ML13310A812
| ML13310A812 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 06/28/1983 |
| From: | Krieger R SOUTHERN CALIFORNIA EDISON CO. |
| To: | Crutchfield D Office of Nuclear Reactor Regulation |
| References | |
| TASK-06-04, TASK-6-4, TASK-RR NUDOCS 8306280466 | |
| Download: ML13310A812 (17) | |
Text
Southern California Edison Company P. 0. BOX 800 2244 WALNUT GROVE AVENUE ROSEMEAD, CALIFORNIA 91770 6-.2S'83 Director, Office of Nuclear Peactor Regulation Attention: Mr. D. M. Crutchfield, Chief Operating Reactors Branch No. 5 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Gentlemen:
Subject:
Docket No. 50-206 Responses Related to Draft Evaluation Report SEP Topic VI-4, Containment Isolation System San Onofre Nuclear Generating Station Unit I Your letter of March 3, 1982 from Mr. Paulson to Mr. Dietch requested information regarding the as-built facility as it may differ from the licensing bases assumed in your assessment of the subject SEP Topic.
Additionally, you requested statements of the defined basis upon which some specific isolation configurations were judged to be acceptable by SCE.
The information regarding the as-built facility is provided in Enclosures 1 and 2. Specifically, the results of our review of Table I of the Draft Evaluation are provided in Enclosure 1. Changes and additions to reflect the as-built facility have been incorporated in the table in. Responses to the remarks given in Table 2 of the Draft Evaluation are provided in Enclosure 2. Also, included in this enclosure are statements regarding the defined basis upon which some specific configurations are judged acceptable by SCE.
The present input is limited to our initial review of this topic.
We are continuing our review and any additional information will be provided for inclusion in your final evaluation during the Integrated Assessment.
In Section "VI. Conclusion" of the Draft Evaluation Report, statements were made that elicit response. The statements and responses follow:
- 1. "The Licensee should discuss the unique characteristics of the valves (POV-9 and POV-10 of lines 15 and 16) closest to the containment to terminate valve shaft or bonnet seal leakage, or the provisions in the plant for controlling leakage."
8306280466 830628 PDR ADOCK 05000206 P
-2 Response: There are no unique characteristics of these valves to terminate valve shaft or bonnet seal leakage. However, a type C test, conducted in accordance with 10 CFR 50 Appendix J requirements, is performed at 6 month intervals. Technical Specifications are currently being revised to incorporate acceptance criteria for type C testing. Accordingly, appropriate maintenance provisions and reporting requirements will be established to provide actions to be taken in the event that the acceptance criteria are not met.
- 2. a) "However, the licensee should discuss the provisions made to allow the operator in the control room to know when to isolate fluid system lines (Refueling Water Supply, Reactor Coolant Letdown, Seal Water Return) equipped with remote manual valves...."
Response: The refueling water supply line has three normally closed valves inside containment:
CV-92 is a manually operated valve used for fire protection in the areas of the reactor coolant pump motors. CV-114 and -82 are opened by a containment spray actuation signal and closed when it is determined there is no further need for spraying. The refueling water supply line has pressure and flow transmitters.
The Reactor Coolant Letdown line has temperature and flow elements and a pressure transmitter.
The Seal Water Return line has temperature and flow elements and pressure transmitters which indicate differential pressure across the reactor coolant pumps.
b) "For lines 46, 47, 48, and 49, remote manual valves are not appropriate. Since these lines are non-essential, automatic isolation valves should be provided."
Response: These lines are part of the Reactor Coolant Sampling System. A commitment was made in our letter dated November 22, 1982, regarding SEP Topic VI-4 (Electrical), to provide the six inside-containment isolation valves of the RCSS with the capability for automatic containment isolation. This modification is scheduled to be implemented prior to resumption of power from the next refueling outage.
- 3. No response elicited.
- 4. "The licensee should provide additional information regarding the design of the closed systems (cooling water side of residual heat exchangers, excess letdown heat exchangers and cooling water for reactor coolant pumps and shield cooling coils) inside containment for these penetration lines."
Response
These lines penetrate the primary containment boundary but do not communicate with the reactor coolant system pressure boundary nor are they connected directly to the containment
-3 atmosphere. They are designated Seismic Category I and are to be evaluated during the seismic reevaluation program, also these systems are designated Safety Class 2. SEP Topics III.4A and III.5A encompass the areas for protection against missles and pipe whip.
The determination of the acceptability of the existing protection will be made by these topics. The physical design of these lines is as follows:
These lines are for 150 psig and 500OF non-radioactive service. They are comprised of carbon steel, ASTM A53 Grade A, Schedule 40 pipe and forged, weld-neck, ASTM A181 Grade I, 150
- RC, Schedule 40 flanges installed in conformance with B31.1.
In light of GDC 57, the acceptability of the present valving arrangement (as designated by Enclosure 1) will be determined during the Integrated Assessment.
- 5. No response elicited.
- 6. "Therefore, the licensee should justify the isolation provisions for these branch lines (to main steam lines)."
Response: The branch connections upstream of the turbine stop valves are configured as shown in Enclosure 1. In light of the previous accident analyses performed of the main steam system, i.e., main steam line break and steam generator tube rupture which were analyzed in the Final Safety Analysis, it is not considered practical to perform plant modifications on the main steam lines in order to comply with the requirements of GDC 57.
The tube rupture analysis, performed in the San Onofre Unit 1 FSA, hypothesized a double-ended rupture of one steam generator tube occuring while the plant is at full rated power with a maximum steam bypass requirement. The method of analysis utilizes a magnitude of radioactive discharges which are a measure of the worst case consequences of a tube rupture for a given level of activity in the reactor coolant. The results of this analysis showed that the environmental consequences to the health and safety of the public was within acceptable limits. In reference to the steam line break analysis, conditions ensuing from a steam line break show that the safety of the general public is assured by the continued integrity of the Reactor Coolant System barrier. Cases of uncontrolled steam discharge by means other than pipe rupture, such as improper opening of the steam dump or bypass valves, also concluded that releases would be well below acceptable limits.
-4 The primary objective of providing containment isolation is to prevent or limit the escape of fission products that may result from postulated accidents. The above mentioned analyses have shown that modifications to satisfy GDC 57 would not significantly decrease the release of these fission products. For this reason, it is not considered necessary for the branch lines of the main steam lines to satisfy GOC 57.
The final determination regarding this position will be made during the Integrated Assessment.
- 7. "The licensee should identify all branch connections (to the refueling water supply line) and justify the adequacy of the isolation provisions for these lines (outside containment) in light of GDC 54 and 56 requirements."
Response
The branch lines connected to penetration line 1, the refueling water supply line, are configured as noted in. The isolation valves on each of these branch lines provide adequate isolation in the event of a power failure to the valve actuator by failing to the position of greater safety. The normal position of the branch line valves, with the exception of the pressure instrument connections, is in a closed or locked closed position. The refueling water supply line is leak tested every refueling outage by hydrostatically pressurizing the entire system.
Leakage through any of the branch lines will be detected during this hydrostatic leak test and treated accordingly.
- 8. No response elicited.
- 9. "The licensee should provide information in Table 1 on valve positions, whether or not the line is essential, and the isolation signal (including parameters sensed to actuate the signals) for each isolation valve."
Response
Information is provided by Enclosure 1.
If you have any questions or desire additional information reqarding this subject, please contact me.
Very truly yours, R. W. Krieger Supervising Engineer San Onofre Unit 1 Licensing Enclosures
ENCLOSURE 1 Changes to Information on Table 1 of Draft Evaluation of Topic VI-4 The enclosed table lists, by line number, the information to be changed or added to the information in the Draft Evaluation as well as other information of interest regarding the listed lines. The lines omitted from the attached table are considered to be an accurate description of the as-built facility.
Abbreviations used in this table are:
NO, C, LC normally open, normally closed, locked closed CHECK check valve RMS, RM+I, Man -
remote manual switch, remote manual plus instrument actuation, manual control SR, NSR, BC safety related, not-SR, (ASME) B&PV Code SIAS Safety Injection Actuation Signal CIAS Containment Isolation Actuation Signal CSAS Containment Spray Actuation Signal Ar As Is The SIAS is comprised of:
Low Pressurizer Pressure, 2 out of 3; OR High Containment Pressure, 2 out of 3; OR manual initiate.
Note:
During test mode SIAS is comprised of the Test Signal AND [Low Pressurizer Pressure OR High Containment Pressure].
The CIAS is comprised of:
SIAS, 1 out of 2; OR High Containment Pressure, 2 out of 3; OR High Containment Radiation; OR manual initiate..
The CSAS is comprised of SIAS AND High-High Containment Pressure, OR manual initiate.
MJT:6685
ENCLOSURE 1 FACILITY AS-BUILT CHANGES FOR TABLE 1 SEP Topic VI-4, CIS Review Items Page 1 of 10 ITEM SYSTEM NAME PENE-VALVE IDEN-OPERATOR LOCA-POSITION ES NUM- & SERVICE, TRATION TIFICATION
& VALVE TION NOR-SHUT POST PWR.
SEN-ACTUA BER LINE IDENT.
IDENT.
NUMBER TYPE RE CTMT MAL DOWN LOCA FAIL TIAL TION REMARKS 1
Misc. Water Sys. B-18A (MWS) 734-6"-GM 6"-900-25(2)
Globe Outside LO 0
0 Y
See Inside Branches 6"-300-241(2)
Check Outside Check Branches Inside 734-6" CV-82 SV-128 Inside C
C 0
0 Y
CSAS Containment Spray; Also RM 8020-6" CV-114 SV-118 Inside C
C 0
0 Y
CSAS Containment Spray; Also RM 765-4" CV-92 SV-116 Inside C
C 0
0 Y
CSAS Containment Spray; Also RM 735-4" 4"-150-181 Globe Inside C
0/C C
Al Man Supply to Refueling Cavity Branches Outside 6016-4"-301R MOV-880 Motor Outside C
C C
C AI RM 736-4" 4"-900-25 Globe Outside LC C
AI Y
Man 7175-2" 2"-300-54 Gate Outside C
AI Man 1"-600-152 Globe Outside C
AI Man Vent or Drain of Nitrogen Test 3/4"-600-142 Globe Outside C
AI Man Vent or Drain of Nitrogen Test 891-2" 2"-600-226 Check Outside Check Y
Connects 734 to 737 (Item 2) 2"-600-36 Gate Outside C
AI Man Instr (PP) 3/4"-600-152 Globe Outside 0
0 0
AI Man 3/4"-600-154(2)
Globe Outside 0
0 0
AI Man 1150-3/4" SV-600 & 601 Solenoid Outside C/C C/C 0/0 Y
RM Chemical Addition, Parallel Valve Containment Spray; Also RM 2
MWS B-11 737-8"-JN 8"-150-74 Gate Inside C
C AI Man 8"-150-452 Gate Inside C
C AI Y
Man Becomes 728-8"-HP After HX Branches Inside 876-1.5" 1.5"-150-76 Gate Inside C
Man 6018-6" MOV-866B Motor Inside 0
0 C/0 AI Y
RM Recirculation SI 6019-6" MOV-866A Motor Inside C
C C/O AI Y
RM Recirculation SI Branches Outside 863-1"-HP 1"-600-152 Globe Outside 0
0 0
Y Man Becomes - GM, parallel with 8005-1"-GM to G-27N 8005-1"-GM 1"-600-152 Globe Outside 0
0 0
Y Man Parallel with 863-1"-GM to G-27S 6015-6"-151R MOV-1100 B/D Motor (2)
Outside C
C 0
0 Y
SIAS SI Alternate Loop 891-2"-HP 2"-500-36 Gate Outside C
C Y
Man Connects 737 to 734 (Item 1)
ENCLOSURE 1 FACILITY AS-BUILT CHANGES FOR TABLE 1 SEP Topic VI-4, CIS Review Items Page 2 of 10 ITEM SYSTEM NAME PENE-VALVE IDEN-OPERATOR LOCA-POSITION ES NUM- & SERVICE, TRATION TIFICATION
& VALVE TION NOR-SHUT POST PWR.
SEN-ACTUA BER LINE IDENT.
IDENT.
NUMBER TYPE RE CTMT MAL DOWN LOCA FAIL TIAL TION REMARKS 3
MWS A-11 730-2"-KN CV-537 SV-537A, Air Inside 0
C C
C N
CIAS Delete PS 117; RMS2045/SV537A CV-115 SV-126, AirO Outside 0
C C
C 4
MWS A-9A 743-8"-KN CV-516 E/H Ball Outside 0
0 C
C N
RM RMS 2010; No Auto Closure; Closed System Inside CTMT 5
MWS A-9B 756-8"-KN CV-515 E/H Ball Outside 0
0 C
C N
RM RMS 2009; No Auto Closure; Closed System Inside CTMT 6
MWS A-14 892-4"-KN 4"-250-159 Globe Outside 0
0 C
AI N
Man No Auto Closure; CV-515 E/H Ball Outside 0
0 C
C N
RM See Item 5 7
C-3B Cond. System (F&CS) 391-10"-EG 10"-600-31B Gate Outside 0
0 0
AI N
Man SR, BC 10"-600-222 Check Outside Check N
Check SR, BC FCV-458 Flow Control Outside Modulates 0
N Auto SIAS, NSR; RMS Also MOV-22 Motor Outside 0
0 C
AI Auto Closes on SIAS, RMS; Not BC Branches Outside 381C-3"-EG 3"-600-139 Globe Outside 0
0 0
AI Man Aux. FW; between penet. & check 1111-1/2"-EG1 1/2"-600-143 Globe Outside C
C AI Man Chem. Feed; between penet. & check Bypasses The Lines Four Valves 1st Bypass 2"-600-131 Gate Outside 0
0 Al Man SR, BC 2"-600-229 Check Outside check SR, BC 2"-600-135 Gate Outside C
C C
AI Man NSR 2nd Bypass 4"-600-37 Gate Outside 0
0 AI Man SR, BC 4"-600-222 Check Outside Check SR, BC CV-143 Control Outside C
C FC SIAS RMS, SV-151; NSR 4"-600-37 Gate Outside 0
0 0
AI Man
ENCLOSURE 1 FACILITY AS-BUILT CHANGES FOR TABLE I SEP Topic VI-4, CIS Review Items Page 3 of 10 ITEM SYSTEM NAME PENE-VALVE IDEN-OPERATOR LOCA-POSITION ES NUM- & SERVICE, TRATION TIFICATION
& VALVE TION NOR-SHUT POST PWR.
SEN-ACTUA BER LINE IDENT.
IDENT.
NUNIBER TYPE RE CTMT MAL DOWN LOCA FAIL TIAL TION REMARKS 8
F&CS C-3A Like Item 7 Except FCV-456 Flow Control Outside Modulates 0
N Auto Line Valve MOV-21 Motor Outside 0
0 C
AI Auto Line Valve CV-142 Control Outside C
C FC SIAS Bypass Valve 3
n1-3
"-EG Like 381C-3"-EG of Item 7 1110-1/2"-EG1 Like 1111-1/2"-EGI of Item 7 9
F&CS C-3C Like Item 7 Except FCV-457 Flow Control Outside Modulates 0
N Auto Line Valve MOV-20 Motor Outside 0
0 C
AI Auto Line Valve CV-144 Control Outside C
C FC SIAS Bypass Valve 381B-3Like 381C-3"-EG of Item 7 1112-1/2"-EG1 Like 1111-1/2"-EG1 of Item 7 10 F&CS C-1B 342-2"-EG 2"-1500-156 Globe Inside 0
0 0
AI N
Man Add Valve; Manual Valves are BC 2"-1500-127 Globe Outside C
C C
N Man 1.5"-1500-128 Globe Outside C
C C
N Man 347-3"-EGX Unnumbered Gate Outside 0
0 0
AI N
Man Header for items 10, 11 and 12 347-3"-EGX CV-100B Control Outside 0
0 C
FC Rad Closes on High Radiation R 1216 Branch Unnumbered Gate Outside C
C C
AI N
Man to C-12 from 347 Branch CV-100 Control Outside 0
0 C
FC N
Rad Closes RM 1216 11 F&CS C-1B 314-2"-EG See Entry for Item 10 12 F&CS C-1C 343-2"-EG See Entry for Item 10 13 F&CS A-13 928-1.5"-HH 1.5"-600-240 (2) Check In/Out Check N
1.5"-600-146 Globe Outside 0
0 0
AI Man Valve of 928 1.5"-600-161 Globe Inside 0
0 0
AI Man Branch 3/4"-600-161 Globe Outside C
C C
AI Man Between Penet. and Check Valve 3/4" -600-161 Globe Outside C
C C
AI Man Between Check and Globe Valve 928-1.5"-HH PCV-40 Press. Req.
Outside Self Valve of 928 Branch 3/4"-600-161 Globe Inside C
C C
AI Man 1/2"-600-146 Globe Inside C
C C
Al Man
ENCLOSURE 1 FACILITY AS-BUILT CHANGES FOR TABLE 1 SEP Topic VI-4, CIS Review Items Page 4 of 10 ITEM SYSTEM NAME PENE-VALVE IDEN-OPERATOR LOCA-POSITION ES NUM- & SERVICE, TRATION TIFICATION
& VALVE TION NOR-SHUT POST PWR.
SEN-ACTUA BER LINE IDENT.
IDENT.
NUMBER TYPE RE CTMT MAL DOWN LOCA FAIL TIAL TION REMARKS 15 Air Intake E-1 (A/C) 24" Supply POV-9 Double Outside C
0/C C
C N
CIAS Accumulator for Closure Power Pneumatic RAD High Radiation R 1211/1212 Butterfly RM RMS/SV-29 9A Butterfly Outside LC 0
C Al Man 16 Air Exhaust E-1 (A/C) 24" Exhaust POV-10 Same Outside C
O/C C
C N
Same Same as POV-9 except has RMS/SV-30 as POV-9 as POV-9 1OA Butterfly Outside LC 0
C AI Man 17 Instr. Air B-17B Exhaust 961-6"-HH3 CV-40 Pneu. 3-Way Inside 0
0 C
C N
Remark CIAS, High Radiation (R-1211/1212)
CV-116 Pneu. BTF Inside 0
0 C
C Remark and RMS/SV-19, SV-127 CV-10 Pneu. BTF Outside 0
0 C
C Remark SV-28 18 Air Cond. (A/C) B-188 1233-1"-KP3 CV-147 Pneu. Cont.
Inside 0
0 C
C N
Auto,RM CIAS and High Radiation, SV-1212-9 Solenoid Outside 0
0 C
C Auto,RM RMS 2505-3/8"-BH 3/8"-3000-406 Globe Outside C
O/C C
AI Man Nitrogen Line - Test 19 A/C B-18B 1234-1"-KP3 CV-146 Pneu. Contr.
Inside 0
0 C
C Auto,RM SV-1212-8 Solenoid Outside 0
0 C
C N
Auto,RM Like Item 18; Capped Inside 2502-3/8"-BH 3/8"-3000-406 Globe Outside C
0/C C
AI Man 20 Reactor Coolant A-5 System (RCS) 1409-3/4"-HH CV-532 Pressure/Sol Outside 0
0 C
C N
RM No Automatic Closure 1"-600-239 Check Inside Check Branch 3/4"-600-142 Globe Outside C
C C
AI Nitrogen Test
ENCLOSURE 1 FACILITY AS-BUILT CHANGES FOR TABLE 1 SEP Topic VI-4, CIS Review Items Page 5 of 10 ITEM SYSTEM NAME PENE-VALVE IDEN-OPERATOR LOCA-POSITION ES NUM- & SERVICE, TRATION TIFICATION
& VALVE TION NOR-SHUT POST PWR.
SEN-ACTUA BER LINE IDENT.
IDENT.
NUMBER TYPE RE CTMT MAL DOWN LOCA FAIL TIAL TION REMARKS 21 RCS B-2 715-2"-HP 540-2"-C42 Check Inside Check N
CV-533 Pneu. Ball Inside 0
0 C
RM,Auto CIAS, RMS-2039 CV-534 Pneu. Ball Otuside 0
0 C
RM,Auto CIAS, RMS-2040 CV-566 Pneu. Control Outside 0
0 C
RM 2507-3/8" 3/4"-600-142 Globe Outside C
0/C C
AI Man Nitrogen Line for Test Drain 3/4"-600-142 Globe Outside C
O/C C
AI Man 22 Chem.
& Volume B-6 Contr.
(CVCS) 3006-2"-601R 3/4"-600-142 Globe Outside C
0/C C
Al Y
Man Branch CV-525 E/H Ball Inside 0
0 O/C C
RMS RMS 2033 CV-626-E/H Ball Outside 0
0 0/C C
RM RMS 2034 23 CVCS B-5 2002-2"-2502 FCV-1112 Pneu. Angle Outside 0
0 C
C Y
Auto SIAS to 2080-2"-2501R 354-2"-C58 Check Inside Check Branches from Ending of 2002 2081-2"-2501R 308-2"-C58 Check Inside check at Regen. HX 25 CVCS B-7A 2011-2"-2502R 264-2"-C58 Check Inside Check FCV-1115C Pneu. Angle Outside Mod C
C C
N SIAS 2012-2"-2502R FCV-1115F Pneu. Angle Outside C
C C
C N
SIAS Bypasses FCV-1115C 2092-2"-2502R MOV-358 Motor Inside C
C AI N
RM Branch 26 CVCS B-7B 2008-2"-2502R 272-2"-C58 Check Inside Check FCV-1115B Pneu. Angle Outside Mod C
C C
N SIAS 2009-2"-2502R FCV-1115E Pneu. Angle Outside C
C C
C N
SIAS Bypasses FCV-1115B 2090-2"-2502R MOV-356 Motor Inside C
C AI N
RM Branch 27 CVCS B-7C 2005-2"-2502R 280-2"-C58 Check Inside Check FCV-1115A Pneu. Angle Outside Mod C
C C
N SIAS 2006-2"-2502R FCV-1115D Pneu. Angle Outside C
C C
C N
SIAS Bypasses FCV-1115A 2091-2"-2502R MOV-357 Motor Inside C
C AI N
RM Branch
ENCLOSURE 1 FACILITY AS-BUILT CHANGES FOR TABLE 1 SEP Topic VI-4, CIS Review Items Page 6 of 10 ITEM SYSTEM NAME PENE-VALVE IDEN-OPERATOR LOCA-POSITION ES NUM- & SERVICE, TRATION TIFICATION
& VALVE TION NOR-SHUT POST PWR.
SEN-ACTUA BER LINE IDENT.
IDENT.
NUMBER TYPE RE CTMT MAL DOWN LOCA FAIL TIAL TION REMARKS 28 Aux. Coolant A-1B System (ACS) 3090-8"-152N 772B-8"-G32 Gate Outside 0
0 C
AI Y
Man Add 3/4" Capped Vent; Paired w/29 Closed System Inside CTMT 29 ACS A-1A 3029-8"-152N 777b-8"-G32 Gate Outside 0
0 C
AI Y
Man Add 3/4" Capped Vent; 3031-2"-152N RV-775B Relief Outside Relief Y
Bypass Outside Valves 3029-8"-152N TCV-601B Pneu. T.C.
Outside C
C C
C Y
Temp Paired W/28; delete "Auto By" 777B-8"-G32 Gate Outside 0
0 C
AI Y
Man Outside of TCV-6Ul8 30 ACS A-ID 3064-8"-152N 772A-8"-G32 Gate Outside 0
0 C
AI Y
Man Paired W/31; Drain/Test Inside
& Outside CTMT; Closed System Inside CTMT 31 ACS A-1C 3033-8"-152N TCV-601A Pneu. T.C.
Outside 0
0 C
C Y
Temp Delete "Auto"; Test/Drain 777A-8"-G32 Gate Outside 0
0 AI Man Gate Valve Outside TCV 32 ACS A-4B 3069-3"-152N 729A-3"-C32 Check Inside check Y
Check Paired W/33; Closed System 728A-3"-G32 Gate Outside 0
0 C
Al Man Inside CTMT; Test/Drain 33 ACS A-4A 3073-3"-152N 735A-3"-T32 Globe Outside 0
0 AI Y
Man Test/Drain 736A-3"-G32 Gate Outside 0
0 C
Man 34 ACS A-4F 3068-3"-152N 729B-3"-C32 Check Inside Check Y
Check Paired W/35; Closed System Inside 728B-3"-G32 Gate Outside 0
0 C
AI Man CTMT; Test; Drain 35 ACS A-4E 3078-3"-152E 735b-3"-T32 Globe Outside 0
0 AI Y
Man Test/Drain 736B-3"-G32 Gate Outside 0
0 C
AI Man
ENCLOSURE 1 FACILITY AS-BUILT CHANGES FOR TABLE 1 SEP Topic VI-4, CIS Review Items Page 7 of 10 ITEM SYSTEM NAME PENE-VALVE IDEN-OPERATOR LOCA-POSITION ES NUM- & SERVICE, TRATION TIFICATION
& VALVE TION NOR-SHUT POST PWR.
SEN-ACTUA BER LINE IDENT.
IDENT.
NUMBER TYPE RE CTMT MAL DOWN LOCA FAIL TIAL TION REMARKS 36 ACS A-4D 3067-3"-152N 729C-3"-C32 Check Inside Check Y
Check Paired W/37; Closed System 728C-3"-G31 Gate Outside 0
0 C
AI Man Inside CTMT; Test/Drain 37 ACS A-4C 3083-3"-152N 735C-3"-T32 Globe Outside 0
0 Al Y
Man Test/Drain 736C-3"-G32 Gate Outside 0
0 AI 38 ACS A-2A 3094-2.5"-HH 2.5"-150-72 Gate Outside 0
0 AI Y
Paired W/39; Test/Drain; Closed System Inside CTMT 39 ACS A-2B 3095-2.5"-HH 2.5"-150-174 Globe Outside 0
0 AI Y
Test/Drain 40 ACS A-3A 3066-3"-152N 728D-3"-G32 Globe Outside C
C AI Y
Paired W/41; Test/Drain; Closed System Inside CTMT 41 ACS A-3B 3085-3"-152N 735D-3"-T32 Globe Outside C
C AI Y
Man Test/Drain 736D-3"-G32 Gate Outside 0
0 AI Man 45 Safety Injection B-17A System (SIS) 6009-2"-1501R 855A-2"-C57 Check Inside Check Y
Purges 6006, 6007, 6008 to 6028-2"-1501R 855R-2"-C57 Check Inside Check Refueling Water Tank; 6010-2"-1501R 855C-2"-C57 Check Inside Check Check Valves Enable Flow Out 860-2"-T57 Globe Outside LC C
C AI Man of Containment RV-868 Relief Outside Relief To Hold-up Tanks 869-3/4"-T57 Globe Outside C
AI Man To Hold-up Tanks 874-3/4"-T57 Globe Outside C
AI Man Local Sample 857-3/4"-C57A Check Outside Check Relief Opens at 700 psig to Hold-up Spring Loaded Check Valve
ENCLOSURE 1 FACILITY AS-BUILT CHANGES FOR TABLE 1 SEP Topic VI-4, CIS Review Items Page 8 of 10 ITEM SYSTEM NAME PENE-VALVE IDEN-OPERATOR LOCA-POSITION ES NUM- & SERVICE, TRATION TIFICATION
& VALVE TION NOR-SHUT POST PWR.
SEN-ACTUA BER LINE IDENT.
IDENT.
NUMBER TYPE RE CTMT MAL DOWN LOCA FAIL TIAL TION REMARKS 46 SIS B12 5029-3/8"-2505R CV-951 Pneu/SV-951 Inside C/U 0/C C
C RM Hood CV-953 Pneu/SV-953 Inside C/U O/C C
C N
RM Hood Replace PS-23, 177 with CIAS CV-992 Pneu/SV-992 Outside C/o 0/C C
C RM,Auto Interior Valves UP Farm Hood 47 Reactor Cycle B-12 Sample System (RCSS) 5004-3/8"-2505R CV-955 Pneu/SV-955 Inside C/U C/U 0
C N
RM Hood Must be opened for PASS sampling CV-956 Pneu/SV-956 Inside C/U C/U 0
C RM Hood Must be opened for PASS sampling 3/8"-1500-141 Globe Outside C
C C
AI Man Nitrogen Test; Between SV-3302 Solenoid Outside C/U C/U 0/C C
RM,Auto SV-3302 and Penetration CV-2046 Pneu/SV-2046 Outside C
C C
C CIAS,RM PASS 5057-1/2"-BH PASS line between SV-3302 and CV-2046 48 RCSS B-12 3008-3/8"-2505R CV-962 Pneu/SV-962 Inside C/U C/U C
C RM Hood CV-957 Pneu/SV-957 Outside C/U C/U C
C N
RM,Auto Replace PS-23, 177 with CIAS 1271-3/8"-BH 3/8"-1500-141 Globe Outside C
C C
AI Man Nitrogen Test 49 RCSS B-12 5052-3/8"-2505R CV-948 Pneu/SV-948 Inside C/0 C/U C
C RM Hood Replace PS-23, 177 with CIAS CV-949 Pneu/SV-949 Outside C/U C/U C
C N
RM,Auto Replace PS-23, 177 with CIAS 50 Radwaste A-8 Disposal System (RWDS) 7078-1.5"-HP2 CV-102 Pneu/SV-108 Inside 0
C C
C N
RM,Auto Replace PS-23, 177 with CIAS CV-103 Penu/SV-109 Outside U
C C
C RM,Auto Nitrogen Test Outside Penet.
51 RWDS B-10 7076-2"-HP2 CV-104 Pneu/SV-110 Inside 0
C C
C Auto,RM CV-105 Pneu/SV-111 Outside 0
C C
C N
Auto,RM Replace PS-23, 117 with CIAS; Nitrogen Test Outside Penet.
ENCLOSURE 1 FACILITY AS-BUILT CHANGES FOR TABLE 1 SEP Topic VI-4, CIS Review Items Page 9 of 10 ITEM SYSTEM NAME PENE-VALVE IDEN-OPERATOR LOCA-POSITION ES NUM- & SERVICE, TRATION TIFICATION
& VALVE TION NOR-SHUT POST PWR.
SEN-ACTUA BER LINE IDENT.
IDENT.
NUMBER TYPE RE CTMT MAL DOWN LOCA FAIL TIAL TION REMARKS 52 RWDS C-2C 7073-2"-HP2 CV-106 Pneu/SV-112 Inside 0
C C
C N
Auto,RM Same as Item 51 CV-107 Pneu/SV-113 Outside 0
C C
C Auto,RM 53 RWDS C-2B 1410-1"-HH CV-536 Pneu/SV-536A Inside 0
C C
C N
RM,Auto CIAS, Delete Alarm Switch CV-535 Pneu/SV-535A Outside 0
C C
C RM,Auto 54 Main Steam 1-J-1 1-24"-EG Mainstop Gate/Turb Outside 0
C C
Turbine CV-140 Gate/Penu.
Outside C
O/C C
Y RM Mainstop Closes on Turbine Trip 51-24"-EG RV-X Relief Outside Relief X=2,4,6,8,10; Parallel Valves CV-Y/SV-85,SV-87 Control Outside C
C RM Y=75,78; Also parallel 1-24"-EG 24"-600-27BG Gate Outside 0
0 AI Man In 1-24"-EG Ahead of Mainstop 14-20"-EG None Outside Interconnects Steam Main Lines Unnumbered (2)3/4"-600-135 Globes Outside 0
0 AI Man Connects Main Lines to Drain Trap-1 80-1"-EG 1"-600-135 Globe Outside C
C AI Man To Blowdown Tank from DT-1 17-8"-EG MOV-14, CV-126 Motor,Control Outside 0
AI/C RM To Reheater E-25A from 1-24"-EG MOV-15, CV-127 Motor,Control Outside 0
AI/C RM To Reheater E-25B from 1-24"-EG 11-1"-EG 1"-600-135 Globe Outside 0
0 Al Man To 10-1.b"-EG (to air ejectors)
Unnumbered (2)3/4"-600-229 Globes Outside 0
0 AI Man Connects Main Lines to Drain Trap-2 Unnumbered Unnumbered Gate Outside C
C AI Man Bypasses Mainstop Valve 55 Main Steam 2-J-1 2-24"-EG Mainstop Gate/Turb Outside 0
C C
Turbine CV-141 Gate/Pneu Outside C
0/C C
Y
- RM Mainstop closes on turbine trip 2-24"-EG 24"-600-27BG Gate Outside 0
0 AI Man in 2-24"-EG ahead of mainstop 50-24"-EG RV-X Relief Outside Relief X=1,3,5,7,9; Parallel Valves CV-Y/SY-86,SY-88 Control Outside C
C RM Y=77,79; Also Parallel 18-10"-EG MOV-16,CV-124 Motor,Control Outside 0
AI/C RM To Reheater E-25C From 2-24"-EG MOV-17,CV-125 Motor,Control Outside 0
AI/C RM To Reheater E-25D From 2-24"-EG 10-1.5"-EG 1"-600-135 Globe Outside 0
0 AI Man To 10-1.5"-EG (to air ejectors)
Unnumbered Unnumbered Gate Outside C
C AI.
Man Bypasses Mainstop Valve See Item 54 for Four Common Lines
ENCLOSURE 1 FACILITY AS-BUILT CHANGES FOR TABLE 1 SEP Topic VI-4, CIS Review Items Page 10 of 10 ITEM SYSTEM NAME PENE-VALVE IDEN-OPERATOR LOCA-POSITION ES NUM- & SERVICE, TRATION TIFICATION
& VALVE TION NOR-SHUT POST PWR.
SEN-ACTUA BER LINE IDENT.
IDENT.
NUMBER TYPE RE CTMT MAL DOWN LOCA FAIL TIAL TION REMARKS 56 Turbine Cycle B-12 Sample System (TCSS) 1201-3/4"-EG1 (2)3/4"-600-137 Globes Outside 0
AI Man Replace PS-23, 177 with CIAS SV-119 Solenoid Outside 0
C C
C N
Rm,Auto 57 TCSS B-12 1202-3/4"-EG1 (2)3/4"-600-137 Globes Outside 0
AI Man Replace PS-23, 177 with CIAS SV-120 Solenoid Outside 0
C C
C N
RM,Auto 58 TCSS B-12 1203-3/4"-EG1 (2)3/4"-600-137 Globes Outside 0
AI Man Replace PS-23, 177 with CIAS SV-121 Solenoid Outside 0
C C
C N
RM,Auto 59 TCSS B-12 1208-3/4"-EG1 (2)3/4"-1500-125 Globes Outside 0
AI Man Replace PS-23, 177 with CIAS SV-122 Solenoid Outside 0-C C
C N
RM,Auto 60 TCSS B-12 1207-3/4"-EG1 (2)3/4"-1500-125 Globes Outside 0
AI Man Replace PS-23, 177 with CIAS SV-123 Solenoid Outside 0
C C
C N
RM,Auto 61 TCSS B-12 1209-3/4"-EG1 (2)3/4"-1500-125 Globes Outside 0
AI Man Replace PS-23, 177 with CIAS SV-124 Solenoid Outside 0
C C
C N
RM,Auto 62 Int. Leak Test A-6 Line 1430-3/4"-HH (3)3/4"-600-142 Globe (1)Inside C C
C AI 2 Paral Globe Outside C
C C
AI N
63 Refueling Wtr.
B-3 to Res. Ht. Ex.
3122-2"-51 2"-649 Check Inside Check Self-act Three branches inside containment 3/4"-630 Gate Outside 0
N2 Supply 2"-629 Gate Outside C
C Man Alternate Hot Leg Safety Injection MJT:7519
ENCLOSURE 2 Responses to Remarks Column of Table 2 of Draft Evaluation of SEP Topic VI-4 Lines 4, 5 and 6:
Remark:
Non-essential line(s) should be automatically isolated both inside and outside the containment (GDC 56).
Response
These lines are not a part of the reactor coolant pressure boundary nor are they connected directly to the containment atmosphere. Therefore, GDC 57 applies. The valves outside containment, and located close to the containment, comprise a configuration in conformance with GDC 57.
The valves are capable of remote manual operation.
Lines 7, 8 and 9:
Remark:
The acceptability of flow control valves is needed.
Response
These lines each have an MOV immediately adjacent to the FCV but outside the boundary. These MOV's close on SIAS.
Line 13:
Remark:
Automatic isolation valve should be provided outside containment.
Response
This line presently utilizes a pressure regulated valve to provide isolation. The acceptability of this configuration will be determined during the Integrated Assessment.
Lines 15 and 16:
Remark (text p. 15):
May be acceptable if the criteria used in design of the piping between the containment and the first valve are sufficiently conservative.
Response
The mechanical equipment and piping up to and including the first isolation valve of these lines will be reevaluated, and upgraded if necessary, to withstand a 0.67g Housner ground motion as part of the seismic reevaluation of mechanical equipment and piping.
Lines 28 through 41:
Remark:
Information regarding design of the closed system inside containment is needed to justify the applicability of GDC 57.
Response
The mechanical equipment and piping of these lines will be reevaluated, and upgraded if necessary, to withstand a 0.67g Housner ground motion as part of the seismic reevaluation of mechanical equipment and piping.
-2 Lines 46 through 49:
Remark: Non-essential line.
Valve inside containment should be automatic isolation valve.
Response
See response to question 2.b of cover letter.
Lines 54 and 55:
Remark:
Review of isolation provisions in branch lines against requirements of GDC 57 remains to be done pending additional information from licensee.
Response
Refer to Enclosure 1 for information related to these lines.
See P&ID 568773.
The mechanical equipment and piping of these branch lines will be reevaluated, and upgraded if necessary, to withstand a 0.67g Housner ground motion as part of the seismic reevaluation of mechanical equipment and piping.
Lines 56 through 61:
Remark:
Pedigree of system piping up to and including isolation valve should be evaluated for acceptability.
Response
The mechanical equipment and piping of these lines up to and including the main isolation valve will be reevaluated, and upgraded if necessary, to withstand a 0.67 g Housner ground motion as part of the seismic reevaluation of mechanical equipment and piping.
Spare penetrations:
These are sealed with blind flanges and are provided with means for testing.
Air locks:
Penetrations of the air lock(s) are only in the external wall and are for testing purposes.
Hatch:
The volume between "o-rings" of the hatch closure is subjected to leak tests.
MJT:7835