Lifting holes locationThe following requirements are necessary to ensure the mechanical integrity of the threadedhole for eyebolts:1) Forged steels: Admissibility Limit ERS3 according to HZLM6030412) Steel plates: Quality Class S2/E3 according to EN101603) Cast steels (Base material) before drilling the hole: refer to EN12680-1, Severity Level 2 forvolumetric discontinuities.Severity Level 1 for the thread surface visual inspection, according to HTGD620214.The controls of base material shall have a minimum extension of:- 3 times the bore diameter- with a depth extension of 2 times the bore diameter.7 Temporary handling featuresDuring manufacturing process, it can be useful to weld some temporary lifting features, such as liftinglugs.The location of the welded part shall be approved by design office, before proceeding.The requirements are the same as for standard lifting features.Before the component being sent on site, these temporary features shall be removed, and the surfacecleaned.