8/10/2019 Capability Statement WGIM Integrity Operating Windows

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Integrity Operating Windows (IOWs) for Plant andTopside FacilitiesWood Group Integrity Management (WGIM) has the experience and in-depth technical

knowledge to develop Plant and Topside Facilities comprehensive corrosion management

programs.

Processes are not always stable either through upsets or feedstock variations. These

excursions are typically not considered and their impact not examined in standalone RBI

assessment. WGIM proposes IOW development to ensure your asset integrity

management plan is effective. We believe that process surveillance within the right IOWs is

a vital component to complement RBI assessment and inspection planning.

The American Petroleum Institute (API) has issued anew recommended practice API RP 584 that discussthe need to establish operating limits that address thecontrols necessary for process variables that mightaffect the integrity or reliability of the process unit.

WGIM recently developed integrity operating windowsfor several WA Oil & Gas companies. The potentialdamage mechanisms for every vessel and corrosioncircuits were evaluated, during the RBI assessment.For each applicable damage mechanism, limits wereestablished on critical process parameters to keep theprocess into boundaries to ensure integrity of pressureequipment. In many cases, the limits were chemical,related to the composition of the process streambecause of its impact on corrosion. In other cases, thelimits were physical both because of corrosion impact

and effect on mechanical properties.

What are IOWs?

The RBI assessment determines frequency and scopeof inspection by identification of susceptible damage

mechanisms on pressure equipment. It assumes theapplication of reliable monitoring of critical processparameters to minimize damage to equipment that maybe associated with process and design excursions.

IOWs are those preset limits on process parametersthat need to be established and implemented in orderto prevent from potential material degradation.

Operation within the recommended limits should resultin predictable and reasonably low rates of degradationor prevent damage initiation and propagation.Conversely, operation outside the IOW limits couldresult in unanticipated damage or accelerated damage.

Potential breach of containment could result from oneor more damage mechanisms covered in API RP 571including general or localized corrosion, mechanical or

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8/10/2019 Capability Statement WGIM Integrity Operating Windows

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8/10/2019 Capability Statement WGIM Integrity Operating Windows

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