Document Rj9bMEzbV3MXGX6J4XY4NG2mV
FOR DU PONT USE ONLY
AR226-2909
W. A. FINTEL TEXTILE FIBERS DEPARTMENT SEAFORD
November 22, 1982
SUMMARY
ffRIAL fYGIENE SURVEY ON Tu r in g : primary a p p l i c a i'io n o f
N THE BCF AREA AT fiEAFORD la b o ra to ry R eport No.
!
S e p te S S e I" *H S a
W"
S eafo rd on
d e te rm i'n e th e an of 7.
i ^ , * i ! L 2 02 2 ` J W " ere c o lle c te d tc sp in n in g m achine o p e ra to rs
__during p rim ary -ap p licatio n r - , - r e s u lts ranged from 0 .4 to
LOGAN, re c_oi
in m, b r e 4. e e a U ated u s in g th e c o m p u te r p ro g ram
This i i i i S T i S t exposures !
o
S7 } ? : T -
o f e x c e e d in g th e 5 mg/m3 ihEL i s l e s s th a n i i )
(P ' l l l t y
background
:
which has a ,,,, application o
f
la s an a q u eo u. s.. b a s e c j b j w eight.
| n ?mi i s e v o lv 1
as % c o n ta m in a i^ ^ ^ ^ ^ ^ ^ B B r d e g ra d ati!
s present
com m ercial ru n ... prim ary fin ish tc ,^ _
and fin is h r o l l speec were
a 28-position
was a p p lie d a s a
Hot c h e s t rpm.
t< 'p e r a t u r e s
were
1 8 0 6C
-1 Company Sanitized, Does not contain TSCACBi
I
i
j
1
J
AIR SAMPLING AND ANALYSES
ih^
33
*, jH2 8e_1waii*xl
e t1t-/ fPla" c kc afradi -Si ..r.i ejl. 58470 rp.oiCta9~s s iu?7 t-m-a--"h!'lvsdsr*sn vtiSurttioue me lIn
?- ,i r S wh ?iuowmmaatcog rc*ponr atlu1uc-ljmi-cm--nn-- fpn._aa/_c Uk^ eA dJ
^g raapphn w ith
See 1
qquuiip?ppel 5_ _% --i q r
dd a
a a
iwinl l_*__
h dan C0880
nation
* * ? % _________
J A n a l y t i c a l d a t a a r e re c o ri
RESULTS
! - g h t Pe rs o n n e ^ sam ples in d ic a te d t h a t ^ M f ) f ? S r ? w ' r m a / m 9 96^ 0^ 0 , 7 " 1 *6 * * M * ' and M B L p l e s ranged
9 /? ' *** three blanks b lin d ly subm itted as
e ig h t-h o u r TiSe W e ig h te d A v ir ll^ i^ w l^ tllo s S r J s ^ ^ r t h ^ s o ^ ^
? a S g ^ d e f? o S r o f 9-1. f m g / i eo f ^ c a lc u la tio n s is in Appendix T T ^ *
Aj n .le x| pfl a n*ina* -t iToanbloef-ArJ.TifW*Al
DISCUSSION AND CONCLUSIONS
Du P ont S a f e ty E n g in e e rin g S ta n d a rd S-12-T "Strateav for-
fSniiS-.SSS=^*5STpiIS2f SS-^JSS-SxSeSrSiSi-
S3s m
R e s u lts in d ic a t e th a t th e r e i s l e s s than a 5% p r o b a b ilit v o f ` reK m D lde i ? e f d ln ? " * 5_ ng/ra" AEt- These job * sh o u ld be .h. T- -- o: "rryi on i*hhx^chh SLto bhas ei . ^n er edf eaa-r treo ru tifn0ec saa m^ palirn' g " f r ePqTMu evnidc ey . a good
and 2 T5 em a /m ^ Si ( P ) ' a l k S o b b a in e d f o r p e r s o n n e l sa m p le s ( 7 .3
tlb o l'zto n
rK LTeaX GC tUbeS a n a l y zed a t J a c k s o n
tS d S i S n - t o f i ! " J , Lab? 5 afcof y e s io n s e l e c t i v e c h ro m a to g ra p h y
fronia B S i
f l u o TCd e * ifc i s assum ed t h a t a l l flu o ric * `
b f c a i l l ^ U ^ ^ K S S K m may xi ' '
^
abme ount o f f l u o r i d e r e p o r t e d- .e s t a t e s a n a ____ ... ,.... c n e - r S t a l
2,tcort*> TSCAC
S an itiz,,eedd.Qoe s n ComPan^
I
Sf af 5 d , s a n a l y t i c a l m ethod may a lg o o v e r e a t i n a t e f i B V l
ZZiTZS?
T h is
uev5iopmt "dthe=toT2SiS5
jjy
Report by:
^ J ' / r f r r /,- . < V /,,- > / , -J/
c n risto p n e r W ierm cki In d u stria l H ygienist
^
Approved by:
.!
S te p h e n W. Dixon Section Supervisor I n d u s tr ia l Hygiene
CW :tac:W P:2.20 S a t e I s s u e d _ November*
H ask ell Lab. R eport N o ..704-82
i
- 3-
n tsC A cSl no \co n ^ v any.S .n ' - 0085
TABLE I
, ^ f ESULTS 0F A^R SAMPLING AROUND BCF SPINNING MACHINE 3 5 o K S S I M f i f f J82
Sample
jj
P o sitio n 220.
ii ! 1"
A ir Vol (L) 8 .0
9.6
5.3
9-6
11,5 18.5
T im e ( Min)
128
158
86
161
182
300
TBA (a q /m 's )
1.2 1 .0 0 .7 7 .3 b 2 .8b 0 .7
Personnel sam ple on tubei
Personnel samplfc on SMOa .
Personnel sam p le on SMO.
Personnel sa m p le on SMO.
P e rso n n e l sam ple on tub?
Area sam ple.
I-Beam work s ta tiiwo.n.,, 1 8 .5 N .E . s i d e , in thj" BZC.
302 . 0 . 9b A rea sam p le.
Beam work s t a t i o r i , w e st s i d e , in th 4 BZ.
17.9
Above "su c k e r guf.' P o sitio n 211.
17.5
295 290
1-4 Area sam ple. 1*6 Area sam p le.
H -82-S 2-11
I-Beam work s t a t i o n , N.E. s id e o f machine # 3 4 , in th e BZ. :
B lan k
18.6
300
H -82-52-12
11.5
185
0.4 Area sam ple.
0.0
(pg)
1.4
Blank sam ples were subm itted b lindly as sam ples.
Personnel sam ple on SMO.
- 4-
Company S anitized. D oes not contain TSCA CBi
TABLE I l CONT.^
RESULTS OP AIRi SAMPLING
I
AROUND BCP SPINNING MACHINE 3 s T ? ^ E P T E M B E ^ ! u 1982
Sam ple # _______ L o c a tio n
H -82-52-14 H -82-52-15
B lan k
H -82-52-16 Blank
A ir Vol (L) 6.0
10.5
-- 5.4
5.9
Time (Min> 101
167
85
96
TBA (mg/m ^ )
Comments
1.0 Personnel sam p le on SMO.
0 .0 (>g)
1.6 Personnel sample on tu b e r.
0 .8 (jsg)
1.1 Personnel sam ple on tu b e r.
1.1 Personnel sam p le on SMO.
SMO = s p in n in g m ach in e o p e r a 'to r .
These sam plea were a n aly z e d :at Jackson Lab
bz * b r e a t h i n g z o n e .
see te x t of rep o rt fo r d e ta ils.
(0 XI
HLR4704-82
ii
- 5Cosiip3n>-
contain TSCACB^ ss no
i
i
TABLE I I
EIGHT-HOUR TIME WEIGHTED AVERAGE >TW OF SPINNING MACHINE OPERATORS AND TUBERS TOi
EXPOSURES
HLR#704-82
-c
APPENDIX I
lo g n o rm a l P r o b a b i l i t y Pin* #* .u ,, E x p o su re s and th e A rea Lp mmpp le s CC ooUllee Cc *teSd 8A? nronuenldJ ESigphintn" HinogurMTaWcAhine 35
M . = 4 * 1:'* * S**S* " " *****" * W * * * * * * * * * * * * *
9 ? . 22*r v7 *
* ** *
99.5**
*
99**
*
**
98**
*
**
95**
*
**
#
p 90**
* *
R*
0 SO** B* A 70** B*
I 0**
L 50** I T* Y 30**
* 20**
* 10**
*
* 5**
* 2**
__
0* 0*
*.
*
* 0 *0*
* !1 * 0
* *
* #o *
.* '*
* * * * * *
* * * * * * * * *
* *
*
*
1**
0 , 5** *
0 , 2** 0 .1 * *
*
* *
* * *
; :
* * * * * *
*
0.10
0 ,2 2
0.46 ; 1,00
*
2 15
*
4.64
* 10.00
^ ( 0 ^ - E V E L S IN SEAF0RI B CF 9/2Qir82
D ata is log noim al.
LOGNORMAL
P r o b a b i l i t y o f e x c e e d in g 5 mg/m^ i s l e s s th a n 5%.
HLR#704-82
TS'CACB^ * not contata 7 S an d ed . B0`
V.
APPENDIX tt
___ P g>e': ^ ' T*. T*. . . T, are the incremental oponue times at average eonceotnttfonCi, G , +
** usct^ as the denominator since Q$HA standa*.* and TLV* axe based on an eight-hour work day.
Ort -
tmm
23) 'E ,(T iled
- TWA Tumi work time
rime-weighted averageconcentration (TWA)for this particular manw|
Where:
2i) ; Tune-weighted average exposure (TWA)
: To determine the dme-wei
average
. exposure of an individual to airi contami-
{ ' " **.4 detailed description of iTretis he is
- *hen" must be obtained, as descri earlier. In
; Edition a sufficient number of sampling
* aeasurements at the breathing level at
positions occupied by employees, -- < plant operating conditions are ne
various
- ii ha typical work environment, the employee
' J say be exposed to several different short-term
"age concentrations during 'the worlshift
aie to changes is jab assignment, workload,
**ation conditions, processes, and the like).
, e-weighted average (TWA) exposure "olved as a method of calculating daily or full-
^average exposure byweighting the different
r , "11 avefage concentrations by exposure
-gle' !t ** equivalent of iritegntingthe
2S) ? ? ? " "
vr the total time base of
; ft may bedeterairied by yw f '1lowing
Zi) :
twa - c, t, + o t 4 c t l . 8 hr |
.'if* TWA " Mme weighted avenge eoneentra; -a. usually ppm or mg/m*. ;
! '* * concentration of contaminant during the
T| " Duration of incremental exposure
Q m Concentration of a specific air crmumhy nant during the incremental time period T,
Tww ** Total work time per shift eight-hour
workday
a
Several samples (equal or unequal time duration) are obtained awing the entire period appropriate to the standard The total wf covered by the samples must be a minimum of seven hours for the needed eight-hour TWA.
Personal samples for particulates are collected on a foundry worker as follows:
Sample
No.
Time
1 7:00 am. (start of shift) to 8:00 p.m. 2 8XS0 .m. to 9:30 a.m. 3 9:3pjun. to 11:00 am.
* D:P0 a.nt. to 1:00 p.m. (turned off and . covered for 30 minutM during luneh S . 1:0ep.m. to 3:30 pjn.
The measurement obtained is a fall period
consecutive simple measurement because it
" v*r
e
appropriate to the
TLV.and the OSHA standard (eight hours) and
the samples are taken consecutively (or serially).
HLR#704-82
SAC
8- Company San'Stfized. Does not contain TSCACi
1
appendix I I (co n tin u ed )
17--M ethods of Evaluation
Examkzi A personal sampling pump with a
respirable dust sampling head is stag ed to an
employee at the start of his shift at fliflft #.m
tuned oft from U:pO ajo. to 12:09 noon(lunch)
andtuned on Main!from 12:00 noonto 4:30p.m.
The sample collected constitutes a full period
sample for the determination of respirable dust
exposure because it covers the entire timeperiod
appropriate to the TL.Vor OSHAstindardteight
hours!
,
In some eases (t is impossible, because of
limitations in measurement methods as with
direct-reading meten or charcoal tubes, to
collect a series or consecutive samles whose
total duration approximates the period for which
thestandard isdefined. In this case, grab samples
are taken over some number of short periods of
time arranged to be representative of the entire
work shift.
j
sr
In general, in using thisformuia. thetime,--- by a worker at various jobsshould bed e te n t to the nearest thirty-minute interval, u considerable variation in the level ofiirJ L / 1'1
natien,shortertime intervals willhave
Example For example, assume that ,,
employee spends the first four hours of hour shift in the vicinity of a heat-treTT operation when the measured carbon
coarentiation in airat his breathing zone iairiy constant at 50 pans per million.
For the remainder of the shift (four boon,
assume that the operator worked in a differs part of the plant wbere his exposure to aria, monoxide was essentially zero.
What ishis time-weightedavenge exoomitfc
carbon monoxide?
`
Solution:
Si
If t-
*
Examhei It is necessary to obtain an exposure measurement for benzene using cha- -oal tubes. Each charcoal tub sample takes 30 minutes to collect It is intended to collect 10samples out of the possible sixteen 30-minute periods in the eight-hour period. {These ten 30-minute duration samples constitute 10 grab smeles of the worker'sexposurebn the given day. Theestimate of the eight-hour TWA exposure obtained from analyzing the readings ofthe 10 tubeswouldbe a grab sample measurement.
For example, suppose a worker is exposed as follows:
Time of ;
Average exposure
exposure (T,) concentration (ppm) (C,)
t hour 3 hours * hours Total 7 a hours
3S0
200
ISO
(* hrXSO ppm) -r (4 hrXO ppm) 8 hr
c.
200 ~T~ * 25 ppm (TWA)
9 for carbon monoxide.
7e v
S
Example.- In another case assume that >
machine operator (working the 7:00 a.m. to4.W
P-m. shift) tending an automatic screw machine was exposed to average levels of oil mists
t.
indicated below:
Time ,
Average Level of Oil Mists (mj/m )
Then the TWA for tne eight-hour workday wifi be `
TWA ( 1 hrX320 ppm) + (3 ! (200 ppm) a-(4 hrX 150 pom)
8 hr -
7.-00- 8:00
8:00- 9:00 9:00 10:00 10:00- 11:00 11:00- 1100 1100- inx>
1:00- 3:00 3:00- . 4:00
,
1530 ripm 3 hi-
194 ppm
`lunch period, no exposure
0 1.0 4 IJ
10
0.0
4.0
3.0
546
HLR#704 -82
9
