This standard specifies minimum requirements for centrifugal pumps, including pumps running in reverse as hydraulic power recovery turbines, for use in petroleum, petrochemical and gas industries.
This standard is applicable to overhung pumps, between-bearings pumps and vertically suspended pumps (see Table 1). Chapter 8 provides requirements applicable to specific types of pump. All other clauses of this standard are applicable to all pump types. Illustrations are provided of the various specific pump types and the designations assigned to each specific type.
This standard is not applicable to sealless centrifugal pumps.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding amending errors in the text), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of the normative document is applicable. For undated references, the latest edition of the normative document applies
GB/T 193 General Purpose Metric Screw Threads - General Plan (GB/T 193-2003, ISO 261: 1998, MOD)
GB/T 196 General Purpose Metric Screw Threads - Basic Dimensions (GB/T 196-2003, ISO 724: 1993, MOD)
GB/T 197 General Purpose Metric Screw Threads-Tolerances (GB/T 197-2003, ISO 965-1: 1998, MOD)
GB 755 Rotating Electrical Machines - Rating and Performance (GB 755-2000, idt IEC 60034-1: 1996)
GB/T 1800.1 Limits and Fits - Bases - Part 1: Terminology (GB/T 1800.1-1997, neq ISO 286-1: 1988)
GB/T 1800.2 Limits and Fits - Bases - Part 2: Basic Rules of Tolerances, Deviations and Fits (GB/T 1800.2-1998, neq ISO 286-1: 1988)
GB/T 1800.3 Limits and Fits - Bases - Part 3: Numerical Values Tables of Standard Tolerances and Fundamental Deviations (GB/T 1800.3-1998, neq ISO 286-1: 1988)
GB/T 1800.4 Limits and Fits - Tables of Standard Tolerance Grades and Limit Deviations for Holes and Shafts (GB/T 1800.4-1999, eqv ISO286-2: 1988)
GB/T 2516 General Purpose Metric Screw Threads - Limit Deviations (GB/T 2516-2003, ISO 965-3: 1998, MOD)
GB/T 3216 Rotodynamic Pumps - Hydraulic Performance Acceptance Tests - Grades 1 and 2" (GB/T 3216-2005, ISO 9906: 1999, MOD)
GB 3836.1 Electrical Apparatus for Explosive Gas Atmospheres - Part 1: General Requirements (GB 3836.1-2000, eqv IEC60079-0: 1998)
GB 3836.2 Electrical Apparatus for Explosive Gas Atmospheres - Part 2: Flameproof Enclosure d (GB 3836.2-2000, eqv IEC60079-1: 1990)
GB 3836.3 Electrical Apparatus for Explosive Gas Atmospheres - Part 3: Increased Safety "e" (GB 3836.3-2000, eqv IEC 60079-7: 1990)
GB 3836.4 Electrical Apparatus for Explosive Gas Atmospheres - Part 4: Intrinsic safety "i" (GB 3836.4-2000, eqv IEC60079-11: 1999)
GB 3836.5 Electrical Apparatus for Explosive Gas Atmospheres - Part 5: Pressurized Enclosures "p" (GB 3836.5-2004, IEC 60079-2: 2001, MOD)
GB 3836.6 Electrical Apparatus for Explosive Gas Atmospheres - Part 6: Oil-immersion "o" (GB 3836.6-2004, IEC 60079-6: 1995, IDT)
GB 3836.7 Electrical Apparatus for Explosive Gas Atmospheres - Part 7: Power Filling "q" (GB 3836.7-2004, IEC 60079-5: 1997, IDT)
GB 3836.8 Electrical Apparatus for Explosive Atmospheres - Part 8: Type of Protection "n" (GB 3836.8-2003, IEC 60079-15: 2001, MOD)
GB 3836.9 Electrical Apparatus for Explosive Gas Atmosphere - Part 9: Encapsulation "m" (GB 3836.9-2006, IEC 60079-18: 2004, IDT)
GB 3836.11 Electrical Apparatus for Explosive Atmospheres - Method of Test for Ascertainment of Maximum Experimental Safe Gap (GB 3836.11-1991, eqv IEC 60079-1A: 1975)
GB 3836.12 Electrical Apparatus for Explosive Atmospheres - Classification of Gases or Vapors with Air According to their Maximum Experimental Safe Gaps and Minimum Igniting Currents (GB 3836.12-1991, eqv IEC 60079-12: 1978)
GB 3836.13 Electrical Apparatus for Explosive Gas Atmospheres - Part 13: Repair and Overhaul for Apparatus Used in Explosive Gas Atmospheres (GB 3836.13-1997, neq IEC 60079-19: 1993)
GB 3836.14 Electrical Apparatus for Explosive Gas Atmospheres - Part14: Classification of Hazardous Areas (GB 3836.14-2000, idt IEC 60079-10: 1995)
GB 3836.15 Electrical Apparatus for Explosive Gas Atmospheres - Part15: Electrical Installations in Hazardous Areas(other than Mines) (GB 3836.15-2000, eqv IEC 60079-14: 1996)
GB 3836.16 Electrical Apparatus for Explosive Gas Atmospheres - Part 16: Inspection and Maintenance of Electrical Installation (other than Mines) (GB 3836.16-2006, IEC 60079-17: 2002, IDT)
GB 3836.17 Electrical Apparatus for Explosive Gas Atmospheres - Part 17: Construction and Use of Rooms or Buildings Protected by Pressurization (GB 3836.17-2007, IEC 60079-13: 1982, IDT)
GB/T 4604 Rolling Bearings - Radial Internal Clearance (GB/T 4604-2006, ISO 5753: 1991, MOD)
GB/T 5332 Method of Test for Ignition Temperature of Flammable Liquids and Gases (GB/T 5332-2007, IEC 60079-4: 1975, IDT)
GB/T 6557 Mechanical Vibration - Methods and Criteria for the Mechanical Balancing of Flexible Rotors (GB/T 6557-1999, idt ISO 11342: 1998)
GB/T 7306.1~7306.2 Pipe Threads with 55 Degree Thread Angle where Pressure-tight Joints are Made on the Threads (GB/T 7306.1~7306.2-2000, eqv ISO 7-1: 1994, Pipe Threads where Pressure-tight Joints are Made on the Threads - Part 1: Dimensions, Tolerances and Designation)
GB/T 7307 Pipe Threads with 55 Degree Thread Angle where Pressure-tight Joints are Not Made on the Threads (GB/T 7307-2001, eqv ISO 228-1: 1994, Pipe Threads where Pressure-tight Joints are Not Made on the Threads - Part 1: Dimensions, Tolerances and Designation)
GB/T 9114 Hubbed Screwed Steel Pipe Flanges with Raised Face (GB/T 9114-2000, ISO 7005-1: 1992, Metallic Flanges - Part 1: Steel Flanges, NEQ)
GB/T 9144 General Purpose Metric Screw Threads - Preferable Plan (GB/T 9144-2003, ISO 262: 1998, MOD)
GB/T 9145 General Purpose Metric Screw Threads - Limits of Sizes for the Screw Threads of Medium Quality and Preferable Plan (GB/T 9145-2003, ISO 965-3: 1998, MOD)
GB/T 9239.1 Mechanical Vibration-Balance Quality Requirements for Rotors in a Constant (Rigid) State-Part 1: Specification and Verification of Balance Tolerances (GB/T 9239.1-2006, ISO 1940-1: 2003, IDT)
GB/T 17241.1 Synoptic Table for Cast Iron Pipe Flanges (GB/T 17241.1-1998, neq ISO 7005-2: 1988, Metallic Flanges - Part 2: Cast Iron Flanges)
GB/T 17241.2 Cast Iron Pipe Blank Flanges (GB/T 17241.2-1998, neq ISO 7005-2: 1988, Metallic Flanges - Part 2: Cast Iron Flanges)
GB/T 17241.3 Hubbed Threaded Cast Iron Pipe Flanges (GB/T 17241.3-1998, ISO 7005-2: 1988, Metallic Flanges - Part 2: Cast Iron Flanges, NEQ)
GB/T 17241.4 Hubbed Slip-on-welding and Hubbed Socket Welding Cast Iron Pipe Flanges (GB/T 17241.4-1998, neq ISO 7005-2: 1988, Metallic Flanges - Part 2: Cast Iron Flanges)
GB/T 17241.5 Loose Hubbed Cast Iron Pipe Flanges for Lapped Pipe End (GB/T 17241.5-1998, neq ISO 7005-2: 1988, Metallic Flanges - Part 2: Cast Iron Flanges)
GB/T 17241.6 Integral Cast iron Pipe Flanges (GB/T 17241.6-1998, neq ISO 7005-2: 1988, Metallic Flanges - Part 2: Cast Iron Flanges)
GB/T 17241.7 Specifications for Cast Iron Pipe Flanges (GB/T 17241.7-1998, neq ISO 7005-2: 1988, Metallic Flanges - Part 2: Cast Iron Flanges)
GB/T 20801.1~20801.6 Pressure Piping Code-Industrial Piping (GB/T 20801.1~20801.6-2006, ISO 15649: 2001, Petroleum and Natural Gas Industries - Piping, NEQ)
ISO 281 Rolling Bearings - Dynamic Load Ratings and Rating Life
ISO 8501 (All Parts), Preparation of Steel Substrates before Application of Paints and Related Products - Visual Assessment of Surface Cleanliness
ISO 10436 Petroleum and Natural Gas Industries - General-Purpose Steam Turbines for Refinery Service
ISO 10438 (All Parts), Petroleum and Natural Gas Industries - Lubrication, Shaft - Sealing and Control C Oil Systems and Auxiliaries
ISO 10441 Petroleum and Natural Gas Industries - Flexible Couplings for Mechanical Power Transmission - Special Purpose Applications
ISO 14691 Petroleum and Natural Gas Industries - Flexible Couplings for Mechanical Power Transmission - General Purpose Applications
ISO 21049 Pumps - Shaft Sealing Systems for Centrifugal and Rotary Pumps
ABMA 7 Shaft and Housing Fits for Metric Radial Ball and Roller Bearings
AGMA 9000 Flexible Couplings - Potential Unbalance Classification
AGMA 9002 Bores and Keyways for Flexible Couplings
API 541 Form-wound Squirrel-cage Induction Motors - 250 Horsepower and Larger
API 611 General Purpose Steam Turbines for Refinery Service
API 670 Non-contacting Vibration and Axial Position Monitoring System
API 671 Special-purpose Couplings for Refinery Service
API 677 General-purpose Gear Units for Petroleum, Chemical and Gas Industry Services
ASME B1.1 Unified Inch Screw Threads, UN and UNR Thread Form
ASME B15.1 Safety Standard for Mechanical Power Transmission Apparatus
ASME B16.1 Cast Iron Pipe Flanges and Flanged Fittings Classes 25, 125 and 250
ASME B16.5 Pipe Flanges and Flanged Fittings NPS 1/2 Through NPS 24
ASME B16.11 Forged Fittings, Socket-welding and Threaded
ASME B17.1 Keys and Keyseats
IEEE 841 Standard for Petroleum and Chemical Industry - Severe Duty Totally Enclosed Fan-cooled (TEFC)
Squirrel Cage Induction Motors - Up to and Including 370 Kw (500hp)
NFPA 70 National Electrical Code Handbook
3 Terms and Definitions
For the purposes of this standard, the following terms and definitions apply
3.1
Axially split
Split with the principal joint parallel to the shaft centerline.
3.2
Barrel pump
Horizontal pump of the double-casing type.
3.3
Barrier fluid
Fluid, at a higher pressure than the process pressure being sealed, introduced between pressurized dual (double) mechanical seals to completely isolate the pump process liquid from the environment.
3.4
Best efficiency point (BEP)
Flowrate at which a pump achieves its highest efficiency.
3.5
Buffer fluid
Fluid, at a lower pressure than the process pressure being sealed, used as a lubricant or buffer between unpressurized dual (tandem) mechanical seals.
