ML19274D220
| ML19274D220 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 01/12/1979 |
| From: | Brown S VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Harold Denton, Parr O Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7901160300 | |
| Download: ML19274D220 (11) | |
Text
9 Vinoxx1 A Er.ccrruc Axn Pownic COMI%NY H ICIIM OND,VI H OIN IA 33061 January 12, 1979 Mr. Harold R. Denton, Director Serial No. 005 Office of Nuclear Reactor Regulation LQA/ESG:esh Attn:
Mr. O. D. Parr, Chief Light Water Reactors Branch No. 3 Docket Nos. 50-338' Division of Project Management 50-339 U. S. Nuclear Regulatory Commission Washington, DC 20555
Dear Mr. Denton:
Recently, we filed Amendment 65 to the application for operating licenses for North Anna Units 1 and 2.
The primary purpose of this amend-ment was to update the FSAR to reflect modifications and design changes made to the station since Amendment 64 was prepared during the Summer of 1977.
This update was intended to make the FSAR describe, as accurately as presently possible, station features prior to the issuance of the Unit 2 operating license, expected in the Spring of 1979 One additional amendment is antici-pated for early this year to address several issues still under discussion with the Staff.
As was noted in the cover letter to the amendment, the major part of Amendment 65 was a complete revision of Chapter 6 of the FSAR, as well as its Supplement. As the Staff is aware, several modifications have been made to engineered safety features at North Anna since mid 1977, all of which have been the subject of extensive correspondence between Vepco and the NRC. Since this correspondence, as well as responses to numerous previous NRC comments in the Supplement, superseded much of the material in FSAR Chapter 6, the main text has been revised to incorporate as much of this supplemental material as practical. to this letter provides a cross reference which indicates the dis-position of each of the questions in the Supplement. Attachment 2 lists those changes made to Chapter 6 during this revision which were not directly related to the system modifications previously reviewed by the Staff. As a result af the revisions made by this amendment, Chapter 6 now describes the safeguards systems as presently designed, and presents the results of the analyses previously submitted to the Staff in support of these systems.
Changes made to other sections of the FSAR by this amendment are out-lined in Attachment 3.
It will be noted that a large portion of this information was also previously submitted to the Staff.
7901160$bo
Vswoisis Etzctuic no l'owra CowmNT to Mr. Harold R. Denton 2
We trust that this information will be helpful to you in your review of this amendment.
Very truly yours, n),,
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Attachments: As indicated
ATTACICENT 1 STATUS OF NORTil ANNA 1 AND 2 FSAR COFE~ENT RESPONSES - CIIAPTER 6 Part of the response to this comment has been placed in the text.
The rest remains as is.
The table lists the FSAR section where the first part of the response can be found.
The response to this comment remains the same.
The table lists the section(s) of the text that reference this comment.
The response to this comment referenced part(s) of the text and/or another comment. The table lists the updated references now used in the response.
The response was no longer applicable to the North Anna design and has been removed. The table lists the location of the material that superseded the response.
The comment requests information that belongs in another chapter. The response remains the same.
The table lists the chapter to which the comment should be attached.
All other responses were incorporated within the text.
The new response gives the location in the text of the old response. The table gives this information in tabular form.
l
Comment Number Section Figure Table Comment D6.2.3.1***
6.2.2.1 D6.2.3.2***
6.2.2.2 6.2-86 and 6.2-87 D6.2.3.3 6.2.3.3 D6.3****
6.3.2.2.6 D6.3.1 6.3.2 6.3-1 6.3.4.3 6.1 6.2.1.3.1 6.1.1 6.2.1.3.1 6.2****
6.2.1.3.1 6.139 6.3***
6.2.5.2 6.4**
6.2.2.3.1 6.5 6.2.2.2 1.2-6 6.2.2.3.1 1.2-9 6.5.1***
6.2.2.2 1.2-3 'e 1.2-8 6.2-69 6.5.2***
6.2.2.4 6.3.4.2 3A.79 6.5.3 6.2.2.2 6.2.2.3 6.5.4 6.2.2.4 6.5.5 6.2.2.2 6.3.2.2.3 6.5.6 6.3.2.2.2 6.6***
9.4.1.1 9.4.1.2 9.4.1.3 9.4.1.4 9.4.1.5 9.4.1.6 9.4.5.1 9.4.5.2 9.4.5.3 9.4.5.4 9.4.5.5 9.4.5.6 6.7 6.4.1.3 6.8 6.2.3.2 6.9 6.2.3.2 6.10 6.4.1.4 6.11***
6.4 6.11.1***
6.4 6.12 6.4-1, 2 annd 3 6.13 6.4.1.3 6.14 6.4.1.3 6.15 6.4-1, 2 and 3 6.15.1 6.4.1.2 2
Comment Number Section Figure Table Comment 6.17**
6.4.1.3 6.18**
6.4.1.3 6.19.1***
6.2.2.2 6.2.3.1 6.19.2 6.2.3.3 D6.2.3.3 6.19.3 6.2.3.1 6.2.3.3 6.19.4 6.2.3.3 6.19.5***
6.2.3.3 6.19.6 6.2.2.3 6.19.7 6.2.3.1 6.20***
6.2.1.4 6.21**
6.2.1.3.1 6.22 6.2.1.1.1 6.23**
6.24***
6.3.3.12
- 6. 25f**
6.2.13.1 6.2-20
- 6. 26f*
6.2.1.3.2 6.2-14 6.27**
6.2.1.1.1 6.28**
6.2.1.1.2 6.29**
6.2.2.1 6.30**
6.2.1.1.1 6. 31**>'d 6.3.3.12 6.2-10
- 6. 3 21***
6.2.1.1.1 6.2-5 6.33 6.2.2.1 6.34 6.2.6.3 6.35****
6.2.1.3.2 6.36**
6.2.1.1.2 6.37****
6.116 6.2.1.3.2 6.38****
6.2.1.3.2 6.39 6.2.1.1.2 6.40 6.2.1.1.2 6.41 6.37 6.42 6.2.1.1.2 6.43**
6.444*
6.45 6.2.2.2.2 6.2-66 6.46 6.2.2.2 6.47*
6.2.2.3 6.2-69 6.48 6.2.2.3.2 6.49 6.2.2.4 6.50 6.2.2.4 6.51 6.2.2.2 6.52 6.2.2.3.1 6.53 6.2.4.3 6.54 6.2.4.1 3
Comment Number Section Figure Table Comment 6.55 6.2.4.3 6.2-34 6.56 f 2.4.2 6.57
. 2.4.2 6.58 6.2.4.2 6.2-34 6.59 6.2.4.1 6.60 6.2.4.2 6.2-62 and 63 6.61**
6.62***
3A.11 6.63 6.2.4.2 6.64 6.2.4.2 6.65 6.2.5.3 6.66 6.2.5.3 6.67 6.2.5.2 6.68 6.2.5.2 6.69**
6.2.1.2 6.70 6.2.7.3 6.71 6.2.5.3 6.72 6.2.1.3.1 6.2-51 6.73 6.4.1.3 6.74 6.2.2.3 6.2.3.3 6.75 6.2.2.2 6.76 6.2.2.2 6.2.2.4 6.77**
6.78 6.2.3.4 6.79 6.2.2.4 6.80**
6.2.3.2 6.81**
6.2.3.1 6.82**
6.2.3.1 6.83***
6.3.2.2.6 6.84 6.3.2.1.3 6.3.2.1.4 6.85 6.3.2.2 15.3.1 15.4.1 6.86 6.3.2.2 6.87 6.3.2.1.1 6.88 6.2.4.3 6.89 6.3.2.1.1 6.90 6.3.2.2.1 6.91 6.3.2.1 6.92 6.3.3.4 6.93****
6.3.2.2.6 6.94 6.3.3.1 6.95**
6.3.3.1.3 4
Comment Number Section Figure Table Comment 6.96**
6.97 6.3.3.1.4 6.98 6.3.3.1.3 6.99 6.3.3.1.2 6.100* 55'-
6.2.2.3.2 6.101? '-
6.2.1.3.2 6.102 6.2.7.2 6.103***
6.2.2.2 6.2.2.4 6.2.3.4 6.104**
6.2.1.1.1 6.105**
6.2.1.3.1 6.106 6.3.3.12 6.107**
6.108 6.2.1.3.2 6.109 6.2.1 6.111 6.110 6.2.1.3.2 6.111 6.2.1 6.112 6.2.1.3.2 6.113***
6.2.1.3.2 6.110,6.111, 6.112,6.116 6.114 6.2.1.1.2 6.2-6 to 6.2-10 6.115**
6.116**
6.2.1.1.2 6.117**
6.2.1.3.2 6.118**
6.119***
6.2.2.4 6.120 m 6.2.5.3 6.121****
6.2.2.3.3 6.122 6.2.4.4 6.123 6.2.4.1 6.124 6.2.4.2 6.125 6.2.5.2 6.126 6.2.1.3.1 6.127 6.2.7.4 6.128 6.2.4.4 6.129 6.2.4.4 6.2-64 6.130**
6.131 6.3.3.10 6.132 6.3.3.10 6.133 6.3.2.2.6 6.134 6.3.3.5 6.135****
6.2.2.3.3 6.3.2.2.6 6.136**f 3A.79 6.137 6.3.4.2 6.138**
6.2.1.3.1 6.1394 6.2.1.3.1 5
Comment Numtg Section Figure Table Conunent 6.140**
6.2.1.3.1 6.141 6.2.1.3.2 6.142 6.2.1.1.2 6.2-10 6.143**
6.2.1.1.1 6.144***
6.3.3.12 6.145**
6.146****
6.3.2.2.6 6.3.4.2 6.147**
6.2.1.3.1 6.148*!-
6.2.1.3.1 6.149**
6.2.1.3.1 6.150**
6.2.1.3 6.151*
6.2.1.3.1 6.152**
6.2.1.3.1 6.153**
6.2.1.3.1 6.154***
6.2.1.3.1 6.151 6.155 6.2.2.3 6.156*****
Chapter 5 6.157 6.3.4.2 6.158**
6.2.1.1.1 6.160 6.159 6.2.1.1.1 6.160 6.2.2.1 6.161.1 6.2.2.1 6.161.2**
6. 2.1.1.1 6.2-1 6.161.3 6.2.2.1 6.161.4'*
6.2.2.3.2 6.161.5 6.2.1.1.1 6.161.7 6.2.2.3.2 P6.1**
6.3.2.1.1 6.3-5 6B-1 P 6.1 A**
Appendix 6B 6B-1 6.3-5 P6.2 6.3.2.2.2 P6.2A***
6.3.2.2.2 7.3-33 P6.3*****
Chapter 5 P6.4*****
Chapter 15 P6.54 6.2.3.4 P6.6**
6.4.1.3 P6.7**
6.4.1.4 6
ATTACHMENT 2 CH4NGES IN THE TEXT NOT DUE TO EDITING OR THE INCORPORATION OF THE CO:OIENT RESPONSES CHAPTER 6 In Section 6.2.2.1, the containment high pressure set point for Phase A ESF Actuation was changed from 15 psia to 17 psia.
The HiHi pressure set point for containment spray initiation has been changed from 25 psia to 27.75 psia.
(See Vepco letter No. 565, October 13, 1978).
The Section in 6.2.2.2 on motors has been numbered 6.2.2.2.4.
The sen-tence " Stator temperature rise is 90 C, measured by resistance at 115 percent los.," has been added.
Comment 6.52 was incorporated into Section 6.2.2.3.1 of the text.
In the paragraph on thermal insulation, the number of types of insulation has been changed from 2 to 7.
The paragraph on neutron shielding has been changed to identify the neutron shielding as a dimethyl polysilaxane silicone elastomer.
The response to comment 6.129 is now Table 6.2-64.
Penetrations 79, 80, 81, 82, 83, 84, 85, and 86 are now listed as flooded. Penetrations 32, 100, 108, 97B, and 112 have been added.
In Section 6.2.7.2, the number of resistance temperature monitors has been changed from 21 to 20 to reflect the current design.
In Section 6.3.2.1.5 (formerly 6.3.2.1.7), the design of the heat tracing system has been changed to maintain the fluid between 155 F and 185 F at 400F 0
ambient air temperature instead of 150 F to 1800F.
In Section 6.3.3.4, the upper limtt of boron concentration in the RWST has been changed from 2,500 gpm to 2,100 Lpm to reflect technical specification limita-tions.
Figures 6.4-1, 2, and 3 (formerly S6.12-1, 2, and 3) have been modified to show the addition of electric coils, required by Regulatory Guide 1.5?, to control humidity. The location of the fan, filter, and electric coil assembly has been changed in Figures 6.4-2 and 3 to avoid possible damage during a main steam line break in the turbine building.
=
ATTACHMENT 3 OESCRIPTION OF CHANGES MENDMENT 65 (Excepting Chapter 6 And Its Supplement)
NORTH ANNA UNITS 1 AND 2 FSAR 1.
Revised completion dates for Unit No. 2.
See pp. A4-2 1.1-2 2.
Added descriptive material relating to modifications to the Bearing Cooling Water System previously described by Vepco letter Serial No.
138, April 29, 1977.
See pp.
1.2-16 10.4-31 through 10.4-34 Figs.
10.4.7-1, 2 3.
Update to reflect LOCA reanalysis previously subuitted by letter Serial No. 258, May 5, 1978.
See Fig.
4.3-41 Section 15.4 4.
Update of discussion of Quality Assurance to reflect organization changes, title changes, and current practice.
See Chapter 17 5.
Update of discussion of organization of corporate support to station opera-tion, as well as station personnel changes.
(Chapter 13) 6.
Revisions to Chapter 4 to correct typographical errors, and make minor changes to reflect current terminology and practice.
7.
Proposed changes to several preoperational tests in Chapter 14 to reflect experience gained during Unit 1 startup.
8.
Revisions to descriptions of diesel loading and electrical separation primarily in Chapter 8.
Some of this material was previously submitted by letter Serial No. 469, November 1, 1977. This was updated to reflect recent modifications to Engineered Safeguards and specific Unit 2 details.
See pp.
3A.9-2 7.3-32 Fig.
7.3-9, 15 Section 8.3 9.
Revisions to Sections 8.1 and 8.2 to reflect additional transmission line to be in service with Unit 2.
10.
Revisions to several setpoints to agree with our setpoint study (letter No.
541, September 29, 1978) and request for Technical Specification change
'(letter No. 565, October 13, 1978).
See p.
7.3-14
s Figs.
7.3-21 7.3-23 7.3-24 11.
Revisions to Section 9.2.1 to indicate that service water is chemically treated.
12.
Revisions to discussion of instrument air system.
(Section 9.3.1.2) 13.
Settlement criteria supplied for Unit 2 (P3.9-5) 14.
Table of instrumentation inside the containment revised to reflect cur-rently installed equipment (S7.17-12, 13) 15.
Revisions to S9.96 to account for increased Halon storage for control room fire protection, and to S9.40 and S9.59 to indicate interlocking of vent and exhaust systems with the Halon 1301 fire suppression system.
See also Fig. 9.5.1-3 16.
Revision to page 10.4.3-2 to indicate that Unit 2 has been equipped with a Wet Layup Recirculation System to maintain a uniform water chemistry in the steam generators during outages.
17.
Revisions to Section 5.5.9 to show revisions to steam generator support heating system for Unit 1 as a result of ASLB initial decision, and to indicate that the same system will be provided for Unit 2.
18.
Revisions to sections describing waste handling, to reflect current intent and capabilities.
See pp.
11.2-24 11.5-2 11.5-8 11.5-9 19.
Incorporation of responses to NRC questions previously answered by letter:
S3.76 S3.77 S3.78 S3.79 S5.89 S5.90 20.
Revisions to figures to reflect updates of construction drawings since Summer 1977.
21.
Miscellaneous minor changes, including typographical errors, reference corrections, deletion of redundant information, and revising language to conform to the Technical Specifications.