Document e04X4njVJdvXEznE7wRLadM4
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INDUSTRIAL HYGIENE MONITORING FOR
ASBESTOS
TO: R. F. Painter , Trlr. 5583 511
Computer Ref . W-1076
CC: C. W. Carman, 725-105 G. F. Hurley, 701-334 L. R. Noble, 511-2149
PERSON MONITORED
D. R. Paugh, 511-2009 H. L. Robinson, 701-401 E. C. Shipley, 511-2009
E. J. Tawney, 5583 R. G. Rowe, M .D., 753 R. J. Sexton, M.D.,51
Location Bldg. 777 - Room 111
Date 8/19/80
EXPOSURE RESULTS
Sample 1 2 3
Sampling
Cone. fibers
_ . Time
10.1 5 nm/cm 3 118 minutes
7
Comments
P.M. - Wetting and bagging insulation and cleaning up area
4
5
6
Time-Weighted Average Concentration (TWA) 2. 5 fibers > 5 tim/cm3
Ceiling Concentration
____
ALLOWABLE EXPOSURE ---- -
TWA 2 fibers > 5 iim/cm3 (oSHAJ
Ceiling _______________________
OSHA
UCC UCC
Other Other
COMMENTS
Even though the workers had been advised to keep the insulation well wetted, it didn't appear as if they had done so.
INDUSTRIAL HYGIENE MONITORING FOR
ASBESTOS
TO: r. f. Painter, Trlr. 5583 511
Computer Ref. w-1076
CC: c. W. Carman, 725-105 G. F. Hurley, 701-334
D. R. Paugh, 511-2009
E. J. Tawney, 5583
H. L. Robinson, 701-401 R. G. Rowe, M .D., 7
L. R. Noble, 511-2149
E. C. Shipley, 511-2009 R. J. Sexton, M.D. ,
512
PERSON MONITORED ____________________
____________________
Location Bldg. 777 - Room 111
Date _____8/19/80
EXPOSURE RESULTS
Sample 1 2
Cone. fibers >
14.4 5 jim/cm 3
Sampling Time
z
Comments
125 minutes P.M. Stripping insulation and cleanup of area.
3
4
5
6
Time-Weighted Average Concentration (TWA) Ceiling Concentration
o
3.8 fibers > 5 pm/cmJ
ALLOWABLE EXPOSURE
TWA 2 fibers > 5 tim/cm3 (oSHA^? UCC
Ceiling _______________________
OSHA
UCC
-
Other Other
COMMENTS
The concentration of fibers was as great the second day even though the men had been advised to keep the insulation well watered.
WORK BY /]^ APPROVED BY
UCC 017449
(JJO o 9 O (
INTERNAL CORRESPONDENCE ---------------------------------------------------------------------------------------------------------------------
CHEMICALS AND PLASTICS
To (Name) Division
Mr. D. L. Johnson 511-5518 (512)
location
-
Copy to
Mr. C. W. Carman Mr. G. F. Hurley Mr. C. R. Johnson Mr. D. R. Paugh Mr. P. A. Perry Mr. C. E. Richardson Mr. H. L. Robinson
Mr. E. C. Shipley
P. 0. BOX 8361, SOUTH CHARLESTON, WEST VIRGINIA 25303
Date November 16, 1979
Originating Dept Technical Center IH/EP
Subject
Asbestos Monitoring 704 Powerhouse, First and Second Level
/
PROJECT
Determine the exposure of Construction workers to asbestos fibers during insulation stripping in Building 704.
DATE OF SURVEY October 26, 1979
DISCUSSION
On October 26, 1979, separate breathing zone samples were
taken on <.
1,
and F
to determine their exposure to asbestos fibers.
They were stripping and bagging approximately thirty feet of an
8-foot by 6-foot exhaust duct coming from No. 3 boiler in Building
704 - Powerhouse on the first and second levels. During the
- stripping and clean-up procedure all Construction workers wore
Norton disposable dust respirators, gloves, and coveralls. All
others who needed to be working in the 704 Powerhouse operating
area were given 3M disposable dust masks to wear during the strip
ping. Because the duct was hot and electric motors were situated
near the duct, the insulation was only minimally wetted with a
garden sprayer.
The dust created by the stripping and throwing the insulation to the floor became so heavy that the insulators were advised to
UCC 017450
Mr. D. L. Johnson
2
11/16/79
hand the insulation to the laborers to be bagged. The stripped asbestos was placed in plastic bags for disposal.
When the dust became so heavy at the site of stripping on the second level, samples were taken on the first level on the north and south side of the stack.
After the stripping of the pleted and the dust had settled taken on stripped insulation and cleaned
duct on the second level was com some, breathing zone samples were
as they finished bagging the the second level area.
When the stripping started on the first level, only area sample were taken. Two samples were taken on the first level on, the north and south side of the stack, and one sample was taken on the west wall north of the stack on the second level. All area samples were placed at breathing zone level.
CONCLUSIONS
The dust collected on the breathing zone samples of ' - -- . _
? was so
heavy that it was impossible to determine the concentration of asbes tos fibers on these samples. The results of the other samples are given in the attached table.
Since asbestos levels were so high on samples taken after some of the initial dust had cleared, they were likely higher during the period of greatest dust concentrations. Since all people in the
area wore masks they were probably protected if a good mask fit was obtained.
RECOMMENDATIONS
It is suggested that all Construction workers that are involved with the stripping and disposal of suspected asbestos containing insulation be shown the Industrial Hygiene slide presentation on the proper handling of asbestos containing materials.
REFERENCES
Volume 38C-29X4-Rla Asbestos, Dust Determination By Membrane Filter Technique Using Phase Contrast Microscopy
UCC 017451
INDUSTRIAL HYGIENE MONITORING FOR
L(jO^ 6 6C/J &
ASBESTOS
TO: R. F. Painter , Trlr. 5583 511
Computer Ref. W-1075
CC: c. W. Carman, 725-105 G. F. Hurley, 701-334 L. R. Noble, 511-2149
PERSON MONITORED
D. R. Paugh, 511-2009 H. L. Robinson, 701-401 E. C. Shipley, 511-2009
E. J. Tawney, 55;
R. G. Rowe, M.D. 7 53
R. J. Sexton, M.I 512
Location Bldg. 777 - Room 111
Date
8/18/80
EXPOSURE RESULTS
Sample 1 2 3 4
Cone.
fibers > 15.4 5 iim/cE 3
Sampling Time
/ Comments
41 minutes A.M. Stripping insulation
11.3
"
149 minutes
P.M. Stripping insulation and helping with cleaning of area
5 6
Time-Weighted Average Concentration (TWA) Ceiling Concentration
4.1 fibers > 5 itm/cm^
ALLOWABLE EXPOSURE
TWA
2 fibers > 5 pm/cm3 (pSHA^>
Ceiling _______________________
OSHA
UCC UCC
Other Other
COMMENTS
More water should be used to wet the insulation before stripping. Those stripping and bagging should always wear their disposable dust respirator while in the area and until the cleanup is finished.
WORK BY APPROVED BY
UCC 017452
INDUSTRIAL HYGIENE MONITORING FOR
ASBESTOS
TO: R. F. Painter, Trlr. 5583 511
Computer Ref. W-1075
CC: C. W. Carman, 725-105 G. F. Hurley, 701-334 L. R. Noble, 511-2149
PERSON MONITORED
D. R. Paugh, 511-2009 H. L. Robinson, 701-401 E. C. Shipley, 511-2009
E. J. Tawney, 5583 R. G. Rowe, M.D., 7 R. J. Sexton, M.D.
512
Location Bldg. 777 - Room 111
Date
8/18/80
EXPOSURE RESULTS
Sample 1
2
3 4 5 6
Cone. iiDer&
6.3 5 fim/cnr*
Sampling Time
42 minutes
Comments
A.M. - Wetting and bagging insulation
3.9
149 minutes
P.M. - Wetting and bagging insulation ana cleaning up area
Time-Weighted Average Concentration (TWA) 2.8 fibers > 5 iim/cm' Ceiling Concentration _______________
ALLOWABLE EXPOSURE
TWA 2 fibers > 5 jim/cm3 (jOSHA^) UCC
Ceiling _______________________
OSHA
UCC
Other Other
COMMENTS
More water needs to be used in keeping the insulation wetted. Disposable dust respirators should be worn while in the stripping area and until the cleanup is completed.
UCC 017453
Mr. D. L. Johnson
3
11/16/79
RESULTS
DATE 10/26/79
SAMPLE TYPE
Area
10/26/79 Area
10/26/79 10/26/79 10/26/79 Area 10/26/79 Area 10/26/79 Area
TIME
ASBESTOS FIBERS
(MINUTES) (Fibers >5 {im/cm3) REMARKS
32/2 LPM
0.28
First level, north side of stack while dust was settling after stripping on the second level. Cleanup being completed on second level.
27/2 LPM
0.51
First/level, south
side of stack while dust was settling after stripping on the second level. Cleanup being completed on second level.
15/2 LPM
3.93
Bagging insulation after stripping on second level finished.
15/2 LPM
2.97
Bagging insulation after stripping on second level finished.
51/2 LPM .
1.01
First level, north of stack while first level being stripped.
55/2 LPM
0.9
First level, south of stack while first level being stripped.
48/2 LPM
1.16
Second level, on west wall, north of stack while first level being stripped.
REPORT PREPARED BY
Ruth Clise Technical Center Industrial Hygiene Group
Ruth Clise
UCC 017454
Mr, D. L. Johnson
REPORT APPROVED BY George F. Hurley
RC/sc
4
11/16/79
/
UCC 017455