SEPCO Phase IV FW Pumps
K&M understands that from the beginning of the commercial operation, Phase IV Add-on Combined Cycle feedwater pumps experienced high vibration issues and that these issues are not fully resolved despite remedial measures undertaken by SEPCO3, the EPC Contractor, and SEPCO. Specifically, one of the pumps, pump C, still experiences high vibration.
On March 8, 2024, SEPCO issued a request for K&M to provide a quote for performing additional analysis of the feedwater pump operating issues and to provide recommendations on a path forward.
In response, K&M has outlined a three-task approach:
Task 1: Assess Vibration Characteristics and Analyze Vibration Data for Phase IV BFWP Motors
K&M will analyze the vibration characteristics and vibration data for the Phase IV BFWP motors that SEPCO has seen during the commissioning and operation of the plant. The analysis will consist of a review of all relevant documentation and operating data for the BWFP motor and pump assembly as compared to applicable international standards for rotating equipment operation and OEM standards. The data required for a thorough analysis of the issue can be seen in Section 5.3.
Task 2: Provide Recommendations to Resolve Underlying Issues and Mitigate Vibration-Related Levels and Concerns
Based on the information received and analysis performed for Task 1, K&M will provide recommendations for any remedial action or analysis to be performed that has not previously been implemented by SEPCO. The action may consist of running specific test scenarios for additional data points or may require physical intervention.
Task 3: Offer Guidance on Necessary or Recommended Mechanical Measures to Live with the Current Situation of the vibration issue on Phase IV BFWP Motors.
If it is determined that the vibration issues cannot be resolved, a secondary option would be to optimize how SEPCO operates the plant with Pump A having excessive vibration for the life of the plant. K&M will provide recommendations for plant operation configurations, such as, for example, having Pump A on standby or limiting its operation to certain maximum number of running hours per year to prolong the life of the bearings and rotor of its motor; scheduling pump maintenance at the time of gas turbine outage to minimize pump impact on the overall unit availability, conducting regular inspections of pump A motor bearings and preventive bearing replacement to minimize the possibility of pump forced outage due to bearing damage, etc.
Deliverable:
Feedwater Pump Vibration Analysis and Operation Recommendation Report
Fogging System Analysis
SEPCO has indicated the power grid in Jordan has had difficulty covering peak loads observed during high-temperature periods. As a result, SEPCO has reviewed potential solutions for its Samra Power Plant to increase power plant generation during these peak periods.
SEPCO intent is to modify all seven gas turbines installed at the Samra Power Plant by installing a fogging system in the gas turbine inlet. This modification aims to increase plant power generation to help the power grid cover the peak loads during high-temperature periods. To evaluate the technical and commercial viability of the fogging system installation, SEPCO engaged K&M Advisors to review the design of generating units’ and auxiliary equipment and systems to evaluate their ability to support the increased power output during fogging system operation.
The purpose of this study is to:
- Verify whether existing auxiliary equipment of each of the phases is capable of supporting facility operation with the fogging systems, and
- Determine the demineralized water demand required for the fogging system.
Fogging System RFP Development
Once the technical viability of implementing the fogging system has been confirmed, SEPCO will need to develop an RFP for suppliers to submit their proposal for design that meets the requirements of applicable standards and good engineering practice. K&M will develop the RFP documentation for suppliers to ensure that the design of the system is adequate and technically sound.
Fogging System Analysis
K&M developed GateCycle models of combined cycle plants to calculate heat and material balances for different ambient temperatures without and with the fogging system. For each combination of the ambient temperature and fogging system status, K&M developed a spreadsheet summarizing the system power output and power output increase, heat rate and heat rate change, fogging system evaporation rate/demineralized water requirements, and other steam and water impacting operation of HRSG, steam turbine, ACC, and other auxiliary equipment that could be impacted by the fogging system. To analyze the demineralized system requirements, K&M calculated the fogging system demineralized water requirements and the total daily demineralized water demand and compared it with the demineralized water system capacity. We evaluated whether there is a deficit of demineralized water with fogging system operation and suggested the required additional demineralized water system capacity.
Fogging System RFP Development
K&M will assist SEPCO in developing the fogging system RFP. The RFP document prepared by K&M will include instructions to bidders, functional technical specification including the scope of supply and services and general technical requirements, and forms to be submitted by bidders. It is expected that the draft supply contract will be prepared to be included in the RFP will be based on the standard SEPCO’s supply contract, so no draft contract preparation is included in K&M’s scope. SEPCO will provide K&M with any available technical and commercial information received to date from the prospective fogging system suppliers.
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