{"id":380370,"date":"2024-10-20T03:06:33","date_gmt":"2024-10-20T03:06:33","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-92512021-tc\/"},"modified":"2024-10-26T05:37:56","modified_gmt":"2024-10-26T05:37:56","slug":"bs-92512021-tc","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-92512021-tc\/","title":{"rendered":"BS 9251:2021 – TC"},"content":{"rendered":"

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\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\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\ncompares BS 9251:2021 <\/td>\n<\/tr>\n
2<\/td>\nTRACKED CHANGES
Text example 1 \u2014 indicates added text (in green) <\/td>\n<\/tr>\n
5<\/td>\nSummary of pages <\/td>\n<\/tr>\n
6<\/td>\nForeword
Publishing information
Supersession
Relationship with other publications
Information about this document <\/td>\n<\/tr>\n
7<\/td>\nUse of this document <\/td>\n<\/tr>\n
8<\/td>\nPresentational conventions
Contractual and legal considerations
Compliance with a British Standard cannot confer immunity from legal obligations.
Compliance with a British Standard cannot confer immunity from legal obligations. <\/td>\n<\/tr>\n
9<\/td>\n1 Scope <\/td>\n<\/tr>\n
10<\/td>\n2 Normative references
Standards references <\/td>\n<\/tr>\n
11<\/td>\nOther references
3 Terms and definitions
3.1 alarm device
3.2 alarm receiving centre
3.3 alarm test valve
3.4 area of operation
3.5 authority having jurisdiction (AHJ)
3.6 backflow
3.7 backflow prevention device
3.8 compartment <\/td>\n<\/tr>\n
12<\/td>\n3.8 building height
3.9 client
3.10 compartment <\/td>\n<\/tr>\n
13<\/td>\n3.93.11 competent person
3.103.12 concealed sprinkler
3.113.13 crawl space
3.123.14 design density
3.133.15 effective capacity
3.143.16 fusible link sprinkler
3.153.17 glass bulb sprinkler
3.163.18 hydraulically most favourable area
3.173.19 hydraulically most unfavourable area
3.153.20 mains water supply
3.153.21 maximum flow demand
3.203.22 pendent sprinkler
3.213.23 priority demand valve
3.223.24 pump <\/td>\n<\/tr>\n
14<\/td>\n3.233.25 recessed sprinkler
3.243.26 residential pattern sprinkler
3.253.27 service pipe
3.28 shadow area
3.263.29 sidewall pattern sprinkler
3.273.30 sprinkler system
3.283.31 stop valve
3.283.32 stored water supply
3.303.33 upright sprinkler
3.313.34 vulnerable people
3.323.35 water undertaker
3.333.36 wholesome water <\/td>\n<\/tr>\n
15<\/td>\n4 Preliminary work and consultation
4.1 Initial considerations
4.2 Consultation <\/td>\n<\/tr>\n
18<\/td>\n4.2.4 Resilience of system <\/td>\n<\/tr>\n
19<\/td>\n4.3 Category of system
The category of system should be determined by the type of building as shown in Table 1, up to a maximum height of 45 m. If the type of building is not listed in Table 1, or for buildings over 45 m, then the AHJ(s) should be consulted to agree which t…
4.4 Use of sprinklers as a compensatory feature <\/td>\n<\/tr>\n
20<\/td>\n4.5 Special circumstances <\/td>\n<\/tr>\n
21<\/td>\n4.3 Category of system <\/td>\n<\/tr>\n
22<\/td>\n5 Design
5.1 General
5.2 System type
5.3 Design density and duration of supply
5.3.1 General <\/td>\n<\/tr>\n
24<\/td>\n5.3.2 Minimum design parameters
5.3.3 System flow rate
5.4 Extent of sprinkler protection <\/td>\n<\/tr>\n
25<\/td>\n5.5 Sprinkler coverage and positioning <\/td>\n<\/tr>\n
26<\/td>\n5.5 Classification of residential and non-residential occupancies <\/td>\n<\/tr>\n
27<\/td>\n5.6 Residential pattern sprinkler heads
5.6.1 General <\/td>\n<\/tr>\n
28<\/td>\n5.6.2 Minimum operating pressure and flow
5.6.3 Temperature rating of sprinklers
5.6.4 Sprinkler connection
5.6 Ordinary hazard protected areas <\/td>\n<\/tr>\n
30<\/td>\n5.7 Hydraulic calculations
5.7 Sprinkler coverage and positioning
5.7.1 General <\/td>\n<\/tr>\n
31<\/td>\n5.7.2 Permitted obstruction to residential sprinklers <\/td>\n<\/tr>\n
32<\/td>\n5.8 Water supplies
5.8.1 General
5.8.2 Types of supply <\/td>\n<\/tr>\n
33<\/td>\n5.8.3 Mains water supply
5.8.3.1 General
5.8.3.2 Design flow rate for mains water supply connections
5.8.3.3 Supply pipe sizing
5.8.4 Stored water supply
5.8.4.1 General <\/td>\n<\/tr>\n
34<\/td>\n5.8.4.2 Stored water capacity
Figure 1 Stored water supply <\/td>\n<\/tr>\n
35<\/td>\n5.8.4.3 Dedicated stored water supply
5.8.4.4 Shared stored water supply
5.8.4.5 Reduced capacity of stored water supply
5.8.5 Backflow prevention <\/td>\n<\/tr>\n
36<\/td>\n5.8 Ceiling pockets
5.9 Pumps
5.9.1 General <\/td>\n<\/tr>\n
37<\/td>\n5.9.2 Combined sprinkler and domestic supply pump
5.9.3 Dedicated sprinkler pump
5.9 Residential pattern sprinkler heads
5.9.1 General
5.9.2 Minimum operating pressure and flow
5.9.3 Temperature rating of sprinklers
5.9.4 Sprinkler connection <\/td>\n<\/tr>\n
38<\/td>\n5.10 Pipes and fittings
5.10 Hydraulic calculations
5.11 Valves <\/td>\n<\/tr>\n
39<\/td>\n5.11 Water supplies
5.11.1 General
5.11.2 Types of supply
5.11.3 Mains water supply
5.11.3.1 General <\/td>\n<\/tr>\n
40<\/td>\n5.11.3.2 Design flow rate for mains water supply connections
5.11.3.3 Supply pipe sizing
5.11.4 Stored water supply
5.11.4.1 General
5.11.4.2 Stored water capacity <\/td>\n<\/tr>\n
41<\/td>\n5.11.4.3 Dedicated stored water supply
5.11.4.4 Shared stored water supply <\/td>\n<\/tr>\n
44<\/td>\n5.11.4.5 Reduced capacity of stored water supply
5.11.5 Backflow prevention <\/td>\n<\/tr>\n
45<\/td>\n5.12 Frost protection
5.12 Pumps
5.12.1 General <\/td>\n<\/tr>\n
46<\/td>\n5.12.2 Electrical supply <\/td>\n<\/tr>\n
47<\/td>\n5.12.3 Combined sprinkler and domestic supply pump
5.12.4 Dedicated sprinkler pump <\/td>\n<\/tr>\n
48<\/td>\n5.12.5 Enhanced water supply
5.12.5.1 General
5.12.5.2 Option 1
5.12.5.3 Option 2 <\/td>\n<\/tr>\n
50<\/td>\n5.13 Alarm system
5.13.1 General
5.13.2 Alarm devices
Whilst in some domestic and residential buildings the actuation of the fire alarm triggers immediate and total evacuation of the premises other residential buildings are designed so that the initial alarm is sounded only in the dwelling where the fire… <\/td>\n<\/tr>\n
51<\/td>\nb) interfaced with an automatic fire detection and alarm system. Where the property is fitted with an automatic fire detection and alarm system to at least the minimum grade and category recommended in BS 5839, the sprinkler alarm device may be interf…
5.13.3 Multi-storey blocks of flats
a) The alarm zone should cover no more than a single floor.
b) The individual dwellings should be fitted with an LD1 automatic fire detection and alarm system with a minimum of a grade D power supply, designed, installed and maintained in accordance with BS 5839-6:2013.
c) The sprinkler alarm device should be connected to suitable control and indicating equipment so that management are alerted and the emergency action plan can be initiated.
5.13.4 Transmission of alarm signals to alarm receiving centres
5.13.5 Electrically operated alarm devices
5.13 Pipes and fittings <\/td>\n<\/tr>\n
53<\/td>\n5.14 Flexible sprinkler connection
5.15 Valves <\/td>\n<\/tr>\n
54<\/td>\n5.16 Pressure reducing valves
5.17 Frost protection
5.18 Sprinkler system fire and fault alarm functionality <\/td>\n<\/tr>\n
55<\/td>\n5.18.1 General
5.18.2 Fault alarms <\/td>\n<\/tr>\n
56<\/td>\n5.18.3 Sprinkler fire alarms
5.18.3.1 All buildings <\/td>\n<\/tr>\n
57<\/td>\n5.18.3.2 Additional recommendations for multi-storey blocks of flats
5.18.3.3 Electrically operated alarm and fault devices
6 Installation, commissioning and documentation
6.1 Installation
6.1.1 General
6.1.2 Pipework
6.1.2.1 General <\/td>\n<\/tr>\n
58<\/td>\n6.1.2.2 Pipework support
6.1.2.3 Pipework through structural timbers
6.1.2.3 Pipework through construction elements <\/td>\n<\/tr>\n
59<\/td>\n6.1.3 Sprinkler heads
6.2 Commissioning
6.2.1 General
6.2.2 Leakage test
6.2.3 Hydraulic test
6.2.4 Alarm test
6.2.5 Compliance certificate <\/td>\n<\/tr>\n
60<\/td>\n6.2 Commissioning
6.2.1 General
6.2.2 System air purge
6.2.3 Leakage test
6.2.4 Hydraulic test
6.2.5 Alarm test <\/td>\n<\/tr>\n
61<\/td>\n6.2.6 Compliance certificate
6.3 Documentation
6.3.1 Presentation
6.3.2 Log book
6.3.3 Documents <\/td>\n<\/tr>\n
62<\/td>\n6.3.3 Operation and maintenance (O&M) manual <\/td>\n<\/tr>\n
63<\/td>\n6.4 System data label
6.4 Block plan
6.5 System data label
6.6 Location plate <\/td>\n<\/tr>\n
64<\/td>\n7 Maintenance
7.1 Inspecting and testing <\/td>\n<\/tr>\n
65<\/td>\n7.1.1 General
7.1.2 Yearly routine <\/td>\n<\/tr>\n
66<\/td>\n7.1.3 Long-term inspection and testing <\/td>\n<\/tr>\n
67<\/td>\nAnnex A (informative) <\/td>\n<\/tr>\n
73<\/td>\nAnnex B (normative)
Hydraulic calculations
B.1 Static pressure
B.2 Flow from a sprinkler head
B.3 Pipe friction loss <\/td>\n<\/tr>\n
75<\/td>\nB.5 Pressure loss through fittings and valves <\/td>\n<\/tr>\n
76<\/td>\nB.6 Maximum flow demand calculation <\/td>\n<\/tr>\n
78<\/td>\nB.7 Sprinkler head layout and hydraulic design process <\/td>\n<\/tr>\n
79<\/td>\nEXAMPLE <\/td>\n<\/tr>\n
82<\/td>\nAnnex C (normative)
Hydraulic calculations
C.1 Static pressure
CC.2 Flow from a sprinkler head
C.3 Pipe friction loss <\/td>\n<\/tr>\n
83<\/td>\nC.4 Pressure loss through fittings and valves
Table C.2a K values for carbon steel tube conforming to BS EN 10255, Medium series <\/td>\n<\/tr>\n
84<\/td>\nNominal diameter (mm) Internal diameter (mm) Value of K
Table C.2c K values for copper tube conforming to BS EN 1057:2006+A1, half-hard, R250 designation
Table C.3a Typical equivalent lengths for steel fittings and valves <\/td>\n<\/tr>\n
85<\/td>\nTable C.3b Typical equivalent lengths for CPVC fittings and valves
Table C.3c Typical equivalent lengths for copper fittings and valves <\/td>\n<\/tr>\n
86<\/td>\nC.5 Maximum flow demand calculation <\/td>\n<\/tr>\n
88<\/td>\nAnnex F C (informative)
Example of system data label <\/td>\n<\/tr>\n
89<\/td>\nAnnex D (normative)
Pipework support <\/td>\n<\/tr>\n
90<\/td>\nAnnex E (informative)
Hydraulic test <\/td>\n<\/tr>\n
93<\/td>\nAnnex F (normative) <\/td>\n<\/tr>\n
94<\/td>\nBibliography
Standards publications
Other publications <\/td>\n<\/tr>\n
101<\/td>\nForeword <\/td>\n<\/tr>\n
105<\/td>\n0 Introduction
1 Scope <\/td>\n<\/tr>\n
106<\/td>\n2 Normative references <\/td>\n<\/tr>\n
107<\/td>\n3 Terms and definitions <\/td>\n<\/tr>\n
108<\/td>\nFigure 1 \u2014 Height of top storey in building <\/td>\n<\/tr>\n
111<\/td>\n4 Preliminary work and consultation
4.1 Initial considerations
4.2 Consultation <\/td>\n<\/tr>\n
114<\/td>\n4.3 Category of system <\/td>\n<\/tr>\n
115<\/td>\nTable 1 \u2014 Category of system
5 Design
5.1 General <\/td>\n<\/tr>\n
116<\/td>\n5.2 System type
5.3 Design density and duration of supply <\/td>\n<\/tr>\n
117<\/td>\nTable 2 \u2014 Minimum design parameters <\/td>\n<\/tr>\n
118<\/td>\n5.4 Extent of sprinkler protection
5.5 Classification of residential and non-residential occupancies <\/td>\n<\/tr>\n
119<\/td>\nTable 3 \u2014 Examples of classification of areas and design criteria for areas protected with \u201cResidential\u201d BS EN 12259\u201114 sprinkler heads <\/td>\n<\/tr>\n
120<\/td>\n5.6 Ordinary hazard protected areas <\/td>\n<\/tr>\n
121<\/td>\nTable 4 \u2014 Examples of classification of areas and design criteria for areas to be protected with BS EN 12259\u20111 sprinkler heads
5.7 Sprinkler coverage and positioning <\/td>\n<\/tr>\n
123<\/td>\nFigure 2 \u2014 Two examples of shadow areas (plan views)
Figure 3 \u2014 Bay windows and similar features <\/td>\n<\/tr>\n
124<\/td>\n5.8 Ceiling pockets
5.9 Residential pattern sprinkler heads <\/td>\n<\/tr>\n
125<\/td>\n5.10 Hydraulic calculations
5.11 Water supplies <\/td>\n<\/tr>\n
128<\/td>\nFigure 4 \u2014 Stored water supply <\/td>\n<\/tr>\n
130<\/td>\nFigure 5 \u2014 Examples of water volumes for various shared water supplies <\/td>\n<\/tr>\n
131<\/td>\nFigure 6 \u2014 Typical shared pump and water supply with PDV <\/td>\n<\/tr>\n
132<\/td>\n5.12 Pumps <\/td>\n<\/tr>\n
133<\/td>\nFigure 7 \u2014 Typical power supply arrangement to sprinkler pump and ancillary equipment <\/td>\n<\/tr>\n
136<\/td>\nFigure 8 \u2014 Enhanced water supply <\/td>\n<\/tr>\n
137<\/td>\nFigure 9 \u2014 Examples of primary and secondary power supply configurations
5.13 Pipes and fittings <\/td>\n<\/tr>\n
138<\/td>\n5.14 Flexible sprinkler connection <\/td>\n<\/tr>\n
139<\/td>\n5.15 Valves
5.16 Pressure reducing valves <\/td>\n<\/tr>\n
140<\/td>\n5.17 Frost protection
5.18 Sprinkler system fire and fault alarm functionality <\/td>\n<\/tr>\n
142<\/td>\nTable 5 \u2014 Fault conditions to be monitored in category 2, 3 and 4 systems <\/td>\n<\/tr>\n
143<\/td>\n6 Installation, commissioning and documentation
6.1 Installation <\/td>\n<\/tr>\n
145<\/td>\n6.2 Commissioning <\/td>\n<\/tr>\n
146<\/td>\n6.3 Documentation <\/td>\n<\/tr>\n
147<\/td>\n6.4 Block plan
6.5 System data label
6.6 Location plate <\/td>\n<\/tr>\n
148<\/td>\nFigure 10 \u2014 Example of a location plate
7 Maintenance
7.1 Inspecting and testing routines <\/td>\n<\/tr>\n
149<\/td>\n7.2 Reinstatement of the system
7.3 Log book <\/td>\n<\/tr>\n
150<\/td>\nAnnex A (informative)\u2002 Elements of a typical residential sprinkler system
Figure A.1 \u2014 Elements of a typical mains\u2011fed sprinkler system <\/td>\n<\/tr>\n
151<\/td>\nFigure A.2 \u2014 Elements of a typical pump and tank sprinkler system <\/td>\n<\/tr>\n
152<\/td>\nFigure A.3 \u2014 Typical arrangement of a multi-storey building with shared water supply and shared riser <\/td>\n<\/tr>\n
153<\/td>\nFigure A.4 \u2014 Typical arrangement of a multi-storey building with shared water supply and dedicated sprinkler riser <\/td>\n<\/tr>\n
154<\/td>\nAnnex B (normative)\u2002 Hydraulic calculations <\/td>\n<\/tr>\n
155<\/td>\nTable B.1 \u2014 C values for various type of pipes
Table B.2 \u2014 K values for carbon steel tube conforming to BS EN 10255, Medium series
Table B.3 \u2014 K values for CPVC conforming to ASTM F442
Table B.4 \u2014 K values for copper tube conforming to BS EN 1057:2006+A1, half\u2011hard, R250 designation <\/td>\n<\/tr>\n
156<\/td>\nTable B.5 \u2014 Typical equivalent lengths for steel fittings and valves <\/td>\n<\/tr>\n
157<\/td>\nTable B.6 \u2014 Typical equivalent lengths for CPVC fittings and valves
Table B.7 \u2014 Typical equivalent lengths for copper fittings and valves <\/td>\n<\/tr>\n
158<\/td>\nFigure B.1 \u2014 Example of a square law graduation graph <\/td>\n<\/tr>\n
159<\/td>\nFigure B.2 \u2014 Blank template of a square law graduation graph <\/td>\n<\/tr>\n
160<\/td>\nFigure B.3 \u2014 Example sprinkler head layout scheme <\/td>\n<\/tr>\n
161<\/td>\nTable B.8 \u2014 Example data extracted from a typical sprinkler head manufacturers datasheet
Table B.9 \u2014 Re-calculated parameters for BS 9251 application providing a minimum of 2.1 mm\/min as required for BS 9251 category 1 <\/td>\n<\/tr>\n
162<\/td>\nTable B.10 \u2014 Worked example: actual coverage areas <\/td>\n<\/tr>\n
163<\/td>\nAnnex C (informative)\u2002 Example of system data label
Figure C.1 \u2014 System data label <\/td>\n<\/tr>\n
164<\/td>\nAnnex D (normative)\u2002 Pipework support
Table D.1 \u2014 Maximum spacing of fixings for copper and stainless steel pipework
Table D.2 \u2014 Maximum spacing of fixings for steel pipework
Table D.3 \u2014 Maximum spacing of fixings for CPVC pipework <\/td>\n<\/tr>\n
165<\/td>\nAnnex E (informative)\u2002 Hydraulic test <\/td>\n<\/tr>\n
166<\/td>\nFigure E.1 \u2014 Test rig for hydraulic test
Annex F (normative)\u2002 Long-term inspection and testing of pipework and sprinklers <\/td>\n<\/tr>\n
167<\/td>\nTable F.1 \u2014 Number of sprinklers to be removed and tested <\/td>\n<\/tr>\n
168<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Tracked Changes. Fire sprinkler systems for domestic and residential occupancies. Code of practice<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2021<\/td>\n170<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":380379,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[238,2641],"product_tag":[],"class_list":{"0":"post-380370","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-13-220-20","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\/380370","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\/380379"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=380370"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=380370"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=380370"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}