ELECTROCHEMICAL CORROSION TEST RESULTS FOR TANK 241-SY-102 SUPERNATE GRAB SAMPLES

DUNCAN JB

关键词: ARGON;    CARBON;    CARBON STEELS;    CHEMISTRY;    CORROSION;    ELECTROCHEMICAL CORROSION;    ELECTRODES;    MITIGATION;    STRESS CORROSION;    TANKS;    TESTING;   

DOI  :  10.2172/940014
RP-ID  :  RPP-RPT-27766 Rev 0
PID  :  OSTI ID: 940014
Others  :  TRN: US200823%%753

学科分类：材料科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

This report describes the electrochemical corrosion scans and conditions for testing of SY-102 supernatant samples taken December 2004. The testing was performed because the tank was under a Justification for Continued Operation allowing the supernatant composition to be outside the chemistry limits of Administrative Control 5.16, 'Corrosion Mitigation program'. A new electrochemical working electrode of A516 Grade 60 carbon steel was used for each scan; all scans were measured against a saturated calomel electrode, with carbon counter electrodes, and all scans were carried out at 50 C. The samples were scanned twice, once as received and once sparged with argon to deoxygenate the sample. For those scans conducted after argon purging, the corrosion rates ranged from 0.012 to 0.019 mpy. A test for stress corrosion cracking was carried out on one sample (2SY-04-07) with negative results.