ML20210B005

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Provides Estimation of Main Steam Electromatic Relief Valve Operations at Operating Conditions for Listed Facilities,Per 730718 Request.Histories of Relief Valve Operation at Pressure & Temp & Related Info Encl
ML20210B005
Person / Time
Site: Millstone, Nine Mile Point, Oyster Creek, Pilgrim, Vermont Yankee, 05000000
Issue date: 07/31/1973
From: Dance H
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To: Bryan S
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20209J032 List:
References
FOIA-87-40 NUDOCS 8705050211
Download: ML20210B005 (13)
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  • 1 ATOMIC ENERGY COMMISSION ,,

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) DIRECTORATE OF REGULATORY OPERATIONS REGION lll */

s e % Pas o' 799 ROOSEVELT ROAD pag GLEN ELLYN. ILLINOIS 6o137 (312) 458-2840 July 31, 1973 S. Bryan, Senior Reactor Engineer, Field Support and Enforcement Branch Directorate of Regulatory Operations, Headquarters RU: Gaston Fiore111, Chief, Reactor Operations Branch Directorate of Regulatory Operations, Region III ELECTROMATIC RELIEF VALVE OPERATIONS Per your telephone request of July 18, 1973, an estimate of main steam electromatic relief valve operations at operating conditions was obtained from stations shown below. Preliminary summary was provided to you in a telephone conversation July 23, 1973. Monticello actuations were revised downward to eliminate tests at ambient pressure.

Valve Actuation Breakdown Total Valve Actuations Testing Reseating Operational Dresden 2 30 28 -

2 Dresden 3 6 5 -

1 Monticello 62 15 -

47 Quad Cities 1 30 6 3 20 Quad Cities 2 66 36 7 23

.0 W H."C. Dance Senior Reactor Inspector BWR Operations Section 8705050211 870428 PDR FOIA THOMAS 87-40 PDR

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. SUlUtARY OF RELIEF VALVE OPERATiou AT QLHPS The following is the summary of relief valve operations (fi..nually or autcsneticcliv}

for both units"in response to AEC's request. This sun.1ary docs not include valve operations in pre-ops, logic tests, or cny relief volve operation ,with reactors at pressures below 100 lbs. This summary is based on documented evidence end invali-

. dates all previously given figures which were mainly based on educated guess.

1; D 2-7 3 - 1 (Unit 2) 1-3-73 HSIV CLOSURE A: 2 Times 8: 1 Time C: 1 Time' E: 1 Time SUDT01 AL-1: Ej'irm. .

2. 3-4-2-73-6 (Unit 2) 1-13-73 GEli TRIP / LOSS CF AUX.

A: 3 Times .

SUBTOTAL-2: 3 Tirey_ ,

3. D-4-2-73-9 (Unit 2) 1-20-73 RELIEF Fall.URE

. A: 2 Times 3 B: 2 Times C: 2 Tim 2s D: 1 Time E: 2 Times SUDTOYAL-3: (

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4. D-4-2-73-32 (Unit 2) 6-7-73 FEED UATER REG. VLV.

AIR LiliE Link.

A: 3 Times C: 1 Time E: 2 Times SUDTOTAL-4: 6 Tir-e.

5 STI -26 (Unit 2) 5-28-72--6-6-72 RELIEF VALVE TEST A: 1 Time B: 1 Time l , C: 1 Time l

i D: 1 Time E: 1 Time SUDRITAL-5: 3 Tinw

6. SURVEILLANCE (Unit 2) 4-30-73 (FOLLO'illNG li3DIFICATION)

A: 1 Time B: 1 Time C: 1 Time D: 1 Time E: 1 Time SUDTOTAL-6: 3 Tiras S

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7. 'STI 98 Ass (Unit 2) 10- 19A72 -- 10-21 -72 SFECIAL REllEF TEST l

A 2 Times

  • ! D: 6 Times
,g C: 1 Time D: 1 Time f ,E : 6 Times ' '.

/ SUBTOTAL-7: 16 Tim _S, t

./ 8. STI 98 (Unit 2) 6-19-72 TORUS PRESS. 1! AVE TEST

/ A: 8 Times i

B: 7 Times C: 7 Tices D: 4 Times E: 3 Times SUBTOTAL-8: 20 Tines

9. STI 26 (Onit1) 4-21-72 REllEF VALVE TEST A: 1 Time 0: 1 Time C: 1 Time 0:

1 Time E: 1 Time SUBTOTAL-9: 3 Tina 3

10. SURVEILLn!'CE TEST (Unit 1) 5-8-73 (AFTER l'UDIF ICA~il0N)

A: 1 Time B: 1 Time C: 1 Time 0: 1 Time E: 1 Time SUBTOTAL-10: 5 TIEP.E

11. STI 31 (Unit 1) 7-2-77 LOSS OF AUX.

A: 20 Times SUBTOTAL-il: 20 Tinar.

' SUM TOTAL UillT - 1 _10_ ,

U!41T - 2 78 _

DDTH IG2 .l.21 SUM TOTAL FOR EACll VALVE:

UNIT-1 UNIT-?

A: 22 A: 22 D: 2 B: JR C: 2 C: 14 D: 2 D: ,8 ,

E: 2 E: 16 30 78 Prepared by,

, K. Salchl 8-1-73 E

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Facility: Millstone I (Millstone Point Company)

Source of Information: Jim Ferland, Assistant Plant Superintendent Layout of Relief Valves: Each of three relief valves discharges through an individual pipe into the torus.

History of Relief Valve Operations at Pressure and Temperature (18 events involving 40 cycles of valves to July 20, 1973)

Date Reason Valve: "A" "B" "C" 11/25/70 Test (one at a time) 1 1 1 12/03/70 Test (one at a time) 2 1 1 12/04/70 S.U. Test (three at once) 1 2 1 i 1/10/71 S.U. Test MSIV closure (2 at once) 1 1 0 j 2/14/71 Testing & Load Rejection (one at a time) 2

' 1 1 2/16/71 Test 0 0 1 2/18/71 Testing & Load Rejection (one at a time) 1 0 1 3/28/71 Test 0 1 0 5/12/71 Test -

1 0 0 1 5/31/71 Test 0 0 2 6/11/71 Test (one at a time) 1 0 1 6/29/71 Test 0 0 2 9/06/71 Test 0 0 1 9/09/71 Failure of Pressure Regulator 1 0 0 3

9/29/71 Test (one at a time) 0 1 2 10/10/71 Failure of Pressure Regulator 0 1 0 10/25/71 Test (one at a time) 1 1 1 3/07/73 .

Test (one at a time) 1 1 1 e

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Facility:

Vermont Yankee (Vermont Atomic Electric Co.)

u Note: Torus designed for 183 cycles per year for 40 ye'rs a (GE basis).

Source of Information: Bradford Riley, Plant Superintendent Layout of Valves: Each valve has an individual ramshead discharge point in the torus.

History of Relief Valve Operations at Pressure and Temperature (6 events involving about 14 cycles of valves to July 19, 1973 - estimated

  • 257. error in number of cycles) 9/26/72 Manually opened each of 4 relief valves (startup test) at 207. power.

11/17/72 Manually operated 2 valves one at a time to relieve '

after MSIV closure occurring during shutdown ac-companying auxiliary transformer fire.

12/12/72 Manually opened one valve ("B") twice to relieve pressure. (No estimate of giuration.)

12/02/72 Automatic operation of "A", "C" and "D" valves simultaneously (and one safety valve opened temporarily) from 637. power with loss of

  • normal power due to loss of startup trans-former. (No manual operation.)

1/17/73 Manual operation of "B" and' "D" one at a time -

to relieve pressure.

7/08/73 Manual operation "A" relief valve to relieve pressure.

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1 6 4 Fccility: Pilgrim (Boston Edison Co.)

Source of Information: Grant Baston Layout of Relief Valves: Each relief valve has individual tail-pipe to torus. (Of four steam lives, 4 relief valves are on three lines.)

History of Relief Valve Operations at Pressure and Temperature (13 events involving about 57 cycles of values to July 19, 1973) 7/21/72 Manually tested each of 4 relief valves for 1-5 seconds one at a time.

7/23/72 Manually operated one relief valve to relieve pressure '~

for 1-5 seconds.

9/16/72 Manually tested one relief valve (which had malfunctioned) for 1-5 seconds.

9/24/72 Manual operation of 2 or 3 valves to relieve pressure -

, total four times, total about a minute. (one valve at a time.

10/03/72 Manually tested one at a tLae 2 valves for about 15

. seconds each and 2 valves for about 20 seconds each.

10/26/72 Manually opened one valve at a time to relieve pressure,

, total of four times, about 20 seconds each, except that i last valve ("C") stuck open.

11/16/72 -

Manually tested one valve at a time each of 4 valves to determine capacity, aboct 10 seconds each.

j 11/29/72 Automatic opening two and then one relief valve about 5 seconds each after MSIV closure. (Then safety valve opened temporarily.)

Then three manual relief valve operation of about 30 seconds each were done one valve at a time.

12/30/72 About 8 manual operations of relief valves one at a time to relieve pressure (20-30 seconds each). (In hot standby after scram.)

1/01/73 D" relief valve failed to open on startup at about 940 lbs. and blev down to 600 lbs. before resetting (estimated about 2 minutes).

1/02/73 Manually tested replacement "D" valve for about 5 seconds.

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Pilgrim - Pega 2 Jan & Feb'73 About six operations of B, C and D valves in attempts to seat the valves, about 5 seconds open each try.

3/06/73 About 13 valve operations following MSIV closure (estimated at 3 automatic and 10 manual of 5 seconds duration, respectively). (Manual operation was one at a time, automatic was not noted.)

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Facility: Oyster Creek (Jersey Central Power & Light Co.)

Source'of Information: Joe Carroll, Plant Superintendent Layout of Relief Valves: ; on one side of pressure vessel discharge into one downcomer 2 on the other side of pressure vessel dis-charge into one downcomer History of Relief Valve Operations at Pressure and Temperature (9 events involving about 36 cycles of valves to July 19,

. 1973) 12/25/70 At least one relief valve opene'd for an estimated 3 to 5 seconds following a stop valve closure.

9/26/71 Manually tested (opened) each of 4 (at that time) relief valves for 3-5 seconds following an outage, one valve at a time.

11/10/71 Manually tested (opened) the fifth or #E (newly in-stalled) relief valve for 3-5 seconds.

f 4/13/72 All 5 relief valves (assumed) opened after a turbine trip and reactor scram. EstLnated 3-5 seconds open all at the same time.

12/29/72 All 5 relief valves (assumed) opened. Estimated 3-5 4

seconds open all at the same time, and the "D" valve stuck open and blew down for about two hours.

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1/9/73 Manually tested all 5 relief valves. Estimated 3-5 seconds open one at a thme.

4/12/73 Manually tested 5 relief valves. One failed to open

('1") . Four valves were opened for 3-5 seconds one ,

at a time.

4 6/04/73 Manually tested 5 relief valves. Estimated 3-5 seconds open one at a time 6/30/73 All 5 relief valves (assumed) opened after a turbine trip and stop valve closure. Estimated 3-5 seconds open all at one time.

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  • Fccility: Nina Mile Point I (Nirgars Mohcwk PowIr Corp.)

Source of Information: Tom Perkins, Plant Superintendent Valve Layout: Each of six relief valves discharges through an individual pipe into the torus.

History of Relief Valve Tests at Pressure and Temperature. (Test on 9 dates involving 41 cycles of valves to July 20, 1973.)

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NIF' MIT2 POINT I *

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. Valve Cycles & Estimated Duration ,

D7tn Reasor, No. 111 No. 112 No. 113 No. 121 No. 122 No. 123 10/19/69 S.U. Test (Manual oper- 1 (2 sec.) 1 (5 min.) 3 (3 sec.) 1 (2 sec.) 1 (2 sec.) 1 (2 sec.)

ation, one at a time.)

11/01/69 same 0 1 (2 sec.) 1 (2 sec.) 1 (2 sec.) 1 (2 sec.) 1 (2 sec.)

11/01/69 same . 0 0 0 1 (2 sec.) 'l (2 sec.) 1 (2 sec.)

11/02/69 same 0 O O 1 (2 sec.) 0 -

0 5/26/71 Routine Test (Manual Oper- 2 (2 sec. 1 (4 sec.) 1 (3 sec.) 1 (2 sec.)- 1 (1 sec.) 1 (1 sec.)

ation,c one at a time.) ea.)

6/07/72 same 1 (4 sec.) 0 0 -

1 (4 se- ) 1 (2 sec.) 0 6/08/72 same 0 1 (1 sec.) 1 (1 sec.) 0 0 0 2 (2 sec.)

6/14/72 same 0 2 (1 sec. 0 0 0 0

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'6/13/73 same ,

1 (1.7 sec.) 1.(1.4 sec.) 1 (45 min.*) 1 (1.0 sec.) 1 (1.4 sec.) 1 (1.2 sec.)

6/14/73 same 0 0 3** (2 sec. 0 0 0 ea.)

12/31/71 Automatic Operation 1 (4 sec.) 1 (3.5 sec.) 1 (1.4 sec.) 1 (4 sec.) 1 (4 sec.) 0-2/28/72 same 1 (2 sec.) 0 1 (2 sec.) 1 (2 sec.) 0 1 (2 sec.)

1 (3 sec.) 0 1 (3 sec.) 1 (3 sec.) 0 1 (3 sec.)

11/19/72 same 1 (4 sec.) 0 0 1 (4 sec.) 0 0 -

2/09/73 same 1 (1 sec.) 0 1 (1 sec.) 1 (1 sec.) 0 1 (1 sec.)

4/14/73 same 1 (4 sec.) 1 (4 sec.) 0 1 (4 sec.) 1 (4 sec.) O' 7/08/73 same 1 (3 sec.) 1 (3 sec.) 0 1 (3 sec.) 1 (3 sec.) 0 1.(6 sec.) 1 (6 sec.) 0 1 (6 sec.) 1 (6 sec.) 0

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e stuck open when tested **after valve was repaired a

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NEMO ROUTE SLIP _

5** =' tout taa- S or coccu"*aa- For act'oa-r rm AEC-95 8 Rev. Mar 14.1947) A EC 410240 i Net. s e ree w ra For stratu re. For saforastica.

  • bNam. ar a watt) Inff8ALS REMAMS OPERATION OF AUTO'IATIC FRESSURE RELIEF SYSTEM AT BWR D. L. Ziemann, L FACILITIES oAn In response to a verbal request from John Riesland, Regulatorv Ooerations has made telechone incuiries nL to m cn. .no on.o n iiALs RuAAu present generation operating BWR facilities in order to obtain information en the number of tires the relief valves nave been operated (either real or test) oAn at operating temperature and pressure conditions. The results of these inquiries are provided as enclosures to this memo.

To (Name and uniu MTIALS A WAAM cc: D. Skovholt, L While the extent of data obtained varies from one faci:

gg' to another, I believe the specific information request (

H. Thornburg, R0 cAn by Mr. Riesland is included in the enclosures. If vou.-

R. Mc,Dermott, R0 desire further information, please let me know.

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Enclosures:

1. Memo from Dance to Bryan, dtd. 7/31/73

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2. History of Relief Valve Operations -

E J. G..Keppler, R0 Millstone 1

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3. History of Relief Valve Operations- V.Y.
,fSJN,p,,s 4. History of Relief Valve Operations-Pilgric
5. History of Relief Valve Operations-Ovste_r_.

PHONE No. dan 6. History of Relief Valve Operations-9-Mile 7421 8/9/73 U$( 01 tR $10E FOR ACCITIC*eAL REMARM CPO r t ri 0 - 4 85 4'*

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.. u DRATT f2 dochet 1.'o. SU-2uS JIRiesla..J . sj i 10/3/72 t

Commonwealth Edison Company ATTN: Mr. Byron Lee, Jr.

' Assistant to the President Post Office Box 767 Chicago, Illinois 60690 Gentlemen .

1 Your letter datca Junc 7. 1972, describcd tne failurc of a number i

of ECCS suction header to suppression chamber hangers on Quad Citico Unit 2. 'Ih t re; ort dic t.ot provide adequate infornaticr. for our revio..

.iegula tor /- Operationu. however. cdvit.ec us that Courtonsecita Ecito:.

I Couinnf had agreed to huumit a ro;. ort to t;te Dirt etorate of Licer. sinc durina, t..c latter part of Augue.t 1>71.

We have not yet reccivee t..c I

t rcgort.

a fcilure of the ECCs suctiot. header uan3 cts was not u,. tic 1 rated I

c..6 . ca nc,t a.nal; m.; it. tat Safer.y t.nalysis Ee; ort. Cens eque..;1,.

tue fcilure i- conaldered by tue CouLission to Dc ar. carcvie. sed u.fctj

.usaticn. It. cccordance witn is CTR 3d.39. you nre required to submit an at:encmant to tae iSAR that described and evulunten t.ie ccrecqu;nces of a f ailure to tue ECCS suction header during norual or accident i

conditions and indicate the corrective measures, f any . hat arc i

required to eliminate deficiencies. Your submittal also should propose suryc111ance re<luirements for the ECCS suctiot header for incorporation in tac Technical Specifications.

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Cc:monucalth Edison Comi any 2 You are requested to provide the above information for Cotunission authorization to modify the ECCS suction header hangers with your schedule for completing the modification within 30 days.

Sincerely, Donald J. Skovholt Assistant Director for Operating Reactors virectorate of Licensing cc. . .r . C.iaries maituore President and Cuaircan Iowa -Illi:.ois uns a:.c ~

Liectric Companj idd East Second Avenut uavenport, Iowa 52601 J u ha 'n' . nowu, Esquire Isann iacolnat benle Counselors at Las Unc firs: 1;atici,a1 Plaza Lc.ic .:r.o . Illinoic vot7s t

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