IAPWS - Power Cycle Chemistry Group

Dear all, After many years and months of iterative work, design and development of the IAPWS Decay Map, you will find attached the current release of the White Paper on Sampling, Monitoring and Analysis of Corrosion Products in Flexible and Fast Start Plants. The work was initiated at the annual meeting of the PCC WG in Moscow in 2014 following publication of the Corrosion Product Monitoring TGD for stable/steady plants, TGD6-13(2014). ? Most recently the Sub-Task Group (STG) has been Dooley (Chair), McCann, Skovbjerg and McAllister. The document includes the results from two IAPWS International Collaboration Projects conducted by Maja Skou Jensen and Mads Skovbjerg under the guidance of Karsten Thomsen with plant monitoring in Denmark, Australia, UK and the US. This is a very exciting development which for the first time in power plant chemistry allows plants and operators to not only monitor the corrosion products using proxy techniques but also provides advice and guidance, through the new IAPWS Decay Map, to plants on whether their normal operating chemistry and shutdown procedures are optimum or can be improved. The guidance for the latter is included in the White Paper. As agreed at the recent IAPWS meeting in Boulder, USA a white paper is a WG document and a preliminary version of an IAPWS TGD where we are looking to test out the concepts and if necessary conduct further research before the document becomes an “official” IAPWS TGD. ? Please direct any specific feedback or questions on this specific document to the PCC Working Group Chair - Dr Barry Dooley, [email protected] ?

The IAPWS Power Cycle Chemistry Group (PCC) is the primary IAPWS Working Group interested in water/steam related chemistry for steam power cycles in conventional fossil, combined cycle, nuclear, solar thermal and geothermal power cycles, along with other industrial process applications of steam including biomass and electrical boilers and other non-conventional and emerging steam generation technologies .? ? Membership of PCC is made up of global water/steam experts, researchers, designers, users?and other interested persons. Currently over 20 different countries are?represented in PCC. The PCC working group was established by IAPWS in 1990.? ? The key purpose of PCC is to provide technical guidance, obtained by?the?international consensus of experts working across the whole water/steam industry across all these areas, and to make this technical guidance freely and easily available across the world.?The current suite of documents covers the key requirements for the effective management of steam power cycle chemistry, including feedwater and boiler water treatments, steam purity requirements, on-line monitoring instrumentation, corrosion product monitoring and the application of film-forming substances. The documents are written in formats that allow plant operators to customize the guidance for each type of plant.?Approved and issued IAPWS PCC Technical Guidance Documents are available to download, for free, from the IAPWS website -?https://lnkd.in/gvRPdwQS? ? The IAPWS PCC Working Group also provides an opportunity for industry experts to meet annually and discuss research, emerging industry issues and new technologies and to identify areas of future industry research.? ? As well?as?meeting at the annual IAPWS meeting to share knowledge and experiences and collaboratively work on future Technical Guidance Documents and ICRNs,?PCC members engage throughout the year at other IAPWS supported meetings and conferences, webinars and specific task group meetings and calls. Examples of other IAPWS supported events include the European HRSG Forum, the International Conference on Film Forming Substances and the Australasian Boiler and HRSG User Group. Details of future IAPWS annual meetings can be found here -?https://lnkd.in/gy6ez6HQ? ? Membership of the PCC working group is completely open.?Anyone working or who has an interest in water/steam related chemistry for steam power cycles in conventional fossil, combined cycle, nuclear, solar thermal and geothermal power cycles, along with other industrial process applications of steam including biomass and electrical boilers and other non-conventional and emerging steam generation technologies is welcome to attend PCC meetings and to contribute to PCC work.? ?

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