Performance evaluation of corrosion probes in simulated WVNS tank 8D-2 waste: WVNS tank farm process support

Technical Report · Fri Jul 01 04:00:00 EDT 1994

DOI:https://doi.org/10.2172/10176581· OSTI ID:10176581

Elmore, M R

Five corrosion probes were received from West Valley Nuclear Services for evaluation in simulated tank 8D-2 3rd-stage sludge wash slurry. The same waste slurry simulated was also used in a series of ongoing corrosion studies assessing the effects of in-tank sludge washing on the integrity of tank 8D-2. Two of the corrosion probes were installed in the coupon corrosion test vessels operating at {approximately}150{degrees}F to compare performance of the probes with that observed by coupon tests conducted in the same vessels. Corrosion rate data calculated from electrical resistance measurements of the corrosion probes were evaluated for this study using two slightly different approaches. One approach uses the total length of exposure of the probe to give a ``time-averaged`` value of the corrosion rate. The other approach uses a shorter period of time (relative to the length of the test) in the calculation of corrosion rate, and is referred to as the ``instantaneous`` rate. The interpretation of the probe data and the implications of corrosion rates calculated with either of these methods are discussed in this report.

• Research Organization: Pacific Northwest Lab., Richland, WA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 10176581
• Report Number(s): PNL--9978; ON: DE94017466
• Country of Publication: United States
• Language: English

Related Subjects

052001
054000
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
CORROSION
ELECTRIC PROBES
HEALTH AND SAFETY
PITTING CORROSION
RADIOACTIVE WASTE PROCESSING
SLURRIES
SPENT FUELS
TANKS
UNDERGROUND STORAGE
VITRIFICATION
WASTE PROCESSING
WEST VALLEY PROCESSING PLANT