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1、BRITISH STANDARD BS 5482-1: 1994 Incorporating Amendment No. 1 Domestic butane- and propane-gas-burning installations Part 1: Specification for installations at permanent dwellings ICS 91.140.20; 91.140.65; 97.040.20; 97.040.30 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:31:00 GMT+00:0
2、0 2006, Uncontrolled Copy, (c) BSI BS 5482-1:1994 This British Standard, having been prepared under the direction of the Gas Standards Engineering Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 January 1994 BSI 12-1998 First published as CP 338
3、 October 1957 and CP 339 November 1956 Second edition as BS 5482-1 January 1979 Third edition January 1994 The following BSI references relate to the work on this standard: Committee reference GSE/31 Draft for comment 92/78340 DC ISBN 0 580 22295 0 Committees responsible for this British Standard Th
4、e preparation of this British Standard was entrusted by the Gas Standards Engineering Policy Committee to Technical Committee GSE/31, upon which the following bodies were represented: British Fire Services Association British Marine Industries Federation British Waterways Board Caravan Club Consumer
5、 Policy Committee of BSI Consumers Association Department of Trade and Industry (Consumer Safety Unit, CA Division) Department of Transport (Marine Directorate) Health and Safety Executive Home Office Institution of Fire Engineers LP Gas Association Loss Prevention Council National Association of Pl
6、umbing, Heating and Mechanical Services Contractors National Caravan Council Limited Society of British Gas Industries The Council for Registered Gas Installers Institute of Wastes Management Coopted members Amendments issued since publication Amd. No.DateComments 9167March 1997Indicated by a sideli
7、ne in the margin Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:31:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5482-1:1994 BSI 12-19981 Contents Page Committees responsibleInside front cover Foreword2 Section 1. General 1.1Scope3 1.2References3 1.3Definitions3 Section 2. Materials, c
8、omponents and appliances 2.1Materials5 2.2Components5 2.3Selection of appliances5 Section 3. Installation design 3.1Layout of supply system7 3.2Cylinder supply7 3.3Installation design of cylinders and tanks7 3.4High pressure stage design9 3.5Low pressure stage design10 3.6Siting of appliances14 3.7F
9、lues14 3.8Ventilation14 Section 4. Installation 4.1Installation of unions, joints, sectional cocks and valves16 4.2Installation of pipework16 4.3Installation of pressure regulators16 4.4Installation of appliances17 Section 5. Inspection, testing and user instructions 5.1Inspection and testing of new
10、 installations18 5.2User instructions18 Annex A (normative) Testing of low pressure stage of installation19 Annex B (normative) Testing of high pressure stage of installation22 Annex C (normative) Testing of low pressure stage of installation for pressure loss23 Annex D (informative) Model emergency
11、 action notice or leaflet for users of liquefied petroleum gas23 Figure 1 Cylinder location8 Figure 2 High pressure stage manifolds10 Figure A.1 Installation test apparatus20 Figure A.2 Bubble leak indicator21 Figure A.3 High pressure leakage test21 Figure A.4 Standard nozzle pressure point adaptor
12、and washer for 8 mm ( in) i.d. flexible tubing22 Table 1 Appliance heat input and gas rate7 Table 2 Recommended offtakes for temperate climates7 Table 3 Pipe size11 Table 4 Pipe sizing12 Table 5 Equivalent lengths of pipe for fittings13 List of references25 5 16 - - Licensed Copy: sheffieldun sheffi
13、eldun, na, Mon Dec 04 16:31:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5482-1:1991 2 BSI 12-1998 National foreword This Part of BS 5482 has been prepared under the direction of the Gas Standards Engineering Policy Committee. It supersedes BS 5482-1:1979 which is withdrawn. NOTEThis standard ha
14、s been written in the form of a practice specification (see clause 6 of PD 6501-1:1982). To comply with this specification, users have to comply with all of its requirements. Users may depart from recommendations, but this should be on their own responsibility and they would be expected to have good
15、 reasons for doing so. 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. In particular, att
16、ention is drawn to the following statutory regulations: a) The Gas Safety (Installation and Use) Regulations 1994 (SI 1886) (as amended) 1; b) The Gas Safety (Installation and Use) (Amendment) Regulations 1996 (SI 1996 No. 550); c) The Building Regulations 1991 (SI 2768) (as amended) 2; d) The Build
17、ing Standards (Scotland) Regulations 1990 (SI 2179) (as amended) 3; e) Building Regulations (Northern Ireland) 1990 (SR 159) (as amended) 4; f) The Gas Appliances (Safety) Regulations 1995 (SI 1629). Summary of pages This document comprises a front cover, an inside front cover, pages 1 to 26, an ins
18、ide 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: sheffieldun sheffieldun, na, Mon Dec 04 16:31:00 GMT+00:00 2006, Uncontrolled Copy, (
19、c) BSI BS 5482-1:1994 BSI 12-19983 Section 1. General 1.1 Scope This Part o f BS 5482 specifies requirements for the installation at permanent dwellings of domestic systems using liquefied petroleum gases (LPG), whether from cylinders or bulk supply, at a pressure of 28 mbar1) for commercial butane
20、and of 37 mbar for commercial propane. It makes recommendations on the selection of materials, components and appliances, on design considerations, on installation requirements, on inspection and testing and on consumer instruction. This standard applies to the installation of liqufied petroleum gas
21、 appliances which conform to recognized national standards. This standard does not cover the installation requirements for bulk tank supplies of liquefied petroleum gas, for which guidance is given in Health and Safety Executive Guidance Note HS(G)34 5. Appliances incorporating their own gas supply
22、are not considered to be part of the installation and are thus outside the scope of this standard. NOTEIt is recognized that this standard may be referred to for LPG installations other than those concerned with domestic systems at permanent dwellings. In these instances it has to be borne in mind t
23、hat other codes of practice, standards and regulations may apply. Annexes A, B and C give test procedures for low pressure and high pressure stages of installation. Annex D gives an example of an emergency action notice or leaflet for users of liquefied petroleum gas. 1.2 References 1.2.1 Normative
24、references This Part of BS 5482 incorporates, by reference, provisions from specific editions of other publications. These normative references are cited at the appropriate points in the text and the publications are listed on page 25. Subsequent amendments to, or revisions of, any of these publicat
25、ions apply to this Part of BS 5482 only when incorporated in it by updating or revision. 1.2.2 Informative references This Part of BS 5482 refers to other publications that provide information or guidance. Editions of these publications current at the time of issue of this standard are listed on pag
26、e 26, but reference should be made to the latest editions. 1.3 Definitions For the purposes of this Part of BS 5482, the definitions given in BS 1179:1967, BS 1179-6:1980, BS 6760:1990 and BS 5440-1:1990 and BS 5440-2:1989 apply together with the following. 1.3.1 permanent dwelling structure of a pe
27、rmanent nature, to which appropriate building regulations apply and which is used primarily for domestic purposes 1.3.2 liquefied petroleum gas (LPG) commercial butane and commercial propane NOTESee BS 4250-1:1987. 1.3.3 high pressure stage that part of the installation between the valve of the cyli
28、nder/tank and the inlet of the high pressure (1st stage) regulator 1.3.4 intermediate pressure stage that part of the installation between a first stage regulator sited at the tank or cylinder position and a second stage regulator 1.3.5 low pressure stage that part of the installation between the ou
29、tlet of the single stage pressure regulator (or second stage regulator when an intermediate stage is used) and the inlet of the appliance 1.3.6 cylinder portable and refillable vessel of approved design containing LPG under pressure 1.3.7 bulk tank permanently installed vessel of approved design for
30、 the storage of LPG under pressure which is filled in situ 1.3.8 low pressure regulator apparatus for automatically maintaining a constant gas outlet pressure at the level recommended for the appliances in use 1) 1 mbar = 102 N/m2 = 100 Pa. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:3
31、1:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5482-1:1994 4 BSI 12-1998 Section 1 1.3.9 gas meter apparatus for measuring the volume of LPG in vapour form at low pressure; meters may either be of a “credit” or of a “prepayment” type. The latter incorporates means by which a pre-set volume of ga
32、s is delivered on insertion of a coin or token 1.3.10 manual reset low pressure cut-off valve device which automatically shuts off the gas supply in the event of the supply pressure falling below the predetermined value and requiring a manual operation to re-establish the supply 1.3.11 atmosphere se
33、nsitive cut-off valve item of equipment designed to shut off the main gas supply to an appliance when the CO2 content of the surrounding atmosphere exceeds a given level 1.3.12 safety valve automatic valve incorporated to protect a cylinder or system against excessive pressure. It will vent to atmos
34、phere when a predetermined maximum pressure is attained 1.3.13 diffusive catalytic space heater appliance in which neat gas diffuses through a catalytic bed and is flamelessly oxidized by oxygen which has diffused into the bed from the surrounding atmosphere at a temperature below that at which comb
35、ustion would occur in the absence of the catalyst NOTEThis definition does not include catalytic heaters in which complete premixing of gas and air is effected before the catalytic bed is reached, nor does it include appliances employing after-burners in which products of incomplete combustion from
36、normal flames are further oxidized over a catalyst. 1.3.14 low bed-temperature cut-off device device which cuts off the gas supply to an appliance when the catalytic bed ceases to operate satisfactorily 1.3.15 room-sealed appliance Appliance which, when in operation, has the combustion system, inclu
37、ding the air inlet and the products outlet, isolated from the room or space in which the appliance is installed Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:31:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5482-1:1994 BSI 12-19985 Section 2. Materials, components and appliances 2.1 M
38、aterials 2.1.1 Pipework materials The following materials shall be used for installation pipework: a) solid drawn copper tube used with copper or copper alloy fittings; b) steel tube used with wrought iron, low-carbon steel or malleable cast iron fittings, or steel compression couplings and protecte
39、d against corrosion, e.g. by galvanizing and painting; c) stainless steel tube and appropriate compression or screwed fittings. COMMENTARY AND RECOMMENDATIONS ON 2.1.1 1) Brass tubes conforming to BS 2871-2 (designation CA 126 or CZ 110) which have been given a final drawing operation after annealin
40、g are considered suitable. 2) Plastics pipes and fittings should not be used inside a dwelling. 3) Malleable cast iron fittings are only suitable for intermediate and low pressure stage installations. 4) The following materials are not recommended for general use for installation pipework for the re
41、asons shown in parenthesis: i) aluminium (subject to corrosion); ii) composition and lead (subject to creep); iii) brass tubing (subject to seasonal cracking); iv) tubing of the type fabricated from sheet steel, coated internally and externally and wrapped, should not be used externally because it i
42、s subject to atmospheric corrosion. 2.1.2 Selection of materials All materials used in the installation shall conform to the requirements of the relevant British Standards, e.g. BS 21, BS 143 b) wall-mounting; c) built-in. Refrigerators of type c) may have either integral inlet and outlet ventilatin
43、g louvres, or inlet and outlet louvres positioned remote from the refrigerator, provided there is adequate provision for air circulation (see 4.4.4). 2.3.8 Tumble dryers Tumble dryers shall conform to BS 5258-17:1992. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:31:00 GMT+00:00 2006, Un
44、controlled Copy, (c) BSI BS 5482-1:1994 BSI 12-19987 Section 3. Installation design 3.1 Layout of supply system Layout shall be such that the length of pipe from the inlet of the gas supply to the highest rated appliances is as short as possible and all pipe runs, particularly at intermediate pressu
45、re stage, shall be as short as practicable. COMMENTARY AND RECOMMENDATIONS ON 3.1 Further information is given in the codes of practice of the Liquefied Petroleum Gas Association 6,7. 3.2 Cylinder supply Consideration shall be given to the guidance provided in Table 1 and Table 2, as appropriate to
46、the appliance. COMMENTARY AND RECOMMENDATIONS ON 3.2 Guidance given in Table 1 on the number of cylinders that should be provided in parallel to supply the installation is based on the evaporative capacity of the cylinders specified and on gas rates for different appliances. To ensure continuity of
47、gas supply it is also advisable to stock an equivalent number of replacement cylinders. Table 1 Appliance heat input and gas ratea The number of cylinders necessary may be calculated by totalling the gas rate for each appliance in kilograms per hour and dividing this total by the recommended offtake
48、 for the size of cylinder chosen (see Table 2). Table 2 Recommended offtakes for temperate climates 3.3 Installation design of cylinders and tanks 3.3.1 General The cylinder position shall afford ease of access to facilitate changing and quick removal in case of necessity. Cylinders shall be install
49、ed in the upright position with valves uppermost so that only vapour is withdrawn in use. COMMENTARY AND RECOMMENDATIONS ON 3.3.1 It is recommended that LPG cylinders are stored outside buildings. (See Health and Safety Executive Guidance Note CS 4 8.) 3.3.2 Cylinder location (propane) Cylinders shall be located outside buildings in the open air and situated on firm level ground in a well ventilated location (see Figure 1). Cylinders shall be located: a) where they remain readily accessible at all times; b) where they do not obstruct
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