ML14322A926

NRR E-mail Capture - RAIs for Urgent LAR for Fort Calhoun SRs That Expire Before the Spring RFO

ML14322A926
Person / Time
Site:	Fort Calhoun
Issue date:	11/18/2014
From:	Lyon F Plant Licensing Branch IV
To:	Hansher B Omaha Public Power District
References
MF5143
Download: ML14322A926 (2)

Text

1 NRR-PMDAPEm Resource From:

Lyon, Fred Sent:

Tuesday, November 18, 2014 2:42 PM To:

bhansher@oppd.com; medwards@oppd.com

Subject:

RAIs for Urgent LAR for Fort Calhoun SRs that expire before the Spring RFO (TAC No.

MF5143)

Importance:

High Comment and RAIs from EICB:

Comment: The conclusion for the Manual Containment Isolation Actuation (TS 3.1, Table 3-2, Item 8.a, and 8.b) states: These valves perform no safety function in the open position, but do perform an active safety function in the closed position. This is a mischaracterization of the safety function performed by these valves.

The safety function is for the valves to reposition from open to shut upon loss of containment air pressure coincident with receipt of a containment isolation signal. The valve is required to be capable of performing this function even when it is in the open position so it is not accurate to state the valves perform no safety function when in the open position.

RAIs:

1. Test OI-ST-ESF-0013 is referenced as an alternate means of testing the manual containment Isolation actuation function, however the scope of this test is not provided in the LAR. Please provide a description of surveillance test OI-ST-ESF-0013 similar to the description provided for the OP-ST-ESF-0011 test on page 4 of the LAR.

2. For Steam Generator Level Calibrations (TS 3.1, Table 3-1, item 6.c; TS 3.1, Table 3-2 Item 23.c.1; TS3.1, Table 3-3A, Item 7.b and 8.b) it is understood that calibrations are performed in a split loop manor with in-containment instruments being calibrated separately from the out-of-containment loop components. While it is understandable that the in-containment instrument calibrations cannot be performed during plant power operation due to inability to isolate the sensing instruments; the out-of-containment portions of these loops would remain accessible. The LAR does not include a justification for extension of the out of containment loop component calibrations. Please provide a description of measures being taken by the licensee, if any, to perform calibrations of the accessible components of these loops. If these component calibrations are to be extended, then additional justification for doing so will be required.

Hearing Identifier:

NRR_PMDA Email Number:

1696 Mail Envelope Properties (Fred.Lyon@nrc.gov20141118144200)

Subject:

RAIs for Urgent LAR for Fort Calhoun SRs that expire before the Spring RFO (TAC No. MF5143)

Sent Date:

11/18/2014 2:42:03 PM Received Date:

11/18/2014 2:42:00 PM From:

Lyon, Fred Created By:

Fred.Lyon@nrc.gov Recipients:

"bhansher@oppd.com" <bhansher@oppd.com>

Tracking Status: None "medwards@oppd.com" <medwards@oppd.com>

Tracking Status: None Post Office:

Files Size Date & Time MESSAGE 2044 11/18/2014 2:42:00 PM Options Priority:

High Return Notification:

No Reply Requested:

No Sensitivity:

Normal Expiration Date:

Recipients Received: