AS 2896-2011

1-AS 2896-2011 MEDICAL GAS SYSTEMS-INSTALLATION AND TESTING OF NON-FLAMMABLE MEDICAL GAS PIPELINE SYSTEMS
4-PREFACE
5-CONTENTS
7-FOREWORD
8-SECTION 1 SCOPE AND GENERAL
8-1.1 SCOPE
8-1.2 APPLICATION
9-1.3 REFERENCED DOCUMENTS
9-1.4 DEFINITIONS
9-1.4.1 Alarm system
9-1.4.2 Boom
9-1.4.3 Central bulk gas supply (central supply)
9-1.4.4 Column
9-1.4.5 Connector
9-1.4.6 Control equipment
9-1.4.7 Coupler
9-1.4.8 Cryogenic liquid system
9-1.4.9 Design flow rate
10-1.4.10 Emergency gas supply
10-1.4.11 Emergency power supply (uninterruptible power supply)
10-1.4.12 Essential power supply
10-1.4.13 Extra-low voltage (ELV)
10-1.4.14 Ferrule
10-1.4.15 Fixed secondary equipment (FSE)
10-1.4.16 Gas specific
10-1.4.17 Hose
10-1.4.18 Hospital-accredited representative
10-1.4.19 Isolating valve (shut-off valve)
10-1.4.20 Line pressure safety valve
10-1.4.21 Medical air
10-1.4.22 Medical air compressor system
10-1.4.23 Medical gas pipeline system
11-1.4.24 Non-return valve
11-1.4.25 Normal power supply
11-1.4.26 Occluded suction
11-1.4.27 Pedestal
11-1.4.28 Pendant
11-1.4.29 Pipeline distribution system
11-1.4.30 Primary gas supply
11-1.4.31 Primary pressure safety valve
11-1.4.32 Pressure regulator
11-1.4.33 Secondary gas supply
11-1.4.34 Self-sealing valve
11-1.4.35 Service facility
11-1.4.36 Service head
12-1.4.37 Sleeve index system (SIS)
12-1.4.38 Source of gas supply
12-1.4.39 Special care locations
12-1.4.40 Suction system
12-1.4.41 Surgical tool air
12-1.4.42 Terminal unit
12-1.4.43 Wall ducting
13-SECTION 2 SOURCE OF SUPPLY
13-2.1 GENERAL
13-2.2 SOURCE OF SUPPLY
13-2.3 PROVISION IN CASE OF FAILURE OF SUPPLY
13-2.3.1 Special care locations
13-2.3.2 Cryogenic liquid systems
14-2.4 CYLINDER SUPPLY SYSTEM
14-2.4.1 General
14-2.4.2 Manifold
15-2.4.3 Manifold isolation
15-2.4.4 Manifold reset
15-2.4.5 Manifold headers
16-2.4.6 Manifold control panel
16-2.4.7 Cylinder racks
17-2.4.8 Marking of maximum working pressure on the manifold
17-2.4.9 Cylinder lead
17-2.4.10 Emergency gas supply
18-2.5 PRESSURE REGULATORS
18-2.6 DESIGN OF GAS CONTROL SYSTEMS
19-2.7 PRESSURE RELIEF VALVES
19-2.7.1 Primary pressure relief valve
19-2.7.2 Line pressure relief valve
19-2.7.3 Exhausts
19-2.8 CRYOGENIC SYSTEMS
19-2.8.1 General
20-2.8.2 Secondary supply
20-2.8.3 Emergency supply
20-2.8.4 Primary main check valve
20-2.8.5 Cryogenic liquid vessel connections
20-2.9 MEDICAL AIR SYSTEM
20-2.9.1 General
21-2.9.2 Medical air source
24-2.9.3 Cylinder supply system
24-2.9.4 Control systems for pendants and columns
31-2.10 MEDICAL SUCTION SYSTEMS
31-2.10.1 General
31-2.10.2 Pipeline suction system (vacuum)
35-2.10.3 Compressed gas venturi ejector-operated suction system
36-2.10.4 Anaesthetic gas scavenging (system)
36-2.11 AIR FOR SURGICAL TOOLS
38-2.12 LOCATIONS OF SOURCES OF GAS SUPPLY
38-2.12.1 Cryogenic liquid systems
38-2.12.2 Gas manifold system
38-2.12.3 Electrical fittings
38-2.12.4 Ambient temperature
38-2.13 ENCLOSURES FOR CYLINDER SUPPLY SYSTEMS
38-2.13.1 Cylinder storage
39-2.13.2 Installation inside a building
39-2.13.3 Installation outdoors
39-2.13.4 Interior and exterior enclosures
40-2.13.5 Signs
40-2.13.6 Delivery access and docks
41-SECTION 3 GENERAL REQUIREMENTS
41-3.1 ALARM SYSTEMS
41-3.1.1 General
42-3.1.2 Installation requirements
43-3.1.3 Indicator panels
44-3.1.4 Operating alarm systems
45-3.2 MATERIALS
45-3.2.1 General
45-3.2.2 Oxygen compatibility of components
45-3.2.3 Cleaning of pipelines and components
46-3.3 REQUIREMENTS FOR PIPELINES
46-3.3.1 General
46-3.3.2 Pipeline design pressure and flows
46-3.3.3 In-line fittings and valves
47-3.3.4 Surgical tool air regulator
47-3.4 PIPELINE SHUT-OFF VALVES
47-3.4.1 General
47-3.4.2 Valve boxes
47-3.4.3 Positioning
48-3.5 TERMINAL UNITS AND CONNECTORS
48-3.5.1 General
48-3.5.2 Form and dimensions
49-3.5.3 Secondary shut-off valve
49-3.5.4 Performance
49-3.5.5 Siting of terminal units
51-3.5.6 Identification
51-3.5.7 Discharge requirements for venturi ejector-operated suction outlets
52-3.5.8 Connections between terminal units and equipment
52-3.6 IDENTIFICATION OF PIPELINES
52-3.6.1 Pipelines
52-3.6.2 Durability of identification
53-3.7 PRESSURE GAUGES
56-SECTION 4 INSTALLATION REQUIREMENTS FOR PIPELINES
56-4.1 GENERAL
56-4.2 ELECTRICAL SEGREGATION
56-4.3 PROTECTION OF PIPELINES
56-4.3.1 General
56-4.3.2 In hazardous areas
56-4.3.3 Covered, buried or concealed pipelines
57-4.3.4 Electrical earth protection
58-4.4 MEDICAL GAS RISERS
58-4.5 RISERS AND DROPPERS TO TERMINAL UNITS
58-4.6 SLEEVES
58-4.7 CONTACT WITH CORROSIVE MATERIALS
58-4.8 ROUTING
58-4.9 CUTTING INTO AN EXISTING SYSTEM
58-4.10 INTERCONNECTION
58-4.11 PIPELINE SUPPORTS
59-4.12 COPPER PIPELINE JOINTS
59-4.12.1 Brazing
59-4.12.2 Threaded and flange joints
59-4.12.3 Brazing alloy
60-4.13 CONNECTION TO EXISTING SYSTEMS
60-4.13.1 General
60-4.13.2 Installation of an additional pipeline
60-4.13.3 Sealing and labelling of isolating valve
60-4.13.4 Marking of affected terminal units
60-4.13.5 Testing for leaks after addition to the system
60-4.14 FIXED SECONDARY EQUIPMENT
60-4.14.1 General
60-4.14.2 Common requirements of all fixed secondary equipment
62-4.14.3 Specific requirements of pendants and booms
63-4.14.4 Specific requirements of columns and pedestals
63-4.14.5 Specific requirements of wall ducting
64-SECTION 5 TESTING AND CERTIFICATION
64-5.1 GENERAL
64-5.2 TESTING, VERIFICATION AND CERTIFICATION
65-5.3 LABELLING OF TERMINAL UNITS
65-5.4 TESTS AND CHECKS ON PIPELINE BEFORE CONCEALMENT
65-5.4.1 General
65-5.4.2 Visual check
65-5.4.3 Initial pressure test
66-5.4.4 Zone isolation valve tests
66-5.4.5 Particulate matter tests
66-5.4.6 Test for cross-connections
67-5.5 TESTS AND COMMISSIONING OF THE COMPLETE PIPELINE SYSTEM
67-5.5.1 General
67-5.5.2 Pressure test
67-5.5.3 Tests for flow rate and pressure
70-5.6 FILLING SYSTEM WITH PROPER GAS AND FINAL COMMISSIONING
70-5.6.1 General
70-5.6.2 Purging with the proper gas
70-5.6.3 Tests on supply plant
71-5.6.4 Tests on alarm systems
71-5.6.5 Test for gas identity
72-5.7 CERTIFICATION OF SYSTEMS
72-5.7.1 Operational test
72-5.7.2 Records
72-5.7.3 Handover instructions
72-5.7.4 Certification and operation manual
72-5.7.5 Certificate of compliance
72-5.8 AS-INSTALLED DRAWINGS
72-5.8.1 General
72-5.8.2 Marking
72-5.8.3 Updating
73-5.8.4 Supplementary master drawing
73-5.8.5 Emergency reference
74-SECTION 6 MAINTENANCE
74-6.1 GENERAL
74-6.2 SAFETY AND WARNING DEVICES
74-6.3 SOURCE OF SUPPLY
74-6.3.1 Checking for proper operation
74-6.3.2 Inspection of manifold system
75-6.3.3 Checking of manifolds
75-6.3.4 Inspection of air compressor and suction pump system
76-6.4 PURITY OF MEDICAL AIR
76-6.5 MAINTENANCE OF TERMINAL UNITS
76-6.6 PRESSURE GAUGES AND PRESSURE SWITCHES
76-6.7 SERVICE MANUALS
76-6.8 LOW PRESSURE FLEXIBLE HOSE ASSEMBLIES
77-APPENDIX A - LIST OF REFERENCED DOCUMENTS
79-APPENDIX B - GUIDE TO PERFORMANCE OF TYPICAL MEDICAL GAS PIPING SYSTEMS
79-B1 SCOPE
79-B2 GENERAL
86-APPENDIX C - OPERATING ALARM SYSTEMS
88-APPENDIX D - RECOMMENDATIONS FOR MATERIALS AND JOINTING TECHNIQUES FOR THE PIPELINE
88-D1 SCOPE
88-D2 METALS
88-D3 JOINTING METHODS
90-APPENDIX E - OUTLINE FOR DETERMINING COMPETENCE OF INSTALLER
91-APPENDIX F - GUIDANCE TO QUALITY OF WORKMANSHIP IN CONSTRUCTION
91-F1 GENERAL
91-F2 PIPE BENDS
92-APPENDIX G - FLUXLESS BRAZING TECHNIQUE
92-G1 SCOPE
92-G2 GENERAL
92-G3 GENERAL BRAZING TECHNIQUE
92-G4 MATERIALS
93-G5 CHOICE OF INERT GAS
93-G6 HAZARD WITH THE USE OF CARBON DIOXIDE
93-G7 PRECAUTIONS
93-G8 USE OF CARBON DIOXIDE
94-G9 PIPEWORK ASSEMBLY
94-G10 INITIAL PIPELINE FLUSH
95-G11 BRAZING OPERATIONS
96-G12 INSPECTION OF JOINTS
100-APPENDIX H - LOGISTIC DIAGRAM, TEST CERTIFICATES, NONCONFORMANCE REPORTING AND CONTRACT COMPLETION CERTIFICATE FOR...
100-H1 SCOPE
100-H2 GENERAL
111-APPENDIX I - TERMINAL UNIT TEST FORM
112-APPENDIX J - RELATIONSHIP BETWEEN TEMPERATURE AND CERTAIN PRESSURE RANGES OF A GIVEN MASS OF PERFECT GAS ASSUMING VOLUME...
113-APPENDIX K - TEST PRESSURE/TEMPERATURE VARIATION FOR SUCTION
114-APPENDIX L - CONVERSION FACTORS FOR UNITS USED IN THE MEASUREMENT OF PRESSURE