Bsi bs en 14502 2 2005 + a1 2008

EN 14502 2 2005+A1 2008 64 e stf BRITISH STANDARD BS EN 14502 2 2005 +A1 2008 Cranes — Equipment for the lifting of persons — Part 2 Elevating control stations ICS 53 020 30 ��������� � ���� ���������[.]

This British Standard was

published under the authority

of the Standards Policy and

Strategy Committee

on 12 December 2005

© BSI 2008

ISBN 978 0 580 60460 7

This British Standard is the UK implementation of EN 14502-2:2005+A1:2008

It supersedes BS EN 14502-2:2005 which is withdrawn

The start and finish of text introduced or altered by amendment is indicated in the text by tags Tags indicating changes to CEN text carry the number of the CEN amendment For example, text altered by CEN amendment A1 is indicated by !"

The UK participation in its preparation was entrusted by Technical Committee MHE/3, Cranes and derricks, to Subcommittee MHE/3/11, Crane safety and testing

A list of organizations represented on this subcommittee can be obtained on request to its secretary

This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application

Compliance with a British Standard cannot confer immunity from legal obligations.

Amendments/corrigenda issued since publication

Date Comments

Implementation of CEN amendment A1:2008

31 December 2008

EUROPÄISCHE NORM April 2008

ICS 53.020.20 Supersedes EN 14502-2:2005

English Version

Cranes - Equipment for the lifting of persons - Part 2: Elevating

control stations

Appareils de levage à charge suspendue - Equipements

pour le levage de personnes - Partie 2: Cabines élevables

Krane - Einrichtungen zum Heben von Personen - Teil 2:

Höhenverstellbare Steuerstände

This European Standard was approved by CEN on 19 May 2005 and includes Amendment 1 approved by CEN on 4 March 2008

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 CEN 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 CEN Management Centre has the same status as the official versions

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom

2

Foreword 3

Introduction 4

1 Scope 5

2 Normative references 6

3 Terms and definitions 7

4 List of significant hazards 8

5 Safety requirements and/or protective measures 10

6 Verification of the safety requirements and/or protective measures 18

7 Information for use 21

Annex A (normative) General concept for proof of competence 23

Annex B (informative) Selection of a suitable set of crane standards for a given application 24

Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC 25

Annex ZB (informative) !!Relationship between this European standard and the Essential Requirements of EU Directive 2006/42/EC 26

Bibliography 27

Foreword

This document (EN 14502-2:2005+A1:2008) has been prepared by Technical Committee CEN/TC 147

“Cranes - Safety”, the secretariat of which is held by BSI

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 October 2008, and conflicting national standards shall be withdrawn at the latest by October 2008

This document supersedes EN 14502-2:2005

This document includes Amendment 1, approved by CEN on 2008-03-04

The start and finish of text introduced or altered by amendment is indicated in the text by tags !"

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 EU Directive(s)

!For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts of this document."

This European Standard is one part of EN 14502 The other part is:

EN 14502-1: Suspended baskets

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom

4

Introduction

This European Standard has been prepared as a harmonized standard to provide one means for elevating control stations to conform to the relevant essential health and safety requirements of the Machinery Directive 98/37/EC

This European Standard is a type C standard as specified in EN ISO 12100-1

The machinery concerned and the extent to which hazards, hazardous situations and events are covered are indicated in the scope of this European Standard

When provisions of this type C standard are different from those which are stated in type B standard, 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

This European Standard specifies additional requirements for the design of elevating control stations on cranes

General requirements for control stations on cranes are specified in EN 13557

This European Standard also specifies requirements for the driving mechanism, the supporting and suspension system and for safety devices for the elevating control station

This European Standard does not cover hazards which could occur during transport, erection, commissioning, modification, maintenance, de-commissioning or disposal

This European Standard does not apply to control stations which will move with a load or a load lifting attachment

This European Standard does not apply to lifts for crane drivers

This European Standard does not deal with noise hazards because noise due to the movement of the elevating control station is negligible compared to the noise due to the normal operation of the crane

NOTE Noise hazards are dealt within the appropriate European Standard for specific crane types

The significant hazards covered by this European Standard are identified in Clause 4

This European Standard is not applicable to elevating control stations which are manufactured before the date

of publication by CEN

6

2 Normative references

The following referenced documents are indispensable for the application of this European Standard For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies

EN 349:1993, Safety of machinery — Minimum gaps to avoid crushing of parts of the human body

EN 818-7, Short link chain for lifting purposes — Safety — Part 7: Fine tolerance hoist chain, Grade T (Types

T, DAT and DT)

EN 953:1997, Safety of machinery — Guards — General requirements for the design and construction of fixed

and movable guards

EN 982:1996, Safety of machinery — Safety requirements for fluid power systems and their components —

Hydraulics

EN 12077-2:1999, Cranes safety — Requirements for health and safety — Part 2: Limiting and indicating

devices

EN 13411-3, Terminations for steel wire ropes — Safety — Part 3: Ferrules and ferrule-securing

EN 13411-4, Terminations for steel wire ropes — Safety — Part 4: Metal and resin socketing

EN 13411-6, Terminations for steel wire ropes — Safety — Part 6: Asymmetric wedge socket

EN 13557:2003, Cranes — Controls and control stations

EN 13586:2004, Cranes — Access

EN 60204-32:1999, Safety of machinery — Electrical equipment of machines — Part 32: Requirements for

hoisting machines

EN ISO 12100-1:2003, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic

terminology, methodology (ISO 12100-1:2003)

EN ISO 12100-2:2003, Safety of machinery — Basic concepts, general principles for design — Part 2:

Technical principles (ISO 12100-2:2003)

3 Terms and definitions

For the purposes of this European Standard, the terms and definitions given in EN ISO 12100-1:2003,

EN 13557:2003 and the following apply

3.1

elevating control station

control station where the operator can vary his/her elevated position

NOTE An elevating control station can consist of a cabin or a cabin and a platform

3.2

maximum operating speed

maximum speed measured during upward and downward travel of the elevating control station with its rated capacity

device intended to stop the descent of the elevating control station under emergency conditions, e.g breaking

of a suspension wire rope or failure of a hoist

8

4 List of significant hazards

Table 1 identifies all the significant hazards, hazardous situations and events, as far as they are dealt with in this European Standard, identified by risk assessment as significant for this type of machinery and which require action to eliminate or reduce the risk

Table 1 — List of significant hazards and associated requirements

N° Hazards Relevant clause(s) in

this European Standard

13 Failure of power supply 5.4.6

15 Errors of fitting 5.6.4.2, 5.6.5

19 Slip, trip and fall of persons (related to

machinery)

5.2.1, 5.2.2, 5.4.7

Table 1 (continued)

N° Hazards Relevant clause(s) in this

European Standard

21.1 Fall of persons during access (or at/from)

the work position

5.2.2, 5.4.3, 5.4.4, 5.4.7

21.2 Exhaust gases/lack of oxygen at the work

position 5.2.1 21.3 Fire (flammability of the cab, lack of

extinguishing means) 5.2.1, 5.2.2 21.4 Mechanical hazards at work position :

c) fall of objects, penetration by objects 5.2.1, 5.4.5 21.5 Insufficient visibility 5.2.1, 5.5.4

21.7 Inadequate seating 5.2.1

21.9 Vibration at work position 5.2.1

21.10 Insufficient means for

evacuation/emergency exit 5.2.1, 5.2.2, 5.4.6 22.1 Inadequate location of manual controls 5.2.1, 5.5.1, 5.5.4

22.2 Inadequate design of manual controls

and their mode of operation 5.2.1, 5.4.8, 5.5

24 Due to power force and to transmission

of power between machines 5.6.1 25.1 Unauthorized start-up/use 5.2.1, 5.5.3

27.4 Insufficient mechanical strength of parts 5.2.1, 5.2.2, 5.3

27.5 Inadequate design of pulleys, drums 5.6.3.3

27.6 Inadequate selection of chain, ropes,

lifting accessories and their inadequate integration into the machine

5.6.3.2, 5.6.3.3, 5.6.4

27.8 Abnormal condition of

assembly/testing/use/maintenance 5.6.3.2.7, 5.6.4, 5.6.5, 5.6.6.12, 5.8, 7

10

5 Safety requirements and/or protective measures

5.1 General

Elevating control stations shall conform to the safety requirements and/or protective measures of this clause

In addition, elevating control stations shall be designed according to the principles of EN ISO 12100-1 and EN ISO 12100-2 for hazards relevant but not significant, which are not dealt with by this European Standard (e.g sharp edges)

General requirements for a control station are specified in 5.2

Specific requirements for an elevating control station are specified in 5.3 to 5.9

5.2 General requirements

5.2.1 Elevating control stations and the controls for crane functions shall conform to

EN 13557

5.2.2 Access to elevating control stations shall conform to EN 13586

5.2.3 Elevating control stations shall be designed so that either the safety distances or guarding comply with

EN 953 and EN 349

5.2.4 Limiters for the movement of elevating control stations shall be provided in accordance with 5.6 of EN

12077-2:1999

5.2.5 Electrical equipment shall be designed in accordance with EN 60204-32

5.3 Rated capacity and structural calculation

Minimum safety coefficients for proof of competence for elevating control stations and their supporting structure / suspension elements are given in specific clauses of this European Standard or are equivalent to design rules listed in Annex A, which is used as a general guideline for the concept of proof of competence

5.3.1 When used in the design calculation for the elevating control station, the loading by rated capacity (see

5.2.1.8 of EN 13557:2003) shall be increased by a dynamic coefficient (see Annex A)

5.3.2 When used in the design calculation for supporting structure / suspension elements, the loading by

rated capacity and weight of the elevating control station shall be increased by a dynamic coefficient (see Annex A)

5.4 Specific requirements for elevating control stations

5.4.1 The maximum operating speed of elevating control stations shall not exceed 0,5 m/s

5.4.2 Elevating control stations shall be designed so that any inclination from its intended working position

does not exceed 5°

5.4.3 Elevating control stations shall have designated entering / leaving position(s)

5.4.4 Any access opening for entering or leaving an elevating control station shall be provided with a door or

a gate which shall:

a) be designed to:

- either return automatically to the closed and fastened position, or

- be interlocked to prevent operation of the elevating control station until it is closed and fastened;

b) not fold or open outwards;

For very small cabins where it is not possible to install a movable platform outside, the door of the elevating control station can be opened outwards with 2 voluntary actions and a platform shall be provided at dedicated entering and leaving levels

c) be designed to prevent inadvertent opening (only with voluntary action)

5.4.5 If there is a risk of a falling object, means shall be provided to prevent objects falling within and/or out

of the elevating control station

5.4.6 Evacuation out of an elevating control station in the event of power failure or suchlike shall be possible

by alternative means of egress as described by the manufacturer

5.4.7 If there is a risk of trapping, crushing, shearing, cutting or entanglement due to movement between the

elevating control station and parts of the crane, supporting structure and access ways to the elevating control station, means shall be provided in accordance with EN 953

5.4.8 Provisions shall be made to prevent operation of the crane whilst the elevating control station is being

raised or lowered

5.5 Specific requirements for controls for elevating control stations

5.5.1 Controls for the movement of the elevating control station for normal operation shall only be positioned

and capable of being operated from within the elevating control station

5.5.2 The controls for the movement of the elevating control station shall be clearly marked with the effect of

movement due to its operation It shall be clearly distinct from the normal controls (for crane operation)

5.5.3 If the access to the elevation control station is not lockable, a security operated switch (e.g PIN or

key) shall be fitted to the control panel to prevent unauthorized operation If a key is used, removal of the key shall only be permitted in the "cut-off" position

5.5.4 If there is a risk of collision between the elevating control station and obstacles, the operator shall have

direct view of the hoist way of the elevating control station or alternative means (e.g mirrors, restricted area around the hoist way) shall be provided

12

5.6 Driving and suspension system for the elevating control stations

5.6.1 General requirements for hoist system

5.6.1.1 The mechanical transmission between brake, gear box, drum and/or traction system shall be of the positive type and shall not depend upon frictional forces for its operation

5.6.1.2 Drive disks and compression joints shall not be used

5.6.1.3 Where accessible, any moving part of the hoist shall be guarded

5.6.1.4 The hoisting mechanism shall be arranged so, that the transmission between the brake and the drum, or driving pinion (rack and pinion) cannot be interrupted

5.6.1.5 During normal operation it shall not be possible to lower the elevating control station using gravity only

5.6.1.6 Counterweights shall not be used to balance the elevating control station

5.6.1.7 The hoisting system for the elevating control station shall be independent from the hoisting system

to lift the load

5.6.1.8 The elevating control station shall be suspended or supported by steel wire ropes, steel sprocket chains, hydraulic cylinders or racks only

5.6.1.9 Hoists shall be power operated

5.6.1.10 The hoist shall be designed to lift or to lower at least a load equal to 125 % of the sum of the rated

capacity and the weight of the elevating control station

5.6.2 General requirements for brake system

5.6.2.1 The brake shall be capable of stopping the elevating control station, travelling at maximum operating speed and loaded with a load equal to 125 % of the sum of the rated capacity and the weight of the elevating control stations

NOTE Self sustaining gears are not a suitable substitute for a brake

5.6.2.2 Brakes shall apply automatically when the driving power supply or the power supply to the control circuit is interrupted in any way (e.g emergency stop) and stop the elevating control station within a distance

of 0,1 m, without taking into account elasticity of the driving and suspension elements

5.6.2.3 Brakes shall be designed and manufactured in such a manner as to ensure smooth application so that the elevating control station is not subject to any dangerous stresses even under emergency conditions Under all conditions the retardation of the elevating control station shall not exceed 1,0 g

5.6.2.4 Brakes shall be adjustable (manual or automatic compensation)

5.6.2.5 Springs for applying the brakes shall be guided and of the compression type

Every spring of the brake which takes part in the application of the braking action on the drum or disc shall be designed and installed in such a way that if a failure in one of the springs occurs, sufficient braking effort to slow down the elevating control station, when containing rated capacity, would continue to be exercised

5.6.3 Specific requirements for wire rope system

5.6.3.1 General

5.6.3.1.1 The lifting power of the driving unit at the outer layer of the drum shall be taken as a basis for the

calculation

5.6.3.1.2 The hoisting system shall be designed so that the wire ropes are guided through hoists, secondary

devices and pulleys to prevent the wire ropes leaving their intended position (e.g groove of the pulley)

5.6.3.2 Wire rope and end terminations

5.6.3.2.1 The tensile strength of the wires in a rope shall be not less than 1 570 N/mm2 Tensile strength of more than 1 960 N/mm2 shall not be taken into account for the purpose of calculations The ropes shall be of suitable construction for lifting purposes

5.6.3.2.2 Ropes shall be protected against corrosion (e.g galvanized ropes)

5.6.3.2.3 The safety coefficient of the ropes shall be not less than 10, taking into consideration the loading by

rated capacity and weight of the elevating control stations without the application of a dynamic coefficient The limit state for proof of competence shall be the guaranteed minimum breaking force (see Annex A)

5.6.3.2.4 The nominal diameter of suspension ropes shall be not less than 8 mm

5.6.3.2.5 For the calculation of the rope to drum termination a friction coefficient between the rope and the

drum of maximum 0.1 shall be used

5.6.3.2.6 The following devices shall be used as rope end terminations:

a) Asymmetric wedge socket clevis This device shall be in accordance with EN 13411-6;

b) Metal and resin socketing This device shall be in accordance with EN 13411-4;

c) Ferruled secured eye This device shall be in accordance with EN 13411-3;

d) Flemish eye with steel rope clamps and thimble

If not specified in the above mentioned European Standards, the rope end terminations shall withstand a force

of at least 85% of the minimum breaking force of the rope without rupture

Rope eyes and wire rope grips shall not be used as rope end terminations

5.6.3.2.7Visual examination of steel wire ropes over its whole length and rope end terminations shall be

possible without removal of the ropes or major dismantling of the structural components of the system Suitable positioned inspection opening to fulfil this requirement shall be provided where necessary