Document LJLmXMg0vLO28Yoe8O5MrNKjQ

Company: DOW CHEMICAL Process: POLY-B Node: 21 Page: 1 H------------------------------- ---------------------- -- ---------- ---------- --------- ------------- -------------- K Node: 21 DUMP LINE REMOVAL PROCEDURE -ameter: Maintenance Intention: POSITIVE LINE ID -I-------------- ------+--------------------+------------- ----* -------- 1------------- ----------------------H------------- ------------------- ------H------H |GUIDEWORD|DEVIATION| POSSIBLE CAUSES | CONSEQUENCES | RECOMMENDATIONS |BY | +------------------- +------------------- +------------------------------------- +--------------------------------------- +------------------------------------- +------+ No Not ID'd POINT TO WRONG SPILL WRITTEN RF LINE PERSONAL INJURY INSTRUCTIONS MARK WRONG LINE EQUIPMENT DAMAGE IGNORANCE EAST VS WEST DEVIATION IN OPERATION PROPER FIELD LABELS RF LINE CRAFT REASSIGNED ON SITE RF POOR RELIEF INSPECTION INEXPERIENCE WRONG LINE LABEL RE-EVALUATE SAFE RF POOR TRAINING WORK PERMIT USE RUSHED BY OPERATIONS INATTENTION WRITTEN RELIEF RF OPERATORS/CRAFTS RF MAN TOUCH LINE DEVELOPE RF PROCEDURE TO POSSITIVELY ID LINE AT ALL ENDS +~ +--------------- +------------------------------+------------------------------- +------------------------------+------+ 0 A lpj , ~ C0^NTlt Company: DOW CHEMICAL Process: POLY-B Node: 21 Page: 2 -I---------- -------------------------------- ---------------------------------------------------- ----------------------------------------------------------------(- Node: 21 DUMP LINE REMOVAL PROCEDURE rameter: RED TAG VALVES Intention: SYSTEM ISOLATION H ---------- ----- I----------- ------ --I -------- --------------------- --H---------------------------------- ----- 1----------------------------------------I-------- I- |GUIDEWORD|DEVIATION| POSSIBLE CAUSES | CONSEQUENCES | RECOMMENDATIONS |BY | +------------- +-------------- +----------------------------+---------------------------- +--------------------------- +---- + No No RED TAG VALVES +------------- +-------------- +----------------------------+---------------------------- +--------------------------- +---- + A 1 PI 137 CONFTDETNTrAt Company: DOW CHEMICAL Process: POLY-B Node: 21 Page: 3 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Node: 21 DUMP LINE REMOVAL PROCEDURE rameter: RED TAG LINE Intention: POSITIVE LINE ISOLATION H---------------- 1---------------+---- ------------------ -------------- ----+------+ |GUIDEWORD|DEVIATION| POSSIBLE CAUSES | CONSEQUENCES | RECOMMENDATIONS | BY | +------------------- +------------------- +------------------------------------- +--------------------------------------- +------------------------------------- +------ + No No RED IN A HURRY SAME AS MAIN. LINE TAG LINE NOT ID'D Less Less RED TAG LINE PROCEDURE OUT OF DATE COMPUTER LIST NOT UP TO DATE FORGET TO ENTER ONE FROM LIST WRONG TRAIN SAME AS MAIN. LINE NOT ID'D LOST TAG ON WAY TO FIELD SAME AS MAIN. NOT ID'D LINE TAG IN ORDER AUDIT AND UPDATE COMPUTER LIST RF RF UPDATE PROCEDURE RF TAKE COPY OF RED TAG MASTER TO FIELD TO CHECK RF REFERENCE RF PROCEDURE TO COMPUTER TAG LIST VISUALLY INSPECT FOR UNDOCUMENTED VALVES RF I-. _e More RED SEE LESS RED TAG LINE TAGGING UNWANTED SHUTDOWN CAN'T BLEED LINE LINE NOT TOTALLY DEPRESSURED SAME AS LESS RED TAGGING RF AsWellAs AsWellAs SAME AS NOT RED SPECIFY SEQUENCE RF RED TAG TAGGING LINE DO STEP D +-------------- +-------------- +--------------------------- +----------------------------- +--------------------------- +---- + DO A 2% 30 CON^rOENTl^ Worksheet HAZOF-PC 1.00 Company: DOW CHEMICAL Process: POLY-B Node: 21 Page: 4 --------------------------------------------------------------------------------------------------------------------------------------------------------------------- -- ! Node: 21 DUMP LINE REMOVAL PROCEDURE ! ! Parameter: DISCONNECT AIR LINE Intention: SAFELY REMOVE DUNP LINE ! *---------------------+------------------- +-------------------------------------- h--------------------------------------- +------------------------------------- +------ + :guideword:deviation: possible causes : consequences i recommendations iby : DO A 121139 CONFIDENTIAL Wor ksheet HAZOP-PC 1.00 Company: DOW CHEMICAL r zess: POLY-B Node: 21 Page: 5 -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ } Node: 21 DUMP LINE REMOVAL PROCEDURE ! ! Parameter: Relief Intention: REMOVE HAZARDOUS CONTENTS ! +-------------------- n-------------------+------------------------------------- +-----------------------------------------1--------------------------------------+------ + IGUIDEWORDIDEVIATION! POSSIBLE CAUSES i CONSEQUENCES : RECOMMENDATIONS 'BY ! oo A l?ll40 CoNF rbnttal Worksheet HAZOP-PC 1.00 Company: DOW CHEMICAL Process: POLY--B Node: 21 Page: 6 +----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ i Node: 21 DUMP LINE REMOVAL PROCEDURE ! i Parameter: DISCONNECT FLANGES Intention: VERIFY NO TRAPPED CONTENTS i +------------------- +--------------------- i--------------------------------------+----------------------------------------+------------------------------------- +------ + :suideword;deviation; possible causes ; consequences : recommendations :by : DO A 121141 confidential