Document Z4d5B8YK61a1oe6erxEzVVZM8
FOR DU PONT USE ONLY
AR226-2909
W. A. FINTEL TEXTILE FIBERS DEPARTMENT
SEAFORD
November 22, 1982
OM^^, [TRIAL ^YGIEME SURVEY
C"UyR^INfNGT: HPERIMBACRF YAkAaP'APL-IC-A'-T-ION OF
ratory Report No.
SUMMARY
An industrial hygiene survey
September 20, 1982. Areaj and
was
conducted
at
Seaford
on
determine the ^"^^llbers :"
personnel samples
r^e^sB^HfSIMeaBfollrldBBtfC'JF spinning
were collected to machine operators
off----------
during primary-application
7.3nig/n^ofH
LOGAN,
^^.jSa
neywiere
r
ipnngres
evaluated
ults
usin
g
r
a t
n h
g e
e
d c
o
from mput
e
0
r
.
4
to
This
recommL.--,- in Du [Font Safety confirmed that; exposures do
Engineering
Standard
program
S-12-T.
of exceeding the 5 mg/m
AEL
is
not less
exceed the than 5%).
AEL
(pro*
^ility
BACKGROUND
which has a
application
_-
oi
as a contaminaf
n f -- -- ^ ^ B ^ 'tlfa--sa--n fbaq^uewoeuisghbt.asecontainuad^BBB
^B^B^B^B^B^BmBdRymJ201is'^e01v1o1lw1"^!^^^w}^)!^!^^5^^^^^ -
'or a^ thenSar degradatfon^roduct. Present
commercial run whj
primary finish toig^
and finish roll spe
Hot chest
rpm.
a 28-position was applied as a. Rperatures were 180^C
Company SanUized. Doss not contain TSCA C%
AIR SAMPLING AND ANALYSES
J--m--i--fUI^--^^--^^^^w^^a^s^MI^^' collected on Tenax*-GC Cubes. Air was
d
tnrougnehe^ioss ;by Du Pont Model P-200 pumps calibrated
at about 60 raL/min. Ten(ax-GC tubes were thermally desorbed ct
200C using an Envirochem Unacon Series 810 Thermal Desorber at
Seaford. The carrier gas was nitrogen. Samples were analyzed on
a Hewlett-Packard Series 5840 ais chromatograph equipped with a
3.26' x 1/8" stainless steel column packed with 15% Igepal* C0880
and 5% potassium hydroxijde on Chromosorb W. A flame loniza^on^
RESULTS
;
offuj The eight personnel samples indicated thatuBBj
concentrations ranged friom 0.7-1.6 mg/m , and areasanples ranged
frwo.m 0e\ .4ji-_1i .6r _mg.//_m-- . mThLe_;j it.hl.r_e__e;bL.lIa-.n_i.._ L. i---i.dj ily.. s_.u.tb-_m: i1t.t1e._d.3 a-_s
samples had low background levels of W^WTable I). Calculated
eight-hour Time Weighted Average ("WA^^qSosures for the spinning
machine operators and tu aers^r^presented in Table II? they
ranged from 0.9-1.2 mg/m
An explanation of TWA
calculations is in Appendix
'
DISCUSSION AND CONCLUSIONS
Du Font Safety Engineering Standard S-12-T "Strategy for Workplace Sampling for' Ebcposure to Chemicals;" presents a
strategy for air sampling and analysis. This analysis was done
using the computer program LOGAN and is attached as Appendix.I. The five eight-hour TWA land four area samples collected around
Spinning Machine 35 were.' combined because the omega statistic indicated that they were' from a single distribution (see S-12-T).
Results indicate that there is less than a 5% probability of
exposure exceeding the 5 rag/m AEL. These jobs should be
resampled at least once per quarter for a year, to provide a good history on which to basel needed routine sampling frequency.
The higbesty|Hfj7al|jes obtained for personnel samples (7.3 and 2.8 mg/m") were from; Tenax-GC tubes analyzed at Jackson Laboratory. Jackson Labarafeory uses ion selective chromatography
to det&rmi.ne total fluorLde; it is assumed that all fluorideii
amount of flucrids reported.
contain -ySCACB^ Does"01,t CoroP8^ Saniilized.
collecSteeadfob-r-ed_c--'sa--u_sa--enatlhye-ti--cf^a^-ualimGemeiAtohuoniidAizicamat^aiy^oonnalsdQoeeiteocvteorrescaknimateulff\
finish
components
that
borne
off
the
measure other
fhvw agacsket ig<to-.g-.r--ap~hi. -----
Alenaarolyrt^icKaelseSaercctfifornff,i^revej Topnent and the Haskell Laboratory
Report by;
^-/ ''7~C/~:' ' //^. ''''' /^'^y
Christopher wiernicKi Industrial Hygienist
Approved bys
Stephen W. Dixon Section Supervisor
Industrial Hygiene
-
3 -
.nTSCACSl
Ooes "0AconW Sawa' ued. COWP^
TABLE I
FOvfSffHSfHfIl RESULTS OF AIR SAMPLING
AROUND BCF SPINNING MACHINE 35 ON SEPTEMBER 20, 1982
Sample
Air
Vol
Tin.e
(L)
(Min)
8.0
128
9.6
158
H-82-52-4 H-82-52-5 H-82-52-6 H-82-52-7 H-82-52-8 H-82-52-9 H-82-52-10
H-82-52-11
5.3
9.6
11.5
Above "sucker gujn" Position 220. '
18.5
IN
Bea .E.
r
a
s
i
wor
de,
k
i
n s
t
taht^i
o
n,
BZ
-
18.5
.
Beam work station, west side, in the BZ.
Above "sucker gun"
Position 211. I-Beam work station, N.E. side of machine #34, in the BZ. ;
Blank
17.9 18.6
86 161 182 300 302 295 290 300
11.5
185
TBA
1.0 0.7
b
7.3
b
2.8 0.7
b
0.9
i-4 I6
0.4
0.0 (pg)
1.4
Comments Person-net
sample on tuber* Personnel
sanplfc on SMO . Personnel sample on SMO. Personnel sample on SMO. Personnel sample on tube ; Area sample.
Area sample.
Area sample*
Area sample.
Area sample.
Blank samples were submitted
blindly as
samples* Personnel sample on SMO.
Compare Sanitized. Does not contain TSCA, CBS
! TABLE I (CONT.)
FORflHHHBIHHvJ RESULTS OF AIR SAMPLING
AROUND
BCF
SPINNING
i
MACHINE
35
ON
SEPTEMBER
20,
1982
Sample #
H-82-52-13
Location
H-82-52-14 H-82-52-15
Blank
H-82-52-16 H-82-52-17
Blank
H-82-52-18
Air
Vol (L)
6.0
10.5
5.4 5.9
Time
(MJTU
101
167
85 96
TBA (mg/m'3)
_Coninients
1.0
Personnel
sample on SMO.
0.0 (pg)
1.6
Personnel
sample on tuber.
0.8 (^g)
1.1
Personnel
sample on tuber.
1.1
Personnel
sample on SMO.
a" SMO = spinning machine operator.
c
These samples were analyzed B2 s breathing zone.
at
;
Jackson
Lab.,
see
text of report
for details.
HLR#704-82
5 -
, ^con^SC^
CP^^-0
TABLE II
T0|fi-------- EIGHT-HOUR TIKE WEIGHTED AVERAGE (TWAJ EXPOSURES
OF SPINNING MACHINE OPERATORS AND TUBERS
Subject
Social gecurity
8-Hour TWA
,
Exposure to TBA (mq/rn )
1.2
0.9
0.9
4.5 2.1
HLR#704-82
6 - QpfflP^,y.,e^d' Oc^00^5^081
APPENDIX I
Lognorroal Probability Plot of the Personnel Eight-Hour TWA Exposures and the Area pamples Collected Around Spinning Machine 35
^^t^X:X;!;:^^X)|CXXA)i!N!^}|!^
9?<.';';.::t' 9?>g!(;-!?
99. 5.^
99HC)i
*
98^'ii!
X;
95*s(;
*
P 90**
-
R-
0 SO**
5
^ 70
B
*
I 60
JC
'.*.
'
!
K!
'
if;
0
;
*
*
0
*
0
0
L S0*
I
40!f5f;
^ <( *
T
Y 30lMi
0 -
O*
20*^
^
.
^
' ., _
<;
*
^
*
10*
*
^
'
-
*
* 0
*
5
*
*
!
*
.
AkW
Of
A
T-
.
1;{- ^
0.5)(;$
.
,);
*
fc
^
0.2l|i);
O.I**
3);
*
i(;*iS**^^*)p^$-*)(i^^
K.
*
*
ik
it;
0.10
0.22
0.46 ; 1.00
21S
4.64 - 10.00
/H()l.EVEL5 IN JSEAFORBOCF 9/2^82
LOGNORMAL
Data is log normal.
3
Probability of;exceeding 5 mg/m is less than 5%.
HLK.704-82
^con^^06' . , -^p^S;0?8'-00"
^
APPENDIX ZI
:ocretBeotaJ exposure time.
T- Ttee, Ti. Ti, Ti... T, are the incremental
exposure times t average cancenuitfon &,&,+
C Kight houn is used as the denominator sine* OSHA {tandai^s aad TLVs are based on an eight-hour wori: day.
On
2ril m) (o
TuMi work time
- TWA
SA)
25) :fl
Tun>wightd avrag* xpowjr* (TWA)
To determine the timo-weighted aveng* exposure of an individual to airborne COflCiUlu^ Euts, a detailed description of " tfcVVh"ere he is iiea~ must be obtained, a* describiead earlier. la iddition a sufficient number of lir sunplinz aeasurementt at the breathing :OonM>level at positions occupied by employees, i oder various phot operating conditions are nee essary.
In a typical work .environment, tbe employee say be exposed to several different inon-tenn ivengc concentrations during t r workshift ie te changes is job assieasaei t, workload, Bttflatton conditions, processes. ) od the like).
" tiroe-weightBd average (TWA) xpofun "oived as a method of calculating daily or fall'
"ir; average exposure by weigbUnj the different hott-tecm average concantntions by ezposuie "ax. It is the equivtient of in tgrating the 'roctairarton values over th totaj tiae base of ^TW/L ItinaybedetenniriBoi'ByJfcf-'lbwiag
amiula:
nvA
0 T. < C. T. 4 C, T.
8hr |
tee TWA - ttae weighted iverajgc ceneensa-
^ USUtHyppo) or g/B*.
,
'' concentration of contamJnarit during the
ilme-weighted average concentration (TWA) for this particular material.
Whenes
T| -- Duration of incremental exposure.
C, Concentration of 2 specificair cootuam. nant during the incremental time period T,
T^g, Total worfc time per shift eight-hour
workday
Seviral samples (eoual or unequal tine duration) are obtained during the entire period appropriate to the standard. The total time covered by the samplesmust be a minimum of sevan hours for the needed eight-hour TWA.
Exuina Penonal samples for partlculates are
collected on a foundry worker as follows:
Safflpto
No.
Tlm
7:00 ajn. (ftart o( shirt) to &00 p.m. tOO t-m. to 9:30 a.m. 9:30 jn. to Tl:00 s-cn. T1:QO a.m. u 140 p.m. (turned off and eoyend tor 30 minutn during luneft l:00.p.;n. to 3.30 p.m.
Tlie aeaxurefflent obtained u a ruil period
consecutive sample measurement because it covers the entire time period aopropriate to the
TLV and the OSHA sandajd ieight boun) and
the samplesare taken consecutively(or serially).
CjtC
HLR#704-82
Compa"^ Sanded. Doe. not contain TSCACB|
APPENDIX I; (continued)
17--Methods of Evaluation
EJUMK& A personal fampling pump with
respirable dmt famp'ing head if anaehed to an
employee at the slut of his shift it 9sQQua,, tuned oft fsw U: iO UB. to 12:09 awn (lunch) and ticud on again from 12:00 noon to 4:30 p.m.
The sample coTlecxd constitutes a nill period
sample for the deumination of respirabledust
exposure because it! coven the entire time period appropriate to the TLVor OSHA standard {eight
bburu.
;
In some cases (t is Impossible, because of
limitations in measurement methods as with
direct-reading meters or charcoal tubes, to collect a series oil consecutive famoles whose
totat-duraflon apprbxtoates-the period for which
thestandajd if defined. In this case, grabsamples
are taken over some number of short periods of
dae arranged to ba representative of the entire
work shift.
In general, in using tImfBr-nula. tnctinc,_
by a worker at various JOBSjhouid bedrtcflaaZ
to the neafot thirty-Biicute interval, if
'
..^ considerable variation in the ievei of air ..',-' w^ti^ natten, shorter time Intervals will have
ExAMfL&For example. au<n dui
eaployee spendsthe fiat four houaafuaBx
hour shift in the vicinity of a hcu^res--
operation where the measured carbon aoaa*
coaeeatntian ia ir at hMffareataalK xone fairiy constant at 50 pam per nuilion.
Ifte,
For the remainder of the shift {four botti assume that the operator worked in a dMvsvc part of th plant-where htSOtpMure lo cA monoxide was essentially tcro.
What if his time-weighted average exooAUtte
carbon monoxide?
Solution:
EmMrLZi It if necessary to obtain an exposure
measureaient for penzene using eh oal tubes.
Each charceai fubfe saapie tate 30 minutes to collect. It is intended to collect .10 saaples out of
the pooible sixieea 30-minutc periods ia the eight-hour pehod. Tnese ten 30-oinute duration samples constitute 10 grab faaeles of the
worker's exposure in the given day. the tstimate of tha eight-hour tWA exposure obtained Jroin
analyzing the readingsof the 10 tubes would be a grab sample measiucmenL
For example, supposea worker is exposed as
follows:
TInwof : xpour(T,)
Ang xpour canentMUon (ppm) (C,)
(* hrX50 ppm) r (4 hryo ppm) 8 tu.
200
---Z5ppm(TWA)
-
for carbon monoxide.
^
EXAMPLE; In another case assume list > machine operator (workingthe 7:00 a.a. to .W p.m. shift) tending aa automatic ferew sacssM was exposed to average levels of oil nuts indicated below:
hours :
ISO
Total 7 a noun
Tune i
Away Lcvfl iff
Oil .Vitti [msfitt)
;
Then the TWA for the eight-hour workday wifl be
TWA:
(1 hrX350 ?nre * (3 !
(;00 ppra) +-(4 hrX HO eon) 8hr
7:00. 8:00
&00- 9:00 9:00.10^10
10:00-11:00 11:00- 12.00 12.-00- 1^)0
1:00- 3:00 J:00-. 4:00
0
LO
j IJ
10
/
0.0
4.0
1.0
i1t5t5n0 Jripm
--^---194 ppm
lunch period, no exposure
546
HLR#704-82
^^d.Doesnolcon^TSCACBJ
Company
9 -