Fluor-Hanford 3013 Digital Radiography Dead Zone Mitigation Project Pressure Test Report

Gibbs, K.

Savannah River Site (S.C.)

关键词: Industrial Radiography;    Pressurization;    Radioactive Materials;    42 Engineering;    Hanford Reservation;   

DOI  :  10.2172/821497
RP-ID  :  WSRC-TR-2003-00485
RP-ID  :  AC09-96SR18500
RP-ID  :  821497

美国|英语

来源: UNT Digital Library

【 摘 要 】

The use of digital radiographic (DR) measurement of lid deflection as an indication of pressurization of the 3013 inner can was first reported by the Savannah River Technology Center (SRTC). The conclusions of this report were that for cans with relatively large initial concavity, lid deflection could be used to meet the 3013 standard (DOE-STD-3013-2000) requirement for a nondestructive indication of a pressurization of 100 psig. During acceptance testing of the system in the Spring of 2003, it was confirmed that for some cans the DR measured lid deflection could become insensitive to the change in lid deflection when compared to actual mechanical measurements. The basic explanation of this phenomenon is that characteristics of the lid geometry such as tilt and wobble can obfuscate the bottom of the lid where the deflection is measured. The purpose of this report is to document the results of the pressure testing and the efficacy of the alternate imaging and analysis methods developed to mitigate the dead zone problem. Prior to review of the results, a review of the current method and an introduction to the newly developed methods and techniques is provided.