ESAB CROSSBOW - Page 15

ESAB Cutting Systems
CROSSBOW Page 15
TOXIC FUME HAZARD.
Hexavalent Chromium Cr(VI) is a toxic chemical within fumes. It is created in a variety of processes,
including plasma cutting of stainless steel. If you plasma cut stainless steel, you will need to comply
with the following to protect your employees from Cr(VI) exposure.
• Exposure to hexavalent chromium must be below the permissible exposure limit (PEL) of 5 µg/m3
for an eight hour time weighted average.
• Workplace or job-specific monitoring must be done to establish and quantify areas of potential
exposure.
• Employees who may be exposed to Cr(VI) must be informed and corrective measures
implemented.
• Protective clothing and respiratory protection must be given to employees who have potential
exposure.
• Medical surveillance of employees with potential exposure must be conducted.
• Potential exposure areas must be indicated with warning signs containing the text shown at left.
• Engineering control must be used to reduce exposures to safe levels.
• Specific details of the standard are complex and may require assistance from occupational health
professionals to reach full compliance.
GAS SUPPLY SYSTEM CONTENTS UNDER EXTREME PRESSURE
Weakened gas system components can explode or release toxic gases causing serious injury and
death.
• Check for leaks at gas connections on all regulators, valves, gas lines, and torches. Ensure all are
in proper working condition before operation begins.
• All hoses and cables should be inspected regularly & replaced if necessary.
• Gas valves should be opened slowly, and shut off when machine is idle. Bleed off line pressure
when machine is inactive.
• Close gas valves before servicing any gas connections, fittings, lines, or regulators.
• Never disconnect any system component that is thought to be under pressure.
• Bleed off regulators when changing gas cylinders. Secure ALL cylinders to prevent falling and
vessel puncture.
• Depressurize system before performing any maintenance, disassembly or repair.