EN 12110:2002
(Main)Tunnelling machines - Air locks - Safety requirements
Tunnelling machines - Air locks - Safety requirements
This European Standard applies to the design, construction, equipping, marking and testing of air locks and pressure bulkheads, which are to be used in tunnelling work. This Standard deals with all significant hazards listed in clause 4 and specific to the machinery identified in clause 1.1, when used under the conditions foreseen by the manufacturer.
Tunnelbaumaschinen - Druckluftschleusen - Sicherheitstechnische Anforderungen
1.1 Maschinenbeschreibung
Diese Europäische Norm gilt für Form, Aufbau, Ausstattung, Kennzeichnung und Prüfung von Druckluftschleusen und Druckwänden, die bei Tunnelbauarbeiten verwendet werden.
Die zur Versorgung mit Luft eingesetzte Sauerstoffanlage, die für die sichere Durchführung einer Druckentlastung erforderlich ist, fällt ebenfalls in den Anwendungsbereich dieser Norm.
1.2 Diese Norm behandelt alle signifikanten Gefährdungen, Gefährdungssituationen und Gefährdungsereignisse, die auf Druckluftschleusen und Druckwände zutreffen, wenn sie bestimmungsgemäß und entsprechend den vorhersehbaren Bedingungen des Herstellers verwendet werden (siehe Abschnitt 4). Diese Norm beschreibt die entsprechenden Maßnahmen zur Beseitigung oder Verminderung der Risiken, die von den signifikanten Gefährdungen ausgehen.
1.3 Dieses Dokument gilt nicht für Maschinen, die hergestellt wurden, bevor CEN dieses Dokument veröffentlichte.
Tunneliers - Sas de transfert - Prescriptions de sécurité
1.1 Description de la (des) machine(s)
La présente Norme européenne porte sur la conception, la fabrication, la fourniture, le marquage et les essais des sas de transfert et de parois de cloison de pression destinés aux travaux de soutènement de tunnels.
Le respirateur à oxygène utilisé pour procurer la quantité d'air nécessaire pour effectuer la décompression en toute sécurité est également couvert par cette norme.
1.2 La présente norme traite tous les phénomènes dangereux significatifs relatifs aux sas de transfert et les parois de cloison de pression, lorsqu'ils sont utilisés normalement et dans les conditions prévues par le constructeur (voir article 4). La présente norme spécifie les mesures techniques appropriées pour éliminer ou réduire les risques dus aux phénomènes dangereux significatifs.
1.3 La présente Norme européenne s'applique en particulier à des machines fabriquées après la date d'approbation de la norme par le CEN.
Stroji za gradnjo predorov – Zračne zapore – Varnostne zahteve
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 12110:2003
01-november-2003
6WURML]DJUDGQMRSUHGRURY±=UDþQH]DSRUH±9DUQRVWQH]DKWHYH
Tunnelling machines - Air locks - Safety requirements
Tunnelbaumaschinen - Druckluftschleusen - Sicherheitstechnische Anforderungen
Tunneliers - Sas de transfert - Prescriptions de sécurité
Ta slovenski standard je istoveten z: EN 12110:2002
ICS:
91.220 Gradbena oprema Construction equipment
93.060 Gradnja predorov Tunnel construction
SIST EN 12110:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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EUROPEAN STANDARD
EN 12110
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2002
ICS 91.220; 93.060
English version
Tunnelling machines - Air locks - Safety requirements
Tunneliers - Sas de transfert - Prescriptions de sécurité Tunnelbaumaschinen - Druckluftschleusen -
Sicherheitstechnische Anforderungen
This European Standard was approved by CEN on 2 September 2002.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12110:2002 E
worldwide for CEN national Members.
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EN 12110:2002 (E)
Contents
page
Foreword.4
Introduction .5
1 Scope .5
1.1 Description of the machine(s) .5
2 Normative references .5
3 Terms and definitions.6
4 List of significant hazards.7
4.1 Mechanical hazards .7
4.2 Electrical hazards.7
4.3 Thermal hazards.7
4.4 Noise hazards.7
4.5 Hazards generated by materials and substances processed, used or exhausted by machinery,
for example:.7
4.6 Hazards generated by neglecting ergonomic principles in machine design (mismatch of
machinery with human characteristics and abilities) caused e.g. by: .7
4.7 Hazards caused by failure of energy supply, breaking down of machinery parts and other
functional disorders, e.g.: .8
4.8 Hazards caused by (temporarily) missing and/or incorrectly positioned safety related
measures/means, e.g.: .8
5 Safety requirements and/or protective measures .8
5.1 General requirements.8
5.1.1 Calculation.8
5.1.2 Pressure relief valve .9
5.1.3 Electrical equipment.9
5.1.4 Control panel.9
5.1.5 Communication.9
5.1.6 Doors, closing and sealing .9
5.1.7 Fire protection.9
5.1.8 Handling of heavy items.9
5.2 Personnel locks.9
5.2.1 Number of chambers .9
5.2.2 Dimensions.10
5.2.3 Seats.10
5.2.4 Door openings, dimensions.10
5.2.5 Doors, closure.10
5.2.6 Minimum equipment for personnel locks.10
5.2.7 Other requirements.11
5.2.8 Ventilation.12
5.2.9 Protection against breaks in flexible lines .12
5.2.10 Oxygen breathing (including all gas mixtures with more than 25 % oxygen).12
5.3 Material locks .13
5.4 Combined locks .14
5.5 Pressure bulkheads.14
5.5.1 Sealing .14
5.5.2 Service ports .14
6 Verification of safety requirements and/or protective measures .14
7 Information for use .15
7.1 General.15
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EN 12110:2002 (E)
7.2 Signals and warning devices.15
7.3 Instruction handbook .15
7.4 Marking .16
Annex ZA (informative) Relationship of this document with EC Directives.18
Bibliography .19
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EN 12110:2002 (E)
Foreword
This document (EN 12110:2002) has been prepared by Technical Committee CEN/TC 151 "Construction equipment
and building material machines - Safety", the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical text or
by endorsement, at the latest by April 2003, and conflicting national standards shall be withdrawn at the latest by
April 2003.
This document has been prepared under a mandate given to CEN by the European Commission and the European
Free Trade Association and supports essential requirements of EC Directive(s).
For relationship with EC Directives, see informative annex ZA, which is an integral part of this document.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,
Sweden, Switzerland and the United Kingdom.
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EN 12110:2002 (E)
Introduction
This document is a type C standard as stated in EN 1070:1998.
The machinery concerned and the extent to which hazards, hazardous situations and events are covered are indi-
cated in the scope of this document.
When provisions of this type C standard are different from those which are stated in type A or B standards, the
provisions of this type C standard take precedence over the provisions of the other standards, for machines that
have been designed and built according to the provisions of this type C standard.
1 Scope
1.1 Description of the machine(s)
This European Standard applies for the design, construction, equipping, marking and testing of air locks and
pressure bulkheads, which are to be used in tunnelling work.
The oxygen breathing installation used to provide the breathing supply necessary to conduct a safe decompression
is also covered by this standard.
1.2 This standard deals with all significant hazards, hazardous situations and events relevant to air locks and
pressure bulkheads, when they are used as intended and under the conditions foreseen by the manufacturer (see
clause 4). This standard specifies the appropriate technical measures to eliminate or reduce risks arising from the
significant hazards.
1.3 This document is not applicable to machinery which is manufactured before the date of publication of this
document by CEN.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
EN 140:1998, Respiratory protective devices - Half masks and quarter masks - Requirements, testing, marking.
EN 292-2:1991, Safety of machinery - Basic concepts, general principles for design – Part 2: Technical
principles((identical with ISO/DIS 12100 –2:2000) Revision of EN 292-2:1991 and EN 292-2:1991/A1:1995).
EN 1070:1998, Safety of machinery – Terminology.
EN 60204-1:1997, Safety of machinery - Electrical equipment of machines – Part 1: General requirements (IEC
60204-1:1997).
EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989).
EN 61310-1:1995, Safety of machinery - Indication, marking and actuation – Part 1: Requirements for visual, audi-
tory and tactile signals (IEC 61310-1:1995).
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EN 12110:2002 (E)
EN ISO 11202:1995, Acoustics – Noise emitted by machinery and equipment – Measurement of emission sound
pressure levels at a work station and at other specific positions – Survey method in situ (ISO 11202:1995).
3 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN 1070:1998 together with the
following apply.
3.1
compressed air
air with a pressure of more than 0,1 bar, above atmospheric. All pressures to be measured above atmospheric
pressure
3.2
pressure chamber
pressure vessel which is intended for accommodating persons above atmospheric pressure
3.3
working chamber
space in which work in compressed air is carried out
3.4
air lock
pressure vessel with one or more chambers with access doors, which can be sealed and pressurised with com-
pressed air
3.5
material lock
air lock through which only material or equipment goes into or out of the working chamber
3.6
personnel lock
air lock through which only persons go into or out of the working chamber
3.7
combined lock
air lock through which persons, material or equipment go into or out of the working chamber
3.8
pressure bulkhead
equipment which separates spaces with different pressure levels
3.9
maximum working pressure
highest pressure to which a pressure chamber may be subjected in normal use
3.10
design pressure
pressure used for calculation not including the safety-factor
3.11
oxygen breathing installation
plant and ancillary equipment used to provide oxygen supply necessary for a safe decompression procedure
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EN 12110:2002 (E)
4 List of significant hazards
This clause contains all the significant hazards, hazardous situations and events, as far as they are dealt with in
this standard, identified by risk assessment as significant for this type of machinery and which require action to
eliminate or reduce the risk.
4.1 Mechanical hazards
4.1.1 Impact hazard, see: 5.2.4, 5.2.5
4.1.2 Ejection of parts (of machinery and processed material/workpieces) , see: 5.1.1
4.1.3 Uncontrolled change of pressure, see: 5.1.1, 5.1.2, 5.2.6,
5.2.9
4.1.4 Hazards resulting from the suction by differential pressure between the
pressurised environment and atmospheric pressure, see: 5.2.7
4.2 Electrical hazards
4.2.1 Electrical contact, direct or indirect, see: 5.1.3
4.2.2 External influences on electrical equipment, see: 5.1.3
4.3 Thermal hazards
4.3.1 Burns and scalds, by a possible contact of persons, by flames or
explosions and also by the radiation of heat sources, see: 5.1.3, 5.1.7, 5.2.7,
5.2.10.5, 7.2
4.3.2 Health-damaging effects by hot or cold work environment, see: 5.2.6.1, 5.2.7, 5.4
4.4 Noise hazards
4.4.1 Hearing losses (deafness), other physiological disorders
(e.g. loss of balance, loss of awareness, etc.), see: 5.2.7, 5.4
4.4.2 Interference with speech communication, acoustic signals, etc., see: 5.2.7, 5.4, 7.2
4.5 Hazards generated by materials and substances processed, used or exhausted by machinery,
for example:
4.5.1 Hazards resulting from contact with or inhalation of harmful fluids, gases,
mists, fumes and dusts, see: 5.1.7, 5.2.6.2, 5.2.8,
5.2.10.1
4.5.2 Fire or explosion hazards especially under increased air pressure, see: 5.1.3, 5.1.4, 5.1.7, 5.2.7,
5.2.10.1, 5.2.10.2, 5.2.10.3
4.5.3 Use of oxygen, see clause: 5.2.10
4.6 Hazards generated by neglecting ergonomic principles in machine design (mismatch of
machinery with human characteristics and abilities) caused e.g. by:
4.6.1 Unhealthy postures or excessive efforts, see: 5.1.8, 5.2.2, 5.2.3
4.6.2 Inadequate consideration of human anatomy, see: 5.2.2, 5.2.3, 5.2.4
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EN 12110:2002 (E)
4.6.3 Inadequate local lighting, see: 5.1.4, 5.2.7
4.7 Hazards caused by failure of energy supply, breaking down of machinery parts and other
functional disorders, e.g.:
4.7.1 Failure of energy supply (of energy and/or control circuits), see: 5.1.4, 5.2.7, 7.2
4.7.2 Errors of fitting, see: 5.2.5, 5.5.1, 7.2
4.7.3 Uncontrolled decompression of working chamber or lock, see: 5.1.6, 5.2.5, 5.2.6.1,
5.2.9, 5.2.10.6
4.7.4 Loss of communication, see: 5.1.5
4.8 Hazards caused by (temporarily) missing and/or incorrectly positioned safety related
measures/means, e.g.:
4.8.1 All kinds of safety related (protection) devices, see: 5.1.3 5.1.5, 5.2.6.1,
5.2.6.2, 5.3, 5.5.2
4.8.2 Safety signs, see: 5.3, 7.1, 7.2
4.8.3 All kinds of information or warning devices, see: 5.2.6.1, 7
4.8.4 Means of access for emergency personnel into the confined pressurised
part of the machine, see: 5.2.1, 5.2.2, 5.2.4, 5.2.5
4.8.5 Emergency devices, in particular means of evacuation of a casualty from
the confined pressurised part of the machine, see: 5.2.1, 5.2.2
4.8.6 Essential equipment and accessories for safe adjusting and/or maintaining
see: 5.2.6.1, 5.3, 5.4
4.8.7 Equipment for evacuating gases, etc, see: 5.2.6.2, 5.2.8, 5.2.10.3,
5.2.10.6, 5.4
5 Safety requirements and/or protective measures
Machinery shall comply with the safety requirements and/or protective measures of this clause.
Machinery shall comply with the safety requirements and/or protective measures of this clause. In addition, the
machine shall be designed according to the principles of EN 292 for hazards relevant but not significant, which are
not dealt with by this document (e.g. sharp edges).
5.1 General requirements
5.1.1 Calculation
The design pressure shall be 1,1 times the maximum working pressure. Where bulkheads cannot be tested the
design pressure shall be 1,5 times the maximum working pressure.
The calculation shall be carried out according to the finite elements method. The calculations shall be part of the
technical documentation.
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EN 12110:2002 (E)
5.1.2 Pressure relief valve
Each compartment shall be equipped with a pressure relief valve set at 1,1 times the maximum working pressure
and capable of passing the whole air supply to the air lock at that pressure. Once activated the valve shall be able
to fully close when pressure is lowered back to the working pressure.
5.1.3 Electrical equipment
Electrical equipment in air locks shall comply with EN 60204-1:1997. For the application of EN 60204-1 the manu-
facturer shall carry out an adequate risk assessment for the requirements thereof where choice is necessary.
NOTE This specific risk assessment is part of the general risk assessment relating to the hazards not covered by this type
C standard.
It shall be suitable for humid and wet spaces and be protected from dust deposits and spraying water to a minimum
class of IP 55 of EN 60529:1991, clause 4. Electrical equipment shall be designed to minimise the risk of fire and
toxic fumes and shall withstand pressure changes to the maximum working pressure of the air lock.
5.1.4 Control panel
Control equipment and indicating instruments
...
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