Document: NUREG-1555
Document ID: b5d0daf9-9138-4935-a8fb-b1fed4498171
Document Type: esrp
Title: DISCHARGE SYSTEM
Source: NUREG-1555
Source URL: https://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1555/initial/
Revision Date: 2007-10
Chapter: 5
Section ID: 5.3.2
CFR Part: 
CFR Title: 

Content:
water bodies (e.g., rivers, lakes) or in onsite cooling ponds. Some nuisance conditions may be created by operation of cooling ponds that may not affect receiving water body biota, but that may affect the aesthetic quality of the site and vicinity. The reviewer should consider such factors (e.g., odors from algal or macrophyte growth and decomposition) in making this evaluation. There should be careful evaluation of all factors contributing to nuisance growths at any site before establishment of thermal limits based upon this response, and temperature limits should be set in conjunction with restrictions on certain other factors (e.g., eutrophication). October 1999 5.3.2.2-9 NUREG-1555 Chemical Effects The reviewer should consider species in the vicinity of the station and their susceptibility to chemicals released. (1) Consider the following parameters: ` acute toxicity ` chronic toxicity ` accumulation ` biomagnification ` sublethal and behavioral effects. (2) Determine if applicant needs to perform bioassays for important chemicals such as copper, chlorine, or related components, and scale inhibitors based on site-specific conditions. (3) Compare the concentrations of chemicals at the discharge points with concentrations of the same chemicals in ambient waters. ` Consider dilution and mixing of chemical discharges. ` Obtain estimates of concentrations at various distances from the release point. ` Assess the effects of variable environmental and plant operation conditions on injury or mortality of suspectable organisms. ` Determine the potential for bioconcentration, biomagnification, and interacting effects for certain chemicals. (4) Determine the biological losses from chemical stress based upon ` plume configuration ` time and concentration ` worst and average conditions. (5) Determine if losses of either resident or migratory species will occur given proposed specifications for chemical releases. (6) Evaluations of chemical impacts should address the