Document gaybOj7OxQEqKoOewj9M4kw33

WILMINGTON. OlLAWArtC 1MM (MiMiMtM ecmurrwcMr May 2, 1968 C The following procedure was issued on April 5, 1963, to Du Pont'* Field Project Managers at its various Construction sites. ^ SAFETY - DUST COtITI'OL 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 Construc tion Division is initiating the following permanent air quality control program to ba effective June 1, 1968. Air Monitoring Environmental sir 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 be 500,000 particles per cubic ft. of eir. 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 instrument, recording required technical data associated C with the air sample, mailing of air sample to laboratory for analysis and compiling records of analysis reports. L. When soliciting participation la the air monitoring program, craft supervision and Lafety Engineer should anticipate who will be involved in work which will produce the greatest oust C exposure for what day of that month. 137 DUP 0900987 errrm twin#* re* eerree uvwe...fw*ove e*miarmr 2 3 of y Air Konitorinir (Continued): 5. The porsonnel air sampling 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 equipxant 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 tc Morton Corn, Ph.D., Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, attention Felix Stein. A phase microscopy analysis of submitted sample will be made and a report submitted to the site and the Division Safety Office indicating: (a) fibers below } 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 condition and taking corrective action to rtduea particle count. After improvement has been applied, a second eight-hour sample shall be con ducted, analyzed and documented. Atnoscheric Dust Control The application of the following recommendations should demonstrate^ conformance with the established .dust TLV and provide (Inactive dust emission control. 1. Materials containing Crocidolite asbestos fiber shall not 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 19 APRIL 1*41 MAXIMUM ACCEPTABLE CONCENTRATIONS OP AIR CONTAMINANTS S2T I b-- 52 t-U O lT" TABLE 2 - TOXIC OUSTS, FUMES AMO MISTS (COMfO) 2,4-0 (2|4-dichieraphen*>yaeatic DOT (2,2-bia [p-ehleraphanyQ --1,1,1 -frichJonathan*) Dleidrin (1,2j,4,10,10-heachlec^ 6,7--tttxy 1,4,4*JJ,7,I,I-- ectchydrw 1,4,3,S-dlawthane* naphta lane) Dlaifraamitfla Dlnitreteluene Dlnftre-o-creeei Mf * CuM 10 1 0.2S 1 1.S 0.2 EPN (O-alhyi 0--p-aitraphenyl thienebenienepheaphenate) OJ Farban (ferric dimethyl dithiacarbcmate) Farravanadium lust Plueride ^ IS 1 2J Hydraquinan* 2 Iran aside finaa IS Lanai Lead artenet* Lindane (hexachlaracyclahesana, gemma ieamar) Lithium hybrid* 0.2 0.13 0.S 0.02S Magnaaium aside foam Malathian (0, 0--dimethyl dithiephea* phet* ef biathyl ercaptccucaincte) Manganese Mercury Maraury (erganic cewpcunda) Methexychler (2,2-dl--p- pharryL 1,1,1-rrichlareathcria) MalyMama* (salable caamaunba) (inseiuble campaaaba) IS IS 3 00..011 is s 13 Nicarina OJ Parathiaa (0, 0-bialhyL 0 p nitre* phenyl thlcphctphate) 0.1 Sab stance Pantachlaranaphthelane Pantachlarafhaaai Phasphcric aeib Phaapharua (yallew) Phaapharua pantachlarida Phaapharua pantcsulfida Picric aeib Pyraihrum Retenane Selenium cawpaunds (a* Sa) Sablum fluaraacatata (1010) Sablum hydracid* Strychnine Sulfuric add TEDP (tetraethyl dithlanepyra* phaaphata) TEPP (tatraathyl pyraphaaphera) Tallurium Tarry! (2,4J--trlnltraphawylamthyL nhramina) Thallium (salable campaunda) Thiram (tatramethyl thiuram dlauifida) Titanium dlaxid* Trlahlaranaphthalaaa Trinitratalwan* Uranium (aalubla caamaunba) (laseiuble caatpaunda) Vanadium (VjO, duct) (VjOj Kmw) Warfarin (3-- [a-ecetanylbencyB "4-- hydraaycautnarin) Yttrium Zln* add* frima* ZlmniiM ( Zr) TAIL! S - MINERAL AMO MOMMSTALLIC tMORCAM1C OUSTS Saha MPPCP Sa*. Sill** High (shave SOU fra* lilica) Medium (51* SOS fra* aiilee) Law (Maw SS fra* lilica) Crystchclitc (ab** SS) Silicat** Aabaataa Ml** s 20 SO s 20 s 20 Partiaad i Seagate** Tala Mlscallanaaua, including: Aluminum aside Calais* Dalamtt* Limastan* Sillaan aarbiba Mj par CuM o0..Ss 1 0.1 1 1 0.1 2 s 0.1 0.1 20.15 1 0.2 0.03 0.1 1J 0.1 s ISs 1.S 0.0S OJS 0J 0.1 0J 5 IS 5 MPPCF SO 20 20 SO so 5) 50 SO SO DUP 0960005 / Ata:J5fherle fiuat Control {continued): Vo fy r 4. All power shop equipment 'hell, when operated, have installed exhaust vtntilccion of sufficient capacity to renova dust particles at point of origin. Exhausted dust particles shall ba collected by an effective col c lector system which will r.ot allow, vent-off of dust * particles to tha atnosphsra. 5. Present controlled shop tleanliness programs shall be expanded. A vacuum elmr.tr should be used in lieu of brooa sweeping to remove lust particles from shop equipment work tables, litres, floors, etc. 6. A controlled materials handling program should be adopted to eliminate thcf.ission of dust; for example, when opening and removing materials from shipping cartons or in tha handling and nixing of asbestos cements. - F.esoiratorv Protection Severe or isolated conditions may require that respiratory protective devices be used. Consideration should oe made for adequate protection of puple 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., Modal Dustfoe 77 , with filter number EM 21 B-9" should be used. Tour usual cooperation is anticipated in administering these dust controls. CONSTRUCTION DIVISION /S/ K. E. Keupar Division Safety Superintendent c C DU? 0900989 ) S.L. 4013 11/8/71 December 20, 1971 (i/COWCMT WO. k If this comae under OSKA, we will also haws to eover ir. v 'arrangements with insulating contractors. feWi saaTftriii WCHT WO. 6 - txposure in a shop operation is soaewhst dlfforsnt from irking on pips linos in the field. Should we not aentloa the application this Standard in field work as well? J. UPHIHO. COHMEKT BT J. 3. tAUXIHO - PHOTO FR0DPCT3 WIDCHGTON ho. 7 - ftacommand that ihis standard not Oe imeuaa until the" new xoraas indicating the part covered by OSKA is in use. ccW&ht so. I - 2.30 - BBosnian' boxes or new insuiatloir should read, "opening boxes and stocking'bias froa new boxss of Insulation.". Old Hickory has aade repeated sampling tests of this bin stocking operation and found then over TLV Halts. Our safety rules are being changed to include this operation where dust respirators will be worn. oweht HO. 9 - 3.1 - This aay have to bo rewritten to haraoalse with eoaasnts above for 2.2b* )&mEKT HO. 10 - 3.4.1 This wetting down of insulation should carry a /caution te refrain froa wetting down hot lines whore: a) Water could be flashed off to vapor and cause burns; b) Water could fracture pipe or weldaents; c) Water could froeae out or slow dom process flow in "on stress" lines. ___ ^l^-^Puat respirators''are to be worn anyway when resowing 'hhi**gwT WO. 12 - 6.1.1 - Cash area group of insulators at Old Hickory are F!ked to tike at Hast one aaaple (not necessarily of 6 hra. duration) on different job each week. Nero aaaplea ere reguested when there are indications of any change taking plaee or new types of materials ere bains tried. This type of sampling provides us with new dsts in seme jobs end shows results of our efforts to improve dust control in other Jobe. . A. SIOMAH, coworrs >t r. t. u. soars - rex, FIB. . D_O_t_P_H_ECHT tjWttHT tibT 13 ensnao point 3.1.4 as follows: wGlass coating on block insulation reaueos asbestos ss a potential dust souree." Available or not available is of minor importance hero. \ XSOMKEN'T MO. U - Add to 3.2.2: "Consideration also must bo given to ^exapaoasurea of othhae: r personnel working in the area who are nee directly involved". The ium warning has been given in point 3*4.2. To our opinion. It applies here too. DUF 0901811 ;.Cf