Database Development Summary of ASTM E 900 Efforts

Database Development – Summary of ASTM E 900 Efforts (“PLOTTER”) & Lessons Learned Mark Kirk Central Research Institute of Electric Power Industry ENTENTE Project (European Database For Multiscale Modelling of Radiation Damage) Kick Off Meeting (Virtual) 9 -10 September 2020 1

Outline u ASTM E 900 – Background u ASTM E 900 – Current Activities u Observations & lessons learned from the E 900 / “PLOTTER” effort 2020 08 June 2021 2

Background 2011 -2015 u ASTM Standards re-visited & re-voted on every 5 years (roughly) u In 2011 ASTM began a thorough evaluation of thenexistent ETCs u Compiled a large database of LWR & MTR data to evaluate ETCs u Data stored in Excel “PLOTTER” tool 2020 08 June 2021 3

Background (continued) 2011 -2015 u Determined that no existent ETC represented data to consensus satisfaction u Decided to calibrate a new ETC to LWR surveillance data (BASELINE) u New Standard Guide (E 900 -15) adopted in January 2015 u Detailed technical basis (Adjunct) published in September 2015 2020 08 June 2021 4

Current PLOTTER/E 900 Update (1 of 3) Update and systematize the PLOTTER database Adds new information from u Supports ASTM’s required 5(ish)-year review of E 90015’s continued adequacy u Expands scope of current database u Establishes a more stable foundation for future updates and simplifies their implementation 2020 • Capsules tested recently • Old reports recently obtained or released Corrects small errors and inconsistencies found in the 2015 PLOTTER 08 June 2021 5

Current PLOTTER/E 900 Update (2 of 3) PLOTTER-2015 had only DT 41 J Update and systematize the PLOTTER database Current aim is to add • • u Supports ASTM’s required 5(ish)-year review of E 90015’s continued adequacy u Expands scope of current database u Establishes a more stable foundation for future updates and simplifies their implementation 2018 T 41: Unirradiated & irradiated USE: Unirradiated & irradiated dpa (as available) Updated fluence & temperature values (as available) Longer term (next time? ) • • • 08 June 2021 YS: Unirradiated & irradiated (need a common analysis approach so values are comparable) PWHT information T 0: Limited data now available 6

Current PLOTTER/E 900 Update (3 of 3) Update and systematize the PLOTTER database Adopts a true database format implemented within an Excel workbook u Supports ASTM’s required 5(ish)-year review of E 90015’s continued adequacy u Expands scope of current database u Establishes a more stable foundation for future updates and simplifies their implementation 2018 • Database • Minimizes potential for future data entry errors • Ensures consistency between old and new data • Enables change documentation & tracking • Workbook ease of use without special training 08 June 2021 7

Observations & Lessons Learned (1 of 2) u A true database vs. Excel Ø A true database is better at databasing tasks (of course!) than Excel Ø But a true database creates barriers to use by many engineers (need for specialized software and knowledge) Ø In an attempt to optimize, ASTM is using database tools (VLOOKUP, INDEX/MATCH, etc. ) embedded within an Excel workbook u Data traceability (metadata) Ø Important to keep track of each datum’s origin (what table in what report, if possible) Ø Especially true for long-lived datasets (e. g. , data from surveillance programs) 2020 08 June 2021 8

Observations & Lessons Learned (2 of 2) u Data quality Ø Some of the most industrially significant data (surveillance) will, relative to the standards of a research study, be judged to be of “low quality” Ø However, even scattered data contains valuable information about mean trends (law of large numbers) Ø What we want to predict (T 0, T 41 J) has high aleatoric uncertainty even under the best conditions Path of experimental centroid 2020 08 June 2021 9

Other Lessons (beyond PLOTTER) u Database repository: on-line? vs. stand-alone <a lesson from REAP> Ø On-line databases require a constant input of ¥/$/€/£ to keep them functioning … keeping the database on-line after the project ends can be a problem Ø On-line databases have installation specific aspects that complicate moving them from Server A to Server B Ø Stand-alone databases may become un-readable over time (remember d. BASE? ) u Either way, a data maintenance plan (& funding) needs to live beyond the project 2020 08 June 2021 10

Thank you for your attention! Sunrise CRIEPI Sajima Marina (near CRIEPI / Kanagawa) JAPAN Sunset Unity, New Hampshire USA 2020 08 June 2021 11