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1、BRITISH STANDARD CONFIRMED MARCH 1991 BS 1979:1985 Specification for Hospital ward bedsteads for psychiatric hospitals UDC 615:478.2:684.422.14:616.89 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 03:27:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1979:1985 This British Standard, having
2、 been prepared under the direction of the Health Care Standards Committee, was published under the authority of the Board of BSI and comes into effect on 29 November 1985 BSI 12-1999 First published June 1953 First revision November 1985 The following BSI references relate to the work on this standa
3、rd: Committee reference HCC/31 Draft for comment 83/53660 DC ISBN 0 580 13899 2 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Health Care Standards Committee (HCC/-) to Technical Committee HCC/31 upon which the following bodies were re
4、presented: Association of British Paediatric Nurses Association of National Health Service Supplies Officers British Paediatrics Association British Surgical Trades Association Incorporated Department of Health and Social Security Royal College of Midwives Royal College of Nursing and National Counc
5、il for Nurses of the UK Stainless Steel Fabricators Association of Great Britain Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 03:27:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1979:1985 BSI 12-1999i Contents Page Commit
6、tees responsibleInside front cover Forewordii 1Scope1 2Materials1 3Surface finish1 4Dimensions1 5Construction3 6Structural strength and stability3 7Marking4 Appendix A Guidance on bedstead design and characteristics of surface finish5 Appendix B Information to be supplied by the purchaser to the man
7、ufacturer5 Appendix C Methods of test for structural strength and stability5 Figure 1 Designation of dimensions of bedstead1 Table 1 Requirements for durability of surface finish2 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 03:27:13 GMT+00:00 2006
8、, Uncontrolled Copy, (c) BSI BS 1979:1985 ii BSI 12-1999 Foreword This revision of this British Standard has been prepared under the direction of the Health Care Standards Committee. It supersedes BS 1979:1953 which was published under the title “Hospital ward bedsteads for mental hospitals”, and is
9、 now withdrawn. The major change in this revision is the introduction of requirements and corresponding test methods for the structural strength and stability of the bedstead and for the durability and toxic constituents of the surface finish. The specification of such performance requirements has s
10、uperseded the detailed requirements for materials, design and construction that were to be found in the 1953 edition. It has not proved possible to specify certain characteristics of the surface finish, but guidance on these aspects is given in Appendix A. The Committee responsible for the preparati
11、on of this revision has adopted this approach in order to allow designers and manufacturers a degree of flexibility in the production of bedsteads of modern and aesthetically pleasing design. It is believed that the use of bedsteads of a style similar to domestic bedsteads is of value in diminishing
12、 the “institutional” atmosphere that is considered undesirable to the well-being of certain psychiatric, geriatric and similar patients. Guidance on design is given in Appendix A. Many of the features and provisions of the “Kings Fund” hospital bedstead specified in BS 4886-1 and BS 4886-2 have not
13、been included because they are not considered necessary for the use for which the bedsteads specified in this revision of BS 1979 are intended. However, the requirements for the strength of the bedstead structure and the major dimensions of the bedstead are similar to those specified in BS 4886. A n
14、umber of variations in design of bedstead are provided for and Appendix B gives information that the purchaser should supply to the manufacturer when ordering a bedstead. This British Standard calls for the use of procedures that may be injurious to health if adequate precautions are not taken. It r
15、efers only to technical suitability and does not absolve the user from legal obligations relating to health and safety at any stage. In particular, attention is drawn to the procedures for testing ignitability. This procedure should be carried out by trained personnel under adequate supervision, and
16、 precautions should be taken to safeguard the health of personnel against the risk of fire or inhalation of smoke and toxic products of combustion. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct
17、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 to 8, an inside back cover and a back cover. This standard has been updated (see copyright
18、 date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 03:27:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1979:1985 BSI 12-19991 1 Scope This British Standard specifies requi
19、rements for materials, finishes, dimensions, construction and strength for bedsteads of fixed height suitable for general purposes in psychiatric and geriatric hospitals and similar institutions. Requirements for height adjustment and ancillary fitments, such as cot sides and buffering devices are n
20、ot included. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 Materials The framework of the bedstead shall be made of steel tubing complying with the requirements for grade ERW 5 of BS 6323-5. 3 Surface finish 3.1 Durability The surface finish o
21、f the bedstead shall comply with the requirements specified in Table 1 when tested in accordance with the methods of test listed therein. The surface finish of the test panels used in these tests shall be applied and dried in the same manner and under the same conditions as the finish applied to the
22、 bedstead. 3.2 Toxicity The surface finish shall comply with the requirements for the maximum levels of toxic metals specified in 5.2 of BS 4751:1984. 4 Dimensions The overall length of the bedstead, shown as dimension A in Figure 1, shall be not greater than 2 234 mm, including buffers if present.
23、The length of the clear space, shown as dimension B in Figure 1, above the mattress support panel, between the headend and footend structures shall be within the range 2 010 mm to 2 060 mm. The width of the mattress support panel shall be not less than 865 mm and the overall width of the bedstead sh
24、all be not more than 1 075 mm, including buffers if present. NOTEThe preferred height of the mattress support panel above the floor level is 450 5 mm (see Appendix B). NOTEThis figure illustrates the designation of dimensions; it does not purport to specify design and does not otherwise form part of
25、 the specification. Figure 1 Designation of dimensions of bedstead Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 03:27:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1979:1985 2 BSI 12-1999 Table 1 Requirements for durability of surface finish PropertyTest methodTest panel Number of sampl
26、es Requirement Resistance to bendingBS 3900-E1; type 2 apparatus; 12 mm mandrel Mild steel, 1.2 mm thick3Shall show no cracks or no loss of adhesion visible with unaided vision Resistance to scratchingBS 3900-E2; 3 000 g loadMild steel, 1.2 mm thick3Shall show no bare metal Resistance to impact (fal
27、ling weight)BS 3900-E3; indentation of 3 mm with coating facing upwards Mild steel, 1.2 mm thick3Shall show no loss of adhesion Resistance to cuppingBS 3900-E4; indentation of 3 mm on coated and uncoated sides Mild steel, 1.2 mm thick3Shall show no cracks or no loss of adhesion visible with unaided
28、vision Resistance to cross-cuttingBS 3900-E6; single cutting tool; manually operated; six cuts in each direction at 2 mm spacing Mild steel, 1.2 mm thick3Shall not exceed classification 2 Resistance to humidityBS 3900-F9; duration of test 96 h; no interim examination, no recovery period Mild steel,
29、1.2 mm thick, coated on one face only 3Shall show no colour change or formation of rust Resistance to liquidsBS 3900-G5; test method 3; exposure time 60 min; no recovery period; no removal of coating after exposure; test area covered Test liquids: a) ethanol; b) acetone; c) glacial acetic acid, 50 %
30、 V/V in water Mild steel, 1.2 mm thick, coated on one face only 3Shall show no blistering, pitting, softening or bleaching Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 03:27:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1979:1985 BSI 12-19993 5 Construction 5.1 Mattress support panel Th
31、e mattress support panel shall be either a plastics-coated corrugated steel sheet or shall be of welded steel mesh construction with wire of diameter between 3 mm and 5 mm and with the major dimension of the apertures of the mesh in the range 40 mm to 75 mm. NOTESee Appendix B for information to be
32、supplied by the purchaser. 5.2 Legs The legs shall be either capable of folding flat or shall be removable. When correctly fitted to the bedstead, it shall not be possible to fold or remove the legs without the use of tools. 5.3 Headend structure A headend structure, incorporating a filled panel, sh
33、all be provided. It shall be capable of being permanently fixed to the mattress platform and it shall not be possible to remove it without the use of tools. When tested in accordance with the large scale test given in BS 476-7, the filled panel shall comply with the class 1 requirements for ignitabi
34、lity. There shall not be any gap of more than 5 mm in the headend structure or between the headend structure and the mattress platform or mattress support panel. 5.4 Footend structure If a footend structure is provided, it shall incorporate a filled panel and it shall be capable of being permanently
35、 fixed to the mattress platform. It shall not be possible to remove the footend structure without the use of tools. When tested in accordance with the large scale test given in BS 476-7, the filled panel shall comply with the class 1 requirements for ignitability. There shall not be any gap of more
36、than 5 mm in the footend structure or between the footend structure and the mattress platform or mattress support panel. NOTESee Appendix B for information to be supplied by the purchaser. 5.5 Provision for mobility 5.5.1 General. The bedstead shall be fitted with either two or four castors as speci
37、fied in 5.5.2 or 5.5.3. Castors shall comply with the requirements of BS 2099-1 and shall be of not less than 100 mm nominal diameter. NOTESee Appendix B for information to be supplied by the purchaser regarding the number of castors to be fitted, the number to be braked and the provision of bufferi
38、ng devices. 5.5.2 Bedsteads with two castors. There shall be two castors at the headend of the bedstead and two plastics or rubber stump feet at the footend. The feet shall be non-marking as defined in BS 2099-1. The wheel and swivel of at least one of the castors shall be braked. 5.5.3 Bedsteads wi
39、th four castors. There shall be two castors at the headend and two castors at the footend of the bedstead. The wheel and swivel of at least two of the castors shall be braked. 5.6 Fasteners All fasteners used in the construction of the bedstead shall be either self-locking or shall be fitted with a
40、locking device. 6 Structural strength and stability 6.1 Structural strength of bedstead under equally distributed load When tested in accordance with the method described in C.1 to C.4.2 and C.5 the following criteria shall be satisfied: a) measurements taken at any of the specified positions during
41、 the application of the force shall not differ by more than 38 mm from the corresponding measurements taken before the application of the force; b) measurements taken at any of the specified positions after the removal of the force shall not differ by more than 6.5 mm from the corresponding measurem
42、ents taken before the application of the force; c) there shall not be any fracture of, or cracks in, the structure of the bedstead. 6.2 Structural strength and stability under unequally distributed load When tested in accordance with the method described in C.1 to C.4.1, C.4.3 and C.5 the following
43、criteria shall be satisfied: a) measurements taken before the application of the force shall not differ by more than 38 mm from those taken under loaded conditions when the force has been applied for 5 min; b) the mattress platform shall return to within 6.5 mm of its original position within 5 min
44、of the removal of the force; c) at no time shall two legs lift simultaneously from the floor; d) there shall not be any fracture of, or visible cracks in, the structure of the bedstead. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 03:27:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1979
45、:1985 4 BSI 12-1999 6.3 Rigidity of mattress support panel When tested in accordance with the method described in C.1 to C.4.1, C.4.4 and C.5 the mattress support panel shall not deflect at any position by more than 13 mm, and no perceptible permanent deflection shall remain after removal of the for
46、ce. There shall not be any fracture of, or visible cracks in, the structure of the bedstead. 6.4 Strength of headend and footend structures When tested in accordance with the method described in C.1 to C.4.1, C.4.5 and C.5 no perceptible permanent deflection shall remain after the removal of the for
47、ce. There shall not be any fracture of, or visible cracks in, the structure of the bedstead. 7 Marking The bedstead shall be marked with the following: a) the name or other means of identification of the manufacturer; b) the year of manufacture; c) the number and date of this British Standard, i.e.
48、BS 1979:19851). 1) Marking BS 1979:1985 on or in relation to a product is a claim by the manufacturer that the product has been manufactured in accordance with the requirements of the standard. The accuracy of such a claim is therefore solely the manufacturers responsibility. Enquiries as to the ava
49、ilability of third party certification to support such claims should be addressed to the Director, Quality Assurance Division, BSI, PO Box 375, Milton Keynes MK14 6LO for certification marks administered by BSI or to the appropriate authority for other certification marks. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 03:27:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1979:1985 BSI 12-19995 Appendix A Guidance on bedstead design and characteristics of surface finish A.1 Materials of construction other than steel Materials used for the construction of