ML15218A201
| ML15218A201 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 06/18/2015 |
| From: | Higgins F Exelon Corp |
| To: | Nicholas Difrancesco Japan Lessons-Learned Division |
| References | |
| Download: ML15218A201 (30) | |
Text
NRR-PMDAPEm Resource From: Higgins,Frank:(GenCo-Nuc) [frank.higgins@exeloncorp.com]
Sent: Thursday, June 18, 2015 10:29 AM To: DiFrancesco, Nicholas; Wyman, Stephen Cc: Clark, Jeffrey S.:(GenCo-Nuc); Merritt, Chuck:(GenCo-Nuc); Waiters,Sheldon:(GenCo-Nuc)
Subject:
NRC ESEP questions - Calvert Cliffs Attachment 1 - Email 1 Attachments: Attachment 1 ESEP Unit 1 Containment Walkdown.pdf On behalf of Jeff Clark I am forwarding the Calvert Attachments.
Due to size limitations I split the PDF into two pdfs -one per unit. I will be sending attachments in separate emails. contains Executive summary and Unit 1 Containment walkdown photos. Email 1 A contains Unit 2 Containment walkdown photos Email 2 Please confirm receipt of these pdfs as it completes our response to the ESEP questions.
Thank You Frank Higgins Fukushima Seismic and Flooding Lead Calvert Cliffs Frank.higgins@exeloncorp.com 5743602413 C 4104952372 W Mr. DiFrancesco/Mr. Wyman, In response to your email below, Exelon is pleased to provide you with the attached responses to your questions requested by June 19, 2015. Please feel free to contact us with any further questions or clarifications needed to support the NRCs ESEP report reviews.
Thank You, Jeff Clark Re-Sending as separate word & pdf files (previously pdf embedded in Word file).
Please confirm receipt.
- Thanks, Jeff This Email message and any attachment may contain information that is proprietary, legally privileged, confidential and/or subject to copyright belonging to Exelon Corporation or its affiliates ("Exelon"). This Email is intended solely for the use of the person(s) to which it is addressed. If you are not an intended recipient, or the 1
employee or agent responsible for delivery of this Email to the intended recipient(s), you are hereby notified that any dissemination, distribution or copying of this Email is strictly prohibited. If you have received this message in error, please immediately notify the sender and permanently delete this Email and any copies.
Exelon policies expressly prohibit employees from making defamatory or offensive statements and infringing any copyright or any other legal right by Email communication. Exelon will not accept any liability in respect of such communications. -EXCIP 2
Hearing Identifier: NRR_PMDA Email Number: 2276 Mail Envelope Properties (1EDF2730CFBC9D409EAE618A6C5D625F5C87A18C)
Subject:
NRC ESEP questions - Calvert Cliffs Attachment 1 - Email 1 Sent Date: 6/18/2015 10:28:48 AM Received Date: 6/18/2015 10:29:25 AM From: Higgins,Frank:(GenCo-Nuc)
Created By: frank.higgins@exeloncorp.com Recipients:
"Clark, Jeffrey S.:(GenCo-Nuc)" <Jeffrey.Clark2@exeloncorp.com>
Tracking Status: None "Merritt, Chuck:(GenCo-Nuc)" <chuck.merritt@exeloncorp.com>
Tracking Status: None "Waiters,Sheldon:(GenCo-Nuc)" <sheldon.waiters@exeloncorp.com>
Tracking Status: None "DiFrancesco, Nicholas" <Nicholas.DiFrancesco@nrc.gov>
Tracking Status: None "Wyman, Stephen" <Stephen.Wyman@nrc.gov>
Tracking Status: None Post Office: exchm-omf-22.exelonds.com Files Size Date & Time MESSAGE 2073 6/18/2015 10:29:25 AM ESEP Unit 1 Containment Walkdown.pdf 4407989 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:
Recipients Received:
CALVERT CLIFFS NUCLEAR POWER PLANT Calvert Cliffs Response to NRC ESEP Report Questions -
Attachment 1 Containment Walkdown Photographs - Unit 1
Contents Executive Summary ................................................................................................................................... 2 UNIT 1 ........................................................................................................................................................... 3 Equipment ID No: 1LT-103 ........................................................................................................................ 3 Equipment ID No: 1LT-110X ...................................................................................................................... 4 Equipment ID No: 1LT-110Y ...................................................................................................................... 5 Equipment ID No: 1PT-105A...................................................................................................................... 6 Equipment ID No: 1LT-1124A .................................................................................................................... 7 Equipment ID No: 1PT-1013A ................................................................................................................... 8 Equipment ID No: 1PT-1023A ................................................................................................................... 9 Equipment ID No: 1TE-5309 .................................................................................................................... 10 Equipment ID No: SIT Tank 11 A ............................................................................................................. 11 Equipment ID No: 1LT-321 ...................................................................................................................... 12 Equipment ID No: 1PT-321 ...................................................................................................................... 13 Equipment ID No: SIT Tank 11 B.............................................................................................................. 14 Equipment ID No: 1LT-311 ...................................................................................................................... 15 Equipment ID No: 1PT-311 ...................................................................................................................... 16 Equipment ID No: SIT Tank 12A .............................................................................................................. 17 Equipment ID No: 1LT-341 ...................................................................................................................... 18 Equipment ID No: 1PT-341 ...................................................................................................................... 19 Equipment ID No: SIT Tank 12B............................................................................................................... 20 Equipment ID No: 1LT-331 ...................................................................................................................... 21 Equipment ID No: 1PT-331 ...................................................................................................................... 22 Equipment ID No: SIT Tank Discharge Valves Unit 1 - Unit 2 has the same configuration .................... 23 Equipment ID No: SIT Tank Discharge Valves Unit 1 - Unit 2 has the same configuration .................... 24 Equipment ID No: SIT Tank Discharge Valves Unit 1 - Unit 2 has the same configuration .................... 25 Equipment ID No: SIT Tank Discharge Valves Unit 1 - Unit 2 has the same configuration .................... 26 Page 1
Executive Summary The purpose of this report is to document the Unit 1 and 2 Containment walkdowns performed at Calvert Cliffs to provide photographs of the installed configurations of equipment listed on the Expedited Seismic Evaluation List (ESEL) to support the Expedited Seismic Evaluation Process (ESEP).
Calvert Cliffs was required to conduct an ESEP as a result of Screening In as described in May 9, 2014 NRC letter to All Power Reactor Licensees documenting the results of the Screening and Prioritization Process 50.54(f) Regarding Seismic Hazard Re-Evaluations for Recommendation 2.1. In anticipation of this possibility, Calvert Cliffs developed the ESEL in 2013 in conjunction with the FLEX plan development. As the screening had not been completed, Calvert proactively decided to perform the Unit 1 Containment walkdown and obtain photographs of the ESEL installation configurations during the Unit 1 2014 Spring outage. These walkdown and photographs were taken by a Civil Engineer, on the Fukushima Response Team, familiar with the potential information that would be needed by the Seismic Review Team (SRT) to perform High Capacity Low Probability of Failure (HCLPF) calculations. All Unit 1 Containment photographs used by the SRT to calculate HCLPFs were taken in 2014. The SRT was not mobilized at this time and therefore could not support an actual walk by during this outage.
The ESEP was conducted with the assumption that the Unit and Unit 2 configurations would similar if not identical. Unit 2 outage wasnt scheduled until the Spring of 2015. The ESEP report was due to the NRC in December 2014 resulting in Unit 2 ESEL components being listed as inaccessible in ESEP submittal. Therefore, a confirmatory walkdown was performed, by the same Civil Engineer that performed the Unit1 walkdown, to obtain photographs of the Unit 2 ESEL component installation configurations. This walkdown and photography occurred on February 20, 2015.
The SRT used the Unit 1 photographs in conjunction with the approved design drawings to perform HCLP calculations and or screen out the components from needing further evaluation per EPRI NP 6041-SL A Methodology for Assessment of Nuclear Plant Seismic Margin.
The remainder of this report is the photographic evidence that show the Unit 1 and Unit 2 configurations are the same and therefore the assumption, that the configurations are the same, in the submitted ESEP report is correct.
No further walkdowns are planned or required to meet the ESEP requirements.
Page 2
UNIT 1 Equipment ID No: 1LT-103 Equipment
Description:
Pressurizer Level Page 3
Equipment ID No: 1LT-110X Equipment
Description:
Pressurizer Level Page 4
Equipment ID No: 1LT-110Y Equipment
Description:
Pressurizer Level Page 5
Equipment ID No: 1PT-105A Equipment
Description:
Pressurizer Pressure Page 6
Equipment ID No: 1LT-1124A Equipment
Description:
Steam Generator Wide Range Level Page 7
Equipment ID No: 1PT-1013A Equipment
Description:
Steam Generator Safety Channel Pressure Page 8
Equipment ID No: 1PT-1023A Equipment
Description:
Steam Generator Safety Channel Pressure Page 9
Equipment ID No: 1TE-5309 Equipment
Description:
Containment Dome Temperature Page 10
Equipment ID No: SIT Tank 11 A Equipment
Description:
11 A Safety Injection Tank Tank Mounting Typical for all SIT Tanks Page 11
Equipment ID No: 1LT-321 Equipment
Description:
11 A SIT Level Transmitter Page 12
Equipment ID No: 1PT-321 Equipment
Description:
11 A SIT Pressure Transmitter SIT Pressure Transmitter SIT Level Transmitter Note: SIT Level and Pressure Transmitters are located on the same Instrument Rack. Typical for both Unit 1 and 2 SIT Tanks instrumentation.
Page 13
Equipment ID No: SIT Tank 11 B Equipment
Description:
11 B Safety Injection Tank Tank Mounting Typical for all SIT Tanks Page 14
Equipment ID No: 1LT-311 Equipment
Description:
11 B SIT Level Transmitter Page 15
Equipment ID No: 1PT-311 Equipment
Description:
11 B SIT Pressure Transmitter Page 16
Equipment ID No: SIT Tank 12A Equipment
Description:
12 A Safety Injection Tank Tank Mounting Typical for all SIT Tanks Page 17
Equipment ID No: 1LT-341 Equipment
Description:
12 A SIT Level Transmitter Page 18
Equipment ID No: 1PT-341 Equipment
Description:
12 A SIT Pressure Transmitter Page 19
Equipment ID No: SIT Tank 12B Equipment
Description:
12 B Safety Injection Tank Tank Mounting Typical for all SIT Tanks Page 20
Equipment ID No: 1LT-331 Equipment
Description:
12 B SIT Level Transmitter Page 21
Equipment ID No: 1PT-331 Equipment
Description:
12 B SIT Pressure Transmitter Page 22
Equipment ID No: SIT Tank Discharge Valves Unit 1 - Unit 2 has the same configuration Equipment
Description:
Safety Injection Tank Outlet MOV Page 23
Equipment ID No: SIT Tank Discharge Valves Unit 1 - Unit 2 has the same configuration Equipment
Description:
Safety Injection Tank Outlet MOV Page 24
Equipment ID No: SIT Tank Discharge Valves Unit 1 - Unit 2 has the same configuration Equipment
Description:
Safety Injection Tank Outlet MOV Page 25
Equipment ID No: SIT Tank Discharge Valves Unit 1 - Unit 2 has the same configuration Equipment
Description:
Safety Injection Tank Outlet MOV Page 26