BS-AU-50-1.8-1989.pdf

BRITISH STANDARD AUTOMOBILE SERIES BS AU 50-1.8: 1989 Tyres and wheels Part 1: Tyres Section 8: Code of practice for the storage of tyres, inner tubes and flaps UDC 629.11.012.3/.5:629.11.012.551.2.004.4:006.76 (083.75) Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:05:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 50-1.8:1989 This British Standard, having been prepared under the direction of the Automobile Standards Policy Committee, was published under the authority of the Board of BSI and comes into effect on 30 November 1989 © BSI 10-1999 The following BSI references relate to the work on this standard: Committee reference AUE/4 Draft for comment 88/71274 DC ISBN 0 580 17583 9 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Automobile Standards Policy Committee (AUE/-) to Technical Committee AUE/4, upon which the following bodies were represented: Agricultural Engineers Association Automobile Association British Industrial Truck Association British Pressure Gauge Manufacturers Association British Rubber Manufacturers Association Bus and Coach Council Department of Transport Freight Transport Association Ministry of Defence Motor Cycle Association of Great Britain Motor Industry Research Association Retread Manufacturers Association Road Haulage Association Ltd Society of Motor Manufacturers and Traders Limited Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:05:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 50-1.8:1989 © BSI 10-1999i Contents Page Committees responsibleInside front cover Forewordii 8.0Introduction1 8.1Scope1 8.2Storage1 8.3Storage conditions1 8.4Inner tubes and flaps1 Figure 1 Vertical storage2 Figure 2 Horizontal storage2 Publications referred toInside back cover Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:05:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 50-1.8:1989 ii © BSI 10-1999 Foreword This Section of BS AU 50-1 has been prepared under the direction of the Automobile Standards Policy Committee and gives recommendations on good practice to be followed for the storage of vehicle tyres, inner tubes and flaps. Storage requirements for general rubber products are given in BS 3574. Tyre, wheel, rim and valve requirements/recommendations are given in the following Parts and Sections of BS AU 50: Tyres and wheels: Part 1: Tyres; Section 0: General; Section 1: Car tyres; Section 2: Commercial vehicle tyres; Section 3: Off-the-road tyres; Section 4: Agricultural vehicle tyres; Section 5: Industrial vehicle tyres; Section 6: Motor cycle tyres; Section 7: Moped tyres; Section 8: Code of practice for the storage of tyres, inner tubes and flaps; Part 2: Wheels and rims; Section 0: General (including terms and definitions, and construction and workmanship); Section 1: Rim profiles and dimensions (including openings for valves); Section 2: Specification for dimensions of wheel naves and hub centres for commercial vehicles; Section 3: Not published; Section 4: Not published; Section 5: Road wheels manufactured wholly or partly of cast light alloy for passenger cars; Section 6: Specification for road wheels manufactured wholly or partly of light alloy for mopeds and motor cycles; Section 7: Code of practice for the selection and care of wheels for commercial vehicles; Section 8: Code of practice for the selection and care of wheels for passenger cars (including caravans and light trailers); Part 3: Valves; Section 1: Valve dimensions; Section 2: Tyre valve threads 5V1, 5V2, 6V1 and 8V1; Section 3: Tyre valve threads 9V1, 10V2, 12V1 and 13V1; Section 4: Tyre valve threads 8V2, 10V1, 11V1, 13V2, 15V1, 16V1, 17V1, 17V2, 17V3, 19V1 and 20V1; Section 5: Dimensions for ISO core chamber No. 1 for tyre inflation valves; Section 6: Dimensions for ISO core chamber No. 2 for tyre inflation valves. 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 comprises a front cover, an inside front cover, pages i and ii, pages 1 and 2, 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: London South Bank University, London South Bank University, Sat Dec 09 02:05:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 50-1.8:1989 © BSI 10-19991 8.0 Introduction Rubber products in general can deteriorate during storage and in extreme circumstances could become unserviceable. Deterioration can be caused by such factors as deformation of the article or by the action of ozone, light, heat or humidity. It is important, therefore, to minimize these effects by taking appropriate precautions during storage in order that tyres, tubes and flaps are maintained in good condition. 8.1 Scope This Section of BS AU 50-1 gives recommendations for the storage of tyres, inner tubes and flaps. 8.2 Storage It is essential that storage should be inside a building to protect tyres, tubes and flaps from the potentially harmful influences listed in clause 8.0. 8.3 Storage conditions 8.3.1 Humidity The store room should be dry and moderately ventilated. Moist conditions should be avoided as tyres can absorb moisture causing degradation of the structure with a risk of subsequent failure in service. 8.3.2 Light Tyre products should not be stored in direct sunlight and should be protected from artificial light having a high ultraviolet content. Lighting with filament type lamps should be used in preference to fluorescent tubes and daylight should be reduced by tinting glass windows with a red or orange coating or screen to absorb ultraviolet light. 8.3.3 Temperature Tyres should not be stored at temperatures higher than + 35 °C or less than 30 °C, the preferred temperature range being + 25 °C to 10 °C. NOTEIt is essential that tyres are not stored in direct contact with hot surfaces, e.g. radiators, hot pipes, etc. 8.3.4 Ozone As ozone is particularly deleterious to rubber, storage rooms should not contain any equipment that is capable of generating ozone, such as mercury vapour lamps and high-voltage electrical equipment giving rise to electric sparks or silent electrical discharges. Combustion gases and organic vapour should be excluded from storage rooms, as they may give rise to ozone via photochemical processes. 8.3.5 Chemicals and lubricants Solvents such as petrol and paraffin, oil, grease, acids and disinfectants are harmful to rubber and should be stored separately. Storage areas should be free from all forms of dirt and grease which, even if not damaging, will mar the appearance of the tyres. 8.3.6 Stock rotation A first-in, first-out policy should be adopted to minimize the storage period and hence any deterioration of products before use. Tyres that have been in storage for more than 6 years from the date of manufacture or retreading should not be put in service without reference to the tyre manufacturer or retreader, as appropriate. 8.3.7 Deformation Tyres should not be stored in a manner which could cause permanent deformation (see 8.3.8 and 8.3.9). 8.3.8 Vertical storage It is recommended that vertical storage of tyres in pallets should be used, particularly for long-term storage (see Figure 1). Tyres stored by this method should be turned through at least 10° at intervals of not more than 6 months. 8.3.9 Horizontal storage Horizontal storage (see Figure 2) should be avoided where possible. When used, however, the stacking order should be rotated at least every 2 months, with the maximum number of tyres in the stack being six. Heavy lug tyres, e.g. agricultural tractor tyres, stored horizontally should be positioned with the tread lugs coinciding, to avoid sidewall deformation. 8.4 Inner tubes and flaps Tubes which are packed in cartons or bags should be left in these to provide some protection against contamination, ozone and light. If tubes are loose they should be stacked on flat, unslotted shelves or pallets so that the valves are not deformed and do not damage neighbouring tubes. Flaps should be stored on flat, unslotted shelves or pallets. Tubes and flaps should not be hung as this can cause stretching. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:05:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 50-1.8:1989 2 © BSI 10-1999 Figure 1 Vertical storage Figure 2 Horizontal storage Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:05:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 50-1.8:1989 © BSI 10-1999 Publications referred to BS 3574, Recommendations for the storage of vulcanized rubber1). 1) Referred to in the foreword only. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:05:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 50-1.8: 1989 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. 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