ML18115A490

2018/04/25 Nuscale SMR DC RAI - Request for Additional Information No. 435 Erai No. 9434 (13.05.02.01)

ML18115A490
Person / Time
Site:	NuScale
Issue date:	04/25/2018
From:	NRC
To:	NRC/NRO/DNRL/LB1
References
Download: ML18115A490 (5)

Text

Code of Federal RegulationsThe scope of the program shall include emergency procedures, ... "0737, "Clarification of TMI Action Plan Requirements," and NUREG737, Supplement 1, "Requirements for Emergency Response Capability," which"Operating and Emergency Operating Procedures." 57216, "NuScale Generic Technical Guidelines," for docketing.The NuScale GTGs are "symptombased" procedural guidelines that allow the operator to generic guidelines include "eventbased" descriptions; i.e., events based on the Transient and Chapter 15, the "symptombased" approach allows for mitigating strategies to be effective with Section 4.3, "Structure and Use," of the NuScale GTGs states:"The guidance is arranged in a flowchart format and is intended to be implemented in a similar manner when finalized as a procedure. The flowchart consists of a series of decision points that culminate in either a list of operator actions or displays a status that no action is needed. The flowcharts are to be implemented in one of three ways (in order of preference): 1. Electronically through the human-system interface (HSI) 2. Manually through a user interface that asks the decision point questions andprovides the appropriate procedure 3. Manually by using the paper version of the flowchart"ooooncurrent "red" path condition (i.e., CSF not met) existed on two or o oonecessary), when the manual Operator Action(s) taken to address a "red" path CSF flowcharts to specifically address the staff's concerns listed as Items 1make the necessary changes to incorporate these strategies into Section 4.3, "StrucUse," of technical report TR