ML17221A582
| ML17221A582 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 01/14/1988 |
| From: | Woody C FLORIDA POWER & LIGHT CO. |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| IEB-85-003, IEB-85-3, L-88-19, NUDOCS 8801200372 | |
| Download: ML17221A582 (32) | |
Text
REGULATORY 'NFORMATION DISTRIBUTIQN TEM (RlDS)
ACCESSI QN NBR: 8801200372 DQC. DATE: 87/01/14 NOTARIZED:
NQ FACIL: 50-335 St.
Lucie Planti Unit ii Florida Power 5 Light Co.
50-38'P St.
Lucie Planti
~ Unit 2I Florida Poeer 5 Light Co.
AUTH. NAME AUTHOR AFFILIATION WOODY> C. O.
Florida Poujer 5 Light Co.
RECIP. NAME RECIPIENT AFFILIATIQN GRACED J. N.
Region 2i Ofc o8 the Director
'v
SUBJECT:
Provide summary rept satisf ging requirments of Item F of. IE Bulletin 85-03'Motor-Operated Valve Common Mode Failures During Plant Transients Due to Improper Smitch Setting. "
Completion o{'each requirement addressed individually.
DISTRIBUTION CODE:
IEIID COPIES RECEIVED: LTR i ENCL
'f SIZE:
IR TITLE: Bulletin Response (50 DKT)
DOCKET 4 05000335 05000389 NOTES:
RECIPIENT ID CODE/NAME PD2-2 LA TOURIQNYi E COPIES LTTR ENCL 1
0 1
1 RECIPIENT ID CODE/NAME PD2-2 PD COPIES LTTR ENCL 1
1 INTERNAL: AEOD/DOA
- EQD/DSP/TPAB NRR/DEBT/ADS NRR/DOE*/EAH NRR/DREP/EPB EQ FIL 02 QN2 LE 01 EXTERNAL:
LPDR NSIC 1
1 1
1 1
1 1
ivv 1
1 1
1 1
1 AEOD/DSP NRR/DEBT/ADE
. NRR/DEST/MEB NRR/DOEA/QCB NRR/PMAS/ ILRB RES/DK/EIB NRC PDR TOTAL NUMBER QF CQP IES REQUIRED:
LTTR 19 ENCL 18
<M ~
1 I
P. O. BOX ' " 0, JUNO BEACH, FL 33408-0420 3ANUARY 1 d ioss L-88-19 Dr. Z. Nelson Grace Regional Administrator, Region II U. S. Nuclear Regulatory Commission 101 Marietta St.,
N.W., Suite 2900
- Atlanta, GA 30323
Dear Dr. Grace:
Re:
St. Lucie Units 1 and 2
Docket Nos.
50-335 and 50-389 IE Bulletin 85-03 The purpose of this letter is to provide a
summary report satisfying the requirements of Item f. of NRC IE Bulletin 85-03, "Motor-Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings."
The report provides (1) a verification of completion of the requested
- program, (2) a summary of the findings as to valve operability prior to any adjustments as a result of this
- bulletin, and (3) a summary of data in accordance with the NRC suggested Data Summary Format.
Completion of each specific requirement of IE Bulletin 85-03 is addressed individually.
Should there be questions, please contact us.
Very truly yours, c4'.
O..~ dy
<Execu@3.ve Vice President COW/MSD/gp Attachment cc:
Document Control Desk, USNRC Senior Resident Inspector, USNRC, St. Lucie Plant MSD/011.IEB 880i200372 880ii4 PDR ADOCK 05000335 8
PDR I I an;=PL Grouo co>>cavy
STATE OF FLORIDA
)
)
ss.
COUNTY OF PALMBEACH )
~i.li. ~
b i
ii di,d d
That he is Director Nuclear Licensin of Florida Power & Light Company, the Licensee herein; That he has executed the foregoing document; that the statements made in this document are true and correct to the best of his knowledge, information, and
- belief, and that he is authorized to execute the document on behalf of said Licensee.
J. K. H Subscribed nd sworn to before me this I
/V day o I
, l9~.
NOTARY PUBLIC, in and for the County of Palm Beach, State of Florida NOTARY PUBLIC STATE CF FLORTCA HY COHHISSION EXP SEPT 18~1999 BOSOEO THRU GENERAL IHS.
UNO.
My Commission expires:
Page 1 of 7
NRC IE BULLETIN NO. 85-03 MOTOR-OPERATED VALVE COMMON MODE FAILURES DURING PLANT TRANSIENTS DUE TO IMPROPER SMITCH SETTINGS ST-LUCXE UNITS 1
& 2
SUMMARY
REPORT This summary report is submitted to satisfy the requirements of Item f.
of NRC XE Bulletin 85-03.
This report provides (1) a verification of completion of the requested
- program, (2) a summary of the findings as to valve operability prior to any adjustments as a result of this
- bulletin, and (3) a summary of data in accordance with the NRC Suggested Data Summary Format.
Completion of each specific requirement of IE Bulletin 85-03 will be addressed individually.
Item a.
Item a. of NRC IE Bulletin 85-03 required that the design basis for the operation of each motor-operated valve in the high pressure coolant injection and emergency feedwater systems that are required to be tested for operational readiness in accordance with 10CFR50.55a(g) be reviewed and documented.
This documentation was to include the maximum differential pressure expected during both opening and closing the valve for both normal and abnormal events.
The motor-operated valve design basis information to satisfy Item a.
for St. Lucie Units 1 and 2 had been previously transmitted to the NRC via FPL letter L-86-204 dated May 15, 1986.
- Also, included in this
.transmittal was a
description of the proposed program and the associated schedule to complete Items.b., c.,
and d. of XE Bulletin 85-03.
Subsequent to the original FPL transmittal, the NRC submitted two Requests for Additional Information (RAI) concerning the proposed FPL program.
These two RAI's were formally addressed via FPL letters L 421 dated October 31, 1986 and L-87-353 dated August 21, 1987.
Item b.
Item b. of XE Bulletin 85-03 required that, correct switch settings be established for each motor-operated valve identified in Xtem a.
- Also, if a
valve was determined to be inoperable an appropriate justification for continued operation in accordance with the applicable technical specifications was to be prepared.
FPL letter L-86-204 dated May 15, 1986 originally scheduled the completion of Item b. for October 17, 1986.
- However, due to late valve vendor responses, FPL letter L-86-415 dated October 13, 1986 subsequently rescheduled the completion of Item b. to January 30, 1987.
Zn order to address Item b. of IE Bulletin 85-03, FPL first transmitted the maximum differential pressures calculated in Item a.
to the appropriate valve vendors.
Each valve vendor was requested to provide the following information associated with each valve:
a.
Stem thrust required for operation.
b.
Stem torque required for operation.
c ~
d.
e.f.
C Maximum allowable stem thrust.
Maximum allowable stem torque.
Recommended motor-operator control logic.
Recommended torque bypass switch settings.
Page 2 of 7 The information provided. by each valve vendor was then transmitted to Limitorque for evaluation of each valve actuator.
Limitorque provided the maximum thrust and torque capability of each actuator along with any recommended hardware changes.
Limitorque had identified one valve for St.
Lucie Unit 1, V-3654 (HPSI pump discharge header isolation) where the installed actuator was marginally sized.
- However, the existing valve and actuator data was reviewed by FPL and a safety evaluation was prepared to show that the valve was capable of performing its safety function.
In the long term, FPL is pursuing replacement of the existing valve actuator from the present, SMB-00 to an SMB-0 in accordance with the Limitorque recommendation.
A review of all the vendor supplied information was then performed by FPL to determine the correct motor-operated valve (MOV) switch settings.
While some of the MOV switch settings were adjusted, the overall MOV control logic requirements (limit switch to open,- torque switch to close, limit switch to close, etc.)
were not changed as a
result of IE Bulletin 85-03.
For simplicity, only one gate and globe
- valves, developed for butterfly Bulletin 85-03 gate and switch.
MOV switch setting policy was established for while a
separate switch setting policy was valves.
The switch setting policy for IE globe valves is as follows for each control a ~
Open Torque Switch All IE Bulletin 85-03 MOV's utilize limit switch to open control logic.
Therefore, the purpose of the open torque switch is to.
provide backup in case the open limit switch fails to actuate.
The open torque switch will provide protection to ensure that the allowable thrust ratings for both the valve and actuator are not exceeded if the valve backseats or if mechanical binding occurs while the valve is in mid-stroke.
The open torque switches were set utilizing MOVATS signature analysis equipment.
The stem thrust at the open torque switch trip was measured using standard MOVATS stem thrust measurement techniques.
A range of acceptable thrust values for the open torque switch has been developed for each MOV.
The minimum thrust required to open the valve against maximum differential pressure has been calculated by the appropriate valve vendor.
The maximum allowable thrust value is based upon the limiting component, either the valve or the actuator.
Again the valve vendor has determined the maximum allowable thrust for his valve while Limitorque has provided the maximum allowable thrust rating for the actuator.
Setting the open torque switch to trip at a value between the minimum and maximum allowable thrust values ensures both valve operability and eliminates the potential for overstressing either the valve or actuator components.
Note that the final target thrust values have considered published measurement equipment uncertainties.
Close Torque Switch Page 3 of 7 For those MOV's utilizing torque switch to close control logic, the close torque switch was again set utilizing MOVATS stem thrust measurement techniques.
A range of acceptable thrust values for the closing stroke has been developed for each MOV.
The minimum thrust value required to close the valve under. maximum differen-tial pressure conditions has been determined by the appropriate valve vendor.
The maximum allowable thrust values were again determined to ensure that neither the valve nor the actuator's allowable thrust rating is exceeded.
Setting the close torque switch to trip at a value between the minimum and maximum thrust values will ensure that leak-tight closure of the valve has been achieved and neither the valve nor actuator components are overstressed.
As for the open torque
- switch, the final target thrust values have considered published measurement equipment uncertainties.
Open Limit. Switch The open limit switches were set to trip the actuator at, a point which ensures the valve is fully open and to also prevent inadvertent backseating of the valve.
Due to the physical differences between the valves included in the IE Bulletin 85=03
- program, a specific setpoint for the open limit switches was difficult to establish.
However, if a valve did inadvertently backseat during opening due to contactor dropout time and/or
- inertia, MOVATS signature analysis techniques were utilized to ensure the maximum thrust limit of the valve and actuator was not exceeded.
Close Limit Switch For those MOV's utilizing limit switch to close control logic, in lieu of a torque switch, MOVATS stem thrust measurement techniques was again utilized to ensure that the thrust developed at limit switch trip fell within an acceptable thrust range.
This target thrust range was developed using the same methodology as for the close torque switch described
.above.
Verification of the thrust achieved during close limit switch trip again ensures that tight shut-off of the valve has been achieved and valve or actuator thrust ratings have not been exceeded.
Close-to-Open Torque Bypass Limit Switch The close-to-open torque bypass limit switch is utilized to prevent inadvertent open torque switch actuation during the high loading condition present when the valve disc is lifted from the seat.
The close-to-open bypass switch, if selected and set properly, will ensure that the valve will perform its intended safety function even if the open torque switch is improperly set.
Each valve vendor was contacted to provide recommendations for setting of the close-to-open torque bypass switch.
Although several ranges of acceptable switch settings were provided, it was desirable to select one bypass switch setting that conservatively enveloped those recommended.
Page 4 of 7 Therefore, the close-to-open torque bypass limit switch was set to open during 20-254 of the valve opening stroke.
Industry testing performed by MOVATS has shown that a 20-254 torque bypass switch setting ensures that the open torque switch is adequately byp'assed during the high loading conditions experienced under high differential pressure conditions for both gate and glove valves.
Note that a
20-254 close-to-open torque bypass switch setting could impact the closed position indicating lights.
Therefore, each Bulletin 85-03 MOV was reviewed to determine the impact of an increased bypass switch'etting on position indication.
As a
- result, all IE Bulletin 85-03 MOU's have been modified as necessary to include a four-rotor limit switch and wire the close-to-open torque bypass switch and closed indicating light on separate rotors.
Note that this method for setting the close-to-open torque bypass switch and closed indicating lights eliminates the inaccurate position indication condition identified in NRC IE Information Notice 86-29 and INPO SOER 86-2.
f.
Open-to-Close Torque Bypass Limit Switch High loading conditions are normally not experienced during %he initial portion of the valve closing stroke.
Therefore, no specific requirements are specified for the open-to-close torque bypass limit switch.
Normally, the open-to-close torque bypass switch shares the same rotor as the open limit switch and open indicating light.
As a result, this switch was set to actuate at the same point as the open limit switch.
g.
Open Indicating Light As stated above for item f., the open indicating light normally shares the same limit switch rotor as the open limit switch and open-to-.close torque bypass switch.
This switch was therefore set to actuate at the same point, as the open limit switch.
h.
Closed Indicating Light If the MOV utilizes limit switch to close control logic then the closed indicating light was set to actuate at the same point as the close limit switch.
If the MOU utilizes torque switch to close control logic, hardware modifications were required to wire the close-to-open torque bypass switch and closed indicating light on separate rotors.
For these cases the closed indicating light limit switch was set to actuate at approximately 2-5% of valve travel from the fully closed position.
Butterfly valves included in the scope of IE Bulletin 85-03 utilize the following switch setting policy.
The control logic for the butterfly
-valves utilizes a limit switch for both the opening and closing strokes.
Torque switches are utilized in the control circuit only as a
back-up to the limit switches to provide protection against mechanical binding.
Torque bypass switches are utilized to ensure the torque switches do not actuate during the initial phases of valve opening and closing.
Page 5 of 7 Since butterfly valves are rotary type valves, MOVATS equipment cannot be utilized to set the torque switches by measuring stem thrust.
The open and close torque switches are set to the maximum allowable setting specified by Limitorque.
This ensures that neither the actuator nor the valve will be overstressed in the event of limit switch failure.
All of the limit switches for the butterfly valves (including torque bypass
- switches, position limit
- switches, and position indication limit switches) are set in the same manner as for gate and globe valves specified above.
A document containing the sizing and selecting criteria for MOV thermal overload heaters was in place at St.
Lucie Units 1 and 2 prior to the issue of IE Bulletin 85-03.
This document was reviewed and contains the correct heater element sizes for all IE Bulletin 85-03 MOV's.
The controlled document containing all the above switch setting information was completed and issued on January 23, 1987.
Item c.
Item c. of ZE Bulletin 85-03 required that individual valve settings be
- changed, as appropriate, to those values established in Item b.
Item c.
also required that each valve be demonstrated to be operable by testing the valve at the maximum differential pressure determined in Item a.
with the exception that testing motor-operated valves under conditions simulating a break in the line containing the valve would not be required.
Justifications'ere to be provided for any cases where testing with the maximum differential pressure could not be practicably performed.
FPL had originally committed to complete Item c. of IE Bulletin 85-03 by November 14, 1987.
- However, due to the duration of the St.
Lucie Unit 2
Cycle 3/4 1987 refueling
- outage, FPL letter L-87-477 dated November 16, 1987 subsequently rescheduled the completion of Item c. to startup from the refueling outage.
Item c.
1E Bulletin 85-03 was completed for St. Lucie Units 1 and 2 on November 20, 1987.
In order to implement Item c. of IE Bulletin 85-03, a comprehensive MOV training program was first established.
Plant maintenance personnel received "hands-on" training on the design, operation, maintenance and troubleshooting of Limitorque actuators.
Next, electrical maintenance personnel were formally trained on the use of-the MOVATS 2100 MOV signature analysis system.
This training program was scheduled and completed prior to the start of the ZE Bulletin 85-03 test program.
The MOVATS 2100 System was utilized to implement all of the specified MOV switch settings for each IE Bulletin 85-03 valve.
Signature traces of spring pack displacement, limit switch and torque switch actuations, and motor current were obtained for each MOV to verify accurate limit switch settings.
The MOV torque switches were also set using MOVATS equipment to obtain the target thrusts determined in Item b.
~
~
Page 6 of 7 In order to accomplish the differential pressure testing requirements of Item c.,
FPL established the following program.
First, all IE Bulletin 85-03 MOV's were grouped to envelope all valve/actuator configurations and test conditions.
At least one valve out of each test group was then required to be differential pressure stroke tested.
MOVATS equipment was utilized to ensure that. the remaining valves in each test group developed more thrust at torque switch trip than the test valve.
The actual stroke testing was performed under dynamic conditions (differential pressure plus flow) utilizing existing process pumps.
In order to maximize the differential pressures obtained during stroke
- testing, plant refueling outage conditions were required.
Note that the proposed FPL testing program to satisfy Item c. of IE Bulletin 85-03 had been informally discussed with the NRC staff via telecon and deemed adequate.
The attached Suggested Data Summary Format table (Attachment 1) provides the results of the differential pressure stroke testing program.
Also included as notes to the table are the appropriate justifications for partial differential pressure testing.
Note that if test pressures in excess of 95% of the design differential pressure were obtained, no justification is deemed necessary.
All MOV's that were differential pressure stroke tested operated satisfactorily.
The valves were verified to fully open and close by both local observation and remote position indicating lights.
No MOV failures were experienced on either St. Lucie Unit 1 or 2.
Item f. of IE Bulletin 85-03 also required that a
summary of the findings as to valve operability prior to any MOV switch adjustments as a result of the bulletin be provided.
All IE Bulletin 85-03 MOV's at St. Lucie Units 1 and 2 met the operability requirements of Section XI of the ASME Code as required by plant technical specifications prior to the issue of the bulletin.
FPL developed what is considered a
conservative MOV switch setting policy for IE Bulletin 85-03 MOV's to further enhance valve operability.
As a result of this conservative MOV switch setting policy, several MOV switch settings were adjusted.
- However, these MOV switch adjustments should not be interpreted to mean that an MOV was inoperable prior to the implementation of the bulletin switch setting policy.
Full differential pressure testing of the MOV's prior to implementation of any Bulletin 85-03 switch adjustments is the only absolute method of determining whether a
valve is inoperable.
Full differential pressure testing was not performed at St. Lucie prior to any MOV switch adjustments as this was not a
requirement of the bulletin.
However, differential pressure stroke testing was performed after implementation of MOV switch adjustments in accordance with IE Bulletin 85-03.
Item d.
Page 7 of 7 Item d. of IE Bulletin 85-03 required that procedures be prepared or revised to ensure that correct switch settings are determined'nd maintained throughout the life of the plant.
Procedures for performing MOV testing on each bulletin valve have been developed.
All setpoints for 85-03 valves have been established and are contained in a controlled document.
To ensure that correct switch settings are maintained in the future following maintenance, existing maintenance procedures are being modified to require an electrical department retest evaluation when maintenance is performed on motor operated valves.
Additionally, an MCC load device has been purchased and is being evaluated for future use in determining the effects of maintenance on valve operability.
FPL will continue to evaluate industry methods for maintaining MOV operability and will modify existing methods when deemed beneficial.
VL/85-03 ~ RPT0003
J
ST.
LUCIE UNIT 1 HIGH PRESSURE SAFETY
'INJECTION SYSTEH Data Sugar Attachment 1
Page 1 of 19 Valsi Cenyeaeot 40.
gamtacbstor, age, Qadel.
Sike, Qstl@g V-3653 Velan Rate P-35036-6*
4N 9008 Valve Value ruler fsacliea
~fagtur@r, k4al ~
5htor m, outygt Spy~
(RRQ Limitorque HPSIP Discharge SHB-00-10 X-Connect 1800 rpm Oesiga Qasis h$
'lose lest it Close 1285 psi/
see v-3655 1285 psi Qsitch Settiags trier to A4jssteeats es o Iesult ef lvlletia Close fideal Seeitch
'ettiaos iw Io.
ayease te Qasll~
Close 2 1/4 /
V-3655 Velan Gate P-35036-6*
4N 90014 Limitorque SN-00-10 1800 re HPSIP Discharge X-Connect 1285 psi/
1260 psid/1260 psid 1/1 1285 psi 1260 psid/1260 psid (98X of design)
See Note 9
2 1/8 /
1 7/8 V-3654 Velan Rate P-350364*
6 9000 Limitorque SHB-00-25 1800 rpm HPSIP Discharge Header Isolation 1285 psi/
see Note 1
1285 psi 2/2 2 112 I 22 V-3656.
Velan
'ate P-35036-5*
6w 1500f Limitorque HPSIP Discharge SHB-0-40 Header Isolation 1800 rpm 1285 pSi/
1245 psid/
1285 psi 1245 psid (97'X of design) 2/2 2/2 Drawinn Nn
ST.
LOCIE ORBIT 1 HIGH PRESSURE SAFETY INJECTIN SYSTEH
~tt t Attachment 1
Page 2 of 19 Valve Cegyeaeat IS, QgmfiegLaver, Tge, ~+1, Slue, Gat4g Valve Valve radar fsssllos Ncaufacbarer, Muhl ~
5htor BQ, Ou~
(RN)
Oasiya Oasis kt Close Test ht lose Milch Settiwgs
~rior to Adjssteeats as a Iesolt of Qulletia Close jiaal Seeitch Settings ia aa spoase to Soll a/Close V-3660 Velan rate P-35036-10*
3N9M'imi torque HPSIP Recirculation 1285 psi(
see v"3659 SHB-00-7-1(2 toRN'285 psi 3600 rpm 1 1/2 /
1 1/2 2 1/4 /
2 1/4 V-3659 Velan Gate P-35036-1D*
3N 9008 LimitOrque HPSIP ReCirCulatiOn 1285 pSi/
1257 paid/
SHB-00-7-1/2 to RHT 1285 psi i257 paid 3600 rpm (987. of design) 1 1l2 I 2 2/ I 1/2 V-3662 Velan Gate P-35036-8*
4N 300'imitorque Supply from SHB-000-5 SOC HX 1800 rpm 246 psi(
See V"3663 246 psi 1 1/2 /
1 1/2 2/2 V-3663 Yelan Gate P-35036-8*
4N 300k Limitorque SHB-000-5 1800 rpm Supply from SDC HÃ 246 psi/
246 psi 222 psid/
222 psid (907. of design)
See Note 2
1 1l2 /
1 1/2 2 1/2 /
1 1/2 4 Arrow)nn
ST.
LUCIE UNIT 1 HICH PRESSURE SAFETY INJECTION SYSTEH Oata Summar'ttachment 1
page 3 of 19
/
CI posit IQ.
N@Qhi44tror e f~, ihdol, Sicko. Lsti@S Valve Maloo rator fact tioo Manufacturer,
- Bmhi, lhtor f4@,
@styuL 5yeed (QRQ Oesiya Sasis ht Close
'fest At Close Switch Settings Frier ta Mjsstaeats as a Result ot tulletia Close final Seeitch Settings ia Ie syoase to oil>>
Close HVC-3616 Velan Y Globe P-35036-4*
2N 15000
- HVC-3626 Velan Y Globe P-35036-4*
2" 15M'imitorque SHB-00-10 3600 rpm Limitorque SHB-00-10 3600 rpm HPSl Cold Leg Isolation HPSI Cold Leg Isolation 1282 psi/
see Hcv"3617 1282 psi 1282 Psi/
see Hcv 361.7 1282 psi 1 3/4 /
1 1/2 11/2/1 HVC-3636 Velan Y C~lobe P-35036-4*
2ll 1500$
HVC-3646 Velan Y Globe P-35036-4*
2N 15008 Limitorque SHB-00-10 3600 rpm Limitorque SNB-00-10 3600 rpm HPSI Cold Leg Isolation HPSI Cold Leg Isolation 1282 psi/
see Hcv-3617 1282 psi 1282 psi/
see Hcv-3617 1282 psi 2/2 1 1/2 /
1 1
ST.
LUCIE UNIT 1 HIGH PRESSURE SAFETY INJECTI0H SYSTEH Data Subpar Attachment 1
Page 4 of 19
@~lee Gg@eseat l9, Qacafacteter,
$ge, Qmhlr
$4e. Batiea Va4e Valve rater feectioa t4awtaetster,
- tbdsl, Lhter NN, Catgut
$yee8
$ 8$Q)
Oesigi Iasis at Close
- Test at lese
%<itch Settings i'rior to Aljustimeats as a Result of Sollot,ia Close jbaal Serltch Settings ia Ie spoase to Sell elC lose HVC-3617 Velan Y Globe P-35036-4*
2N 15000 Limitorque SHB-00-10 3&nn rpm HPSI Cold Leg Isolation 1282 psi/
1260 psid/
1282 psi 1260 paid (98K of design)
HVC-3627 Velan Y Globe P-3503&-4¹ 2N 15008 Limitorque SHB-00-10 3600 rpm HPSI Cold Leg Isolation Psi/
see Hcv-3617 1282 psi HUC-3637 Velan Y Globe P-3503&-4*
2" 1500'imitorque SHB-00-10 3&00 rpm HPSI Cold Leg Isol ati on 1282 psi/
see Hcv-3617 1282 psi HVC-3647 Velan Y Globe P-3503&-4*
24 1500iI Limitorque SHB-00-10 3600 rpm HPSI Cold Leq Isolation 1282 psi/
See HCV-3617 1282 psi 1/
1 1/8
- Dyawinq No.
ST.
LUCIE Ut)IT 1 HIGH PRESSURE SAFETY INECTIN SYSTEH
'ts Attachment'1 page 5 of 19
~R Caaye~t lb,
~ofhcer,
<gal}, Rdol, Qze, Cation'alve llalve ruler fcstaleo Naeufactaesr.
- RuAl, Rhter RR, Outputs Speed (QQ)
Qesiga Iasis ht Close lest ht Close Mitch Settings Prior to kljesteaats as a @esslt It Sslletta Close f ideal Sv!tc+
~ttiois ia Ie snoose to 5halli
. a/Close I-MV-07-1A Henry Pratt Butterfly t@K II 24" 1500 Limitorque SMB-00 1800 rpm RN Suction 16 psi/
16 psi 0 paid/
0 paid Static Test Only See Note 3
2/
1 1/2 3/3 I-HV-07-1B Henry Pratt Butterfly HHK II 24" l5DN
- Henry Prqtt Butterfly tNK II 24" 1508 Limitorque SMB-00 1800 rpm Limitorque SMB-00 1800 rpm RN Suction Containment Sump Suction 16 psi/
16 psi 44 psi 44 psi 0 paid/
0 paid Static Test Only See Note 3
0 paid/
0 paid Static Test Only See Note 4 2/2 2/2 3/3 3/3
-N-0 <<2B Henry Pratt butterfly OK II
)l4 1508 Limitorque SMB-00 1800 rpm Containment Sump Suction 44 psi/
44 psi 0 psfd/
0 paid Static Test Only See Note 4 2 1/2 /2 3/3
ST.
LUCIE UNIT 1 AUXILIARYFEEDHATER SYSTN e~es Attachment 1
Page 6 of 19 Valse Cegeae@t lQ.
~gacburer,
, ~l.
Qjro, SstSag Va)M Malee rater feaetiea
- faxterer,
~l, Rotor SN, eutyuh Speal (BR) basiga Basis 4t Close Test 4F Close Switch Settings fideal Witch 1rior to 44jestleats Settles ia Ic-os a Iesult ot Oolletio
.spoase to Sulloi a/Close a/Close I-NY-09-9 HKH Globe 70-28-2HO 4N 60OS I-HY-09-10 HKH Globe 70-28-2tS 4N 60OS Limitorque S~B-onn 1700 rpm Limitorque SHB-000 1700 rpm AFMP lA Discharge to SG 1A AFMP 1S Discharge to SG lA 1451 osi/
See I-MV-09-10 1451 psi 1451 psi/
1421 psid/
1451 Psi 1421 psid (98K of design) 3/3 3/3 2 3/10 /
2 1/2 /
2 I-HV-09-11 HKH Globe 70-28-2N 4N 6008 Limitoraue SHB-000 1900 rpm AFHP lC Discharge 1375 psi/
see I-Mv-09-12 to SG 1A 1375 psi 2/2 1 3/4 /
1 I-NY-09-12 NN Globe 70-28-2/6 4II 6000 Limitorque SMB-OOO.
1900 rpm AFHP 1C Oischarqe to SG 1B 1375 psi/
1375 psi 1131'paid/
3/3 1181 psid (82T / 867. of design)
See Note 5
2/2
ST.
LUCIE UNIT 1
AUXILIARYFEEONTER SYSTEM
~Dt h Attachment 1
Page 2 of 19 Valve Comet lG, gaasfacturer l~, ~~l.
See. Chtl Valve Valve rater'eactleo Naaufar.turer,
- Auhl, Lhter CPA,
&tous 5yed (CN)
.Iesigs
'asls hP Close lett hP Close Qeitch Settiags Prior to A4jvsteeots as a Result ot Sulletia Closo flnal Saritch Settings lo Ia
$$44$e to 844ll Close I-HV-09-13*
WKM Globe 2-1/2" 6Ons Limitorque SHB-00 120Q rpm AFNP 1A Discharge 1460 psi/
141Q psid/141Q psid 2 1/4 / 2
.to SG18 1460 psi 1422 paid/1422 paid (967.'and 927. of design)
See Note -9 2 3/4 /
2 IAV-09-14*
WKM Globe 2-1/2" 6004 Limitorque S%-00
'20Q rpm AFNP 18 Discharqe 1460 psi/
see i-Mv-Q9-13 to SG 1A 1460 psi 1 1/2 /
1 1/2 2 /
1 1/2 I-NV-08-13 Limitorque Rockwell SHB-ao UniValVe StOp 19oQ rpm 3624 HT 3N AFt)P 1C Steam Isolation 1085 psi/
9QQ psid/
1085 psi 9Q5 psid (837/837. of design)
See Note 6
2 1I2 I 2 1I2 2/2 I-HV-08-14 Limitorque Rockwell SN-00 UniValVe StOp 19QQ rpm
~
3624 HT 3N AFHP 1C Steam Isolation 1085 psi/
895 Psid/
1085 psi 895 psid (827. of design)
See Note 6
2 1/2 / 2 1/2 2/2
ST. LUCIE UNIT 1
AUXILIARYFEEONTER SYSTEN Attachment 1
page 8 of 19 Data Sugar Ilalee Cgyyeaaat IO, 5hauf oct@tet.
faye, Nahl.
Size, Istic@
I-HV-08-3 Schutte 5
Koerting Trip 8 Throttle 72-XE-3 4ll
'Malve Valve rabw'ellation NNu4cketer, l,
Rater SN, Ou~ Spea4 (am)
Limitorque AFHP lC Trip +
SHB-000 Throttle 1900 rpm Design Qasis ht Close l085 psi/
1085 psi fest af Close 890 paid/
890 paid (82K of design)
See Note 6
Niue Settidgs trier te Adjsstaelts as a Qesult of @slletia Close 2/3 final Qritch Settings ia Ne spoase to ull n/C lose 1 1I2 I 1 1I2
ST.
LUClE UNiT 2 HiGH PRESSURE SAFETY iHJECT1ON SYSTEH Data Seanar
'ttachment 1
Page 9 of 19 Valve Melee recto!'ac'ties les leo Basis kt Close feat 4P lese faith Settiags trior to kljusheaots as o Iesult ot oiletio Close fill Saoitch Settings ia syeaso to Ill Clos Cemy@saat lO,
- eebarer, lf~,~l, Sine, Saticon V-3654 westinghouse Gate 06000GN87S-GH07DAOS74 9000 Reuf actgr@r,
- kbCel, 5htor CR4, Outg@t $yee4 QGRQ Limitnrque Hot Leg injection SB-0-15 Orifice Bypass 3600 rpm 1285 Psi/
740 paid/
12&5 psi 725 psid (587, / 567. of design)
See Note 7
3/ N/A See Note 8 2 1/4 / N/A See Note 8
V-3656 westinghouse Gate 06NNP488S-GR)7DOOS74 6N I
1500" Limitorque S8-0-15 3600 rpm Hot Leg injection Orifice Bypass 1285 psi/
759 psid/
1285 psi 734 peid (597 / 577 of design)
See Note 7
2 3/4 / N/A See Note 8
2 1/10 I NIA See Note 8
V-3659 westinghouse Gate 03000G%7F-'817DQOS74 3N V-3660 westinghouse Gate 0300tiH87F-JB17D(NS74 3N 9008 Limitorque HPSlP Recirculation 1285 psi/
see y-3660 sa-0015 to RN 1285 psi 3600 rpm Limktorque HPSiP Recirculation 1285 psi/
1276 peid/
SS-00-15 1285 psi 1276 psid 3600 rpm (997. of design) 1 1/2 / N/A See Note 8 2/ N/A See Note 8 1 / N/A See Note 8
1 1/4 / N/A See,Note 8
ST.
LUCIE UNIT 2 HIGH PRESSURE SAFETY INECTION SYSTEM.
Data Surmar Attachment'1 Page 10 of 19
)give Ccyeeat lQ, Qgg@~actoter, Skim, Qstiaa Valve Valve ralor fmxtioo Namfacbarer, l,
Lhter 5M, m~ Speed (ewj Sesiga Qasis H'lose lesC ht Close S itch Setaiogs prior Lo A4jssteests as a IesulL eC Iolletio Close ri~l S itc sottise 5e 44 syoaso Lo Baht Close V-3550 Tarqet Rock Globe 75C023 3N 15004 V-3540 Target Rock Globe 75C003 3 II 15008 V-3551 Target Rock Globe 25C023 3'5008 V<<3523 Target Rock Globe 75C003 3N 15000
<<mitorque HPSI Hot Leg Injection 1800 rpm Limitorque HPSI Hot Leg Injection 1800 rpm HPSI Hot Leq sMB-0"25 Injection 1800 rpm L m torque HPSI Hot Leg Injection 1800 rpm 1273 psi/
See V-3551 1273 psi 1273 psi/
see v-3523 1273 psi 1273 psi/
1303 psi /
1273 psi 13 (102K of design) 1273 psi/
1303 paid/
1273 psi 1303 paid (102> of design) 2 1/4 / 2 1/4 2 1/4 / 2 1/4 1 1/4 /
1 1/4 3 1/2 /
2
/4 2 /
1 1/2 3/ 11/2 1 1/2 /
1 1/2
Sr. LVCIE tlNIT 2 HIGH PRESSURE SAFETY INECTION SYSTEH Ot S
K Attachment 1
Page ll of 19 Valve G~eeat ho,
~letterer, fge, Chchl, Shoo, Qnt4g Valve Valve rater fseciioe Naeufactumr,
- Rs4el, fhter CN, Cput $yaed (RPN)
OeSiga Qasis hP Close fest hP Close 9 itclr Settings trier to Adjsstaeats as a Gestalt of I4lletia Close fkaal Seektch Settiags ie k SPOaSe te Qsl Nr/Close I-NV-07-1A Henry Pratt Butterfly NHK II 24N 1508 Limitorque SHB-000-5 1800 rpm RMT Suction 1& psi/
16 psi 0 paid(
0 paid Static Test Only See Note 3
1 1/2 /
1 1/2 2 1/2 /
2 1/2 I-NV-07-1B Henry Pratt Butterfly NHK II 24" 150$
Limitorque SHB-000-5 1800 rpm RHT Suction 16 psi/
16 psi 0 paid/
0 psid Static Test Only See Note 3
1 1/2 / 2 21/2/2 1/2 I-HV-07-2A Henry Pratt Butterfly NK II 24"
~ 15OS Limitorque St<8-00-10 1800 rpm Containment Sump Suction 49 psi/
0 paid/
49 psi 0 psid Static Test Only See Note 4 1 1/2 /
1 1/2 3/3-I-HV-07-2B Henry Pratt Butterfly NHK II 244 1504 Limitorque SHB-00-10 1800 rpm.
Containment Sump Suction 49 psi/
49 psi 0 paid/
0 psid Static Test Only See Note 4 1 1/2 /
1 1/2 3/3
ST.
LUCIE UNIT 2 HIGH PRESSURE SAFETY INJECTION SYSTEH
~Dt S
Qg 404lW>ttp Page 12 of 19 Salsa Ce~eseat l9; gsmfac~r,
$61 ~ Lhuhl, See, natiog HCV-3616 Target Rock Globe 75-C-002 2"
1500it Valve Mhlve rdtof' c@ctlos RaiIufacbgor,
~l~
lhter RPQ, Out@A $yeed (ewij Limitorque HPSI Cold Leg SHB-00-10 Injection 1800 rpm Oesiga Iusis hP Close Test H'lose 1284 psi(
1302 paid/
1284 psi 1302 p<<d (1017. of design)
Scsitch Set tiaas Prier te l4justaeats ds a Result of lulletia Close 2/2 fioal Seritch Settings ia Io spoase to aural a/C lose 112 1
HCV-3626 Target Rock Globe 75-C-002 2N 15008 Limitorque HPSI Cold Leg SIS 00-10 Injection 1800
~pm 1284 PSi/
See HCV-3616 1284 PSi and HCV-3617 3/1 2/2 HCV-3617 Target Rock Globe 75-C-002 2N 15004 Limitorque HPSI Cold Leg SHB-00-10 Injection 1800 cpm l284 psi/
1268 psid/
2 3/4 / 2 1284 PSi 1263 psid (997. / 987. of design) 1 1/2 V-3627 Target Rock Globe 75-C-002
~
2'500it Limitorque HPSI Cold Leq
'S+-00-10 Injection 1800 rpm 1284 psi(
See HCV-3616 1284 pSi and HCV-3617 2/2 214 1
ST.
LUCIF UNIT 2 HIGH PRESSURE SAFETY IHJECTIOH SYSTEM
~lht S
Attachment 1
page 13 of 19 V~~vo CN;~t l5, gag@IIecterer, y~,
~~a.'4o.Bst4ee Valve Valve ratot' eer tioa RteQfactufet, Recall ~
Vhter 6N, I tgua Speal Oosiol Oasis kt Close lest kt Close
%>itch Settings trier to Mjssteowts as a Nosolt of ljullotia Close Iill S tach Settings le syoase to @u a/Close HCV-3636 Target Rack Glabe 75-C-002 2"
1500III' Limitarque HpSI Cold Leq sMB-00-10 Injection 1800 rpm 1283 psi/
see Hcv-3616 1283 pSi and HCV-3617 2I11/2 1 1/2 /
1 3/4 HCV-3637 Target Rock Cilobe 75-C-002 2ll 15008 HCV-3646 Target Rock Globe 75-C-002 2ll l5M0 Limitorque HPSI Cold Leq sMB-00"10 Injection 1800 rpm Limitorque HPSI Cold Leg SMB-00-10 Injection 1800 rpm 1284 Psi/
see Hcv-3616 1284 psi and Hcv-3617 1283 pSi/
See HCV-3616 1283 psi and HCV-3617 2/2 2/1 2 / 2 1/2 11/2/1 HCV-3647 Target Rock Globe 75-C-002 2N 15000 Limitorque HPSI Cold Leg sMB-00-10 Injection 1800 rpm 1284 psi/
see Hcv-3616 1284 psi and Hcv-3617 2 1/4 / 1 1/2 2 I 1 3/4
ST.
LUCIE UNIT 2 AUXILIARYFEEDMATER SYSTEH
~ll t
-S Attachment 1.,
page 14 of 19 Valve Caqgaaat lO, NacAacturer, 1', ~l,
$0ne, Iatday
~ Valve Valve rater faectioa Naaufacturer,
- Qxhl, Rober SN, Cute@ Spell
$GN)
Gas dgs lysis bt
~~Close lesC kf Clisa SsdLch SaLLdags trier Lo Mjustacats as a IesulL el tulletia Close fiaal WiLch Settings ia I ayoase te aaal lelCleso I-HU-09-9 MKH Globe 72-28-2HO 44 6nOS I-HV-09-10 HKH Globe 70-28-2HO 4N 6000 Limitorque SHB-000-5 1700 rpm Limitorque SHB-000-5 1700 rpm AFHP 2A Discharge 1375 psi/
See I-N-09-10 to SG 2A l375 psi AFNP 2B Discharge l375 osi/
1340 psid/
to SG 2A 1375 psi 1340 paid (977 of design) 1 1/2 / 2 2 1/2 /
1 1/2 11/2/2
/2 2/1 I-HU-09-ll MKH Globe 70-28-2HO 4N 600'imitorque SHB-000-5 1900 rpm AFHP 2C Discharge to SG 2A l332 psi/
1280 psid/
l332 psi 1280 paid (96'l. of design) 2/3 1 3/4/ 2 I-HV-09-l2 HKH Globe 70-28-2HO 4N 6008 Limitorque SHB-000-5 1900 rpm.
AFMP 2C to Discharqe l332 psi/
see I-Mv-09"11 to SG 2B l332 psi 1 /
1 1/2 1 /
1 1/4
ST. LUClE UNlT 2 AUXlLlARYFEED+TER QSTEH D~tS Attachment 1
Page 15 of 19 V@1+a Ce~sat IQ, Noae beer.
$yya, Shdel,
$)uo, QstSag
'Valve llalvs Igloo ~escllaa Naeufacterer,
- hhdol, Meter Ml, eutget Eye4 (QADI)
Oesiga L sis u Cliaa lest AP Close SsitcA Settials trice to Mjustaeits as o Iasult ot 5hlletia Close Fiaal Saeitch Settiags la ayease to u Close l-HY-09-13*
Limitorque Pacific SMC-4 Gate 17QQ rpm 650-7-VE-(80)-E-X 2-1/2" 6008 AFWP 2A Discharqe to SG 28 1385 psi/
1340 psid/1340 psid 2 1/2 / 2 1385 psi 1321 psid/1321 psid (97'K end 95T of design)
See Note 9
2 1/2 /
2 1/2 m
orque Pacific SHC-4 Gate 1700 rpm 650-7-ME-(&0)-E-X 2-1/2" 6008 to SG 2A sc arge PS See I-MV"09-13 1385 psi 2 1/2 / 2 1/2 2 1I2 /
2 1/2 I-0-08-12 Limitorque Pacific SHB-000-5 Gate 650-7-B&(80}-E 4N 6004 AFMP 2C Steam Isolatiw 1085 psi/
900 psid/
1085 psi 900 psid (83K of design)
See Note 6
2 /
1 1/2 31/2/3
/2 W
m torque Pacific SH8-OM-5 Rate 1900 rpm 650-7-HE-(80)-E 4II 60ae FHP 2C Stean isolation 085 psi/
1085 psi 900 psid/
900 psid (837. of design)
Seh Note 6
2I2 2/2
ST. LUClE UNlT 2 AUXlLIARYFEEOL/ATER SYSTEH O~CS Page 16 of 19 9+a+eo
~exeat lO.
~<fgc~~r, f~, Qxhl, Slee, lative Valve Valve rater fmetieo Neaufacbeer,
- Radel, thtor NN, Qutgmt %peed (QQ)
Ossigo Sasis hF Close
'fest kt Closo Qeitcl Settiags Prier to Mjusteeats as a lesult of Sulletia Close fioal Switch Settings ia Re sponse to lull a/C lose l-NV-08-3 Limitorque Terry Turbine SHB-000 Trip and Throttle 1900 rpm HP-1355*
4N 9004 AFuP 2C Trip 8 Throttle 1085 psi/
1085 psi 907 psid/
907 psid (84K of design)
See Note 6
3/3 3/3
Attachment 1
Page 17 of 19 ST.
LUCZE UNITS 1 AND 2 NRC IE BULLETIN NO ~ 85-03
SUMMARY
B 1.
As stated in the summary report, the SMB-00 actuator for valve V-3654 (HPSI pump discharge headex'solation) was identified by Limitorque as being marginally sized.
A safety evaluation.was prepared by FP&L which concluded the valve would still be capable of performing its safety function.
The original FP&L approach to satisfy
~the differential pressuxe testing requirements for valve V-3654 was to upgrade the existing valve actuator from an SMB-00 to an SMB-0 prior to the FPL commitment date to complete Item C of the bulletin.
Credit will then be taken for the differential pressure testing performed on a
similar valve, V-3656 (HPSZ pump discharge header isolation).
Note that both V-3654 and V-3656 are 6>>
gate valves manufactured by Velan and are xequired to open and close against a
design basis differential pressure of 1285 psid.
Valve stem thrust and torque requirements are identical.
To date, a proposal has been received from Limitoxque for the replacement SMB-0 actuator.
- However, the valve manufacturex,
- Velan, has informed FP&L that hardware modifications would be necessary for the valve to accommodate the larger actuator.
A formal proposal has not yet been received from the valve vendor, Velan.
Zt is FP&L's intent. at this time to modify valve V-3654 and upgrade the actuator during the summer 1988 St.
Lucie Unit 1
Cycle 8/9 refueling outage.
Credit would be taken at that time for the differential pressure stroke testing performed on valve V-3656 2 ~
3 ~
The differential test pressure of 222 psid (904 of the design value of 246 psid) for valve V-3663 is the highest attainable pressure within the existing pump and piping system.
Duxing testing an upstream pressure of 242 psig was recorded while a static head, of 20 psig existed on the downstream side of valve V-3663.
This downstream static head can only be eliminated if a pipe break downstream of valve V-3663 is simulated.
Item c.
of IE Bulletin 85-03 does not require valve testing under conditions simulating a pipe break.
Valves I-MV-07-1A and I-MV-07-1B are the refueling water tank (RWT) isolation valves.
The valves are 24" Henry Pratt butterfly valves.
The piping and pump arrangement at St.
Lucie is such that static differential pressure testing is only possible if the downstream piping is empty or a pipe break is simulated.
It would not be
~
~
p gg I1 4 ~
5.
6.
Attachment 1
Page 18 of 19
-practical to drain the downstream portion of piping to facilitate testing due to the large volume of water contained.
Also.,
as stated above in Note 2, IE Bulletin 85-03 does not require valve testing under conditions simulating a pipe break.
These valves also have a
very low design basis differential pressure (16 psid) as compared to the majority of IE Bulletin 85-03 MOV's.
- However, a very conservative switch setting policy was established for these valves similar to the high differential pressure MOV's to ensure operability.
Torque switches are utilized in the control circuit only as backup to the limit switches for equipment protection purposes.
Additionally, the torque switches have been set at the maximum allowable value specified by Limitorque to prevent inadvertent actuation.
Valves I-MV-07-2A and I-MV-07-'2B are the containment sump isolation valves.
The valves are 24" Henry Pratt butterfly valves and have a
very low design basis differential pressure (44 psid for St. Lucie Unit 1 and 49 psid for St.
Lucie Unit 2) as compared to the majority of IE Bulletin 85-03 MOV's.
The design basis differential pressure can only exist when there is water in the containment
- sump, and containment is pressurized.
These conditions are obviously not practical to simulate.
Additionally, a very conservative MOV switch setting policy identical to that for I-MV-07-1A and I-MV-07-1B (see Note 3) was established to ensure valve operability.
I-MV-09-12 is the 1C turbine driven auxiliary feedwater (AFW) pump discharge MOV to the 1B steam generator.
A minimum steam pressure of 200 psig was established in the 1B steam generator in order to operate the 1C turbine driven AFW pump.
This 200 psig pressure would therefore also exist downstream of I-MV-09-12 during stroke testing.
This downstream pressure could only be eliminated if a pipe break was simulated.
As stated previously, IE Bulletin 85-03 does not require valve testing under conditions simulating a pipe break.
The test differential pressure indicated represents the maximum steam pressure achievable during hot standby conditions.
Steam pressures in excess of this value can only be achieved by placing the plant in an abnormal condition.
7 ~
A non-isolable orificed bypass line exists around valves V-3654 and V-3656 (see Attachment 2).
As
- such, a
minimum downstream pressure is present even when valves V-3654 or V-3656 are closed.
The design basis differential pressure can therefore only exist. if a pipe
Attachment 1
Page 19 of 19 break is simulated either in the.orificed bypass line or directly downstream of the MOV.
As stated previously IE Bulletin 85-03 does not require valve testing under conditions simulating a pipe break.
8.
These valves utilize limit switch to close control logic.
As such, no close torque switch exists in the control circuitry.
9.
This valve can see flow and a corresponding differential pressure in both directions.
As such, the valve was tested with flow and differential pressure acting in both directions.
MN/DATA-SUM.RPT0001
Attachment 2
Page 1 of 1
St. Lucie Unit 2 HPSlS Schematic HPS?P Recirc.
To RMST HVC 36i6 To Cold Leg fry Refueling Mater Storage Tank V 3659 V 3656 HVC 3617
'W<7-ia
>-HV<7-2a I%<7-ih HVC 3626 HVC 3627 To Cold Leg Frea Cont.
Suey 1&47-28 HVC 3637 To Cold Leg V 3551-V 3523 V 3%0 To Cold Leg To Mot Leg To Mot Leg
re, ~
'~~
~
I l