Mechanical Engineer Engineering

Hamed Monsef

+1-916-***-**** • *****.*******@*****.***

www.linkedin.com/in/hamed-Monsef

Objective

I started working at a 4-megawatt CHP (Combined Heat and Power) power plant as a mechanical engineer. At the beginning of my career, I worked for six months as an operator, and then continued as a service engineer and technician. Over the course of about 4 years, I pursued further education in the same field and simultaneously graduated with a degree in Mechanical Engineering with a focus on manufacturing. During my work, I became familiar with various projects and traveled to different cities with the engineering team, dealing with power plants and engines from different brands and solving their problems. As a supervisor, I was able to achieve success in all projects.

Education

Bachelor of Science in Mechanical Engineering

Payam Noor University of Iran, Oct. 2016 - June 2020

(credence and evaluated by ACREV Inc in United state) Thesis: Stress and Fatigue in Casting under Pressure Grade: 3.5

Job Experience

Telecom Field Technician AWP (Foreman Pos) Telecommunications, Ericsson Inc. Sacramento, CA September. 2022 to October. 2023

Directed and supervised field operations, leading a team of technicians in the installation, maintenance, and troubleshooting of telecommunication infrastructure. Leadership by coordinating work schedules, providing technical guidance, and ensuring adherence to safety protocols. Successfully managed and executed projects involving 5G, 4G (700/850 LTE) technology, L-sub6 antennas, and radios, meeting project deadlines and quality standards. Conducted training sessions for team members, enhancing their skills and knowledge in telecom technology. Collaborated with cross- functional teams to streamline communication and project workflows, contributing to overall efficiency.

Telecom Field Technician (Top Hand I Pos) Telecommunications, CIK Power & Distributors Co. Sacramento, CA April. 2021 to August. 2022 Swiftly transitioned into the telecommunications industry, starting as a technician and advancing to the prestigious Top Hand position. Demonstrated exceptional learning agility by rapidly acquiring comprehensive knowledge of various telecommunication technologies and techniques. Excelled in mastering advanced skills related to 5G, 4G

(700/850 LTE) technology, L-sub6 antennas, and radios, showcasing adaptability and a strong commitment to professional development. Consistently delivered outstanding results in complex projects, contributing significantly to the success and efficiency of the team.

Service Engineering and operating, Assistant/Associated Service & Installment. MKN power INC, Movaledkaran Nirou Pars Power Plant Co. Tehran, Isfahan, Iran June. 2016 to February. 2020

I began my work with engines fueled by compressed natural gas (CNG), including various types such as the MTU with a power of 2 megawatts, series 20 V 4000, type L63, where the type may vary depending on environmental conditions. Additionally, I worked with MWM engines with a power of 1.6 megawatts, model TCG 2016, where

"20" indicates the cylinder volume and "16" represents the number of cylinders. I also worked with other types such as Mitsubishi with a power of 5 megawatts, and so on. Due to my strong interest in this field, I strived for further learning and advancement in engineering and component design. I gained experience with software such as SolidWorks and AutoCAD, as well as Matlab software to some extent. I used these tools for designing washers and occasionally manufacturing oil and air filters. These types of machines have their own startup cycles, for instance, German machines like MTU and MWM establish connection to the main power grid in a parallel or synchronous manner. This connection occurs after starting the engine and bringing it to optimal condition, and after checking all parameters. The generator is synchronized with the grid at low power and with a voltage of 400 kilovolts, either in parallel or synchronous mode. Then, through a transformer, the voltage is converted from 400 kilovolts to 20 kilovolts, and it is connected to the main grid at a location called a switchgear or power plant substation.

CHP Engineering Projects:

Here's an overview of the types of materials and tools that I used in working with gas engines for power generation:

These types of machines have their own startup cycles, for instance, German machines like MTU and MWM establish connection to the main power grid in a parallel or synchronous manner. This connection occurs after starting the engine and bringing it to optimal condition, and after checking all parameters. The generator is synchronized with the grid at low power and with a voltage of 400 kilovolts, either in parallel or synchronous mode. Then, through a transformer, the voltage is converted from 400 kilovolts to 20 kilovolts, and it is connected to the main grid at a location called a switchgear or power plant substation.

Maintenance and Repair:

Leakage Inspection:

These types of engines often need to be checked and inspected every two hours due to the high temperature of the cylinders and the environment, to prevent any problems from occurring. Pre-designed and prepared checklists are used for this purpose, to register all parameters of the machine's condition every two hours (sometimes every hour depending on environmental conditions and the machine). Parameters such as cylinder temperature, oil, water, fuel, sensors, pumps, and actuators are recorded, and at the end of each month, by comparing them with each other, we identify changes and problems that have occurred over time and address them. Any change or problem, no matter how small, can cause significant damage and lead to the machine's shutdown and failure due to the sensitivity of the machines. These machines operate continuously, around the clock, and in three shifts, always producing electricity. For example, in one instance, by checking the checklists at the end of the month, we noticed that the consumption of gas (actuator valve) had increased day by day. Upon further investigation, we discovered a gas leak at its distribution location and addressed the issue. Without these checklists, this change would not have been apparent.

In other cases, we noticed a decrease in oil or water pressure, which led us to identify faults in the oil or water pump, or clogging in the oil filter, which needed to be rectified promptly. Sometimes, we noticed engine imbalance or vibration, indicating a malfunction in one or more cylinders. We would then check the cylinders with the technician and engineering team and rectify the issue. Others:

In the event of a significant technical fault, the machine automatically trips and shuts down. By checking the type (code) of the trip or alarm through the monitor, we refer to the guidebooks that are purchased with each engine from the factory to identify and rectify the problem. For example, in cases where a drop in cylinder temperature occurs, we first check the spark plug and spark plug wire of that cylinder, and if the issue persists, we perform a compression test to address any problems in the piston ring area. Alternatively, we use a specialized device such as an endoscope to inspect the inside of the cylinder chamber.

Professional service and activities:

Compression Test:

First, we shut off the main gas flow to cut off fuel supply. Then, we turn on the engine oil pump to ensure complete lubrication of the engine. We attach a compression gauge instead of the spark plug in the cylinder head and manually start the engine for five seconds while simultaneously measuring the pressure gauge reading. (Typically, in dual engines, the pressure should be between 12 to 17 bars.) If it's lower, the cylinder chamber, rings, and piston are inspected. These types of engines have periodic service guidelines, such as engine oil replacement, oil and air filter replacement, battery checks (checking power cable connections), and valve clearance adjustment. Valve clearance adjustment involves checking the gap between the rocker arm and valve stem, which is measured using a tool called a feeler gauge. This tool is designed very precisely, with each blade of this metal gauge having a very specific surface and thickness. Various types of feeler gauges are used, such as straight feeler gauge, tapered feeler gauge, go/no-go feeler gauge, and offset feeler gauge, depending on the engine type. The size of the feeler in exhaust and intake valves differs. For example, the feeler size for exhaust valve is 0.30 mm or 30, and for intake valve is 0.70 mm or 70. Engine Start up:

During engine start-up, it should be warm, typically between 50 to 60 degrees Celsius. We turn on the water pump and warm the water inside the engine using a heater located along the water path, which heats up the engine and oil as well. This step is necessary because if the engine is not warm, it can create stress on the bearings and pistons.

Priming or initial oiling has two advantages: firstly, it warms up the oil in such a way that both the oil and water reach a certain temperature due to the circulation of water and oil in a component called the oil cooler, and secondly, it primes the bearings, cylinder heads, rings, and turbochargers from the start-up oiling.

After completing these steps, we move on to the engine start or cranking stage, which is done by a 24- volt starter in two types: electric mechanical or pneumatic. After cranking, we gradually increase the engine speed until it reaches 1500 revolutions per minute (RPM). At this stage, all parameters such as HT and LT water pressure, cylinder temperatures, fuel consumption, and oil pressure are checked.

The water entering the oil cooler is called HT water, which cools the engine block, cylinder heads, and oil, while the water entering the air cooler is called LT water, which cools the fuel. Once the engine reaches the desired speed, we give the synchronizing command, which means connecting the engine to the generator. At this moment, the device checks and compares the network voltage, frequency, and rotation phase with the generator's voltage, frequency, and rotation. If the difference between these parameters is less than 5 degrees, the synchronizer gives the synchronization command to the circuit breaker and allows us to increase the power. During this time, all parameters must be checked sequentially.

The cylinder temperature at maximum power should have a tolerance between 380 degrees Celsius to 440 degrees Celsius in engines like MWM, and between 450 degrees Celsius to 530 degrees Celsius in engines like MTU. Otherwise, the required action for the specific cylinder must be taken. CCHP Projects:

In some projects, we utilized the heat from jacket water and exhaust gases as a heating system for heating residential complexes, dormitories, or greenhouses, as well as for engine houses and saunas. Heat transfer from the engine and exhaust was a process that, along with the engineering team and technicians, was investigated and implemented in some projects. In such systems, simultaneous heat and power generation occurs, known as CCHP (Cool Combine Heat and Power).

For example, in absorption chillers, by introducing hot water at 134 degrees Fahrenheit and creating heating inside the refrigerant gas exchanger, cooling is produced. Gas cooling systems also use this process for cooling.

Alongside the technical engineering team, I have worked and gained four years of experience in teamwork. I have been able to perform my duties well and learn the entire process thoroughly from start to finish.

Skills

+ Anritsu Certified (PIM and Sweep) ● PIM and SWEEP test of 4G/5G A&L per Verizon Greenbook standards ● Trouble shoot VSWR and RSSI alarms for clean post-checks, after conversions ● CDMA PIM and SWEEP

+ Plant Operations: Proficiency in operating and monitoring power plant equipment and systems

+ Maintenance and Repair: Experience with preventive and corrective maintenance procedures for power plant equipment

+ Analytical and Problem-Solving Skills: Proficiency in analyzing data, identifying trends, and developing solutions to optimize power plant performance, address operational challenges, and improve reliability

+ Continuous Learning and Adaptability: Commitment to staying updated on industry trends, emerging technologies, and best practices in power generation, as well as the ability to adapt to changing conditions and requirements in the power generation sector.

+ Technical Knowledge, Communication and Collaboration Computer Skills

Advanced skills in Engineering and Testing software, including Auto CAD, Google Earth Professional, Solid Works, Python ● Engineering design ● Engineering Drawings and Tolerance

● Advance skills in Microsoft Office Suite.

+SolidWorks/AUTOCAD

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