Document 2Rxp14aKaz8r6Ee7xzJzdj79R
December 22, 1992
Rodney Bordelon
Building 4601
cc: Terry Vavasseur
Methanes Building 4601
Doyle Haney
Methanes Building 4601
Bruce Miles
Methanes Building 4601
Lionel London Methanes Building 4601
On December 22, 1992, the fume hoods in the Methanes Plant, Building 4601 were checked for face velocity. The Alnor Model 8925 Thermo Anemometer was used to take the face velocity measurements. These hoods have a(n) "A" classification because of the work being performed in them and/or the chemicals stored in the hoods. These hoods were checked at a(n) 18** or 14" sash opening.
Fume hood #2 is restricted for use at a 14" sash opening.
I would like to commend Terry Vavasseur for doing a fantastic job of keeping the lab in good working condition. He has instituted many helpful techniques and recommendations that have improved the ventilation systems in the lab. Great job!
The Recommendation(S), Observation(S), and Testing Data Sheet(S) are attached to this evaluation report.
The Ventilation Inventory (Appendix A), The Criteria For Hood Classification (Appendix B page 3), The Weekly Check Of Flow Measuring Device (Appendix C), and The Annual Fume Hood System Maintenance Sheet (Appendix D) are found in the Industrial Hygiene Plant Manual in Section 10-Ventilation.
Please respond in writing to Industrial Hygiene within one month as to action taken or planned in regard to these recommendations.
Please feel free to contact me with any questions.
Thank you.
Darlene S. Creel 3502-W Industrial Hygiene
DONFTDFNTT Al DO 008219
Page 6
LOUISIANA DIVISION INDUSTRIAL HYOIKNF. HOOD PERFORMANCE TESTING DATA
PLANT:
Methanes Building 4601
HOOD I.D.: Loading Rack Hood
DATE: 'November 25, 1991 TESTED BY: Darlene Creel
Static Pressure Reading
.30
TSI INSTRUMENTATION.
Hood Face Velocity Readings at a(n) 17" (because of mechanical stop in place) Sash Opening.
1182 179 I1
16
1160 155 jl
i6t>
1171 157 1
L3*l 165
160
itt>
165
1561 1
m
1601 1
(*
1581 1
Smoke Tube Observations with a(n) 17" (because mechanical stop in place) Sash Opening:
****GOOD (Air capture by hood is strong and well defined with minimal internal turbulence, and no observable smoke swirling back to hood face when person stands at hood face.)
Desi ^nation
(FPM)
Sash Hood Opening
FV
Loading Rack Hood
17"
164
(FPM) FVm _
155
Classification "A"
Used the Alnor Model 8925 Thermo Anemometer.
FV = Average Face Velocity FVm = Minimum Measurement FPM = Feet Per Minute
CONFTDFNTTAI DO 00Q2P0
Page 5
LOUISIANA DIVISION INDUSTRIAL HYGIENE HOOD PERFORMANCE TESTING DATA
PLANT:
Methanes Building 4601
HOOD I D.: Lab Hood #3
DATE: December 22, 1992 TESTED BY: Darlene Creel
Static Pressure Reading
Smoke Tube Observations With a(n) 18" Sash Opening -
MODERATE (Air capture by hood is positive but with some internal turbulence observed approaching the hood face. No smoke escaping the hood.)
(FPM) (FPM)
rDesignation Sash HofxiNOoenine
Lab Hood #3
Ll 8"
FV^^
FVm
no
Classification "A"
Used the Alnor Model 8925 Thermo Anemometer.
FV = Average Face Velocity FVm = Minimum Measurement FPM = Feet Per Minute
conftdfnttai.
DO 008221
Page 3
LOUISIANA DIVISION INDUSTRIAL HYGIENE HOOD PERFORMANCE TESTING DATA
PLANT:
Methanes Building 4601
HOOD I D.: Lab Hood #1
g - p-l
DATE: December 22; +992--" TESTED BY::PPaarrfeiepaeeCi rreeeelj___ _
n
Static Pressure Reading 0.55.
7
(p (J
Hood Face Velocity Readings at a(n) 1|T Sash Opening.
Smoke Tube
** """MODERATE (Air capture by hood is positive but with some internal turbulence observed approaching the hood face. No smoke escaping the hood.)
(FPM) (FPM)
Designation Sash Hood Opening FV__________ FVm
Lab Hood #1
18"
158 131
Used the Alnor Model 8925 Thermo Anemometer.
FV = Average Face Velocity FVm - Minimum Measurement FPM = Feet Per Minute
Classification "A" CONFtOFNTTAL DO 000222
Qm C-
Page 2
Observations: The laboratory hood designation, the average face velocity (FV) and minimum measurements (FVm) reported in feet per minute (FPM), and its rated classification is as follows:
Designation__________Sash Hood Opening
Lab Hood #1
18"
Static Pressure 0.55.
Smoke Observation MODERATE.
(FPM) (FPM) FV__________ FVm 158 131
Classification "A"
Lab Hood #2
14"
Static Pressure 0.35,
Smoke Observation GOOD.
146 113
"A'.'
Lab Hood #3
18"
Static Pressure 0.45.
Smoke Observation MODERATE.
150
110
"A"
Load Rack Hood
18"
Static Pressure 0.35.
Smoke Observation GOOD.
184 173
"A"
Recommendations:
1. Lab Hood #2 is restricted at a 14" sash opening.
2. The hood(s) should be placed on the C-9 checklist for a weekly check of the flow measuring device and an annual maintenance checklist performed on it.
3. Air flow monitor(s) are installed on the hood(s) to provide the means for checking velocity before hood use. Documentation of an air flow monitor device performance is to be done once per week. An example of the documentation needed so that these hoods mav go on a two-vear survey rotation is located in the Industrial Hygiene Plant Manual in Section #10. Appendix C. Inspection, zeroing and calibration of air flow device is to be done once per year. This documentation is to be part of the Industrial Hygiene records for your department. Please forward documentation to the Plant Industrial Hygiene Contact for your plant..
CONFTDFNTTAl
DO 008??3
confidential do 008224
n?[G?)
no (lt>0)
lUb 9?
Itl (C,(i\
His 2CQ
U0tb
I (pb (J/>oo0o^
I *> 6
\bt} ^ 2-A^,
^ zO'
cot^FTOFNTTAl DO 008225