LATEST ISSUE OF COMBINED CYCLE JOURNAL

FEATURES

TVGS smBEST PRACTICES REVISITED: TVGS nurtures deep community roots

Tenaska Virginia Generating Station’s prominent and ongoing participation in the CCJ Best Practices Awards program over the last 10 years is as much about technical and equipment improvements as it is about employee and community relations. But it is with the latter that the facility has imprinted an indelible mark of leadership for the electric-power industry.

V GAS TURBINES

New third-party repair techniques, hot parts for V84.2 and V84.3A gas turbines.

HIGH-PRESSURE VALVES: Valves smWhy you should only buy premium valves

Detailed case history on the replacement of main steam valves for F-class heat-recovery steam generators illustrates the extensive, and expensive, effort required to replace large boiler valves. Likely, it will make you think twice about purchasing valves of any size for new HRSGs, or replacement valves for existing units, based on cost rather than on quality.

CONTROL SYSTEM UPGRADE

Cogen plant’s unique approach links legacy control systems.

Insulation smINSULATION SYSTEMS: Replacing GT insulation promotes safety, speeds maintenance

Insulation can wear out faster than you think, particularly that installed on gas turbines with issues dictating frequent removal of their upper casings. If your unit was purchased during the bubble of 1999 to 2004 and still has the original turbine insulation, consider conducting a thermal survey to evaluate its effectiveness.

GENERATOR TESTING

Developing, implementing an effective generator assessment program.

GAS TURBINES: Six Steps to successful repaSix steps smir of GT components

Step 1: How to assess the condition of GT parts onsite
Step 2: Preparing meaningful component repair specs
Step 3: Selecting the appropriate vendor to refurbish turbine parts
Step 4: Key stages in the repair process
Step 5: Verification during the refurbishment process
Step 6: Verifying final inspection

CONTROL SYSTEMS

Cogen plant controls replacement: ‘non-proprietary’ is key.

SOFTWARE SOLUTIONS

Make heat-rate models work for trade, bid strategies, too.

USER GROUP REPORTS

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501F and 501G USERS GROUPS

Maintain your competitive edge by attending the upcoming Savannah meeting. Coverage includes highlights of safety forum, F users’ open discussion session , G users’ open discussion session, MHPS presentations, Vendorama.

COMBINED CYCLE USERS GROUP

Focus on HRSGs, piping, valves, and water treatment of value to all owner/operators of combined cycles and cogen plants. Best practices, Individual Achievement Awards, hot walkdown and offline inspections, water chemistry, BOP.

WESTERN TURBINE USERS

Highlights of upcoming 25th Anniversary Meeting; more than 1200 attendees expected.

7F USERS GROUP

Factor HRSGs, steam turbines into smart-start strategy.

PLANTS SHARING BEST PRACTICES

ABest Practices Badge 2014mman East Power Plant
    Fogging system boosts output, revenue
    Water consumption review, optimization

Athens Generating Plant
    ACC performance optimization
    Developing, implementing comprehensive fall protection
    Operator training program keeps staff on its toes

Blackhawk Station
    Bearing-tunnel conduit cooling-air mod
    GT lube-oil-supply reliability enhancements
    Lube-oil system mod prevents fuel-nozzle fouling

Colusa & Gateway Generating Stations BP 14 pics
    Cycle chemistry program for cycling plants
    Job safety analysis (JSA) for every job
    Contractor sponsor program
    Integrated outage work packages

Corona Cogeneration Plant
    ‘Interactive Plant’ tracks PMs, calibrations, documentation, important dates

Granite Ridge Energy
    Use new technologies to assess condition of hard-to-access components

Holden Power Plant
    Suite of V84.2 durability improvements extends outage, inspection intervals

Kleen Energy Systems LLC
    Safety improvements for battery maintenance

Mid-Georgia Cogen
    Enhanced enclosure cooling-fan control
    Verify proper operation of protection systems
    GT air leakage test procedure

Nevada Sun Peak
    Plant relocates evap-cooler pumps to improve safety, system reliability

NV Energy Inc
    Engineer development and retention program

Panoche Energy Center
    Real-time performance monitoring maximizes variable revenue

Pleasant Valley Station
    SFC fuse failure mitigation boosts starting reliability
    More accurate testing of demin water

Rosemary Power Station
    Plant personnel turn workforce attrition into a positive

AROUND THE INDUSTRY

OPEN LETTER

From 501F Users Group steering committee to all 501F Users.

COMMENTARY

Encouraging STEM education benefits all.

USER GROUPS COLLABORATE

STUG, CCUG to share venue.

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