Cart (0)
  • No items in cart.
Total
$0
There is a technical issue about last added item. You can click "Report to us" button to let us know and we resolve the issue and return back to you or you can continue without last item via click to continue button.
Home
Content
Tour
eLibrary
Store
Search book title
Filters:
FORMAT
BOOKS
All Books
PACKAGES
All Packages
EDITION
to
PUBLISHER
AABC
(1)
AAMI
(337)
ACI
(589)
AISC
(54)
ASA
(234)
ASCE
(996)
ASHRAE
(657)
ASME
(2161)
ASSE
(117)
ASTM
(94624)
AWC
(54)
AWWA
(568)
BHMA
(124)
BICSI
(33)
BIFMA
(21)
BOMA
(20)
BSI
(94534)
CHD
(3)
CRSI
(17)
IAHSS
(1)
IAPMO
(374)
ICC
(315)
IEEE
(6731)
IES
(241)
ISEA
(16)
Joint Commission
(184)
Joint Commission Int.
(1)
NETA
(6)
NFPA
(1646)
TCNA
(17)
TMS
(19)
USGBC
(28)
WILEY
(4)
 
AR
(6)
AZ
(7)
CA
(115)
CT
(3)
FL
(57)
ID
(5)
IL
(5)
IN
(1)
KY
(1)
LA
(2)
MI
(25)
MN
(27)
NC
(27)
NJ
(13)
NY
(61)
OH
(24)
OR
(22)
PA
(7)
RI
(8)
SC
(20)
SD
(1)
TX
(3)
VA
(50)
VT
(6)
WA
(31)
CONTENT TYPE
 Act
 Admin Code
 Announcements
 Bill
 Book
 CADD File
 CAN
 CEU
 Charter
 Checklist
 City Code
 Code
 Commentary
 Comprehensive Plan
 Conference Paper
 County Code
 Course
 DHS Documents
 Document
 Errata
 Executive Regulation
 Federal Guideline
 Firm Content
 Guideline
 Handbook
 Interpretation
 Journal
 Land Use and Development
 Law
 Legislative Rule
 Local Amendment
 Local Code
 Local Document
 Local Regulation
 Local Standards
 Manual
 Model Code
 Model Standard
 Notice
 Ordinance
 Other
 Paperback
 PASS
 Periodicals
 PIN
 Plan
 Policy
 Product
 Product - Data Sheet
 Program
 Provisions
 Requirements
 Revisions
 Rules & Regulations
 Standards
 State Amendment
 State Code
 State Manual
 State Plan
 State Standards
 Statute
 Study Guide
 Supplement
 Sustainability
 Technical Bulletin
 All
  • BSI
    BS 6891:2015+A1:2019 Specification for the installation and maintenance of low pressure gas installation pipework of up to 35 mm (R114) on premises
    Edition: 2019
    $569.57
    / user per year

Description of BS 6891:2015+A1:2019 2019

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 1¼) 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).

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.

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 “protected area” 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.

This British Standard is not applicable to:

  1. service pipework and distribution systems;

  2. pipework contained within an appliance;

  3. bulk storage vessels;

  4. LPG pipework installed in leisure accommodation vehicles and for accommodation purposes in vehicles in accordance with BS EN 1949;

  5. boats, yachts and other vessels;

  6. gas pipework supplying or within appliances having their own gas supply, such as mobile heaters; or

  7. gas pipework supplying or within catering establishments covered by BS 6173.

Table 1 Pipework covered by BS 6891

Gas type Pipework Maximum nominal diameterA) Nominal operating pressure

mbarB)
2nd family

(NG)

 Downstream of the primary meter installation, but not downstream of the inlet of any appliance isolation valve or the inlet of the self‑sealing connector of any flexible connection R1¼ steel,

DN 35A)

 21
3rd family (LPG) Downstream of:

•      the emergency control valve (ECV) located on the outside of the property where no meter is fitted; or

•      the outlet of the final regulator where this is located downstream of the ECV; or

•      the outlet of the final regulator where this is located downstream of any cylinders and there is no ECV; or

•      the primary meter installation,

but not downstream of the inlet of any appliance isolation valve or the inlet of the self‑sealing connector of any flexible connection.

 R1¼ steel,

DN 35A)

 37 (propane)

28 (butane)

A) Dependent upon material type.

B) 1 bar = 105 N/m2 = 100 kPa.

NOTE Unless stated otherwise:

a) the diameter for pliable corrugated (stainless-steel) tubing refers to the inside diameter; and

b) the diameter for carbon, stainless-steel tubing, copper and polyethylene (PE) refers to the outside diameter.

Figure 1 2nd family gas installation with an internal meter

image

Key

1 Service pipe 7 Appliance isolation valve
2 Primary meter installation 8 Appliance
3 Installation pipework 9 Part of installation within the scope of BS 6891
4 Appliance connector R Regulator
5 Service isolation valve (where fitted) M Meter
6 Emergency control valve    

Figure 2 3rd family gas installation with cylinders

image

Key

1 Service pipework 6 Appliance isolation valve
2 Installation pipework 7 Appliance
3 Appliance connector 8 Part of installation within the scope of BS 6891
4 Cylinders R Regulator with over-pressure shut-off
5 Emergency control valve ACD Automatic changeover device

Figure 3 3rd family gas installation with bulk storage vessels

image

Key

1 Service pipework 6 Appliance isolation valve
2 Installation pipework 7 Appliance
3 Appliance connector 8 Part of installation within the scope of BS 6891
4 Bulk storage vessel(s) 9 Vessel isolation valve
5 Emergency control valve R Regulator with over-pressure shut-off

Figure 4 Selection of applicable standard(s) for gas installations

image
* Industrial and commercial

NOTE For commercial premises less than 35 mm, IGEM/UP/2 [12] may also be utilized.


Standard NumberBS 6891:2015+A1:2019
TitleSpecification for the installation and maintenance of low pressure gas installation pipework of up to 35 mm (R114) on premises
StatusConfirmed
Publication Date2019-07-08
Partially ReplacesBS 6891:2005+A2:2008, BS 5482-1:2005
AmendsBS 6891:2015
DescriptorsSteels, Walls, Underground, Pressure, Pipe fittings, Joints, Leak tests, Flow rates, Pipes, Corrugated, Buildings, Domestic pipework systems, Size, Dimensions, Fire safety, Ventilation, Fire safety in buildings, Stainless steels, Copper, Installation, Gas circuits, Floors, Safety measures, Design calculations, Pipework systems, Pressure testing, 2nd family gases, Malleable cast-iron, Plastics, Corrosion, Valves, Gas supply, Gas pipes, Pipe supports, Design, Corrosion protection
ICS91.140.40 Gas supply systems
CommitteeGSE/30
ISBN978 0 539 00238 6
PublisherBSI
Pages98

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
GROUPS
X