AS/NZS 4059:1996

1 - AS/NZS 4059:1996 ANAESTHETIC MACHINES - NON-ELECTRICAL - FOR USE WITH HUMANS
4 - PREFACE
5 - CONTENTS
6 - 1 SCOPE
6 - 2 REFERENCED DOCUMENTS
6 - 3 DEFINITIONS
6 - 3.1 Anaesthetic machine
6 - 3.2 Anaesthetic vaporizer
6 - 3.3 Compliance
6 - 3.4 Flow control valve
7 - 3.5 Flowmeter
7 - 3.6 Fresh (common) gas outlet
7 - 3.7 Gas mixer
7 - 3.8 Machine gas piping
7 - 3.9 Minute volume
7 - 3.10 Pressure regulator
7 - 3.11 Vaporizer chamber
7 - 3.12 Working pressure
7 - 4 BASIC REQUIREMENTS FOR ANAESTHETIC MACHINES
7 - 4.1 General
7 - 4.2 Mobile anaesthetic machines
7 - 4.3 Controls and gauges
7 - 4.4 Colour coding
7 - 4.5 Built-in monitors
8 - 4.6 Material compatibility with gases and mixtures used in anaesthesia
8 - 4.7 Stability
8 - 4.8 Nominal working pressure
8 - 4.9 Percentage of oxygen when air is used
8 - 4.10 Supply of carbon dioxide
8 - 5 MEDICAL GAS CYLINDER CONNECTIONS
9 - 6 PIPELINE INLET CONNECTIONS
9 - 7 PRESSURE GAUGES AND PRESSURE INDICATORS
9 - 7.1 General
9 - 7.2 Gas cylinder yoke
9 - 7.3 Gases supplied by pipeline
9 - 7.4 Graduation
9 - 7.5 Maximum permitted error
9 - 7.6 Design and construction
10 - 7.7 Gauges with analogue scales
11 - 8 PRESSURE REGULATORS
11 - 8.1 General
11 - 8.2 Relief valve
11 - 8.3 Gas supply
11 - 8.4 Failure or malfunction
11 - 8.5 Diaphragm
11 - 9 MACHINE GAS PIPING
11 - 9.1 General
11 - 9.2 Leakage
12 - 9.3 Identification
12 - 9.4 Compatibility
12 - 10 FLOW CONTROL VALVES
12 - 10.1 General
12 - 10.2 Flow maintenance
12 - 10.3 Rotary flow adjustment controls
12 - 10.4 Leakage
12 - 10.5 Position
12 - 10.6 Identification
12 - 10.7 Safety
12 - 10.8 Flow control knobs
13 - 10.9 Flow control system with threaded needle valves
13 - 11 FLOWMETERS
13 - 11.1 General
13 - 11.2 Graduation
14 - 11.3 Accuracy of gradations
14 - 11.4 Delivery of gases into a common manifold
14 - 11.5 Position of oxygen flowmeter
14 - 11.6 Visibility of flowmeter floats
14 - 11.7 Point of reference
14 - 12 GAS MIXERS
14 - 12.1 General
14 - 12.2 Identification of gases
14 - 12.3 Cross-contamination
15 - 13 VAPORIZERS
15 - 13.1 General
15 - 13.2 Use of conical connectors
15 - 13.3 Direction of gas flow
15 - 13.4 Filling of vaporizers
15 - 13.5 Concentration-calibrated vaporizers
15 - 13.5.1 Gas flow
15 - 13.5.2 Control
15 - 13.5.3 Contamination
15 - 13.5.4 Liquid level indicator
15 - 13.5.5 Rotary dials
15 - 13.5.6 Vaporizer accuracy
15 - 13.5.6.1 Without applied back pressure
16 - 13.5.6.2 With applied back pressure
16 - 13.5.7 Discharge of liquid from filled vaporizer
16 - 13.5.8 Labelling
16 - 13.5.9 Marking
16 - 13.6 Non-calibrated vaporizers
16 - 14 FRESH (COMMON) GAS OUTLET
16 - 14.1 General
16 - 14.2 Supporting structures
16 - 14.2.1 For conical connectors
17 - 14.2.2 For screw-threaded weight-bearing connectors
17 - 15 GAS POWER OUTLETS
17 - 16 OXYGEN FLUSH
17 - 16.1 General
17 - 16.2 ‘Off’ position
17 - 16.3 Oxygen delivery
17 - 16.4 Oxygen flush control
17 - 17 OXYGEN SUPPLY FAILURE
17 - 17.1 Oxygen supply failure alarm
17 - 17.1.1 General
17 - 17.1.2 Shutting off or resetting alarm
17 - 17.1.3 Gas-powered alarm
17 - 17.1.4 Visual alarm
18 - 17.2 Cut- off devices for gases other than oxygen
18 - 18 INFORMATION TO BE SUPPLIED BY THE MANUFACTURER
18 - 19 INSTRUCTION MANUAL
20 - APPENDIX A - COLOURS FOR COLOUR CODING OF VAPORIZERS
20 - A1 SCOPE
20 - A2 COLOURS
21 - APPENDIX B - NOTES ON COMBUSTIBILITY AND COMPATIBILITY OF MATERIALS USED IN ANAESTHETIC MACHINES
21 - B1 SCOPE
21 - B2 COMBUSTIBILITY OF MATERIALS IN OXYGEN AND NITROUS OXIDE
21 - B3 COMPATIBILITY OF MATERIALS WITH ANAESTHETIC AGENTS
22 - APPENDIX C - METHOD OF TEST FOR STATIC STABILITY
22 - C1 SCOPE
22 - C2 PRINCIPLE
22 - C3 APPARATUS
22 - C4 PROCEDURE
22 - C5 REPORT
23 - APPENDIX D - METHOD OF TEST FOR MOBILE STABILITY
23 - D1 SCOPE
23 - D2 PRINCIPLE
23 - D3 APPARATUS
23 - D4 PROCEDURE
23 - D5 REPORT
24 - APPENDIX E - METHOD OF TEST FOR CROSS- CONTAMINATION
24 - E1 SCOPE
24 - E2 PRINCIPLE
24 - E3 APPARATUS
24 - E4 PROCEDURE
24 - E4.1 Cross-contamination from gas source 1 to gas source 2
25 - E4.2 Cross-contamination from gas source 2 to gas source 1
25 - E5 REPORT
26 - APPENDIX F - METHOD OF TEST FOR VAPORIZER ACCURACY WITHOUT APPLIED BACK PRESSURE
26 - F1 SCOPE
26 - F2 PRINCIPLE
26 - F3 APPARATUS AND MATERIALS
26 - F4 PROCEDURE
27 - F5 REPORT
28 - APPENDIX G - METHOD OF TEST FOR VAPORIZER ACCURACY WITH APPLIED BACK PRESSURE
28 - G1 SCOPE
28 - G2 PRINCIPLE
28 - G3 APPARATUS AND MATERIALS
28 - G4 PROCEDURE
29 - G5 REPORT
30 - APPENDIX H - METHOD OF FILLING THE VAPORIZER PRIOR TO TESTING FOR LIQUID DISCHARGE
30 - H1 SCOPE
30 - H2 PRINCIPLE
30 - H3 APPARATUS
30 - H4 PROCEDURE
30 - H4.1 Fillers into which anaesthetic agent is poured directly from a bottle
30 - H4.2 Fillers where the vaporizer is directly connected to the bottle of anaesthetic agent (agent-specific filling system)

Specifies the basic requirements for anaesthetic machines and associated components up to and including the fresh (common) gas outlet, for use with humans. Requirements are also included for anaesthetic vaporizers intended for incorporation into anaesthetic machines. Does not apply to intermittent-flow anaesthetic machines which deliver gas to the breathing system at varying rates in response to the patient's inspiratory efforts, and to dental nitrous oxide-oxygen analgesia machines. This Standard is based on ISO 5358:1992.

This Standard specifies basic requirements for anaesthetic machines and associated components up to and including the fresh (common) gas outlet, for use with humans. It includes requirements for anaesthetic vaporizers intended for incorporation into anaesthetic machines.This Standard does not apply to the following:(a) Anaesthetic machines which depend primarily on electric or electronic means for control or proper functioning.(b) Intermittent-flow anaesthetic machines which only deliver gas to the breathing system at varying rates in response to the patient's inspiratory efforts.(c) Dental nitrous oxide-oxygen analgesia machines.

First published in Australia as AS 4059-1992 Jointly revised and designated AS/NZS 4059:1996