ML17309A405
| ML17309A405 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 07/08/1988 |
| From: | Rich Smith ROCHESTER GAS & ELECTRIC CORP. |
| To: | Stahle C NRC, NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| Shared Package | |
| ML17251A167 | List: |
| References | |
| IEB-85-003, IEB-85-3, NUDOCS 8807130068 | |
| Download: ML17309A405 (59) | |
Text
. AC,CELERATED DIS~UBUT10N DPgggS g REGULATORY INFORMATION DISTRIBUTIO SYSTEM (RIDS)
D 05000244 8
ACCESS10N NBR:8807130068 DOC.DATE: 88/07/08 NOTARIZED: NO DOCKET FACIL:50-244'obert Emmet Ginna Nuclear Plant, Unit 1, Rochester G
05000244 AUTH.NAME AUTHOR AFFILIATION SMITH,R. E.
Rochester Gas
& Electric Corp.
RECIP.NAME
, RECIPIENT AFFILIATION STAHLE,C.
NRC No Detailed AffiliationGiven
SUBJECT:
Forwards summary rept required by IE Bulletin 85-003 re properly set switch settings on motor-operated valves.
DISTRIBUTION CODE: IEllD COPIES RECEIVED:LTR
(
ENCL J SIZE:
TITLE: Bulletin Response (50 DKT)
NOTES:License Exp date in accordance with 10CFR2,2.109(9/19/72).
RECIPIENT ID CODE/NAME PD1-3 LA STAHLE,C INTERNAL: AEOD/DOA AEOD/DSP/TPAB NRR/DEST/ADE 8H NRR/DEST/MEB 9H, NRR/DOEA/GCB 11 NR LRB12 EG I
02 FILE 01 COPIES LTTR ENCL 1
0 1
1 RECIPIENT ID CODE/NAME PD1-3 PD AEOD/DSP NRR RIVENBARKgG NRR/DEST/ADS 7E NRR/DOEA/EAB 11 NRR/DREP/EPB 10 NUDOCS-ABSTRACT RES/DE/EIB COPIES LTTR ENCL 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 I
h EXTERNAL: LPDR NSIC NRC PDR 1
1 TOTAL NUMBER OF COPIES REQUIRED:
LTTR 21 ENCL 20
vf igtN VA'4 ROCHESTER GAS AND ELECTRIC CORPORATION
~ 89 EAST AVENUE. ROCHESTER, N Y. 14649-0001 July 8, 1988
'tf4.gS ~Or C
ABACA COOC 7ie 546.2700 U.S. Nuclear Regulatory Commission Document Control Desk Attn:
Mr. Carl Stahle PWR Project Directorate No.
1 Washington, D.C.
20555
Subject:
IE Bulletin 85-03 Report Summarizing Program Completion R.E.
Ginna Nuclear Power Plant Docket No. 50-244
Dear Mr. Stahle:
Attached is the summary report required by IE Bulletin 85-03 dated November 15, 1985 which requested that licensees develop and implement a
program to ensure that switch settings on motor-operated valves in the high pressure coolant injection and emergency feedwater systems are set properly.
This fulfills the requirements of IEB 85-03.
Very truly yours obe mit Vice President Production and Engineering Attachment xc:
xc:
U.S. Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406 Ginna Senior Resident Inspector 8807130068 880708 PDR ADOCK 05000244 8
PNU
ATTACHMENT 1 REPORT ON COMPLETION OF PROGRAM IE BULLETIN 85-03 INTRODUCTION On November 15,
- 1985, the NRC Office of Inspection and Enforcement issued IE Bulletin 85-03:
"Motor-Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings".
The purpose of the Bulletin was to request licensees to develop and implement a program to ensure that switch settings on motor-operated. valves in the high pressure coolant injection and emergency feedwater systems are
- selected, set and maintained correctly to accommodate the maximum differential pressures
- expected, on these valves during both normal and abnormal events within the design basis.
IE Bulletin 85-03 required a
180 day response which was transmitted by our letter dated May 14, 1986.
IE Bulletin 85-03 also required a written report within 60 days of completion of the program.
As stated in our letter dated December 4,
- 1987, the program was scheduled for completion within 60 days of startup from the 1988 refueling outage.
The program was completed as
. scheduled and this report provides the required information.
VERIFICATION OF PROGRAM COMPLETION The 1988 refueling outage ended on March 9,
1988 and the program described in Attachment 2
was completed by May 8,
1988.
The Attachment 2 program and Ginna procedures ensure that switch settings of the motor-operated valves (MOVs) listed in the program are
- selected, set and maintained correctly to accommodate the maximum differential pressures expected on these valves during both normal and abnormal events within the design basis throughout the life of the plant.
An administrative procedure addresses use of the above program in preventive maintenance and prescribes testing activities to be
-performed on a
periodic basis.
Maintenance procedures are then used to implement maintenance and testing activities by providing explicit instructions for maintenance and specifying what testing is required after certain t'ypes of maintenance are performed to ensure valve operability.
The test interval as described in the Attachment 2 Program may be altered based both on industrial experience or in-plant data.
8807130068
(
1
SUMMARY
OF-AS-POUND CONDITION Table 1
presents a
summary of the findings as to valve operability prior to any adjustments as a result of the Bulletin.
Prior to the use of the, program described in Attachment 2,
valve operability was based on the following parameters:
~
stroke time; open and close
~
verification of correct valve position indication
~
acceptable motor currents Based on these parameters, all valves in the program were operable.
The program using MOVATS methodology and equipment provided additional parameters by which valve operability could be assessed.
Table 1 presents the as-found valve operability as judged by the program criteria and the reason for the finding. It should be noted that these abnormalities did not necessarily make the valve inoperable.
The following is a
summary of the significant MOV abnormalities found.
SUMMARY
OF SIGNIFICANT MOV ABNORMALITIES No.
Bypass switch improperly set Incorrect thrust Unbalanced torque switch Valve backseating Unbalanceable torque switches Torque switch abnormalities Miscellaneous abnormalities 14 20 28 19 S1*
47 67 93 63 13
~
The total number of valves tested was 30.
- Number represents sum of miscellaneous abnormalities.
SUMMARY
OF DATA OBTAINED FROM VALVE OPERABILITY PROGRAM Table 2 describes the valve and operator.
Table 3 contains a
summary of the data obtained during the testing of the valve listed on Table 2.
Table 4 provides the justification, based on the program in Attachment 2, that the valve will operate properly at its design basis.
1
TNIW. 1 SIIHHARY OF AS-FOUND VAI,VF. OPERABIIeITY Page 1 of 4 Valve ID Punction As-Found Based on Prc-P ram Criteria*
Based on P
ram Crit.erin Reason for Potential In rabilit As-Pound MOV-825A>>>>
SI Pump Suction Yes No Underthrusting in closed direction, may not have closed against. design ba.,is Delta P.
HOV-825B"*
SI Pump Suction Yes No Underthrusting in closed direction, may not have closed against design basis Delta P.
MOV-826A>>>>
SI Pump Suction Ycs No Underthrusting in closed direction',
may not have closed against design basis Delta P.
MOV-826B SI Pump Suction No Underthrusting in closed direction, may.not have closed against design basis Delta P.
MOV-826C SI Pump Suction Yes Yes N/A MOV-826D SI Pump Suction Ycs No Underthrusting in closed direction, may not have closed against design basis Delta P.
MOV-871A SI Pump Discharge Yes Underthrusting in open direction and closed direction, may not have operated in either direction against design basis Delta P.
MOV-871B SI Pump Discharge Yes No Underthrusting in open direction, may not have operated against design basis Delta P.
MOV-1815A>>*
SI Pump Suction Yes No Underthrusting in closed direction, may not have closed against design basis Delta P.
HOV-1815B SI Pump Suction Yes No Underthrusting in closed direction, may not have closed against design basis Delta P.
TABLE 1 (Cont'd)
Page 2 of 4 Valve ID Function As-Found Based on Pre-P ram Criteria~
rabilit Based on P
ram Criteria Reason for Potential In rabilit As-Found HOV-3504A~*
TDAFWP Steam Admission Yes Yes N/A MOV-3505A TDAFWP Steam Admission Yes No Valve found to be backseating
- potential. for failure.
Underthrusting in open direction, may not have opened against design basis Delta P
since open torque switch bypass not wired into circuit.
MOV-3996 TDAFWP Discharge Yes Valve found to be backseating
- potential for failure.
HOV-4000A MDAFWP Discharge Crosstie Yes No Overthrusting in closed direction - potential for failure.
Open T.S.
bypass set at 3.494-potential for failure on opening against design basis Delta P.
MOV-4000B MDAFWP Discharge Crosstie Yes No If opening during design basis Delta P,
potential for.failure due to open T.S.
bypass set at 3.84%.
Underthrusting in closed direction, may not have operated against design basis Delta P.
MOV-4007 A-MDAFWP Discharge Yes No Potential for failure in open direction due to open T.S. bypass at 3.55%.
HOV-4008 B-MDAFWP Discharge
'I Yes No Underthrusting in closed direction, may not have operated against design basis Delta P.
'OV-4013 TDAFWP Service Water Yes Underthrusting in open direction, may not have operated against design basis Delta P.
MOV-4027*~
A-MDAFWP Service Water Yes Underthrusting in closed direction, may not have operated against design basis Delta P.
TABLE 1 (Cont'd)
Page 3 of 4 Valve ID Function As-Pound Based on Pre-P ram Criteria~
rabilit Based on P
ram Criteria Reason for Potential Ino rabilit As-Found MOV-4028 8-MDAFWP Service Water Yes Yes HOV-4615" Service Water Header Valve MOV-4616 Service Water Header Valve HOV-9629A C-SAFWP Service Water Suction Yes Yes No Ho Yes Underthrusting
- closed, may not have operated against design basis Delta P.
Undorthrusting in both directions - potential failure in open direction due to open T.S.
bypass set at 1.97%,
may not have operated closed against design basis Delta P.
N/A MOV-96298 0-SAFWP Service Water Suction MOV-9701A C-SAFWP Discharge MOV-97018*~
D-SAFWP Discharge Yes Yes No No Yes Potential failure due to open T.S.
bypass set (A.F.) at 4.1%.
Potential opening failure due to open T.S.
bypass set at 2.8%.
N/A MOV-9703A SAFWP Discharge Crosstie HOV-9703B SAFWP Discharge Crosstie Yes Yes No No Potential opening failure due to open T.S.
bypass set at 4.61%.
Underthrusting in both directions - potential opening failure due to open T.S.
bypass set at 4.88% -
may not have closed at design basis Delta P.
T
TABLE' (Cont'd)
Page 4 of 4 Valve ID Function As-Found Based on Pre-P ram Criteria~
rabilit Based on Pr ram Criteria Reason for Potential I rabilit As-Found HOV-9704A C-SAFWP Containment Isolation Yes No Underthrusting in open direction - potentiaL failure due Lo open T.S.
bypass set (A.F.) at 2.6'4.
Underthrusting in closed direction-may not have operated against design basis Delta P:
MOV-9704B D-SAFWP Containment Isolation Yes No Underthrusting in open direction - potential failure due to open T.S.
bypass set (A.F.) at 2.22%
Underthrusting in closed direction-may not have operated against design basi" Delta P.
~Criteria - stroke time, proper position indication, and acceptable motor currents
~~The identified MOVs were found to be underthrusting in the open direction, but were not considered inoperable since the open torque switch bypass switch was set to bypass the open peak thrust.
TABLE 2 DPSCRIPTION OP VALVE AND OPERA'MR OPERATOR I.D Manufacturer Size
)
Manufacturer Sire Hotor RPH Gear Ratio
~o??
Output RPH MOV-825A HOV-825B HOV-826A HOV-826B HOV"826C HOV-826D MOV-871A HOV-871B HOV-1815A HOV"1815B HOV-3504A HOV-3505A MOV-3996 MOV-4000A MOV"4000B HOV-4007 MOV-4008 MOV"4013 MOV-4027 MOV"4028 HOV-4615 HOV-4616 MOV-9629A MOV-9629B HOV-9701A HOV-9701B MOV-9703A HOV-9703B HOV-9704A MOV-9704B AMYCO ALOYCO nrOYCO ALOYCO ALOYCO ALOYCO VELAN VELAN ALOYCO ALOYCO ANCHOR DARLING ANCHOR DARLING ROCKWELL ROCKWELL ROCKWELL ROCKWELL ROCKWELL CRANE CRANE CRANE CRANE CRANE BORG WARNER BORG WARNER FISHER
~
FISHER ROCKWELL ROCKWELL ROCKWELL ROCKWELL GATE GATE GATE GATE GATE GATE GATE GATE GATE GATE GATE GATE GLOBE GLOBE GLOBE GLOBE GLOBE GATE GATE GATE GATE GATE GATE GATE GLOBE GLOBE GLOBE GLOBE GMBE GLOBE 8??
8??
8??
8?I 8??
?I 3??
3??
4??
4??
6?I el?
5?I 3? I 3??
3??
3a 4? I 4? ~
4?I 20" 2 0?I 4 I?
4??
3%?
3??
3 I?
3??
3? ~
3 I?
I?IHITORQUE LIMITORQUE LIHITORQUE LIHITORQUE IIHITORQUE LIHITORQUE LIHITORQUE I?IHITORQUE LIHITORQUE LIHITORQUE LIHITORQUE LIHITORQUE I>IMITORQUE LIHITORQUE LIMITORQUE LIMITORQUE LIMITORQUE LIMITORQUE LIMITORQUE LIMITORQUE LIHITORQUE LIMITORQUE LIMITORQUE LIMITORQUE LIHITORQUE LIMITORQUE LIHITORQUE LIHITORQUE I?IHITORQUE I.IHITORQUF.
SMB SMB SMB SMB SMB SHB SMB SMB SHB SHB SB SB SMB SMB SMB SMB SMB SMB SMB SMB SMB SMB SHB SHB SMB SMB SMB.
SMB SHB SMB 00-15 00-15 00-15 00-15 00-15 00-15 00-10 00-15 000-5 000-5 0
0 1-no 00 00 00-10 00-10 000-2 000-2 000-2 2-60 2-60 00-10 00-10 00-S-E 00-5 00 00 00-10 00-10 1700 1700 1750 1750 1750 1750 1750 1700 1750 1750 1900 1900 1900 1700 1700 3400 3400 1725 1725 1725 1750 1750 1700 1700 1700 1700 1700-1700 1700 1700 17.32/1 17.32/1 17.32/I 24.8/I 24.8/1
- 17. 32/I 31.9/I 31.9/I 33.83/I 33.83/I 33.11/1 33.11/1 40.15/1 72.0/1 72.0/1 72.0/1 72.0/I 65.0/I 65.0/1 es.o/1 43.99/1 43.99/1 23/I 23/I 41/1 41/1 72.0/1 72.0/1 72.0/1 72.0/1 98 15 98.15 lol.on 70.56 70.56 101.04
.sn.86 53.29
- 51. 13 51 73 57.38 57.38 47.32 23.61 23.61 47.22 47.22 26.54 26.54 26.54 39.78 39.78 73.91 73.91 ni.ne 41.46 23.61
'3.61 23.61 23.61
TABI.F. 3 SUNNARY OF PROGRILN DATIL VILLVE I.D DESIGN BASXS b,r OPEN/CuSE (psi)
TEST QP OPEN CMSE (psi)
As-HXJND T.S.S.
opEN/crnsE J4 ILS-IZfT T.S.S.
OPEN/CIA)SE 4/
ILS-FOUND OFF'.S.
BYPASS SFTTrNG
(>)
AS-LEFT OPEN T.S.
BYPASS SFTTING
(+)
AS-FOUND T.S.S.
TIIRUST OPEN/CLOSE (lbs.)
4/
RFQU IRl?D T.s.s.
TlU?UST OPEN/CLOSE (lbs. )
AS-LEFT T.S.S.
TIIRUST OFEN/erose (1bs.)
4/
MOV-825A MOV-825B MOV-826A MOV-826B "MOV-826C MOV-826D MOV-871A MOV-871B MOV-1815A MOV-1815B
~
MOV-3504IL NOV-3505A MOV-3996 MOV-4000A MOV-4000B MOV-4007 MOV-4008 NOV-4013 MOV-4027 MOV-4028 MOV-4615 MOV-4616 MOV-9629A MOV-9629B MOV-9701A MOV-9701B MOV-9703A MOV-9703B MOV-9704IL MOV-9704B 35/35 35/35 13/13 13/13 13/13 13/13 1535/1535 1535/1535 140/140 140/140 1118/1118 1118/1118 1644/1644 1475/1475 1475/1475 1475/1475 1475/1475 75/75 75/75 75/75 75/75 75/75 75/75 75/75 1441/1441 1441/1441 1055/1168 1055/1168 1441/1441 1441/1441 J1 11.4
- 14. 5 10.8 14.4 J2 J2 149 149 700/720 720/730 670/1400 1280/1460 1330/1440 1380
.460/655 77 75 81 J2 J2 135 135 30/710 570/620 1370 1360 570/580 590/600 Jl J1 11.4 8.8 10.8 14.4 J2'
~
J2 130/150 79/93 700/690 730/740 670/728 720/750 520/690 1210 465/655 75.5 75 81 J2 J2 135 135 300/580 620/675 1370 1360 590/625 730/760 1.75/1.75 2.0/2.0 2.25/1.5 1.25/1.25 2.0/1.5 1.5/1.5 1.0/1.5 1.25/1.0 1.0/1.0 1.0/2.0 2.0/1.5 2.0/2.5 2.25/2.0 1.5/1.5 2.0/1.0 2.0/2.0 2.0/1.75 1.0/2.0 1.0/1.0 1.0/1.0 2.0/1.875 2.25/2.7 2.0/1.5 1.5/1.5 1.25/1.5 1.5/1.5 1.5/1.5 1.0/1.25 1.5/1.5 1.0/1.0 1.75/2.125 1.6/1.8 2.0/2.0 1.5/2.0 1.75/2.0 1.5/2.0 2.0/2.25 1.25/1.25 2.5/1.5 1.5/2.5 2.0/2.0 2.25/2.25 2.5/2.5 1.0/1.25 1.5/1.875 1.0/2.0 1.5/1.75 2.0/2.0 2.0/2.0 2.0/2.0 2.5/2.5 2.0/2.0
'.0/1.5 1.5/1.5 2.0/1.5 1.75/1.75 1.25/1.25 1.0/1.0 1.0/1.5 1.5/1.75 10.45 11.76 13.29 10.84 10.83 8.53 0
2.04 11.26 10.53 7.46 0
9.10 3.49 3.84 3.55 6.39 0
7.27 9.18 6.68 1.97 12.61 4.13 2.80 9.04 4.61 4.88 2.60 2.22 8.4 6.2 9.0 8.2 9.9 8.5 6.0 6.7 6.2 9.8 7.6 9.3 8.3 8.0 6.7 7.3 7.3 6.8 9.6 9.1 6.7 8.4 8.4 7.0 6.2 7.95 7.4 8.9 8.9 8.8 2860/2840 5487/3780 2140/4300 4640/2460 2160/2060 9700/8700 3200/3540 1680/2640 9982/6500 10930/13306 44124/39821 1261/2239 2020/1920 1383/2467 19050/18650 6009/7133 3413/5120 5980/3080 5540/7644 13728/17159 5510/5430 6720/6350 4340/4000 3760/4600 3180/3260 2850/2925 8503/8225 9099/6345 3025/3325 1310/2490 16943/5727 12888/2844 40514/35958 9760/13700 16240/16930 6380/4080 36157/13920 2600/1830 1800/1860 811/571 22919/18795 24269/23763 3130/2063 3000/2280 5060/2410 8230/5470 10300/10300 16165/17219 35761/14361 28429/17029 6120/11345 7287/8356 5790/5175 4680/5220 6040/4780 4140/3620 9135/8941 9776/7494 3620/3760 2640/2940 14907/14068 15412/14510 31683/41909 7980/15506 14355/18643 9424/10660 17440/17080 2920/2640 2360/2460 860/1660 22450/23800 17560/25420 5420/7812 3260/4936 9204/5360 9720/7800 9700/11120 12603/18799 12889/17691 13090/18879 J3 J3 J3 J3 J3 J3'3 3/
J3 J3
TABLE 3.
Additional Information
~cCend:
T.S.S.
= Torque Switch Setting T.S.
= Torque Switch Notes:
1/ Required Q P was obtained by extrapolating 4 P test data from MOV-826 A,B,C and D that are the same as MOV-825A and B.
2/ Required Q P was obtained through MOVATS database.
3/ Acceptable because open T.S.
bypass switch set to bypass the open peak thrust.
4/ The relationship between T.S.S.
and thrust changes when maintenance is performed on the spring pack or T.S.
,Therefore, the AS-FOUND T.S.S.
vs. thrust may differ from the AS-LEFT T.S.S.
vs. thrust.
To prevent overthrusting, the open torque switch was set to a minimum before opening the valve into the load cell.
The thrust at'he torque switch minimum setting was extrapolated to the as-found torque switch setting and was found to exceed manufacturers rating.
Page 1 of 3 TABLE 4 VALVE I.D.
TEST METHOD DESCRIPTION/JUSTIFICATION MOV-825A Due to inability to Delta P test, data was obtained from the Delta P tests performed on four valves of the same type and size.
This data was plotted and extrapolated to obtain the required thrust values in the open-and closed directions.
The extrapolated thrusts were added to the running load thrusts and multiplied by a repeatability factor to obtain the reauired thrust for the torque switch settings.
(
Extrapolated
+
Running Repeatability
=
Minimum Open Torque Switch Open Thrust, Load Thrus Factor Thrust Setting (4850 lbs + 660 lbs) 1.083
= 5967 lbs As-left open torque switch operated at 6120 lbs which is above minimum required.
Extrapolated
+
Running Closed Thrust Load Thrus Repeatability
=
Minimum Closed Torque Switch Factor Thrust Setting (5050 lbs + 380 lbs) 1.083
= 5881 lbs As-left closed torque switch operated at 11345 lbs which is above minimum required.
Page 2 of 30 TABLE 4 {Cont'd)
VALVE I D.
TEST METHOD DESCRIPTION JUSTIFICATION MOV-825B Due to inability to Delta P test, data was obtained from the Delta P tests performed on four valves of the same type and size.
This data was plotted and extrapolated to obtain the required thrust values in the open and closed directions.
The extrapolated thrusts were added to the running load thrusts and multiplied by a
repeatability factor to obtain the required thrust for the torque switch settings.
Extrapolated Open Thrust
+
Running Load Thrus Repeatability
=
Minimum Open Torque Switch Factor Thrust Setting (4850 lbs
+ 1870 lbs) 1.078
= 7244 lbs As-left open torque switch operated at 7287 lbs which is above minimum required.
Extrapolated
+
Running Repeatability
=
Minimum Closed Torque Switch Closed Thrust Load Thrust Factor Thrust Setting (5050 lbs
+ 1300 lbs) 1.078 = 6845 lbs As-left closed torque switch operated at 8356 lbs which is above minimum required.
Page 3 of 30 TABLE 4 {Cont'd)
VALVE I.D.
MOV-826A TEST METHOD DESCRIPTION JUSTIFICATION A single Delta P test was performed at 11.4 psid in the open and closed directions using the head of water against the seat.
The open and closed design Delta P thrust values were obtained by extrapolating to the required 13 psid.
These values were added to the running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
c Extrapolated
+
Running Repeatability
=
Minimum Open Torque Switch Open Thrust Load Thrus Factor Thrust Setting (2400 lbs
+ 1940 lbs) 1.25 = 5425 lbs As-left open torque switch operated at 5790 lbs which is above minimum required.
(
Extrapolated
+
Running Repeatability
=
Minimum Closed Torque Switch Closed Thrust Load Thrus Factor Thrust Setting (1900 lbs
+ 2100 lbs) 1.25
= 5000 lbs As-left closed torque switch operated at 5175 lbs which is above minimum required.
TABLE 4 {Cont'd)
Page 4 of 30 VALVE I.D TEST ME'HOOD DESCRIPTION JUSTIFICATION MOV-826B A single Delta P test was performed at 14.5/8.8 psid in the open and closed directions respectively, using the head of water against the seat.
The open and closed design Delta P thrust values were obtained by interpolation/extrapolation to the required 13 paid.
These values were added to the running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
Interpolated
+
Running Open Thrust Load Thrus Repeatability
=
Minimum Open Torque Switch Factor Thrust Setting (1780 lbs
+ 1980 lbs) 1.13
= 4249 lbs As-left open torque switch operated at 4680 lbs which is above minimum required.
Extrapolated
+
Running Repeatability
=
Minimum Closed Torque Switch Closed Thrust Load Thrust Factor Thrust Setting (2780 lbs
+ 1820 lbs) 1.12
= 5152 lbs As-left closed torque switch operated at 5220 lbs which is above minimum required.
Page 5 of 30 TABLE 4 {Cont'd)
VALVE I.D.
TEST METHOD DESCRIPTION JUSTIFICATION MOV-826C A single Delta P test was performed at 10.8 psid in the open and closed directions using the head of, water against the seat.
The open and closed design Delta P thrust values were obtained by extrapolating to the required 13 psid.
These values were added to the running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
(
Extrapolated
+
Running Repeatability
=
Minimum Open Torque Switch Open Thrust Load Thrust Factor Thrust Setting (1740 lbs + 1440 lbs) 1.25
= 3975 lbs As-left open torque switch operated at 6040 lbs which is above minimum required.
Extrapolated
+
Running Repeatability
=
Minimum Closed Torque Switch Closed Thrust Load Thrus Factor Thrust Setting (1860,lbs
+ 1400 lbs) 1.25
= 4075 lbs As-left closed torque switch operated at 4780 lbs which is above minimum required.
Page 6 of 30 TABLE 4 (Cont'd}
VALVE I.D.
TEST METHOD DESCRIPTION JUSTIFICATION MOV-826D A single Delta P test was performed at 14.4 psid in the open and closed directions using the head of water against the seat.
The open and closed design Delta P thrust values were obtained by interpolating to the required 13 psid.
These values were added to the running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
Interpolated Open Thrust
+
Running Load Thrust Repeatability
=
Minimum Open Torque Switch Factor Thrust Setting (1570 lbs
+ 1280 lbs) 1.25 = 3563 lbs As-left open torque switch operated at 4140 lbs which is above minimum required.
Interpolated
+
Running Closed Thrust Load Thrus Repeatability
=
Minimum Closed Torque Switch Factor Thrust Setting (1645 lbs'+ 1280 lbs) 1.159
= 3390 lbs As-left closed torque switch operated at 3620 lbs which is above minimum required.
Page 7 of 30 TABLE 4 {Cont'd)
VALVE I D.
TEST METHOD DESCRIPTION JUSTIFICATION MOV-871A The open and closed design Delta P thrust values were obtained from the MOVATS database for the required 1535 psid.
These values were added to the as-found running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
Database
+
Running Repeatability
=
Minimum Open Torque Switch Open Thrust Load Thrus Factor Thrust Setting
{6343 lbs + 2160 lbs) 1.073
= 9124 lbs As-left open torque switch operated at 9135 lbs which is above minimum required.
Database
+
Running Closed Thrust Load Thrust Repeatability
=
Minimum Closed Torque Switch Factor Thrust Setting
{6345 lbs + 1880 lbs) 1.073
= 8825 lbs As-left closed torque switch operated at 8941 lbs which is above minimum required.
Page 8 of 30 TABLE 4 (Cont'd)
VALVE I.D.
TEST METHOD DESCRIPTION/JUSTIFICATION MOV"871B The open and closed design Delta P thrust values were obtained from the MOVATS database for the required 1535 psid.
These values were added to the as-found running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
Database Open Thrust
+
Running Load Thrus Repeatability
=
Minimum Open Torque Switch Factor Thrust Setting (6343 lbs
+ 2756 lbs) 1.067
= 9708 lbs As-left open torque switch operated at 9776 lbs which is above minimum required.
Database
+
Running Closed Thrust Load Thrus Repeatability
=
Minimum Closed Torque Switch Factor Thrust Setting (6345 lbs
+
0 lbs) 1.076
= 6827 lbs As-left closed torque switch operated at 7494 lbs which is above minimum required.
Page 9 of 30 TABLE 4 (Cont'd)
VALVE I.D TEST METHOD DESCRIPTION JUSTIFICATION MOV-1815A A single Delta P test at 149 psid was performed
.in the open direction and two Delta P
tests were performed in the closed direction at 130 psid and 150 psid.
The open and closed design Delta P thrust values were obtained by interpolating to the required 140 psid.
These values included the running load and were multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
c Interpolated Open Thrust Including Running Load Thrust Repeatability Factor Minimum Ooen Torque Switch Thrust Setting (3025 lbs) 1.13
= 3418 lbs As-left open torque switch operated at 3620 lbs which is above minimum required.
Interpolated Closed Thrust Including Running Load Thrust Repeatability
=
Minimum Open Torque Switch Factor Thrust Setting (3325 lbs) 1.13
= 3757 lbs As-left closed torque switch operated at 3760 lbs which is above minimum required.
TABLE 4 (Cont'd)
Page 10 of 30 VALVE I D.
TEST METHOD DESCRIPTION/JUSTIFICATION MOV-18158 A sinale Delta P test at 149 psid was performed in the open direction and two Delta P
tests were performed in the closed direction at, 79 psid and 93 psid.
The open design Delta P thrust value was obtained by interpolatina to the reauired 140 psid.
The closed design Delta P thrust value was obtained by extrapolating to the required 140 psid.
These values were added to the Delta P running loads and multiplied by a
repeatability factor to obtain the reauired thrust for the toraue switch settinas.
Interpolated
+
Running Repeatability
=
Minimum Open Torque Switch Open Thrust Load Thrus Factor Thrust Setting (670 lbs
+ 640 lbs) 1.25 = 1638 lbs As-left open torque switch operated at 2640 lbs which is above minimum required.
Extrapolated
+
Running Repeatability
=
Minimum Closed Torque Switch Closed Thrust Load Thrust Factor Thrust Settina (1850 lbs + 640 lbs) 1.159
= 2885 lbs As-left closed torque switch operated at 2940.lbs which is above minimum required.
TABLE 4 (Cont,'d)
Page 11 of 30 VALVEI D TEST METHOD DESCRIPTION JUSTIFICATION MOV-3504A Two Delta P tests were performed in the open direction at 700 psid and 720 psid and in the closed direction at 700 psid and 690 psid.
The open and closed design Delta P
thrust values were obtained by extrapolating to the required 1118 psid.
These values were added to the as-left running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
Extrapolated Open Thrust
+
Running Repeatability
=
Minimum Open Torque Switch Load Thrust Factor Thrust Setting (14000 lbs + 2943 lbs) 1.067
= 18078 lbs As-left open torque switch operated at 14907 lbs which is below minimum, but this is allowable since the open peak thrust is bypassed.
Extrapolated
+
Running g Repeatability
=
Minimum Closed Torque Switch Closed Thrust Load Thrust )
Factor Thrust Setting (2700 lbs + 3027 lbs) 1.083 = 6202 lbs
~
As-left closed torque switch operated at 14068 lbs which is above minimum required.
Page 12 of 30 TABLE 4 (Cont'd)
VALVE I.D.
TEST METHOD DESCRIPTION JUSTIFICATION MOV-3505A Two Delta P tests were performed in the open direction at 720 psid and 730 psid and in the closed direction at 730 psid and 740 psid.
The open and closed design Delta P
thrust values were obtained by extrapolating to the required 1118 psid..
These values were added to the as-left running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
Extrapolated Open Thrust
+
Running Q Repeatability
=
Minimum Open Torque Switch Load Thrust)
Factor Thrust Setting (11500 lbs
+ 1388 lbs) 1.073
= 13829 lbs As-left open torque switch operated at 15412 lbs which is above minimum required.
Extrapolated
+
Running g Repeatability
=
Minimum Closed Torque Switch Closed Thrust Load Thrust )
Factor Thrust Setting (1690 lbs + 1154 lbs) 1.159
= 3296 lbs As-left closed torque switch operated at 14510 lbs which is above minimum required.
TABLE 4 (Cont'd)
Page 13 of 30 VALVE I D TEST METHOD DESCRIPTION JUSTIFICATION MOV-3996 Two Delta P tests were performed in the open direction at 670 psid and 1400 psid and in the closed direction at 670 psid and 728 psid.
The open and closed design Delta P
thrust values were obtained by extrapolating to the required 1644 psid.
These values were added to the as-left running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
Extrapolated
+
Running Repeatability
=
Minimum Open Torque Switch Open Thrust Load Thrust Factor Thrust Setting (33000 lbs
+ 7514 lbs) 1.064
= 43107 lbs As-left open torque switch operated at 31683 lbs which is below minimum, but this is allowable since the open peak thrust is bypassed.
Fxtrapolated
+
Running Repeatability
=
Minimum Closed Torque Switch Closed Thrust Load Thrust Factor Thrust Setting (25500 lbs + 10458 lbs) 1.064
= 38259 lbs 4
As-left closed torque switch operated at 41909 lbs which is above minimum required.
TAHLE 4 {Cont'd)
Page 14 of 30 VALVE I.D.
TEST METHOD DESCRIPTION/JUSTIFICATION MOV-4000A Two Delta P tests were performed in the open direction at 1280 psid and 1460 psid and in the closed direction at 720 psid and 750 psid.
The open and closed design Delta.P thrust values were obtained by extrapolating to the required 1475 psid.
These values were added to the as-left running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
Extrapolated
+
Running Open Thrust Load Thrus Repeatability Factor Minimum Open Torque Switch Thrust Setting (7400 lbs
+ 2360 lbs) 1.073
= 10472 lbs As-left open torque switch operated at 7980 lbs which is below minimum, but this is allowable since the open peak thrust is bypassed.
Extrapolated
+
Running Repeatability
=
Minimum Closed Torque Switch Closed Thrust Load Thrust Factor Thrust Setting (11200 lbs
+ 2500 lbs) 1.073 = 14700 lbs As-left closed torque switch operated at 15506 lbs which is above minimum required.
Page 15 of 30 TABLE 4 (Cont'd)
VALVE I D.
TEST ME'HOOD DESCRIPTION/JUSTIFICATION MOV-40008 Two Delta P tests were performed in the open direction at 1330 psid and 1440 psid and in the closed direction at 520 psid and 690 psid.
The open and closed design Delta P
thrust values were obtained by extrapolating to the required 1475 psid.
These values were added to the as-left running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
Extrapolated
+
Running Repeatability
=
Minimum Open Torque Switch Open Thrust Load Thrust Factor Thrust Setting (12300 lbs
+ 3940 ibs} 1.067
= 17328 lbs As-left open torque switch operated at 14355 lbs which is below minimum, but this is allowable since the open peak thrust is bypassed.
Extrapolated
+
Running Closed Thrust Load Thrus Repeatability Factor Minimum Closed Torque Switch Thrust Setting (11950 lbs + 4980 lbs) 1.067
= 18064 lbs As-left closed torque switch operated at 18643 lbs which is above minimum required.
Page 16 of 30 TABLE 4 (Cont'd)
VALVE I.D.
TEST METHOD DESCRIPTION JUSTIFICATION MOV-4007 A single Delta P test was performed in the open direction at 1380 psid and in the closed direction at 1210 psid.
The open and closed design Delta P thrust values were obtained by extrapolating to the required 1475 psid.
These values were added to the as-left running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
c Extrapolated
+
Running Repeatability
=
Minimum Open Torque Switch Open Thrust Load Thrus Factor Thrust Setting (5100 lbs
+ 1280 lbs) 1.078
= 6878 lbs As-left open torque switch operated at 9424 lbs which is above minimum required.
Extrapolated
+
Running Closed Thrust Load Thrus Repeatability Factor Minimum Closed Torque Switch Thrust Setting (2100 lbs + 1980 lbs) 1.136
= 4635 lbs As-left closed torque switch operated at 10660 lbs which is above minimum required.
TABLE 4 (Cont'd)
Page 17 of 30 VALVE I.D.
TEST METHOD DESCRIPTION JUSTIFICATION MOV-4008 Two Delta P tests were performed in the open direction at 460 psid and 655 psid and in the closed direction at 465 psid and 655 psid.
The open and closed design Delta P
thrust values were obtained by extrapolating to the required 1475 psid.
These values were added to the as-found running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
Extrapolated
+
Running Open Thrust Load Thrust Repeatability
=
Minimum Open Torque Switch Factor Thrust Setting (33500 lbs
+ 2657 lbs) 1.064
= 38471 lbs As-left open torque switch operated at 17440 lbs which is below minimum, but this is allowable since the open peak thrust is bypassed.
Extrapolated
+
Running Repeatability
=
Minimum Closed Torque Switch Closed Thrust Load Thrus Factor Thrust Setting (11000 lbs
+ 2920 lbs) 1.067
= 14852 lbs As-left closed torque switch operated at 17080 lbs which is above minimum required.
TABLE 4 (Cont'd}
Page 18 of 30 VALVE I.D.
TEST METHOD DESCRIPTION/JUSTIFICATION MOV-4013 A single Delta P test was performed at 77 psid in the open direction and at 75.5 psid in the closed direction.
The open and closed design Delta P thrust values were obtained by interpolating to the required 75 psid.
These values were added to the running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
Interpolated
+
Running Repeatability
=
Minimum Open Torque Switch Open Thrust Load Thrus Factor Thrust Setting (1780 lbs
+ 820 lbs) 1.159
= 3013 lbs As-left open torque switch operated at 2920 lbs which is below minimum, but this is allowable since the open peak thrust is bypassed.
Interpolated
+
Running Closed Thrust Load Thrus Repeatability
=
Minimum Closed Torque Switch Factor Thrust Setting (1170 lbs
+ 660 lbs) 1.159
= 2121 lbs As-left closed torque switch operated at 2640 lbs which is above minimum required.
TABLE 4 (Cont'd)
Page 19 of 30 VALVEI D.
TEST METHOD DESCRIPTION JOSTIFICATION MOV-4027 A single Delta P test was performed at the design Delta P of 75 psid in the open and closed directions.
These values were added to the running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
Open Thrust
+
Running Repeatability
=
Minimum Open Torque Switch Load Thrust Factor Thrust Setting (600 lbs
+ 1200 lbs) 1.159
= 2086 lbs As-left open torque switch operated at 2680 lbs which is above minimum required.
Closed Thrust
+
Running Repeatability
=
Minimum Closed Torque Switch Load Thrust Factor Thr'ust Setting (780 lbs
+ 1080 lbs) 1.25
= 2325 lbs As-left closed torque switch operated at 2460 lbs which is above minimum required.
TABLE 4 (Cont'd)
Page 20 of 30 VALVE I.D.
TEST METHOD DESCRIPTION JUSTIFICATION MOV-4028 A single Delta P test was performed at 81 psid in the open and closed directions.
The open and closed design Delta P thrust values were obtained by interpolating to the required 75 psid.
These values were added to the running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
Interpolated
+
Running Repeatability
=
Minimum Open Torque Switch Open Thrust Load Thrus Factor Thrust Setting (670 lbs
+ 141 lbs} 1.25
= 1014 lbs As-left open torque switch operated at 860 lbs which is below minimum. but this is allowable since the open peak thrust is bypassed.
Interpolated
+
Running Closed Thrust Load Thrus Repeatability
=
Minimum Closed Torque Switch Factor Thrust Setting (485 lbs + 86 lbs) 1.25 = 714 lbs As-left closed torque switch operated at 1660 lbs which is above minimum required.
TABLE 4 (Cont'd)
Page 21 of 30 VALVE I.D.
TEST METHOD DESCRIPTION JUSTIFICATION MOV-4615 The open and closed design Delta P thrust values were obtained from the MOVATS database for the required 75 psid.
These values were added to the as-left running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
Database Open Thrust
+
Running Load Thrus Repeatability
=
Minimum Open Torque Switch Factor Thrust Setting (14669 lbs
+ 8250 lbs) 1.067 = 24455 lbs As-left open torque switch operated at 22450 lbs which is below minimum, but this is allowable since the open peak thrust is bypassed.
Database
+
Running Repeatability
=
Minimum Closed Torque Switch Closed Thrust Load Thrust Factor Thrust Setting (10995 lbs
+ 7800 lbs) 1.067
= 20054 lbs As-left closed torque switch operated at 23800 lbs which is above minimum required.
Page 22 of 30 TABLE 4 (Cont'd)
TEST METHOD DESCRIPTION/JUSTIFICATION The open and closed design Delta P thrust values were obtained from the MOVATS database for the required 75 psid.
These values were added to the as-left running loads and multiplied by a repeatability factor to obtain the r'equired thrust for the torque switch settings.
Database
+
Running Open Thrust Load Thrust Repeatability
=
Minimum Open Torque Switch Factor Thrust Setting
{14669 lbs
+ 9600 lbs) 1.067
= 25895 lbs As-left open torque switch operated at 17560 lbs which is below minimum, but this is allowable since the open peak thrust is bypassed.
Database
+
Running Repeatability
=
Minimum Closed Torque Switch Closed Thrust Load Thrus Factor Thrust Setting (10995 lbs + 12768 lbs) 1.067
= 25356 lbs As-left closed torque switch operated at 25420 lbs which is above minimum required.
'I
TABLE 4 (Cont'd)
Page 23 of 30 VALVE I.D TEST METHOD DESCRIPTION JUSTIFICATION MOV-9629A A single Delta P test was performed at 135 psid in the open and closed directions.
The open and closed design Delta P thrust values were obtained by interpolating to the required 75 psid.
These values were added to the running loads and multiplied by a repeatability factor to obtain the required thrust.for the torque switch settings.
Interpolated Open Thrust
+
Running Repeatability
=
Minimum Open Torque Switch Load Thrust Factor Thrust Setting (650 lbs
+ 2480 lbs) 1.136
= 3556 lbs As-left open torque switch operated at 5420 lbs which is above minimum required.
Interpolated
+
Running Q Repeatability
=
Minimum Closed Torque Switch Closed Thrust Load Thrust/
Factor Thrust Setting (175 lbs
+ 1888 lbs) 1.159
= 2391 lbs As-left closed torque switch operated at 7812 lbs which is above minimum required.
Page 24 of 30 TABLE 4 {Cont'd)
VALVE I.D.
TEST METHOD DESCRIPTION/JUSTIFICATION MOV-96298 A single Delta P test was performed at 135 psid in the open and closed directions.
The open and closed design Delta P thrust values were obtained by interpolating to the required 75 psid.
These values were added to the running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
(
Interpolated
+
Running Repeatability
=
Minimum Open Torque Switch Open Thrust Load Thrust Factor Thrust Setting (1600 lbs
+ 1400 lbs) 1.136
= 3408 lbs As-left open torque switch operated at 3260 lbs 'which is below minimum, but this is allowable since the open peak thrust is bypassed.
Interpolated
+
Running Repeatability
=
Minimum Closed Torque Switch Closed Thrust Load Thrust Factor Thrust Setting (940 lbs
+ 1340 lbs) 1.159 = 2642 lbs As-left closed torque switch operated at 4936 lbs which is above minimum required.
Page 25 of 30 TABLE 4 (Cont'd)
VALVE I.D TEST METHOD DESCRIPTION/JUSTIFICATION MOV-9701A Two Delta P tests were performed in the open direction at 30 psid and 710 psid and in the closed direction at 300 osid and 580 psid.
The open and closed design Delta P
thrust values were obtained by extrapolating to the required 1441 psid.
These values were added to the as-left running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
Extrapolated
+
Running Open Thrust Load Thrus Repeatability
=
Minimum Open Torque Switch Factor Thrust Setting
{4400 lbs
+ 660 lbs} 1.083
= 5480 lbs As-left open torque switch operated at 9204 lbs which is above minimum required.
Extrapolated
+
Running Closed Thrust Load Thrus Repeatability
=
Minimum Closed Torque Switch Factor Thrust Setting (1250 lbs + 1160 lbs) 1.159
= 2793 lbs As-left closed torque switch operated at 5360 lbs which is above minimum required.
Page 26 of 30 TABLE 4 {Cont'd)
VALVE I D.
TEST METHOD DESCRIPTION/JUSTIFICATION MOV-9701B Two Delta P tests were performed in the open direction at 570 psid and 620.psid and in the closed direction at 620 psid and 675 psid.
The open and closed design Delta P
thrust values were obtained by extrapolating to the required 1441 psid.
These values were added to the as-left running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
Extrapolated
+
Running Repeatability
=
Minimum Open Torque Switch Open Thrust Load Thrust Factor Thrust Setting
{7350 lbs
+ 880 lbs} 1.076 = 8855 lbs As-left open torque switch operated at. 9720 lbs which is above minimum required.
Extrapolated
+
Running Repeatability
=
Minimum Closed Torque Switch Closed Thrust Load Thrust Factor Thrust Setting
{4250 lbs
+
$220 lbs) 1.083
= 5924 lbs As-left closed torque switch operated at 7800 lbs which is above minimum required.
Page 27 of 30 TABLE 4 (Cont'd)
VALVE I D.
TEST ME'HOOD DESCRIPTION/JUSTIFICATION MOV-9703A A single Delta P test was performed at 1370 psid'n the open and closed directions.
The open and closed design Delta P thrust values were obtained by interpolating to the required open 1055 psid and closed 1168 psid.
These values were added to the running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
(
Interpolated
+
Running Repeatability
=
Minimum Open Torque Switch Open Thrust 'oad Thrust Factor Thrust Setting (6600 lbs
+ 3700 1bs} 1.073
= 11052 lbs As-left open torque switch operated at 9700 lbs which is below minimum, but this is allowable since the open peak thrust is bypassed.
Interpolated
+
Running Closed Thrust Load Thrus Repeatability
=
Minimum Closed Torque Switch Factor Thrust Setting (6600 lbs + 3700 lbs} 1.073
= 11052 lbs As-left closed torque switch operated at 11120 lbs which is above minimum required.
Page 28 of 30 TABLE 4 (Cont'd)
VALVE I.D TEST METftOD DESCRIPTION/JUSTIFICATION MOV-9703B A single Delta P test was performed at 1360 psid in the open and closed directions.
The open and closed design Delta P thru t values were obtained by interpolating to the required open 1055 psid and closed 1168 psid.
These values were added to the running loads and multiplied by a repeatability fact:or to obtain the required thrust for the torque switch settings.
Interpolated
+
Running Repeat:ability
=
Minimum Open'orque Switch Open Thrust Load Thrust:
Factor Thrust Setting (9100 lbs + 7065 lbs) 1.067
= 17248 lbs As-left open torque switch operated at 12603 lbs which is below minimum, but this is allowable since the open peak t:hrust is bypassed.
Interpolated
+
Running Repeatability
=
Minimum Closed Torque Switch Closed Thrust Load Thrust Factor Thrust Setting (10100 lbs
+ 7119 lbs) 1.067 = 18373 lbs As-left closed torque switch operated at 18799 lbs which is above minimum required.
Page 29 of 30 TABLE 4 (Cont'd)
'JALVE I.D.
TEST METHOD DESCRIPTION JUSTIFICATION MOV"9704A Two Delta P tests were performed in the open direction at 5/0 psid and 580 psid and in the closed direction at 590 psid and 625 psid.
The open and closed design Delta P
thrust values were obtained by extrapolating to the required 1441 psid.
These values were added to the as-left running loads and multiplied by a repeatability factor to obtain the required thrust for the torque switch settings.
Extrapolated Open Thrust
+
Running Load Thrust Repeatability
=
Minimum Open Torque Switch Factor Thrust Setting (29400 lbs
+ 6361 lbs) 1.064
= 38050 lbs As-left open torque switch operated at 12889 lbs which is below minimum, but this is allowable since the open peak thrust is bypassed.
Extrapolated
+
Running Repeatability
=
Minimum Closed Torque Switch Closed Thrust Load Thrust Factor Thrust Setting (8000 lbs
+ 6361 lbs} 1.067 = 15323 lbs
~
As-left closed torque switch operated at 17691 lhs which is above minimum required.
Page 30 of 30 TABLE 4 {Cont'd)
VALVE I.D.
TEST METHOD DESCRIPTION/JUSTIFICATION MOV-9704B Two Delta P tests were performed in the open direction at 590 psid and 620 psid and in the closed direction at 730 psid and 760 psid.
The open and closed design Delta P
thrust values were obtained by extrapolating to the required 1441 psid.
These values were added to the as-left running loads and multiplied by a repeatability factor to obtain the required thrust for the'orque switch settings.
Extrapolated
+
Running Open Thrust Load Thrus Repeatability
=
Minimum Open Torque Switch Factor Thrust Setting
{18700 lbs + 9129 lbs} 1.064
= 30248 lbs As-left open torque switch operated at 13090 lbs which is below minimum, but this is allowable since the open peak thrust is bypassed.
Extrapolated
+
Running Closed Thrust Load Thrus Repeatability
=
Minimum Closed Torque Switch Factor Thrust Setting
{7300 lbs + 9729 lbs) 1.067
= 18169 lbs As-left closed torque switch operated at 18879 lbs which is above minimum required.
ATTACHMENT 2 SAFETY RELATED MOTOR OPERATED VALVE PROGRAM (For record keeping
- purposes, the Program has been generated in Design Criteria format.)