NES 0094 Test
NES 0094 Test
1. SCOPE
This Standard specifies the test method for flammability for automotive materials.
In addition, this Standard is in accordance with the laws and regulations of each country.
2. TEST EQUIPMENT
The test equipment shall meet the following criteria: However, equipment that does not meet the criteria
may be used if it is confirmed that the specifications allow testing under regulations of the relevant country.
(1) Test cabinet Refer to Figure. 1.
(2) Support stand for test piece clamp Refer to Figure. 2.
(3) Test piece clamp Refer to Figure. 3.
(4) Bunsen burner 9.5 mm inside diameter
Gas supplied to the Bunsen burner shall be, in principle, a natural
gas with a gross heating value of 35,000 to 38,000 kJ/m 3.
However, it is also allowable to use a liquefied petroleum gas (LP
gas) with a gross heating value equivalent to or higher than the
said gas.
(5) Stopwatch Accuracy: 0.5 seconds
(6) Ruler Accuracy: 0.1 mm
(7) Anemometer Accuracy: 2 decimal places
(8) Thermohygrometer
No. Description
1 Thermometer
1 2
12 2 Exhaust slit
3 3 Observation window (heat-resistant glass)
Support stand for test piece clamp, test
4 4
piece clamp "U" shaped
10
5 5 Test piece
9 6 Support stand for test piece clamp
6 7 Index plate
8
7 8 Bunsen burner
9 Flame height gauge
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10 Door with attached burner
16 11 Test piece entrance/exit door
14 13 12 Cover plate
13 Vent leg
Figure 1 Test cabinet 14 Air inlet opening
(Reference) Material: 15 Baffle plate (removable)
Stainless steel 16 Stand
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(1)
(12) (1) (2)
(9)
(4) (5) (7) (3) (7) (9)
(10) (8)
(8) (6) (8)
(16)
(15) (15)
(13)
Section a a' Section b b'
(Front view of section a-a') (Front view of section b-b')
Unit: mm
(14) (13)
(11)
(8) (10)
(Bottom view)
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Unit: mm
Marked line A
Marked line B
Unit: mm
confirmation line
100
point
point
38 50
350
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Note (1) Range of depth from the surface of the vehicle interior of the target product
Destination country Depth range
Japan 12 mm
Other than Japan 13 mm
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Specimen (2)
Completely bonded Cut
(C)
(A) and (B) are separable. (B) and (C) are non-separable.
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Flame top
8. REGULAR TEST
(1) The conditioned test piece, with the surface that is exposed to the automobile's interior facing down, is secured
between the two test piece clamps with open side ends aligned and mounted on the test piece support stand. It is
then placed on the support stand inside the test cabinet. Confirm the test piece positioned is as described in Item
7.1(1).
1) In cases where a test piece cannot maintain a horizontal position while burning, or when it is small, fuzzy or
gridded, the following procedures are recommended.
[1] For a test piece whose end is softened or deformed by heat, preventing it from being burned in the horizontal
position, attach fine heat-resistant wires at 25 mm intervals across the width of the test piece clamp. This will
support the test piece and maintain a horizontal burning position. For the following materials, use a clamp with
wires for the test if the heat of combustion causes the test piece to sag and the burn rate of horizontal
combustion cannot be measured.
Table 1 Materials which may sag and examples of their application
Material Example of application
Rubber Various insulator, etc.
Urethane Seat, sun visor, etc.
Fabric (single or composite) Seat, sun visor, etc.
PVC covering Seat, sun visor, etc.
Carpet Floor carpet, luggage carpet, etc.
Felt (single) Roof insulator, etc.
[2] A test piece that cannot be held with the test piece clamp shall be supported by the clamp with wires described
above.
[3] For a test piece with fuzzy surface, fluff twice with a comb having rounded tip teeth spaced 7 or 8 teeth per 25
mm.
[4] For a test piece with gridded shape like speaker grill which is made of uniform material, if the grid is less than
293 mm, carry out the flammbility test from the end of the test piece (non-gridded part). If the grid is 294 mm or
more, carry out the flammbility test only at the gridded part.
2) If it is anticipated that flammability will differ with the operating procedures, such as clamping of the test piece and
flame approach speed, preliminary tests shall be conducted. Conditions where burning occurs most easily shall be
selected for the test.
(2) Ignite the Bunsen burner and close the door with burner carefully so that flame will not flicker. Apply flame to the
piece for 15 seconds and then extinguish the Bunsen burner.
(3) When the test piece starts to burn and as soon as the flame reaches the marked first measuring point, start time
measurement with a stopwatch. End the measurement as soon as the flame passes the marked the last measuring
point. If the flame extinguishes before reaching the marked the last measuring point, measure the distance and
time from the marked first measuring point to the leading burned edge. Definition of burning and the position of
measurement are shown in Reference Figure 1. Also, when the burning speed differs between the top and the
bottom surfaces, the higher burning speed shall be taken by visual observation.
If the flame edge is not visible due to smoking, place strings at the upper and lower surfaces of the test piece as
shown in Reference Figure 2. Passing of flame is determined when one string is cut earlier than the other. Strings
shall be cotton string #50 (JIS L 2101 Cotton sewing thread) or equivalent.
(4) If burning does not reach marked line B after 5 minutes, the test can be completed by measuring duration and
distance at that point.
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(5) The burn rate can be obtained using the following formula:
D
B 60
T
where, B: Burn rate (mm/min)
D: Burn distance (mm)
T: Burn time (sec)
Remark 1: During inspection of the specimen, flames propagating along surface tufts shall not be regarded
as combustion.
9. REPORT
(1) If the flame goes out spontaneously within 50 mm after it passes the first measuring point and the
elapsed time is less than 60 seconds, the burn rate shall be indicated as SE (1). Burning time, burning
distance, max./min. values of temperature and humidity of the test piece conditioning, conditioning time
of the test piece, and max./min. values of temperature and humidity in the combustion room must be
recorded.
(2) In cases when the test piece is not ignited or the flame terminates spontaneously before reaching the
marked first measuring point, the burn rate shall be indicated as 0.
(3) For test pieces showing flammability other than those described in (1) and (2) above, the burn rate shall
be indicated. The value shall be counted fractions of 0.1 and over as a unit and cut away 0.0 and shall
become an integer. (The two decimal places are not calculated.)
Example: 19.1 20 20.0 20
(4) From these speed values (burn rate), calculate the value of average +3 . This value shall be used as
measurement.
n
( x i x)2
i1
σ
n 1
where
[1] When all burnings are (3):
Calculate the value of average +3 from all burn rates.
[2] In n = 5 data one or two values are (1) or (2) and remaining values are (3):
Calculate the value of average +3 from burn rates except (1) and (2).
[3] In n = 5 data 3 values or more are (1) or (2) and remaining values are (3):
The maximum value of burn rate shall be determined as burn rate value.
Note (1): SE is an abbreviation for "Self Extinguish".
10. REQUIREMENT
10.1 When measurements are average +3 (for [1] and [2] in 9. (4))
When measurements (average +3 value calculated in 9) meet the following standards in Table 2-1,
they are deemed to satisfy the flammability test requirements of each applicable country.
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(3) Thailand
- The target models are M2 and M3.
- Comply with one of the following standards.*1
1. UN-R118-02 (or the latest series)
2. FMVSS302
3. ISO5658-2
4. Other standards approved by DLT
- Submit a test report issued by a test agency that complies with ISO/IEC 17025 or TIS 17025, or a test
agency approved by DTL*2.
*1: Since NES M0094 complies with FMVSS302, other evaluation is not required.
*2: Examples of DLT-approved test agencies: Chulalongkorn Laboratory, Thailand Automotive Institute (TAI), National Metal & Materials Technology Center (MTEC), Thailand
Textile Institute
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Table 3 Rules for test piece photos before and after test
No. Rules
1 The test piece shall be placed on 1 cm square graph paper with the lower end aligned with the grid line.
2 The color of the graph paper shall the one that allows the test piece to be recognizable.
3 The test pieces shall be arranged in order of test number at intervals and captured in 1 photo.
4 The photo shall be taken from directly above the test pieces.
5 Light used for photographing shall be cast from directly above to eliminate shadows as much as possible.
6 The photo taken shall not be scaled vertically or horizontally.
The paper sheet with the test date and other information shall be placed on the upper side of the test
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pieces.
8 The test piece number shall be clearly written directly on the test piece or on the paper sheet.
1 2 3 4 5
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Items at reporting
1. NES classification 1 to 12
2. Application class in Japan 1 to 23
*Applicability to Safety Standards in Japan (O or ×)
Product dimensions: Any product less than 293 mm in length or 25 mm in width shall fall under "×".
25 mm Not 25 mm
applicable Not applicable
293 mm 293 mm
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Dropping: Measure the distance of most deeply Melting: Measure the melted distance up to the front edge
intruded section. of melting tip.
(Front edge is designated since precise border
point of melting is hardly judged.)
(Example) (Example)
Reference Figure 2
(5) (6) (7) (2) (5) (7) (2)
(8) (8)
(1) (10) (1)
(4)
(4) (3)
(3)
(9) (9)
View A
(8) (1) (10) Enlarged View A (8) (1)
(1)
(5) (3) (7) (2) (8) (5) (3) (7) (2)
(10)
(9) (9)
(2)
(7)
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Car
Material Part
Material component Color
Dimension(mm) Wire
Testing
TESTING Date : Location : :
person
Direction Length Width
Temperature(℃) Humidity(%) Air Velocity (m/s) Temperature(℃) Humidity(%) Air Velocity (m/s)
Test Atmosphere MAX MIN MAX MIN in the Rear MAX MIN MAX MIN in the Rear
Judgement Ave.+3σ<100mm/min OK ・ NG
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1 2 3 2* 4 5 6 7 8 9 10 11 12 13
Material
Test piece
formation
12 23 Applicability to Color
22 classifications Part name Part number Area Composition Material used Material supplier Material grade Test piece single
classifications classifications Japan number
of application for
application for of application Safety
GCC or or
FMVSS in Japan Standard
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
Burn distance (mm) Burn time (sec) Burn rate (mm/min) NES M0094 Test dimension (mm)
254 254 254 254 F 200 210 220 200 F 77 73 70 77 F 85 77 OK_SI 350 100 5
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52
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Table 6 Checklist
Confirmation
Item to report Check item
column
Standard of There is a standard of work processing related to flammability test.
work
processing It is clearly described the process from the formulation of the test plan to the issuance of the test report.
It is clearly described the department in charge of each process and its role.
It is managed and stored as a document that has been reviewed and approved.
Test procedure There is a test procedure related to flammability test.
It is created in reference to NES M0094.
It is managed and stored as a document that has been reviewed and approved.
The test condition satisfies the following items
Temperature and humidity
Temperature 20 ± 5°C, humidity 55 ± 5%
in test laboratory
Condition adjustment of test Temperature 23 ± 2°C, humidity 50 ± 5%, 24 to 168 hr
pieces (Measured by automatic recording device, etc.)
Place the gas burner in the central part of the burn test equipment so
Flame position that the center of the burner tube is 19 mm below the center of the free
end of the test piece.
Adjust the gas adjustment valve so that the flame height is about 38
Flame height
mm with the burner tube in the vertical state.
Flame contact time The test piece shall be exposed to flame for at least 15 seconds.
References:
JIS D 1201 Road vehicles, and tractors and machinery for agriculture and forestry -- Determination of
burning behavior of interior materials
Federal Motor Vehicle Safety Standard No. 302
Canadian Motor Vehicle Safety Standard No. 302
RENAULT NISSAN ENGINEERING STANDARD (RNES) RNES-B-00071
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