Document w6zro0VQkry31z69aMQZXmoQ
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& I. ou Pont aMt NMsImMoIurs S Company Wilmington. OrukWAnc imm
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CMaiNCutwa ecPANTWtMT
c
May 2, 1968
The following procedure was issued on April 5i 1968, to Du Pont'i Field Project Managers at its various Construction sites.
c SAFETY - DUST CONTROL
In order to assure atmospheric conditions in insulation fabrication
shops which will not contribute to the employees' health problems v/hen working with asbestos fiber-containing materials, the Construetion Division is initiating the following permanent air quality -control prograa to bo effective June 1, 1968.
'
Air Monitoring
'
Environmental air monitoring shall be conducted to provide quanti tative data for site evaluation of dust control efficiency and assure conformance with established Threshold Limit Values (TLV).
1. The Threshold Limit Value for total dust count shall bit
. 500,000 particles per cubic ft. of air.
2 Personnel monitoring will b conducted in the Insulation
shops on site locations. One employee will be requested to wear the air sampler one eight-hour day each month.
3. Trained site safety personnel shall be responsible for the control, operation and adjustment of the air sampling instrumant, recording required technical data associated
C with the air sample, mailing of air sample to laboratory for analysis and compiling records of analysis reports.
.
t. V/hen soliciting participation in the air monitoring program,
craft supervision and Lafety Engineer should anticipate who
c will be involved in work which will produce the greatest oust exposure for what day of that month.
''
137
.. DUP 0900987 earrui rwinee re* eerree uiMe...rweeve emtmttmr
Air Konitorinir (Continued):
5. The personnel air sa.-spline instrument used shall be a Universal Industrial Equipment Co., Millipore filter Model U.0B (qualified for explosion hazard areas) air sampler. The filter used shall be an .8 micron pore
size, Millipore Cat. No. MAUG O37 AO, Type AA, in
plastic holder. This equipment will be assigned to the sites where air monitoring Is required by the Division Safety Office.
6. The filter in plastic holder, upon completion of air
sampling, shall be nailed by the site Safety Engineer
to Morton Corn, Ph.D., Graduate School of Public Health,
University of Pittsburgh, Pittsburgh, Pennsylvania I52I3,
attention Felix Stein. A phase eicroscopy analysis of
submitted sample will be made and a report submitted to
the site and the Division Safety Office indicating:
-
(a) fibers below 5 micron length, (b) fibers above
5 micron length, and (c) total number of particles.
Reports indicating total particle count to be ap
proaching or above the TLV will require determining
cause of ccndition and taking corrective action to
reduee particle count. After improvement has been
applied, a second eight-hour sample shall be con-
.
ducted, analyzed and documented.
Atnoscheric Oust Control
The application of the following recommendations should demonstrate conformance with the established .dust TLV and provide effective ' dust emission control.
1. Materials containing Crocidolite asbestos fiber shall r.ot be purchased or accepted for use. Materials containing Chrysotile and Amosite asbestos fibers are acceptable for use.
2. The pressure spray application of materials with any per cent of asbestos fiber content shall be eliminated.
3. All power tool and equipment operations shall be isolated . from other shop facilities and fabricating operations.
DU? 0900988
if APRIL mi
MAXIMUM ACCEPTABLE CONCENTRATIONS OP AIR CONTAMINANTS
)*-- 52 Uj O
lT"
TABLE 2 - TOXIC OUSTS. FUMES AMO MISTS (CONT'D)
Mumm
2,4-0 (2^4--dlckUropHenojryaeatic
DOT (2,2-bla [p-ehleraphanyO -1,1,1 -trichloraethane)
Dleldrin (l,2,3,4,10,10-lia*achlec^ 6*7-apa*y 1,4,4c44,7,l,lactahydiw 1,4,5,S--dlnatiiana*
ncph*alaiie) Dlaltreeanxma Dlnltrtralucna
Dlnftre--o-cratai
EPN (O-atkyl O-p-nitrophanyl tkionabamonopkciphonato)
Farban (ferric dimethyl
ditklecarbcmate) Farmranadiun 4u*f Fluoride
,, -' ^
Hydraquinona
Iran eaida fume
Lanai Lead erxencta
Lindane (hexachlarocyclahnaana, geauna iaemar)
Llthiua hydride
Maqnatiua aaida fuaa
Malotfiiaa (0, 0--diaathyl dithicphae*
photo ef diethyl arcaptacuccinate) Matifaiiaaa Marcary Maraury (organic cewpCMnda) Mathaxychlar (2,2-dl-e mothaay
phenyl* 1,1,1-trichlareethcrye)
MalyManual (aaluble caoweunda) (InaaiuHIa caaipaaMa)
Hicarina
Pararhiaa (0, 0-diethyl* 0-p nitre* pHarryl thlaphaaphata)
Mf m
Cu M
10
1
045
1
1.5 0.2
04
15
1
24
2
15
04
0.15
0.5 0.025 15
15 5
0.1
0.01
15
5 15
04
0.1
Sabi
Pentachlerenaphthclene
Pentcchlerephanai
Phaapharic aci4
.
Phaapharua (yellow)
PHaapHarua pentachlerlde
Phaapharua pentatulflde
Picric acid
Pytethruai
Rotenene
Salaniwai caopounda (aa Sa) Sodium fluaroocatato (1010) SMluia hydrealdc '
StrycHnlaa Sulfuric acid
TE0P (tetraethyl dlthianepyrw*
phaapHaia) TEPP (tetraethyl pyrapHaaphata) Talluriuai
Tarry! (3.4,4-triaitrophaaplinathyh nitremioa)
THallluai (aaluHIa cempaunda) THiraa (tarraaathyl tHiuraa
dlawHldo) Titaniua dioxide Trlahloronaphthalono
Trinilrataluana
Uranlua (aalubla raraanla) (iaaeiuble caeipetmdo)
Yana4iua (VjO, 4uat)
(VjOj fvana)
Warfarin (3-- Ha* acatonylbency^ Hyjraaycau win)
Ytlrlua Zina oalda fries Zlrcaniua ceatpousds (aaZr)
TABLE S - MINERAL AMO MOMMETALLIC INORCAM1C OUSTS
Mmm*
MPPCP
Sabarnaaa
Silica
WHETS
`
High (above S0K free ailica)
Medina (5 ta SOS fraa aillaa)
Law (boiow 5% fraa ailica)
Cryatakelife (above 5S)
Aaarpbaca
Sillcataa
Aabaaraa Mica
5 20 50
5 20
5 20
Portland ooamtt Soapatana Tala
Mleaailanaaua, includlnq: Algainua oxide Calcilo Dalaalta Liaeatona
SUUot
mi Paa I
2u M 0.5 0.5
1 0.1 1 1
0.1
0.1 0.1 2
0.15
1
0.2
0.05
0.1
14
0.1
5 15 5 1.5
0.05 045
04
0.1
04 5 15 5
MPPCP 50 20 20
50 50 50 50 50 50
DUP 0960005
Ataosnhoric fmot Control {continued):
H of *f
U. All power shop equipment shall, when operated, have Installed exhaust ventilation of sufficient capacity' to remove dust particles at point of origin. Exhausted dust particles shall be ctllectcd by an effective col lector system which will not allow, vent-off of dust
- particles to the atmosphere.
5. Present controlled shop tleanliness programs shall be expanded. A vacuum eloar.sr should be used in lieu of broom sweeping to remove lust particles from shop equipment work tables, litgss, floors, etc.
6. A controlled materials headline program should be
'
adopted to eliminate thctr.ission of dust; for exsmple, when opening and removing materials from shipping
cartons or in the handling and nixing of asbestos
cements. -
Resoiratorv Protection
.
Sever* or isolated conditions may require that respiratory
protective devices be used. Consideration should oe made
for adequate protection of Ftsple in adjacent areas to the
work location producing this condition* A supplied air
respirator or a filter respirator manufactured by Mine
Safety Appliance Co., Pittsburgh, Pa,, Model Dustfoe 77 ,
with filter number EM 21 B-5" should be used.
'
Tour usual cooperation is anticipated in administering these
dust controls. .
.
CONSTRUCTION DIVISION
S/ K. E. Keuper
ivision Safety Superintendent
DU? 0900989
i
s.t. 4013
> 2 Decesber 20, 1971
(,/EOMCMT WO. k . If this eoaes under OSKA, we will alio haw* to eover Ir. ' 'arrangesants with insulating contractors.
cowmrr rr j. j. mmiho - photo frodpcts . vilminctow r- gaeoaaaaa that ferns itsndara not ba issued until the~ new rormat Indicating tha jmirt corarad tor 03HA la la uaa.
J. A. SICMAM . coMHgrrs ne- KKKPAXTIC--K TEX. ,FIB. - OLD HICKORT
/ONrewegflfg 1 - 2__.2_b_ O__p_e_n_in_g_"__b_o_x_a_s__o__f _na_sa-w _la__s_u_i_a_Ct_i_o_n* _s_h_o_u_ld read,
si/' opening boxes aad stocking tolaa fros aaw boxaa of insulation.
Old
Hickory has soda repeated aasplins tasta ef this tola stocking operation
and found thas over TLV Halts. Our aafaty rulas aro being changed
to lneluda this oparattoa whara dust raaplraters will ba worn.
V^gOWCHT HO. 9 - 3.1 - this aay have to ba rswrlttan to haraeaisa with
eoaaanta above for 2.2b*
/YcJhcOauHtOiotnT
HO. 10 - 3.4.1 to refrain frc
This wetting down of Insulation should carry a wetting sown hat linos whara: a) Water could too
flaahad off to vapor aad eausa burns; to) Vatsr could fraeturo pipe or
waldaaats; e) Water could fraaaa out or olow down procaaa flow la "on
atraaa" Haas.
- Dust respirator* ara to too worn anyway whan raaovlag
?!'n.>agKT wo. 12 - 6.1.1 - Bach araa group of lasulaters at Old Hickory ara kao to taka at Isast oao saaplo (not aocossarlly of 8 hra. duration) on dlffarant job oach waak. Mora aaaplos ara raguestad whaa thara aro
indications of any chang* taking plaea or aaw typaa of aatarlals ara bains
triad. This type of aaapllng provldas us with aaw data la seaa jobs and
3shows results of our offarts to isprova dust control la othar jobs.
a. sioxan. cowmrta it p. 1. K. SOCKS - Ttl, FIB. . DORDRECHT
CiniisW--u-t-t-lH-a-T-tio-W-n-O- ."ra51o33ue-asc--n--a-a-s-nt-oaaaosto-o-s-l-n--a-i3s .1a.4poatsaafotllalolwdsu:st
"dtlaso coating on block sourea." Avallabla or
not available la of alaor laportaaea hors.
. X.O--MHE- HT M--O-. 14 - Add to 3.2.2: "Consldoratloa also suat too given to -'expoaura of othar parsoaaol working in tha araa who ara net directly involved". Tha asite warning has been glvaa la point 3*6.2. To our opinion, it applies hero too.
DUP 0901811