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:
cient, V is the volume of liquid in containment sump and sump overflow, and Vc is the containment building net free volume less Vs.c The maximum decontamination factor is 200 for elemental iodine. The effectiveness of the spray in removing elemental iodine shall be pre- sumed to end at that time, post-LOCA, when the maximum elemental iodine DF is reached. Because the removal mechanisms for organic iodides and particulate iodines are significantly different from and slower than that for elemental iodine, there is no need to limit the DF for organic iodides and particulate iodines. IV. EVALUATION FINDINGS The reviewer verifies that sufficient information has been provided by the applicant and that the review and calculations support conclusions of the following type, to be included in the staff's safety evaluation report: The concept upon which the proposed system is based has been demonstrated to be effective for fission product removal and retention under post- accident conditions. The proposed system design is an acceptable appli- cation of this concept. The system provides suitable redundancy in components and features so that its safety function can be accomplished assuming a single failure. The proposed preoperational tests, postoperational testing and surveil- lance, and proposed limiting conditions for operation of the spray system provide adequate assurance that the fission product scrubbing function of the containment spray system will meet or exceed the effectiveness assumed in the accident evaluation. 6.5.2-12 Rev. 2 - December 1988 The staff concludes that the containment spray system as a fission product cleanup system is acceptable and meets the requirements of General Design Criterion 41 with respect to the iodine removal function following a post- ulated loss-of-coolant accident, General Design Criterion 42 with respect to the capability for periodic inspection of the system, and General Design Criterion 43 with respect to the capability for periodic