Transcript Slide 1
EDUCATIONAL GOALS: • EDUCATE NONPROFESSIONALS IN GENERAL EXPLOSIVE SAFETY • IMPROVE EXPLOSIVE SAFETY ON WELLSITE • REDUCE EXPLOSIVE ACCIDENTS TO ZERO DON’T LET THIS BE YOU! CAUSES OF INCIDENTS • FAILURE TO FOLLOW PROCEDURES • ELECTRICAL ENERGY • CONFINING PRESSURE • IMPACT CAUSES OF INCIDENTS • HEAT • OUT OF SPECIFICATION USE • MANUFACTURER’S DEFECT • UNKNOWN TYPES OF EXPLOSIVES • LOW EXPLOSIVES • PRIMARY HIGH EXPLOSIVES • SECONDARY HIGH EXPLOSIVES LOW EXPLOSIVES • POWER CHARGES – SETTING TOOLS, CHEMICAL CUTTERS, CORE GUNS • LOW SENSITIVITY TO HEAT & SHOCK • PRODUCES LARGE QUANTITIES OF GAS • MUST BE CONTAINED TO DO WORK PRIMARY HIGH EXPLOSIVES • DETONATORS • IGNITERS • VERY SENSITIVE TO HEAT AND SHOCK • USED TO INITIATE THE EXPLOSIVE TRAIN OR POWER CHARGE DETONATORS AZIDE “MATCH” HEATING ELEMENT LEG WIRES SECONDARY EXPLOSIVE DET CORD DETONATOR SECONDARY HIGH EXPLOSIVES • • • • SHAPED CHARGES, SEISMIC DETONATOR CORD EXPLOSIVE CUTTERS LESS SENSITIVE TO HEAT & SHOCK THAN PRIMARY H.E. • DOES NOT NEED TO BE CONTAINED TO DO WORK HSC PERFORATING TUBING CUTTERS CHARGES EXTERNAL PERFORATING CHARGES DETONATOR CORD DETONATOR 25,000 F.P.S.+! EXPLOSIVE TRAIN SHAPED CHARGE HOW IT WORKS EXPLOSIVE SHAPED CHARGE DONUT SHAPED CHARGE DETONATOR DET CORD BOOSTER ASSY EXPLOSIVE JET CUTTER Ragged Cut Stuck Point IGNITER GAS GENERATOR GRAIN BrFl3 GAS CYLINDER CHEMICAL CUTTER Grain Generator Driven Chemical Release Clean Cut Stuck Point 0.000 SEC 0.001 SEC 0.003 SEC 0.000 SEC 0.001 SEC 0.003 SEC 0.004 SEC 0.2 SEC BrFl3 Chemical Cutter 0.002 SEC BrFl3 on Steel BrFl3 on Wood 10 STEPS TO SAFELY WORK AROUND EXPLOSIVES 1. HAVE A “TAILGATE” SAFETY MEETING • AFFECTED PERSONS ATTEND • VERIFY JOB REQUIREMENTS • LATEST WELL CONDITIONS • SITE-SPECIFIC SAFETY ISSUES • WEATHER CONDITIONS • SET UP AND POST EXPLOSIVE SAFETY AREA AND SIGNS 2. CHECK FOR STRAY VOLTAGE Explosive Fatality • Seismic Charge Loader killed • Assistant treated and released • Static Charge built up from wrapping tape • Possible sub-quality detonator • Possible non-API 67, nonresistorized detonator CHECKS FOR STRAY VOLTAGE • POWERED UP CHECKS • UNIT, RIG, WELLHEAD, RACKS, EQUIPMENT, ETC. • ELECTROMAGNETIC FIELD CHECK •0.25 VOLT LIMIT 3. GROUND EVERYTHING • RIG TO UNIT • WELLHEAD TO UNIT • GROUNDING LINES TO OTHER EQUIPMENT AS NEEDED • EVERYTHING TO THE SAME ELECTRICAL POTENTIAL 4. CHECK FIRING CIRCUIT • NEVER “CHECK-FIRE” THROUGH THE DEVICE! • POWERED VS CONTINUITY • “BLEED” ELECTRICAL ENERGY FROM CIRCUIT BY SHORTING LINES TO GROUND. 5. “SAFE” AND SECURE THE FIRING CIRCUIT/AREA • POWER OFF GENERATORS, COMMUNICATIONS DEVICES • FIRING CIRCUIT IN “SAFE” • LOCK-OUT FIRING CIRCUIT WITH KEY • KEY IN POSSESSION OF PERSON ARMING DEVICE 6. ARMING SAFELY • MINIMIZE EXPLOSIVE EXPOSURE – ONE DEVICE AND ONE DETONATOR AT A TIME • USE SAFETY TUBE • ELECTRIC BEFORE BALLISTIC – LINE TO DEVICE, DETONATOR TO DEVICE DETONATOR SHOT DETONATOR DAMAGE GALVONOMETER SAFETY TUBE DETONATOR SAFETY TUBE DETONATOR SAFETY TUBE 7. POWER-UP BELOW 200’ MINIMUM • BELOW SEA BED OFFSHORE • KEEP CLEAR OF WELL ON START-UP • COMMUNICATIONS CAN RESUME 8. SECURE POWER AT 200 FEET MINIMUM • SHUT ‘EM DOWN! • NO RADIOS OR CEL PHONES • CHECK AROUND AREA TO MAKE SURE. • 12 VDC LIGHTS ON UNIT OK or PORTABLE LIGHTS 9. ASSUME A MISSFIRE • CLEAR AREA • WATCH FOR TRAPPED PRESSURES • DIS-ARM THE REVERSE OF ARMING • BALLISTIC BEFORE ELECTRICAL – DETONATOR FIRST, THEN DEVICE 10. CLEAN UP AND INVENTORY • COUNT CHARGES AND DETONATORS • SECURE EXPLOSIVES IN PORTABLE MAGAZINES AND LOCK ‘EM UP! • CLEAN UP AREA OF ALL DEBRIS • SECURE ALL USED AND UNUSED DEVICES THE 10 STEPS TAILGATE MEETING STRAY VOLTAGE GROUND EVERYTHING CHECK FIRE SAFELY “SAFE” AND SECURE AREA ARM SAFELY POWER UP BELOW 200 FT. POWER DOWN ABOVE 200 FT. ASSUME A MISSFIRE CLEAN UP AND SECURE API RP-67 • EXPLOSIVE SAFETY GUIDES • EDUCATION AND TRAINING • ANNUAL REVIEWS • ENGINEERING CONTROLS (KEYS) OTHER RESOURCES • BUREAU OF ALCOHOL, TOBACCO, FIREARMS & EXPLOSIVES (BATFE) • DEPARTMENT OF TRANSPORTATION (DOT) • INSTITUTE OF MANUFACTURERS OF EXPLOSIVES (IME) • THE A.E.S.C. “GREEN BOOK” • SERVICE COMPANIES OFFERING THESE EXPLOSIVE SERVICES WHAT CAN I DO? • STAY CLEAR IF NOT DIRECTLY INVOLVED • WATCH TO SEE IF THE 10 STEPS ARE TAKEN • DON’T RUSH THE OPERATION • PAY ATTENTION TO CHANGING CONDITIONS. • THINK AND ASK QUESTIONS • SHUT DOWN OPERATION IF IN DOUBT! ...AND YOU’LL HAVE A SAFE EXPLOSIVE OPERATION REMEMBER!