Bypass Management
Bypass management controls temporary disabling or overriding of alarms, trips, interlocks, protective functions, or equipment safeguards.
What this term means in maintenance
Bypass management controls temporary disabling or overriding of alarms, trips, interlocks, protective functions, or equipment safeguards.
Why bypasses are used
A bypass may be required for:
- Testing
- Startup
- Maintenance
- Fault diagnosis
- Temporary process condition
Required controls
A controlled bypass may require:
- Reason
- Risk assessment
- Authorization
- Start time
- Expiry
- Compensating controls
- Visible indication
- Shift handover
- Restoration verification
Practical example
A trip is bypassed briefly during proof testing while the process is placed under approved alternative protection.
Maintenance record
The bypass should be linked to the relevant asset, work order, permit, and change record.
Common mistake
Leaving a bypass active after work removes a protection layer and may remain hidden until an incident occurs.
How this term differs
Bypass Management is the control of temporary overrides of protective functions. It is related to Alarm Management, Proof Test, and Interlock, but these terms describe different records, measures, roles, strategies, or decisions and should not be used interchangeably.
Related concepts
Related maintenance terms
Keep exploring connected CMMS, reliability, and maintenance planning terms.
Management of Change
Management of Change is the controlled process used to assess, approve, implement, document, and review changes that could affect safety, quality, environment, reliability, or compliance.
Interlock
An interlock is a control condition that prevents or changes equipment operation unless defined safety, process, or sequence requirements are satisfied.
Proof Test
A proof test is a planned test used to reveal hidden dangerous failures and confirm that a protective or safety function can perform as required.
Glossary FAQs
- What is bypass management?
Control of temporary overrides of trips, alarms, interlocks, and protective functions.
- What should a bypass record include?
Reason, risk, approval, start, expiry, compensating controls, indication, and restoration.
- Why are bypasses dangerous?
They remove a protection layer and may remain hidden if not restored.