May-June 2018 NPJ

36 NuclearPlantJournal.com Nuclear Plant Journal, May-June 2018 Radiation Source... ( Continued from page 35) Al Jarvis Al Jarvis has 38 years’ experience in the nuclear industry. In 16 years with Structural Integrity/Finetech (Finetech was acquired by Structural Integrity in 2015), his main responsibilities include a variety of utility-direct and EPRI projects, assessments and conceptual designs related to water chemistry (for both BWR and PWRs), source term (for both BWRs and PWRs), condensate polishing, reactor water cleanup, radwaste processing, and makeup water. Al participates in EPRI BWRVIP Mitigation, Chemistry Technical Strategy Groups and Radiation Management committees. He is the technical lead in the preparation of BWR startup and shutdown guidance, and was the main author of BWRVIP-225 Revision 1: BWR Shutdown and Startup Chemistry Experience and Application Sourcebook, which is the definitive document for startup and shutdown chemistry optimization used by U.S. and international plants. Many of his assessment projects involve BWR operating cycle, shutdown and startup chemistry control, including the impacts on IGSCC mitigation, fuel reliability and radiation field control. He has a Bachelor of Science - Chemical Engineering from Clarkson University. Radiation Source Term Assessment For many years, SI’s Nuclear Chemistry and Materials Group performed radiation source term assessments for BWRs. These projects have either been contracted directly through a utility or for a utility through the EPRI Radiation Management and Source Term Technical Strategy Group (RM&ST TSG). SI’s BWR expertise in this area led to EPRI RM&TSG contracts for performing source term assessments at two PWRs in 2016-2017. A typical work scope for each source term assessment includes reviews of operational and shutdown chemistry data, radiological data, water treatment equipment performance, outage schedule and water management plans, and 5-year As Low as Reasonably Achievable (ALARA) and cobalt reduction plans. In the assessment process, data reviews are completed and documented in a draft report followed by a site visit to discuss initial findings from the data reviews and to fill in data gaps. A preliminary list of findings are typically reviewed with senior management at the end of the site visit. The final report is issued after the site visit. Thefindingsfrom a radiation source term assessment will help plants identify specific actions to reduce the radiological source term and collective radiation exposure. This can include evaluating the effectiveness of chemical injection programs, such as BWR and PWR zinc injection, and BWR hydrogen water chemistry programs. Elemental cobalt source term reduction programs can be reviewed for effectiveness. Methods to optimize the operational and shutdown water treatment and chemistry control programs can be identified. Contact Jen Jarvis or Al Jarvis, Structural Integrity Associates, telephone: (877) 474-76937, email: jjarvis@structint.com or ajarvis@ structint.com.