What is the difference between a seal open and open?
CSO/CSC (Car Seal Open / Closed) valves are sealed in either position with a seal that can be easily removed to operate the valve. A LO/LC (Locked Open / Closed) valve is a valve with a much more secure, cable and lock, that will require a key to operate the valve.
What is lock open valve?
Locked Open (LO) Valve The Locked open valves are a kind of isolation valves on the inlet and outlet of a PSV that must remain open during normal operation in order that they can protect the equipment on which they are mounted.
What is CSO in valve?
CSO stands for Car Sealed Open. The Car Seal is nothing more than a wire loop with a lead seal across its ends, through the valve wheel or lever.
What are the purposes of CSC CSO in piping?
Generally used on process critical valves to prevent inadvertent or accidental operation of the valve. Car Seals (CSC) on lever operated ball valves, isolating a safety relief valve.
What does car seal open mean?
Car seals are used to seal valves in the open/closed positions. The term derives from a device used to seal the cargo on railway cars. Much like the seals you sometimes see on the back of container lorries. They provide evidence of any tampering with the contents of the car or container.
What is a car seal program?
A car seal is a disposable device used to lock or seal a valve to prevent tampering or inadvertent operation.
What is lock open and lock close?
Locked open / closed means just that, i.e. to open a padlock that is kept secure and opened only against work permits, etc.
What is LC and Lo valve?
A locked valve is a valve which is designated on the Process and Engineering Flow Scheme (PEFS) as being either Locked Open (LO) or Locked Closed (LC). Locked valves are those valves identified during the design phase, or in subsequent reviews, as being essential to the safety and integrity of the plant or facility.
What is lo valve?
What is Carseal?
Car seals are used to seal valves in the open/closed positions. Very simply, the terms describe the need to lock (seal) a valve to prevent operation either in the open or closed position. The device to achieve this is a Car Seal. The term derives from a device used to seal the cargo on railway cars.
What is seal vehicle?
Car seal devices lock or ‘seal’ a valve in the open, closed or mid position to prevent unauthorized operation of the valve. Valve operation can only take place by cutting the seal, thereby giving evidence of either tampering, or activity by an authorized worker.