DBB-SAVER Working Principle
The working principle of the DBB-SAVER makes leakage to the safe working area physically impossible. It works on a classical Double Block & Bleed configuration but also can be deployed on most Single Valve Isolations.
The bleed volume can either be the section between:
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both block valves in a classical DB&B configuration, or
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both seats in the body of a single valve, e.g. most ball, plug or gate valves, or
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any other combination of two valves in series, e.g. a block valve and (under conditions) a control valve without traditional isolation credits. Or for example a combination of a stopple and mud plugs during pipeline repair.
We are not greasing or sealing and do not affect the condition or the performance of the valve whatsoever. It is a temporary solution only for the duration of the downstream maintenance works when the valves are locked closed.
Specifications
Areas of application
Gasses | Liquified Gasses | Liquids | On- & Offshore
Capabilites
Fully automated design | Fail safe functionality | Local visual and audible alarm | Remote wireless online alarm functionality
Capacity
A. Standard Tool Capacity: Regular capacity - 1.8L/min | Mid capacity - 2.5 L/min | High capacity - 6.8 L/min
B. Capacity rated to customers request
Design Approvals
PED (Pressure Equipment Directive) or B16.3 and ASME VIII Div.1
Rated for 10 barg / Class #150
Certifications / Licences
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ATEX certified: EX II 2G Ex h IIB+H1 T4 Gb (For ATEX Zone 1 environment)
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Explosion safe, North American Hazloc NEC 500/505, Class 1, Div. 1 and Class 1 Zone 1
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International IECEx compliance
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CE certified
Pressure Class
No limitation
Temperature Range
No limitation
Pipe Diameter
No limitation
Bleed Connection
Multiple bleed points
Alarm
Audible and visual, available locally and remotely (remote monitoring - wireless control from the control room)
Pros
Maximum safety for workers and asset - Reduction of the remaining risk to "ALARP" condition
Maximizing plant availability - The remaining installation stays in operation, no further depressurization of up- and downstream installation parts
No greasing - no risk on sudden gas blow-through
No sealant necessary - the valve stays fit for purpose afterwards
No dependency on last line of defense PPE
Significant cost reduction - execution of maintenance according to plan, without delays; prevention of expensive valve repairs; automatic proving (no personnel involved).
Cons
Heavy leaking valves might be left unrepaired