BS EN ISO 11666:2018 Non-destructive testing of welds. Ultrasonic testing. Acceptance levels

BS EN ISO 11666:2018

Non-destructive testing of welds. Ultrasonic testing. Acceptance levels

Status : Current   Published : March 2018



What is this standard about?

This international standard specifies acceptance levels for full penetration ultrasonic non-destructive testing of welded joints in ferritic steels.

Who is this standard for?

  • Manufacturers of welded joints
  • Suppliers of welded joints
  • Professionals responsible for acceptance inspections
  • Quality assessors
  • Regulatory bodies

The following industries are the most likely to use this standard:

  • Oil and gas
  • Power
  • Aerospace
  • Engineering and fabrication
  • Automotive
  • Rail
  • Shipbuilding
  • Defence
  • Off highway
  • Electronics
  • Medical
  • Equipment, consumables and materials
  • Nuclear
  • Structural steel and construction

Why should you use this standard?

It specifies ultrasonic acceptance levels 2 and 3 for full penetration welded joints in ferritic steels, which correspond to ISO 5817 quality levels B and C and applies to welds 8 mm to 100 mm thick.

The standard can also be used for other types of welds, materials and thicknesses, as long as examinations take the geometry and acoustic properties of the component into account, and an adequate sensitivity can be employed to enable the acceptance levels of this international standard to be applied.

The nominal frequency of probes used in this standard is between 2 MHz and 5 MHz unless attenuation or requirements for higher resolution call for other frequencies. Give careful consideration to using these acceptance levels in conjunction with frequencies outside this range.

NOTE 1: An acceptance level corresponding to ISO 5817 quality level D is not included because ultrasonic testing is generally not requested for this weld quality.

NOTE 2: These acceptance levels apply to testing carried out in accordance with ISO 17640.

What’s changed since the last update?

This revision updates and corrects errors in the 2010 edition. It also introduces state of the art methodology and technology.

Standard NumberBS EN ISO 11666:2018
TitleNon-destructive testing of welds. Ultrasonic testing. Acceptance levels
Publication Date09 March 2018
Normative References(Required to achieve compliance to this standard)ISO 5817:2014, ISO 5577, ISO 17640, ISO 23279, ISO 17635
Informative References(Provided for Information)No other standards are informatively referenced
ReplacesBS EN ISO 11666:2010
International RelationshipsEN ISO 11666:2018,ISO 11666:2018
Draft Superseded By17/30342169 DC
DescriptorsTesting conditions, Welded joints, Transverse joints, Welding, Ultrasonic testing, Acceptance (approval), Dimensions, Acceptance inspection, Sensitivity, Non-destructive testing, Thickness, Grades (quality)
Title in FrenchEssais non destructifs des assemblages soudés. Contrôle par ultrasons. Niveaux d'acceptation
Title in GermanZerstörungsfreie Prüfung von Schweißverbindungen. Ultraschallprüfung. Zulässigkeitsgrenzen
ISBN978 0 580 94393 5
File Size781 KB

 Your basket
Your basket is empty

Multi-user access to over 3,500 medical device standards, regulations, expert commentaries and other documents

Worldwide Standards
We can source any standard from anywhere in the world

Tracked Changes

Understand the changes made to a standard with our new Tracked Changes version


The faster, easier way to work with standards

Customers who bought this product also bought

  • BS ISO 45001:2018
    Occupational health and safety management systems. Requirements with guidance for use
  • BS EN ISO 23278:2015
    Non-destructive testing of welds. Magnetic particle testing. Acceptance levels
  • BS EN ISO 17638:2016
    Non-destructive testing of welds. Magnetic particle testing
  • BS 45002-0:2018
    Occupational health and safety management systems. General guidelines for the application of ISO 45001