ISO 9170-2:1999

Terminal units for medical gas pipeline systems — Part 2: Terminal units for anaesthetic gas scavenging systems

Prises murales pour réseaux de distribution de gaz médicaux — Partie 2: Prises murales pour systèmes d'évacuation des gaz d'anesthésie

General Information

• Status: Withdrawn
• Publication Date: 15-Dec-1999
• Withdrawal Date: 15-Dec-1999
• ICS: 11.040.10 - Anaesthetic, respiratory and reanimation equipment
• Technical Committee: ISO/TC 121/SC 6 - Medical gas supply systems
• Drafting Committee: ISO/TC 121/SC 6 - Medical gas supply systems
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 16-Jun-2008

Relations

• Revised: ISO 9170-2:2008 - Terminal units for medical gas pipeline systems — Part 2: Terminal units for anaesthetic gas scavenging systems
• Effective Date: 15-Apr-2008
• Revises: ISO 9170:1990 - Terminal units for use in medical gas pipeline systems
• Effective Date: 15-Apr-2008

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 9170-2
First edition
1999-12-15
Terminal units for medical gas pipeline
systems —
Part 2:
Terminal units for anaesthetic gas scavenging
systems
Prises murales pour réseaux de distribution de gaz médicaux —
Partie 2: Prises murales pour systèmes d'évacuation des gaz d'anesthésie
A
Reference number
ISO 9170-2:1999(E)

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ISO 9170-2:1999(E)
Contents
Page
1 Scope .1
2 Normative references .1
3 Terms and definitions .1
4 General requirements.6
4.1 Safety .6
4.2 R Alternative construction.6
4.3 Materials .6
4.4 Design requirements .7
4.5 Construction requirements.11
5 Test methods.12
5.1 General.12
5.2 Endurance test.12
5.3 Test for pressure drop.12
5.4 Test for connection force.12
5.5 Test for disconnection force .12
5.6 Tests for mechanical strength.13
5.7 Tests for leakage.13
5.8 Test for type specificity.13
5.9 Test for effective connection probes to sockets.14
5.10 Test for connection of receiving or disposal hoses to hose inserts.14
5.11 Test for durability of markings and colour coding.14
6 Marking, colour coding and packaging.14
©  ISO 1999
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
or mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet [e-mail]
Printed in Switzerland
ii

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© ISO ISO 9170-2:1999(E)
6.1 Marking . 14
6.2 Colour coding . 14
6.3 Packaging. 14
7 Information to be supplied by the manufacturer. 14
Annex A (informative) Rationale. 16
Bibliography. 17

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ISO 9170-2:1999(E) © ISO
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
International Standard ISO 9170-2 was prepared by Technical Committee ISO/TC 121, Anaesthetic and respiratory
equipment, Subcommittee SC 6, Medical gas systems.
This first edition, together with ISO 9170-1, cancels and replaces the first edtion of ISO 9170 (ISO 9170:1994),
which has been technically revised.
ISO 9170 consists of the following parts, under the general title Terminal units for medical gas pipeline systems:
 Part 1: Terminal units for use with compressed medical gases and vacuum
 Part 2: Terminal units for anaesthetic gas scavenging systems
Annex A of this part of ISO 9170 is for information only.
iv

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© ISO ISO 9170-2:1999(E)
Introduction
Anaesthetic gas scavenging system (AGSS) terminal units are the points in an anaesthetic gas
scavenging system where the operator makes connections and disconnections for the disposal of
medical gases and anaesthetic vapours from anaesthetic machines or other items of medical equipment,
and where a wrong connection may create a hazard to the patient. It is important that terminal units and
their components are designed, manufactured, installed and maintained in such a way as to meet the
basic requirements specified in this part of ISO 9170.
This part of ISO 9170 pays particular attention to
 suitability of materials;
 type-specificity;
 dimensions of probes and type-specific connection points;
 cleanliness;
 testing;
 identification;
 information supplied.
This part of ISO 9170 specifies the provision of information for the installation and subsequent testing of
terminal units. Testing of terminal units prior to use is critical to patient safety and it is essential that
terminal units are not used until full testing in accordance with ISO 7396-2 has been completed.

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INTERNATIONAL STANDARD  © ISO ISO 9170-2:1999(E)
Terminal units for medical gas pipeline systems —
Part 2:
Terminal units for anaesthetic gas scavenging systems
1 Scope
This part of ISO 9170 specifies the requirements and dimensions for terminal units intended for use in anaesthetic
gas scavenging disposal systems in accordance with ISO 7396-2 .
It is intended especially to ensure the type specificity of terminal units and to prevent their interchange between
different services.
This part of ISO 9170 specifies two types of terminal units according to whether the power device is upstream or
downstream of the terminal unit.
This part of ISO 9170 also specifies requirements and dimensions for the mating counterpart (probe) of the type-
specific connection point which is part of the terminal unit.
This part of ISO 9170 does not specify the ranges of nominal operating pressure for terminal units, which are
defined in ISO 7396-2.
NOTE Throughout this part of ISO 9170, clauses for which a rationale is provided in annex A are indicated by a boldface
capital R.
2 Normative references
The following normative document contains provisions which, through reference in this text, constitute provisions of
this part of ISO 9170. For dated references, subsequent amendments to, or revisions of, any of these publications
do not apply. However, parties to agreements based on this part of ISO 9170 are encouraged to investigate the
possibility of applying the most recent edition of the normative document indicated below. For undated references,
the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of
currently valid International Standards.
ISO 6506, Metallic materials — Hardness test — Brinell test.
ISO 7396-2, Medical gas pipeline systems — Part 2: Anaesthetic gas scavenging disposal systems.
ISO 8835-3, Inhalational anaesthesia systems — Part 3: Anaesthetic gas scavenging systems —
Transfer and receiving systems.
ISO 14971-1, Medical devices — Risk management — Part 1: Application of risk analysis.
ISO 15001, Anaesthetic and respiratory equipment — Compatibility with oxygen.
3 Terms and definitions
For the purposes of this part of ISO 9170, the following terms and definitions apply.
1

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ISO 9170-2:1999(E) © ISO
A diagram of a typical AGSS terminal unit with an example of terminology is given in Figure 1.
Key
1 Type-specific connection
2 Hose insert (permanent)
3 Point for brazed connection (permanent)
4 Terminal unit base block
5 Type-specific interface
6 Terminal unit check valve (Type 1 only)
7 Type-specific connection point
8 Socket
9 Type-specific probe
Figure 1 — Diagram of a typical AGSS terminal unit
2

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© ISO ISO 9170-2:1999(E)
3.1
AGSS type 1 terminal unit
connection point between the receiving system and disposal system at which the operator makes connections and
disconnections
3.2
AGSS type 1L terminal unit
terminal unit to be used in low-flow disposal systems
3.3
AGSS type 1H terminal unit
terminal unit to be used in high-flow disposal systems
3.4
AGSS type 2 terminal unit
connection point between the power device or the disposal hose and the remainder of the disposal system at which
the operator makes connections and disconnections
3.5
AGSS type-specific
having characteristics which prevent interchangeability and thereby allows assignment to one AGSS type only
3.6
AGSS type-specific connection point
that part of the AGSS socket which is the receptor for an AGSS type-specific probe
3.7
anaesthetic gas scavenging system
AGSS
complete system which is connected to the exhaust port(s) of an anaesthetic workstation or which is integrated into
an anaesthetic workstation for the purpose of conveying scavenged anaesthetic gases to an appropriate place of
discharge
NOTE Functionally, an AGSS comprises three different parts: a transfer system, a receiving system and a disposal
system. These three functionally discrete parts may be either separate or sequentially combined in part or in total. In addition,
one or more parts of an AGSS may be sequentially combined with a breathing system to include the transfer system or transfer
and receiving systems.
See Figure 2.
3.8
disposal hose
that part of the AGSS which transfers scavenged gases from the power device to the probe of the AGSS Type 2
terminal unit
3.9
disposal system
means by which the scavenged gases are conveyed from the receiving system to an appropriate place of discharge
NOTE A place of discharge may be, for example, the exterior of a building or a non-recirculating extract ventilation system.
3.10
high-flow disposal system
disposal system that generates extract flowrates not lower than 75 l/min from transfer and receiving systems
complying with ISO 8835-3
3.11
legible
discernible or identifiable to an operator with 6/6 (20/20) vision (corrected if necessary) from a distance of 1 m at a
light level of 215 lx when viewing the information, markings, etc., perpendicular to and including 15° above, below,
left and right of the direct line of vision of the operator
3

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ISO 9170-2:1999(E) © ISO
4

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© ISO ISO 9170-2:1999(E)
Key
1 Apparatus including breathing system, integral transfer/receiving system and power device
2 Apparatus including breathing system
3 Transfer/receiving system and power device
4 Apparatus including breathing system and integral transfer/receiving system
5 Permanent or proprietary connector
6 Receiving hose
7 Breathing system or anaesthetic ventilator
8 Transfer tube
9 Receiving system
10 Power device
11 Permanent connection
12 Discharge
13 Flexible hose or pendant
14 Disposal hose
15 Limit of breathing system
16 Limit of transfer system
17 Limit of receiving system
18 Limit of disposal system
19 Proprietary connection (functionally specific)
20 30 mm conical connection
21 Type 1 terminal unit probe/socket
22 Type 2 terminal unit probe/socket
NOTE 1 Type 1 terminal unit probe/socket is for negative pressure. Type 2 terminal unit probe/socket is for positive pressure
(see note 2).
NOTE 2 The limit between the receiving system and the disposal system as shown may not coincide with an actual physical
limit such as a wall.
Figure 2 — Schematic diagram of typical anaesthetic gas scavenging system
3.12
low-flow disposal system
disposal system that generates extract flowrates not more than 50 l/min from transfer and receiving systems
complying with ISO 8835-3
3.13
maximum test pressure
maximum pressure to which the terminal unit is designed to be subjected during pipeline pressure-testing
3.14
operating pressure
pressure at which the AGSS terminal unit is designed to operate
NOTE Operating pressure for Type 1 AGSS terminal units is negative; operating pressure for Type 2 AGSS terminal units
is positive.
3.15
power device
that part of the disposal system of an AGSS which provides the gas flow for scavenging
3.16
probe
male component designed for acceptance by and retention in the socket
3.17
quick connector
pair of non-threaded type-specific components which can be easily and rapidly joined together by a single action of
one or both hands without the use of tools.
5

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ISO 9170-2:1999(E) © ISO
3.18
receiving hose
that part of an AGSS which transfers scavenged gases from the receiving system to the disposal system
3.19
receiving system
that part of an AGSS which provides an interface between a transfer system and a disposal system
3.20
single fault condition
condition in which a single means for protection against a safety hazard in equipment is defective or a single
external abnormal condition is present
3.21
socket
that female part of a terminal unit which is either integral or attached to the base block by a type-specific interface
and which contains the type-specific connection point
3.22
terminal unit base block
that part of a terminal unit which is attached to the disposal system
3.23
terminal unit check valve
valve which remains closed until opened by insertion of an appropriate probe and which then permits flow in either
direction
3.24
transfer system
that part of an AGSS which transfers scavenged gases from the exhaust port of a breathing system or other
equipment to a receiving system
3.25
transfer tube
that part of the AGSS transfer system which transfers gases from the breathing system or other equipment to the
receiving system
4 General requirements
4.1 Safety
Terminal units shall, when transported, stored, installed, operated in normal use and maintained according to the
instructions of the manufacturer, cause no safety hazard which could be foreseen using risk analysis procedures in
accordance with ISO 14971-1 and which is related to their intended application, in normal conditions and in single
fault condition.
4.2 R Alternative construction
Terminal units and components, or parts thereof, which use materials or have forms of construction (except for
dimensions and allocation of probes and the type-specific connection points) different from those detailed in
clause 4 of this part of ISO 9170 shall be accepted if it can be demonstrated that an equivalent degree of safety is
obtained. Such
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