{"id":262684,"date":"2024-10-19T17:26:30","date_gmt":"2024-10-19T17:26:30","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-68912015a12019\/"},"modified":"2024-10-25T13:17:21","modified_gmt":"2024-10-25T13:17:21","slug":"bs-68912015a12019","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-68912015a12019\/","title":{"rendered":"BS 6891:2015+A1:2019"},"content":{"rendered":"

This British Standard specifies the design, installation, commissioning and maintenance of gas installation pipework carrying 2nd and 3rd family gas of up to 35 mm (R 1\u00bc) on premises, including residential park homes (2nd and 3rd family gas) and caravan holiday homes (2nd family gas) (see Table 1 and examples in Figure 1 to Figure 3; see also Figure 4).<\/p>\n

\n

NOTE 1 The principles of the standard can also be applied to the design, installation, commissioning and maintenance of gas installation pipework carrying 1st family gas.<\/p>\n<\/blockquote>\n

\n

NOTE 2 Annex A gives a method for calculating pipe sizes. Annex B discusses the sulfidation of natural gas installations, while Annex C summarizes the conclusions of a report on gas in intermediate floors. Guidance on determining whether an area can be deemed a \u201cprotected area\u201d is given in Annex D. Requirements for LPG final stage regulator and safety devices are specified in Annex E. Annex F discusses the need for gas pipework design and installation for commercial installations to satisfy regulatory requirements regarding explosive atmospheres.<\/p>\n<\/blockquote>\n

This British Standard is not applicable to:<\/p>\n

    \n
  1. \n

    service pipework and distribution systems;<\/p>\n<\/li>\n

  2. \n

    pipework contained within an appliance;<\/p>\n<\/li>\n

  3. \n

    bulk storage vessels;<\/p>\n<\/li>\n

  4. \n

    LPG pipework installed in leisure accommodation vehicles and for accommodation purposes in vehicles in accordance with BS EN 1949;<\/p>\n<\/li>\n

  5. \n

    boats, yachts and other vessels;<\/p>\n<\/li>\n

  6. \n

    gas pipework supplying or within appliances having their own gas supply, such as mobile heaters; or<\/p>\n<\/li>\n

  7. \n

    gas pipework supplying or within catering establishments covered by BS 6173.<\/p>\n<\/li>\n<\/ol>\n

    Table 1<\/b> Pipework covered by BS 6891<\/p>\n

    A)<\/sup> Dependent upon material type.<\/p>\n

    B)<\/sup> 1 bar = 105 N\/m2<\/sup> = 100 kPa.<\/p>\n

    \n

    NOTE Unless stated otherwise:<\/p>\n

    a) the diameter for pliable corrugated (stainless-steel) tubing refers to the inside diameter; and<\/p>\n

    b) the diameter for carbon, stainless-steel tubing, copper and polyethylene (PE) refers to the outside diameter.<\/p>\n<\/blockquote>\n

    Figure 1<\/b> 2nd family gas installation with an internal meter<\/p>\n

    Key<\/b><\/p>\n

    Figure 2<\/b> 3rd family gas installation with cylinders<\/p>\n

    Key<\/b><\/p>\n

    Figure 3 3rd family gas installation with bulk storage vessels<\/b><\/p>\n

    Key<\/b><\/p>\n

    Figure 4<\/b> Selection of applicable standard(s) for gas installations<\/p>\n

    PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
    5<\/td>\nForeword <\/td>\n<\/tr>\n
    7<\/td>\n1 Scope <\/td>\n<\/tr>\n
    8<\/td>\nTable 1 \u2014 Pipework covered by BS 6891
    Figure 1 \u2014 2nd family gas installation with an internal meter <\/td>\n<\/tr>\n
    9<\/td>\nFigure 2 \u2014 3rd family gas installation with cylinders
    Figure 3 \u2014 3rd family gas installation with bulk storage vessels <\/td>\n<\/tr>\n
    10<\/td>\nFigure 4 \u2014 Selection of applicable standard(s) for gas installations
    2 Normative references <\/td>\n<\/tr>\n
    13<\/td>\n3 Terms and definitions <\/td>\n<\/tr>\n
    17<\/td>\n4 Competence <\/td>\n<\/tr>\n
    18<\/td>\nTable 2 \u2014 Approval bodies and statutory regulations by country\/territory
    Table 3 \u2014 Competence requirements by country\/territory <\/td>\n<\/tr>\n
    19<\/td>\n5 Design and planning <\/td>\n<\/tr>\n
    20<\/td>\nFigure 5 \u2014 Sizing pipework \u2014 Design maximum pressure loss for typical installations <\/td>\n<\/tr>\n
    21<\/td>\n6 Materials and components <\/td>\n<\/tr>\n
    23<\/td>\n7 Jointing <\/td>\n<\/tr>\n
    25<\/td>\n8 Installation <\/td>\n<\/tr>\n
    27<\/td>\nFigure 6 \u2014 Non\u2011contact voltage detector (single pole) \u2014 Example <\/td>\n<\/tr>\n
    28<\/td>\nFigure 7 \u2014 Use of temporary continuity bond <\/td>\n<\/tr>\n
    32<\/td>\nFigure 8 \u2014 Position of main protective bonding conductor connection <\/td>\n<\/tr>\n
    33<\/td>\nFigure 9 \u2014 Typical notification where main protective bonding conductor is found not to be present <\/td>\n<\/tr>\n
    34<\/td>\nFigure 10 \u2014 AECV positions <\/td>\n<\/tr>\n
    36<\/td>\nFigure 11 \u2014 Typical exterior pipework <\/td>\n<\/tr>\n
    38<\/td>\nTable 4 \u2014 Maximum interval between pipework supports <\/td>\n<\/tr>\n
    39<\/td>\nFigure 12 \u2014 Notching and drilling of metal web joists and timber-engineered joists <\/td>\n<\/tr>\n
    40<\/td>\nFigure 13 \u2014 Limits for notching and drilling of solid timber floor joists <\/td>\n<\/tr>\n
    44<\/td>\nFigure 14 \u2014 Pipework in concrete compartment floors <\/td>\n<\/tr>\n
    45<\/td>\nFigure 15 \u2014 Pipework in timber fire compartment floors <\/td>\n<\/tr>\n
    47<\/td>\nFigure 16 \u2014 Typical examples of pipework installed in solid floors <\/td>\n<\/tr>\n
    50<\/td>\nFigure 17 \u2014 Typical examples of pipework installed in solid construction walls <\/td>\n<\/tr>\n
    54<\/td>\nFigure 18a \u2014 Typical examples of pipework installed in timber and light steel-framed construction walls <\/td>\n<\/tr>\n
    55<\/td>\nFigure 18b \u2014 Typical examples of pipework installed in timber and light steel-framed construction walls <\/td>\n<\/tr>\n
    56<\/td>\nFigure 18c \u2014 Typical examples of pipework installed in timber and light steel-framed construction walls <\/td>\n<\/tr>\n
    57<\/td>\nFigure 19 \u2014 Limits for drilling of wall studding <\/td>\n<\/tr>\n
    59<\/td>\nTable 5 \u2014 Buried external pipework <\/td>\n<\/tr>\n
    60<\/td>\nFigure 20 \u2014 Buried pipework <\/td>\n<\/tr>\n
    62<\/td>\nTable 6 \u2014 Free area of ventilation openings <\/td>\n<\/tr>\n
    63<\/td>\nFigure 21 \u2014 Cross\u2011sectional area of duct <\/td>\n<\/tr>\n
    64<\/td>\nFigure 22 \u2014 Typical pipework in multi\u2011storey buildings containing flats or maisonettes <\/td>\n<\/tr>\n
    66<\/td>\nFigure 23 \u2014 Copper and steel pipe in a protected area <\/td>\n<\/tr>\n
    69<\/td>\nFigure 24 \u2014 Typical method of accommodating movement for pipework passing through a masonry\/timber-frame wall
    9 Installation of flexible hoses, tubing, assemblies and their connections <\/td>\n<\/tr>\n
    71<\/td>\nFigure 25 \u2014 Identification of hoses, tubing and assemblies for use with LPG <\/td>\n<\/tr>\n
    72<\/td>\n10 Commissioning <\/td>\n<\/tr>\n
    73<\/td>\nTable 7 \u2014 Operating pressure (LPG) <\/td>\n<\/tr>\n
    75<\/td>\n11 Maintenance <\/td>\n<\/tr>\n
    76<\/td>\nAnnex A (informative)\u2002 Guide to sizing pipework installations <\/td>\n<\/tr>\n
    77<\/td>\nTable A.1 \u2014 Approximate natural gas pressure loss data (mbar\/m) – copper tube <\/td>\n<\/tr>\n
    78<\/td>\nTable A.2 \u2014 Approximate natural gas pressure loss data (mbar\/m) \u2013 steel tube <\/td>\n<\/tr>\n
    79<\/td>\nTable A.3 \u2014 Approximate LPG (propane) pressure loss data (mbar\/m) – copper tube <\/td>\n<\/tr>\n
    81<\/td>\nTable A.4 \u2014 Approximate LPG (propane) pressure loss data (mbar\/m) – steel tube <\/td>\n<\/tr>\n
    82<\/td>\nTable A.5 \u2014 Typical allowances for pressure loss of fittings <\/td>\n<\/tr>\n
    83<\/td>\nFigure A.1 \u2014 Example natural gas installation <\/td>\n<\/tr>\n
    84<\/td>\nTable A.6 \u2014 Sizing results <\/td>\n<\/tr>\n
    85<\/td>\nAnnex B (informative)\u2002 Sulfidation of natural gas installations <\/td>\n<\/tr>\n
    86<\/td>\nAnnex C (informative)\u2002 Summary and principal conclusions of the Advantica Research Project, Gas in intermediate floors, Report Number 6699 [28] <\/td>\n<\/tr>\n
    88<\/td>\nAnnex D (informative)\u2002 Protected area <\/td>\n<\/tr>\n
    89<\/td>\nAnnex E (normative)\u2002 LPG Final stage regulator and safety devices <\/td>\n<\/tr>\n
    90<\/td>\nTable E.1 \u2014 Pressure characteristics of various regulators (LPG) <\/td>\n<\/tr>\n
    92<\/td>\nTable E.2 \u2014 Minimum proximity distances for relief valve vent tips (millimetres)
    Annex F (informative)\u2002 Dangerous Substances and Explosive Atmospheres Regulations [17], [18] <\/td>\n<\/tr>\n
    94<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

    Specification for the installation and maintenance of low pressure gas installation pipework of up to 35 mm (R11<\/sup>4<\/sub>) on premises<\/b><\/p>\n\n\n\n\n
    Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
    BSI<\/b><\/a><\/td>\n2019<\/td>\n98<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":262686,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1275,2641],"product_tag":[],"class_list":{"0":"post-262684","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-91-140-40","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/262684","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/262686"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=262684"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=262684"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=262684"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}