News

Benefits of extended thermocouple installations on HRSG tubes

If your plant suffers from frequent failures, installing additional thermocouples can prove to be invaluable when assessing the actual root cause of the failures.

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HRSG Inspection Planning Guide

Inspection is part of routine maintenance for any Heat Recovery Steam Generator (HRSG).  Visual inspections are performed at regular intervals in accordance with the requirements of regulatory bodies and insurers.  In the US statutory inspections are mandated typically every year although some jurisdictions allow justification for longer intervals.   Additional inspections are sometimes performed to establish the baseline condition of the HRSG (often early in life, but not always) or to perform less frequent special inspections to confirm component integrity. 

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Using Thermohydraulic Simulations to Assess HRSG Performance

Thermohydraulic simulations can provide detailed heat recovery steam generator (HRSG) data to help determine the root cause of failures, predict the degree of wear from various mechanisms, and assess the overall thermal efficiency of the boilers. In this article, the results obtained from three case studies are presented to show the real-world benefits obtained through thermodynamic simulations.

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Tetra In Action #12, July 2018

Managing the Power Piping in CCGT Plants

Risk of failure and attendant personnel safety concerns are always present when operating highly-pressurized systems.  Over the years, the occurrence of catastrophic events has driven improvements in construction codes and updated recommendations for O&M practices.  As part of this trend, expanded requirements for operations and maintenance (O&M) were recently added to the ASME Code for Power Piping—ASME B31.1.   The “Chapter VII Operation and Maintenance” was created in 2007 to prescribe guidelines that promoted early failure detection and overall safety. This was a fundamental change to the scope of B31.1, which up until then was strictly a design code; going forward, it now serves a dual purpose…

Read the full story by our colleague Robert Rosario, published online in Power Magazine here.

Read more: Tetra In Action #12, July 2018