ML20077L349

Ti 2515/194 Inspection Documentation Request

ML20077L349
Person / Time
Site:	Salem
Issue date:	03/20/2020
From:	NRC Region 1
To:
References
TI 2515/194
Download: ML20077L349 (3)

Text

TI 2515/194 Inspection Documentation Request Please provide the following documentation (Items 1 - 12) to the lead inspector identified below prior to the onsite inspection date, preferably no later than two weeks prior to onsite week.

Clinton Hobbs, Reactor Inspector RI/DRS/EB2 clinton.hobbs@nrc.gov

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

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

3. Copies of documentation or testing that demonstrates that detection circuits for the open phase condition, are sensitive enough to identify an open phase condition for all credited transformer loading conditions (i.e., high and low loading).

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

5. Copies of periodic maintenance, surveillance, setpoint calibration, and/or test procedures implemented or planned, for your OPC solution. Including the most recent completed copy.

6. Copies of your licensing basis changes to Updated Final Safety Analysis Report (UFSAR) and/or Technical Specifications (TS), 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.

7. Copies of any control room operating procedures that show the alarms, operator responses, and any manual actions taken by operators that would occur during an Open Phase Condition.

8. 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

9. 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.

10. Any self-assessments that have been performed on the Open Phase Detection system.

11. Any Open Phase Condition operating experience captured by the station in the corrective action system or in licensee event reports (LERs).

12. 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).

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

13. 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; bus transfer schemes; and maintenance and surveillance requirements.

This presentation should be a general overview of your system.

Please schedule the overview shortly after the entrance meeting.

14. 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.

15. If OPC actuation circuits are required, provide documentation that demonstrates continued coordination with the other protective devices in both the offsite electrical system and the onsite electrical systems.

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.