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Mokveld Valves b.v. offers
engineered valve solutions for control and safety applications
in the oil and gas Industry.
This concerns the Safety Instrumented System (SIS) in
accordance with the IEC 61508, IEC 61511, ISA 84.01 etc.
as a complete safety loop including the voting logic,
initiators (Mokveld mechanical switch) and final element
or only the final element. The final element is the formal
name for the Safety Slam-shut Valve (SSV) or HIPPS valve.
Mokveld specializes in fast acting high reliability shut-off
valves for both upstream, transmission and downstream
applications. The high reliability of the Mokveld pressure
balanced axial flow valve is reflected in third party
reports regarding the failure rate (both safe failures
and dangerous failures) and the Probability of Failure
on Demand (PFD) of our valve / actuator assembly.
Mokveld manufactures a complete assembly of valve / actuator,
and if required pressure switch, which is certified in
accordance with DIN 3381 / EN 14382. In these standards
the SSV is considered one functional unit consisting of
sensor / valve / actuator.
Mokveld is also experienced in providing ‘Engineered
Valve Solutions’ complete with controls for a wide
range of high demanding applications. The control systems
are designed in compliance with customer specifications,
to fulfil the functionality as required for specific applications.
This can be related to response times, failure modes,
instrument air or gas conditioning etc.
In the case of a complete HIPPS-system, our package includes
Initiators (transmitters), Logic Solvers, and Final Elements
(valve/actuators). The Safety Integrity Level (SIL) of
the total system is verified by an independent Third Party.
We refer to our mission
statement for further information.
Research
and Development
Our Research & Development department has a staff
of 10 qualified engineers and is equipped with state of
the art facilities and tools, such as:
- 3-D computer aided design (CAD)
- 3-D finite element stress modelling
(FEA)
- Computational fluid dynamics modelling
(CFX)
Our technology leader position is emphasised with ongoing
research projects to continuously improve our existing
products and develop new innovative products. |
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| Quality
control and quality assurance |
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It is Mokveld policy that all valves are manufactured
within strict quality standards. All valves are subjected
to body and seat tests prior to shipment. Mokveld Quality
Assurance department takes full responsibility to ensure
that all applicable customer contractual requirements
are fulfilled. For this purpose, the Mokveld Quality Assurance
Manual has been developed. The manual outlines all relevant
procedures to ensure a high quality level. The procedures
include all stages of sales, engineering, procurement
and manufacturing. A copy of the Quality Assurance Manual
is available upon request. Mokveld's quality system is
in full compliance with ISO 9001 and API Q1 and has been
audited and approved by all major oil and gas companies,
engineering contractors and inspection authorities. |
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