PSI - Issue 19

Mladen Lukić / Procedia Structural Integrity 19 (2019) 655–664 Author name / Structural Integrity Procedia 00 (2019) 000–000

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2.2.11. Sub-task 11: Post-weld treatment The benefit of post-weld treatment has been demonstrated in various research projects and industry applications, but harmonized design rules are still missing. Some rules could nevertheless be given on the basis of national and IIW documents. The Project Team will need to review and incorporate any existing material into the new drafts of EN 1993-1-9 (2005), adapting it when necessary to ensure that it is consistent with the rest of its work. The key benefit is expected to be new design rules for consideration of post-weld treatment while increasing strength of new and existing structures and thus avoiding unjustified oversizing or useless expenses. Its output would be the addition new clauses if needed. 3. Time schedule The work on the revision of EN 1993-1-9 belongs to Phase 3 of the Response to Mandate M/515 (2013), meaning that the official work on drafting started in July 2018. The first draft of the revised standard, prEN 1993-1-9, was submitted to CEN in April 2019. The second one is due to be submitted in April 2020 and the final document in April 2021. After that will follow a period of reviewing it by the NSBs (National Standardization Bodies), taking into account these reviews, another reviewing, translation into French and German, publication followed by the development of National Annexes. All that means that the standard will not come into widespread use reasonably before the year 2024 at the earliest. All those phases can be seen in Fig. 5.

Fig. 5. Time schedule of the work on the revision of Eurocodes

4. Progress achieved so far In the first draft, prEN 1993-1-9 (2019), made available to CEN in April 2019 the following was introduced: 1. All the results of the Systematic Review classified (1): approximately 50 comments; Systematic review is a process of reviewing current standards in order to take into account the comments in its revision. The results of the systematic review on EN 1993-1-9 (2005) were collected in January 2017 and analysed by a three-member ad-hoc group formed within CEN/TC 250/SC 3/WG 9 and then discussed within the working group. There were 280 comments in total (some split in two, totalling 287 results) and the classification was: - 18.5% classified (1): Fully accepted for PT