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◆ EN 45545-3:2024 Upgrade the fire barrier
standard for rail vehicles
EN
45545-3:2024 Railway use-Railway vehicle fire prevention-Part 3-Fire resistance
requirements for fire barriers
◆ In the rail car,
you can often see the end wall (including the door) or the partition barrier
between the driver's cab and the passenger room.
It
divides the whole train into several areas. Once a fire occurs on the train, it
can effectively block the flame and its products from spreading to the
protected area, and provide relatively safe areas for passengers and crew
before evacuation to ensure the safety of passengers, so it can also be called
a "life-saving wall".graph 1
Fire
barriers prevent fire spread and gas penetration and provide a safe area before
passengers are evacuated. The EN 45545-3 specifies the requirements for vehicle
fire barriers. During the decade from the publication of the first edition in
2013 to 2023, technological development has been rapidly, and the EN 45545
series led by CEN / TC 256 has been continuously updated, in which EN 45545-3
was approved by CEN in October 2023, officially published in March 2024, and
all suitable for national and / or regional requirements before August 2024
into national standards, with conflicting standards must be scrapped. Nanjing Smart to take you to see the specific
differences between the old and new versions: Figure 2
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order
number
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EN
45545-3:2013
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EN
45545-3:2024
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explain
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clause
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Content
/ change
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clause
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Content
/ change
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1
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1
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scope
EN
45545-3 specifies the fire resistance requirements and test methods for
vehicle fire barriers
EN
45545-3 Requirements and Measures to protect the passengers and crew on board
when the vehicle is in a developing fire situation
Protection
for vehicles is not within the scope of this section
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1
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scope
Add:
Use of the FCCS system as an alternative fire barrier is not within the scope
of this standard
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2
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2
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Standard
reference
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2
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Standard
reference
All
reference standards specify the year number
The
ISO 834-1 was removed
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No
direct impact
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3
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5.1
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general
requirements
5.1.1
Introduction
5.1.2
Integrity E
5.1.3
Thermal Insulation I
5.1.4
Thermal radiation W
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5.1
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general
requirements
Cancel
all of 5.1.2-5.1.4
Change:
E / I / W according to the provisions of EN 13501-2:2016
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Compared
with the 2013 version, the criterion of not igniting cotton pad is
applicable, consistent with EN 1363-1
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4
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5.5
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ask
Closing
device on ventilation duct
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5.5
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ask
Closing
device on ventilation duct
For
the ventilation pipe through the fire partition plate, adding the extra pipe
itself does not need to meet the fire resistance
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5
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Table
1
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Including
the vehicle-bottom technical equipment cabinet with high-power electrical
equipment
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Table
1
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Add:
1) lithium battery containing traction and auxiliary power supply; 2)
exclude, in addition to the brake resistance, add the cable between the
heating resistance and the connection point
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……
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◆ Note that, in the
EN 45545-3:
For
non- (EU) 2016 / 797 vehicles, the cab rear wall I15 shall be replaced by W15.
The
lowest grade E, second grade EW, highest grade EI, as shown in the figure
below. graph 3
◆ About the integrity
performance assessment E:
Flame:
No constant flame on the backsurface.
Cotton
pad: the cotton pad shall not ignite when applicable, that is, the flame or no
flame combustion.
Gap
gauge: the 6mm diameter gauge shall not move 150mm or above along the gap after
passing through the sample, and the gauge of 25mm diameter shall not pass
through the sample into the test furnace.
◆ Regarding the
thermal insulation performance assessment I:
Average
temperature: The increase of the average temperature from the initial
temperature shall not exceed 140℃.
Maximum
temperature: The maximum temperature shall not exceed 180℃ from the initial
temperature.
◆Regarding the
thermal radiation performance assessment W:
The
highest level of thermal radiation measured at any point 1m from the backfire
surface does not exceed 15 k W/m2.
◆ Nanjing Smart | fire flame
retardant detection | component fire resistance performance detection
Track
vehicles: EN 45545-2, EN 45545-3, TB / T 3237, NFPA 130, TB 3138, NF F16-101,
BS 6853, DIN 5510-2, UIC 564-2,
reference
for https://www.fire-test.com/newsinfo/4260230.html
EN 45545-2:2020 +
A1:2023 standard what are the new regulations
reference for https://www.fire-test.com/newsinfo/6748549.html
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……
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