In-Situ Nondestructive Measurements of Key Mechanical Properties of Reactor Pressure Vessels Using Innovative SSM Technology

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$600,000.00
Award Year:
1997
Program:
SBIR
Phase:
Phase II
Contract:
DE-FG02-96ER82115
Award Id:
34579
Agency Tracking Number:
34579
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Advanced Technology Corp.o (Currently Advanced Technologies/Laboratories Intl)
115 Clemson Drive, Oak Ridge, TN, 37830
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Mr. Fahmy M. Haggag
President
(423) 483-5756
Business Contact:
Mr. Fahmy M. Haggag
President
(423) 483-5756
Research Institution:
n/a
Abstract
40345 November 12, 1996 Advanced Technology Corporation This project will develop new techniques for in-situ nondestructive measurements of key mechanical properties of reactor pressure vessels (RPVs) subjected to irradiation embrittlement. The effort will build on a recently developed stress-strain microprobe (SSM) system which tests minimal material and determines several mechanical properties of metallic structures. The SSM system utilizes a nondestructive, automated bail indentation (ABI) technique which provides a localized direct measurement of the stress-strain curve at quasi-static strain rates at room temperature. Phase I will develop testing and analytical procedures for: (1) ABI testing at high strain rates to compare with dynamic tensile test results and to develop new correlations between dynamic ABI test results and dynamic Charpy impact properties; (2) ABI testing at low and high temperatures (-130oC to 288oC); (3) development of correlations to determine fracture toughness from ABI-measured flow properties, and (4) in-situ testing of steel plates and a section from a commercial RPV (after partial removal of its inner cladding). In Phase II, numerous ABI tests will be conducted on irradiated materials (mostly from utility surveillance programs) and a new prototype of the SSM testing unit (robotistic for in-situ testing of the areas of most concern inside the beltline region of a commercial RPV) will be developed and manufactured. Anticipated Results/Potential Commercial Applications as described by the awardee: Nuclear applications should include testing of RPVs before and after their postirradiation thermal annealing, vessel supports, core internals, etc. This will ensure safe operation and avoid premature decommissioning of power plants and other expensive structural components. Furthermore, the SSM technology should be used to monitor aging and assess the integrity of structural components over their design service life and in lifetime extension evaluations in many industries.

* information listed above is at the time of submission.

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