Standard

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AS 2788:2021

[Current]

Adopts and modifies ISO 4414:2010, which specifies general rules and safety requirements for pneumatic fluid power systems and components used on machinery as defined by AS/NZS 4024.1201.Deals with all significant hazards associated with pneumatic fluid power systems and specifies principles to apply in order to avoid those hazards when the systems are put to their intended use.Applies to the design, construction and modification of systems and their components.KEYWORDS: pneumatic fluid power; rules; safety

Published: 29/01/2021

Pages: 38

Table of contents

Cited references

Content history

Table of contents

Header

About this publication

Preface

Foreword

Introduction

1 Scope

2 Normative references

3 Terms and definitions

4 List of significant hazards

5 General rules and safety requirements

5.1 General

5.1.1

5.1.2

5.1.3

5.1.4

5.2 Basic requirements for the design and specification of pneumatic systems

5.2.1 Component selection

5.2.1.1

5.2.1.2

5.2.1.3

5.2.2 Unintended pressures

5.2.2.1

5.2.2.2

5.2.2.3

5.2.2.4

5.2.2.5

5.2.2.6

5.2.3 Mechanical movements

5.2.4 Noise

5.2.5 Leakage

5.2.6 Operational and functional requirements for pneumatic systems

5.2.7 Control or energy supply

5.2.8 Positive isolation from energy sources

5.2.9 Location of components and controls

5.2.10 Unexpected start-up

5.2.11 Uncontrolled actuator movement

5.2.12 Airborne hazardous substances

5.3 Additional requirements

5.3.1 Site conditions and operating environment

5.3.2 Installation, use and maintenance of components, piping and assemblies

5.3.2.1 Replacement

5.3.2.2 Lifting provisions

5.3.3 Cleaning and painting

5.3.3.1

5.3.3.2

5.3.4 Preparation for transportation

5.3.4.1 Identification of piping

5.3.4.2 Packaging

5.3.4.3 Protection of openings

5.4 Specific requirements for components and controls

5.4.1 Air motors and semi-rotary actuators

5.4.1.1 Protection

5.4.1.2 Mounting

5.4.1.3 Load and speed considerations

5.4.2 Cylinders

5.4.2.1 Resistance to buckling

5.4.2.2 Loading and overrunning

5.4.2.3 Mounting ratings

5.4.2.4 Resistance to shock and vibration

5.4.2.5 Mounting fasteners

5.4.2.6 Alignment

5.4.2.7 Adjustable stroke end stops

5.4.2.8 Piston rod material, finish and protection

5.4.2.9 Air vent

5.4.3 Valves

5.4.3.1 Selection

5.4.3.2 Mounting

5.4.3.3 Manifolds

5.4.3.3.1 Surface flatness and finish

5.4.3.3.2 Distortion

5.4.3.3.3 Mounting

5.4.3.3.4 Internal passages

5.4.3.4 Valve control mechanisms and related operating devices

5.4.3.4.1 Mechanically and manually operated valves

5.4.3.4.2 Electrically operated valves

5.4.3.4.2.1 Electrical connections

5.4.3.4.2.2 Terminal block housing

5.4.3.4.2.3 Solenoids

5.4.3.4.2.4 Manual override

5.4.3.5 Pressure-relief valves

5.4.3.6 Quick-exhaust valves

5.4.3.7 Flow-control valves

5.4.3.8 Three-position valves

5.4.4 Air-preparation components

5.4.4.1 General

5.4.4.2 Filtration

5.4.4.2.1 General

5.4.4.2.2 Nominal filtration rating

5.4.4.2.3 Deterioration of filter performance

5.4.4.2.4 Provisions for maintenance

5.4.4.2.5 Drains

5.4.4.3 Lubrication

5.4.4.3.1 Application

5.4.4.3.2 Compatibility of lubricating fluids

5.4.4.3.3 Lubricators

5.4.4.4 Air drying

5.4.4.4.1

5.4.4.4.2

5.4.4.5 Shielding of air preparation components

5.4.4.5.1

5.4.4.5.2

5.4.5 Piping and fluid passages

5.4.5.1 General requirements

5.4.5.1.1

5.4.5.1.2

5.4.5.1.3

5.4.5.1.4

5.4.5.1.5

5.4.5.2 Piping layout

5.4.5.2.1

5.4.5.2.2

5.4.5.3 Piping identification, location and mounting

5.4.5.3.1

5.4.5.3.2

5.4.5.4 Foreign matter

5.4.5.5 Support of tubes

5.4.5.5.1

5.4.5.5.2

5.4.5.5.3

5.4.5.6 Piping between assemblies

5.4.5.7 Piping across access ways

5.4.5.8 Quick-action couplings

5.4.5.9 Hose assemblies

5.4.5.9.1 General requirements

5.4.5.9.2 Installation

5.4.5.10 Removal of piping

5.4.5.11 Failure of hose assemblies and plastic piping

5.4.5.11.1

5.4.5.11.2

5.4.6 Control systems

5.4.6.1 Unintended movement

5.4.6.2 Pressure regulation

5.4.6.2.1

5.4.6.2.2

5.4.6.2.3

5.4.6.3 Adjustable control mechanisms

5.4.6.3.1

5.4.6.3.2

5.4.6.3.3

5.4.6.4 Stability

5.4.6.5 Tamper resistance

5.4.6.6 Manual control levers

5.4.6.7 Manual set-up controls

5.4.6.8 Two-hand controls

5.4.6.9 Safe position

5.4.6.10 Control systems with servo or proportional valves

5.4.6.10.1 Override systems

5.4.6.10.2 Additional devices

5.4.6.11 Monitoring of system parameters

5.4.6.12 Control of multiple devices

5.4.6.13 Control of sequencing by position sensing

5.4.6.14 Location of controls

5.4.6.14.1 Manual controls

5.4.6.14.2 Enclosures and compartments

5.4.6.15 Emergency controls

5.4.7 Diagnostics and monitoring

5.4.7.1 Pressure measurement

5.4.7.1.1

5.4.7.1.2

5.4.7.2 Electrical supply indicators

5.4.8 Pneumatic silencers

5.4.9 Seals and sealing devices

5.4.10 Receivers and surge tanks

6 Verification of safety requirements and acceptance testing

7 Information for use

7.1 General requirements

7.2 Final information

7.3 Maintenance and operating data

7.3.1

7.3.2

7.4 Marking and identification

7.4.1 Components

7.4.1.1

7.4.1.2

7.4.1.3

7.4.1.4

7.4.2 Components within a system

7.4.2.1

7.4.2.2

7.4.3 Ports and conductors

7.4.3.1

7.4.3.2

7.4.3.3

7.4.3.4

7.4.4 Valve control mechanisms

7.4.4.1

7.4.4.2

7.4.5 Internal devices

7.4.6 Function plate

8 Identification statement (reference to this International Standard)

Annex A

Annex B

B.1 General requirements

B.1.1 Description of equipment

B.1.2 Commissioning

B.1.3 Names and contact information of parties involved

B.1.4 Delivery location

B.1.5 Pneumatic system

B.1.6 Fluid (air) characteristics; see 5.2.6

B.1.7 Site or operating environment conditions; see 5.3.1

B.1.8 Final information; see 7.2

B.1.9 System requirements; see 5.2.6

B.2 Component requirements

B.2.1 Air motors and semi-rotary actuators; see 5.4.1

B.2.2 Cylinders; see 5.4.2

B.2.3 Directional control valves; see 5.4.3

B.2.4 Quick-exhaust valves; see 5.4.3

B.2.5 Miscellaneous valves; see 5.4.3

B.2.6 Air preparation components; see 5.4.4

B.2.7 Piping; see 5.4.5

B.2.8 Auxiliary compressors

B.2.9 Accessories

B.2.10 Other components

B.2.11 Component reliability

Bibliography

Appendix ZZ

ZZ.1 Scope

ZZ.2 Variations

Cited references in this standard

Content history

ISO 4414:2010

[Current]

AS 2788-2002

[Superseded]

DR AS 2788:2019

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