This ISO 6164 square flange document gives general and dimensional specifications for flanged heads, flange clamps, ports and mounting surfaces applicable to four-screw, one-piece square flange clamp type tube connectors and hose fittings for use at a pressure of 42 MPa [420 bar 1) ]. It also specifies the dimensions of the seals to be used, as well as the grooves that house the seals.
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8 1 Scope This Code recommends good practice methods for the demolition (both partial and whole), as well as decommissioning, of sites including buildings and structures. It takes into account safety, health and issues which affect the protection of environment. Recommendations are included for: a) the proper, and effective, management of the demolition process; b) maintaining structural stability, through the provision of temporary structural support, where necessary; c) managing deliberate structural collapse. The Code gives recommendations for: Ð identifying and establishing responsibilities during all phases of the demolition process; Ð acquiring a knowledge of the site, including its former uses; Ð appropriate environmental management; Ð managing health and safety hazards; Ð carrying out risk assessments, and planning the work accordingly; Ð establishing and managing procedures effectively; Ð determining and managing safe exclusion zones. 2 Normative references The following normative documents contain provisions, which, through reference in this text, constitute provisions of this Code of Practice. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. For undated references, the latest edition of the publication referred to applies. BS , Noise and vibration control on construction and open sites Ð Part 1: Code of practice for basic information and procedures for noise and vibration control. BS , Noise and vibration control on construction and open sites Ð Part 2: Guide to noise and vibration control legislation for construction and demolition, including road construction and maintenance. BS , Noise and vibration control on construction and open sites Ð Part 4: Code of practice for noise and vibration control applicable to piling operations. BS 5607, Code of practice for safe use of explosives in the construction industry. BS 5837, Guide for trees in relation to construction. BS 5973, Code of practice for access and working scaffolds and special scaffold structures in steel. BS 5974, Code of practice for temporary installed suspended scaffolds and access equipment (partially superseded by BS EN 1808). BS 5975, Code of practice for falsework. BS 6100, Glossary of building and civil engineering terms. BS 6164, Code of practice for safety in tunnelling in the construction industry. BS , Loading for buildings Ð Part 2: Code of practice for wind loads. BS 6472, Guide to evaluation of human exposure to vibration in buildings (1 Hz to 80 Hz). BS 6482, Guide to measurement and evaluation of human exposure to vibration transmitted to the hand. BS , Code of practice for safe use of cranes Ð Part 1: General. BS , Code of practice for safe use of cranes Ð Part 2: Inspection, testing and examination. BS , Code of practice for safe use of cranes Ð Part 3: Mobile cranes. BS , Code of practice for safe use of cranes Ð Part 4: Lorry loaders. BS , Code of practice for safe use of cranes Ð Part 5: Tower cranes. BS EN 1808, Safety requirements on suspended access equipment Ð Design calculations, stability criteria, construction Ð Tests. 4 BSI
9 3 Terms and definitions For the purposes of this Code of Practice, the definitions in BS 6100, together with the following apply. 3.1 adjoining owners freeholders, owners, lessees, tenants and/or occupiers of a property adjoining the site of demolition 3.2 attachment assembly of components forming the working tool that can be mounted onto the base machine or (optional) equipment for specific use (see Figure 3) 3.3 base machine machine without equipment and attachment, that includes the mountings necessary to secure equipment, as required, e.g. operator protective structures for demolition (see Figure 3) 3.4 building owner person or organization having the right to demolish or partly demolish a building, including plant or other structure, by virtue of legal ownership or other legal authority 3.5 client initiator of the demolition project (usually the building owner) or, e.g. a main contractor NOTE 1 Client can also have a particular meaning in contractual relationships. NOTE 2 Client has a specific meaning under the Construction (Design and Management) Regulations 1994 (CDM Regulations 1994) [1] (see ). 3.6 cold cutting method of cutting with the generation of no incendiary sparks and little or no heat 3.7 competent person person who has training and experience relevant to the matter being addressed, and has an understanding of the requirements of the particular task being approached (see annex A) NOTE Such a person should understand the hazards and the methods to be implemented to eliminate or reduce the risks that may arise. For example, when on site, such a person should recognize at all times whether it is safe to proceed. 3.8 complex structure structure with unusual or complicated load paths or internal forces which, because they may not be obvious, makes the prediction of safe modes of failure during demolition difficult (and hence the need for the involvement of an appropriately competent person) 3.9 contaminated site site which harbours residual health hazards resulting from the presence of biological or chemical entities 3.10 decommissioning process whereby an area is brought from its fully operational status to one where all live or charged systems are rendered dead or inert and reduced to the lowest possible hazard level (see also 3.24) NOTE Decommissioning includes decontamination where appropriate. Some industries, e.g. the nuclear industry, have specific meanings for this term which include dismantling. In practice different hazard levels will apply. In this Code of Practice decommissioning does not include demolition or dismantling. BSI
16 4.2.5 Highways and roads General Where the demolition works would be helped by a partial or total closure of public and/or private roads and highways, the relevant roads or highway authorities (or other owner) should be approached at an early stage to obtain the necessary permissions. As periods of notice are involved, sufficient time should be allowed for the process to be completed within the requirements of each particular case. NOTE Temporary closures will often only be granted at weekends or between evening and early morning. The Road Traffic (Temporary Restrictions) Act 1991 [17] applies. Consideration should be given to making arrangements for temporary diversions of both pedestrian and vehicular traffic and discussions should take place at an early stage with, for example, the emergency services and bus operators. The requirements of pedestrians and all statutory undertakers should be taken into account (see 4.2.6). Where temporary traffic management is to be provided, chapter 8 of the Traffic Signs Manual [18] and the Code of Practice for Signing and Guarding at Road Works [19] should be consulted for guidance, even when the New Roads and Streetworks Act 1991 [12] does not apply Rights of access and avoidance of congestion The roads or highways authority and police should be consulted about site access, safety and matters of transport to avoid or minimize congestion, particularly in densely populated areas. Where access to a site is across a footway the demolition contractor should consult the roads or highways authority or other owner to obtain all necessary permissions. Suitable access to adjacent and nearby properties should be maintained. Access across such properties is a matter for the relevant owners; agreements should be negotiated and any indemnities confirmed. Footways, over which there are crossings, should be adequately strengthened to the authority's (or other owner's) satisfaction and at the contractor's expense. All works affecting features outside the curtilage of the site, e.g. footway lights, vaults and other voids under the highway, require the approval of the authority, which should be sought. NOTE 1 The relevant roads or highways authority can require vaults and voids to be filled in accordance with their specification, under their supervision and to their satisfaction, at the contractor's expense. Any proposals to use local streets as holding areas for site vehicles should be planned and should consider users and residents. NOTE 2 In some areas local streets would not be appropriate for use as holding areas for site vehicles Use of plant on or over highways or roads For any form of plant or equipment using the public highway for support, or oversailing the public highway to any extent, the permission of the appropriate authority should be obtained and applications and consents formally recorded. NOTE In some cases permits or licences are required. Where scaffolding or a crane jib will pass over adjoining property, a licence is required which should be sought from the freeholder/lessee/tenant/occupier. Proposals should be discussed with the authority at an early stage, before starting work on site, in order to facilitate the operation, reduce the risk of delay and place relationships with the community on a sound footing Erection of temporary structures on or over highways or roads Consent for the erection of all temporary structures (including scaffolds, fans, screens, hoardings and any supports to the remaining structure) on or over highways and roads should be obtained. These structures should be included as part of the contractor's ªtemporary structuresº and the consent should be for however long they remain in place. Such structures, when completed, should conform to the requirements of the statutory regulations and with any local authority requirements. Designs for support to remaining structures, e.g. faõades, or basement retaining walls, should be submitted to the local authority for approval. (See clause 16 for further advice.) NOTE 1 In some cases authorities will insist on such support being at the rear face of the structure. NOTE 2 Copies of the appropriate planning permission, and where necessary approval of details, is required to accompany applications for the approval of temporary structures Utilities Utilities, when they are statutory undertakers, have specific rights particularly of permanent and continuous access to their equipment. Arrangements should be made to ensure that those rights are planned for. Utilities that can be affected should be identified and consulted (see also and B.3). NOTE Statutory undertakers are subject to the provision of the New Roads and Street Works Act 1991 [12]. 12 BSI 2ff7e9595c
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