Document: NUREG-0800
Document ID: 4571c66e-adba-49aa-a312-7e182788bd0d
Document Type: srp
Title: TECHNICAL SPECIFICATIONS AND EMERGENCY OPERATION REQUIREMENTS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070730455.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.14
CFR Part: 
CFR Title: 

Content:
e these actions. The environmental conditions likely to prevail during all potential flooding and low-water events, up to and including events of the severity of the controlling event, are reviewed to establish the minimum time available for implementation of emergency procedures. The physical parameters, such as the rate of rise or fall (of river or lake water levels), as 2.4.14-7 Revision 3 - March 2007 well as evaluation (based on experience and engineering judgment) of flood warning networks or drought forecasts, provide the staff with an independent estimate of available time. This data is provided to organizations responsible for the review of issues related to plant emergency procedures for their independent evaluation of the time required to implement shutdown and emergency protection measures. The environmental conditions likely during the controlling hydrological event should be such that the procedures can be carried out. It should be shown that all SSC important to safety exposed to the effects of the controlling hydrological events either have adequately designed hardened protection or that a set of adequate emergency actions and measures is available which can be implemented and completed within the available response time to ensure safety of these SSC. 3. Technical Specifications: An appropriate item in the plant Technical Specifications should be required in cases where emergency procedures are needed to ensure adequate protection. For those plants for which shutdown (if specified under Regulatory Guide 1.59 Position 2) and installation of protective measures are necessary in the event of a major flood, the procedures for carrying out these measures are reviewed by the organization responsible for the review of issues related to technical specifications for compatibility of available and required times, as established above. The Technical Specifications should reference an emergency plan which allows for the orderly installation of required