Flow control

Overview

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Flow control applications involve managing the direction, routing and isolation of process fluids & gasses through complex piping systems. Whether it is a process changeover between parallel units, a product diversion to an alternative route, or critical isolation for maintenance, correct valve sequencing and control is essential to prevent incorrect flow paths, product contamination and hazardous process conditions.

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The challenge

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Flow control procedures often involve multiple valves across different locations that must be operated in a coordinated sequence.

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Written procedures and operator training alone cannot eliminate the risk of human error particularly during non-routine operations, emergency situations or shift changes.

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The Alcatraz solution

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Alcatraz interlocking solutions enforce correct valve sequences for all flow control applications. By linking valves with coded key transfer interlocks, each step in the sequence must be completed before the next can proceed.

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This mechanical enforcement eliminates the possibility of incorrect flow paths, ensures complete isolation before maintenance and guarantees correct alignment during changeover operations.

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Key benefits

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•   Enforced valve sequencing for changeover and diversion

•   Complete isolation assurance for maintenance activities

•   Prevention of incorrect flow paths and product contamination

•   Integration with existing control systems via PILOT

• Applicable to manual, gear-operated and actuated valves

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Products used

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QL-Range quarter-turn interlocks, ML-Range multi-turn interlocks, Closure Door Locks, MOV Locks, PILOT digital oversight, ARVC remote manual valve actuation & Eco-Drive range, Micro-Lock, key exchange panels and sequence control units.