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BS EN 474-12:2022

BS EN 474-12:2022

$189.07

Earth-moving machinery. Safety – Requirements for cable excavators

Published By Publication Date Number of Pages
BSI 2022 50
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This document together with EN 474 1:2022 deals with all significant hazards, hazardous situations and events relevant to cable excavators when used as intended and under the conditions of misuse which are reasonably foreseeable by the manufacturer (see Annex A) associated with the whole lifetime of the machine as described in EN ISO 12100:2010, 5.4. The requirements of this document are complementary to the common requirements formulated in EN 474 1:2022. This document does not repeat the requirements of EN 474 1:2022 but supplements or modifies the requirements for cable excavators. This document does not provide requirements for main electrical circuits and drives of machinery when the primary source of energy is an external electrical supply. This document does not provide performance requirements for safety related functions of control system(s). The following significant and relevant hazards are not covered in this document: — Laser; — Lightning. Drilling and foundation equipment (covered by EN 16228 1:2014+A1:2021 to EN 16228 7:2014+A1:2021) are not dealt with in this document. This document does not provide requirements for main electrical circuits and drives of machinery when the primary source of energy is an external electrical supply. This document does not deal with demolition machinery. This document is not applicable to cable excavators which are manufactured before the date of publication of this document by CEN.

PDF Catalog

PDF Pages PDF Title
2 undefined
10 1 Scope
2 Normative references
11 3 Terms and definitions
13 4 Safety requirements and/or protective/risk reduction measures
4.1 General
4.1.1 Context
4.1.2 Specific relation to EN 474-1
4.2 Access
4.3 Operator’s station
4.3.1 General
4.3.2 Roll-over protective structures (ROPS)
4.3.3 Operator’s protective guard
4.3.4 Moveable operator station
4.4 Seat
14 4.5 Operator’s controls and indicators
4.5.1 General
4.5.2 Operating mode
4.5.3 Controls on stabilizers
4.6 Steering system
4.7 Swing brakes
4.8 Stability
4.8.1 General
15 4.8.2 Calculation of tipping load
4.8.3 Stability in different applications
4.8.3.1 General
16 4.8.3.2 Compacting material application
4.8.3.3 Lifting operation
4.8.3.4 Dragline bucket
17 4.8.3.5 Grab and front shovel
4.9 Excavator operation
4.9.1 Holding brake
4.9.2 Limiting devices
4.9.2.1 Limit switch for the boom hoist system
4.9.2.2 Limit switch for unwinding of the hoisting winch
4.9.3 Free-fall operation
4.9.3.1 General
4.9.3.2 Common requirements for free-fall operation
18 4.9.3.3 Free-fall brake
4.9.3.4 Manual free-fall operation
19 4.9.3.5 Automatic free-fall operation
4.9.4 Boom
4.9.5 Ropes, rope drum, rope pulley
4.9.5.1 General
20 4.9.5.2 Ropes
4.9.5.3 Rope drum
21 4.9.5.4 Rope pulley
4.10 Lifting operation
4.10.1 General
4.10.2 Lifting and lowering operation
4.10.3 Limiting and indicating device for the lifting operation mode
4.11 Cable excavator with electrical power source
4.12 Maintenance
4.12.1 General
4.12.2 Control of winches for maintenance purpose
22 5 Verification of the safety requirements and/or protective/risk reduction measures
24 6 Information for use
6.1 General
6.2 Operator’s manual
26 Annex A (informative)List of significant hazards
31 Annex B (normative)Performance and test requirements for cable excavator swing brakes
B.1 General
B.2 Terms and definitions
B.3 Minimum performance
B.3.1 Swing drive system
B.3.1.1 Test-swing revolution speed
32 B.3.1.2 Deceleration swing angle βB
B.3.2 Swing service brake
33 B.3.3 Swing parking brake
B.4 Conditions for testing the swing service brake
34 Annex C (informative)Illustrations
C.1 Standard applications
C.1.1 Crawler type cable excavator with lifting equipment
35 C.1.2 Crawler type cable excavator with dragline equipment
C.1.3 Crawler type cable excavator with grab equipment
36 C.1.4 Rope shovels and draglines equipped with boom and dipper handle
37 C.2 Special applications
C.2.1 Crawler type cable excavator with hole drilling equipment (casing oscillator)
38 C.2.2 Crawler type cable excavator with piling equipment (hydraulic or diesel hammer)
39 C.2.3 Crawler type excavator with wall cutter equipment (diaphragm wall grab)
C.3 Wheel type cable excavator in transport position for road travelling
40 Annex D (informative)Examples of free-fall operation and activation
44 Annex ZA (informative)Relationship between this European Standard and the essential requirements of Directive 2006/42/EC machinery, and amending Directive 95/16/EC (recast) [2006 L157] aimed to be covered

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BS EN 474-12:2022
$189.07