San José prepara simulacro de evacuación
| Lunes 4 de Septiembre, 2017
“Mi ciudad se prepara” es la consigna del próximo simulacro controlado de evacuación que se llevará a cabo el 12 de setiembre, a las 10 de la mañana, en el Casco Central de San José, incluyendo los distritos Carmen, Merced, Hospital, Catedral y Mata Redonda.
El objetivo principal de esta actividad preventiva es evaluar la respuesta de las organizaciones participantes, centros de trabajo y el Comité Municipal de Emergencia ante un sismo de gran intensidad que afecte la ciudad de San José.
El simulacro tomará en cuenta 43 centros de trabajo, 132 edificios, 220 evaluadores privados y un aproximado de 25 mil funcionarios y 35 mil usuarios o clientes, en organizaciones públicas y privadas.
Para lograrlo se está realizando una campaña de información a la población, instituciones participantes, medios de comunicación y otros actores involucrados, garantizando así la seguridad de las personas y la efectividad del proceso.
El escenario planteado por los organizadores tiene como principio un terremoto de magnitud 6,5 Mw generado a una profundidad de 7 a 10 km con epicentro en el sector de Alajuelita, por acción de la falla de Higuito-Bello Horizonte, en la corteza de la placa Caribe, que afectaría Alajuelita, San José Escazú, Aserrí, Desamparados y Santa Ana.
Un simulacro similar se realizó en el 2015, sin embargo en esta ocasión se cuenta con mayor cantidad de instituciones participantes, propiciando así que la ciudadanía reconozca la importancia del ensayo.
Más información en: www.facebook.com/SimulacroSJO
turbine balancing
Turbine Balancing: Understanding and Implementing Dynamic Shaft Balancing
Turbine balancing is a critical process in ensuring the efficient operation and longevity of rotating machinery. This technique focuses on eliminating vibrations and unbalanced forces that occur during the operation of turbines and other similar equipment. Achieving proper balance is essential for enhancing performance, reducing wear, and prolonging the lifespan of components.
The Basics of Turbine Balancing
To understand turbine balancing, it is important to distinguish between static and dynamic balance. Static balance occurs when the center of gravity of a rotor is off-center, causing it to favor a particular position due to gravitational force. In contrast, dynamic balance involves two planes where unbalanced masses create centrifugal forces during rotation, leading to vibrations. Correcting these imbalances dynamically is crucial in turbine operations.
Dynamic Shaft Balancing Instruction
The process of dynamic balancing involves several steps, typically using specialized equipment like the Balanset-1A, a portable balancer and vibration analyzer. This device is equipped to handle two-channel dynamic balancing in various applications, including turbines, fans, and augers. The following are key steps involved in dynamic shaft balancing:
Initial Vibration Measurement
The balancing process begins by measuring the initial vibrations of the rotor. Sensors are installed on the rotor, and the equipment records baseline data as the rotor is set in motion. This measurement serves as the foundation for further adjustments.
Calibration Weight Installation
After establishing the initial measurements, a calibration weight is attached to the rotor. This step is essential for observing how changes in weight affect vibration levels. The rotor is once again started, and the response is documented, providing critical data for analysis.
Adjustment and Re-Measurement
Next, the calibration weight is repositioned, and vibrations are measured again. This helps determine the optimal placement of weights necessary to achieve balance in the rotor. By comparing vibration levels before and after the weight adjustment, operators gain insights into the effectiveness of their balancing efforts.
Final Weight Installation
Using the data gathered from previous steps, operators conclude the balancing process by determining the exact corrective weights needed. These weights are carefully installed at specified locations on the rotor to counteract imbalances. After installation, the rotor is tested once more to ensure a significant reduction in vibrations has been achieved, confirming the success of the balancing action.
Precision in Turbine Balancing
Precision is paramount in turbine balancing. The angle at which weights are installed is crucial. Operators measure angles related to rotor rotation to determine where corrective weights should be placed. This precision ensures that the forces created by the added weights effectively offset the unbalanced masses in both planes of the rotor.
Tools for Effective Turbine Balancing
Utilizing the right tools is essential for effective turbine balancing. The Balanset-1A serves as a versatile device, allowing users to dynamically balance various types of rotors. Since turbines are complex machinery, having a reliable balancer that can accurately analyze vibrations and suggest corrective measures is indispensable.
Applications of Turbine Balancing
Turbine balancing is utilized across multiple industries where rotating equipment plays a vital role. This includes power generation, manufacturing, and other sectors where turbines are integrated into machinery. By ensuring optimal balancing, companies can avoid costly downtimes, enhance operational efficiency, and maintain the overall reliability of their equipment.
The Importance of Regular Turbine Balancing
Regular turbine balancing not only improves machine performance but also contributes to safety. Unbalanced turbines can lead to premature failure, increased energy consumption, and unsafe operating conditions. By incorporating routine checks and maintenance of balancing, businesses can mitigate risks and ensure a smooth operational flow.
Conclusion
Turbine balancing is an essential process that underpins the functionality and reliability of rotating machinery. Understanding the differences between static and dynamic balancing empowers engineers and technicians to implement effective solutions using tools like the Balanset-1A. The systematic approach to measuring vibrations, adjusting weights, and ensuring precision can lead to significant improvements in performance and longevity of turbines across various applications. Maintaining a focus on regular turbine balancing not only sustains operational efficiency but also safeguards investments and enhances overall workplace safety.
Article taken from https://vibromera.eu/