ML20116H482
| ML20116H482 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 05/08/1996 |
| From: | Blanchard T NORTHEAST NUCLEAR ENERGY CO. |
| To: | |
| Shared Package | |
| ML20116H438 | List: |
| References | |
| 21136-1F, NUDOCS 9608120103 | |
| Download: ML20116H482 (8) | |
Text
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; N w Quarterly ISI Testing of the CTMT Spray System Valves - Facility 2
, SURVEILLANCE COVER SHEET REFERENCE SPEC. REFERENCE PFIOCEotJ1E 8!3/ /7 '/ OF 3 PORC MTG. NCL 4.05 SP 21136 ;) _ cf y _ jn SCHEDULE oATE APP"JCABLE uoDE FREQUENCY All Q TEsr Aurscaso ey oArE css /sCm ACCEPTANCE CRITERIA MET:
CountETEo er oArE AccEmo ey essi om Ovas AeeRcwEo er toEPARTuEur HEAa oATE
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TECH SPEC MAINTENANCE SYSTEM SURVEILLANCE NON-TECH SPEC RESTORATION ALIGNMENT SURVEILLANCE ISI TESTING TEST EQUIPMENT OA NUMBER CAL DUE DATE l ACCEPTANCE CRITERIA
- 1. Valves exhibit required position changes and stroke times (where required) are less than the listed maximum acceptable values.
- 2. Valves move freely from the designated start position to the fail position.
NOTE: Normal stroke times are listed to aid in early identification of valve degradation or system misangnment. NOTE: ISI Data Review (below) not required for surveillance completion. IN ACCORDANCE WITH REFERENCE PROCEDURE INmALS
- 1. PREREQUISITES / INITIAL CONDITIONS COMPLETED
- 2. PRECAUTIONS NOTED
- 3. COMMENTS: (lF MAINTENANCE RESTORATION. INDICATE BELOW WORK ORDER #, ETC.)
If any valve fails to function within the specified stroke time, fails to move promptly to its designated FAIL position or fails to function as required: 1.Immediately declare the valve INOPERABLE
- 2. Initiate corrective action as required by the Technical Specification. AWO No.
- 3. Submit a Plant Information Report and record the number here
- 4. Notify the IST Coordinator or Programs Group Supervisor as soon as poss:,ible PD1No'
( l DATA ISI DATA REVIEW See Pages 2 through 3 COMPLETE PARTIAL ACCEPT ALERT REQ ACT_ INITIALS Eng. Form 21136-1F Rev. 5 e
- I 1
QUARTERLY O ISI TEST"TG OF THE CTMT . aragraph 7.24
- 1. " " Ctmt Spray Pump Minimum Row Recirc (Port le Eow Meter) .
GPM Acce ble
> GPM Pararraoh 7.24.7 1
VALVE NO. DESCRI N I REOUTRED TEST ( INITIALS I 2-CS-6B - "B" CTMT Spray mp Valve Stro s l t Minimum Flow Fully en l Check Valve (Ite 1 Acceptable) l Paragraph 7.24 (Continued)
- 2. "B" Ctmt Spray Header Flow l (Computer Point F-3024)
/ GPM
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! 1350101400 GPhi Paragraph 7.24.12 \ l VALVE NO. DESCRIPTION REOUTRED TEST (S)
\s NNITIALS 2- CS . "B" CTMT Spray Pump Valve Strokes f Discharge Check Valve Fully Open / (Item 2 Acceptable)
Earperaph 7.25 m l l VALVE NO. DESCRIPTION l REOUIRED TEST (S) INITIALS ! ! 2- CS -4.1B "B" CTMT Spray Stroke Time Header CTMTIsolation Full Closed to Full Open Sec - Normal 12.5 to 15.0 Sec ACCEPTABLE 5.15 Sec Full Open to 4 Full Closed Eng. Form 21136-1F Rev.5 I Page 2 of 3 ;: :+.R ?;
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QUARTERIXISITESTG AF THE CTMT SPRAY SYSTEY^ S - FACILITY 2 i Paragraoh 7.26 VALVE NO. DESCRIPTION REOUIRED TEST (S) _INrrIATS l' 2-CS-16.1B CTMT Spray Outlet Stroke Time "B" Header Full Closed to Stop Valve Full Open Sec Normal 41.3 to 55.9 See l l ACCEPTABLE.s;.60 Sec ! l Full Open to l Full Closed l Parsgraoh 7.21 VALVE NO. DESCRIPTION REOUTRED TEST (S) INITIAIE 2-CS-15B CTMT Sump Outlet Valve Strokes Partially Open l "B" Head 6r Check Valve b e i e Eng. Form 21136-1F Rev. 5 Page 3 of 3
e Qurrterly 7c7 T$g of the CTMT Spray S. 41ves - Facility 2 Paragraph 7.21.18 O .5Containment Sump Level (L9155 or LI-9155)~ % Pararraph 7.21.22.a.
- 6. Containment Sump Le, vel (L9155 or LI-9155) %
heraph 7.21.23.a.
- 7. Containment Sump Level (L9155 or LI-9155) %
( Pararraoh 7.21.26
- 8. Containment Sump Level (L9155 or LI-9155) %
O Eng. Form 21136-1F Rev. 5 - Page 3 ,
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July 25,1995 g if' ~' ~ ' ,
~ EOC-95-179 i' "y File 1-E-6 ?, .lRF g.:(
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, . :.,:43 2 dj Mr. Michael Cheskis.
Northeast Utilities Service Company, ?l
~3 P O Box 124, '
Rope Feny Road, Waterford. CT 06385 .A
SUBJECT:
NORTHEAST UTILITIES SERVICES COMPANY MILLSTONE UNIT 2 REVISION TO CALCULATION FOR VALVES 2 CS-16.1 A & B 2
Dear Mr. Cheskis,
Based on yesterday's telecon with our Mr. Nandu Patankar, Raytheon was requested to provide a revised calculation for determining the bonnet Guld t+ dure following a LOCA for Valve Tag Numbers 2 CS 16.1 A & B. The revised input for this cafe'd=% should consider: i (a) the upstream pipe to be MI of water upto Elv. (-) 26'-6* in lieu of(-) 22'-0" and, 9 l (b) the duration of 44 minutes should be changed to 8 hours. Based on the above, the total Arm price to complete this calculation is S 5,000.00 and will be completed by July 26,1995. Ifyou have any questions, please contact me at (212) 839-3633 Or Nandu Patankar at (212) 838-4011. l VeryTruly Y
.(g,* . 3 Project Manag 3
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- 4. I A
ESASC3 SERVICES INCCRPORATED 6, CHECKLIST FCR DESI2N VERIFICATION BY DES 17N REVIEW METHOD .i.j S. r s & xf 3a DOCUMENT NUMBER REYlSION DOCUMENT NUMBER REVISION ' 4 M s.-T9 - o o i 2 n >Ti ME - Tu -ooi i Y QUESTIONS QUESTIONS CALCS DWGS CALCS DWGS (SHALL BE ANSWERED BY THE (SHALL BE ANSWERED BY THE INDEPENDENT VERIFIER) INDEPENDENT VERIFIER)
- 1. NERE THE INPUTS CORRECTLY 11. RAVE ADEQUATE MAINTENANCE SELECTED AND INCORPORATED Q NA rEATURES AND REQUIREMENTS NA NA re?o ersicM? nrtM SPrefrfre,
- 2. ARE ASSUMPTIONS NECESSARY 12. ARE ACCESSIBILITY AND OTRER TO PERFORM TRE DESICr ACTIVITY ADEQUATELY DESCRIBED AND Nd DESIGN PROVISIONS ADEQUATE FOR PERFORMANCE OF NEEDED NA NA REASONABLE? NEERE NECESSARY g NA MAINTENANCE AND REPAIR?
ARE 78E ASSUMPTIONS IDENTIFIED 13. BAS ADEQUATE ACCESSIBILITY FOR SUBSEQUENT REVERITICATIONS SEEN PROVIDED TO PERFORM THE IN WHEN TAE DETAILED DESIGN SERVICE INSPECTION EXPECTED TO BE AN fvfTirs Apr COMPtrTr3? REQUIRED DURING THE PLANT LIFE 7
- 3. ARE THE APPROPRIATE QUALITY AND QUALITY ASSURANCE REQUIRE- f/ NA ,
NA NA PORLTC AND PLANr PERSONNrt?
- 4. ARE TEE APPLICABLE CODES,
- 15. ARE TRE ACCEPTANCE CRITERIA STANDARDS AND RECULATORY INCORPORATED IN TEE . DESIGN
, REQUIREMENTS INCLUDING ISSUE [jA NA DOCUMENTS SUrrre!ENT TO AtLON AND ADDENDA PROPERLY IDENTIFIED ANS Apr TertR escM. RoWTs. MET
- VERIFICATION TEAT DESIGN RQMNTS.
KAVE BEEN SATISFACTORILY
- 5. BAVE FEASIBILITY AND PRACT!
ACCOMPLIS 5EDP CALITY OF CONSTRUCTION BEEN R NA 16. RAVE ADEQUATE PREOPERATIONAL REVIEWED? AND SUBSEQUENT PERIODIC TEST NA NA 5a. dAS OPERATING EXPERIENCE "U""*** "cL" ^##" #"****L* NA NA SPECIFIED? ntEM CONSIDERED?
- 6. RAVE TBE DESICM INTERFACE 17. ARE ADEQUATE BANDLING, g
preefarMENTS artM SAffsrfrD? STORACE, CIZANINC AND SEIPPING NA NA 7 NAS AN APPROPRIATE DESIGN REQUIREMENTS SPECIFIED? 00 "# 18. ARE ADEQUATE IDENTIFICATION NA ummENu pEC!r!En R h PAprD o YM e
- 9. ARE TEE SPECIFIED PARTS, 19. ARE REQUIREMENTS FOR RECORD NA NA PREPARATION REVIEW, APPROVAL, NA NA EQUIPME4T AND PROCESSES SUITABLE roe ter pr00fprD APPttcAff0M? RETENTION, ETC., ADEQUATELY
- 10. ARE TBE SPECIFIED MATERIALS SPECIFIED?
COMPAT! ALE N/EACE OTAER AND N/ NA NA 20. mAvE Tar. IWoEPrunruf . _ _; DSCN. ENVRMNTL. CNDTNS. TO NEICR VERIFIER'S ColetENTS BEEN RESOLVED g NA THE MATER! At MILL BE EXPOSED? WITE TEE PREPARER? N w 7)'2.Gl 9S 9.hk 96 INDEPENDENT VERFIER SIGNATURE DATE
-. .. . . - . ... _ - - . - - - ~. -- - - - - - - - -- -
i FAX 110. 203 005 3273 P.02 JUL.-26-95 IED 20:22- IA101. EAR REl. DEllEDti!E E]Il Northeast b . <- Utultles Sysessa
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.s4m Memo July 26,1995
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NE-95 SAB-297 To: M. Chesids (MP2 Tech. Support) 7' ;f((f y. From:A.Gharakhanian 8[- (Ext. 5710)
.!)
Subject:
Review of RAYTHEON CW=*m For Vic: 2 CS-18.1 ^? 9 Per NGP 8.05 Referenose: ! RAYTHEON Calculation ME-TH-0GI, Rev.1," Valve 2CS 18.1 AaB Bonnet Fluid Temperature Following 1.OCA',07/264>5 Summary: ! Per your request the Thermal Hydraulics Analysis group has r,eir-;"rd its NGP 8.05 i review of the referenced calculation and concluded the resuka M be reasonable and i acceptable with the exception of the assumed elevation rJ the tnW water in the upstream piping. It is recommended that a minimum borate:1 water etwa:%n of -24.0 ft { to be maintained at all times during normal operation. Boese: , i The Rev.1 analysis was performed to extend the length of the orl0lnal analysis from 45 i minutes to C hours in order to accommodate the smal break LOCA ecenarios. The i analysis also lowered the assumed elevation of column of borated water in the j upstream piping from -22 to -26.5 ft. This chan0s in olevation was made to address the - water column evaporation in the containment during normal operation. Since -28.5 ft elevation corresponds to the highest elevation of the horizontal section of the upstream piping, this change could potentially increase the possibility of formation of thermai ' diffusive currents in the piping following a LOCA inside the containment. This phenomenon was not modeled in the RAYTHEON analysis. -l Recommendation: i in order to eliminate the possbility of formation of thermal diffusive currents in the i piping, it is recommended that a minimum water elevation of -24.0 ft be maintained in ! the upstream piping of subject valves at aX times durin0 normal operation i if you have further questions on this subject, please feel free to contact me at Berlin, ! ext. 5710 ' oc: M. L VanHaltem, M. S. Kai, N. K. Jain}}