Safety & Security · SOUMEN DEB 9TH AUGUST 2018 WELCOME Safety Symposium & Exposition 2018,...
Transcript of Safety & Security · SOUMEN DEB 9TH AUGUST 2018 WELCOME Safety Symposium & Exposition 2018,...
SAFETY IN OXYFUEL PROCESSSOUMEN DEB
9TH AUGUST 2018
WELCOME
Safety Symposium &
Exposition 2018, Kolkata
SAFETY & SECURITY
Safety In Oxyfuel process like Gas
welding cutting Brazing Heating
Oxyfuel Heating process
LPG & O2 CYLINDER BLAST
HIMANSHU ENGINEERING WORKS
YAMUNA NAGAR
August 7, 2006
Gases In Use..Oxygen
Acetylene
LPG/Propane
Flame Temperatures 2800 to 3100
Gas Density
“Heavy” gases flow
like liquids
Explosion Limits
LEL (vol %) UEL (vol %)
Acetylene C2H2 2,8 93
Ammonia NH3 15 28
Arsine AsH3 4 10
Butane C4H10 1,8 8,5
Natural Gas (Methan) CH4 5 15
Ethylene Oxyde C2H4O 3 100
Hydrogen H2 4 75,6
Gas
Explosion Limits
Case Study - Cochin Ship yard
COCHIN SHIPYARD FEB 2018
OXYFUEL GAS FLASHBACK ARRESTORS
Loud noise caused by
momentary stoppage of gas flow
=> Resulting in momentary extinguishment and reignition of the flame
Cause : due to
obstruction by an
overheated or
damaged tip
Burning back of flame into torch tip or gas hose
Causes :
Improper gas press. settings
Distorted or loose tips
Damaged seats
Kinked hoses
Incorrect Nozzle Selection
Clogged or damaged tips
Improper gas supply
Gas Mixing ratio
Backfire Flashback
OXY-FUEL EQUIPMENT – THE TECHNOLOGY IN FLASHBACK ARRESTORS FLASHBACK ARRESTOR MODEL “DGN”
Inlet Gas non- Flame arrestor Temperature-
filter return valve sensitive
cut-off valve
FBA – DGN , ACTUAL CUT VIEW
TYPES OF FLASHBACK ARRESTORS
USES OF 2 PIPE CUTTING TORCHES
FLASHBACK BLAST AT TORCH HANDLE- 2 PIPE TORCH
UNSAFE PRACTICE IN OXYFUEL CUTTING : USES OF 2 PIPE CUTTING TORCH
UNSAFE 2 PIPE TORCH AND VIEW OF FLASHBACK BURST 3 PIPE CUTTING TORCH – THE SAFE ONE
CYLINDERS OUTSIDE THE PLANTS
ACETYLENE GAS BANK WITH ÄSG” SAFETY DEVICE FITTED AT JSPL - RAIPUR
THE TECHNOLOGY :
BU13 – 2X10 OXYGEN GAS BANK @ JSPL RAIPUR
WITH SAFETY INSTRUCTION BOARDS
NITROGEN MANIFOLD HEADER
ECONOMICAL WITH TORNADO
300 & F11 FILTER
HOWDEN SOLYVENT
TAPPING POINT REGULATORS – ET65 WITH
BALL VALVE & SS BACK UP PLATE
THE GREY-MATTER TECHNOLOGYApplication Usage
Training
Ownership
Monitoring
Awareness & Assessment
Thank you