BS 7901:2002

$167.15

Specification for recovery vehicles and vehicle recovery equipment

Published By	Publication Date	Number of Pages
BSI	2002	38

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Categories: 53.020.20 - Cranes, BSI

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Description

This British Standard specifies performance requirements for recovery equipment specifically for moving a casualty vehicle during breakdown or recovery activities. The standard includes winches used for the dragging or partial raising of the casualty vehicle.

Tow ropes and tow chains are not included in this standard.

PDF Catalog

PDF Pages	PDF Title
1	BRITISH STANDARD
2	Committees responsible for this British Standard
3	Contents
5	1 Scope 2 Normative references 3 Terms and definitions 3.1 boom 3.2 casualty vehicle 3.3 coefficient of utilization
6	3.4 competent person 3.5 fully slewing boom 3.6 lift and tow 3.7 mean sheave diameter 3.8 minimum breaking load 3.9 nominal winch drum diameter 3.10 non-slewing boom 3.11 over lift boom 3.12 partially slewing boom 3.13 plated mass 3.14 rated capacity 3.15 recovery 3.16 recovery equipment
7	3.17 recovery vehicle 3.18 snatchblock 3.19 transporter 3.20 type test 3.21 under lift boom 3.22 wheel frames 3.23 winch design rating 3.24 fail safe 3.25 tipping line 3.26 tipping moment 3.27 righting moment
8	Figure 1 Example of tipping line for four wheel chassis fitted with under lift�boom
9	Figure 2 Example of tipping line for six wheel chassis (balance type rear suspension) fitted with under li…
10	Figure 3 Example of tipping line for six wheel chassis with rear stabilizers/stiff legs deployed and under…
11	Figure 4 Example of tipping line for winch fitted to six wheel chassis (balance�type rear suspension) fitt…
12	Figure 5 Example of tipping line for vehicle fitted with rotating boom and�four�stabilizer legs
13	4 Stability 4.1 General 4.2 Static stability (stationary recovery vehicle) 4.3 Dynamic stability (moving recovery vehicles, lift and tow condition) 5 Mechanical components 5.1 General
14	5.2 Rotating shafts, housings and slideways 5.3 Containment of motion 5.4 Partially slewing booms and fully slewing booms 5.5 Lift and tow equipment 6 Safe access 7 Stowage of equipment 8 Guarding
15	9 Controls 9.1 General 9.2 Control stations mounted upon the equipment 9.3 Wander lead remote controls 9.4 Cordless remote controls
16	9.5 Emergency stop control 10 Wire rope sheaves 10.1 General 10.2 Mean sheave diameter 10.3 Sheave rope grooves 11 Snatchblocks
17	12 Load restraints and anchorages 12.1 General 12.2 Load restraints for casualty vehicles transported wholly upon the recovery vehicle 12.3 Load restraints for casualty vehicles transported by lift and tow 12.4 Restraint anchorages 13 Ropes 13.1 General 13.2 Wire rope selection
18	13.3 Wire rope construction 13.4 Wire rope terminations 14 Winches 14.1 Actual winch rating 14.2 Type testing of winches 14.3 Production testing of winches
19	14.4 Wire rope drums 14.5 Hooks 14.6 Winch brakes 14.7 Overload protection devices 14.8 Controls 15 Electrical equipment 15.1 General 15.2 Power source
20	15.3 Power supply 15.4 Earthing 15.5 Fitting 15.6 Slave starting take off sockets and leads 15.7 Lamps
21	15.8 Power take off controls 15.9 Electromagnetic compatibility (EMC) 16 Hydraulic equipment 16.1 Safe hydraulic pressure
22	16.2 Safety of the recovery equipment and casualty vehicle 16.3 Motion drives 16.4 Hydraulic fluid 16.5 Hydraulic fluid reservoir(s) 16.6 Venting 16.7 Hydraulic hoses 16.8 Sink rate of booms 16.9 Protection of hydraulic components
23	17 Pneumatic equipment 17.1 Pneumatic supply 17.2 Safe pneumatic pressure 17.3 Air filtration 17.4 Protection of pneumatic components 17.5 Pressure relief valves and pneumatic exhausts 18 Passenger cabs added to the host chassis 18.1 General 18.2 Access to passenger cab
24	Figure 6 Text and pictorial danger notices warning of cab tilting Figure 7 Dimensions of passenger cab door aperture
25	Figure 8 Aperture for secondary means of escape from passenger cab 18.3 Windows 18.4 Passenger seats 18.5 Passenger restraints 18.6 Heating and ventilation 18.7 Interior lighting
26	Figure 9 Clearances for passenger seats Figure 10 Example of passenger cab step light
27	19 Safety 19.1 Overload protection devices 19.2 Rated capacity charts and markings 19.3 Reflectors on stabilizers 19.4 Level indicators 19.5 Vehicle warning beacon 19.6 Fire extinguishers
28	20 Recovery equipment testing 20.1 Type testing of recovery equipment 20.2 Production testing of recovery equipment 21 Test certificates and documentation 21.1 Recovery equipment test certificate 21.2 Winch test certificate
29	22 Information for use 22.1 General 22.2 Manuals
31	22.3 Marking
32	Annex A (normative) Type test method for winches A.1 Principle A.2 Apparatus A.3 Preparation for test A.4 Procedure
33	A.5 Test report Annex B (normative) Static test method for winches B.1 Principle B.2 Apparatus B.3 Preparation for test B.4 Procedure
34	B.5 Test report Annex C (normative) Type test methods for recovery equipment C.1 Over lift and under lift booms recovery equipment
35	C.2 Slidebed or moving body recovery equipment
36	Annex D (normative) Production test methods for recovery equipment D.1 Over lift and under lift booms recovery equipment D.2 Slidebed or moving body recovery equipment

Additional information

Status	Under Review
Pages	38
Publication Date	2002-07-23
ISBN	0 580 39712 2
Standard Number	BS 7901:2002
Title	Specification for recovery vehicles and vehicle recovery equipment
Corrects	BS 7901:2002
Descriptors	Winches, Lifting equipment, Cranes, Breakdown vehicles, Rescue equipment, Road vehicles, Equipment safety, Vehicles
Publisher	BSI
Committee	MHE/3
ICS Codes	53.020.20 - Cranes

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BS 7901:2002

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