VALVE INTERLOCK
Valves have a prime safety function in many process industries.
The opening and closing of valves in the wrong sequence can have disastrous
consequences. Controlling the sequence of events in which process activities
are conducted, has been achieved by documented instructions. However, this
system is susceptible to ‘human error’. Failure to interpret instructions
correctly, work load, stress, ignorance of the system, can all lead the
operator to make errors, and the consequences can be disastrous.
A valve interlock is a dual-key assembly which locks the valve in
two positions - open and closed - with one key trapped within the lock assembly
and one key free.
PETROMECH ENGINEERS
PRIVATE LTD (PEPL) is a market leader in providing services to the Oil &Gas
sector, Process Industry. PEPL has
over a decade experience in supplying special alloy steel piping materials to
various Indian industries. In its experience in the Process Industry and seeing
the growing awareness and demand for safety products PEPL identified the need for Interlocking Systems for the Process
Industry and hence the inception of new division PETROSAFE SAFETY SYSTEMS (PSS)
to design and manufacture Interlocking Systems.
A PETROSAFE SAFETY SYSTEMS (PSS) Interlock
guides the operator through a predefined sequence with unique keys for each
step. In the event when a mistake is made only then the operator will not be
allowed to proceed. Either key will not fit or the valve will be in locked
position. Trapped Linear Key Interlocks are simple, mechanical devices, which
can be customized to implement a safe sequence of operation in any process
activity.
PETROSAFE SAFETY SYSTEMS (PSS) has developed process Interlocking Solutions
for various applications such as Valve System, PSV, Pig Launching and
Receiving, Critical work area locking Systems.
PSS interlocks are of different types like QTL, MTL. The Interlocks are easy to operate and clearly show the condition
of the valve and can be fitted to every type and size of valve in service
without interfering into the operation of the plant.
These are simple and reliable
solutions for all types of industrial applications where process systems need
systematic operation of valves in predetermined sequences.
The Interlocks are manufactured from Stainless Steel (SS 316) and hence are maintenance free, tamper-proof, robust, reliable.
