Document: NUREG-0800
Document ID: 91fee075-c567-438d-bf9f-47be3177b457
Document Type: srp
Title: ENGINEERED SAFETY FEATURES MATERIALS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070453.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.1.1
CFR Part: 
CFR Title: 

Content:
es the methods of storing the ESF fluids to determine whether deterioration will occur either by chemical instability or by corrosive attack on the storage vessel. The reviewer determines what effects such deterioration could have on the compatibility of these ESF coolants with both the ESF materials of construction and the other materials within the containment. CMEBThe reviewer further verifies that hydrogen release due to corrosion of 92 metals by emergency core cooling and containment spray solutions is controlled in accordance with Regulatory Guide 1.7, position C.6.93 The reviewer also compares the assigned corrosion rates of materials in containment, as stated in the SAR, with standard corrosion rate data. In accordance with the procedures in SRP Section 6.5.82, the reviewer examines 94 the paths that the solutions would follow in the containment from sprays and emergency core cooling systems to the sump, for both injection and recirculation phases to verify that no areas accumulate very high or low pH solutions and that any assumptions regarding pH in the modeling of containment spray fission product removal are valid. 6.1.1-15 DRAFT Rev. 2 - April 1996 b. Boiling Water Reactors (BWRs) The reviewer verifies that the chemistry of the water used for the emergency core cooling systems and the containment spray systems is controlled to the limits given in subsection II.B.12.b. The reviewer further verifies that hydrogen 95 release is controlled in accordance with Regulatory Guide 1.7. The reviewer also compares the assumed corrosion rates of materials in containment with standard corrosion rate data. Where appropriate for the ESF fluid under consideration, the reviewer considers the guidelines identified as acceptable for reactor coolant in SRP Section 5.4.8.96 2. Compatibility with Other Process Fluids The reviewer considers the composition of other process fluids to which ESF materials may be routinely exposed and the environmental conditions of exposure