Document b5yY5LxvaevGdR6d1V4ZeadZD

DOW CHEMICAL LAD SOLVENTS / EDC 1 NOISE SURVEY AN EXTENSIVE AREA NOISE SURVEY WAS COMPLETED IN THE SOLVENTS / EDC 1 :LANT IN 1990. THE 3RUEL * <JAR PRECISION SOUND LEVEL METER, tyre 2202, WAS USED tc CONDUCT THE STUDY OF NOISE LEVEL PROBLEMS IN OUR BlCCK. THE flETER WAS SET IN THE SLOW RESPONSE MODE USING THE "A" WEISHTING NETWORK. A -GOAL POINT OF THE SURVEY WAS TO INCLUDE HEAVY EQUIPMENT, HAND -DOLE, f.ND POWER TOOLS, AS THESE SOURCES PRODUCE VERY H23H LEVELS OF NOISE. THIS ROVED TO SE AN IMPORTANT PAR- OF THE SURVEY SINCE 9 OF THE iS READINGS VER 100 dB (A> PROVED TO SE -ROM THESE SOURCES. ALSC INCLUDED IN THE SURVEY ARE READINGS FROM MOST CF THE PUMP'S AND AL... Or THE COMPRESSOR AREA'S .COATED IN THE BLOCK. ALL OF THE READINSS GATHERED ARE LISTED IN ORDER OF SOUND LEVEL IN ECI5ELS AND PLOT PLANS ARE USED TO SHOW SPECIFIC HIGH NOISE AREAS. ALl. HIGH NCISE AREA'S WERE CHECKED FOR PROPER WARNING SIGNS AND ANY '-AT WERE MISSING OR NONLEGISLE WERE REPAIRED OR REPLACED. ALSO, SEVERAL SW AREA'S WERE INCLUDED IN THE SURVEY. THESE INCLUDE BOTH NEW PIECES CF Equipment <such as the ~in-fan exchangers) and. area's which were neglzc_ed N rHE PAS- OR BROUGHT TO OUR ATTENTION BY OPERA-IONS AND TECHNICAL SRSONNEL. IT MUST 3E NOTED T,HAr HIGH NCISE AREA'S ARE COMMUNICATED TO ALL DOW avi CONTRACT PERSONNEL ONCE A YEAR DURING THE INDUSTRIAL HYGIENE REVIEW, AL3C, F'HY ARE INSTRUCTED IN THE ='RCPER SELECTION, FIT, AND USE CF HEARING PROTECTION AT THE SAME "IMS. NEW EMPLOYEES ARE NOTIFIED OF HIG!- NCISE AREA'S AND PROPER HEARING PROTECTION SELECTION, FIT, AND USE WHEN -HEY ARE MIOC-RINA-'ED INTO THE BLOCK,, IN ADDT-ION, ALL EMPLOYEES ASSIGNED "0 r~;r WANT FOR A MINIMUM CF 1 YEAR HAVE AN AUDIOGRAM OCNE DURING TRIER ANNUAL -YSICALS. -HI3 HELPS A.YD THOSE EMPLOYEES WHD HAVE INCURRED NOISE INDUCED HEARING ..03S -D BE S DC I ALLY AWARE OF -i-SH NC ISE AREAS. 0" SPEC:.A_ INTEREST IE "HE 'RE51 IN THE *LAN7 "D CONTROL THE 1st SLAFTER ; v -HE NEW DRIER SKI D" AREA 0"E.v-:al NCISE EXPOSURE -EVSLS. THIS WORK, F 1990, CONSIDERABLY REDUCED NOISE _EVELE SEVERAL SCURCES IN '"HIS AREA EXCEEDED ",0:i: D.'A> PREVIOUS TC -HIS RCJE0-. ALL SOURCES NOW ARE 90 cBiA) OF CD. PRES VALLES ' CCN-INUOS NCI3: Ti. *I *utpi i rwr!, IMPAI DURATION PER DAY HOURS SOUND LEVEL C - AV t CF j .j/t Mi SCLiO -2VEL ds ;a; 120 1 l NUMBER PER DAY .0000 LOCO i.oo * AL.. "I ME FRAMES AND CORRESPONDING SOUND LEVELS ARE IN REFERENCE AN JNPRCTECTSD E AR. ** NO EXPOSURE -0 C CN7INUCUS NOISE IN EXCESS Or 90 M im' t A / 7 135 CDYTf WITHCU" HEARING aRD--ECTION. NC EXPOSURE TO I MPULSE / IMPACT NOISE IN EXCESS OF 140 ' \,L ,1 C- t M' ' PERM:!"TED WITHOU - 'EARING PROTECTION. DO 016433 CONFIDENTIAL . * ' , -`RCCESS EQUIPMENT SOUND LEVEL dB (A) P^w-.3 A C--14 A BOTTOMS CONTROL VALVE F-- L T/K P-102 A/E K--40 A WEST i<--40 B NEST P-101 A/3 F' jiU A 0-14 3 OVERHEAD CONTROL VALVE E-621 BOTTOM DECK P-67 C P-510 A/3 '<-520 GROUND LEVEL c-". :.C AE/BE o re* / PG / i2-620 "CP rf-"t vJ LC-D r--'1 dec:-;: P-71 AS/33 E-540 GROUND i_EVEL R-l 0 0L2 CONTROL VAL/E P-122 A/E "-47 D--2 C DUTp CONTROL VALVE OPEN ING/CUES INE `"'-"i Z/D E-ESA GROUND LSVEi_ i R-.1 C INLET c-s: ^ /c p rRJ" *' o, '' r. - p F--4 A/E C--1 C REFLUX CCNTRC- VA;,,,E D--E 0 _EVEL CGNTRCl.. VA,,/E 0-0 0 d ro _.^-- /7-J1.L 0 ."CRNARC "LOU CCN~R'OL VALVE "2/*3 P--360 A/B P " z "3 -- -- 1 ' E-tOO BC~"`DT DECK --T~Z/z' NS-40 F "0^-1: Z Ci ^.-40 8S se ss 88 87 87 87 87 37 87 87 86 36 86 36 36 30 36 CC 85 CT>wT 85 71 & 84 34 84 84 84 S3 Cj w qn 82 82 32 e: iC~j2 H1 ^n o- CD ^ 30 o0 30 30 79 79 HAND TCCL3 : INPACT NOISE; -iANTER ! " A K N E E ,"ATNEP 'ON HETAL: L \j i tiL.u___wr, j. :d c: ,, , ; o p : VIN G NAIL. 10:v XOCD CHISEd SOUND LEVEL dB(A) .116 106 4 O""7 95 016434 cNFroFMTjAL POWER "7CC._S DE SPENDER "IT SR INDER RCULAP SAL PE 0^'"* Ti:R . PE CLT--ER, PE CU"r'"ER , PE CUTTER, (FI BER DI SC ON METAL; (CJ "ING WOOD; A. w* (FAST SPEED) 3M. L3. (MED. SPEED) LG. (SLOW SPEED) HEAVY ECUIFMENT AND MACHINERY CHERRY RICHER (FULL THROTTLE; PORTABLE AIR COMPRESSOR (DOORS OPEN) WELD I NS MACHINE (FULL ",'HRP"TLE) CHERRY ICKER (IDLE) aE_DINE MACHINE ; IDLE, 'CRTABLE AIR COMPRESSOR ' DOORS CLOSED) TOWMOTCiJL3 MANL I vl I SC LS :vio "'_AV7 : V T\RCCV! -Vr 15' F--~E CNF " A3E ' -^i .EL A PC'" -,C.,, )_AD ! 7- i ' ""i w > t PANEL S A_.APM ; SOLVENTS) REDUNIR-A _EVEL ALAR''1 'SOLVENTS) ' AD I (vf; ..AD YEN- hCOD co-ipute ~C0/' :(L_;r':'D -AIN'rE; MCE SHOP (ECO 'v var:i;;vo t- ; n p , * " -, " ' EL CD\_ ACL ICON SOUND LEVEL dB(A 110 :os 107 95 95 90 85 SOUND LEVEL d B (A) 108 102 101 76 96 90 90 90 SOUND LEVEL dBCA) 115 96 95 90 92 22 80 75 72 at 53 `vE SIDE cy j ^ r ,2 SIDE Zj 'ft SIDE \!W SID E V SIDE - ILTER BLEED i 87 72 A 0*0112 ion 3*- 79 so 82 90 aa DO 01643S OONFTDENTIAI