Microstructural analysis of service exposed IBN1 MARBN steel boiler tubing
Scott Lockyer
Mark Jepson
Xu Xu
Will Philpott
2134/38356
https://repository.lboro.ac.uk/articles/conference_contribution/Microstructural_analysis_of_service_exposed_IBN1_MARBN_steel_boiler_tubing/9237071
Extensive research and development has been undertaken in the UK on MarBN steels. These were
first proposed by Professor Fujio Abe from NIMS in Japan. Within the UK, progress has been
made towards commercialisation of MarBN-type steel through a series of Government funded
industrial collaborative projects (IMPACT, IMPEL, INMAP and IMPULSE). As part of the
IMPACT project, which was led by Uniper Technologies, boiler tubes were manufactured from
the MarBN steel developed within the project, IBN1, and installed on the reheater drums of Units
2 and 3 of Ratcliffe-on-Soar Power Station. The trial tubes were constructed with small sections
of Grade 91 tubing on either side of the IBN1 to allow direct comparison after the service
exposure. This is the world’s first use of a MarBN steel on a full-scale operational power plant. In
September 2018 the first tube was removed having accumulated 11,727 hours operation and 397
starts. This paper reports microstructural and oxidation analysis, that has been undertaken by
Loughborough University as part of IMPULSE project, and outlines future work to be carried out.
2019-07-18 10:35:47
untagged
Materials Engineering not elsewhere classified