ML20084J945

Ti 2515/194 Inspection Documentation Request

ML20084J945
Person / Time
Site:	Millstone
Issue date:	03/24/2020
From:	NRC Region 1
To:
Dentel G
References
IR 2020010
Download: ML20084J945 (3)

Text

ML20084J945 TI 2515/194 Inspection Documentation Request Please provide the following documentation (Items 1 - 8) to the lead inspector prior to the onsite inspection date, preferably no later than two weeks prior to onsite week. Whenever practical, please provide copies electronically. Please provide an index of the requested documents which includes a brief description of the document and the numerical heading associated with the request (i.e., where it can be found in the list of documents requested).

Louis Dumont, Reactor Inspector RI/DRS/EB2 louis.dumont@nrc.gov

1. Copies of any calculations, analyses, and/or test reports performed to support the implementation of your open phase condition (OPC) solution. If, in your implementation, OPCs are not detected and alarmed in the control room please include documentation that:

a. Demonstrates the OPC will not prevent functioning of important-to-safety SSCs; AND

b. Detection of an OPC will occur within a short period of time (e.g., 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />).

2. Copies of any modification packages, including 10 CFR 50.59 evaluations if performed, used for or planned for the implementation of your OPC solution.

3. Copies of periodic maintenance and surveillance test, setpoint calibration, alarm response procedures, and/or test procedures implemented or planned, for your OPC solution.

Including the most recent completed copy.

4. Copies of your licensing basis changes to Updated Final Safety Analysis Report (UFSAR) and/or Technical Specifications (TS), or equivalent, as applicable, which discuss the design features and analyses related to the effects of, and protection for, any open phase condition design vulnerability. If these documents have not been updated, provide documentation of your plans to do so.

5. Copies of any procurement specifications and acceptance testing documents related to the installation of your OPC solution.

6. Copies of any site training the inspector will need to accomplish to gain access to areas with, or planned, major electrical equipment used in your OPC solution (i.e. switchyard).

7. Provide documentation showing that with an OPC occurrence and no accident condition signal present, either:

a. An OPC does not adversely affect the function of important-to-safety SSCs, OR

b. TS LCOs are maintained or the TS actions are met without entry into TS LCO 3.0.3 AND

i. Important-to-safety equipment is not damaged by the OPC, AND ii. Shutdown safety is not compromised

8. With OPC occurrence and an accident condition signal present:

a. Provide documentation showing that automatic detection and actuation will transfer loads required to mitigate postulated accidents to an alternate source and ensure that safety functions are preserved, as required by the current licensing bases, OR

b. Provide documentation showing that all design basis accident acceptance criteria are met with the OPC, given other plant design features. Accident assumptions must include licensing provisions associated with single failures. Typically, licensing bases will not permit consideration of the OPC as the single failure since this failure is a non-safety system.

Please provide the following documentation to the inspector when onsite. Whenever practical, please provide copies electronically, except for drawings. Drawings should be provided as paper copies of sufficient size (ANSI C or D) such that all details are legible.

9. A brief presentation describing your electric power system design and typical electrical transmission and distribution system alignments; OPC design schemes installed to detect, alarm and actuate (if applicable); bus transfer schemes; and maintenance and surveillance requirements; operator walkthrough verifications of the OPC alarm response procedures; consequences of extended duration of unbalanced voltage conditions affecting electric equipment, if OPC is not automatically isolated; and licensing basis changes to Updated Final Safety Analysis Report (UFSAR) and Technical Specifications (TS).

10. This presentation should be a general overview of your system. Please schedule the overview shortly after the entrance meeting.

11. Plant layout and equipment drawings for areas that identify: (a) the physical plant locations of major electrical equipment used in your open phase condition solution; (b) the locations of detection and indication equipment used in the open phase condition sensing circuits.

12. If OPC actuation circuits are required, provide documentation that demonstrates continued coordination with the other protective devices in both the offsite electrical system (within Indian Points area of responsibility) and the onsite electrical systems.

13. Access to locations in which open phase condition equipment is installed or planned (i.e.

switchyard, etc.)

14. Copies of documentation or testing that demonstrates your OPC solution minimizes spurious actuation or misoperation in the range of voltage imbalance normally expected in the transmission system that could cause undesired separation from an operable off-site power source.

15. A simulator demonstration, that replicates an open phase condition scenario, on possibly one Unit, which demonstrates how the site would detect an OPC and react, and subsequently return into normal operation state (including fast transfer of ESF buses.)

This document does not contain new or amended information collection requirements subject to the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information collection requirements were approved by the Office of Management and Budget, Control Number 31500011. The NRC may not conduct or sponsor, and a person is not required to respond to, a request for information or an information collection requirement unless the requesting document displays a currently valid Office of Management and Budget control number.

This document will be made available for public inspection and copying at http://www.nrc.gov/reading-rm/adams.html and at the NRC Public document Room in accordance with 10 CFR 2.390, Public Inspections, Exemptions, Requests for Withholding.