Characterization of TMI-type wastes and solid products. Quarterly progress report, October-December 1981. Volume 1, No. 4
A research program is under way to systematically characterize the type of radwastes which may be generated in cleanup procedures following off-normal reactor operations. Specifically, the program is presently investigating how the properties of wastes containing ion-exchange media may be modified by heavy doses of irradiation from sorbed radionuclides. Special effort is being devoted towards quantifying the effects of factors such as radiation dose rate, chemical loading on the ion exchangers, moisture content and composition of external media, etc., which may influence the relation between laboratory test results and field performance. An extensive series of measurements has been initiated to investigate the effect of irradiation dose rate on radiation damage formation in IRN-77 resin. Samples are being irradiated at dose rates between approximately 1.7 x 10/sup 6/ and approximately 4 x 10/sup 4/ rad/h. Thus far, there is no evidence for a pronounced radiation-dose effect in the radiation-induced decomposition of (fully-swollen) IRN-77 resin. There is a substantial interaction between mild steel coupons and acidic species produced in the irradiation-induced decomposition of IRN-77 resin. For a given radiation dose, experiments at accelerated dose rates may tend to underestimate the net corrosion at low dose rates under field conditions. The corrosion behavior depends sensitively on resin loading - in some cases, long-term (or ''asymptotic'') corrosion rates may be much lower than initial rates. Substantial amounts of hydrogen gas can be generated in the corrosion of mild steel in IRN-77 resiin at the same time oxygen is unquestionably removed from the enviroment of irradiated resins. The scavenging does not rely on corrosion, and is quite effective at low dose rates and total doses. The O/sub 2/ scavenging may in part involve radiolytic conversion of O/sub 2/ and CO/sub 2/.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5135738
- Report Number(s):
- NUREG/CR-2516-Vol.1-No.4; BNL-NUREG-51499-Vol.1-No.4; ON: TI86000964
- Country of Publication:
- United States
- Language:
- English
Similar Records
Characterization of TMI-type wastes and solid products
Assessment of irradiation effects in radwaste containing organic ion-exchange media
Related Subjects
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ION EXCHANGE MATERIALS
RADIOLYSIS
STEELS
CORROSION
DOSE RATES
EXPERIMENTAL DATA
GAMMA RADIATION
HYDROGEN
RESEARCH PROGRAMS
RESINS
SULFURIC ACID
ALLOYS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
DATA
DECOMPOSITION
ELECTROMAGNETIC RADIATION
ELEMENTS
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
IONIZING RADIATIONS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
360605* - Materials- Radiation Effects
052002 - Nuclear Fuels- Waste Disposal & Storage