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Contents Page
API Foreword ...................................................................................................................................................... ii
Foreword ............................................................................................................................................................. v
Introduction ........................................................................................................................................................ vi
1 Scope ...................................................................................................................................................... 1
2 Normative references ............................................................................................................................ 1
3 Terms and definitions ........................................................................................................................... 4
4 General ................................................................................................................................................. 10
4.1 Unit responsibility ............................................................................................................................... 10
4.2 Classification and designation .......................................................................................................... 10
5 Requirements ....................................................................................................................................... 18
5.1 Units ...................................................................................................................................................... 18
5.2 Statutory requirements ....................................................................................................................... 18
5.3 Requirements ....................................................................................................................................... 18
6 Basic design ........................................................................................................................................ 19
6.1 General ................................................................................................................................................. 19
6.2 Pump types .......................................................................................................................................... 23
6.3 Pressure casings ................................................................................................................................. 24
6.4 Nozzles and pressure casing connections ....................................................................................... 27
6.5 External nozzle forces and moments ................................................................................................ 30
6.6 Rotors ................................................................................................................................................... 37
6.7 Wear rings and running clearances .................................................................................................. 38
6.8 Mechanical shaft seals........................................................................................................................ 39
6.9 Dynamics .............................................................................................................................................. 42
6.10 Bearings and bearing housings ......................................................................................................... 56
6.11 Lubrication ........................................................................................................................................... 61
6.12 Materials ............................................................................................................................................... 61
6.13 Nameplates and rotation arrows ........................................................................................................ 66
7 Accessories ......................................................................................................................................... 67
7.1 Drivers .................................................................................................................................................. 67
7.2 Couplings and guards ......................................................................................................................... 70
7.3 Baseplates ............................................................................................................................................ 71
7.4 Instrumentation ................................................................................................................................... 74
7.5 Piping and appurtenances ................................................................................................................. 74
7.6 Special tools ........................................................................................................................................ 76
8 Inspection, testing, and preparation for shipment .......................................................................... 76
8.1 General ................................................................................................................................................. 76
8.2 Inspection ............................................................................................................................................. 77
8.3 Testing .................................................................................................................................................. 79
8.4 Preparation for shipment .................................................................................................................... 86
9 Specific pump types ............................................................................................................................ 87
9.1 Single-stage overhung pumps ........................................................................................................... 87
9.2 Between-bearings pumps (types BB1, BB2, BB3 and BB5) ........................................................... 88
9.3 Vertically suspended pumps (types VS1 through VS7) .................................................................. 93
10 Vendor's data ....................................................................................................................................... 99
10.1 General ................................................................................................................................................. 99
10.2 Proposals ........................................................................................................................................... 100
10.3 Contract data ..................................................................................................................................... 103
Annex A (informative) Specific speed and suction-specific speed ........................................................... 105