Communities in PRCR
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- Colecciones de la Albizu University
- Colecciones digitales de Atenas College
- Colecciones de los Centros Sor Isolina Ferré
- Materiales utilizados para la certificación.
Recent Submissions
Potable Water Tank Management and Risk Mitigation for a Federal Healthcare Facility
(Polytechnic University of Puerto Rico, 2026) Irizarry Vega, Julio Angel; Cruzado Vélez, Héctor J.
A federal healthcare facility depends on a reliable potable water system to support patient care, sanitation, and daily operations. This project developed a structured engineering management approach for inspecting, monitoring, and maintaining a potable water tank. The methodology integrated laboratory testing, structural inspection, risk evaluation, maintenance verification, and operational planning to improve regulatory compliance and system reliability. Results demonstrated that organized inspection workflows and preventive maintenance activities can reduce operational risks and improve long-term maintenance planning. Key Terms ⎯ Engineering Management, Potable Water Tank, Risk Mitigation, Water Quality Monitoring
Proactive Obsolescence Management for Critical Control Components in STATCOM Systems
(Polytechnic University of Puerto Rico, 2026) Quiñones Kientz, Juan S.; Cruzado Vélez, Héctor J.
Obsolescence of critical control components has become a significant challenge in STATCOM manufacturing, where prolonged lead times and unavailability of spare parts increase the risk of unplanned downtime and elevated emergency costs. This project focused on the embedded control computer (CC-002) and high-frequency switching gate card (GC-002), which exhibited risk scores. The objective was to develop a proactive obsolescence management policy using the PDCA cycle. A risk prioritization matrix was constructed from ERP and CMMS data using lead time, failure rate, and downtime impact, followed by a formal multi-criteria decision analysis incorporating emergency procurement cost, cost-benefit calculations, and lifecycle costing. The analysis identified aftermarket equivalents as the preferred short-term mitigation strategy and produced a comprehensive policy that includes early warning indicators, a structured decision framework, and measurable KPIs. The resulting policy and supporting tools provide a framework that addresses supply chain vulnerability and is expected to enhance operational resilience and cost efficiency in STATCOM production. Keywords cost-benefit analysis, decision tree, risk prioritization matrix, supply chain resilience.
Optimización del proceso de manejo de materiales desde la solicitud hasta la entrega en proyectos de construcción
(Polytechnic University of Puerto Rico, 2026) Cabreja de la Cruz, Juan F.; Cruzado Vélez, Héctor J.
La gestión ineficiente de materiales en programas de construcción dispersos genera atrasos, errores y sobrecostos que comprometen el cronograma del proyecto. Este estudio aplicó la metodología DMAIC para optimizar el proceso de solicitud y entrega de materiales del Programa de Reconstrucción del PRDOH, el cual opera con 80 casos activos en 15 municipios. El análisis inicial identificó que el 71% de las solicitudes se procesaban mediante canales informales, con un tiempo promedio de 4.3 días en casos con atraso y un 46% de casos superando el criterio de tres días. A partir del criterio base de cinco días, se estableció como meta una reducción mínima del 30%, con criterio de éxito de tres días o menos. Se estandarizó el flujo mediante un formulario digital y se implementó Smartsheet como plataforma centralizada. En los 43 casos procesados bajo el nuevo flujo, el tiempo promedio se redujo a 1.8 días, una reducción del 58%, con un 97% de cumplimiento.
Improvement of Aging and Closure Performance of Nonconformance Reports in the Distribution Pole Program Through Target-Based Queue Management
(Polytechnic University of Puerto Rico, 2026) Miranda Alvarado, Jorge G.; Cruzado Vélez, Héctor J.
This project examined the post-construction Nonconformance Report process in the Distribution Pole program to improve aging and closure performance through the target-based queue management framework. The work used workflow review, data preparation, baseline definition, framework design, and dashboard-based monitoring to support escalation controls and operational follow-up. Results were evaluated by comparing the active NCR population on April 14, 2026, and May 11, 2026. Open reports changed only slightly, from 350 to 348, but median aging decreased from 125 to 51 days, representing a 59.2% reduction. The oldest backlog categories improved, while justified coverage of active NCRs above 90 days increased from 49.75% to 100.00%. Although the original overdue measure based on more than 30 days worsened, the revised 45-day escalation thresholds showed improvement. Overall, the project exceeded its minimum objective of reducing median aging by at least 8%.
Optimization of Water Consumption in HV100 Extraction and Hydration Process
(Polytechnic University of Puerto Rico, 2026) Aponte Amezquita, Jeannerie; Cruzado Vélez, Héctor J.
Water consumption in high-volume manufacturing environments represents a significant operational and sustainability challenge, particularly in rinse-intensive processes requiring continuous deionized (DI) water flow. Within the High Volume 100 (HV100) business unit, the Extraction and Hydration (E&H) process was identified as a major contributor to overall plant water consumption. This study evaluated a process optimization strategy to reduce DI water flow from 10 L/min to 5 L/min using a Lean Six Sigma DMAIC methodology. Engineering Study (ES), Operational Qualification (OQ), and Performance Qualification (PQ) activities were executed under worst-case and normal manufacturing conditions to verify that the proposed reduction maintained acceptable process performance and product quality. Results demonstrated that evaluated parameters remained within established acceptance criteria, while the proposed optimization is expected to reduce annual DI water consumption by approximately 50%, from nearly 34 million gallons to approximately 17 million gallons annually.