Document 6byL3vRzvw8R0gyp41kDkvqv4

V wui'une, in c i, M adison and Red Bank Roads, C in c in n a ti, Ohio Source NuTone Incorporated, Madison and Hed Bank Roads, Cincinnati, Ohio Material: Air home particulate matter collected at two soldering operations* Date ox' Collections July 13, 1961 by J* Cholak, Ch.E. Required: Determination of concentration of lead in the air* Results Analysis Number 61A-4410 olA-4411 Oia -4414 61A-4412 SlA-4413 Description At soldering booth in Spot Welding Department of Building #1* General Air - 15 feet from welding booth in center of spot welding line. Same as 61A-4411 except sample taken 1 hour later. At automatic soldering machine in Electronics Intercom Department of Building #6. Breathing Zone - Behind operator In center of hand soldering bench near automatic soldering machine (Building c). Time 9*35 AM 9:45 AM 9:47 AM 9:51 AM 10*48 AM 11:00 AM 10:10 AM 10:20 AM 10:22 AM 10:52 AM m. Pb/M3 0.015 <0.002 <0.002 0.011 0.0X4 From The Kettering Laboratory in the Department of Preventive Medicine and Industrial Health, College of Medicine, University of Cincinnati, Cincinnati, Ohio KJ: 0018310 Reported: 7-17-61 July 13, 1955 Dr. Merton Wilson Medical Director NuTone, Inc. Madison and Red Bank Roads Cincinnati, Ohio Dear Doctor Wilson: A copy of the report dealing -with the inspection of your plant on July 11, 1955 is enclosed with this letter. The report also contains a proposal for an analytical survey which will establish the potential hazards involved in the operation of the plant. I trust that the material will he useful for your purposes. Very truly yours. JC :ma cc : Dr. R. A. Kehoe ' Enc J. Cholak 0018811 N19748.01 COHOSTS 0N A3 IBSremoa OT THE OF HU TONE* I!$C*a JUI# 11, Xim A number of the processes and operations in use at the plant of SuTone, Inc., Madison and Bed Bank Hoads, Cincinnati# Ohio, are recognized to be potentially hazardous to health- Occupations concerned with the cleaning, painting and polishing cf metal parts, particularly, are likely to cause workmen to ho exposed to harmful materials through direct contact or through inhalation of vapors or particulate material* The nature and extent of these hazards will depend upon the composition of the materials which are used, so that a list of the materials* commonly used in the plant would he helpful in establishing the significance of the hazards of operation* A preliminary inspection of the plant, on July 11, 1^55# indicated that the following operations should be scrutinized with some care from the aspect of potential hazard* 1 * The ^pot veldima operation where sparks are produced These .?parks are hazards to the eyes and may cau.se bum of the skin. The operation should he investigated to determine the best method for controlling the flight of the sparks, and consideration should be given to instituting a proper program for protecting the eyes of workmen in this and other areas of the plant. 2 ?pushing, grindln and buffing - (a) The grinding of braes tubes produces dust which contains lead. Therefore, the concentration of lead in the atmosphere of this area should he determined, and, if the results of such determinations justify the procedure, persons* employed at this operation should he examined by appropriate means to learn K o o l sa 12 whether excessive absorption of lead has occurred* (b) Buffing and polishing - Bust in the atmosphere should . / be analysed to deteraine its content of free crystalline silica, and if the findings mo indicate, X-ft&y examinations (chest) may be found to be advisable. fainting and lacquering - Any hazards which may arise here will depend on the nature of the pigments and thinner If lead pigaents are used, the concentration of lead in the atmosphere should be determined, and the group of spray painters should be examined to determine whether excessive absorption of lead has occurred* The spray booths in use should be checked for their efficiency in collecting the mist and vapors* In the lacquer-dip operation, a thinner of high volatility appears to produce excessive quantities of vapors Serious hazards appear to exist In this area, not only from the aspect of the exposure of workmen to the vapors, but also because of the danger of fire* l* * The degreasing, cleaning and anodising area should be investigated to detcmlne the concentrations of trichloroethylene, nitrogen dioxide (nitric acid), sulfuric acid and other possible toxic materials present in the atmosphere* The performance of the ventilating systems at the various tank should be investigated and improved if accessary* 5. The caustic dip operation used to strip paint from metal parts should be investigated with a view to Improving the ventilation and the safety of the operation* 6. The use of personal protective equipment should b investigated in relation to operations which cannot be controlled by ventilation or where there are significant opportunities for contact of the skin K 0018.313 of workmen with injurious material?*. 7. Consideration should also be given to the need for a preliminary survey of the noise levels in the metal stamping area* "uch a yurvey would show up the operations which are likely to cause damage to the auditory apparatus and would also point out any areas which may require further and more detailed investigation* 3. The assembly of chimes does not, in general, involve hazardous operations# but a considerable amount of soldering is done at a number of places. These locations should be Investigated and if there is evidence of potential hazard# the individuals so employed should be examined to determine the degree of their t?xposure to lead* Here information can be obtained an to the potential hazards involved in the operation of this plant by sampling and analysing the atmosphere in various areas * A screening survey of the entire plant can be completed in not more than 2 days at a cost not exceeding vloo per day. In addition to this charge# based on the actual time spent in the plant, there would-be a charge for the analysis of the samples collected* The cost of the analytical work would depend on the type and number of the analyses to he made and would range from )5 to *10 per sample depending on tho typo of analysis. A full report of the findings would include recoOTendatioas for the engineering and medical control of such hazards as may be found to exist* From the Kettering Laboratory in the Department of Preventive Medicine and Industrial Health# College of fedieine# University of Cincinnati, Cincinnati# chio Inspection and report by * 3. CholaJc , - c--> _j Tate: July 1^* 1955 Approved* Robert A. Kehee* M*D* Director K 0018814