Document: NUREG-0800
Document ID: 2df7cc71-18c8-408a-a8b1-e2b0def18569
Document Type: srp
Title: and 6.2.1.1.B.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340767.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.1
CFR Part: 
CFR Title: 

Content:
tance criteria of the engineered safety feature atmosphere cleanup systems in SRP Section 6.5.1 should still be met. III. REVIEW PROCEDURES The reviewer selects and emphasizes specific aspects of this SRP section as are appropriate for a particular plant. The judgment on 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 first step in the review of the fission product removal function of the ice condenser system is to determine whether the ice condenser system is used for mitigating radiological consequences. Based on the information in Chapter 15 of the SAR, the reviewer determines whether a dose reduction credit was assumed for the ice condenser. If no fission product removal credit is assumed in the accident analysis, no further review is required under this SRP section. If the ice condenser system is used for iodine removal, the iodine removal effectiveness of the ice condenser system is reviewed. The review includes the following: 1. System Design and Evaluation a. Chemical Additive To achieve long-term iodine retention, chemical compounds are usually added to the ice for adjusting the pH of the post-accident recirculating fluid when the ice melt is diluted and mixed with the containment sump solution, primary coolant, emergency core cooling system water, and containment spray solution, if any. 6.5.4-3 Rev. 3 - December 1988 Long-term retention of iodine may be assumed only when the recirculating fluid meets the pH range specified in the accept- ance criteria of this SRP section. For ice condenser systems similar to those of the D. C. Cook and Sequoyah plants (with a steady-state flow rate of approximately 40,000 cfm), an effi- ciency of 30% per pass for elemental iodine is assigned. The system is considered ineffective for organic iodide and parti- culate iodine