Transcript OSU & NBS March Materials Meeting Federal Aviation Administration

OSU & NBS
March Materials Meeting
Materials Working Group
Michael Burns, FAA Tech Center
June 17th & 18th, 2008
Federal Aviation
Administration
Agenda
• Present results of mini round robin
• Any progress to inspection of equipment?
• NBS furnace update
• Photometric System Round Robin
• Next steps
Materials Meeting - NBS Smoke Chamber / OSU
June 17th & 18th, 2008
Federal Aviation
Administration
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2007 Independent Mini-Study
• The follow-on ‘Mini-Study’ has been completed
• Review included an on site visit as well as the testing of two
honeycomb panels identified as 7800 and S-SCCP for the OSU
and 7700, 7800 for the NBS
• Data presented are tests made prior to repairing any
discrepancies that were found during visit
– One Lab was able to complete repairs and run panel S-SCCP (OSU)
a second time
• OSU data is presented as Peak Heat Release Rate, 2 minute
Total Heat Release Rate, Time to Peak and a one standard
deviation bracket
• NBS data is presented as maximum optical density observed
during the four minute test and a one standard deviation
bracket
Materials Meeting - NBS Smoke Chamber / OSU
June 17th & 18th, 2008
Federal Aviation
Administration
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3
7800 Panel - PEAK HR
AVG 79, %STDEV 11.1%
100.0
90.0
80.0
70.0
W/cm2
60.0
50.0
40.0
30.0
20.0
10.0
0.0
R
W
O
BB
A
L
Lab Code
Materials Meeting - NBS Smoke Chamber / OSU
June 17th & 18th, 2008
Federal Aviation
Administration
4
4
7800 Panel - TOTAL HRR
AVG 90, %STDEV 12.9%
120
100
W/cm2
80
60
40
20
0
O
R
BB
W
A
L
Lab Code
Materials Meeting - NBS Smoke Chamber / OSU
June 17th & 18th, 2008
Federal Aviation
Administration
5
5
7800 Panel - TIME TO PEAK
AVG 41, %STDEV 18.6%
60
50
Seconds
40
30
20
10
0
W
A
O
R
BB
L
Lab Code
Materials Meeting - NBS Smoke Chamber / OSU
June 17th & 18th, 2008
Federal Aviation
Administration
6
6
S-SSCP Panel - PEAK HR
AVG 50, %STDEV 13.8%
70.0
60.0
50.0
W/cm2
40.0
30.0
20.0
10.0
0.0
R
W
O
A
BB
Lab R After
Repairs
L
Lab Code
Materials Meeting - NBS Smoke Chamber / OSU
June 17th & 18th, 2008
Federal Aviation
Administration
7
7
S-SSCP Panel - TOTAL HRR
AVG 34, %STDEV 22.6%
50.0
45.0
40.0
35.0
W/cm2
30.0
25.0
20.0
15.0
10.0
5.0
0.0
R
O
BB
Lab R After
Repairs
A
L
W
Lab Code
Materials Meeting - NBS Smoke Chamber / OSU
June 17th & 18th, 2008
Federal Aviation
Administration
8
8
S-SSCP Panel - TIME TO PEAK
AVG 55, %STDEV 28.0%
90
80
70
Seconds
60
50
40
30
20
10
0
A
W
O
Lab R After
Repairs
L
BB
R
Lab Code
Materials Meeting - NBS Smoke Chamber / OSU
June 17th & 18th, 2008
Federal Aviation
Administration
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9
NBS Test Results
Materials Meeting - NBS Smoke Chamber / OSU
June 17th & 18th, 2008
Federal Aviation
Administration
10
10
Sample 7700 Ds Max during 4 minutes
Avg 114, % STD 16.8
160
140
120
Ds
100
80
60
40
20
0
L
W
R
A
Lab Codes
Materials Meeting - NBS Smoke Chamber / OSU
June 17th & 18th, 2008
Federal Aviation
Administration
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11
Sample 7800 Ds Max during 4 minutes
Avg 221, % STD 6.0
245
240
235
230
225
Ds
220
215
210
205
200
195
190
R
L
O
W
A
Lab Codes
Materials Meeting - NBS Smoke Chamber / OSU
June 17th & 18th, 2008
Federal Aviation
Administration
12
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Following Mini Study, FAA Requested All
Participating Labs to:
• Review mini-study findings posted on the FAA Fire
Safety web site
– Do you have similar problems (OSU & NBS)?
• Conduct thorough internal review of equipment and
procedures
• Review must address the following issues:
– List discrepancies found during inspection
– Course of action
– Estimated completion date for all necessary repairs
• Notify FAA once review is complete
Materials Meeting - NBS Smoke Chamber / OSU
June 17th & 18th, 2008
Federal Aviation
Administration
13
13
NBS Furnace
• FAA has been informed that any
manufacturing defect previously noted has
been corrected and that there is no longer a
dark eye observed in the center of the
furnace
• Updated furnace drawing specifications are
nearly complete and will be in the next
update of Chapter 6.
• FAA is working with manufacturers of the
NBS furnace elements to research better
materials that can be used for longer
service life
Materials Meeting - NBS Smoke Chamber / OSU
June 17th & 18th, 2008
Federal Aviation
Administration
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14
NBS Photometric System Round Robin
• FAA is currently conducting a round robin
check out of the NBS Photometric system
using neutral density light filters
• These filters provide a linearity check of five
data points
Materials Meeting - NBS Smoke Chamber / OSU
June 17th & 18th, 2008
Federal Aviation
Administration
15
15
NBS Photometric System Round Robin
• Tests are conducted without furnace heat or pilot
burner operation
• After zeroing then spanning the system, optical
density readings are obtained by gradually sliding
the filter over the lower glass panel in the chamber
• Information on the light filters can be found on the
following web site through Edmund Optics
– http://www.edmundoptics.com/onlinecatalog/DisplayProduct.cf
m?productid=1523
• Please contact me if your Lab would like to
participate
Materials Meeting - NBS Smoke Chamber / OSU
June 17th & 18th, 2008
Federal Aviation
Administration
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Next Steps
• FAA is in the process of updating Chapter 6
of the FAA Handbook (NBS)
– Main focus will address such issues as furnace
specification, Heat flux gage/Radiometer use and
photometric system
– Comments on Chapter 6 will be accepted through
8/1/2008
– Chapter 5 (OSU) to follow
• FAA Contact Information:
Michael Burns @ [email protected]
– +1 (609) 485-4985
Materials Meeting - NBS Smoke Chamber / OSU
June 17th & 18th, 2008
Federal Aviation
Administration
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QUESTION & ANSWER
ANY QUESTIONS, COMMENTS OR
SUGGESTIONS?
Materials Meeting - NBS Smoke Chamber / OSU
June 17th & 18th, 2008
Federal Aviation
Administration
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