ML16099A012

NRR E-mail Capture - Acceptance Review - License Amendment Request to Revise Technical Specification (TS) 3.4.12, Low Temperature Overpressure Protection (LTOP) System - CAC Nos. MF7501 and MF7502)

ML16099A012
Person / Time
Site:	Diablo Canyon
Issue date:	04/07/2016
From:	Balwant Singal Plant Licensing Branch IV
To:	Richardson M Pacific Gas & Electric Co
References
MF7501, MF7502
Download: ML16099A012 (2)

Text

NRR-PMDAPEm Resource From: Singal, Balwant Sent: Thursday, April 07, 2016 3:12 PM To: Richardson, Michael

Subject:

Acceptance Review - License Amendment Request to Revise Technical Specification (TS) 3.4.12, "Low Temperature Overpressure Protection (LTOP) System" - CAC Nos.

MF7501 and MF7502)

By letter dated March 23, 2016 (Agencywide Documents Access and Management System (ADAMS)

Accession No. ML16084A588), Pacific Gas and Electric Company, submitted a license amendment request for Diablo Canyon Power Plant, Units 1 and 2, for revision to TS 3.4.12, Low Temperature Overpressure Protection (LTOP) System. The proposed amendment would revise TS 3.4.12 to reflect the mass input transient analysis that assumes an emergency core cooling system centrifugal charging pump and the normal charging pump capable of simultaneously injecting into the reactor coolant system during TS 3.4.12 applicability.

The purpose of this e-mail is to provide the results of the U.S. Nuclear Regulatory Commission (NRC) staffs acceptance review of this amendment request. The acceptance review was performed to determine if there is sufficient technical information in scope and depth to allow the NRC staff to complete its detailed technical review. The acceptance review is also intended to identify whether the application has any readily apparent information insufficiencies in its characterization of the regulatory requirements or the licensing basis of the plant.

Consistent with Section 50.90 of Title 10 of the Code of Federal Regulations (10 CFR), an amendment to the license (including the TSs) must fully describe the changes requested, and following as far as applicable, the form prescribed for original applications. Section 50.34 of 10 CFR addresses the content of technical information required. This section stipulates that the submittal address the design and operating characteristics, unusual or novel design features, and principal safety considerations.

The NRC staff has reviewed your application and concluded that it does provide technical information in sufficient detail to enable the staff to proceed with its detailed technical review and make an independent assessment regarding the acceptability of the proposed amendment in terms of regulatory requirements and the protection of public health and safety and the environment. If additional information is needed for the staff to complete its technical review, you will be advised by separate correspondence.

If you have any questions, please contact me at (301) 415-3016.

Balwant K. Singal Senior Project Manager (Diablo Canyon)

Nuclear Regulatory Commission Division of Operating Reactor Licensing Balwant.Singal@nrc.gov Tel: (301) 415-3016 Fax: (301) 415-1222 1

Hearing Identifier: NRR_PMDA Email Number: 2763 Mail Envelope Properties (Balwant.Singal@nrc.gov20160407151200)

Subject:

Acceptance Review - License Amendment Request to Revise Technical Specification (TS) 3.4.12, "Low Temperature Overpressure Protection (LTOP) System" - CAC Nos.

MF7501 and MF7502)

Sent Date: 4/7/2016 3:12:05 PM Received Date: 4/7/2016 3:12:00 PM From: Singal, Balwant Created By: Balwant.Singal@nrc.gov Recipients:

"Richardson, Michael" <MJRm@pge.com>

Tracking Status: None Post Office:

Files Size Date & Time MESSAGE 2482 4/7/2016 3:12:00 PM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received:

NRR-PMDAPEm Resource From: Singal, Balwant Sent: Thursday, April 07, 2016 3:12 PM To: Richardson, Michael

Subject:

Acceptance Review - License Amendment Request to Revise Technical Specification (TS) 3.4.12, "Low Temperature Overpressure Protection (LTOP) System" - CAC Nos.

MF7501 and MF7502)

By letter dated March 23, 2016 (Agencywide Documents Access and Management System (ADAMS)

Accession No. ML16084A588), Pacific Gas and Electric Company, submitted a license amendment request for Diablo Canyon Power Plant, Units 1 and 2, for revision to TS 3.4.12, Low Temperature Overpressure Protection (LTOP) System. The proposed amendment would revise TS 3.4.12 to reflect the mass input transient analysis that assumes an emergency core cooling system centrifugal charging pump and the normal charging pump capable of simultaneously injecting into the reactor coolant system during TS 3.4.12 applicability.

The purpose of this e-mail is to provide the results of the U.S. Nuclear Regulatory Commission (NRC) staffs acceptance review of this amendment request. The acceptance review was performed to determine if there is sufficient technical information in scope and depth to allow the NRC staff to complete its detailed technical review. The acceptance review is also intended to identify whether the application has any readily apparent information insufficiencies in its characterization of the regulatory requirements or the licensing basis of the plant.

Consistent with Section 50.90 of Title 10 of the Code of Federal Regulations (10 CFR), an amendment to the license (including the TSs) must fully describe the changes requested, and following as far as applicable, the form prescribed for original applications. Section 50.34 of 10 CFR addresses the content of technical information required. This section stipulates that the submittal address the design and operating characteristics, unusual or novel design features, and principal safety considerations.

The NRC staff has reviewed your application and concluded that it does provide technical information in sufficient detail to enable the staff to proceed with its detailed technical review and make an independent assessment regarding the acceptability of the proposed amendment in terms of regulatory requirements and the protection of public health and safety and the environment. If additional information is needed for the staff to complete its technical review, you will be advised by separate correspondence.

If you have any questions, please contact me at (301) 415-3016.

Balwant K. Singal Senior Project Manager (Diablo Canyon)

Nuclear Regulatory Commission Division of Operating Reactor Licensing Balwant.Singal@nrc.gov Tel: (301) 415-3016 Fax: (301) 415-1222 1

Hearing Identifier: NRR_PMDA Email Number: 2763 Mail Envelope Properties (Balwant.Singal@nrc.gov20160407151200)

Subject:

Acceptance Review - License Amendment Request to Revise Technical Specification (TS) 3.4.12, "Low Temperature Overpressure Protection (LTOP) System" - CAC Nos.

MF7501 and MF7502)

Sent Date: 4/7/2016 3:12:05 PM Received Date: 4/7/2016 3:12:00 PM From: Singal, Balwant Created By: Balwant.Singal@nrc.gov Recipients:

"Richardson, Michael" <MJRm@pge.com>

Tracking Status: None Post Office:

Files Size Date & Time MESSAGE 2482 4/7/2016 3:12:00 PM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received: