ML15029A050

Requests for Additional Information (Rais) for License Amendment Request to Delete Condensate Storage Tank as an Alternate Source of Make-up Water

ML15029A050
Person / Time
Site:	Cooper
Issue date:	01/29/2015
From:	Siva Lingam Plant Licensing Branch IV
To:	Shaw J Nebraska Public Power District (NPPD)
References
TAC MF4716
Download: ML15029A050 (2)

Text

NRR-PMDAPEm Resource From: Lingam, Siva Sent: Thursday, January 29, 2015 7:41 AM To: jdshaw@nppd.com Cc: Oesterle, Eric; Mitchell, Eliza; Sweat, Tarico

Subject:

Cooper Nuclear Station - Requests for Additional Information (RAIs) for License Amendment Request to Delete Condensate Storage Tank as an Alternate Source of Make-up Water (TAC No. MF4716)

Please note the following official RAIs and provide your responses within 30 days from the date of this e-mail.

By letter dated August 26, 2014, Nebraska Public Power District (NPPD), the licensee, requested a change to revise the Cooper Nuclear Station (CNS) Technical Specifications (TS) and TS bases. The proposed amendment would delete Option b from TS Surveillance Requirement (SR) 3.5.2.1 and its associated Bases.

Option b of the CNS TS and TS Bases allows the use of Condensate Storage Tank (CST) A as an alternative source of makeup water to the Reactor Pressure Vessel during MODE 4 and MODE 5. With the suppression pool water level less than the required limit (< 12 feet, 7 inches), all Emergency Core Cooling Systems (ECCS) injection or spray subsystems are inoperable unless aligned to the OPERABLE CST A. The proposed amendment will delete Option b from TS SR 3.5.2.1 and its associated bases.

Issue:

With the removal of the CST as an alternate source of makeup water to the Reactor Pressure Vessel, a new alternate source of makeup water was not identified. Also, justification for not having an alternate source of water to ECCS was not provided.

SBPB RAI:

1. If CST A is deleted as an alternate source of water, how will make up water be provided to the Reactor Pressure Vessel if the ECCS is inoperable as a result of suppression pool water level below the required limit?

2. Provide justification for not having an alternate source of water once the suppression pool is less than the required limit, making ECCS inoperable.

Siva P. Lingam U.S. Nuclear Regulatory Commission Project Manager (NRR/DORL/LPL4-1)

Cooper Nuclear Station Diablo Canyon Nuclear Power Plant Location: O8-D5; Mail Stop: O8-B3 Telephone: 301-415-1564; Fax: 301-415-1222 E-mail address: siva.lingam@nrc.gov 1

Hearing Identifier: NRR_PMDA Email Number: 1837 Mail Envelope Properties (Siva.Lingam@nrc.gov20150129074100)

Subject:

Cooper Nuclear Station - Requests for Additional Information (RAIs) for License Amendment Request to Delete Condensate Storage Tank as an Alternate Source of Make-up Water (TAC No. MF4716)

Sent Date: 1/29/2015 7:41:09 AM Received Date: 1/29/2015 7:41:00 AM From: Lingam, Siva Created By: Siva.Lingam@nrc.gov Recipients:

"Oesterle, Eric" <Eric.Oesterle@nrc.gov>

Tracking Status: None "Mitchell, Eliza" <Eliza.Mitchell@nrc.gov>

Tracking Status: None "Sweat, Tarico" <Tarico.Sweat@nrc.gov>

Tracking Status: None "jdshaw@nppd.com" <jdshaw@nppd.com>

Tracking Status: None Post Office:

Files Size Date & Time MESSAGE 1922 1/29/2015 7:41:00 AM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received: