GB 50987-2014 English PDF (GB50987-2014)

Delivery: 3 seconds. Download true-PDF + Invoice.
Get QUOTATION in 1-minute: Click GB 50987-2014
Historical versions: GB 50987-2014
Preview True-PDF (Reload/Scroll if blank)

GB 50987-2014: Code for fire protection design of hydraulic engineering
GB 50987-2014
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
P GB 50987-2014
Code for fire protection design of
hydraulic engineering
ISSUED ON: DECEMBER 02, 2014
IMPLEMENTED ON: AUGUST 01, 2015
Issued by: Ministry of Housing and Urban-Rural Development of the
People's Republic of China;
General Administration of Quality Supervision, Inspection and
Quarantine.
Table of Contents
Announcement ... 5 
Foreword ... 6 
1 General provisions ... 8 
2 Terms ... 9 
3 Classification of production fire hazard and fire resistance rating ... 10 
4 General layout ... 13 
4.1 Fire separation distance ... 13 
4.2 Fire lanes and rescue facilities ... 14 
5 Building ... 16 
5.1 Fire compartment ... 16 
5.2 Safety evacuation ... 16 
6 Electrical equipment ... 19 
6.1 Outdoor electrical equipment ... 19 
6.2 Indoor electrical equipment ... 21 
6.3 Cable ... 21 
7 Insulating oil and turbine oil system ... 23 
8 Fire water supply and fire-extinguishing installation ... 24 
8.1 General requirement ... 24 
8.2 Water supply facilities ... 24 
8.3 Indoor, outdoor fire water supply ... 26 
8.4 Fire hydrant ... 27 
8.5 Automatic fire extinguishing system ... 28 
8.6 Fire fighting equipment ... 30 
9 Ventilation, heating, smoke control and exhaust ... 31 
9.1 Ventilation and heating ... 31 
9.2 Smoke control and exhaust ... 31 
10 Fire fighting electrical system ... 33 
10.1 Power supply for fire fighting ... 33 
10.2 Emergency lighting, evacuation sign ... 33 
10.3 Automatic fire alarm system ... 33 
10.4 Lightning and grounding ... 36 
Explanation of wording in the code ... 37 
List of quoted standards ... 38 
Code for fire protection design of
hydraulic engineering
1 General provisions
1.0.1 This Code was prepared in order to prevent fires in hydraulic engineering,
reduce fire hazards, and protect personal and property safety.
1.0.2 This Code is applicable to the fire protection design of large and medium-
sized hydropower plants, pumping stations, sluices and navigation facilities of
new construction, expansion and reconstruction of hydraulic engineering.
1.0.3 The fire protection design of hydraulic engineering shall proceed from the
overall situation and make overall considerations to ensure safety, application,
advanced technology and economic rationality.
1.0.4 In addition to complying with this Code, the fire protection design of
hydraulic engineering shall also comply with the relevant national standards.
2 Terms
2.0.1 ground plant (powerhouse or pump house)
a hydroelectric power plant or pumping station that the motor layer or the
installation floor can be directly connected to the external road, and the doors
and windows are directly connected to the atmosphere
2.0.2 plant within dam
a hydroelectric power plant or pumping station plant that is located in the cavity
of the retaining dam body
2.0.3 underground plant
a hydroelectric power plant or pumping station plant that is set up in
underground cavern
2.0.4 main plant
the general name for the installation of the hydro-generator unit or pump unit
and its auxiliary equipment, and the installation room for installation and
maintenance work
2.0.5 auxiliary plant
other electromechanical equipment rooms other than the main plant, as well as
work and living rooms for operation, maintenance, testing and management
2.0.6 multilayer auxiliary plant
auxiliary plant with two floors and above, of which the building height is less
than or equal to 24.0m
2.0.7 high-rise auxiliary plant
auxiliary plant with two floors and above, of which the building height is greater
than 24.0m
4 General layout
4.1 Fire separation distance
4.1.1 The fire separation distance between adjacent buildings in the hub
shall not be less than that specified in Table 4.1.1.
Table 4.1.1 -- Fire separation distance between adjacent buildings in the
hub (m)
Building type
Level IV, V building Off-site tank room
or open-
air tank
High-rise
auxiliary
plant
Office, living
building
Fire resistance level Fire resistance level
Level I, II Level III Level I, II Level III
Le
ve
l IV
, V
bu
ild
ing
Fir
e r
es
ist
an
ce
lev
el
Level I, II 10 12 12 13 10 12
Level III 12 14 15 15 12 14
Off-site tank room or open-air
tank 12 15 - 15 15 20
High-rise auxiliary plant 13 15 15 - 13 15
Of
fic
e,
liv
ing
bu
ild
ing
Fir
e r
es
ist
an
ce
lev
el
Level I, II 10 12 15 13 6 7
Level III 12 14 20 15 7 8
NOTES:
1 The fire separation distance shall be calculated according to the nearest distance of the adjacent
building's external wall. If the external wall has a protruding combustion member, it shall be
counted from the outer edge of its convex portion.
2 Two buildings shall be level IV, V buildings with level I, II fire resistance. When the adjacent lower
side external wall is a firewall and the fire resistance limit of the building roof is not less than 1h,
the fire separation distance shall not be less than 4.0m.
3 For two adjacent buildings, when the higher side is firewall, the fire separation distance is not
limited.
4.1.2 The fire separation distance between the outdoor main transformer
field and the building, the off-site tank room or the open-air tank shall not
be less than the requirements of Table 4.1.2.
5 Building
5.1 Fire compartment
5.1.1 The maximum allowable floor space for fire compartment of the main plant
and multilayer auxiliary plant is not limited.
5.1.2 The maximum allowable building area for each fire compartment of the
high-rise auxiliary plant shall not exceed 4000m2. The maximum allowable
building area for each fire compartment of underground auxiliary plant, auxiliary
plant within dam shall not exceed 2000m2.
5.1.3 When a level III production site is set within a factory building with level
IV fire hazard, it shall use non-combustible partition wall with a fire endurance
of not less than 2.00h and non-combustible floor slab with a fire resistance of
not less than 1.50h to separate it from other parts. The door shall be A1.50 fire-
proof door, equipped with corresponding firefighting facilities.
5.1.4 The fire compartment division of other buildings shall comply with the
provisions of current national standard GB 50016 “Code of Design on Building
Fire Protection and Prevention”.
5.2 Safety evacuation
5.2.1 Safety exits shall be decentralized. For each fire compartment, each floor
of one fire compartment, the horizontal distance between the nearest edges of
the two adjacent safety exits shall not be less than 5.0m.
5.2.2 The safety exits and evacuation walkways of hydropower plants and
pumping stations for hydraulic engineering shall comply with the following
provisions:
1 The generator floor or motor layer of the ground plant shall have no less than
2 safety exits that are directly connected to outdoor ground;
2 There shall be 2 safety exits in the generator floor or motor layer of the
underground plant and the plant within dam. And there is at least 1 that is
directly connected to outdoor ground. The incoming traffic tunnel can be used
as a safe exit to the outdoor ground;
3 The safety exit of the whole plant operation corridor below the generator floor
or motor l...