1 Scope
This standard specifies the technical requirements for the design and construction of turbo- and related types of compressors used in the process industry. It also details the documentation requirements.
2 Field of Application
This standard applies to radial and axial flow turbo-compressors. It covers the minimum requirements for such compressors handling air or gas, and which have a specific compression work of more than 25000 J/kg. It is recommended that this standard be used for other turbo-compressors if this standard are required for the particular application.
This standard also covers certain requirements for compressor drivers, drive equipment, lubrication and sealing liquid systems, controls, instrumentation and auxiliary equipment.
The compressors to which this standard applies are not normally used for critical process applications in refineries.
3 ●References
ISO 262 ISO General Purpose Metric Screw Threads - Selected Sizes for Screws, Bolts and Nuts
ISO 898-1 Mechanical Properties of Fasteners - Part I: Bolts, Screws and Studs
ISO 1000 SI Units and Recommendations for the Use of Their Multiples and of Certain Other Units
ISO 1219 Fluid Power Systems and Components - Graphic Symbols
ISO 3511 Process Measurement Control Functions and Instrumentation - Symbolic Representation Part 1: Basic Requirements; Part 2: Extension of Basic Requirements; Part 3: Detailed Symbols for Instrument Interconnection Diagrams
ISO 3989-1 Acoustics - Measurement of Airborne Noise Emitted by Compressor Units Including Prime Movers - Part 1: Engineering Method for Determination of Sound Power Levels
ISO 5389 Turbocompressors - Performance Test Code
IEC 79 Electrical Apparatus for Explosive Gas Atmospheres
IEC 85 Thermal Evaluation and Classification of Electrical Insulation
VDI 2056 Verein Deutscher lngenieure: BeurteilungsmarJstlbefiir mechanische Schwingungen von Maschinen, VDI Richtlinie 2056, VDI GmbH Dusseldorf (D) 1964
4 ●Unit System
SI units (i.e. international system of units) are used throughout this standard (see ISO 1000).
However, in addition to SI units, this standard also uses some non-S1 units accepted by ISO 1000. These units are as follows:
For pressure: bar (1 bar=105 Pa)
For volume: Litre (1 Litre=10-3 m3)
For time: min(1 min=60 s)
For time: h (1 h=3.6×103s)
For rotational speed: r/min (1 r/min=2π/60 rad/s)
5 Definitions
Foreword III
ISO Foreword VI
0 Introduction VII
1 Scope
2 Field of Application
3 ●References
4 ●Unit System
5 Definitions
6 ●Gas Properties
7 Basic Requirements
7.1 General
7.2 The Enquiry
7.3 The Proposal
7.4 Ratings
7.5 ●Noise Limitations
8 Compressor
8.1 General
8.2 Casing
8.3 External Forces and Moments
8.4 ●Bolted Connection
8.5 Casing Apertures for Pipe Connections
8.6 Rotor
8.7 Diaphragms, Diffusers, Guide Vane Carriers and Attached Coolers
8.8 Labyrinth Seal
8.9 Thrust Balance Piston and Balancing Line
8.10 Bearing and Bearing Housings
8.11 Shaft Seals
8.12 ●Critical Speeds
8.13 ●Vibration
8.14 Balance
8.15 Baseplate or Soleplate
8.16 Injection Devices
8.17 Rating Plates and Rotation Arrows
9 Drivers and Drive Equipment
9.1 Drivers
9.2 Gears
9.3 Couplings
10 Auxiliary Equipment
10.1 General
10.2 Gas Coolers
10.3 Silencers
10.4 Separators and Traps
10.5 Pipework (General)
10.6 Process Gas Pipework
10.7 Auxiliary Pipework
11 Lubrication and Seal Liquid Systems
11.1 General
11.2 Lubricant Reservoirs
11.3 Pumps and Drivers
11.4 Filters
11.5 Coolers
11.6 Overhead Tanks
11.7 Seal liquid Drain Traps
11.8 Accumulators
11.9 Schematics
12 Control and Instrumentation
12.1 General
12.2 Compressor Control Systems
12.3 Antisurge Control
12.4 Instrument Panel
12.5 Instruments
12.6 Normal Instrumentation
13 Data Sheets
Annex A (Informative) Instructions Subject to Agreements in the Contract
A1 Inspection and Tests
A2 Preparation for Shipment
A3 Erection and Commissioning
A4 Documentation
Annex B (Normative) Data Sheets
