low-Carbon Nickel-Molybdenum-Chromium Alloy Plate, Sheet, and Strip
    ISO 9725:2017 Nickel and nickel alloy forgings
    ASTM B 473 : 2007 Standard Specification for UNS N08020, UNS N08024, and UNS N08026 Nickel Alloy Bar and Wire
    EN 10088-3:2014 Stainless steels - Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes
    ISO 724:1993 ISO general-purpose metric screw threads Basic dimensions
    CFR 40(PT60) : JUL 2016 PROTECTION OF ENVIRONMENT - ENVIRONMENTAL PROTECTION AGENCY
    API 614 : 2008 LUBRICATION, SHAFT-SEALING AND OIL-CONTROL SYSTEMS AND AUXILIARIES
    EN 10213-2 : 1995 TECHNICAL DELIVERY CONDITIONS FOR STEEL CASTINGS FOR PRESSURE PURPOSES - PART 2: STEEL GRADES FOR USE AT ROOM TEMPERATURE AND ELEVATED TEMPERATURES
    ASME B73.2 : 2016 Specification for Vertical In-Line Centrifugal Pumps for Chemical Process
    ISO 6208:1992 Nickel and nickel alloy plate, sheet and strip
    API 5L : 2012 LINE PIPE
    ASME PV CODE 9 : 2017 BOILER AND PRESSURE VESSEL CODE - WELDING, BRAZING, AND FUSING QUALIFICATIONS - QUALIFICATION STANDARD FOR WELDING, BRAZING, AND FUSING PROCEDURES; WELDERS; BRAZERS; AND WELDING, BRAZING, AND FUSING OPERATORS
    ISO 2892:2007 Austenitic cast irons Classification
    ISO 262:1998 ISO general purpose metric screw threads Selected sizes for screws, bolts and nuts
    EN 10222-5:2017 STEEL FORGINGS FOR PRESSURE PURPOSES - PART 5: MARTENSITIC, AUSTENITIC AND AUSTENITIC-FERRITIC STAINLESS STEELS
    ASME B16.20 : 2012 METALLIC GASKETS FOR PIPE FLANGES
    EN 10250-4 : 1999 OPEN DIE STEEL FORGINGS FOR GENERAL ENGINEERING PURPOSES - PART 4: STAINLESS STEELS
    IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
    ASME PV CODE 8 DIV 1 : 2017 BOILER AND PRESSURE VESSEL CODE - RULES FOR CONSTRUCTION OF PRESSURE VESSELS DIVISION 1
    ISO 4200:1991 Plain end steel tubes, welded and seamless General tables of dimensions and masses per unit length
    ISO 2858:1975 End-suction centrifugal pumps (rating 16 bar) Designation, nominal duty point and dimensions
    NFPA 70 : 2017 NATIONAL ELECTRICAL CODE
    ASME PV CODE 8 DIV 2 : 2017 BOILER AND PRESSURE VESSEL CODE - RULES FOR CONSTRUCTION OF PRESSURE VESSELS DIVISION 2- ALTERNATIVE RULES
    ASME B31.3:2016 PROCESS PIPING
    API 526 : 2017 FLANGED STEEL PRESSURE-RELIEF VALVES
    ISO 286-2:2010 Geometrical product specifications (GPS) ISO code system for tolerances on linear sizes Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts
    ISO 13709:2009 Centrifugal pumps for petroleum, petrochemical and natural gas industries
    ISO 261:1998 ISO general purpose metric screw threads General plan
    ASME B16.5 : 2017 PIPE FLANGES AND FLANGED FITTINGS: NPS 1/2 THROUGH NPS 24 METRIC/INCH STANDARD
    ISO 7005-1:2011 Pipe flanges Part 1: Steel flanges for industrial and general service piping systems
    ASME PV CODE 8 DIV 3 : 2017 BPVC Section VIII-BOILER AND PRESSURE VESSEL CODE - RULES FOR CONSTRUCTION OF PRESSURE VESSELS - ALTERNATIVE RULES FOR CONSTRUCTION OF HIGH PRESSURE VESSELS
    AWS D1.1 : 2000 STRUCTURAL WELDING CODE - STEEL
    ISO 9327-5:1999 Steel forgings and rolled or forged bars for pressure purposes Technical delivery conditions Part 5: Stainless steels
    ASTM A 524 : 1996 Standard Specification for Seamless Carbon Steel Pipe for Atmospheric and Lower Temperatures
    ASME B1.20.1 : 2013(R2018) PIPE THREADS, GENERAL PURPOSE (INCH)
    EN 10213-4 : 1995 TECHNICAL DELIVERY CONDITIONS FOR STEEL CASTINGS FOR PRESSURE PURPOSES - PART 4: AUSTENITIC AND AUSTENITIC-FERRITIC STEEL GRADES
    ISO 3506-2:2009 Mechanical properties of corrosion-resistant stainless steel fasteners Part 2: Nuts
    NEMA 250 : 2014 ENCLOSURES FOR ELECTRICAL EQUIPMENT (1000 VOLTS MAXIMUM)
    ISO 3069:2000 End-suction centrifugal pumps Dimensions of cavities for mechanical seals and for soft packing
    ASME B73.1 : 2012 SPECIFICATION FOR HORIZONTAL END SUCTION CENTRIFUGAL PUMPS FOR CHEMICAL PROCESS
    ISO 1629:2013 Rubber and latices Nomenclature
    ASTM D 1418 : 2017 : REDLINE Standard Practice for Rubber and Rubber Latices—Nomenclature
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