Medical Gas Pipeline Systems: Design, Installation, Validation and Verification

Design, installation and testing......Page 11
Quality requirements for medical gases and air......Page 12
Moisture......Page 13
Safety......Page 14
Validation and verification......Page 15
General......Page 16
Electrical wiring in plantrooms......Page 17
Bed-head trunking/walling system......Page 18
General......Page 19
Nitrogen for surgical tools......Page 24
Terminal unit flows......Page 25
In-patient accommodation......Page 27
Hyperbaric oxygen chambers......Page 28
Maternity......Page 30
Nitrous oxide/oxygen mixture......Page 31
General......Page 32
Pressure requirements......Page 33
Diversity......Page 34
In-patient accommodation......Page 36
Operating departments......Page 37
Intensive therapy unit, coronary care unit and neonatal unit......Page 38
General......Page 39
Pressure control......Page 41
Manifold indicator unit......Page 42
General......Page 43
Design......Page 44
System sizing......Page 46
VIE......Page 47
Control panel......Page 51
Standby system in use......Page 52
Maintenance......Page 56
Emergency supply facility......Page 57
Alarm signal status unit......Page 58
Control panel......Page 59
Siting requirements......Page 61
Alarm signal status unit......Page 62
Siting......Page 63
Compressor noise......Page 65
Operating and indicating system......Page 66
Molecular sieve control unit......Page 67
Plant status monitoring......Page 68
Alarm signal status unit......Page 69
Plant management......Page 70
Compressor noise......Page 71
Compressor lubrication......Page 73
Receivers......Page 74
Oil......Page 75
Activated carbon filter......Page 76
Automatic drainage traps......Page 77
Pressure indicators......Page 78
Plant control indication......Page 79
Dryer control unit......Page 80
Plant status indicator unit......Page 81
Operating considerations......Page 82
System description......Page 83
Vessel operating pressure......Page 86
Medical oxygen flow control......Page 87
Buffer vessels......Page 88
Emergency supply facility......Page 89
Cylinder manifold supply systems......Page 90
Manifold indicator unit......Page 91
Plant status monitoring......Page 92
Alarm signal status unit......Page 93
Simplex plant......Page 94
Siting......Page 95
Efficiency......Page 97
Vacuum pumps......Page 98
Pressure regulation of vacuum system......Page 99
Plant control unit......Page 100
Plant status monitoring......Page 101
`Plant management......Page 102
General......Page 104
Background......Page 105
Sources of pollution and provision of AGS systems......Page 106
Active and passive systems......Page 107
General design requirements......Page 110
Performance criteria......Page 111
Plant control indication......Page 112
Design considerations......Page 113
Manifold......Page 114
Pipeline distribution......Page 115
Nitric oxide – risk assessment for COSHH compliance......Page 116
Validation and verification......Page 117
Repeater indicator panel location......Page 118
Area warning and alarm systems......Page 121
Continuous muting......Page 123
General......Page 124
Indicators......Page 125
Displays......Page 126
Mute functions......Page 127
Location......Page 128
Accommodation of pipes......Page 130
Pipe jointing fittings......Page 131
Jointing methods......Page 132
Control of cylinders......Page 133
Removal of flux residues and oxides......Page 134
Pipe supports......Page 135
Ceiling pendant fittings – rigid, multi-purpose type......Page 136
Shut-off valves......Page 138
Area valve service units (AVSUs)......Page 139
Pressure gauges......Page 140
Line pressure alarms and safety valves......Page 141
Access......Page 142
Heating and ventilation of plantrooms......Page 143
Noise control......Page 144
General......Page 145
Tests before use......Page 148
General......Page 149
Modifications, extensions or repairs to existing systems......Page 150
Leakage from total compressed medical gas systems......Page 152
Closure of area valve service units......Page 153
Flow and pressure drop at terminal units......Page 154
Performance tests of the pipeline system......Page 155
Functional tests of supply systems......Page 156
Verification of as-fitted drawings......Page 158
Purging and filling with specific gases......Page 159
Particulate matter......Page 160
Nitrogen......Page 162
Gas identification......Page 163
Removal of construction labels......Page 164
Pipework/ductwork installation......Page 165
Performance efficiency......Page 166
Sleeving and supports......Page 167
Leakage......Page 168
Leakage from compressed medical gas systems......Page 169
Zoning of AVSUs......Page 170
Functional tests of terminal units......Page 171
Supply system tests......Page 172
Warning system tests......Page 173
Purging and filling with specific gas......Page 174
Tests for quality......Page 175
System taken into use......Page 176
Appendix A - Testing, commission and filling for use......Page 177
Appendix B - Gas pressure variation with temperature......Page 195
Appendix C - Pressure drop test device......Page 196
Appendix D - Membrane filter test device......Page 198
Appendix E - Equipment for contaminant testing......Page 200
Appendix F - Equipment for gas identification......Page 201
Appendix G - Procedures for measuring the design flow of vacuum plant......Page 203
Appendix H - Procedure for measuring pipeline volume......Page 204
Appendix J - Pressure loss data......Page 206
Appendix K - Presure regulation for 400 kPa (medical gases and medical air) and 700 kPa systems (surgical air)......Page 212
References......Page 215
Other publications in this series......Page 217
About NHS Estates......Page 218