1、BRITISH STANDARD CONFIRMED MARCH1991 BS1979:1985 Specification for Hospital ward bedsteads for psychiatric hospitals UDC 615:478.2:684.422.14:616.89BS1979:1985 This BritishStandard, having been prepared under the directionof the Health Care Standards Committee, was published under the authority ofth
2、e Board of BSI and comes intoeffect on 29November1985 BSI 12-1999 First published June 1953 First revision November 1985 The following BSI references relate to the work on this standard: Committee reference HCC/31 Draft for comment 83/53660 DC ISBN 0 580 13899 2 Committees responsible for this Briti
3、shStandard The preparation of this BritishStandard was entrusted by the Health Care Standards Committee (HCC/-) to Technical Committee HCC/31 upon which the following bodies were represented: Association of British Paediatric Nurses Association of National Health Service Supplies Officers British Pa
4、ediatrics Association British Surgical Trades Association Incorporated Department of Health and Social Security Royal College of Midwives Royal College of Nursing and National Council for Nurses of the UK Stainless Steel Fabricators Association of Great Britain Amendments issued since publication Am
5、d. No. Date of issue CommentsBS1979:1985 BSI 12-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Materials 1 3 Surface finish 1 4 Dimensions 1 5 Construction 3 6 Structural strength and stability 3 7 Marking 4 Appendix A Guidance on bedstead design and character
6、istics of surface finish 5 Appendix B Information to be supplied by the purchaser to the manufacturer 5 Appendix C Methods of test for structural strength and stability 5 Figure 1 Designation of dimensions of bedstead 1 Table 1 Requirements for durability of surface finish 2 Publications referred to
7、 Inside back coverBS1979:1985 ii BSI 12-1999 Foreword This revision of this BritishStandard has been prepared under the direction of the Health Care Standards Committee. It supersedes BS1979:1953 which was published under the title “Hospital ward bedsteads for mental hospitals”, and is now withdrawn
8、. 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 The specification of such performance requirements has superseded the
9、detailed requirements for materials, design and construction that were to be found in the1953 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 preparation of this revi
10、sion 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 the “instituti
11、onal” 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 BS4886-1 and BS4886-2 have not been included bec
12、ause they are not considered necessary for the use for which the bedsteads specified in this revision of BS1979 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 BS4886. A number of variations
13、 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 BritishStandard calls for the use of procedures that may be injurious to health if adequate precautions are not taken. It refers only to techni
14、cal 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 precautions should
15、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 application. Complia
16、nce 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, pagesi andii, pages1 to8, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had
17、amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS1979:1985 BSI 12-1999 1 1 Scope This BritishStandard specifies requirements for materials, finishes, dimensions, construction and strength for bedsteads of fixed height suitable for general purposes in
18、 psychiatric and geriatric hospitals and similar institutions. Requirements for height adjustment and ancillary fitments, such as cot sides and buffering devices are not included. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 Materials The fra
19、mework of the bedstead shall be made of steel tubing complying with the requirements for gradeERW5 of BS6323-5. 3 Surface finish 3.1 Durability The surface finish of the bedstead shall comply with the requirements specified in Table 1 when tested in accordance with the methods of test listed therein
20、. 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 bedstead. 3.2 Toxicity The surface finish shall comply with the requirements for the maximum levels of toxic metals specified in5.2 of
21、BS4751:1984. 4 Dimensions The overall length of the bedstead, shown as dimension A in Figure 1, shall be not greater than2234mm, including buffers if present. The length of the clear space, shown as dimension B in Figure 1, above the mattress support panel, between the headend and footend structures
22、 shall be within the range2010mm to2060mm. The width of the mattress support panel shall be not less than865mm and the overall width of the bedstead shall be not more than1075mm, including buffers if present. NOTEThe preferred height of the mattress support panel above the floor level is450 5mm (see
23、Appendix B). NOTEThis figure illustrates the designation of dimensions; it does not purport to specify design and does not otherwise form part of the specification. Figure 1 Designation of dimensions of bedsteadBS 1979:1985 2 BSI 12-1999 Table 1 Requirements for durability of surface finish Property
24、 Test method Test panel Number of samples Requirement Resistance to bending BS3900-E1; type2 apparatus;12mm mandrel Mild steel,1.2mm thick 3 Shall show no cracks or no loss of adhesion visible with unaided vision Resistance to scratching BS3900-E2; 3000g load Mild steel,1.2mm thick 3 Shall show no b
25、are metal Resistance to impact (falling weight) BS3900-E3; indentation of3mm with coating facing upwards Mild steel,1.2mm thick 3 Shall show no loss of adhesion Resistance to cupping BS3900-E4; indentation of3mm on coated and uncoated sides Mild steel,1.2mm thick 3 Shall show no cracks or no loss of
26、 adhesion visible with unaided vision Resistance to cross-cutting BS3900-E6; single cutting tool; manually operated; six cuts in each direction at2mm spacing Mild steel,1.2mm thick 3 Shall not exceed classification2 Resistance to humidity BS3900-F9; duration of test96h; no interim examination, no re
27、covery period Mild steel,1.2mm thick, coated on one face only 3 Shall show no colour change or formation of rust Resistance to liquids BS3900-G5; test method3; exposure time60min; no recovery period; no removal of coating after exposure; test area covered Test liquids: a) ethanol; b) acetone; c) gla
28、cial acetic acid,50%V/V in water Mild steel,1.2mm thick, coated on one face only 3 Shall show no blistering, pitting, softening or bleachingBS1979:1985 BSI 12-1999 3 5 Construction 5.1 Mattress support panel The mattress support panel shall be either a plastics-coated corrugated steel sheet or shall
29、 be of welded steel mesh construction with wire of diameter between3mm and5mm and with the major dimension of the apertures of the mesh in the range40mm to75mm. NOTESeeAppendix B for information to be supplied by the purchaser. 5.2 Legs The legs shall be either capable of folding flat or shall be re
30、movable. 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, shall be provided. It shall be capable of being permanently fixed to the mattress platform and it sha
31、ll not be possible to remove it without the use of tools. When tested in accordance with the large scale test given in BS476-7, the filled panel shall comply with the class1 requirements for ignitability. There shall not be any gap of more than5mm in the headend structure or between the headend stru
32、cture 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 fixed to the mattress platform. It shall not be possible to remove the footend structure without the u
33、se of tools. When tested in accordance with the large scale test given in BS476-7, the filled panel shall comply with the class1 requirements for ignitability. There shall not be any gap of more than5mm in the footend structure or between the footend structure and the mattress platform or mattress s
34、upport panel. NOTESeeAppendix 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 specified in5.5.2 or5.5.3. Castors shall comply with the requirements of BS2099-1 and shall be of not less than10
35、0mm nominal diameter. NOTESeeAppendix 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 buffering devices. 5.5.2 Bedsteads with two castors. There shall be two castors at the headend of the bedstead and two pl
36、astics or rubber stump feet at the footend. The feet shall be non-marking as defined in BS2099-1. The wheel and swivel of at least one of the castors shall be braked. 5.5.3 Bedsteads with four castors. There shall be two castors at the headend and two castors at the footend of the bedstead. The whee
37、l 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 locking device. 6 Structural strength and stability 6.1 Structural strength of bedstead under equally distributed l
38、oad When tested in accordance with the method described inC.1 toC.4.2 andC.5 the following criteria shall be satisfied: a) measurements taken at any of the specified positions during the application of the force shall not differ by more than38mm from the corresponding measurements taken before the a
39、pplication of the force; b) measurements taken at any of the specified positions after the removal of the force shall not differ by more than6.5mm from the corresponding measurements taken before the application of the force; c) there shall not be any fracture of, or cracks in, the structure of the
40、bedstead. 6.2 Structural strength and stability under unequally distributed load When tested in accordance with the method described inC.1 toC.4.1, C.4.3 andC.5 the following criteria shall be satisfied: a) measurements taken before the application of the force shall not differ by more than38mm from
41、 those taken under loaded conditions when the force has been applied for5min; b) the mattress platform shall return to within6.5mm of its original position within5min 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,
42、or visible cracks in, the structure of the bedstead.BS1979:1985 4 BSI 12-1999 6.3 Rigidity of mattress support panel When tested in accordance with the method described inC.1 toC.4.1, C.4.4 andC.5 the mattress support panel shall not deflect at any position by more than13mm, and no perceptible perma
43、nent deflection shall remain after removal of the force. 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 inC.1 toC.4.1, C.4.5 andC.5 no perceptible permanent de
44、flection shall remain after the removal of the force. 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) t
45、he number and date of this BritishStandard, i.e.BS1979:1985 1) . 1) Marking BS1979:1985 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 manuf
46、acturers responsibility. Enquiries as to the availability of third party certification to support such claims should be addressed to the Director, Quality Assurance Division, BSI, PO Box375, Milton Keynes MK146LO for certification marks administered by BSI or to the appropriate authority for other c
47、ertification marks.BS1979:1985 BSI 12-1999 5 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 parts of the bedstead other than the framework should not be affected by contact with boilin
48、g water or with a burning cigarette. Materials that are associated with the generation of static electricity, e.g.during bedmaking, should not be used. NOTEGuidance on the control of undesirable static electricity is given in BS5958. A.2 Design considerations The design of the bedstead should be suc
49、h as to facilitate cleaning of the structure and its immediate surrounds. It should have no sharp edges or corners and no protuberances that constitute a hazard to the patient or an attendant. Constructions that can harbour microbiological life, can generate or absorb airborne particles, or can permit moisture to accumulate should be avoided. Mattress support panels of coated sheet steel construction should have a surface finish with the characteristics given inA.3, and should have a surface with minimum interruptions consistent with adequate ventilation of the ma
