BSI 24/30471992 DC:2024 Edition

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Draft BS 7121-2-4. Safe use of cranes – Part 2-4. Inspection, maintenance and thorough examination of loader cranes. Code of practice

Published By	Publication Date	Number of Pages
BSI	2024	41

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Categories: 53.020.20 - Cranes, BSI

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PDF Catalog

PDF Pages	PDF Title
1	30471992_Form 36
3	BS 7121-2-4_DPC PDF
9	Introduction
10	1 Scope 2 Normative references 3 Terms and definitions 3.1 chassis 3.2 design life 3.3 (fixed load) attachment
11	3.4 in-service condition 3.5 lift axle 3.6 loader crane 3.7 lorry loader 3.8 out-of-service condition 3.9 pre-use checks 3.10 recycling crane 3.11 stability testing 3.12 sub-frame (helper-frame) 3.13 timber handling crane 3.14 trailer 4 General
12	5 Personnel carrying out pre-use checks, in-service inspections, maintenance and thorough examinations 6 Pre-use checks and in-service inspections 6.1 General 6.2 Pre-use checks 6.3 In-service inspection
13	6.4 Reporting of defects 6.5 Records of pre-use checks and in-service inspections 6.5.1 General
14	6.5.2 Pre-use checks 6.5.3 In-service inspections 6.6 Inspection of second-hand loader cranes 6.7 Checks when the loader crane is not in regular use
15	7 Maintenance of loader cranes 7.1 General 7.2 Maintenance intervals 7.2.1 General 7.2.2 In-service maintenance interval
16	7.2.3 Maintenance of cranes that remain in service past their design life 7.3 Information for maintenance 7.4 Inspection during maintenance 7.5 Machine history files
17	7.6 Management review of maintenance records and procedures 7.7 Site issues for maintenance 7.7.1 Maintenance downtime
18	7.7.2 Communication 7.8 Spare parts 7.9 Use of special materials in loader crane construction 8 Thorough examination of loader cranes 8.1 General
21	8.2 Selection of the inspection body and competent person to undertake thorough examination 8.3 Provision of facilities and services
22	8.4 Test site 8.5 Scope of thorough examination before the crane is put into use for the first time 8.6 Scope of thorough examination following installation
23	8.7 Scope of periodic thorough examination 8.7.1 General 8.7.2 Thorough examination of attachments
24	8.7.3 Components to be included
26	8.7.4 Assessment criteria
27	8.7.5 Scope of periodic thorough examination for cranes that remain in service beyond their design life 8.8 Periodic thorough examination interval 8.9 Thorough examination after exceptional circumstances
28	8.10 Preparation for thorough examination 8.11 Rated capacity indicator/rated capacity limiter (RCI/RCL) calibration check 8.11.1 General 8.11.2 Running in 8.11.3 Functional test
29	8.11.4 Performance test 8.11.5 Carrying out a calibration check 8.11.6 Stability test
30	8.11.7 End of testing 9 Overload testing and dynamic testing of loader cranes, and measurement of sink rate 9.1 Overload test 9.1.1 General 9.1.2 Before testing
31	9.1.3 Testing 9.1.3.1 General 9.1.3.2 Test procedure 9.2 Dynamic test
32	9.3 Measurement of sink rate 9.4 End of testing
33	10 Non-destructive testing of loader cranes to supplement thorough examination
34	11 Assessment of wire rope condition and discard criteria Annex A (informative) Example of a pre-use checklist for a loader crane and for a lorry loader
36	Annex B (informative) In service inspection – Example of additional checks to be carried out in addition to pre-use checks, at intervals of 1 week to 1 month Annex C (informative) In-service inspection – Example of checklist for in-service inspections at intervals of 3 months to 6 months
39	Annex D (informative) Example of an in-service inspection checklist for a loader crane attachment Annex E (informative) Stress concentration points in loader cranes