2024 Schedule

As part of a comprehensive, corporate-wide reliability improvement program, RCM-R analyses were conducted to determine the most appropriate maintenance program to sustain reliable operations for the anaerobic sludge digestion process. The method employed, “Reliability Centered Maintenance – Re-Engineered,” (RCM-R), is an analysis method based on the standard SAE JA-1011 with several enhancements for compliance with ISO 31000 (Risk Management), 14224 (Reliability Data Interchange), and 55001 (Asset Management). In the context of RCM, the assessment involves not only identifying the risks associated with each potential failure but also categorizing the risk levels into four classifications: high, medium, low, and acceptable. This classification, determined through a matrix, is crucial for selecting appropriate solutions to mitigate identified risks. The risk figures indicate which failure modes are more critical and, as such, more likely to have tasks defined. To establish clear system boundaries, inclusions, and exclusions, and to understand the consequences of asset failure in operation and its overall importance to the business, functional block diagrams were developed. Throughout the RCM-R process, the functional block diagram played a pivotal role in examining the operating context and identifying potential failures. Unless otherwise requested, the scope of this RCM-R includes the digester sludge feed system and valve, digester cover safety equipment, digester sludge heating system, primary digester tank, and secondary digester tank.