2025 Valero Report on Guiding Principles - Flipbook - Page 26
Valero remains an industry top-quartile
performer in overall maintenance costs and
turnaround management. In 2024, Valero
reached its lowest-ever percentage of unit
downtime associated with turnarounds.
Process Safety and Reliability
Our process safety and reliability
programs proactively contribute to
our goal of operational excellence.
These programs provide safeguards for certifying
our equipment is correctly designed, regularly
maintained and safely operated. Valero employs
an industry-leading technical process safety and
reliability assessment program to drive 昀椀rst-quartile
reliability performance and help maintain the safety
of our employees and communities. We continue to
evaluate and utilize state-of-the-art process control
and equipment monitoring technology to optimize
operations ef昀椀ciency.
impactful areas. Below is a list of some of the most mature
technical assessments and focus areas:
• MAIN – Inspection and mechanical integrity
• ESARN – Electrical systems
• ROTO – Rotating equipment
• PACE – Process automation and controls effectiveness
• CYBER – Cybersecurity
• AOE – Alkylation operations excellence
• ORA – Operational reliability
Through CTEMS, we have mature processes in place
to analyze process safety events (PSE). Understanding
the reasons for a PSE is the 昀椀rst step. We then take
necessary actions to prevent repeat failures, address
unreliable equipment or improve speci昀椀c program
expectations to ensure safe and reliable operations.
Valero began developing a suite of technical
assessments over 10 years ago to inform the annual
strategic resource planning process and ensure
continuous improvements are made in the most
These assessments leverage the expertise of our
technical subject matter experts who work alongside site
champions to evaluate the design and effectiveness of
each site’s speci昀椀c reliability programs. The results identify
areas of opportunity, which are prioritized to help each
site achieve our overall operational excellence goals. Our
ORA, MAIN and ROTO assessments were updated in 2024
to account for progress driven through our CTEMS annual
focus areas and site-speci昀椀c improvement plans. These
updated assessments will allow priorities and resources to
shift to remaining opportunities and new emerging issues.
Mechanical Availability
Our high mechanical availability rate is a result of our highly reliable re昀椀nery
operations and is underpinned by our CTEMS expectations of:
In 2024, we achieved
97.1% re昀椀ning mechanical
availability, re昀氀ecting
Valero's reliable
operations and strong
record.
• Avoiding unplanned downtime
• Implementing our structured turnaround planning process
• Minimizing environmental impacts
• Ensuring ef昀椀cient use of resources
In addition to our capital investments in reliability, our comprehensive reliability
assessments, proprietary management systems and internal strategic
planning process help reduce environmental incidents and improve safety.
97.5%
97.1%
97.0%
96.5%
96.0%
95.5%
95.0%
2010
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