1. Korea Research Results “Fire resistance test”
Korea Transportation Safety Authority 1
정 혁 책임연구원
Korea Automobile Testing and Research Institute(KATRI)
200 Samjon-Ro, Songsan-Myun, Hwasung-Si, Gyeonggi-Do, 18247
Mar. 2, 2016
Seulki Lee / Senior Researcher
UN ECE / WP29 / GRSP/ 10th EVS Informal Meeting in Japan
(6th TFG-7 F2F Meeting)
EVS TF-07-29e
Korea Research Results
“Fire resistance test”

2. Contents 1 2 3 4 5 Open issues of TF-7 Test method Test configurations
Test result 4
Conclusion 5

3. 1. Open issues of TF-7 Open issues
TF7 will find the solution for the equivalency of two short duration fire resistance test. All members are asked to submit their opinion to TF7 (Action Item #10)
Canada and US will come up with draft proposal for adding additional criteria for short duration fire resistance test (Action Item #11)
☞ Canada Presentation
China will provide technical data or justification for small buses to TF7 (Action Item #12)
☞ China Presentation
1/10

4. 2. Test Method
Comparison between Gasoline pool fire and LPG burner fire by measuring heat flux
Change mass flow rate of LPG to find equivalency of heat flux with Gasoline pool fire
Test
Condition
Procedure
Data output
Heat flux test
Gasoline
Pool Fire
Free Burning
Phase A(Pre-heating 60sec), B(direct exposure 70sec), C(indirect exposure 60sec)
Heat flux,
Flame Temp.
(5 points)
LPG
Burner Fire
Direct exposure 60sec continuously at various mass flow rate(175, 200, 225, 250, 275, 300 kg/h)
to find equivalent heat flux with Gasoline pool fire
Verifica-tion test
With mockup
Test according to UN R100 with mock up.
Phase A(Pre-heating 60sec), B(direct exposure 70sec),
C(indirect exposure 60sec)
Test according to KMVSS with mock up, applying mass flow rate determined by heat flux test.
Direct exposure : time to reach 800℃ (less than 30 sec),
120 sec at 800~1100℃
2/10

5. 3. Test configurations LPG Burner
Range of LPG mass flow rate : Max. 400kg/h
- Ratio-control system of flow rate installed.
- Nozzle hole diameter : Φ 2.4 mm
Φ 2.3 mm → Φ 2.4 mm hole enlarged.
Gasoline Pool
Size : 1,100 × 750 × 130 mm(0.825㎡)
Mockup
Size : 888 × 540 × 210 mm, STS 3.2t
Heat Flux Meter
Medtherm, Gardon Gage
Window 60° VA
Max. 100 kW/m2
Test configurations
3/10

6. 4. Test result Heat flux & flame temp. Test condition Free burning
Heat flux & flame temperature measured continuously
- LPG burner : LPG mass flow rate 175, 200, 225, 250, 275 kg/h, each 60sec.
- Gasoline pool : UN R100 Phase A, B, C
LPG burner Heat flux measuring point be decided by FTP code Ⅰ1)
770mm
455mm
890 mm
1240 mm
4/10

7. 4. Test result
Gasoline pool Heat flux measuring point be decided by FTP code Ⅰ
770mm
890 mm
610mm
790 mm
Flame temp. measuring : 5 points
- LPG Burner
Gasoline pool
5/10

8. 4. Test result LPG Gasoline
☞ 1) Reference : FTP code Ⅰ-Annex 1(Appendix 1)
Thermal radiation test supplement to fire resistance tests for windows in "A", "B" and " F class divisions
Test scene
LPG
<175 kg/h> <200 kg/h> <225 kg/h> <250 kg/h> <275 kg/h> <300 kg/h>
Gasoline
Gasoline
<Direct> <Indirect>
LPG
<Direct> <Indirect> <175 kg/h> <200 kg/h> <225 kg/h> <250 kg/h> <275 kg/h> <300 kg/h>
6/10

9. 4. Test result Test result Gasoline pool fire : UN R.100 Phase A, B, C
LPG burner fire : LPG mass flow rate 175, 200, 225, 250, 275 kg/h, each 60sec. ℃ ℃
kW/㎡
kW/㎡
Mass flow rate
175
200
225
250
275
(Kg/h) s s
7/10

10. 4. Test result Test result Comparison of Heat flux s
175
200
225
250
275 (kg/h) s
Heat flux of Gasoline : 25~50 kW/m2, LPG : 30~40 kW/m2
Integral Heat Flux
- Integrate heat flux of Gasoline pool during 130s(phase B + C)
- Integrate heat flux of LPG at each mass flow rate during 120s + α(time to reach 800℃)
- LPG burner’s integral heat flux at 200 kg/h similar with Gasoline
Fuel
Integral Heat flux
Fuel (Mass flow rate)
Gasoline
4,460
LPG (175kg/h)
4,181
LPG (200kg/h)
4,450
LPG (225kg/h)
4,945
8/10

11. 4. Test result Consideration
Heat flux : ?
Flame Temp. : Low(Uneven)
- 650 ~850 ℃
Gasoline
- Gasoline pool fire
Heat flux meter
Heat flux : High
(Uneven)
Heat flux : ?
Flame Temp. : High(Const.)
- 200 kg/h : 850 ~950 ℃
- 175 kg/h : 800~900 ℃
LPG- 200 kg/h
- LPG burner fire
Heat flux : Low
(Const.)
LPG- 175 kg/h
- If applying 200 kg/h in LPG, inside temp.(damage to DUT)
should be much higher than in Gasoline pool fire.
9/10

12. 4. Conclusion
To compare HEAT FLUX of Gasoline pool fire vs LPG burner fire
- Set up heat flux meter and mass flow rate controller additionally
- Increase mass flow rate from 175 kg/h to 300 kg/h
Heat flux of Gasoline pool fire shows around 25~50 kW/m2, and
heat flux of LPG burner shows constant 30~40 kW/m2 value at each mass flow rate.
As mass flow rate is increased, heat flux is increased almost proportionally.
To determine representative value of heat flux, integrated heat flux at each time.
We could find it equivalency Gasoline pool fire and LPG burner at 200 kg/h
of mass flow rate
In verification test LPG burner at 200 kg/h with mockup,
temperature was 850~950℃ which is much higher than Gasoline pool fire.
In consideration of characteristic of Heat flux meter and test condition of
temperature in KMVSS, we can say that 175kg/h is suitable as shown in
[EVSTF-03-28e]
10/10

13. Thank you for attention!
Q & A