{"id":385248,"date":"2024-10-20T03:29:49","date_gmt":"2024-10-20T03:29:49","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-172902021\/"},"modified":"2024-10-26T06:20:15","modified_gmt":"2024-10-26T06:20:15","slug":"bs-en-172902021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-172902021\/","title":{"rendered":"BS EN 17290:2021"},"content":{"rendered":"

This document specifies the application of the time-of-flight diffraction (TOFD) technique in testing of metals for quantifying loss of thickness due to erosion and\/or corrosion.<\/p>\n

This document applies to all types of corrosion and\/or erosion damage, particularly those defined in EN ISO 16809<\/span><\/span> .<\/p>\n

This document applies to unalloyed or low-alloyed steels.<\/p>\n

It applies to components with a nominal thickness ? 6 mm. For smaller thicknesses, feasibility tests are performed to validate the test technique.<\/p>\n

For other materials, feasibility tests are essential, too.<\/p>\n

The TOFD technique can be used as a stand-alone technique or in combination with other non-destructive testing techniques, for in-service testing, in order to detect material loss caused by erosion and\/or corrosion.<\/p>\n

This technique is based on analysis of TOFD images using reflected and\/or diffracted ultrasonic signals.<\/p>\n

This document does not specify acceptance levels.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nNational foreword <\/td>\n<\/tr>\n
5<\/td>\nEuropean foreword <\/td>\n<\/tr>\n
6<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
7<\/td>\n4 General specifications
4.1 General
4.2 Limits of the test technique
5 Qualification of personnel
6 Test equipment
6.1 Instrument
6.2 Probes and TOFD set-up
6.3 Encoder <\/td>\n<\/tr>\n
8<\/td>\n6.4 Combined equipment
6.5 Reference blocks
6.6 Couplant
7 Application of the technique
7.1 Surface condition
7.2 Temperature
7.3 Marking
7.4 Selection of probes and PCS <\/td>\n<\/tr>\n
9<\/td>\n7.5 Instrument settings
7.5.1 Time window <\/td>\n<\/tr>\n
10<\/td>\n7.5.2 Time-to-depth conversion
7.5.3 Sensitivity setting
7.5.4 Checking of the combined equipment <\/td>\n<\/tr>\n
11<\/td>\n7.6 Testing
7.6.1 General
7.6.2 Scan plan
7.6.3 Complementary evaluation
7.6.4 Scan increment
7.6.5 Scanning speed <\/td>\n<\/tr>\n
12<\/td>\n8 Interpretation and analysis of TOFD images
8.1 Validation of TOFD images
8.2 Relevant indications
8.3 Determination of dimensions and location
8.3.1 General <\/td>\n<\/tr>\n
13<\/td>\n8.3.2 Flat objects <\/td>\n<\/tr>\n
14<\/td>\n8.3.3 Convex objects <\/td>\n<\/tr>\n
16<\/td>\n8.3.4 Concave objects <\/td>\n<\/tr>\n
17<\/td>\n8.3.5 Maximum height of an eroded and\/or corroded area
8.3.6 Location of a discontinuity
8.3.7 Length of a discontinuity
9 Test report <\/td>\n<\/tr>\n
19<\/td>\nAnnex A (informative) Example of a reference block <\/td>\n<\/tr>\n
21<\/td>\nAnnex B (informative) Examples of typical TOFD images of loss of thickness due to erosion and\/or corrosion <\/td>\n<\/tr>\n
24<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Non-destructive testing. Ultrasonic testing. Examination for loss of thickness due to erosion and\/or corrosion using the TOFD technique<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2021<\/td>\n26<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":385256,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-385248","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/385248","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/385256"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=385248"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=385248"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=385248"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}