Document XOy4VG2Z6d3oZ8BbMJQoDDe1J

FILE NAME Rogers Corporation ROG DATE 1987 DOC ROG054 DOCUMENT DESCRIPTION Environmental Engineering Report - Asbestos Exposure Monitoring ENVIRONMENTAL ENGINEERING REPORT Company Proprietary FILE NUMBER AFFECTED GROUP SUBJECT ACTION INFO REFER 87-3 Manchester REPORT DATE SURVEY DATE 6/2/87 28-5 Asbestos Exposure Monitoring 20000 GLP 2 Line RJMikulak MRBeauregard REQuaranto JPRispoli AEsposito LPMacVane WAHayes ADChesmer RFLee EMBulger Environmental Engineering Report Dated 4/20/87 Subject Asbestos Exposure Monitoring - File 87-1 PURPOSE This study was conducted asbestos exposure levels to on further evaluate the CLP 2 line while running 661 grade Although we have already established baseline data for asbestos exposure this additional monitoring will increase our confidence level and help to detect the problem areas that should be concentrated on to lower asbestos exposures Additionally exposure on Extruder 1 while running the 470 Kneaders asbestos and was sampled SUMMARY A total of six samples were obtained this survey 2 were from the Kneader during and 1 Extruder while grade were from the GLP 470 2 was running line 661 and four Grade Levels found on the GLP mill operator and screener extruder 1 operator and kneader operator were all below the OSHA PEL of 0.2 cc Exposure during the GLP premix operation once again exceeded the OSHA PEL for the duration of the mix Discussion of results listed in Table 1 including ventilation recommendations is included below One sample was voided as a result of improper filter preparation Monitored By TBGauthier Date 4/28 - 5/4/87 Analyzed By TBGauthier Date 4/28 - 5/4/87 Env Eng Mgr Appry William Whiteter Date 6-3-87 poe Rogers 01469 PROCEDURE Collection on AA Microscopy 37 mm filter loading Filter cassette .8 Am Analysis by used instead of 27 mm Phase Contrast due to expected RESULTS TABLE 1 m Asbestos Air Monitoring Data MMD Sample # Date Grade Employee Operation Sample Time Contaminant M872004 M872006 4/28/87 4/28/87 470 470 RBishop 183 m Ext 1 Operator EAnderson Kneaders 199 m . Asbestos Asbestos M872013 M872014 M872015 5/4/87 5/4/87 5/4/87 661 661 661 HFortier 187 m GLP 2 Screener RFranklin 161 m GLP 2 Operator ZDeVoe GLP 2 Premix 23 m Asbestos Asbestos Asbestos Concentration 0.06 cc 0.10 cc 0.07 cc 0.05 cc 0.8 cc OSHA Permissible Exposure Limit PEL Asbestos = 0.2 cc Action Level 0.1 cc cc ~ Fibers Centimeter of Air Rogers 01470 Sor Sor : 5pm 5pm -45 ~ ok Tear -45 oe PRO =| Sur wna a _ . an 3 } Ue Sh i ' a 8 USD a OOS) 48 A "yah rH won, +t Tibauthier Tibauthier LZvLO 5122187 yYBno-suaBy fh now now Pad :a oO Pa we : ON Pe os i i Laje/.oe HOE 125 ZLvlL0 UBnog-siaby SESww 3 LD me20] VRP ME me ~, me GdPAayr,r 75 \ Ser ycome Lo 2 Sy ~ wm < aon eee ee ccaeee i i eete J. ee i - By j | ' Lo aw we ae oe * 7 DISCUSSION GLP 2 Grade 661 Sample M872013 M872014 and M872015 represent employee exposures to asbestos while working on the GLP 2 line running grade 661 These results are consistent with those presented in an earlier asbestos report this year see Reference 1 The major problem area again appears to be the extent of exposure during the mixing operation The premix employee has been supplied and uses the appropriate respirator type for protection against asbestos Asbestos levels at the premix area appear to be dependent upon two things proper ventilation and employee handling procedures In earlier sampling results an exposure to the premix operator of .42 cc was reported while two batches of 661 was mixed see reference 1 sample MB71001 In this study sample MB72015 that same operation with a different operator resulted in an exposure of .8 cc while mixing one batch During collection of the latter data rework was added to the mix by use of a drum dump Ventilation in the GLP premix area could be significantly improved by enclosing the mix area The present system makes use of a capture hood system which is far less efficient that an enclosure For example if the existing hood had a total of 1,500 cfm supplied to it the velocity at 3 away would be approximately 30 fpm and at only 2 away the capture velocity would be 40 fpm OSHA recommends a minimum vel of 100 fpm for most contaminants A more adequate velocity for the asbestos loading operation would be 125 fpm in order to overcome the movement of the operator If we enclosed the premix area see Figure 1 a face velocity of 125 fpm could be established across the entire tank with 1,400 1,400 cfm Additionally the contaminant would be drawn away from the employee rather than perpendicular to him Figure 2 is would require by 50 another option for enclosing the less air ( 1,000 cfm but reduce operation the loading This area Both of these hoods would require some small engineering changes to the mixing tank We have not had a chance to measure exactly how much air is being drawn by the existing system however the same blower will probably be adequate More detailed ventilation design can provided if we're all in agreement to making a change in this direction Rogers 01473 EXTRUDER AND KNEADERS Sample s M872004 and M872006 represent employee exposures during Extruder # operation and Kneader loading of grade 470 asbestos Levels in these area's were below the OSHA PEL Grade 470 has been discontinued as of 5/87 The Kneader area should be thoroughly cleaned of asbestos by use of HEPA vacuuming or wet method Sampling will be performed after area is cleaned to determine asbestos levels in area Rogers 01474