Regulation No. 129-00 Proposed Supplement 5

Name:Regulation No. 129-00 Proposed Supplement 5
Description:Approval of Enhanced Child Restraint Systems (ECRS). Proposed Supplement 5 to the 00 Series.
Official Title:Proposal for Supplement 5 to the 00 Series of Amendments to Regulation No.129 (Enhanced Child Restraint Systems (ECRS)).
Country:ECE - United Nations
Date of Issue:2016-09-02
Amendment Level:Original
Number of Pages:9
Vehicle Types:Bus, Car, Component
Subject Categories:Drafts and Proposals (Historical)
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Keywords:

specimen, material, test, restraint, child, flame, materials, paragraph, point, annex, u-shaped, tested, read, frame, device, end, composite, systems, air, surface, space, burner, tests, compartment, regulation, amend, system, occupant, cabinet, requirements, position, method, load, figure, acceleration, rate, deceleration, confirming, held, thickness, validity, declaration, service, technical, discretion, carried, gas, trolley, flammability, maximum

Text Extract:

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ECE/TRANS/WP.29/2016/105
PROPOSAL FOR SUPPLEMENT 5 TO THE ORIGINAL SERIES OF
AMENDMENTS TO
REGULATION NO. 129
(ENHANCED CHILD RESTRAINT SYSTEMS (ECRS))
ADOPTED AT THE 170 SESSION – NOVEMBER 2016
PROVISIONAL DATE OF ENTRY INTO FORCE: JUNE 22, 2017

Method 2
The applicant shall declare in writing that when testing materials in accordance with
Annex 23 of this Regulation, the materials used shall not burn, nor transmit a flame front
across its surface, at a rate of more than 100mm/min. Each material used in a child
restraint system shall conform to these requirements. However, the requirement
concerning transmission of a flame front shall not apply to a surface created by cutting a
test specimen for purposes of testing pursuant to Annex 23.
The requirements shall be met in both the "in-use" and in the "stowed" positions of the
built-in Child Restraint System.
If a material stops burning before it has burned for 60s from the start of timing, and has
not burned more than 51mm from the point where the timing was started, it shall be
considered to meet the burn-rate requirement specified above.
Tests confirming the validity of the declaration may be carried out at the discretion of the
Technical Service."
Paragraph 6.6.3.1., amend to read:
"6.6.3.1. The Enhanced Child Restraint System shall be tested as prescribed in Paragraph 7.1.2.
of this Regulation; at no point during the whole test shall the manikin be fully ejected
from the device. In addition when the test bench is in the upside down position, the
dummy’s head shall not move more than 300mm from its original position in a vertical
direction relative to the test bench; this measurement shall be performed after the load
has been removed."
Paragraph 7.1.2.3., amend to read:
"7.1.2.3. At this static inverted position a mass equivalent to four times that of the dummy, with a
tolerance of -0/+5% with reference to dummies nominal masses as in Annex 8, shall be
applied vertically downwards in a plane perpendicular to the axis of rotation in addition to
the dummy utilizing the load application device described in Annex 21. The load shall be
applied in a gradual controlled manner at a rate not exceeding gravitational acceleration
or 400mm/min. Maintain the prescribed maximum load for a duration of 30 -0/+5s."

Paragraph 8.1., amend to read:
"8.1. The test report shall record the results of all tests and measurements including the
following test data:
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
The type of device used for the test (acceleration or deceleration device);
The total velocity change;
The trolley speed immediately before impact only for deceleration sleds;
The acceleration or deceleration curve during all the velocity change of the trolley
and at least 300ms;
The time (in ms) when the head of the manikin reaches its maximum displacement
during the performance of the dynamic test;
The place occupied by the buckle during the tests, if it can be varied, and
The name and address of the laboratory where tests have been performed;
And any failure or breakage;
The following dummy criteria: HPC, Head acceleration Cum3ms, Upper neck
tension force, Upper neck moment, Chest acceleration Cum3ms Chest deflection
Abdominal Pressure (in frontal impact)."

Insert a new Annex 23, to read:
1. DEFINITIONS
"ANNEX 23
FLAMMABILITY OF MATERIALS INTENDED TO BE
USED IN BUILT-IN CHILD RESTRAINT SYSTEMS
"Occupant compartment air space" means the space within the occupant compartment
that normally contains refreshable air.
2. MATERIAL SELECTION (see Figure 1 below)
2.1. Any portion of a single or composite material which is within 13mm of the occupant
compartment air space shall meet the requirements in Paragraph 6.1.6.
2.1.1. Any material that does not adhere to other material(s) at every point of contact shall meet the
requirements of Paragraph 6.1.6.when tested separately.
2.1.2. Any material that adheres to other materials at every point of contact shall meet the
requirements of Paragraph 6.1.6. when tested as a composite with the other material(s).
Material A has a non-adhering interface with Material B and is tested separately.
Part of material B is within 13mm of the occupant compartment air space, and Materials B
and C adhere at every point of contact; therefore, B and C are tested as a composite.
The cut is in Material C as shown in Figure 1, to make a specimen 13mm thick.
Figure 1

5. TEST
5.1. Mount the specimen so that both sides and one end are held by the U-shaped frame, and
specimen is not more than 51mm, so that the sides of the specimen cannot be held in the
U-shaped frame, place the specimen in position on wire supports as described in 2.3, with
one end held by the closed end of the U-shaped frame.
5.2. Place the mounted specimen in a horizontal position, in the center of the cabinet.
5.3. With the flame adjusted according to 2.4, position the bunsen burner and specimen so that
the center of the burner tip is 19mm below the center of the bottom edge of the open end of
the specimen.
5.4. Expose the specimen to the flame for 15s.
5.5. Begin timing (without reference to the period of application of the burner flame) when the
flame from the burning specimen reaches a Point 38 mm from the open end of the specimen.
5.6. Measure the time that it takes the flame to progress to a Point 38mm from the clamped end of
the specimen. If the flame does not reach the specified end point, time its progress to the
point where flaming stops.
5.7. Calculate the burn rate from the formula:
B = 60 × (D/T)
Where:
B = Burn rate in millimeters per minute
D = Length the flame travels in millimeters, and
T = Time in seconds for the flame to travel D millimeters.
Figure 2
All dimensions in millimeters (mm)
Approval of Enhanced Child Restraint Systems (ECRS). Proposed Supplement 5 to the 00 Series.