Cesium chloride compatibility testing program: Annual report for fiscal year 1986

Technical Report · Fri May 01 04:00:00 EDT 1987

DOI:https://doi.org/10.2172/6529558· OSTI ID:6529558

Bryan, G H

A program was started to evaluate the compatibility of Waste Encapsulation and Storage Facility (WESF)-produced cesium chloride (CsCl) with 316L stainless steel (SS) under thermal conditions that may be encountered in a geologic repository. Objective is compatibility testing of six standard WESF capsules at a max metal/CsCl interface temperature of approx.450/sup 0/C. Test capsule No. C-1351 was removed from its insulated container after being held at temperature for 28,268 h (3.2 y). The average max interface temperature for the 3.2-y capsule was 445/sup 0/C. Metal corrosion in the 3.2-y capsule was extensive throughout the capsule, except in the upper portion of the capsule where the interface temperature was below 400/sup 0/C. The maximum corrosion found was 460 ..mu..m (0.018 in.). Overall corrosion in the hotter portion of the 3.2-y capsule increased linearly with time. Intergranular attack was much more apparent in the tests of longer duration, while pitting and a general surface attack appeared to predominate in the shorter tests. In the area where the temperature was below 400/sup 0/C, the attack was greatly reduced. Results indicate that in the hotter portion of the capsule (where the metal/CsCl interface temperature is above 400/sup 0/C the corrosion is proceeding at a linear rate. If metal corrosion at the higher temperatures proceeds at a linear rate for an extended period of time, it has serious implications for the geologic disposal of the WESF CsCl capsules. Estimates of long-term metal attack in a geological repository are discussed.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6529558
• Report Number(s): PNL-6170; ON: DE87011232
• Country of Publication: United States
• Language: English

Related Subjects

052002* -- Nuclear Fuels-- Waste Disposal & Storage
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALKALI METAL COMPOUNDS
ALKALI METAL ISOTOPES
ALLOYS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CESIUM 137
CESIUM CHLORIDES
CESIUM COMPOUNDS
CESIUM ISOTOPES
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CHROMIUM ALLOYS
COMPATIBILITY
CORROSION
CORROSION RESISTANT ALLOYS
ENCAPSULATION
HALIDES
HALOGEN COMPOUNDS
HIGH TEMPERATURE
IRON ALLOYS
IRON BASE ALLOYS
ISOTOPES
MANAGEMENT
MATERIALS TESTING
NUCLEI
ODD-EVEN NUCLEI
RADIOACTIVE WASTE DISPOSAL
RADIOISOTOPES
STAINLESS STEEL-316L
STAINLESS STEELS
STEELS
TESTING
WASTE DISPOSAL
WASTE MANAGEMENT
YEARS LIVING RADIOISOTOPES