Document QkO4Xd30qB09R2reOrzXVObo8
FILE NAME Corning OC
DATE 1969 Oct 30
DOC OC284
DOCUMENT DESCRIPTION Unpublished Consultants Report Special Hazards Survey
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HAZARDS HAZARDS OVERS FIRURGLAS
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INDUSTRIAL HIGDINE
P.S. P.S. PERSONAL FROM OF ICE THEOFFICEOFFICE OF
FICTOZ
B. DEDUSTRIAL DEDUSTRIAL
OCTOBER
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The current threshold limit value for dust
particles per cubic foot The limit is if contains asbestos regardless of
containing asbestos is five million
set on the total amount of dust presept
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of rovision of the threshold Halt
the RefecRetfeo cts os present The 1969 z
values has posted in its list of intended changes Bre an
the threshold linit value for asbestos containing dust of two million per cubic foot When a change is contemplated in the threshold limit partioles e ST
notice of that
no information
change is published for two years After
to indicate that the revision should
that
tine
value a
a3dPi:e
if thero is i> a)ies
rorised threshold linit value bocczes the
not take place then the |-.. ot! a 2 ers
cited above are based
the
permanent ons Both of the Units i sc
wow a e anes ", which was used in
upon to
standard impinger light field count technique f+)
rovised
part
cross the boundary between the purrent and the iFy
<
',
standard milliliter
An additional proposed threshold Unit value is twelve fibern
fy. fpielrter rathod atgr4e3a0tertimtehsanphfaisvee mciocnrtornasstin length as determined by the membrane fy
This magnification technique was not o&e
en
pamples which pamples pamples The threshold limit value for free silica is determined by dividing 250 by
atnd site
of
sun of the valus then
porcentage of
will
for
free
silica
present
plus
fire The
the 28. threshold Unit BAEZ.
vary
each sample depending upon the percentage of free
silica presant The threshold luit value for free
bsZamde ee
we
collected
is
listed
with
that
cample
in Appendix
silice for the
Qielaty Bhd
A (ak
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g ree
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CFA
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SAYAARES TO a Se BEv) )
a ae
in our therRoeeer heDaeeueerhe, threshold DISCUSSION threshold
Due to the low amount of free silica present
.
e.
samples th
limit value with respect to free silica is
x?
results
of
our
samples
and
above
the
threshold
limit
considerably
valus
above
Frets,
taining dust Limiting concentration
for asbestos con *'2. &
Unit
valpe
for
asbestos
on
dust
dust exposures Mo
will
based on
the
based gee
oy
ett thee
a a
sf.
8~e e
s
weaecara Of the
twelve
samples
taken
oight are
above
the
current
threshold
Unit
o wy
FaY
valo iof
eel, .
and all are
. that there
above
the proposed
threshold
limit
value
He
conclude
e
en
fos
as oc
therefors production ary
areas
of
is this
a
generalised
exposure
to
asbestos
dust
throughout
the
production
*!:
5
e
ere
production plant with the possibility of asbestosis cases crising always
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oe .
be present Employees thould
monitored zodically
cases
6
tia always
8.
To reduce the possibility of asbestosis arising in employees would be best
it to control the environment in which they work
' ' asbestos in the product itself
This of course could be done
Ha
nature of the product my require the presence of rerbeoasltiozse thh owe evedrecitshiaotnthe *
on oliminating it will have to be made on the basis of product evaluation and is
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goats
o-
4) es
teen
in The second environmental control is to reduce the dust
a
This can be done by the installation of
exposures the air
with good industrial ventilation
exhaust ventilation designed in accordance -
in reducing the amount of dust practice Good bousekeeping is also essential _
cweeping machine was being
During the purvsy it was observed that the
wy
pickup
of accumulated
operated in a dust Part of the
ranner which did not dust exposure occurs
allow for from the
the
mudrum
of traffic orar dusty floors
;
movement ae
Roath
ott
le
ost aales
.
. "e ere wr Ot pret ree te
The The exhaust ventilation system should be gone over to to ours that au roe
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eS
gee
8g
a, '
sad oanee.? A . .
2 oo :
aitt
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aoe
an
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a /
i it shader, operating ft4 Cn . cad
operating
.
operating aay
Plein
at
peak
capacity capacity capacity
.
it DV: General
.
.
General B. General General a f 3vo
causcedaused shouldshouldvehiclebe capcityimprovterdaffictrafic the airborne ners"
General General
bousekeping bousekeeping dust
:
to decrease decrease
amount amount of of
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Edward
B.
Edward Industrial IndustrIindausltrial B. HygienistHygienist Hygienist
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