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1、BRITISH STANDARD BS 1622:1989 Specification for Spreaders for winter maintenance Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 07:52:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1622:1989 This British Standard, having been prepared under the direction of the Road Engineering Standards P
2、olicy Committee, was published under the authority of the Board of BSI and comes into effect on 29 September 1989 BSI 12-1999 First published January 1950 First revision November 1960 Second revision December 1970 Third revision January 1976 Fourth revision September 1989 The following BSI reference
3、s relate to the work on this standard: Committee reference RDB/22 Draft for comment 87/13406 DC ISBN 0 580 17329 1 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Road Engineering Standards Policy Committee (RDB/-) to Technical Committee
4、 RDB/22, upon which the following bodies were represented: British Aggregate Construction Materials Industries British Tar Industry Association Chemical Industries Association County Surveyors Society Department of Transport Engineering Industries Association Federation of Manufacturers of Construct
5、ion Equipment and Cranes Institution of Highways and Transportation Mastic Asphalt Council and Employers Federation Refined Bitumen Association Ltd. Road Emulsion Association Ltd. Road Surface Dressing Association Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheff
6、ieldun sheffieldun, na, Fri Nov 24 07:52:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1622:1989 BSI 12-1999i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2Definitions1 3Classification2 4Coverage2 5Construction2 6Type test and issue of certificate3 7Discharge performa
7、nce tests3 8Additional requirements for spreaders of various classes3 9Warning signs and indicators3 10Marking3 Appendix A Performance test6 Appendix B Static discharge performance test10 Appendix C Road discharge performance test10 Figure 1 Warning sign for rear of spreaders5 Figure 2 Illustration
8、of some related definitions5 Figure 3 Layout of test site7 Table 1 Additional requirements for spreaders of various classes4 Table 2 Test conditions6 Table 3 Typical record form of test for spreader8 Table 4 Typical report form9 Publications referred toInside back cover Licensed Copy: sheffieldun sh
9、effieldun, na, Fri Nov 24 07:52:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1622:1989 ii BSI 12-1999 Foreword This British Standard has been prepared under the authority of the Road Engineering Standards Policy Committee and is a revision of BS 1622:1976, which is withdrawn. Economy in salt usa
10、ge calls for spreaders which can uniformly spread as little as 5 g/m2 over wide carriageways, and modern conditions may require spreaders to operate at comparatively high speeds, between widely separated stockpiles. The detailed requirements for spreading grit or urea have been deleted from this sta
11、ndard but it is recognized that some organizations may wish to use these machines for spreading grit. In these cases the rate of spread for the type of material to be used has to be agreed between the purchaser and the supplier. Purchasers should be aware of the highly corrosive properties of salt a
12、nd the effect it has on steel surfaces and particularly electrical and control equipment. It is important that spreaders are properly maintained and are set to spread consistently the right amount of salt, to spread evenly (including whilst changing gear), to avoid the verges, and to minimize the am
13、ount of salt “wash off” into drains and waterways. This specification includes a spreading test by practical trial. Salt samples are taken along and across the direction of travel and the results are combined in various ways so that aspects of performance are analysed and compared with a calculated
14、level of performance. Also included are two simpler means for checking the rate of discharge so that machines can be regularly tested. This should ensure consistent rates of application. A major factor in salt economy is the ease with which the driver can control spread rates. It is also important t
15、hat the body of the spreader be designed for easy and rapid unloading to lessen any temptation to dump or run out whole or part loads of unused salt. To allow for the different requirements of various local authorities, machines are divided into five classes primarily based on initial cost, speed of
16、 operation and width of coverage. It is hoped that by these means interest and knowledge will be disseminated and manufacturers will be encouraged to improve performance so that even higher levels of performance, resulting in still more economical and efficient operation, may be possible in the futu
17、re. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document compri
18、ses a front cover, an inside front cover, pages i and ii, pages 1 to 10, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffi
19、eldun sheffieldun, na, Fri Nov 24 07:52:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1622:1989 BSI 12-19991 1 Scope This British Standard applies to all types of spreader for distributing salt on roads, except manual spreaders. A classification is laid down and the essential requirements for con
20、struction and performance of each class are specified. A prototype performance test is included for each class, with provision for testing, issue of certificate and marking. It does not specify the construction material of the body nor does it include requirements for corrosion resistance. NOTEThe t
21、itles of the publications referred to in this standard are listed on the inside back cover. 2 Definitions For the purposes of this British Standard, the following definitions apply. 2.1 salt salt complying with the requirements of BS 3247 NOTERock salt, only, is specified for test purposes. 2.2 spre
22、ader a machine or equipment used for distributing salt. There are many different types which may be broadly described in terms of a combination of two principal characteristics a) The method of attachment to the vehicle: mounted on the chassis or body of a vehicle, or as a trailer. b) The method of
23、distribution: speed related, when distribution is automatically linked to the road speed; or non-speed related, when distribution is manually set for a given road speed. 2.3 vehicle the vehicle on which the spreader is mounted or by which it is towed 2.4 permanently mounted spreader a spreader that
24、is permanently mounted on a vehicle 2.5 semi-permanently mounted spreader a spreader that can be mounted and demounted from a vehicle body and fitted with controls located convenient to the driver NOTENormally it is mounted and demounted only at the beginning and end of the winter period. 2.6 demoun
25、table spreader a spreader that can be quickly mounted and demounted from a vehicle body and fitted with controls located convenient to the driver NOTENormally it is mounted and demounted throughout the winter period. 2.7 interchangeable spreader a spreader that can be interchanged in a matter of min
26、utes with an alternative body and fitted with controls located convenient to the driver NOTENormally it is mounted and demounted throughout the winter period. 2.8 trailer/attachment spreader a spreader equipped with connections or other towing mechanisms designed to fit suitable commercial vehicles
27、2.9 axis the centreline of the spreader in the direction of travel 2.10 width of spread the width of road surface at right angles to the axis over which material is to be spread (see Figure 2). For testing and other purposes this comprises: a) the main zone; b) a margin at each side of the main zone
28、. 2.11 spreading the process of distributing material over a road surface: symmetrical when the axis of the vehicle and the main zone coincide, asymmetrical when the left-hand side of the vehicle coincides with or is not more than 300 mm on either side of the left-hand edge of the main zone NOTEIt i
29、s permissible for spreading to be asymmetrical to the left when requested by the purchaser. 2.12 verge a width of 2 m outside each margin (see Figure 2) 2.13 coverage the mass of material distributed over the surface, expressed in grams per square metre 2.14 nominal coverage the average coverage whi
30、ch is intended to be achieved over the width of spread with a particular setting of the appropriate controls and mechanisms Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 07:52:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1622:1989 2 BSI 12-1999 2.15 rated speed the road speed specified
31、by the manufacturer, at which the required coverage and/or width of spread are achieved 2.16 sample rectangle in testing, an area 2 m 1 m on the main zone 3 Classification Spreaders shall be classified as follows, the class of a particular spreader being the highest in which it is capable of meeting
32、 all the requirements of this standard. a) Class A1. Capable of a symmetrical and an asymmetrical width of spread of 11 m at all speeds between 0 km/h and 70 km/h and having a speed related drive. b) Class A2. Capable of a symmetrical and an asymmetrical width of spread of 11 m at all speeds between
33、 8 km/h and 70 km/h and having a speed related drive. c) Class B. Capable of a symmetrical and an asymmetrical width of spread of 11 m at all speeds between 8 km/h and 70 km/h, not speed related. d) Class C. Capable of both a symmetrical and an asymmetrical width of spread of 7 m at a rated speed (s
34、ee 2.15) between 8 km/h and 50 km/h, not speed related. e) Class D. Capable of spreading a symmetrical main zone not less than 2 m wide at a rated speed (see 2.15) between 8 km/h and 50 km/h, not speed related. NOTE 1Class A spreaders are recommended for all precautionary spreading. NOTE 2Class A1 s
35、preads whenever the vehicle is in motion. 4 Coverage Class A1, A2 and B spreaders shall be capable of nominal coverages of salt over the widths of spread specified in clause 3 of between 5 g/m2 and 40 g/m2 in increments not exceeding 5 g/m2 and shall be appropriately marked at the control point. Cla
36、ss C and D spreaders shall be capable of nominal coverages of salt over the widths of spread specified in clause 3 of between 10 g/m2 and 40 g/m2 in increments not exceeding 10 g/m2 and shall be appropriately marked at the control point. Where specified by the purchaser the spreader shall be capable
37、 of being calibrated to compensate for the variable bulk density of the salt. NOTEWhere the spreader is required for grit or urea spreading the rate of spread for the type of material to be used should be agreed between the interested parties. 5 Construction Attention is drawn to the relevant statut
38、ory regulations concerning spreaders. Materials and components shall comply with the relevant British Standards. NOTE 1There are no requirements specified in this standard for the following points which should be considered before a spreader is purchased. a) The materials used for the construction o
39、f the body. b) The corrosion resistance of the body. c) The design and finish of the body to ensure free flow of salt to the discharge point. d) Access for maintenance and replacement of wearing parts. All non-towed gritters shall have a grid with a mesh size of not more than 50 mm centres square to
40、 prevent debris and lumps of salt getting into the body of the gritter. The hopper grid mesh shall be constructed so that the longitudinal elements of the mesh (i.e. those in line with the vehicle axis) are fitted above the transverse element. A fixed inspection ladder and, where required by the pur
41、chaser, a platform shall be provided at the rear of the vehicles (defined in 2.4 to 2.7), to enable the operator to view the inside of the hopper when cleaning down. Bearings, chains and other power-transmission components and assemblies, particularly electrically operated, shall be enclosed or othe
42、rwise protected against the entry of dirt, grit, salt and water. The machinery shall be guarded in accordance with BS 5304. All movable controls and adjustments shall be indexed or clearly marked so that the purchaser can calibrate them for widths of spread and coverage. Controls for cutting off spr
43、eading shall be provided and these and other controls required to be operated while the vehicle is in motion shall be located within the cab for operation by the driver. NOTE 2It is desirable that an indication that the machine is spreading be provided in the cab for the driver. If the spreading mec
44、hanism of a driven spreader would be subjected to severe wear and tear during road movement faster than the maximum operational speed, simple means shall be provided to enable the spreading mechanism to be disconnected. The rate of spread shall not be affected during the process of normal vehicle ge
45、ar changing. NOTE 3The spread of the salt in relation to the wheels of the vehicle should be agreed between the interested parties. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 07:52:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1622:1989 BSI 12-19993 6 Type test and issue of certificat
46、e A spreader of each new type or design shall be tested in accordance with Appendix A and shall achieve a performance as follows. a) Accuracy of nominal coverage. The total mass of salt collected on the main zone, margins and verges on the 1/10 full and full runs at the same nominal speed shall not
47、differ from the calculated total (see A.5) by more than 10 %. For class A spreaders the total mass of salt collected on the main zone, margins and verges on the 1/10 full and full runs at 20 km/h shall not differ from the total mass collected on the runs at 40 km/h by more than 10 %. b) Overall vari
48、ation in coverage.The total mass of salt collected on the 1/10 full run shall not differ from the total mass collected on the full run (at the same speed) by more than 10 %. c) Accuracy of longitudinal coverage. The total mass of salt collected on any one transverse strip after one run shall not dif
49、fer from the mean mass collected on the thre strips after that run by more than 20 % for classes A and B, 30 % for class C or 40 % for class D spreaders. d) Accuracy of coverage of main zone. The total mass ot salt collected on any one sample rectangle on the main zone after one run shall not be less than 50 % nor more than 200 % of the mean mass collected on all the sets of sample rectangles on the main zone after the 1/10 full and full runs at the same speed. e) Accuracy of coverage on margins. The mean mass of salt collected on either margin after on