HRSG User’s Group

Today’s heat recovery steam generators (HRSGs) are suffering reliability problems, mainly because they’re being operated in the cycling mode instead of the baseload mode for which they were designed. The good news is HRSG suppliers are adapting to the market demands and are designing the next generation of HRSGs to have cycling-friendly—also called fast-start—features. One […]

The North American Electric Reliability Corp. (NERC) recently issued a regulation for all power producers to test their electrical systems for proper coordination between protective relays. This protective-relay coordination standard number 27 (PRC-27) presents a big challenge for all power plants, but particularly for combined cycle/cogeneration plants, whose lean staffs lack the electrical engineering personnel […]

When U.S. President Jimmy Carter signed into law the Public Utility Regulatory Policies Act of 1978 (PURPA), he unintentionally ignited the worldwide deregulation of electricity markets, which in turn began a worldwide technology race between two distinct types of power plants: the newly created, industrial-scale plant that PURPA dubbed “cogeneration” and the traditional, utility-scale power […]

If you look up the history of users’ groups, you’ll find that many early organizations focused on computers. While it’s hard to confirm all the details, at least one source suggested that the first

The 2019 HRSG User’s Group Annual Meeting will co-locate with the 2019 ELECTRIC POWER Conference & Exhibition in Las Vegas, Nevada, offering extended conference content for both conferences and allowing HRSG User’s Group vendors to exhibit with the ELECTRIC POWER Exhibition. Houston, TX, October 29, 2018 – POWER announced today the co-location of the HRSG […]

On many combined cycle projects, the major decisions about boiler chemistry are left until after the plant has been designed, equipment is procured, and construction is well underway. However, the best time to make these chemistry decisions is in the design phase of the project. That enables the engineering, procurement, and construction (EPC) contractor to […]

For a decade or more, heat recovery steam generator (HRSG) users have heard that Grade-91 tubing (T-91) is susceptible to microstructure damage from improper heat treatment. Now, a new damage mechanism in T-91 tubing has been identified, which HRSG users heard about at the February 2018 HRSG User’s Group Conference. During the discussion on heat […]

A recent article in The Wall Street Journal heralded the following: “Power Plants Bloom Even as Electricity Prices Wilt.” Understandably, the WSJ editors are excited about the current spate of combined cycle construction projects. I’m also pleased about the growth in our sector (Figure 1). But I’m less sanguine about our ability to execute all […]

Owners and contractors can run into contractual disputes during combined cycle construction projects. Often, the disagreements snowball into lawsuits, which create a lot of activity in attorney offices, but can actually stop activity at the construction site. Engineers and laborers frequently end up taking off their hard hats and setting down their welding torches to […]

Today’s construction boom in the combined cycle/cogeneration sector is great news for suppliers of gas turbines (GTs), heat recovery steam generators (HRSGs), and engineer-procure-construct (EPC) services. But before this boom advances from artist’s sketches (Figure 1) to first fires, the designers of all those next-generation combined cycles should pause to reflect on the lessons learned […]