Context
During shutdowns, incidents, or commissioning phases, lubrication systems are exposed to contamination risks such as water ingress, debris, or process-related residues.
These conditions can affect system integrity before normal operation has even started or fully stabilised.
Constraint
In disrupted or non-standard conditions:
- contamination levels are not always fully known or measurable
- even when clean, filtered (“polished) oil is used, the system itself may still contain contaminants or particles
- filtration and flushing capacity may be limited, while filtering new oil requires time and resources
- time available for full system recovery is constrained
At the same time, decisions must be made to continue with commissioning or restart activities.
Risk
This creates a competing risk scenario:
- Continuing operation without intervention → risk of accelerated wear or failure
- Performing full or partial intervention → defining a technically acceptable solution that fits within schedule and available resources
In many cases, both overreaction and underreaction carry consequences.
Decision Point
A decision must be made between:
- Proceeding with the existing system condition → maintaining progress, but accepting contamination risk
- Performing full or partial intervention → defining a technically acceptable solution that fits within schedule and available resources
Decision Logic
The decision is not about eliminating all contamination, but about defining an acceptable system condition.This requires a maintenance strategy that defines acceptable operational boundaries under non-standard conditions.
Key considerations include:
- Type and severity of contamination
- Sensitivity of critical components
- System design and filtration capability
- Ability to monitor and control during operation
The decision is therefore based on balancing contamination risk against operational impact.
Outcome
- System restart or commissioning maintained within acceptable risk levels
- Unnecessary downtime or over-intervention avoided
- Focus placed on critical areas rather than full system treatment
What this shows:
Contamination control is often treated as a procedural activity, with predefined responses such as full flushing or replacement.
In reality, under disrupted conditions:
- contamination is not always fully quantifiable
- standard procedures may not fit the situation
- decisions must be made based on incomplete system understanding
The critical shift is this:
Contamination management becomes a decision under uncertainty, not a fixed process
Relevance
This situation occurs in:
- commissioning and restart phases
- post-incident or shutdown recovery
- systems exposed to water, debris, or process contamination
- environments with limited cleaning or filtration capability.
The difference is not in knowing how to clean a system, but in deciding what level of intervention is required to safely proceed.
The broader framework behind this approach is outlined in How we work.
If these types of decisions are part of your operations, contact us to discuss how to structure them in a more defensible and reliable way.