1、BRITISH STANDARD BS 5482-2: 1977 Reprinted, incorporating Amendments No. 1 to 5 inclusive Code of practice for Domestic butane- and propane- gas-burning installations Part 2: Installations in caravans and non-permanent dwellings formerly CP 339-2 UDC 728.7:64.06:696.2:683.8/.9:662.767.3/.4 ICS 43.10
2、0 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW CONFIRMED FEBRUARY 1988BS 5482-2:1977 This British Standard, having been prepared under the direction of the Gas Standards Committee, was published under the authority of the Executive Board on 31 August 1977 BSI 06-2001 First
3、published, as CP 339-2, November 1956 First revision, as BS 5482-2, August 1977 The following BSI references relate to the work on this standard: Committee reference GSE/31 Draft for comment 75/40000 DC ISBN 0 580 09774 9 Cooperating organizations The Gas Standards Committee, under whose direction t
4、his British Standard was prepared, consists of representatives from the following Government departments and professional and industrial organizations: British Gas Corporation* Department of Energy Department of the Environment* Heating and Ventilating Contractors Association Institution of Gas Engi
5、neers Institution of Heating and Ventilating Engineers Liquefied Petroleum Gas Industry Technical Association (UK)* National Association of Plumbing, Heating and Mechanical Services Contractors Society of British Gas Industries* Water-tube Boilermakers Association The organizations marked with an as
6、terisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard. British Compressed Gases Association Chief and Assistant Chief Fire Officers Association Consumer Standards Advisory Committee Department of Trad
7、e Fire Offices Committee Fire Protection Association Home Office Institution of Fire Engineers National Caravan Council Ltd. Ship and Boat Builders National Federation Amendments issued since publication Amd. No. Date of issue Comments 2736 September 1978 4000 May 1982 5051 June 1986 5204 March 1987
8、 12046 June 2001 Indicated by a sidelineBS 5482-2:1977 BSI 06-2001 i Contents Page Cooperating organizations Inside front cover Foreword iii Section 1. General 1S c o p e 1 2 References 1 3 Definitions 1 Section 2. Materials, components and appliances 4M a t e r i a l s 3 5 Components 4 6 Selection
9、of appliances 4 Section 3. Installation design 7 Basic layout of supply system 7 8 Cylinder requirement design considerations 7 9 Installation design considerations 7 10 High pressure stage design considerations 9 11 Low pressure stage design considerations 10 12 Siting of appliances 11 13 Flue desi
10、gn considerations 11 14 Ventilation design considerations 12 Section 4. Installation requirements 15 Installation of unions, joints, sectional cocks and valves 15 16 Installation of pipework 15 17 Installation of cocks 16 18 Installation of pressure regulators 16 19 Installation of appliances 16 Sec
11、tion 5. Inspection, testing and consumer instructions 20 Inspection and testing of new installations 19 21 Consumer instructions 19 Appendix A The safe use of LPG in caravans and non-permanent dwellings 19 Appendix B Testing of low pressure stage of installation 21 Figure 1 Guide to heating requirem
12、ents in touring caravans 22 Figure 2 Guide to heating requirements in residential caravans 23 Figure 3 High pressure stage manifolds 24 Figure 4 Pipe sizing chart 25 Figure 5 Diagrammatic circuit indicating butane terminal pressure, 4.25 m caravan with full load 26 Figure 6 Diagrammatic circuit indi
13、cating butane terminal pressure, 5.5 m caravan with full load 26 Figure 7 Diagrammatic circuit indicating butane terminal pressure, 6.75 m caravan with full load 27 Figure 8 Diagrammatic circuit indicating butane terminal pressure, 9.5 m caravan with full load 27 Figure 9 Diagrammatic circuit indica
14、ting butane terminal pressure, 12 m caravan with full load 28 Figure 10 Installation test apparatus 28 Figure 11 Bubble leak indicator 29BS 5482-2:1977 ii BSI 06-2001 Page Figure 12 Standard nozzle pressure point adaptor and washer for 8 mm ( in) i.d. flexible tubing 29 Table 1 Appliance rates, numb
15、er of cylinders and cylinder offtakes 8 Publications referred to 30 5 16 BS 5482-2:1977 BSI 06-2001 iii Foreword This British Standard code of practice is a revision of CP 339-2:1956, and in its preparation the opportunity has been taken to incorporate propane gas requirements and to express values
16、in SI units. In line with the policy to bring codes of practice into the numbering series for British Standards, this code is being published under the number BS 5482. Particular care has been taken in this standard in the section on ventilation with the object of overcoming special problems with ve
17、ntilation of motor caravans. Reference should be made to the current requirements of the Motor Vehicles (Construction and Use) Regulations as applying to caravans, motor caravans and mobile catering units, etc. As a code of practice, this British Standard takes the form of guidance and recommendatio
18、ns. It should not be quoted as if it were a specification and particular care should be taken to ensure that claims of compliance are not misleading. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correc
19、t 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 to iv, pages 1 to 31 and a back cover. The BSI copyright notice displayed in this document indicates whe
20、n the document was last issued. Sidelining in this document indicates the most recent changes by amendment.iv blankBS 5482-2:1977 BSI 06-2001 1 Section 1. General 1 1 Scope This Part of BS 5482 deals with the installation in caravans and non-permanent dwellings, mobile catering or other non-industri
21、al mobile units of systems using liquefied petroleum gases whether from cylinders or bulk supply at a pressure of 28 mbar 1) , for commercial butane and at 37 mbar for commercial propane. It gives guidance on the selection of materials, components and appliances, on design considerations, on install
22、ation requirements, on inspection and testing and on consumer instructions. Appendix A contains basic user guidance on safe practice for inclusion in the consumers manual. This standard does not cover the installation on site of bulk supplies of LPG, for which guidance is given in Health and Safety
23、Executive Guidance Notes CS 5. Portable appliances incorporating their own gas supply, e.g. those covered by BS 3879, are not considered part of the installation and thus are outside the scope of this code. The use of gas as an engine fuel for the propulsion of the vehicle is outside the scope of th
24、is code. 2 References The titles of the standards publications referred to in this code are listed on the inside back cover. 3 Definitions For the purposes of this Part of this code the following definitions apply, together with the relevant terms in BS 1179 and BS 5264. 3.1 caravan a generic term c
25、overing, for the purposes of this code, the following domestic types of caravan, whether on wheels or not: mobile home, motor caravan, touring caravan, touring residential caravan, residential caravan and permanent holiday caravan (i.e. one designed for holiday accommodation and intended to be sited
26、 permanently, or for a long period in one position) NOTE Definition of these terms can be found in BS 5264. 3.2 non-permanent dwelling any domestic dwelling not covered by BS 5482-1 3.3 liquefied petroleum gas (LPG) this term as used in this code means and includes commercial butane and commercial p
27、ropane as defined in BS 4250 (See A.1 for some general properties.) 3.4 high pressure stage that part of the installation between the valve of the cylinder and the inlet of the pressure regulator NOTE The high pressure stage and any intermediate stage of a bulk supply are outside the scope of this c
28、ode. 3.5 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 NOTE This system is used for propane bulk installations where the tank position is some distance from the point of usage; it can also
29、 apply to propane cylinder installations in similar circumstances and when the gas demand is heavy. The first stage regulator at the tank or cylinder position is set to deliver gas at a pressure within the range of 70 mbar to 300 mbar to a secondary regulator set at the appliance operating pressure,
30、 installed externally at the point of entry to the caravan or dwelling. 3.6 low pressure stage that part of the installation between the outlet of the single stage pressure regulator (or intermediate stage regulator if used) and the inlet of the appliance 1) 1 mbar = 10 2N/m 2= 100 Pa.BS 5482-2:1977
31、 2 BSI 06-2001 Section 1 3.7 cylinder a portable and refillable vessel of approved design containing LPG under pressure 3.8 bulk tank a permanently installed vessel of approved design containing liquefied petroleum gas under pressure 3.9 low pressure regulator an apparatus for automatically maintain
32、ing a constant outlet pressure at the level recommended for the appliances in use 3.10 gas meter an apparatus for measuring the volume of LPG in vapour form passing through it. Gas meters can be either of a “credit” or “prepayment” type. The latter incorporates means, in the low pressure line, by wh
33、ich a preset volume of gas is delivered on insertion of a coin or token 3.11 manual reset low pressure cut-off valve an item of equipment which automatically shuts off the gas supply in the event of the supply pressure falling below a predetermined value and requiring a manual operation to re-establ
34、ish the supply. The device is normally fitted in conjunction with a prepayment meter 3.12 catalytic space heater a space-heating 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 tem
35、perature below that at which combustion would occur in the absence of the catalyst NOTE This definition does not include catalytic heaters in which fuel premixing of gas and air is effected before the catalytic bed is reached, nor does it include appliances employing after-burners in which products
36、of incomplete combustion from normal flames are further oxidized over a catalyst. 3.13 atmosphere sensitive cut-off device a device which is designed to shut off the main gas supply to an appliance when the CO 2content of the surrounding atmosphere exceeds a given level. Such devices normally compri
37、se a vitiation sensitive pilot in conjunction with a suitable flame failure device 3.14 low bed-temperature cut-off device a device, actuated by the temperature of the catalytic bed, which is designed to shut off the main gas supply to an appliance when the catalytic bed drops below the temperature
38、of good catalytic oxidization 3.15 pressure relief valve a valve incorporated to protect a system against excessive pressure. It will vent to atmosphere when a predetermined maximum pressure is attainedBS 5482-2:1977 BSI 06-2001 3 Section 2. Materials, components and appliances 2 4 Materials 4.1 Pip
39、ework materials 4.1.1 Recommended. The following materials are recommended for general use 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 cou
40、plings and protected against corrosion, e.g. by galvanizing and painting. c) Stainless steel tube and appropriate compression or screwed fittings. 4.1.2 Not recommended. The following materials are not recommended for general use for installation pipework for the reasons shown. a) Aluminium (corrosi
41、on). b) Composition and lead (creep). c) Brass tubing (of a kind that is subject to season cracking). NOTE Brass tubes that comply with the requirements of BS 2871-2 designation CZ 126 and CZ 110 which have been given a final drawing operation after annealing are considered suitable. d) Plastics (lo
42、w melting point and low-temperature embrittlement). NOTE Tubing of the type fabricated from sheet steel, coated internally and externally and wrapped should not be used externally because it is subject to atmospheric corrosion. 4.2 Material used for other than pipework. Plastics fittings are not rec
43、ommended. 4.3 Selected materials. The materials used should comply with the requirements of the relevant British Standards, e.g. BS 2871, Copper and copper alloys, tubes Part 1: Copper tubes for water, gas and sanitation Part 2: Tubes for general purposes. BS 864, Capillary and compression tube fitt
44、ings of copper and copper alloy Part 2: Metric units. BS 1387, Steel tubes and tubulars suitable for screwing to BS 21 pipe threads. BS 143 any other water heater should be connected to a flue. However an instantaneous sink water heater should be flued if fitted in a confined space. (See 12.5 on the
45、 use of water heaters with showers.) c) Preference should always be given to the use of room sealed appliances. d) A water heater should be selected only if it is fitted with a flame failure device, arranged to shut off the main and pilot (where fitted) gas supplies in the event of flame failure. 6.5 Selection of central heating systems As an alternative to individual appliances providing separate heating and hot water services, consideration may be given to the installation of a wet type central heating and/or hot water system.
