Document RJBpZb2yZaJgXgG1V1aQ3ej27

DATE: AUGUST 2, 1990 PLAINTIFF'S EXHIBIT SH-2221 FROM: A. SVOBODA, HEALTH & SAFETY DEER PARK MANUFACTURING COMPLEX TO: P. T. HAMILTON, CAT CRACKING & GAS DEER PARK MANUFACTURING COMPLEX SUBJECT: INDUSTRIAL HYGIENE MONITORING RESULTS FOR THE CAT CRACKER Industrial hygiene-monitoring results from a survey conducted at the Cat Cracker July 9 through August 2, 1990 are attach ed. The survey was conducted to measure sulfur dioxide (S02), carbon monoxide (CO), hydrogen sulfide (H2S) and total dust concentrations near a leak in the 3rd stage underflow line. Initial monitoring during the survey identified the extent of potential exposures and two regulated areas were established. Entry into these areas required goggles and respiratory protection to minimize personal exposures to catalyst dust and S02. Water sprays were then directed at the leak to further reduce emissions and IH monitoring was continued on a daily basis until the situation was resolved. No injuries occurred and no personal exposures were reported as a result of the leak conditions. The entire Cat Cracker Unit was regulated as a "Goggles Required" area to prevent possible eye injuries from catalyst dust emissions from the leak. A second area inside the unit boundaries was regulated as a "Respiratory Protection Required" to minimize potential exposures to S02. Water sprays were directed on the leak and emissions from the leak were reduced considerably. Grab sample measurements of airborne catalyst dust were minimal, S02 measurements were less than 2 ppm and CO and H2S concentrations were not detected. Operations personnel conducted additional long-term monitoring of the internal regulated area for S02 using Drager diffusion tubes which do not require a sampling pump to carry out the measurements. The tubes can determine mean contaminant concentrations over a time period of eight hours or less. No S02 concentrations above the OSHA Permissible Exposure Limit (PEL) of 2 ppm were measured using this technique. LAM 002350 DPMC-08506 Grab sample monitoring results are summarized in Attachments 1 and 2. If you have any questions please contact me at Ext. 6-7102. Angie Svoboda Attachments cc: W. B. Austin J. T. Flynt HSB Satellite AS Chron LAM 002351 DPMC-08507 ATTACHMENT 2 DATE TIME LOCATION 07-20 12:30PM East of CCU control room, by p-3764 TOTAL DUST CONCENTRATION 8-12 mg/m3 North side of control room, by smoking pad. 2.6-4.5 mg/m3 North side of compressor shed. < . 5 mg/m3 North side of unit, by outside barricade. 2.8-3.2 mg/m.3 Directly north of leak, by outside barricade. < 5 mg/m3 South side of control roomi, ;.> mg/m3 .by compressor snea. A. 11 ocher areas. . !: ;::g/rc' W---at her conditions: 86 degrees, wind from cte East C o Mi- 07-21 03:00?K Approximately 15-20' N/E side of CCU control rcvE. - . a mg/m3 Un ease wc-ocen platform, by the leak. L, . 6 " . c r.u-'/ i;i On west, wooden platform. 2.1-L.c mg/m-U North side of control room , : . 5 mg/m3 by smoking pad. N/E side of leak, by inte rn a 1 car v i c a c: e . 1.6-2.0 mg/ rr. All ether areas. , . 5 tng/m2 Weather condA, itions: wind from the Ease/Sou ~ 1'ivE.* cict, . LAM 002352 DPMC-08508 DATE TIME LOCATION 07-2:; 01: 30FM By F-9764. N /W sice of TOTAL DUST CONCENTRATION 2.0-3.8 ing/mS North of control room, by smoking pad. .7-1.0 rmg/ml: By CCU control room door, east side. 1.2-1. ft mg/u,3 North of control room. South of V-602. All other areas. .5-3.2 mg/1-3 < . t mg/r.i 07-23 Ol'-ISPM East, side of leak. bv V -1417. . o mg/mo East, of the leak, at approx. 3-5 mg/m3 -15-20' away from source. Third level of Regan structure N/E corner. Souhe side of leak. 14-.; my/! A 1 1 nher a rear . wind from h/E / 07-24 c-outr.west sice, woeder. platform. Southuest side, im st ei of wooden o rm. North of leak, 15-20' from source. *- r; .o' - - r.tj / Third level of Eeger structure, N./E corner. i-u mg/mo Northeast side of leak, South of furnace <1.0 mg/rr.3 All other areas */m3 Weather conditions: 8c degrees, wind from the South at 2 mnh LAM 002353 DPMC-08509