{"id":359159,"date":"2024-10-20T01:24:46","date_gmt":"2024-10-20T01:24:46","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-184902015\/"},"modified":"2024-10-26T02:04:44","modified_gmt":"2024-10-26T02:04:44","slug":"bs-en-iso-184902015","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-184902015\/","title":{"rendered":"BS EN ISO 18490:2015"},"content":{"rendered":"
This International Standard specifies the form of the optotype, the quality requirements for the chart, the test procedure, and the acceptance level for near vision acuity of NDT personnel. It also addresses the qualification requirements for personnel permitted to carry out the test.<\/p>\n
This International Standard only addresses near vision acuity under defined conditions similar to those encountered during routine NDT inspection. It does not address an individual\u2019s overall visual acuity and users are advised to consider the need for a general eye examination by specialist medical personnel to ensure general vision acuity is appropriate for job function.<\/p>\n
This International Standard does not address colour vision requirements.<\/p>\n
PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
---|---|---|---|---|---|---|---|
4<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
6<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
7<\/td>\n | Introduction <\/td>\n<\/tr>\n | ||||||
9<\/td>\n | 1\tScope 2\tNormative references 3\tTerms and definitions 4\tChart print quality <\/td>\n<\/tr>\n | ||||||
10<\/td>\n | 5\tHealth and safety 6\tPersonnel administering the test 7\tTest charts 8\tTest procedure 8.1\tGeneral 8.2\tIllumination level <\/td>\n<\/tr>\n | ||||||
11<\/td>\n | 8.3\tEye to chart distance 8.4\tEyewear 8.5\tCandidate\u2019s responses 8.6\tThe test 9\tAcceptance level <\/td>\n<\/tr>\n | ||||||
12<\/td>\n | Annex\u00a0A (normative) Format and size of the optotypes <\/td>\n<\/tr>\n | ||||||
15<\/td>\n | Annex\u00a0B (normative) Spacing of the optotypes <\/td>\n<\/tr>\n | ||||||
16<\/td>\n | Annex\u00a0C (informative) Example test chart (Not to scale) <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Non-destructive Testing. Evaluation of vision acuity of NDT personnel<\/b><\/p>\n |