Document: NUREG-0800
Document ID: 5cb19e99-a561-4571-92e5-2933a6181985
Document Type: srp
Title: CONTAINMENT SPRAY AS A FISSION'PRODUCT CLEANUP SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340761.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.5.2
CFR Part: 
CFR Title: 

Content:
he judgment of which areas need to be given attention and emphasis in the review is based on a determination .of whether the material presented is similar to that recently reviewed on other plants and whether items of special safety significance are involved. The reviewer determines whether the containment spray system is used for fission product removal purposes. SAR Chapter 15 should be reviewed to establish whether a fission product removal function for the containment spray system is assumed in accident dose evaluations. If the containment spray system is not used for miti- gating radiological consequences, no further review is required under this SRP section. If the containment spray system is used for mitigation of radiological doses, then the review of the fission product removal function of the containment spray system follows the procedure outlined below. 1. System Design Review of the system design includes an examination of the components and design features necessary to carry out the fission product scrubbing func- tion, including: a. Spray Solution Chemistry The forms of iodine for which spray removal credit is claimed in the accident analyses (SAR Chapter 15) are established. Containment spray systems may be designed for removal of iodine in the elemental form, in the form of organic compounds, and in the particulate form. Spray removal credit for other particulate fission products is also established. The systems or subsystems required to carry out the fission product scrubbing function of the containment spray are identified, such as the spray system, recirculation system, spray additive system, and water source. The design of the systems involved is reviewed in order to: (1) Ascertain the effectiveness of any chemical additive for iodine removal and retention. (2) Ascertain that the amount of additive is sufficient to meet the acceptance criteria of subsection II or that adequate justifica- tion is supplied for the iodine removal and retention