In this part of the work, a fracture mechanics approach to the assessment of steel toughness requirements is demonstrated. (W 239) (1)

Toughness requirements = Requisitos de resistência

There are no standardised crack front straightness requirements for SENT specimens, so equivalent requirements for SENB specimens are applied, but not often met. (W 52) (2)

Straightness requirements = Requisitos de retidão

Annex F, the ASME code provides more specific and stringent requirements for the performance and qualification of temper bead welding. (W 45) (3)

Stringent (tight) requirements = Requisitos de rigorosidade (firmeza)

(1) Assessing toughness levels for steels to determine the need for PWHT – Part 2

D J Abson (a) , Y Tkach (a) , I Hadley (a) and F M Burdekin (b)

(a) TWI

(b) Formerly Professor at University of Manchester Institute of Technology

Published in Welding Journal, vol.85, no.5, May 2006, pp.29-35.

(2) Crack front straightness qualification in SENT specimens

Andrew R. Malpas, Philippa L. Moore, and Henryk G. Pisarski 

TWI Ltd

Cambridge, UK

Paper presented at ISOPE-2012. The 22nd International Ocean and Polar Engineering Conference, Rodos Palace Hotel, Rhodes (Rodos), Greece, June 17-22, 2012.

(3) Comparison between ASME and RCC-M requirements for welding and NDT

Marcello Consonni and Peter Mudge 

TWI Ltd.

Cambridge, UK

Paper presented at 20th International Conference on Nuclear Engineering. 30 Jul – 3 Aug 2012, Anaheim, CA, USA. Paper No. ICONE20POWER2012-54190.