Search
Filters
Close

96132 CORROSION PERFORMANCE OF ALLOY G3 AND 304L STAINLESS STEEL IN SIMULATED HIGH LEVEL WASTE EVAPORATOR SOLUTIONS AND ASSESSMENT OF SERVICE LIFE OF EVAPORATOR TUBES

Product Number: 51300-96132-SG
ISBN: 96132 1996 CP
Author: G. T. Chandler, R. L. Sindelar, B.J. Wiersma, J. I. Mickalonis
$0.00
$20.00
$20.00
The evaporator steam tubes of high level radioactive waste evaporators at the Savannah River Site (SRS) are operated at temperatures up to approximately 150°C when immersed in caustic chemistries. The tubes are periodically thermally-shocked to produce flexure during a desalt/descale operation to recover their heat transfer characteristics. The tube materials alloy G3 and AISI Type 304L stainless steel were tested with Slow Strain Rate Tensile and U-bend specimens in high caustic (45 weight % sodium hydroxide) solutions at approximately 145°C to determine their potential susceptibility to stress corrosion cracking at bounding service conditions. Slight cracking of alloy G3 was observed in the U-bend test whereas the remaining test results did not show any evidence of stress-related environmental effects. A structural evaluation of the tubes showed that the localized stresses during the desalt/descale operation were near yield; however, the usage factor calculated per the ASME code is nearly zero for the anticipated 6000 lifetime cycles and significant growth of postulated preexisting flaws is not predicted. The desired service life of 30 years might be achievable for the tubes of the Replacement High Level Waste Evaporator and the existing evaporators made of alloy G3 and alloy G30, respectively. Keywords: High Level Radioactive Waste, Slow Strain Rate Test, U-Bend, Service Life, Alloy G3, Alloy G30, 304L
The evaporator steam tubes of high level radioactive waste evaporators at the Savannah River Site (SRS) are operated at temperatures up to approximately 150°C when immersed in caustic chemistries. The tubes are periodically thermally-shocked to produce flexure during a desalt/descale operation to recover their heat transfer characteristics. The tube materials alloy G3 and AISI Type 304L stainless steel were tested with Slow Strain Rate Tensile and U-bend specimens in high caustic (45 weight % sodium hydroxide) solutions at approximately 145°C to determine their potential susceptibility to stress corrosion cracking at bounding service conditions. Slight cracking of alloy G3 was observed in the U-bend test whereas the remaining test results did not show any evidence of stress-related environmental effects. A structural evaluation of the tubes showed that the localized stresses during the desalt/descale operation were near yield; however, the usage factor calculated per the ASME code is nearly zero for the anticipated 6000 lifetime cycles and significant growth of postulated preexisting flaws is not predicted. The desired service life of 30 years might be achievable for the tubes of the Replacement High Level Waste Evaporator and the existing evaporators made of alloy G3 and alloy G30, respectively. Keywords: High Level Radioactive Waste, Slow Strain Rate Test, U-Bend, Service Life, Alloy G3, Alloy G30, 304L
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for 96133 CORROSION ISSUES IN THE LONG TERM
Available for download

96133 CORROSION ISSUES IN THE LONG TERM STORAGE OF ALUMINUM-CLAD SPENT NUCLEAR FUELS

Product Number: 51300-96133-SG
ISBN: 96133 1996 CP
Author: M.R. Louthan, Jr., H. B. Peacock, R. L. Sindelar, N. C. Iyer
$20.00
Picture for 96134 CORROSION OF ALUMINUM ALLOYS IN
Available for download

96134 CORROSION OF ALUMINUM ALLOYS IN SIMULATED DRY STORAGE ENVIRONMENTS

Product Number: 51300-96134-SG
ISBN: 96134 1996 CP
Author: H.B. Peacock, R.L. Sindelar, P.S. Lam
$20.00
Picture for 96135 MATERIALS PERFORMANCE IN A RADIOACTIVE
Available for download

96135 MATERIALS PERFORMANCE IN A RADIOACTIVE WASTE GLASS MELTER SYSTEM ENVIRONMENT

Product Number: 51300-96135-SG
ISBN: 96135 1996 CP
Author: K.J. Imrich, C.F. Jenkins
$20.00