Phase I — Plan, Scope, Vendor Down-select

• Uprate Feasibility Study
• Scope Development
• Spec Development
• Proposal & Technology Review
• Witness Point Identification
• Contract Review (guarantees, warranties, bonus/penalties)

Phase II — Review Design

• Turbine/Gen Design Review with OEM
• Design Review Questionnaire
• Formal Design Review
• Design Analysis Report Review

Ancillary Engineering Submittal Reviews

• Retained Component Study
• Torsional Analysis
• Thermal Kits/Heat Balance
• Modeling if Required (PEPSE)
• Missile Probability Analysis
• Drawings (clearances, bearing elevation & alignment, longitudinal, rating plate, lifting gear instructions, etc.)
• Instruction/O&M Manual Updates
• Performance Test Procedure & Correction Curve Review
• BOP (MSR, Condenser, FW, etc.)

Procurement

• QA/QC & Manufacturing Witness Points
• Factory Acceptance Tests
• Manufacturing Data Review (including non-conformances)

Phase III — Install, Commission, Performance Verification

• Schedule & Scope Review
• Field Installation OE
• Commissioning OE
• Performance Test Result Verification

Troubleshooting Support

• Lost MW analysis
• Component performance evaluations
• Full cycle and historic performance evaluation

Program Evaluation

• Assess and develop thermal performance monitoring program
• Assess and develop reporting program
• PEPSE model review and assessment

Uprate Support

• Initial planning and feasibility studies
• Third party review and validation of OEM heat balances
• Support PTC-6 testing

Vibration Analysis and Troubleshooting

ENTRUST has extensive experience analyzing, diagnosing and troubleshooting complex lateral vibration issues — including vibration events resulting in severe turbine / generator failures.

New Turbine Supervisory Instrumentation (TSI) Systems

ENTRUST has experience with Bently Nevada / Baker Hughes (System 1, Orbit 60) & Emerson systems, and provides support for all phases of a new system upgrade:

• Planning
• Vendor down-select
• Design reviews
• Field installation
• Setup
• Commissioning

ENTRUST has deep domain expertise when it comes to torsional resonance physics, testing, and analysis of turbine-generator rotors. Our processes for modeling, testing, and monitoring for torsional frequencies and mode shapes are tried and true. ENTRUST provides our clients with the following advantages:

• In-depth knowledge of major OEM steam turbine generators, from both design and overhaul experience
• Our team has extensive “first of a kind” HP, IP, LP and generator retrofit design experience which has included torsional frequency analysis and testing services to ensure acceptable system frequencies.
• Nuclear and fossil turbine retrofits and new designs developed by our team are operating worldwide.
• Over 50 tests and analyses completed as an OEM and Independent 3rd Party Consultant
• Ability to recommend design changes to detune system if resonance issues are identified in the analysis
• Over 20 Torsional papers written starting in 1986

In recognition of our capabilities for evaluating complex nuclear turbine and generator issues, we were selected by NEIL in 2010 to assess risk for all US, Spain and Belgium nuclear (turbine and generator) units including new proposed retrofits and extended power upgrades. These assessments and criteria have been updated by TGA (now ENTRUST) in 2021 with a rollout scheduled for 2022. Assessments of torsional resonance concerns on all 120 nuclear units were completed in 2011. Many of these units are in the process of implementing additional monitoring and hardware modifications. Our assessment of emerging issues on behalf of NEIL has been instrumental in providing the necessary criteria for monitoring systems and upgrades.

System health evaluations, troubleshooting, performance monitoring, and vulnerability reviews — including industry best practices, Retained Component Studies, and Long Term Asset Management (LTAM) plans:

• Main Turbine and Turbine Auxiliary (gland steam, lube oil)
• Main Generator and Generator Auxiliary (seal oil, stator cooling, H2 gas)
• Main Condensers
• Moisture Separators and Reheaters
• Main steam and Extraction steam
• Hydraulic controls system (EHC)
• Feedwater, Heater, vents and drains

Main Turbine Valves (Stop, Control, Throttle, Governor, Bypass, Reheat, Intercept, Cross Around/Over) — Steam Side & Actuator Inspections:

• Assess and develop inspection programs
• Maintenance optimization studies
• Frequency change / deferral evaluations

ENTRUST provides comprehensive engineering solutions for nuclear power facilities, specializing in Instrumentation, Control Systems, and Electrical design services. Our expertise includes the development and integration of advanced PLC, HMI, and DCS systems to ensure safe, reliable, and efficient plant operations.

We have subject matter experts in different PLC and DCS platforms that include Emerson Ovation, Westinghouse, Rockwell PLCs and HMIs, and other platforms used in the nuclear industry. We support critical subsystems across the Balance of Plant (BOP) — including feedwater systems, cooling towers, turbine controls, and auxiliary equipment — by delivering robust control strategies. Our team provides invaluable experience with our SMEs to help support any owner’s engineer projects. A list of our services is provided below:

• Instrument, Control, and Electrical
• Consulting
• Engineering and Design
• Process Expertise / Training
• Project and Plant Engineering Support