Document rZVNO3LD3X6Q81LykdqOXZ00

FILE NAME: AMMCO (AMC) DATE: 1973 Feb 7 DOC#: AMC003 DOCUMENT DESCRIPTION: Letter with Internal Report on Asbestos Study r / National Loss Control Service Corporation Lang Greva. Illlnail 60049 Talapftona: 312-640-2400 February 7, 1973 Mr. Leonard Morrison Ammco Tool Company 2100 Commonwealth North Chicago, Illinois Dear Mr. Morrison: Enclosed is the report on the asbestos study conducted in your plant on January 30, 1973. I believe the report is in the general format that we discussed. If you have any questions concerning this report, please feel free to contact us. Let me thank you again for all of your help on the day of my visit. Sincerely yours. Environmental Consultant DMG/bls Enc. Environmental crai.ia'icn / Industrial Hy<jie',n LacorMory I Safety and ficciCfdi Control / Aleonct'Sm 6 ehavio'a1 Probfen Surveys H 001 8 .( 1 ) ASBESTOS STUDY FOR AMMCO TOOLS, INC. NORTH CHICAGO, ILLINOIS NATIONAL LOSS CONTROL SERVICE CORPORATION Long Grove, Illinois 60049 Telephone (312) 540-2400 H 0028 ( c NATIONAL LOSS CONTROL SERVICE CORPORATION ASBESTOS STUDY FOR AMMCO TOOLS, INC NORTH CHICAGO, ILLINOIS INTRODUCTION This report covers the results of an asbestos study conducted on January 30, 1973 to evaluate worker exposure to asbestos while operating the Ammco Model 8000 "Safe-Arc" Brake Shoe Grinder. SUMMARY OF RESULTS The results of this study indicate a worker operating the Model 8000 "Safe-Arc" Brake 'Shoe Grinder had an asbestos exposure within the excursion value specified by OSHA. Due to the normal intermittent operation of the grinder, the daily average asbestos exposure should be well within OSHA specifications. This should hold true for all similar Ammco grinders if they are operated following the manufacturer's recommendations, and are equipped with either the large or small bag dust collection system with the standard neck provided by the manufacturer. This study applies only to brake shoe grinders manufactured by Ammco. RECOMMENDATIONS None. EQUIPMENT AND STUDY PROCEDURES This study was conducted at the Ammco plant in North Chicago, Illinois. Mr. Leonard Morrison operated the grinder during all tests. Also present were Mr. Leo C. Bogaerts and Mr. Bruno Canale. The grinder was operated at 3450 rpm, the standard operating rate. The grinder was operated in accordance with the manu facturer^ recommended procedures. Asbestos samples were taken during use of both the large and small bag dust collec tion systems. The brake shoes were manufactured by Maremont and were Model #28-1994, bonded brake shoes. H 0019 ( f NATIONAL LOSS CONTROL SERVICE CORPORATION The asbestos fibers were collected on membrane filters. Air was drawn through the filters at a rate of 2.0 liters per minute. The top of the filter cassette was removed and the open face pointed downward. The air samples were taken'in the breathing zone of Leonard Morrison while he operated the grinder. Sampling times were selected to correspond with the time required for normal use of the grinder in completing a brake job. Asbestos counting of samples was done in the NATLSCO labora tory by viewing the samples under a phase contrast microscope and counting the fibers. A minimum of forty fields were counted for each sample. DISCUSSION OSHA has set a 8-hour time weighted average limit for asbestos not to exceed 5 fibers longer than 5 micrometers per cubic centimeter of air. No employee shall ,e exposed at any time to airborne concentrations of asbestos in excess of 10 fibers longer than 5 micrometers per cubic centimeter of air. The results of this study indicate that a worker operating the Ammco Model 8000 "Safe-Arc" Brake Shoe Grinder following the manufacturer's recommendations, and with either the large or small bag dust collection system with the standard neck, will not be exposed to asbestos concentrations exceeding the OSHA limits. Respectfully submitted, David M. Gioiello, Jr. Environmental Consultant H 0020 ( r NATIONAL LOSS CONTROL SERVICE CORPORATION ASBESTOS STUDY AMMCO TOOL COMPANY JANUARY 30, 1973 Description of Operation Sample Time Start/Stop Large bag, standard neck 4 shoes ground during study Breathing zone sample 9:20/9:23 Large bag, \ full, standard neck, 4 shoes ground Breathing zone sample 10:40/10:43 Large bag, standard neck 16 shoes ground Breathing zone sample 11:43/11:49 Concentration fibers/ml 2.2 5.1 3.26 H 0021 r NATIONALloss control SERVICE corporation ASBESTOS STUDY AMMCO TOOL COMPANY JANUARY 30, 1973 Description of Operation Sample Time Start/Stop Small bag, standard neck 4 shoes ground Breathing zone sample 9:10/9:13 Small bag, standard neck, motor stall, 1 set of shoes ground to bare metal Breathing zone sample 10:55/10:58 Concentration fibers/ml 3.6 5.1 H 0022 ( ( NATIONAL lossCONTROL SERVICE CORPORATION ASBESTOS STUDY AMMCO TOOL COMPANY JANUARY 30, 1973 Description of Operation Sample Time Start/Stop Prototype large dust collector, with disposable bag, 4 shoes ground, breathing zone sample 9:00/9:03 Prototype collector, 8 shoes destroyed, breathing zone sample , 11:13/11:28 Concentration fibers/ml 9.4 2.2 H 0023 n atio n al lo s s c o n tr o l service Corpo ratio n ASBESTOS STUDY AMMCO TOOL COMPANY JANUARY 30, 1973 Description of Operator Sample Time Start/Stop Small bag, standard neck 4 shoes ground Sample collected at the fill line of the bag, 1 inch from the bag itself, shoes ground for l*s minutes 10:27/10:30 Large bag, standard neck, 4 shoes ground Sample collected at the fill line of the bag, 1 inch from the bag itself, shoes ground for 1*5 minutes 10:33/10:36 Prototype large dust collector 4 shoes ground Sample collected one-half way up to top of bag, 2 inches from bag itself, shoes ground for 1*5 minutes ' 11:08/11:11 Concentration fibers/ml 15.2 50.2 2.2 H 0024 NATIONAL LOSS CONTROL SERVICE CORPORATION ASBESTOS STUDY AMMCO TOOL COMPANY JANUARY 30, 1973 Description of Operation Sample Time Start/Stop Large bag, experimental neck with hose clamp, 4 shoes ground Breathing zone sample 9:27/9:30 Small bag, experimental neck with hose clamp, 4 shoes ground Breathing zone sample 9:38/9:41 Concentration fibers/ml 35.4 5.1 H 0025 NATIONAL LOSS CONTROL s e r v ic e CORPORATION ASBESTOS STUDY AMMCO TOOL COMPANY JANUARY 30, 1973 Description of Operation Sample Time Start/Stop Large bag, experimental dust seal (external). 4 shoes ground Breathing zone sample 9:56/9:58:45 Standard bag, experimental dust seal (external) 4 shoes ground Breathing zone sample 10:14/10:17 Concentration fibers/ml 7.1 6.5 H 0026 NATIONAL LO SS CONTROL SERVICE CORPORATION ASBESTOS STUDY AMMCO TOOL COMPANY JANUARY 30, 1973 Description of Operation Sample Time Start/Stop Background sample taken on the table approximately in the middle of the room after several tests had been run 9:32/9:35 Concentration fibers/ml 0,7 Two filters subjected to the same handling were turned in as blanks. 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