Monthly Archives: January 2016

Lockout Devices

BI-TORQ® Valve Automation’s lockout device for automated quarter turn valves prevents accidentally opening or closing of a critical shut-off device from a remote location like a PLC. The valve can be locked out in either the open or closed position, allowing maintenance personnel to work on other parts of the system without concern that the valve will accidentally be opened. The most common assembly features a heavy-duty lockout pin and a convenient storage device built in to the bracket so the pin does not get lost. BI-TORQ can custom fit this lockout device on any quarter turn ball, butterfly or plug valve mounted to any pneumatic or electric actuator.

lockout kit breakdown

KEY FEATURES

  • Universal design for lockout in open and/or closed positions
  • Designed to OSHA standards
  • Protects personnel and product in critical applications
  • Carbon steel or stainless steel construction
  • Heavy-duty lock-out pin
  • Convenient storage
  • Standard padlock

The unit shown below was designed as part of a system for processing titanium. The flanged valve was installed at the beginning of a critical process line and required a lockout in the closed position so that the valve could not be accidentally opened while personnel maintained other system components. This also helped prevent the loss of any material in the pipeline due to improper actuation. A limit switch was added later so that plant personnel could see if the valve was in the correct position prior to lock-out.

Lockout kit for process

Fusible Link Application – Lubricants

APPLICATION: EDM MACHINING CENTERS. (ELECTRICAL DISCHARGE MACHINING)

PROBLEM: A FIRE BROKE OUT AT A  PLANT WHERE EDM MACHINES ARE OPERATING. FOLLOWING AN INVESTIGATION BY FM GLOBAL, IT WAS DETERMINED THAT THE FLAMMABLE EDM LUBRICANT CONTRIBUTED TO THE FIRE AFTER THEIR LINES WERE COMPROMISED.

SKF combo2

SOLUTION: FM approved FLP series fusible link valves (also known as thermal shut-off valves) were mandated on all lubricant lines feeding the EDM machines. The plant currently has 4 EDM machines with several lines feeding various portions of the machines.

FOLLOW UP: The company’s safety department has decided to be more comprehensive with their fire safety requirements. They have determined that FLP series fusible link valves should be installed on all lubricant lines.