Document VGz0eX120yKO3n7m5myrpdn08

AR226-2025 a t t a c h m e n t 2. JOB REVIEW SUMMARIES EID089666 AJP000604 1) Q8PF GRANULAR POLYKETTLE (Bud Yoho) OBSERVATIONS of time soent in control room. Sometimes on rainy days, control room ' venti 1atioiTmaiTpul 1inexhausts from other operations, causing false panel alarms. - Run about 3 batches/shi ft/polykettle. r-fl solution is taken from a bottle in ingredients hood equiped with a diLlnser p!mi aSd carried to the cell aria in a closed plastic bottle, where the bottle is emptied into the polykettle at the start of the next batch. Rubber gloves are worn and changed every shift. - Cell area now has very good ventilation due to TFE concerns. If this was e5er ^ exposure route, which is not likely, it isn't any longer. - The dispenser bottle is refilled from a larger C-8 storage tank outside the ingredients hood. There is no drip pan, and C-8 has accumulated on the floor below the spigot. - Operators in this job have varying overtime habits. Some will accept overtime to clean the FP&D autoclaves, others will not. CONCLUSIONS - Glove usage practices can be an important exposure variable. - Need a drip pan by the C-8 storage tank right away. - Overtime practices can be an important exposure variable. - Should take some C-8 air samples in the control room on a bad day. CONCLUSIONS FROM INTERVIEWS (7) - Should do air monitoring by B124 smoking area. - Confirms conclusions from job review. EID089667 AJP000605 2) I8PC FEP MET FINISHING (5. B. Hensley, Bob Lewis) OBSERVATIONS - Drop from coagulator to blend tanks used to be a terrible dust problem which Is now in d o s e d pipes. There are still occasional problems, but nothing like before. - Skimming solids off the sump (1/2 hour, 1-2 times/shift) is a very dusty job that also is ergonomically poor. Only recently was a respirator required. When operational, new vacuum system should eliminate operator exposure. - "Clean" room is a respirator area because of high C-8. It 1s also hot and dusty. Operator is there about 10 minutes, 3-4 times/shift. - 9050 Packout (Jurassic Packout) 1s a dusty, hot, clumsy task using equipment * designed for another package. New packout station in included in project funds. CONCLUSIONS - If skin contact with polymer dusts is an important C-8 exposure route, this area should see major improvements in blood levels, as three significant improvements are Implemented. EID089668 AJP0006G6 ,, 18PK fhp a K n / o i s K * 0 - o b s e r vi/aRtTiIoOnHsS * " " r) ld t \m divided b ^ w e n W r ! ^ a: sm *wrr"^inK;,ht^Tat.1^"..~*M*pK~urezto&w si ts r"'"t finishing. Thus tner concuusiohs c_8 are b6,,,9 . u r t w i r f . w p p .v K P t - StUdy' AJPG00607 EID089669 4) 18P8 FEP EXTRUDER/OVEN (01m Broadwater - oven, 01m Lauer - ext.) OBSERVATIONS - Two jobs will soon be combined, but operators already work both on overtime. - Oven area Is dusty. - Host time spent In control room. - Field work Is mostly troubleshooting, mainly unjamming trays (2-3 tlmes/shlft, 5 minutes/jam, used to be more frequent). - Sometimes will work near hot slab without respirator (before cooling tower, on top of oven). - Extruder area is much less dusty that oven area and has gotten even better after the wet finishing drop was enclosed. Powdery polymer is not handled in this area. - Fumes from wrapped FEP slabs can be pretty bad due to HF, so if C-8 Is present too, this is not a likely exposure route. CONCLUSIONS * Should do air sampling near oven trouble spots, ~ Since so much time is spent in control rooms, air monitoring 1n all of them may be a good idea. , - Control of dust exposure still important. AJP000608 EID089670 S) 08PE FP&D AUTOCLAVE (Steve Lutz) OBSERVATIONS - Host time spent in control room, - C-8 is handled in closed system. - Autoclave cleaning is a hot job with potential for skin contact with coagulum. Only cotton gloves are required, but some operators use inner rubber gloves. Three separate jobs; some operators too big to do them all. Takes 1/2 to 1 1 / 2 hours. Frequency has gone from every 25 batches to every 400 batches. Steve notices taste in throat like when cleaning FP dryers. - Possible to breathe air from wax decanter for about 5 minutes/shift while working near open lid. - Overtime practices vary. Some operators will never clean the autoclave. CONCLUSIONS - If autoclave cleaning is a major exposure route, this job should see reduced blood levels in the future. CONCLUSIONS FROM INTERVIEWS (2) - Confirms conclusion from job review. EID089671 AJP0G0609 I g) 18PA FEP POLYKETTLE (Ken Lauer, Tammy Zoller) OBSERVATIONS - Spend 9054 of time in control room, - operators do not clean the claves. - Overtime practices can be significant, since other jobs worked include wet finishing and 9050 packout. Coagulator platform has high C-8 air levels. Spend about 5 minutes at a time there, either sampling batches or adding catalyst to weigh tanks. CONCLUSIONS Should consider respirator use while on coag. platform. ED089672 AJP000610 7) 08PI FINE POWDER FINISHING OPERATOR (DRYER) (JEFF WALKER) OBSERVATIONS - The operator spends 3055 to 4055 of his/her time in the control room. The rest of his/her time in the field and trouble shooting equipment, changing filters, etc. - The operator has to open the dryer to take care of paper breaks. The south end of the dryer by the blend tank has the greatest potential for C-8 exposure. The C-8 can be seen foaming when the dryer is being hosed down. - There is also a great potential for operators getting splashed with a mixture of C-8, water and wax from the blend tank discharge chute when cleaning the blend tank. The chute is placed in a 55 gallon waste drum and the operator has to stand close to the chute to open a manual valve * with a chain. The possibility of making a shroud cover for the waste drum was discussed, but the operator has to be able to see the drum level clearly so it does not overflow and go into the nearby trench. This trench goes directly to #5 outfall. - There is believed to be C-8 in the wax that the operators shovel into scrap drums on the second floor. This is mixture of coagulam and dispersion. _ operators clothes and shoes are covered in dispersion. ' CONCLUSIONS - Some improvement is expected when the paper is replaced with permanent belts (11/96, 5/97), - Use of Tyvek* PPE (coveralls, booties) should be required for certain messy jobs, such as dryer or blend tank cleaning. - Hay need to check C-8 air levels when operators are in dryer. CONCLUSIONS FROM INTERVIEWS (4) - Dryer cleaning may be task with most exposure potential. - Leaving the area while the dryer cools and clears of mist may reduce exposure. AJP000611 EID089673 > 8) 08PH HOMQPOLYHER DISPERSION (6RE6 SMITH, JEFF LEWIS) OBSERVATIONS The operator pours 15 lbs, of C-8 from a plastic m into the Stab tanks on certain products. The C-8 is drained from the storage tank by the insredUnts hood into tho plastic Juj. This is done approxljatol, 2 1 a month, 4 batches per each 12 hour shift. The only PTC required to handle filling or dumping the jug is playtex rubber gloves and chemical goggles. _ The operator cleans the filters on the Stab tanks every batch. The filter is removed and flushed with water. ~ There is a ventilation system over the Stab tanks, but does not work well according to the operator. - The Dispersion Packout operator packs dispersion in several types of containers such as tote bins, fiber drums and pails. The hose from the discharge line to the tote bins placed directly into a bung type opening on the container. The only exception to this is when PFA is packed in the tote bins and the port is removed from the top of the tote bin creating an 8" opening. The only PPE required to handle the filling equipment Is latex rubber gloves and chemical splash goggles. - There area frequent filter changes on the discharge of the storage bins. This is a messy job, with water and dispersion splashing. - 8 ounce sample jars are taken from the storage tanks. PPE required is latex rubber gloves and chemical splash goggles. ) - The operator cleans the storage tanks (3) and the form tank with a water hose. There is splashing of dispersion and water. There is a ventilation system over the tanks. The operator said it does not work properly. - At times the operator has to hose out the return tote bins from the vendor. - Operators clothing and shoes are splattered with dispersion. CONCLUSIONS - Ventilations systems over the various tanks should be made to work properly if they are truly needed. - There is considerable chance for skin contact. Individual neatness could be a major exposure variable. - PPE requirements should be reviewed. CONCLUSIONS FROM INTERVIEWS (2) - Confirms conclusions from job review. EID089674 AJP000612 9) 08PM C-8 DRYER RECOVER (RON CHANEY) OBSERVATIONS - Filter changes every 3 days* 7 filters each change, - Operator changes other filters in area monthly. - The operator wears latex rubber gloves and chemical goggles to change the process filters. - The operator pumps fresh C-8 1 to 2 times a week. Required PPE is latex rubber gloves, chemical goggles and long sleeve shirt. - The C-8 tote bins completely empty as does the flex hose. The pump is a air pump and is not process driven. - All H&V filters are changed in area. There are filter changes going on somewhere in the area weekly. Every 3 months to 6 months there are some large filters on the roof that the crane sets up that have been tested and according to the operator are known to have C-8 residue in them* - Major changes have taken place in this job as the ion exchange columns were replaced with a reverse osmosis unit. CONCLUSIONS - Exposures from dusty filters should be better characterized by air sampling and by analysis of the C-8 content of the filter dust. - Chance of skin contact from splashes does not seem great. EID089675 AJP0D0613 10) 08PJ FINE POWDER PACKOUT {WILHA ELLISON, HELEN SEEBAllGH) OBSERVATIONS - The operator wears the clean room lab coat, bonnet and booties. - The air in the room is constantly filtered. - About 2 to 3 times a week, the product changes on the packout lines and the chutes have to be cleaned. CONCLUSIONS - Exposure on this job appears minimal. - Overtime on other jobs may be the only significant exposure route. EID089676 AJP000614 11) 18PD FEP PACKOUT (R06ER PARSONS) OBSERVATIONS - Some of the packout operators relieve and or work overtime on the extruders and the ovens. - Dust accumulation can be found on top of the sparge bins, lines and flex hoses. This is most likely carried over from the ovens. - The packout operator assists with filter changes in the area. CONCLUSIONS ' - Overtime work in other Jobs is probably the major exposure route. AJP000615 EID089677 (12) 18PJ PFA/FEP BEAD (ROB SMITH) OBSERVATIONS - A lot of powder 1n the oven tray up room 5e 1 uftf^ This is not a routine material, but when it is done, it usually lasts for about 9 days. - Ventilation system in oven room is not sufficient Thi nnprator attaches a flex hose to either a tote bin or drops it in a S sS t s s " s # ; -siiS'r?Siy required in the oven room to tray up or packout. - Housekeeping may have deteriorated. CONCLUSIONS aceAlthough some messy material handling takes pi with both liquid dusty streams, this should be improved as a result of planned QA and environmental projects. AJPGQ0616 EXD089678