Document 5b4Y79x9z9KdVMRqRVvBp4ZL4

ROCKDALt - In d u s tr ia l Hygiene Survey 1967-1973 PLAINTIFFS exhibit AL-458 411082 0435 rnty/irmR \ c SURVEYOR r lD A T E :<v1tfV t t t<]n M \ SURVEYOR I STATUS OFREMEDIAL ACTION Ident. Status 4 Oil vapor exhaust system installed in June. 6 Preliminary design for new skim room scheduled for completion by end of 1973* 15 Wheelabrator rebuilding now scheduled for completion by October, 1973- Rubber bumpers on overhead trolleys also to be installed by December, 1973- 16 Mufflers have been installed on air solenoid valves. Cast iron chutes to be rubber lined by December, 1973- 18 Personnel exposure to be eliminated by shift reassignment. Engineering approach to be developed by end of year. 20 Cleanout door on screw conveyor redesigned; to be installed in August, 1973 21 Preliminary design for discharge chute doors complete. RFA to be submitted in September, 1973* AGC:ak 7-30-73 411082 0439 b&AJ or jC3 ^* \/nO '^'i i.o-- W-- 411082 0440 IW) 2801 IP \ ZV\rO 2801IV \ DATE: Ma4c SURVEYOR BfrfrO Z80U.fr * DATE: ;M arcm 3c 1*113 SURVEYOR IT 0 C T T D 'A L E W O R K S rURVEYOR SWO 280Ufr DATE: Fet. a j f SURVEYOR ________ SfrfrO 280 Up DATE: FeA. SURVEYOR Status of Remedial Action Ident. k 12 13 15 17 18 20 25 30 Status Oil vapor exhaust system being installed; completion expected by end of June. New bag filters have since been installed. A baffled chute is to be designed and installed for trial by end of July. Equipment ordered for Wheelabrator revision; completion expected by end of August. Preliminary engineering for fume control to be completed during June. Personnel exposure to be eliminated by shift reassignment. Engineering approach to be developed in second half of 1973 with Pittsburgh Environmental Engineering. Improper replacement of cleanout door on screw conveyor causes leaks. Door seal and means of closure will be redesigned. Exhaust fume collector use not mandatory during brief (1-2 min.) engine operation. High vapor readings indicate need to replace trichloroethylene; will be done immediately. A. G. Clayton AGC:ak 5-21-73 411082 0447 \ ft *w fr U> V l / / D ATE: ..Iv l. :l ew zeou* I * S! I i ! .... SURVEYOR ^ <A() DATE: J a -1.31 SURVEYOR n ,i/i STATUS OF REMEDIAL ACTION Ident. 6 8 10 12 15 18 20 Status New Skim Room is being designed; frequent maintenance is now required. Revised work rules now require irmiediate cleanup when work is interrupted. No feasible control measures available; daily sweeping is standard procedure. New bag filters have been ordered. Equipment ordered for Wheelabrator revision; completion expected during third quarter. Initial engineering now in progress for dust collector on conveyor. Dust feeder air slide problems are affecting dust collection; replacement by screw feeder to be complete within next two weeks. A. G. Clayton ASC:ak 3-6-75 411082 0451 7*8-/^ \ 411082 0452 s >H 0SW5 I i ^V'J *"1 ce oX w STATUS OF REMEDIAL ACTION Ident. os Status Proposal for new skim room being developed; RFA to be submitted in near future 8 Tighter control practices for handling of mercury now being instituted 13 Experimental baffles being designed; instal lation to be complete during second quarter, 1973 15 Wheelabrator unit being redesigned for total enclosure; overhaul to be completed during second half of 1973 18 Initial work on dust collector for conveyor provided for in 1973 budget 20 iLy-d )/m/?5 Dust leaks have since been corrected by routine maintenance 411082 0456 IlJirfEYCS DATE: O c t . 34 <or>- SURVEYOR ^ },</} DATE: O tr. l* / im x^ 411082 0459 STATUS OF REMEDIAL ACTION Ident. Status 15 Wheelabrator modernization to include noise abatement. Completion may be delayed to second quarter, 1973 21 Automation of mixer floor was cancelled. Evaluation of other alternatives being made by Mechanical Engineering. 31 Engineering considering means of controlling flow of powder to drums automatically. A. G. Clayton AGC:ak 11-17-72 411082 0460 -&rr i&C.-- - ~_ V1 i ! 4 'V v. ./> * r m r iL s works SURVEYOR 411082 0462 DATE: Str. a l t ao f l i v SURVEYOR __ _ c ,w ^ DATE: 5 g * r . 3?. /O? SURVEYOR _ Uc 3 * * Vi i* y- 0 : w X1 iT,,f2U UJ*Mi (A U- ^"1 *U3 g. k* U* 2 TZ fel *< j oi 5 --T u VI fcj L >vVV-Ii o. .hi- -C<t H_ I I __ V :Q3i J1 J o 1 2 u. 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J <5 .4 2 * oc 2 K * %4 us cc - ' <1 ^ *7 ; l^h^?>CatO>Ji"7o7*3 VcrtI1 to - ?5 d Tu3>.0- ^-^ I7- t. ^ {Sj: a o o vi oc 4 eo 8 j ti 40 63 C 14 43 U > C3 CX o OX aj OJ m cvj 93 <3 f= o oo. 4= CO ll 43 aP St x oa OO CM LTN 0.1 4> a4 o) o o Sc X *s g p H 4> * V < 5 n o o H J 411082 0484 U r-4 a* 0 ^4 t. & o 4= CO CL ^3 O 43 43 <0 c *f4 fe 0o* o cc CO JC s 43 O s gw 43 t%p4 ^ pt 43 u 4> ^4 .-i 4^ uG> CC3 603 4d o C *c H43 OH C 43 X> a cc to H sa VO r- co Ct\ o OJ cvj 0J OJ 03 STATUS OF REMEDIAL ACTION Ident. Status Mechanical Engineering evaluating problems and possible courses of action. 15 Wheelabrator modernization to include noise abatement. Completion expected during first quarter, 1973* 18 Practical means of dust collection for conveyor being sought; included in 197^ capital expenditures forecast. 20 Mechanical and Process Engineering Departments attempting to correct operating problems in new dust collector system. A. G. Clayton AGC:ak 10-2^-72 411082 0465 a iv a STATUS OF REMEDIAL ACTION Ident. 4 Status Oil vapor exhaust system designed; to be installed by end of this year. 6 Mechanical Engineering evaluating problems and possible courses of action. 11 and 12 Problem being investigated; housekeeping and maintenance to be improved. 13 Possible use of an enclosed chute being evaluated. 15 Wheelabrator modernization to include noise abatement. Completion expected during first quarter, 1973* 18 Capital expenditure forecast for 197*+ includes money for dust collection system on conveyor. Practical means of dust collection still being sought. A. G. Clayton AGC:ak 9-18-72 411082 0469 DATE: im i. niiRVEYcn * Z> > ^r cCj ^o 7 t- f2f c5 c o 5^ Ov u 0o L- " 13 3 o CJ $ j' j? eC t* ^ V> V- 1 ' ?! So ; " .<=3 8 <? i *J 3 >**5--J3 *Z,, ?! 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V*i<* *^ *- Uj Ih *s 71 * *-4 CM *-v) ?k i* cj o v S?$ Ubi7I?'J 1ti ~ <IT 'T- ^3 oV J' uj-.iMiuj ^ c* 'X cC* C^T-li oIt, --<il u *<Xf 1<. *.* tu <3; Q* . o < CU *a Jo -.a ! -jh1, M-<x Q<C_yt -Xaif' H* * a -w*<3*co^ V> o , "h' Ord^ - o Tg2t 0' 7W ?3 , Ss'1 Ka! _/=> !iQ <50 `3 -J < O W Tsw ^1 i,sf-- - y 'W tJ J O* Ci w.*2TMiij *5s,j^!ij;;-5;] u " o3 * | c/ C^J-O ojva -.jii)oiOo o vi i a^ r< &h iUhh ^2aHJ3ts334j .a .0 co o c o o o o o o o oQ VJ5 o o <0 lu ej n o r-l P cu ?o CO +5 to mc4 JS tH 0) o 2^ s: & pw c CO nw f\J to c s*0 H c CD I c o H p *sCO o CO S ff ff d Xl o 6g sD rsr p a! a01 s I * ^3 a2ps^" ff a CO 4) PH CO 411082 0471 ff 4> H a *d n c u H f^f c x: o ff 43 2 po cc < o o 4> X CO a\ n cv CATE: J u W J / . i ' I n uoAaAUir - u. VJ ^ o *1 * u w> VO ^ <* ) us a *^ <i.K 1X x Vt UJ <20: t caet Q Co oo v> vi: > - c ru tc<t <tai O $$1 I 5.? r.iu S r 5 S *0 !: rtl ill Q Pi 0 Oo * rk-t c C * o ~5 -* V* OUf UTJ. 'Zr I i V V> j:Uvi W r, < ^r o VJ * * 1 O <*4 ji > >- u 0'5-c * *^ -* i 21 5 * k- 4. i ' i"3 IJ l vb a 5 ? u E j 0UJ t 1- *2 *^> <n 4 U5 r o < 0 o .* 0 ? n .x^ Qk ijl o Qit * Ui wI 4 *-> 4 1 Cf 4 1, So'o sIv- *Oj2r V joJt -*2'O 1 J 5a 53 *11 Q 0o O ^5 X .38 E- 23ra at r-i p (a30 Oa p z% o 0 o C) ^ o s p o X Z*& x 33 3 s 3 o 03 ^at CO O > 0e3 j ao -p u 0 P 0 Q p O 0 +> 0 Q <3 Cc o & <ac P0 2* 6"pc X 10 s s>4 o M o8. O -P os <\J OJ to OJ P(0 r4 oa xCO 0P 0 aCt ts,I* o V cU*) * o0 np0 O OJ ir\ i cv oU 0 0 S i-i u -P 0 o o r5J0*hS4 Hxc0>: H p 0 411082 0472 0 c o 5 &ja=o CO M p _a a^ CO o x: pm d Ppt* 0o4 XCOI COC JpZ 0 U 0 p O* 0 Pp 00 0 PS 0 c *o y *h d tg a 0 4-1 ctQ 0 4) HA 0 t. 0 C o0 p so co H\ o OJ OJ OJ m Status of Remedial Action Ident. Status k Control of cutting oil fumes to be attained with overhaul and automation of Loma Saw and oil supply system by end of 1972. 6 Revision of skim reclamation system postponed pending company development of improved system elsewhere. Mercury has since been removed from sink. Importance of thorough clean-up is being stressed to operators. 15 Wheelabrator modernization to include noise abatement. Completion expected during first quarter, 1973- 20 New dust collector being installed now. 30 Dirty solvent is being replaced more frequently to reduce excessive vaporization caused by buildup of grease in the solvent. A. G. Clayton AGC:ak 8-18-72 411082 0473 \ 2$Lui, 411082 0474 t JDATE: u l y 3. A H v - DATE: Jo u V 3 STATUS OF REMEDIAL ACTION Ident. 2 Oz' 11 15 17 18 20 21 50 31 Status Filter box was leaking; has since been replaced. Revision of skim reclamation system postponed pending company development of improved system elsewhere. Housekeeping has been improved since survey. Wheelabrator modernization to include noise abatement. Completion expected during first quarter, 1973- Request submitted to Maintenance Department to check operation of exhaust system dampers. Carbon cleaning machine modernization is planned in 1973; some improvement expected in exhaust system. New dust collector for butt crusher and related equipment to be installed this quarter. Alternative improvements to fume collection system being considered by Mechanical Engineering. High vapor levels result from buildup of grease in solvent. Dirty solvent will be replaced more frequently to minimize vaporization. Engineering Work Order in process to reduce dusting in packout art Septic tank cleaned out soon after survey. A. G. Clayton AGC:ak 7-27-72 411082 0478 V I VI 'C "T I- s^ 1& < * r~ : <x 3 ^ , 0 u. `x u 4 !2 | j y. Cj l} C i 4 *1. 5 O 7 U. w O 71 oc -SI I XK 7 au Q s* J o n>- .*- $?i*3 R:S wc-7 ! 4 r nia j 5 73 ~ 10 G Q 4 24 V C ^o7 u? * 1 i! 01 , 4 *0 `o Vi ;4v.Sio <t <t t 0 u O 3. <6 1u t l w o 7 7> o t-* < >51'; 3 ^ 7 ' jJ: vi! Q O 2 7 ^ X < !.i , 4 $ u_`i. 0 Z C .y a a ; 3 <l 73 o % oc n 4 U(J $5 1 u<r tI 7 tO ^ c <7 <g 5 _ rl 4 a -< * ' -. 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Vl > 0 W< T <t VI 5V V l 3^ k 3^ <3 C O y: W 3 aj ? wS V <5 ' J 5 1 l ,*- f-t yl 5 icj 3 * t: i- O'* , <5 ii*! aT w v>o 3* tr i * v3 >:S-= u*3 ft f C o <s ? V e 5 u O a Sr .O'* o a 2" 7^* 5 3* hi <0 2<3 . J.S5 o ft t 1 *U ui * i* 1 ii - f5 c o S 35, 2 ? i; CX Q t>ii1 , |iC|` p Qvt Q Oc <J3 o 0 0 Q3 ca oo Qo V5 ^5 <8 J38 32 mO H -a3* 44U>3 fid o a o s 0 0 soo V <5 <c5 IT XX l< O s Os I5 0 J1 t* <8 3 u go 2*a 4> 9^ O C 4> 3 oo 4> O V +> *p o & CJ & & CJ I *3 5 O g <0 p ft0) *H (4 e o w 4 &C u > P i: OSXi tI s* m CM ft) e is Ck o 0 u 0 CQc cft) o u if s & u CM 1A CM o bo ac f* 4) 4 o X u > JZ o u 411082 0481 k s C 2 0 ?fr o s o p Oa (ft4) ss- H o c4 ft) aB JoB o CO P ca ou i Pft o4Cft)) u pc 4) Sg 4S *o V *H P JS o 0 cte) n <i V <h ce; H C ft) XX IS; NO CM GO CM CM On CM COO STATUS OF REMEDIAL ACTION Ident. Status b Control of cutting oil fumes to be attained with overhaul and automation of Loma saw and oil supply system by end of 1972. o Revision of skim reclamation system postponed pending company development of improved system elsewhere. 15 Alternative courses of action under consideration by Mechanical Engineering; none selected as yet. 15 Wheelabrator modernization to include noise abatement. Completion expected during first quarter, 1975* 18 Carbon cleaning machine modernization is planned; improvement expected in exhaust system. 50 Cause for high reading is being investigated. Results will determine corrective action needed. A. G. Clayton AGC:ak 7-12-72 411082 0482 V '7 411082 0483 c. fcc>l 0 E datej i;i m ?v- c c SURVEYOR / I ^DATE: il l.j /<?!%- SURVEYOR STATUS OF REMEDIAL ACTION Ident. Status 1 Revisions in the Loma saw and cutting oil supply system by the end of 1972 are planned which will correct the problem. Mercury has since been cleaned from sink. 9 New covers on order, expected delivery in July or August. Effort being made to improve placement of covers. 15 Various possible remedies being considered by Mechanical Engineering. 15 Wheelabrator modernization to include noise abatement. Completion expected during first quarter, 1973* 20 New dust collector for butt crusher and related equipment to be installed during 3rd quarter, 1972. 21 Alternative corrective measures being considered to improve fume collection efficiency. AGC:ak 5-12-72 411082 0487 y rnfr-' 411082 0488 rinvpvnt> /'iJ /. i) a H Q H > 9 m Vi W oS K :* M wU J < X a Q a Vi o< oM a e* m D Q a 1: l? << l * fcj Vi 4V ? j J23 i 0 2 *j ^ ; 2 - fco A"* w3V U Cl i .2 , V. i <5 t<x z * k * 7 i r Q O Q 2 o *4 ) ' o '* o. 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" X * UJ l/> <X * J 1 X CO -3 t! -* ' *s b 4 t w 5 ti : 41 0f ^ ^ i 1 VTl a 8 <^5 o ` 00 s P P 2 a 0 ^4 P r0-1 H0 1 30 30 ^-4 >> H0 O 0 30 <H 30 4 > <> i s *4 i U i4*!1 +i> o o 8 0 P0 00 ^4 P o1 K c 0 H P0 1 to 6 c4 c 0C M 0 w-i S3 P a * 1 4J to <3 to c-< d 8 a i H0 S co ? p0 o4 p 0 a c b ss> S' H d p 41 2 0 XI o g JS 3 -2 OS ti St a| a 3 0 r* s| | | rv H vo^ H k X a ? <1 J* ?4 "-S4 00 8 a .a 00 u < h s ? m*4 c J? 2S ^i 41 su 1 1- CL f5 i? t r< a5 o - | =2J ^ i t <o C JJ ? -* ej S i**s i C?o j j o-^l 41 11 X ;f J x } < 2i-C5j HX5 ^ " in *1 0 p *u i ^ \r, .A \rt X* .1 4 > < |ls 2 J* o 5l J?0 J '^ 2 *a J ^ ON j i - m t V1 a uv J <2 g " 5 1 5S o^ir <L t 'i o i sfli* * i 0 1 x is" ` ; *^ x VV4, 3 5v^>c ci 5tJ k -,u t Sx 4'*^ T l- on s 1 Xy a 0 iS Q Vj if a a (4 0 0H r4 p 0O 03 30 0p ar4 > >a H0 0 3 O H 3 0 P > > 0 P O a a1 4 f00l o 0 i-4 0 cu 5 cu 2^ 8 0 *-4 OM p as JS P0 a P1-0 3o< 1 411 082 0-490 V ^4 0 s 8? h *-4 -j a ^ 4.2 <4 K ,8 0 r*4 Im 4 s 4 z CO Os | w H SURVEYOR p ^ DATE: SURVEYOR io 1 * o O> V t*S Q<at ls - ^. 7U uy y X* i y rzl j^ Ta ;8 Z * * ^ *> '" H11 O^ --""J J4 0 *- t w o tw < c7 >j \4 a 0 - T1 *. o ;i > t ' i: 4 7U --* J o Uj -$i 0 u^ i5 s v\ V 1 6v * -ii <4>,X1n tj^lfs-rs- Jj-1 <t ^ * o C* 0 * X U x o z: M *us Q-ao- y 4 1 iti. (- 5? o-J? ''M Q- * ^e-l ui <2 S-? o <X 4 o *3 fi ? * 7 0 t it <* O i ts j*Jr* 50 (Q ^ C ^ <3 VI ** Sill vt i t3S3*3" c* X *h ls<5 2<* 11* *f8c ^C'u *5 TC 1it H 3 llt ?d5-S* "7 >* *' t co jsi 4- |* + * s$ itjO *5 yx 4 aO 3H 4 9 3 7 i"^ 2^ 9 , l 5t3 fiil t c -"Ol O *< o o o C3 <v5 ac oo o V5 3 2 41 >c^ & r-40 4 O 3 4* 5: a o <1 -8 O o <3 a0 V5 X f4 oo CD e s 33 i fe CB 4> S 00 2o 4> O0 O 0 P s:b >5 0 Q ~7 0 y c % ti 4! ft ti 1a0 S8 5 IP 0 S >5s OX ai 01 <n (\f 0 au o c 0c CQ 0 o u 0 Pc kl 00 oo csj ITN CM Z Ov4 <o a o JZ CO h 4* 0V r-4 cq VO ; CM ^ 0 g y 1 p o-- u si 8g w4 0c <0 H zC 0 Is 335 40> u X o u h 411082 0491 a. oO J3 CO .^3 4* 0U O* 0 JS o 0 f0fi 00 8 6C A && 0c0v fT\ CM ocn -p a 49 < STATUS OF REMEDIAL ACTION Ident. k 6 8 13 15 18 20 21 Revisions in the system by end of 1972 should correct the problem. New skim reclamation system being developed elsewhere; improvement in exhaust to be incorporated. Mercury has since been cleaned up. Various possible remedies being considered. Part of plant-wide noise control program being developed by Engineering Department. Carbon cleaning machine modernization is planned; improvement expected in exhaust system. New dust collector to be installed by end of June for butt crusher and related equipment. Current revisions to mix transfer equipment expected to alleviate spillage, which is apparent source of fumes. A. G. Clayton rjinvtvm w ('.v tfl n.iJ>0 SURVEYOR UI *7 i* js t ON k5 u: 0*0 t- o 7 j* A tl fi V,^ I- '4* TI- Vi :o ; *7 ;a '4 Joi O 2 < d o --4 +> Q CB 4> 3 r-( d c ea > 4; U Q 0 0 v5 o 0 0 X 1 **o UJ <1 *9 <* * 3 *s "J > JJ aj '< 2 *1 2 * I- ? o, o Q* u vt *7tf !;|, 7 U. >1 !Q X .1 il to ti J *7 v> S v% <3 o Vi VI W^ - rt S^ r ^t ti ^ r -? VI " Q 0 O o v2 <55 Ja *r2 ^ ? *f^ >u k ^4 t ^a ^ *u*.'.5 -ti Q? * t T3 ^u 3O"k- V TQ r n: 1i ol Cx ^1 4l V3i c 0 0 CD V J Q4 J3 J1 ?* vO * * ta 7^ 1 ~.*i \u *4 I 5* v3 'ii O* * S >: T * t, * ^ -* Va X Si ^< s- r? * a 7 12 f^a * .* j V2 St l v*3 J 1 7 dc 2 w sj <u.j V <C ? >s a 4w -s; U I- a i. <j 4 - <Jt *> ' -x v Va 'a3 i " 2 Ul . v ?Y< sj O70"3 ^ * ^ q J1 ij<*-T 11 n >',o J T* *7 t < * " d I v I<C 22'o 3 * a <J %o^ ^ a " T i V) 5?2^ lJ ^O i > a? *2 v- "a uU-. \ zt'St 2 5 h" k + . q!^ >U .'V:' - 11X i > aa S3 us C t l - I ;c <J ? rt ii*I*7 ii" t2;u jt " 2 t. 5? 5 SSt x vo^VV ca 0 <s r* 4J tO <5* S<3 04 60 wc *T3 S C 3 e o H J e a8 K 2 S> 9 *d 3 o *8 3 ^5 VO H *CO 1 4 a 5: s I 43o>+2 4) V. 9 ha a P r4-41 9 9f 4 C O ^fc-g41 I? e ?2c C l< oP 3o U 4) CJ w 9 *4 Ii GO fN j Ol 411082 0404 DATE JURVEYOR V? nc0 ~T ^ Pt 2* i> y vkj. v^tj ^t*i T5 O5 UTC. U*j - Ml << s 0t 7^ 3 -5 il* ri * M 3 uo J -I M ^ 0 y>> 1^ Z> } U. * -o 5 ^ Vu iQn5 Uo >,Vl--i<3t, ot o .j* ""1 *o> g ?'A5u* C o 4J S ^ w> 3 c4(c0) o to o o 0o oo ** u7. x>- 'm*T t ?"3 C -1h. tg- WX* 0^0 \2s t^>' j^ 54- sj 5 w- oK *7 wZ d o^ >i*&s? j h iz O lly I' *"J tV; l4,J *s 5^ *-V-> C> , M`yl 93*t* o 5^ 9 0.. ^ui Qv5uUQ..T c o0 o :f0cfol*M4O> >c 9 E* U o r4 *OP 9O CO *P a ti .J 9 o s p o 0o o >1 tl o CD c 02 lh 1c XI o~ ~J J *-J?*.<==: S <3 if*70 3 O? 5?5 C oO 7 r : *7 ^ T zn < cr z <o c o Q^ m C !`5i Uf . ^ a *5 ^ <1 w3 - h ^1 J> v9 'w wa **^ ri c ^ U V*Vi. *V*'j ^ -S * 7 n o*j *v^t>?3z*^u, ^LQ92i>JO^O it S t T - <w Cu i 3-1 ^ -S5^ 3 * ?- q: l5 2=* Qoo o0o o o0 o 8 c o cb ^5 x O J5 JJ *2 i 9 6* 2* <0 v 9 CQ O 3 00 9^ ao >< ou *p o 4 -P 0 Cl U c <* wj c op *p 0 8 j fe o . e> l". h us o cc a a v i< (V, OJ H a 0 u o0 iZ c C0 0 o c 0 o CM IA CM o^ 0 5(--< Ac> X3 r-4 c* $ o s o o 2a p a t. 8 0 ? a o JZ CO J= *9 OM C0 S2 411082 0495 Joo2* ao: CO JZ p C0L 0u 00 5 CC 0 o 0 -<oH StO & 0 ll 0c 0 U NO CM CO CM CM rr\ CM Ocn I STATUS OF REMEDIAL ACTION Due to delays in obtaining the information, the status of remedial action will be reported with the March survey, which will be distributed within approximately a week. In order to avoid future delays in distribution of this report, I request that department heads and others having responsibility for operation and maintenance of the areas covered herein keep me informed of any plans or progress toward solving the problems noted. A. G. CLAYTON AGC:ak 4-11-72 \ 411082 0496 Drta Crurhir.f; VLisual-Sroke Tube w o O Cl- |2 ! C I^= jig ! ft 50 <g 2 5 o <9 ) ;w o ; 4M9 1 \%X *1 3 !a>* O 4<H99- 3h2><+ 3 d ;i CK* n <+ OO OC Cft C+ 01 c+ c cc II- e i <-* *3 ` r- ;< s |M 9+ c+ o 3 1O 1.1 *dO31' .; *0n I' J? wa wa 9 (9 05 < 4 sr C s3 M O* - O doM* *Co1 >1 3- c+ O 3 3 Oq 3 00 O cco e+ V 5? I 01 t' cD d oi no c3 IS d h- O t Csr |toc# cr> ?> 0 r, > > s e O') o o o ji ? 0 o fot 2_tA : ? ni*. uU cz; oc w' "* * * c r> &-> c" fL_-&*4>r: *? io z ^ 71 i r -> rir51? *H** - n Pi? >i 3r ?*rHa O*% '*-4 l ft *ft 2>> *.* Aw rn o *E ^ r- i*. 5 55 ?* t s> r- a * c* ?-!. 5z p . . Pi 5 CA 21 & < cc> * fc% ' -i ft rr *<"- " = IS- -j * f' i **- "J* i CN i *x ^> ?* rf P=> 12 ^ 2.1A 5~J ?c n > "I S5 v -i i. o. _ ` ZO ;o oc <T (A o2^ *- 1 r |G> r * i> x2 o I?* 5 nt ^ o*. cy\. H *n rr t' 1 s wTi 1; W1 CH ft*r ir sr Oa ^5 ? Tl i >C Pi o? s Xo 5 2t^ r n5 f^t C1 A ii W 0 0 ft 00 <to CH ca+ COct ^-* O 3 cF ro e& . C<. t> CA 1 s> r r t* J o c 4 s^ ?a 4^ *o *9 ? og o? 5 *- - .9 m J. * g> P J iL n4 ft s 411082 0498 DATE SURVEYOR \ DATE: JA.J. S U R V E Y O R r\A / _ Statig Jtl3tPa&lA. Action Ident. 2 Status Design modifications to eliminate leaks are planned. Door arch on Furnace 8 is scheduled to be repaired. 4 Revisions in the system by July 1 should correct the problem. 6 Further adjustment of dampers to balance exhaust are scheduled. 15 Repair of leaking air cylinders was scheduled during February. 18 Exhaust hood daiqper to be adjusted. Please update these statements, if appropriate. A. G. Clayton AGC:ak 2-29-78 s u r v e y o r _________ CJtfA DATE: SURVEYOR DATE SURVEYOR STATUS OF REMEDIAL ACTION Ident. 2 4 6 13 15 18 25 Status Design modifications are planned to eliminate leaks. Revisions in the system by July 1 should correct the problem. Dampers have since been adjusted to balance exhaust between pit and main hood. No action planned at present. Elimination of bolt-up and unbolting stations should improve noise levels somewhat. Repair of leaking air cylinders would also help. Exhaust hood damper to be adjusted. No practical exhaust system available for conveyor. Respirators available to workers. Exhaust system will be installed. AGC:ak 2-8-72 * 411032 0504 ruRVBYon DATE: SURVEYOR ,, ,,n ! <o-*> VIOU : s? ; <n i!' 3ffIPttt T93 aa ST 3 ao OO IO ro cx> ft ft33 3 O 2 C3 aH** Osr 3 *9 3 D f*0d1t*o>o 3* amo *SHf<tT- OSih---' a o a d <ft1 3ft O*1 O ICO\ W ffdtt n *C3OoQ 6 ft ft o* z vIsOt ro no oa 1 i O0fQt 3dftOft W *3ff1tt *3Oo* uro> f-fnt CD a o z Xn0ft) 'o3fO<<t *9d1 &o a ?? nft fht CD OdOaacft+t oddft O*1 9 OO pftr Co ff * o 01 7ft? fCt c9 srC3 *-3 C ff * %3 O 3 aa 8 *< 5d* 5n ft fdt* fCMt On H C yO ;v ?ft oc i*CD o*5 o6 D CD o o& CD 8 ?! < r* *? 1 X. ft IA ^t ' " 2l L s0 *S e a. >. r1 ?* 5? e.*? X im n r* f& L> !>!?? 5r(5I**jJj!2f to* rtf- iJrS4 * X Sr & 1it*. i> *AJl ?Sh 9 lr? r ** *$ L*. ffl 5 O I S.5-S 3 n* ** ?d> 5? a. !* < oo HI r??& fit, i? ^rft d? * ?ft >E*V on ?> o, o 5n $*? :*Sft ffrftt fc 1 J?S - IT ^ r3? >c, *r *n* g? n* - vi ?*i -i F i r * 1 p .P*l A?313 >rrr^ > IJ a ^ P w -i r 5 ? 1S *>S ^t>4 :?sir X ia ft r ? ^ r-\i a n <; *s-Sf1tJ4Aop?'i. fX2t _ B>> S-. n t1J F<* st ? jw J o .t . S*> ' kl'XH9 3 fn(tt r> y$y o ot & 3M 8 g d* O a ? 411082 0508 DATE SURVEYOR STATUS OF RQ-EDIAL ACTIO? Heat. Status 6 Balancing of dangers between pit and ,:.pin exhaust hoods should imcrove fume rer-.oval. 15 Noise reduction expected when welded stub connection system installed (RFA approved). 17 Collection system installation was completed about midDecember. 1-: No practical dust collection system available. Respirators available but not mandatory. J-h exhaust hood has since been repaired. 75 RFA for new garage with exhaust system is being prepared. A .G *C. January 4 , 1972 411082 0509 I I CV G \r E$ i4 //o res: rll Irvj-t. _xl j ''<- t LI* , C-'t-. x-jT V-, ,r ' J lO " *;0 vVy'-'K (- Ocr. :$ /0 7 f /) rX_ ic '\ t c---J ^u. i-7vCI yL/c (' -- i CL^ * A-*- trt'-'. ^ '*aCi,'. '-`j JJ1 ( ,vvy f-~V L<v^'-<:--- ,1*. \. -.<r -r\ A.vct i< . --. . ... r T' ' 0.*,-,Cw*!- -r /: j j\.c rr r ell*. ->,. *.-L-iJt ,Jt ./ f '4- j.,?* C.*^''***'L+40*-''* xJ' -WWt-*i- C, --*t'U4U^V>,V, X 411082 0513 November 17, 1971 SEATOS OF REMEDIAL ACTION Iaent. 6 15 17 15 ) 19 ) 20 22 Status Extensive revision of pit exhaust system needed; no engineering work requested as yet. Noise reduction expected when welded stub connection system in stalled (RFA approved). Collection system to be installed by early December. No practical dust collection systems available. Respirators available but not mandatory. Exhaust installed on crusher; dust collection system to be added early in 1972. Missing section of exhaust duct to be installed in very near future. \ 411082 0514 h' ,-T * 3 /?/ X 411082 0515 FROM A. G. CLAYTON ROCKDALE WORKS TO MEMORANDUM November 1, 1971 CONFIDENTIAL RE: INDUSTRIAL HYGIENE SURVEYS Evaluation of areas Inspected and application of Industrial Hygiene surveys are being somewhat revised . We Intend to continue pointing out problems but also want to indicate corrective measures being taken. We have re-evaluated criteria for Poor ratings in light of Occupational Safety and Health Act standards. Some areas not directly affecting occupational health and safety will be dropped from the survey report. The September survey wae completed before these changes were made. The revisions will be reflected in the October survey. Those of you who are responsible for operation or maintenance of areas rated Fair or Poor are requested to attach a note stating what remedial action is under way. These will be summarized in a statement attached to the.following month's report to show that we are not ignoring our problems. Poor ratings will appear only when OSHA standards are unquestionably being violated. Examples would be chlorine detected in excess of 1.0 ppm or heavy carbon dust or pitch fumes obviously exceeding the Threshold Lim't Value. At the same time, stronger emphasis should be put on upgrading situations rated Fair, since they are the ones that generally cause complaints and potentially may lead to an OSHA inspection. The dump and sewage plant will be eliminated from the report. since they have no direct effect on the working environment. Both will continue to be inspected. The Engineering Manager will be notified of conditions at the dump requiring attention A separate report on the sewage plant inspection will be routed to those directly concerned. Hopefully, these changes will enable the survey to be less an irritant to some and more an aid to all in pinpointing and solving our environmental problems. A. G. CLAYTON cc: T. B. Bonney - Pittsburgh Copies routed to: (l) H. F. Chrisco G. W. Hutton H. A. Bower E. B. Parker J. H. Goldman G. J. Myers D. M. Nystrom A. E. Menke A. G. Clayton 0 ALCOA (2) J. H. Greene H. D. Franklin D. D. McGregor J. D. Shinn A. G. Clayton C. H. Ross, Jr 411082 0516 * 43) II(V OOM A. G. CLAYTON ROCKDALE WORKS IL MR. T. B. BONNEY HEALTH AND ENVIRONMENT DEPARTMENT PITTSBURGH OFFICE November 1, 1971 RE: INDUSTRIAL HYGIENE SURVEYS Thank you for your constructive comments, via both Mr. Backenstose and your memo of August 9- I would like to answer some of the questions in your memo. It is my understanding that you and Mr. Semken established the locations, format, and evaluation criteria some years ago. We have heretofore been reluctant to change these, but are now doing so at your suggestion. Since the survey is only a spot-check of conditions, we make no claim of repre sentative determination of contaminants (e.g. detector tube readings of Clg in the Ingot Plant). However, a review of several months'surveys should indicate representative conditions. In the past, we arbitrarily assigned Poor ratings where measured or subjectively estimated contaminant levels reached or exceeded 5<yf> of the TLV. While noise levels cannot be subjectively rated in decibels, the surveyor can note whether any significant change has occurred from previously measured levels. Perhaps, in areas where noise levels are normally high, the rating should be based on the proportion of men wearing ear protection. Several areas (potlining-mixer area, electrode cleaning, butt unloading and crushing, and mixer-to-press conveyor, for example) will be improved by engineering changes, RFA's for which have been written. Since the wheels of progress sometimes turn slowly, improvement in their ratings are not soon to be expected. The state ment of remedial action to be added to future surveys will, I hope, document our corrective program. We will welcome any further comments you may have regarding the surveys. A. G. CLAYTON AGC:S 0 ALCOA 411082 0517 if a( v:> * *- VI M I > X D 14 X M H o p* X TO9 js s, < M c o X H Q) D Q X o c Q oe o0 c 3 c oo o m G& I O0 4* 0C oo o0 "8 ' Us < h o2L tu m 4oCto* iHtoc MA 0o c I8op00 4f4l TJ - t Js j ja uJ 'J oc c 0 <2 <J) 0osb c .X0a) a e-< H ft) S S> 3 >uo0 aC*X. -f 4-1 c 0a u 5! 3 uoo. P CO a t> 2 00 40a* S3 00 6 a *3 , VW*. CO Q+o3> A--tO*i c pP.i a c0hO3 to tcH s-s ?C 33 tct 4 4a> o x oH u A tf, MO Q< j Ul<j ' XQ n5 *0 i* Is *i * 5 0 wS 4> 1> i v $ ! Q VJ 7 5 H1 i li Zi Jur *w O?S, wQ <rx 4^ i TC ; uX Qt ` ] i _J p Sis < 4 T tj iu ti a i -5 ^ i- ^ * ** i33 Q -5 ^ S'5 ; 2 t- t<S .. ^5^ Q Q C Q 0 O 00 ^5 <43 <4 X0a O0(>4 c *3 <D & 4Oa> a H <8 4, 40* 0 g 0 3 OP< >> y 0uo 4* to s3 co 2 4> 4) xd> CO (04 4> oC G0O IP 2 4U3 a o *o (0 3>4 u AO0 p s A+> & 33 411082 0518 suRvaca s t o v e o r/ I 411082 0522 r- 01 M H g > U > es a to N X M M o > 3 < H Ci H n a o as H a *t * -^ * < a w - l 0 v *U <C Q <* <d T < tt -? S .* ~> i*. _X (1 ? 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O <u1 I >0i o>c o H ^5u *45*. C a2 -2 5 7 u S v>> 0a * 1 Z> INc. V- 5o o Ui < 0 3i " * Vu o C y Vi) Z 0 xa 5* 3ii o 0 X) 3 e* p o po 0 p a P CO 2 o* o j= CO f-4 0 p c0 s41 to &0 O ic >o r t> cSi V - w 11 1^."A ? *t it "g* ^ i i 2 u Ji i uJv? J Q.'C^ ^T 1*S 5V k5 - 0 t; X4.I^^Oi <: O! : :* 5 ^ o i *j t; ^ > r-^ 0t"t*x*- J <C 4. W ti < T w . 51" c $id io \ix* C < Or 1 1 $J!'J 5ft ^ v2 '5 * >v%- . W u a? i 1_S? c 00 V5 o oc a c o o i 8 C o e >> > o ou 0 c s 0 c 4> CO X0) o x> 3 0H X) 0 P 3 H 8 3 Wi 2ft 3 0 cd v 3 Jd (0 O SS 0O O -P c o p o p o 4) P &> >H MF. $ <0 o Ui V iO-l B> JOH= Xt>> o o U 4^ HW rA to c Bc ? 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O 4H082 0555 soKm rn o r~ c~ o; o *j O w H 2 * M > Ci S w M 2 W *-< o > 4 < * C H to D Q 2 8 oe: a 8 0 > a 3 CO w `4 W M u > J < H CS H to D Q se M g Oci i* 3 S4L>S2_ SOHVEfCR O CONFIDENTIAL 411082 0558 ROCKDALE WORKS IN D U S T R IA L H Y G IE N E S U R V E Y DATE: /Voi/, ' aUj -^ "5 o b't b*rt ui, ^i 4aha4 aa X 0 < , ttl Vi 0 *yv> "- S > <j 2 r> yj ^d c'Ao ^ -< ^ < r T --1 <o *n- s'oaS v'"' 1:1 *< A <*an 1r a 0 <* > ^2 O re r+aHj a3a x G0* aQ 0 a Q Q ra9aH O O w> o d0 5Pa3 {3 0H Pa rH #--H r9aH M> 33 <rH0 CO >> V aa a pa * eo PQ oa *' V ?1t*iV*; Vf* ' 4d0H4 a i 8 0 00 1 j(C0 U41 23 2 i .Pc to <3,3 *wcP o 8 H c 3 4) d a M aas kj ~T a4 <o aVJJ VI s J as<4 K UJ * o o01 xu> VI j 4 C u. wj o Q *~ !4 > VI J ?> *(>1 tl *7 <t n - VI 7D <O *^ I ^ J 5 IL o aJ J ^ VV-I a X I~ V/l Z1 1/3 ^ aw a4 <1 s K^ U Qx o -S k *r ?i <c u. J0 !^ \n V* = >E Y i i- 0id2 T 4I! \4 c! 5 9 El u kl v <3 --**^->2T4 41- <1 si 1 3 I !- ' a> 4^ ^r %a O^ 5 m a" >Q5h, <ea%<v3u1^i -,v vJ ,xt > > u. 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(3 ^a g Cl 6 & p < 411082 0564 ROCKDALE WORKS suRvmn 411082 0565 411082 0566 SURVEYOR_____________ C/A&. srom oR 411082 0567 ROCKDALE WORKS DATE; 0 /n To 4,,82 0568 SURVEYOR soRvarat womans 4 c 41108257 y ' * M H 2 H > ee a M M as o tK J < o: H a o x 1 2t 5k W?'2'Y ? <c < J* lo> k1 UQ X^ C* u. 2 j*M0U A8 Q- >4> .5 T 0 ITy .^ b s a<2 - x `5 5 5 e*e ,:<* **`4 Q If 4 1-5* "v o1 l, ;l ;8<s Vv* - S ,aS? `d thi 4 *. ^<2 , c:- 4 ?v] Hi>x: 4i I-1 r A l i/ri * * -4< 9tt 006 0 0 Q O 4 v? Ci3 9 W r4i a 0 O r4 3 > M o B j a a t* 0 2 a, s o I* p 2. (4 > l COJ is5 0 0 Tl ^>7 Su ,,0 K 40 7 T^ v> I a v/: 7 i UJ t} 4P u: 4 *I JS : $& oo 2<s 0 9 6h >4 hS 3s 0 +> S 40* S' 0 C w3 V. 0 4* c > s2 0 o 3 jU* 4u 4 .* I'* -O s w uo -<3 MV i2 r^O 7 rd o <0 > ^i 521 -S^- W c 0 V5 * vaf Q.j Q >^u ^ > 7 ** <z V 7 7 b v> 2 j" ojif! bX "Z *> UJ t "Z (I L V) * l'' Ui O >.- Cj ; t v \n o * Ua & \2 o *2: * ^ W 3 g o c o C Qo co o Q c ^3 v) <^J o e? s 4 su o 0 o0 c 3 *3 3 V 64 8 3 9u gr-4 O 4> 04 > 55 0O 35 0O < a 0 4> <2 r-l 9 0 *4 > O ho c ft 4) XVt r-i > o o MT>*4 ^WP 0 C 0 c S' 3? *o4 4* p. 2 O 41 &8 i<04H6 *c4 fe 0 &8 JC p &S SS 4^4* 0a as 0 ^4 *H S3 ^c4 o 3t XPS c & J :> M HM 2 U b B 4> CC M > a 4J H O3 W 4) M 55 H H O X < M Btf H a D Q X M a 0 H P 0a H 0 > W T3 O 4-* a a p *4 P 0a f-4 0 > 41 a B e 4 9 * o k sc`1 s* "s :Q. *\ t /;Ci r jJ 5 *i s?>. on i ?4 a y < j* ^ 2-5 `b ** b T T 2^ *-o oil *& \u * v CJ C* Q 1 Ci fcl j 10 k * c: o i * s * j j B 3 o c 0! o c p V5 HH 3 CO 09 ^4 >> P O S aa B 0 0 H P B S 9 k g> 0 bH t c h *o 8 K 0 CD V 0 wi 9V P. H P O ri m u i P< M 3 H C D 4) a 4* a o M > v s at o J: 4i u JJ -1 i, O VI s x5 <* < ij k -< 3 * C ?t 0 ^* r t l ^ J A I d --J 41 V O -* "$O c Hi < v, Q* 0 j C5 C 11 V> in ii i * ^ 1- t> ^ -? tji.l*- * 4 s -S ; Q * 1*0 *S K i; s 't ^ J 1 a Cik ( 1 t tJ lU .i ;. 4O i ,4 TT^ sviQ ^ <2,s; i5 ko O > io J b. ^ i a /r 1 B nt p. O -3 -- * * <; i 1 f Vy b ^ m -i ;1 *k V> -^t5 V"J 0 ^ < ^T ? ' 5 Jt l ^*J *' v I w 1 ty CO "3 v 1 c u P i Ss v> |X ; > m"? -t " T?J k^ va B i y J'1'* i . * j <o k5v<. / 7k ^ ? ^ i2c! 2 V c <a 9 v.'S ? f ? Jx 32 p d Hi 2 u< o!'; ^I -. -' 4"av 1 ! V) c ^ <K^ Hi Q1 ; Of Cbfc S SSi 4 I . ..V <1^2 j954 i s5 o;> sa^ Q 0 <* C 0c vB <3 CDO 0 ao a 0 0 80 < 0 0 CD vb HH aj o 3 3 CO H 3 O 3 v4 ><> co 8 4) P CO P CO a -H o 1 S5 i--? c ?4C> c vo4 P g u o 3 K S? +> CO fi x> co to 4) C t-i <H HA *o P O *8 CC P 3 0 PC W 3> V H 3 CO H > a 8 P CO a 05 4> (4 5: a 33 e CO r4 > o 4) Pp 68 ^ a as P PO CO P a as s? H c 4) P rH CO A 5^ J23 +V* hV as >-4 u pa 8 g1 4) v4 O d 3C 3 & o M a H tfl CC s * P CO c P3 H 3 k4 pa o p> 4) ^X4 s 411 082 0576 SURVEYOR_________________ tv .fl/? . o r* c tr V -4 M a M D a M K M M o * K pi < H SC h ca o o as v <9 * t 5 He I lo V? m M Q '* ka > fO DC r^! *o ^ w4 V-* *3 > i j|; t* Q? :< 'A it X K % o Ui Mi 9 3 0 0 0 Q 0C o0 0 9 H 0 w V A +* s 0 o 0> M 0 O o J uo m u s0> o0U o SO x-H o QX Mi j 0 c c *?! v) -3 Q< e >- 2 |4 *2 <* t" * r? i^i 4 0, < < * o * ^_. i-c 13^ O Hi Xiu ^-*Uil2il^ *>* ?:> vO *- $-*! -?-v*= c o0 <^3 % :* g5 mO < 0 > 9 V. O 09-* PU0 0 5 H Po* fi 0 C CO 5 u 4) P0 0 0tt & 0 U a0 & o 4 ~Z a O 0 <s5 s (4 O 0c <8 p0 H ss *0 H O < op. x 3 ca j Xo 4 J V- i i S* J ,X* n, }i; *c C< o11 %0 *5 vy >* "4 5s 4 5* <!7 ll.1; C0 < 4v. c -> > S Oiio*i ^ v, < 5 C ol -T Q v4 0 C 1 iJ si 85 Mi * i-H oV 00 O I' * *2 d Q s<* 'C . c. q S.51 lu Uio - xSS^ uJ ^QV> . 5$?5 0Ui s- 1it`- g3^ Mi 4 f -* < 0^ 7O 'o - > 0 VJ icf suRVEyon Cl J* V) S 0) W oj' o c 0 V OOo Q OOf ^3 c co 0: Uo0 0c CO 0 2 090 ^0O >^ X43I) 0O P0 t-9* PO Po 0 p iS P0 9 oP4 po 0 P oPo Vc oo HXOH r44) X p -P Eh H +<4 Q3 o0c p pO- 0 gfi- 8 a* d 0 0O r-l * tco x0H: c Pm P0 c t S5 xooz* O CO p erl && 00 0 u K 00 a fc s 0c 5 4-41082 0577 SURVEYOR 411082 0578 \ 411082 0579 ROCKDALE WORKS 1 c DATBt J ,, . jk j& /<nft \ SURVEY 411082 0582 SURVEYOR SURVEK21 CM.(L cunr iw .'im A i. o C* * <= w H i' D H * i TO s > u :i " ') I1 * M H O a J < M a: H CO D Q X Q B a 8 1* *$? H ;? nr ^ j* Sit >J T 0**t .0T a <% *-T aa i > o^ II i -rf, StU 4 J'* 4 Ki -'t ^ S2< 73 u > >~<J<;, O O v? 2% u 3^O i i 4m 52 *4 Ot *~4J->.-0< rW(4A 3 tOO X fl O o c 0 o 00 4o HM34 T5 XO * a (>4 o cn c a o <55 8 cd 3 H 4 W> 3 CO > 8- b eo o o* tf -J 0 9,y * T _<72*'4- i^ ;w; r 321 > 4*1 *1:* > _ I- h o. *a. U<j <*at - 5- ^ ^ q t: v> I) N-*<v*3 O;i S- vfi i<j> nc 153.71 i-3 ?<* ' T If.rj yJ 0 S a< O s* k*HJi *. i-i C <l $2* ' ^u O vVt t .t5 H 3 H :$ 3.2 tH liit > *5jj ^* r i r * 7j oo 0<1 co % o o C5 o oo oCO Ij{ 8 E3h 3-SXVO 3<g M>uo II Ht HC St *cHo *a >5 fi o o. *8 ^O4 CO +> 4> CO Is <0 > ? s et i <OH CV s t5<$ *. s Li J- Cl, m mPorI.fmtlo <a 2 < VV tcad Is bo SP O c41 2 8 S sa Bo ac o3 X <oH acc Li m a o u K' * '1 Tt < c** r? Q^ ^ \J i <4 <J 3i S V> W3O <?a* r o w *? 3. tj Jr .V^a'1* Htt1' J tti, * * v- H ^*i v' -J S.* M .- w ~cx _ i > -a ^.j .?3 j?>i- i- -t I4 < t 1^ S <ij*ao 1 !i *1 M >'-Q ^ C i -2 CC Vt-a X c C ai a c o v: O ^3 41 > o e* & 09 3 C 4) EH A o(4 <s 8 +a> H 41 p 09 9 CO s a & -rH > >' oQi l PwO 09 3Li U Jd B 41 PS pP <8 411082 0586 x :* > o j'sl *a n* O'! >-> M HM U m a 4) OS S'* <3 a * *%. * 05 ,,Cj 1> 1- o >s ^3 JJ *, d^ T^ Vi ,, to a >- H O o^` > G a 031 CO d Wo Xd w p34 M d> oM c c oo <0 <J3 ffi J0S 4i J1 < a o M a: d 3 H CO H d> M D $ CQ H > O X oeo p10 eo 3 9 i= u to o 2^ du 5! 5w i SS a 4 tt * * > O j j *. tow. vi Q v> < o Hi t <X 7 vi <^l T *u t d: r -J 5 XX fr- j j u. Hi V> <4 V* J J cd <0 d Xr V> VI -3 0a o c 0 o *3 < '; ,,* d J 1 . 1> y' * 4t * X , r" - -'5 *; <J v2 *, 1/ : j # 114) . * m * . of 1 j c wi <^S5 i<C j jj <x <X 7 V. - 4J t nl 1 5o -*2 i W <6. J 'J u u ;<J ^2 T<5 oWJ^**w*,J' V v S** >- < d ^ 'M ** ^r> 3 - T 1SJi 4 t o."3 j ; k<i |S* 2_sl. kSSei <3! CS3 J8 <3 or ^5 1 A r-l +J .3 CO +J a o 55 r-l fi 4C) f 8 e PUO 2 S2 S' A I* "H A "* XJ JO o *8 P3 ^C K CO d P <a o c J 2 h4) a 3 PC rO4H1 s SP 4) O d ff a 8. u 3 g <2 3S t a, g +3 5 (2 o 411082 0587 SURVEYOR n ufi o c* c* M H 2 u > AS D CD M as H H o X J < M os H to D a as f3 vi ^ *, si?7 T> *< * ?i |i: X g O 5<ii t -V *i r?* , Q j s iX4 *t * Si J v) > * *** <5 >2; < 0 * ioj - 1W i j* < v*i ^ tt-I >a JJV1- Q_ >o 15' V- * ? *4 U <*2 (3fl OS fl o < C G 0 fl i9Hf>l * X4f4l a a o a 9 f>l I S c o o 8 J sc *S fl u gfc 5 as a # o cc a 2 a, h? 5 <V iu J- . 7 c<t(i wC* % 05 3a < .. i W 'tJt -*v >^ ^* H r^f $ S VI . Uj *i > 2l 7b * } W^ - -j'ti j ? v j x..^%hi <j i -j ' V*l } ", $iU A * c 3i' G 0 o V 0 0 o 3 i* 8w 3o >3 fl eo 8 r-I +> 8to +8> g a a3 t. 1: Si && o 3 *7 o i- < h fl <x <* ^ -s io -J5-*- 2? !S 0 *f U O rl 7~?? i-sj 1 U, x H xi ? 0i t, -s< Vt Vfl ij 1* jk, ,V j >* V. 7 u <1 s*S O VU iSs'u<o 0 3^ 4 0 X O' 7 **t h so !i>1 VO >- It 5 l^i^ *3 5^ ^*45 U<5<JUt| r i: Aj v3 ^ T SJ( ! hi < v T<X <?* 7 ? *i a ?; V) Sk a c. SURVEYOR V- 7 > *. ,, sV o o c o o o c c v!j >> s u oo a c aC 3 ) 3 3 fl 3 ah 2% * ns 83 ao ao u o ** o 4P) 3 > 3 3 4<fr*4l o hO <C1 X r-l JS H *vo4 fl < o u H3 c ? *1 ft H 43 a & & h C 3 PS & *so3* SS> S V z X -O H eH a& ai <0 (0 PS tS ^ H c X o s" H tO S3 3 cc S3 t c 3 Ufl N H 8 4* < 411082 0588 r* *T" jt i ,?2 j OT ^< TS ^ u>t.1 ">*> 5<3 w H 5 X0U OoaS i ^ ^* >\ w J* - 14 ^ Ji c -3 ,% Q i *- r 1 Ii> 2 2 t M ?? 0 > 3 O --. . 1 Hf40i90S4 W co o o0 3 W H +0 r90>-l o o (4 > X4oo* o Ja < W 0o 3 t-> M HM4009>* 3 H i U do 3H] (0 3 > co a as H V00e 9 4) a o00 o|o fils 13 00 k 44 m 1 jl 9 1 oz . h1 0 o04# a 8 .3 2 4> & o 111I s<aHJ 1 4* I d1 M90 I|1 a <<j <>ir <3 $ tK < u. Uj <'-) m Q*4 k*c-^* 5 ^*i * J< 3! VUO QV i V T "j <* v \n a o I >^< 1 u7 V Oi ci! * uiu > 4 ^ <H3 4. > <t tK 1 1 0 i c* 4 " vn t j bj ct u *Q <*V a K oa 1^ VI 1 2 hi Q 5 *j'9 ^ $ 0 Q^ 2 U. UKJ <x < u. C( 4 u. c o0 <3 0o O0 ' H<0 90*H r0H 09H H a09H r0H Q9H >>>> ts E IS 0u) H ^ 6a0 4c >V CO io-cudt a *a % i w> ?0 0k) < r0H u0 cOJ o *4 Vi J >u *a 0to 1 + ^ ss j34 a>t OU 1 w MC ffrcl. Vi J3 wo O i o r* J j -- ! 11 j' i t ry 1 o '^ 2 1 j J Cj s j 1 8 H j . i 1 V. -r; 3 j i d Ci S -n Ul W <3 411082 0889 1I1 CONTTPENTTAL fSTOVFVrR ROCKDALE, WORKS D A T E H: ,o ,0 7c oi Mk * aOl '.U <k 0 <1/y>* 7 H Of c CJ > OC D 1 W X M *4a4>4 oW < m TO3 4G4 S < M oo en H W D Q X Q 0o 03 Q Q Q cs c 4 r- o o 3r. j ? av h rH 4W i S js p to bC *d 8 r-4 C D 4i a oi 7 7> U o~ Vo 5 4 03 I S 3 "J I o \o < o <* ^J s **J 3 *** r*3 rc v-o Z7 ^^ y <3 * < S*l >- "- 5 ;z s!* *<3* Ist V.0 -> > c in l t2 '/> ^V> 7 s5 Si 1 7 vj fv *n'Tc t- "7 *1 ? 3* -u. ft u, *ui ** 3J Y ^* ^y >3 $ ~ J u & A 7 3S k 1 j *zZ i S'i --7 * 7 t-o * " ' % c. s V 4* 3 '-j% < <3 1 4? UJ <s; 0 1V -t ^d ** V7j syi 1 /% < k 5* ~ , O* * j 2 0. 4 < a i ' -7 s- to o 3 re 7V*7~S5 -- c c C $ a?<J} 03 a o <3 a oa oo 03 03 05 CO 1 >< a. X3 H 3 (0 Cl p o ft fi 0c1 ? (K >4 *o> 2 sg1 S' XI t* H o -O o *8 cc (P30 XDC> ap d <s c 4) d 41 ws4 f c a *d SP <3 * *8 8. ^g OC P>4 32 Po $3 S4i a. aw mu 411082 0591 SURmCR M H 2 * Cd > at D 01 H X H M O H P < M fit H , (0 s o X S'i T-S^ *v rq 7 t- Coo ^ V, ^Jo JSJ .: 4* H> "x<'Crii jJoi 'i i . t Zii- -<J sT> 5 ^ q* it t*j ..p '- T ' j L C 2^ a. y xi t i>**.?^*.y * QJ :4> 4 d> W TJ 405 W do d 9 h d> M B O o J Pm cb CO 4 > 41 $ S3 as a 9 4 *3 * ? 5 ** ^'5 *> '* " 7 3? ** sj t < -J * .y * %. v. * 5 I2 1 UJ I- r t V V V) > Vo .5 2 `J4 > <C <5 O J 733 c c Q v 4) 5 2* wO & *H P 98 (ft +> 4) & W u m & 4) o <4 4 s W si z< <* * ih kt /'S u< O' <" L :^<f 'j* o i ~ -t * H> Ss * 2 3., j ^ $5 s 3^ S 7y!l < ffjo a Aw5<2f*z- <*'Xz' d" uj o 05 ?T ;j V\>?f' ^ ~ *5 QU < <uJc 5 4 >ii 44 <s* 1 k. > -3 ';4 o 5^^ ;> < *- x 0T C !0-1 rt3t 7Vi ^*i i>A^ u. ^ 30 3-.- t* ir 3o*j: C<? Q 1 <x <s 2^ V$ j ^ 7S f?4 c --O <4 fU jj q. j vno vi ^ i <1 Q v2s 573 SURVEYOR 0 Q C3 o o Qo0 c 05 v2 03 c0 > >* o uo a C a a 5 <J) 4) 3 4) > 3 OP 9to 5o 9to 5o oP P4) >!g 9 a X Hoo>4 cVl 43 H ii wo 0-1 <V Oo P<a ?s oaco-4 +J 2(<H031 DO. * P. & 6 O A) in s* 43 P S'h P O a a&'5 09-1 *4 JoS 41 II o-l Bu JOtf 41 u 05 <d 41 w 5m 5 6 U 4441 S p < 41 ^2 Q5q2 EURVBfCn SURVEY c w H s H > os D M S5 M M u > s >4 < tH ee H w s o * L j O X ud a r* cae o < * CJ 7 > : c: *^ A * "i 0? o o5 K * u i Q I ' 3 0 O4S) HTWofo<3d><4l a c o O. iS o a a a o fl 3 Hfl > w c o u S3 s 5 S' tc <r J(20 Ufl 8 f3* HP 03 fl fcl O ;(H*4 A o& P to a a *o J! ti oj o 'S yi u <* O J `i,i V3 * *1 -J Jj < * V7 -v :j %j,5 41^ i?*. i <j -*i tM --? n t, i4~ w "ll! T c T .1 *-i A r'*- T ^ u ^ 1 <s H "i.? ;,,i" f V .s <J-*",*1v- z-*<J 2;P-'i3 1i i iL -4-* ? -v 'C `t 9 :j- Xo^ -f1 l1 - *< y .3 s.*2 i. 7 x '^ *^ ;3 jj w 1CJS 1 in7< *7 ,_*f**7~ r.u-j)j ^ l u V< * o?4 iil Ul t jj - Vn ^i ^ \T W ctJ t2 ^uJ 7y: A- 5* *t1 7 -- ^ 7 o <1. J Z* > jjt O * ~i ' CJ r O Q S ^ 4 c? UJ g c 0 0 u! QJ o? C cc 0 < fl 2 E- J- h5 S S; 0 H 0P > a Pca 0 H o 25 g c ?p (4 # 2 ao: 6c0 H o CO p0 g J3 0 fl 2 u 3 (U P *8cc ffll .0 O +f>l Xc> CO D c8 9 JS P P 0 a as a] g < S1 U c 3 S'4) 0fl t: d H d 43 s . 2 Ph a s oc SCU 0Vi ti au p0 P3 P3Q OU 411082 0595 rc cr M H 2 W > os D 05 M S5 W H o i EZ3 J *< H OS H 05 D Q S5 r 'J if<j t5* t7 Sj ** IX vl ' k"- to :?r V T. v\ vO T j. a '0 J . > ` -3^ i 't P } *j a ^ e -1 r 'L TSa' <A H 3 IA OS a o< o d 3 c H>Cl U o 0 o Qj tJ O ,C 4* o 3 a o <* 3 H d> W c o u CO <0 au o V au. a o H * o ou p Xw 4>) >V4 & O S3 o as: a T4J) a ? > << ?c ^T w I* UV t v * ., "S 5 i Z X X 'il 5 <o *^ ^ V"> ;5 ; >* i-o v~ < Q C 0 <3 e3 4) o s* ss (A O <8 4) OVi P o 4) P a 4) O o ao 2 cCo c u 41 $ o 4to 2 cd o 5 o ri c c c X OVi co C (P0 H s; *d H O < -( 2 C ? Poi j: CO 4X f^ ; *M 's i- j J d 4 X o ** ^ ^ *j J 11 ; a? 5<- ^ * 4 J^' 5?^ 'j*w x2t ^^ir%' w *11 5 j '-4 - *? I ^ t,-4 Vj w <t 1 T 'C o^ ^. i *I. cU Ui u > : I I. ii ii P;i V-? ^ " 2'/** "t '> t T < 5^ <* 4 ci cC ia` J 'i*3 a-3 >? v<J *7- i.'; t ^\J V iCf ~-zm-Zxxr'- i <_5 "JJ as>-. St g o~> Ji x- OG NJ 0 0 0 <Jj <a 0 o XVi Oco a 4) CO 4) 08 rCAO 4} 31h0 M Oa > co 4J P 3 co o c 2 3 t< Vi O P O 4) P & o Vi 4) HO 0C) X! r-l OX O TV*i ^p o E-) M 2 goC CO & PCH4 4> w Si &sp H 4) e v a g&C o c t Ik 10 X c 49 K Hd aVvt<o) CP pco r-l 2 C 5 411082 5oe SURVETOt & t* g ; i Hy o > u * oc o c<y Q:'i,i \i 5 i -z ' ^4 ^ O i5* *j > v' i-<.M I *i --,,-<? t-J --^-i s "4. -j 1; *** *7 Ol 33 ?" IJ - ' i r-s3 ? Tk 0 k ^V T to UJ u v% M 35 W H o K ffi *4 H tf H W & Q as c o o a Qi^3 o 0 O o C c Q c c a 0 <4o? <v3 O 0c O c o <0 >> u Q (0 c 4J CO o CM r4 O s u o 10 C 4i U HC a) +J 3c 029 ^4 uw o p. <8 u 2 0) r- zu | Li C0| Vi +> o It Q P3 rH s C& oo H c tjs cd o s1 (44) < H ok, -rsar 4) U pO tt 3 +j to v p <0 Is& C rA o m Pi p. 5 S' H pa +3> acj o e-t H C H +> P c cr 3 O o u A o 09 c0) (1) co .2 08 3 Eh -< 4) 33 " < > i * i vC y o< 0 <* *u rl1 c *3 c1 t Vi Kvn > \o *J ^41 <c qt .<0 ir" 50 j2 ;7 t i^ru-1.O'i ^1 O *> ii t k u J I _ 4? t .^ `L J QDt V9 s k Vi * \i O r-' w o > *4 0 ? ^ a r o J <x s w -M < Qa m ^ ^J < 1^;V k > -'k <t Cd - -- ., n ' c , ^x=0 5 J> c c 4 C G 0 Q O 0 <s o 1$ 4J > 4) & 3 u o d Eh 03 c 41 4J CO O (4 < o 8 p o 4) +* (0 H > o Pi g V) 2 3 p o J3 +i 411082 0598 " '" RROOCCKKDDAALLEE WWOORRKKSS DDAATTEE:: JJ nnJJ q ri - j ci IN D U S T R IA L H Y G IE N E S U R V E Y j 4 Vi S U 1- CO M u 4 a ? 4) oe 1 a A <* *a <* 'J * 20 v. <2 1^ ,(i *j 4 I .s <= t 1 vn 'y 2 s 3- L. 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Q ' c rq Cl > J< 'i X <x 4fi O H w V) rl. < o c0 ^5 o o e i? > >> Pi In OO ca C aa & I& 0) 0) x> -o <8 O rH +> cd a> o 9 95(0 H &> ;wH3 ofi >w <a o >< a +4 o Ph 41 OC rH 41 X r- O >> o o H 4S HPi M-P CO 0 c oc c ? &H -c +4 03 O <fl H &< oO- Ct.J c H M J3 M S a P as s g +4 a w c4e) d03 H 'H c Mu t 8-C T3 OH O S fe Id o S> k o Q Q Qj rl 9 03 H > 4* CO H g 0c) 8 p < 411082 0600 SURVEYOR SORVBfCR "i " 01 *u* Q c4e 0) O4>i CU co X w *J <4 r34H > w o r_ c vr vr O Tv> c 0 Q o 00 <^5 u: 411082 0602 SURVEYOR . > SURVEYCR mmMP 1 V im ir 4Uo^oeu 4- 411082 0612 t * 4^ {j -eJ& -fAu* ) G-cfr CT^-' -V- * *,wJL $fr*r -V. 411082 0614 V 411082 0616 i i o- k <4 Q U 1. t s' A o k * 4) *X M tt 3 a U 4 m a u It 4 9 *5 02 ^ Q i * I- 3 3 ! a* $ lu CS 32 V* X^ b K IJ u 0 00 CJ M 44 H D9 V) W9 OS e Mo X 44 H9 H M o o Q V5 Q o 0 O ow k s H * J <a o M H 44 * 9 HW 9 CO & D r4 99 (0 iH H >> O 44 X 0m Ma 1 +J PCO 12 u5 fa g a 8 5 S 4 ,# 4H 44 9 i U 0 g S' H <0 u9 9P 44 9U b >4 H O *Ut 5 to ss 4 a 9 *T4. tc cH 1 e & 41 6 nn * * 4 9 hi s V| S aj 9 VI > s k t% <3 k * Wl <3 * J 4 * 0 U <rt k v> u r . * J* | 5 7 M*< 4 ^ T 4 $ - <3 ^ * Jg J 5S 1* j ^5 - * ! ^ X5 o* \n J '**'. N^ '1 >? sW if ? S*s s tS ^ 3 g -,3 ^ Oh JO b iI ?? Ji*t # * oX 3 0 "Si ?- 1 i Wi 3? . 0V4 vo >W 0^ O OJJ *555 < 3s u flh.'X <* ^ tu i s r PM 5^2 1 i t: t ^ s4 ^J Rt T ?h < 2^ 4 M 55 .bk 1 TO ^i L X O h T ' > f J O ^ ' *5*5 1o ak O k <tu4 O '"51 i 1 0 0 CJ 0 <1 - ? U I'^SJSb s < ?<{l * k 5 "50 Tt 4* * s -u 5 * T m* . . ____ <3 2 4^ * ; w 1 < ' J1t 1% SURVEYOR <2 Q 0 Q 0: u. O O 0 o 0 0 Q c 0 0 O O V o0 i2 O Vt) H 9 CQ oH rl 9 9CO H 9 ^4 ><> CQ 9 1 J8 12 <9H0 5 o K H fi 9c Co ? U 4a O * to 43 10 fi 9 feO P &94 C v4 crt 5 *d 9 A o *8 cc 9 3 43 43 C WD X9 f u 9 9H 9 CHO > iH 999 & aP > H H 9 CHO > 9nr4 > CO jl CO 9 8 CO CPO pw ^ PCO P9 P9 5 a 58 5 5 9 9 Pi < s H c 8 9 =f S H 99 "S o 59 da -3 S' 9 H 0 d 9 1C 8 9 91 4a O O ac-* 4)*-4 94> o 5Sa, cu 0 43 P 0 b 4) 9H aw u c-t 43 cc 4a aXH 4 1108:>0619 NJ vi i =' / J c 1 % % *' 1 UL-IMIIBP JP i 411082 0021 vrr c ( 1 .4 411082 0624 SURVEYOR I -* CONFIDENTIAL 4, M SS *' u u.' u* v, t t ait AS u T l *< < i'C a Ja Vj 3j U 'L <1 is -$ X T "*J H* MO O k*Ja *-j3 Tt h\ OO c'i- o f* S'- ^T 3^ ^ -> a D a M ao x M9 M oM > a 1 a J < M a H a D o X r o o t>,> o tco A 1 o "F . ' * so ' Xi f.2 <r UCJ ** 1i * <i^ *^ f jm jJ 7v k -t M >1ii'- ^ "i2 -I l h* <0 4? 2 } i T (J o $ 1! iI j ' *81 * *t u < <3C < i-* V) I- tfl a r *L' t; cc C C v*J I? O Q |j sl o Sj VJ 631 H 0) as < HC ad ti a e dd Sw ft 5 *5 ca +> a 4> 3d o ii 8B 4. 2 it w a 2 o it H C a I of<t <55 d it s 3' u < a 58 au. sra p iot tccT fc Oo tV>0 l S3 13 5 m eq u a1 a 5 4) ac +0> o >; o nu N; a H Vl !* A^0 k->' n *4 ij tu i>j 55 < - ?: t *< t1 >k s v> ,`J at VN? K <, ^ * "T 'i t j l d V- ** -* o +^ <of J k -j ?Q? i^S^ " k1 1 <oc i l Hi AT t fQtto?? iti >' t^ CsrjQS5v31 Q Q C o ti C5 vj 4 u > oac e 8 8 A a 5 8 4* ** to *4 i eo M J3 Oa3h A4> J3 *> A 411082 0627 V DATE: n inu1 i .fiM 411082 0631 4 M /H . FROM H. A. SEMKEN ROCKDALE WORKS TO MR. T. B. BONNEY ^^MEDICAL DEPARTMENT PITTSBURGH OFFICE 1 /.r April 24, 1969 CONFIDENTIAL Copy to: Dr-. M. 0. OnTwall Pittsburgh Dr. L. V.- Craltgy - TTttblmrgh RE: INDUSTRIAL HYGIENE SURVEY We are listing below comments on the items referred to in your letter of March 21, as receiving less-than-favorable evaluations in our industrial hygiene survey re ports. As you will note, corrective measures are either contemplated or have been taken to improve conditions in all of these areas and steady, deliberate progress is being made in carrying out these plans. Bath Crushing: Design of revisions of this equipment is about complete and this project is almost to the RFA stage. It includes a revised dump station, conveyors to mill, transfer points, and more hooding on the belts and trans fer points. An evaluation will be made of the entire dust-collecting system and additional capacity Installed, if required. Bath Crushing - Bag Filters: The frequent poor rating of this item is due to this being a continuing maintenance and operating problem. Generally, work orders have been requested to correct the situation at the time of the survey. On one occasion we were out of bags for several weeks and on an other occasion the fan got out of balance and the new runner was shipped to the wrong address by the vendor, vhich delayed the repair about two weeks. In most cases, repairs have been made in Just a few days. Conveyor Belt from Mixers: An Engineering Work Order to install a satis factory hood over the open section of the belt conveyor has been issued. - This is presently in the design stage. Blacksmith Shop: A forced draft fan has been installed in the exhaust stack of the hood over the forge. We are also listing below comments on areas, not mentioned in your letter, which frequently receive only a fair or poor rating. Fume from Aleuplate Washer Dipping: We are investigating the use of a ther mostatically controlled pot to prevent overheating of the Joint compound and to cut down on the emission of objectionable fume. Potroom Atmosphere: Our worst problem is in Lines 5 and 6 where we do not have adequate draft to tolerate bad covers or fan downtime. This problem should be corrected when the R-398 unit is complete on Line 5* Mold Repair Room Degreaser: Doors are being fabricated to close off most of the opening while the equipment is in use. This should help prevent the escape of fumes into the building. Also, additional heaters have been or dered so that the solvent can be heated with a lower temperature on the heating elements and prevent local overheating. / ALCOA v 411082 0635 %0 4963 tv JCCM-V4? Mr. T. B. Bonnejf-- Page 2 April 2k, 1969 Wheelabrator: Although we are looking Into methods of further decreasing the noise level of this unit, nothing material has been done. This unit Is, however, only a part of a general noise level problem In the entire rodding operating area. If you have any comments or questions, please let us know. H. A. SEMK5N HAS:S 411082 0630 : ' We JV/ // ***- 4*#+ **~r A? /# j'ssr A7j* +y> Sf+r&jC J/ M/t.Z. 411082 0037 * 'i. M s I H at o a H * o > B >4 < M of H a fK Cl It - * u O ij -S'? J o -7J _ Oc -si- o 0 00 <5 >u> o(0 c <55 So u .H * Os H *>1 V) t' O iw 3 Q " js ta u'V A j V?T 41 Q `J <0*1> >Vt . in in IS *T r Q1 c* M $ * o i v</*i o oco (*J <5 < >Coml* l| co>. a S* 4 i-l 4) 38 5.B > a hO ma 0 a 8 u 2 m art p 4i a P 8 oj u di MO Iii 3 O 5: MFIDSOTIAL c 0 J O 0C s* 0 U8 I -JT a. cn < 0 tt oc o p a*, Msf pU, O2 V0tt CaL <3 ff rH4 o S art ss o f0tcrt p ac p0 o X 0 *cc u A v 7 J* lC 7? j .\ u ^T >a "bw t5l *aft x: s v\ o 7 ,o4 t; he u* L- >7U ,1 -4 vs U. ^1 aft i00?: t- XV >f#It*noQ-<*"4i*ati VU 71 o1i M6 tii a] iQ t 5lj &4] X rStP 4S a O31* P s 4tT082 0638 :S i <r c- j 5 M tt D 00 M K M H O H <4 < M H co D O K 41 ^082 0640 1 CQNFIDElTIAIi \ I <11082 0644 \ rrs?' \ 411082 0645 CONFIDENTIAL 4 f 1082 0649 411082 0650 DAT f w* : . 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O U% *I ZDk cinj ">* jQ iO 4 Jt'a *$ Jf <* <* J "* v \^Qj * 53 - Vx - .--* v' 5 <" ~2 i r >*i ^ u ^3 u Ii i > i. c2 * 5 ?'2H ^ [t ss to C t x `y V <0 l <t Vi o V* > b 0 <0 1 8 cvi H O u Qg VD o u g vb X Io(0h I* 9 o3 Eh *P 0) C0 X 9fl OP p Vi > su o w ca ** ir-( C 3t aa 2* Vo. tao (X 8 O & a p < Po to -H Q3 Ctr uc p S I U -J a- m U, < Vc p p9 CO a 4 u p o tc Io& Mr. *u rfHfl P .* Pc O9 H0 o p jl tx ; m a o c *- 4a 5J o ?t ( "t - x ui i * vj u n- > ir r <A V? N4 j: 13^ j3 *1 ?*11 ^ I> o o< TE ^ s* *0 o SUHVCTCR ;* ^d ik ** * o2 7 . y^ c >^ S^<lii *$X 0 r*S > <J J 4 5 5? Ool Q 0 ci o o V. 0) o; hIn O Eh Xi 9 CO c QJ M O Ioh 8 & pc Ip J QJ P %9 (0 CO H O& X 5 E6 P CO s 5 (0 6 c P CO t, o p & o CtoJ S' p w p o o g XC3O O P to 9 (4 O a c/* cc t- po CL x: p X3 P & 0 0) 411082 0708 Id e n t. I O p e ra tio n o r L o c a tio n ] C ontam inant j E v a lu a tio n Method I E v a lu a tio n R e s u lts I Remarks & >J I^ * ID y 'Xu. 2'i- >s : i K=> -j 1 uu i . V * -J t ^>2 * j-=t !> j k/s -3 aU o \J V5 C UCJ 3L. rP-4 U Ur** JZ P bO n <2 cb: 'O g rH c :=> o4t- ^5Q > 't a * r u J ^ --i > <*] CT V * :2 vi Vi a o u t<< Vj ^. t k'~ r 5? vi f ^* o 2 i5 v".CJ > v ?! cy k31 r* c viii.S4 rm Sl5 wO HV, 4? H~ ..M ' T * ** ti vi t-f t* a* w V ^*t $<* c V -I '* l^'t rt *O vn'i uS.t * ?* u' H 4- . u OO * VL Vc * XO ov. Oj g L L Ct Cii 0 3 S Uo 0 Q c4) Vi vi fci; Co u ? aos p u o P d 8 ccc tP0o bf tc u Si oU Pc rdH CL, P"4 *3 g as Q S3i O .O X"* PC to D Ca ss v<H0 a p > ><* CO *8^ Pa p u 03 4> 3 Q ss at d oj u < wcH uc dK P rdHo SP co 4) r.sg 3 s * C Vi OP ,-4 PV P to PO a. Li 4) Od IW^ P3 C3Q OLi 411082 0709 cM 411082 0710 u C M H S M > I d e n t. | 0 |> cra tio n o r L o c a tio n C ontam inant E v a lu a tio n Method I E v a lu a tio n R e su lts 411082 0711 f'r H. A. SEMKEN MR. B. r. C&RI3L/J ROCKDALE WORKS noeraaAic wotuto September 2x, 1967 Copy to: Dr. L. V. Cralley, Pittsburgh CONFIDENTIAL RE: INDUSTRIAL HYGIENE CCMMTITEE MEETING The Industrial Hygiene Committee met on September 20 with the following present: H. A. Semken, J. H. Greene, C. H. Meyers, and B. D. Cockrell. Occupational Exposure Cases: Hone were reported to tin Vint Jj|Ut J^rlog July and August. ' F. Level: The fluoride content of vegetation within a 2 - 3 mile radius of the Plant averaged 10 ppm in May, 17 ppm in June, and 15 ppm in July. Rainfall in the above months amounted to ^.h2 inches, .00 inch, tod 2.18 inches respectively. Monthly Industrial Hygiene Survey: A systematic, monthly, survey of problem areas and hazardous materials was begun in August. A copy of the report is circulated to interested personnel and it is hoped that all departments will investigate and collect unsafe conditions as soon as possible thereafter. Potroos Atmosphere: As noted in the monthly report, base conditions in the potrooras continue to be normal. Placement of covers is generally good but the condition of covers has been getting worse. Some new covers have been made and repair of older ones is being accelerated, which should improve this condition. Scrubber System: Third quarter sampling and analytical work is complete but re sults have not, as yet, been evaluated. Bath Crushing in Bldg. 37: Thi6 area is very dusty. The flaps on the hood over the crushed bath receiver need replacing. Some dust is leaking thru the new bag filter. The bags should be replaced where necessary. J. H. Qrsens and M. D. Cotton will handle. ^ 411082 0712 Mr. H. F. Chrlsco September 21, 1967 Page 2. Wheelabrator in Sodding Room: The noise level in the area of the bar cleaning Wheelabrator is quite high. The rubber sleeves between the air cylinder support and the top of the feed funnel (Wheelabrator part Ho. 199155) need replacing to suppress the noise level. This should be a regular maintenance Item. M. D. Cotton vlll check. Carbon Plant Mixer Area; The conveyor cover is open where sli veyor, resulting in dense fuses in this area. M. D. Cotton conveyor is open due to construction activities. ' ' '" 4be con ho nee If Dracco Collector; This system is operating poorly again and we are checking to see what it would take to put it in good operating condition. If repairing the system isn't practical, the pneumatic conveying system should be re-evaluated. Drver Stack Clean-up; Messrs. Hlttner and Fussell will visit Rockdale on September 25 and 26 to establish objectives and consult with various equipment vendors who may have potential solutions for the problem. The following program has been proposed to Pittsburgh Xnvlrorxsenta1 Engineering: (l) Continue the services of Professor Harris toward the end of developing a lignite filter that could be tested at approximately 1000 efts. (2) Reinstate a vet scrubber testing program to evaluate performance ratings. (3) Re-establish the objectives of the program and prepare testing and installation schedules. (4) That our RFA 684 be reconsidered as a means of solving our dryer stack problem. H. A. SEMKEN HAS:S File copy routed to: G. W. Hutton H. A. Bcwer B. D. Cockrell C. H. Meyers H. D. Franklin J. H. Greene 411082 0713 * L u iV U) M H M 03 D 03 M sc w o > 03 < M ed H o O as )*5 .< c um r i t^i i BS O i?t <$ io I7 1 *Q <J vi (.j1*) oy <J ku \ 0 ? < S5 ^3 <Ji j <t*aor f j J *u ? 0 ; U,1 o* J* -oo 0o I? A 1 O in r * X. kJ o i 0 4 <o Vi ? J <JQ * ? t c < Z 5v5 I V rj o <* z o o ~ftl v>ii i 21 z fti j * u . t> fid fl 0 a 0 0 Of 0 o o <3 \iT vb w> TO3 4* >u. o to c eo a u & too $3 3 S E-I -I 0) S-g >VOtoi Cjtf & -t HC a) 4: a3 Ca r>* *a H co (V uu vo, cao Cl 8 u % 'Zo P < <uL * a; V) O c 3 oo H C &` 5 t55 03 3 *8 ' Vi J uO < &, tn 05 bC S 343 V c l* o u> *4 43 .* 60*0 C 1-1 Vi (0 p a! o V-. Cl, O 43 C ce a3 cC-il u a 1-4 43 43 c 3 O CB X (H3 Au tx Oa V4i *J a I 7' ^ vn C' -1 * <x i ^ `A uM li V i \3 V<L tV ^ j Oi u 5i VO L ? t\i T-s w^* f?i ^i 10 | W. tj VJ Vu o * o % J 51 _ In <r* M^ Ql(Ulj 5*1 * > Vki V> ss cg a OVi Eh n c 03 sS >8 4, S CD S! cP* 0c5 o05 43 o tl &Gl O Cm g> tH oC CD 3 U o 4J 3 411082 0714 SURVEYOR s M > es D w M E *4 M o < E J < H E (" D D K 411082 0715 8UKVH TOK o *1 0 ct 4 ru * 3 tX Remarks tt * 5* \ C**CuJ tUVoW-J- *^y>- -s 0 < * * tu CQ o 4 *c vv. i ip 2 L) r * A ->>e 8o rK _* IS 3 </l ' X Tot 2t v* O' 1 *> 2 >j Qt W u uZt- * i fa "~ i >` * K 7 <5 5 v j V? * SJ! 5o t^ -* 5W lJ >O f f i O M0JHAH03 Id e n t, I O p e ra tio n o r L o c a tio n 1 C ontam inant I E v a lu a tio n Method I E v a lu a tio n R e s u lts I <3 O <a e vs .Vo 9 M eh 3 1H0 > 2* 00 5to3 o* < H09 4O0* 0 4> <tPo P O XO> CPoO CO *X*H os JaoC to ti 0) c 0J cto 93 Q 0 v$ o c 0 o vij > X oto uo CD c J Jl 9 X) 38 rl CO 2 aw 3is O >h wb 32 to o O 4o* +0> 4(H0* oL 0 oc rH 0 XH ort O CX o UH J4=> < o Eh W H V c tKo tco ? po x: OH +> d.8 O C; .C to poto <Ox Eto W Oc c x: -a o <r4 c X4* Cc-1 B u a0) TJ acP I* rt oIX . 43 rH tD 13 vi) Q >*H 4C^O 411082 0716 411082 0717 swcraot 1 411082 0718 c. u WI S fl 0V1 c O 'k v1<T 4V> < 3-J 0 $o J < <3 i Ju ro ~i Q -# 7J v> J > Dm D 9 M tt W 90 K M M o * U. o w to r+toJ4 ij < M 0 O OS H CO M D D fc fal > r>OQH3H Co o ww000i O J1Z0 u41 3U ^4* k. SL O ^t&4 X*J UD o (S f T TJ rM3 c D fc tO < tl 0 u 7 tj 0 1 *3: X 0 t ^ V* \n > <* L 0J r >7j o .L s * ',1 r iu l -J <3 < ^ V*/1 "X Vy '' I. O * * -i T _ - <; f*0 ; ? t *-* <t <t 0 < C 0. r<0.1 <.) 'T t J <o u - t <3: <3. WJ ti < t> 6QcJ $ <oGH o 8 CO SX P c to p H 4ucJ 0t 130 40JJ & i 4(^0 4n* Q3 U0& < 8 fKc SP r4 Tc a c** J3 0i a- 8 8 3 ^ cu 44 5 O +j >_u O(l8*_ CL W 4J 0 ^2 Oo 411082 0719 s u > cc D 0 U SC U3 n o X 33 J < M 03 (0 a 3.* SJ 3c i. L >n tM ** j| Hi ^ "** -v5 C* til k * Uj c* a > t - 4\ s 3a <0f, *3J. 40 r4 > c 0 u a I U< CO 40 P 0) r-4 L C Cu O J< V O mu Xw 0' U L >r: G k c O -4 i! O ^ k < * >u rt o r~ L tXo IT a s o o -U UJ -l * 1 "c * ** * '* 14 rL XO <o t> ^ O l * o _ <t <* * ii 5 JC S4rl 0l 3 CJ 44 h tBo fe H -p OV ?G 40 p 40 a n o xi iO u o p cG o u: ad l, Li 31 u 6 vi vj X Loi a Co tO 0) Xi d o; w > 05f0i d O' - a: wG --< fc= > to o XO 3 H L O 4-> V 0> p 03 L v5 o UG OC r-1 o x: r-l VX o h x: L *5 o HU t Gc X c tcc ? o Jc p- taoo p r-E 0t .1CJ of*. 0u to c fi Q> P oO J= CC tc XI p rar toc* t. i". i- ir, d c o r.'i L 3 .'J pa G C & I u o N 411082 0720 SUItT P O l <rI w V*uI M fS H M > a & co M % 14 O >- < M tf H CO D Q SC B e 3 i5 ro> re 411082 0721 SUHTPLH_____________C 4 i^