b'Project Description: times up to 7000 seconds. The PQD The objective of this project is tostudy is performed with coated and develop data that establishes ARMORsuncoated cladding samples, which high temperature oxidation (HTO) andincludes (1) steam oxidation at 1000 post quench ductility (PQD) behaviorand 1200C and then followed by relative to the uncoated condition. water quench at 800C; (2) ring This data will be used as design inputcompression testing (RCT) with the for establishing NRC LOCA licensingoxidized samples at elevated tempera-basis for ARMOR coated fuel rods.ture.Oxidation times for PQD testing The objective is met by comparison ofis guided by Cathcart- Pawel (CP) weight gain and offset strain of coatedformulation for 2-sided Equivalent and uncoated samples and will helpCladding Reacted (ECR) of 13%, 17%, to demonstrate that ARMOR doesand 23%. For coated coupons, coating no harm while also highlighting itsis applied to all surfaces including oxidation benefits in LOCA. The HTOedges. For the cladding PQD tests, and PQD data will also be used as inputthe inner surface will not be coated to the future Licensing Topical Reportand will be exposed to steam during (LTR) that will be submitted to thetesting. The ductility of steam oxidized NRC to demonstrate that the LOCAcladding samples will be determined performance of ARMOR is equivalentby RCT.Thermogravimetric Analysis to or better than uncoated Zircaloy-2. (TGA) scoping tests are conducted to The HTO testing with coated andinform and select the test times that uncoated coupons will be conductedwill establish the HTO weight gain vs. to determine the weight gain vs. timetime kinetics tests.trends at 800 to 1400C for equivalent 2019|AFC ACCOMPLISHMENTS 75'