SIST ISO 12648:2006

INTERNATIONAL ISO
STANDARD 12648
Second edition
2006-01-15
Graphic technology — Safety
requirements for printing press systems
Technologie graphique — Exigences de sécurité pour systèmes de
presses à imprimer
Reference number
©
ISO 2006
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©  ISO 2006
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ii © ISO 2006 – All rights reserved

Contents Page
Foreword. v
Introduction . vi
1 Scope. 1
2 Normative references. 1
3 Terms and definitions. 4
4 Classification of machines covered by this International Standard . 13
4.1 Machines for producing printing by various processes. 13
4.2 Auxiliary equipment. 13
5 Guarding against significant hazards. 14
5.1 General. 14
5.2 Guards. 14
5.3 In-running (in-going) nips . 17
5.4 Guarding in-running nips. 17
5.5 Interlocks. 21
5.6 Hold-to-run controls . 23
5.7 Automatic format setting operations. 24
5.8 Other safeguarding measures. 25
5.9 Guarding of machine devices and components. 26
6 Requirements for protection against other hazards . 47
6.1 General. 47
6.2 Fire and explosion . 47
6.3 Spillage from washing devices . 51
6.4 Electrical equipment. 51
6.5 Working platforms, access stairs, passageways and raised workplaces . 52
6.6 Stability. 56
6.7 High contact temperatures . 57
6.8 Noise. 57
6.9 Electrostatic toner dust. 57
6.10 Radiation hazards. 58
6.11 Stationary knives. 59
6.12 Rotary tools . 59
6.13 Transport and storage of hazardous tools. 59
6.14 Protruding machine parts . 59
6.15 Handwheels and cranks. 59
6.16 Washing equipment for printing formes, rollers and doctor blades . 59
6.17 Alcohol dosing devices. 60
6.18 Refrigerating devices in ink and dampening units . 61
6.19 Powder spraying devices. 61
6.20 Routine handling of heavy machine parts . 61
6.21 Oxidizers, incinerators or thermal cleaning plants .61
7 Release from a hazardous situation . 61
8 Control zones . 62
9 Controls. 63
9.1 General. 63
9.2 Manual control devices . 63
9.3 Initiating machine motion . 71
9.4 Hold-to-run controls . 72
9.5 Two-hand controls . 72
9.6 Electro-sensitive protective devices. 73
9.7 Pressure-sensitive mats, pressure-sensitive bumpers, trip devices . 73
9.8 Braking devices and clutches. 74
10 Control stations. 75
10.1 Motion-control stations . 75
10.2 Remote access. 76
11 Control systems. 79
11.1 General requirements. 79
11.2 Additional requirements for hand-fed machines where the operator's hands enter the
point of operation. 80
11.3 Control systems for screen printing presses . 81
12 Ergonomics and labelling of indicators and actuators. 81
13 Signals and warning devices. 81
13.1 General. 81
13.2 Audible warning system. 82
13.3 Area-light warning system . 86
14 Warning signs and labels. 86
15 Information for use . 87
15.1 Minimum requirements for machine markings. 87
15.2 Contents of instruction handbook . 88
Annex A (informative) Hazards associated with printing press systems. 93
Annex B (informative) Explosion-protection zones . 96
Annex C (informative) Risk analysis relating to the pitch angle of access stairs . 99
Annex D (informative) Example layout of instruction handbooks. 101
Annex E (normative) Area-light warning system . 103
Bibliography . 105

iv © ISO 2006 – All rights reserved

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 2.
The main task of technical committees is to prepare International Standards. 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.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 12648 was prepared by Technical Committee ISO/TC 130, Graphic technology.
This second edition cancels and replaces the first edition (ISO 12648:2003), the following subclauses of which
have been technically revised.
⎯ 5.1: A requirement has been added to enable needed observation and adjustment with guards closed.
⎯ 5.2.2.1: The use of risk assessment has been added to requirements, as appropriate.
⎯ 5.5.6.3: A requirement to protect against malfunction of the interlock circuit as a result of short circuits has
been added.
⎯ 5.9.2.11: The exception to the requirements for protection of hazard zones on the unwinding unit of
automatic reel-loading systems has been removed.
⎯ 5.9.7 – 5.9.9: Requirements relating to guarding of the gripper area have been added.
⎯ 6.5.2.4: For access platforms, a maximum handle diamet
...