ML20080C467
| ML20080C467 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde, 05000000 |
| Issue date: | 08/25/1983 |
| From: | Childress E AFFILIATION NOT ASSIGNED |
| To: | |
| Shared Package | |
| ML20080C249 | List: |
| References | |
| FOIA-83-609 1824B-0978B, 1824B-978B, 91HF-1SG01, 91HF-1SG01-R00, 91HF-1SG1, 91HF-1SG1-R, NUDOCS 8402080101 | |
| Download: ML20080C467 (18) | |
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l TEST RESULTS REPORT PROCEDURR NO. 91HF-1SG01 MAIN STEAM ISOLATION VALVES AND PROCEDURE TITLE BYPASS VALVES HOT FUNCTIONAL TEST
, REVISION AT THE C0!!MENCEMENT OF TESTING 0 DATE 6/1/83 REVISION AT COMPLETION OF TESTING 0 DATE 6/1/83 LATEST TEST CHANGE NOTICE NO. 15 DATE 7/3/83 DATES OF TEST PERFORMANCE 6/2/83 THROUGH 7/3/83 PAGE 1 0F 18 Review and Approval of Test Results PREPARED BY: t/m9 DATE c7 " // 2 ~
TECHNICAL REVIEW: c/er, _, DATE F //7 / A 3 GROUP SUPERVISOR EW: . .
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DATE [-2[ b TEST WORKING GROUP MEETING NUMBER: DATE PLANT REVIEW BOARD MEETING NUMBER: DATE QUALITY ASSURANCE REIVEW: DATE (Required for Test Results Reports not reviewed by TWG)
STARTUP MANAGER APPROVAL: DATE 1824B/0978B 8402080101 831116 PDR FOIA GARDES3-609 PDR f4 S 2 '. -
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, Test Results Report 91HF-1SC01 Rev. O TCN 15 Page 2 of 18 A. TEST PURPOSE AND SCOPE
. e The intent of this Precore Hot Functional Test was to demonstrate the operation of the four Main Steam Isolation Valves (MSIV's), two MSIV
- Bypass valves and the six Main Steam Trap Isolation valves using the "A" and "B" train normal and Main Steam Isolation Signal (MSIS) control circuitry at Hot Standby conditions (RCS
- 565'F, 2250 psia; Secondary: 565'F, 1170 psia). This included a preliminary hot steam flush through each of the four MSIV's, a loss of power response verification, and a MSIS ("A" and "B" trains) response time test for
- each of the twelve valves, including a verification of the MSIS override feature.
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Test Results Report 91HF-ISG01 Rev. O TCN 15 Page 3 of 18 B. COMPLEMENTARY TESTS 91PE-ISG01, Main Steam Isolation Valves and Bypass Valves Preoperational Test 91PE-ISC04, Steam Generator Isolations 91HF-1SF03, Precore Turbine Bypass Control System a
90HF-12Z01, Precore Hot Functional Testing Controlling Document 91HF-1ZZ11, Safety Related Velve Response Time at Design Condition *s I-I l
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Test Results Report 91HF-ISG91 Rev. O TCN 15 ~~~~
Page 4 of 18 C. TEST DESCRIPTION o i The test methodologies used can he divided into the four categories described below:
- 1) Hot steam flushes were performed by first opening only the MSIV to be flushed through and the opposing steam generator MSIV Bypass valve, then opening the Steam Bypass Control System Valve 13JN-PV-1006 to the condenser to control tha flush. This testing evolution was performed in conjunction with 91RF-lSF03, Turbine "
Steam Bypass Control System. The hot steam flushes were performed for equipment protection only and therefore did not have any acceptance criteria associated with them.
- 2) Valve operability testing was performed on all 12 valves using the respective normal control switches located on the main control room paneI's and observing the valve response.
l 3) Valve response to loss of power was performed on all 12 valves by momentarily interrupting the respective power source using control power switches, disconnect switches or lif ting the l
energized cables and cbserving the valve response.
- 4) MSIS valve response time testing was performed on all 12 valves
! by initiating the respective MSIS signal using the temporary i ESFAS switches installed per 92SU-1SA01, ESFAS Switch Installation and Removal, and using a multi channel strip chart recorder to record MSIS signal and valve position versus time.
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o Test Results Report 91HF-lSG01 Rev. O TCN 15 Page 5 of 18 D. TEST EVENTS This Precore Hot Functional Test commenced at 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> on June 2,
- 1983 and concluded (with open TER's) at 1035 hours0.012 days <br />0.288 hours <br />0.00171 weeks <br />3.938175e-4 months <br /> on July 3,1983.
The test did not run continuously during th'.s time period due to other testing in progress, plant / equipment availability and various repairs / modifications required on the MSIV and MSIV Bypass valves.
However, this discontinuity did not adversely affect the technical aspect of the procedure since it was structured on a discrete ,
subsection basis.
The HSIV's underwent considerable maintenance and repair immediately prior to and during the initial performance of the test. Most of the repairs centered around the MSIV hydraulic actuators (oil leaks, oil reservoir overflowing', the valve drifting open from the closed position, booster pump failures) and modificacions to the MSIV limit switches (See NCR-SM1956).
Sf)}nificantoilreservoiroverflowproblemscontinuedtooccurduring e
t){etestingoftheFastOpenfeatureoftheHSIV's.. This problem resulted in TER 07, SFR-1SG-158 and TCN 13 (scope intent). The SFR reryolution was to remove the Fast Open feature from all four MSIV's and delete the testing requirement from the procedure. TCN 13 removed the testing requirement from the procedure.
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Test Results Report 91HF-1SC01 ,
Rav. O TCN 15 Page 6 of 18 Also, initially neither SG-UV-169 nor SG-UV-183 could meet the response time test acceptance criteria for_ the "B" Train MSIS actuation. This resulted in TER 01, SFR-lSG-133 and NCR-SJ-2221.
.The problem was resolved by retubing the "A" and "B" solenoid valve air lines. Following the modification SG-UV-169 and SG-UV-183 met b the acceptance criteria for the MSIS Response Time Test.
The hot steam flushes through the fear MSIV's were restricted to maximum -25'F change in RCS temperature. In most cases the RCS temperature change was kept to 10 - 15*F at the discretion of the Test Director for each of the three flushes per line. This was done to reduce the recovery time of the RCS and thereby expedite the overall testing program.
On June 30, 1983, ICN 08 (modified by TCN 10) and TCN 11 received l
interim approval then were entered into the procedure. These TCN's incorporated a verification of the Safety Equipment Status System (SESS) panel operation for the four MSIV's and the two MSIV Bypass Valves. The SESS panel operation was not originally included in the procedure as the forecast system completion status indicated the equipment would not be ready during the scheduled test period of the Precore HFT. Three TER's that were generated due to improper operation of the SESS remained open at the conclusion of Precore HFT. The retesting associated with these TER's will have to be performed during Post Core HFT. See Section G. Recommendations,
- 1) Additional Testing, of this TRR for details.
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Test Results Report 91HF-1SG01 Rev. O TCN 15 Page 7 of 18 E. TEST RESULTS f
All acceptance criteria were met except the "B" Train Exercise Mode
,for SG-UV-170. The failure of SG-UV-170 to meet the "B" Train Exercise Mode acceptance criteria (2.1.2.2) resulted in TER 08 which remained open at the conclusion of Precore HFT.
The Fast Open operations (acceptance criteria 2.5.1.2, 2.5.2.2, 2.5.3.2, 2.5.4.2, 2.5.1.3, 2.5.2.3, 2.5.3.3, 2.5.4.3) from both the C "A" and "B" Trains for all four MSIV's resulted in TER 07, SFR-lSG-156 and DCPs ISJ/2SJ/3CJ-SG-087. The approved resolution for the SFR was to remove the Fast Open feature and delete the testing requirement from the test procedure. TCN 13 deleted the testing requirements including the associated acceptance criteria from the l' ,
test procedure, i
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l Appendix A presents the acceptance criteria versus valve number in a tabular format. The convention used was the acceptance criteria step number listed above the acceptance criteria status were " pass" l
l indicates the acceptance criteria was met, "TER ##" indicates the i
acceptance criteria failed and a TER was generated, "TCN ##"
indicates the acceptance criteria was deleted from the procedure; and i
for response times the actual value in seconds is provided for
- convenience and comparison.
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, Test Results Report 91HF-1SG01 Rev. O TCN 15 Page 8 of 18 The following TER's were generated during the performance of
. t 91HF-lSG01:
TER 01: Step 8.9.5.24; SG-UV-169 did not pass the MSIS "B" Train response time acceptance criteria of less than or equal to 5.0 seconds. SFR-lSG-133 and NCR-SJ2221 were generated.
The "A" and "B" solenoid valve air lines were rerouted per the SFR resolution. SG-UV-169 passed the acceptance criteris on the subsequent retest. y TER 02: Step 8.9.6'.10; SG-UV-183 did not pass the MSIS "A" Train response time acceptance criteria of less than or equal to i
5.0 seconds. Upon investigation it was discovered that the "A" or "B" Train solenoid valve control circuitry was wired backwards. This made it an identical problem to that of TER 01. The control circuitry was rewired per the EE 580 and the air lines rerouted per SFR-lSG-133. SG-UV-183 passed tho acceptance criteria on the subsequent retest.
TER 03: Steps 8.11'.3.10 and 3.11.3.11; during the response time testing of SG-UV-ll35A and SG-UV-1135B, the strip chart recorder failed to provide a useable timing signal. The
- resolution of the TER was TCN 07 which changed the signal
. connection points for the recorder input. Both SG-UV-ll35A and SG-UV-1135B passed the acceptance criteria on the J
- subsequent retest.
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Test Results Report 91HF-1SG01
. Rev. O TCN 15 Page 9 of 18 TER 04: Step 8.9.1.32.1; SG-UV-170 discrepancy status (Blue) light 2
did not extinguish during the MSIS "B" Train actuation test. This step was entered per TCN 08 and did not reflect the actual design of the SESS logic circuitry. The resolution of the TER was TCN 10 which deleted the step and added the correct steps to the procedure. The required retest was not performed prior to the conclusion of Precore HFT Testing.
TER 05: Step 8.9.2.18.1; SG-UV-180 discrepancy status (Blue) light ,
did not extinguish during the MSIS "A" Train actuation test. This step was entered per TCN 08 and did not reflect the actual design of the SESS logic circuitry. This TER was written prior to the ent.ry of TCN 10. The resolution of the TER was TCN 10 which deleted the step and added the correct steps to the procedure. The required retest was not i performed prior to the conclusion of Precore HFT Testing.
L TER 06: Step 8.9.2.30.1; SG-UV-180 discrepancy status (Blue) light did not illuminate during the MSIS "B" Train actuation test. Initial investigation indicates the problem is mechanical or instrumentation related and not procedural, since similar indicator lights worked properly ,on the other three MSIV's. The resolution is complete but was not l
i completed prior to the conclusion of Precore HFT Testing.
Theref ore, the required retest is still an outstanding item.
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Test Results Report 91HF-1SG01.
Rev. O TCN 15 Page 10 of 18 TER 07: Steps 8.6.1.5, 8.6.1.7, S.6.2.5, 8.6.2.7, 8.6.3.5, 8.6.3.7,
' i 8.6.4.5, 8.6.4.7; addresses the testing of the MSIV Fast Open feature. This TER generated SFR-1SG-158. The approved resolution to the SFR was to remove the MSIV Fast Open feature from all four MSIV's per DCPs ISJ/2SJ/3CJ-SG-087 and i
delete the testing requirements from the procedure. TCN 13 deleted the testing requirements including the associated acceptance criteria from the procedure. Therefore, this TER a
is closed and requires no retest, a
TER 08: Step 8.2.2.8; SG-UV-170 did not return to the open position h
during the Excercise Mode Testing and the related (Blue) indicator light did not extinguish. Initial investigation indicated the problem is mechanical or instrumentation related and not procedural since similar functions worked properly on the other three MSIV's and during the performance of 91PE-ISG01. The resolution is complete but was not completed prior to the conclusion of the Precore HFT Testing. Therefore, the required retest is still an outstanding item.
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Test Results Report 91HF-lSG01 Rev. O TCN 15 Page 11 of 18 TER 09: Steps 8.6.1.4, 8.6.2.4, 8.6.3.4, 8.6.4.4; SGN-PI-1027 i
indicated less than 900 psia with a steam header pressure of approximately 1140 psia. The range of the pressure
. indicator is 900 to 1300 psia. An initial investigation indicated the signal loop had failed downscale. Alternate indication was used and testing continued. The problem was determined to be a breken sensing line which was repaired under WO-15137. Therefore, this TER is closed and requires no retest. ,.,
TER 10: Steps 8.1.2.1, 8.1.2.1.1, 8.1.2.1.2, 8.1.2.1.3, 8.1.2.1.4, 8.1.2.2, 8.1.2.3, 8.1.2.4; this TER was generated during the results review process. The above referenced steps were not signed of f during the het steam flushes through the SG-UV-1801dne. The hot steam flushes were performed for equipment protection only and therefore do not have an acceptance criteria. The intent of the steps is to opeta l SG-UV-180 for the associated steam flush. Upon investigation it was determined that Step 8.2.2.1.11 of 91HF-lSF03 verified SG-UV-180 was indeed open during the steam flush. Therefore, this TER is closed and requires no
- retest.
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t Test Results Report 91HF-1SG01 Rev. O TCN 15 Page 12 of 18 TER 11: Steps 8.1.2.7, 8.1.2.8; this TER was generated during the results review process. The above referenced steps were not '
4 signed off during the hot steam flushes through the SG-UV-180 line.
The hot steam flushes were performed for equipment protection only and therefore do not have an acceptance cri teria. The intent of the steps is to close SG-UV-180 following the associated steam flushes in preparation for the next steam line flush. Upon investigation it was determined that Step 8.2.4.1.13 of 91HF-lSF03 verified SG-UV-180 was indeed closed following the steam line flush. Therefore, this TER is closed and requires no retest.
TER 12: Steps 8.1. 3. 7, 8.1. 3. 8; this TER was generated during the results review process. The above referenced steps were not signed off during the hot steam flushes through the SG-UV-171 '
line.
The hot steam flushes were performed for equipment protection only and therefore do not have an acceptance crit eria. The intent of the steps is to close SG-UV-171 l following the associated steam line flush in preparation for the next steam line flush. Upon investigation it was determined that due to testing ' work arounds" SG-UV-171 was the last MSIV flushed through instead of SG-UV-181.
Therefore, due to the out of sequence testing it was not necessary to close SG-UV-171 1.e. Step 8.1.5 which required all MSIV's to be open applied to SG-UV-171 instead of SG-UV-181. This TER is closed and requires no retest.
Test Results Report 91HF-lSG01 Rev. O TCN 15 Page 13 of 18 TER 13: Steps 8.9.6.19 through 8.9.6.33 inclusive; thes.e steps were signed off in the TER 02 retest. It was resolved by using the TER 02 retest as the verification of the steps.
. Therefore, this TER is closed and requires no retest.
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Test Results Report 91HF-1SG01 Rev. O TCN 15 Page 14 of 18 F. CONCLUSIONS With the retest exceptions noted under Recommendations the four JHSIV's (SG-UV-170,171,180 and 181), two MSlV Bypass Valves (SG-UV-169 and 183), and six Steam Trap Valves (SG-UV-1133,1134, 1135A, 1135B, ll36A and 1136B) met their acceptance criteria of this Precore HFT Test. These valves by meeting their acceptance criteria have demonstrated they are capable of fulfilling their safety related functions. See Section 3.2 of this procedure for the licensing commitment references.
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Test Results Report 91HF-ISG01 Rev. O TCN 15 Page 15 of 18 G. RECOMMENDATIONS
! 1) Additional Testing:
a) Perform retest per TER 04 This vill require stroking MSIV 4
SG-UV-170 hot to observe the operation of the related "B" Train logic circuit for the SESS panel. This retest should be performed during Post Core HFT or when conditions permit.
b) Perform retest per TER 05. This vill require stroking MSIV' "
SG-UV-180 hot to . observe the operation of the related "A" Train logic circuit for the SESS panel. This retest should be performed during Post Core HFT or when conditions permit.
c) Perf orm rete,et per TER 06. This will require stroking MSIV SG-UV-180 ho,t to observe the operation of the related "B" Train logic circuit for the SESS panel. This retest should be performed during Post Core HFT or when conditions permit.
d) Perf orm retest per TER 08. This will require exercising MSIV SG-UV-180 hot approximately 107. to verify the operation of the "B" Train Excercise Mode (acceptance criteria 2.1.2.2).
This retest should be performed during Post Core HFT or when conditions permit.
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Test Results Report 91HF-lSG01 Rev. O TCN 15 Page 16 of 18 e) A review of the 90HF-1ZZ01, Precore Hot Functional Testing I
Controlling Document, test log revealed that between May 13, 1983 and July 1,1983 there were approximately 46 log entries
. (27 during June) that describe problems encountered with or operational concerns about the MSIV's. Two of the log entries documented requests made by the NRC for a demonstration of the operability of the MSIV's following repairs. Consequently, even though all but one of the acceptance criteria for this test were met it would prudent to reverify the operability of all four MSIV's during Post Core HFT or when conditions permit.
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- 2) Test Techniques:
a) Incorporate TCN's 01, 03, 04, 05, 06, 07, 08 (modified by TCN 10), 09, 10, 11, 12, 13, 14 and 15 inte the test l
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b) To reduce confusion and the possibility of errors, the hot steam flushes should be consolidated into either this I procedure or 91HF-1SG03, Precore Turbine Bypass Control System.
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Test Results Report 91HF-1SG01
" Rev. O TCN 15 Page 17 of 18 c) The Data Acquisition and Retrieval Terminal (DART), if available, HEATUP program should be used during*the preliminary hot steam flushes through the MSlV's. Pertinent
, plant parameters for plant monitoring and historical records should be simultaneously recorded using the DATA TREND option of the HEATUP program. The suggested frequency is 1 calculation pet minute during cooldowns and 1 calculation per 10 minutes during the recovery heatup.
- 3) Further Use of Test:
The MSIS response time and exercise mode test sections should be extracted, with the TCN's incorporated, and used as a basis for the required surveillance procedures.
- 4) Acceptance of Tes't:
The Test Results Reviewer recommends that TWG approve the test results on the basis that all acceptance criteria were met except the acceptance criteria associated with TER 08 and this has becn identified for retest during Post Core HFT.
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f M .({Ad E.T. Childress, Jr. /"j / - '
APS Hot Functional Startup. Engineer, Level III
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. Tcst Razults Raport 91HF-lSG01 Rev. O TCN 15
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1 APPENDIX A
, ACCEPTANCE CRITERIA CROSS REFERENCE I l
ACCEPTANCE SG-UV- SG-UV- SG-UV- SG-UV- SG-UV- SG-UV- .
CRITERIA 170 171 180 181 169 183 Manual Slow Op. 2.1.1.1 2.3.1.1 2.2.1.1 2.4.1.1 2.6.1 2.7.1 "A" Train Pass Pass Pass Pass Pass Pass Exercise Mode 2.1.1.2 2.3.1.2 2.2.1.2 2.4.1.2 N/A N/A i "A" Train Pass Pass Pass Pass N/A N/A Manual Slow Op. 2.1.2.1 2.3.2.1 2.2.2.1 2.4.2.1 2.6.2 2.7.2 "B" Train Pass Pass Pass Pass Pass Pass Exercisa Mode 2.1.2.2 2.3.2.2 2.2.2.2 2.4.2.2 N/A N/A' "B" Train TER 08 Pass Pass Pass N/A N/A Fast Close Op. 2.5.1.1 2.5.3.1 2.5.1.1 2.5.3.1 N/A N/A a
"A" Train Pass Pass Pass Pass N/A N/A Fast Open Op. 2.5.1.2 2.5.3.2 2.5.1.3 2.5.3.3 N/A N/A "A" Train TCN 13 TCN 13 TCN 13 TCN 13 N/A N/A Fast Close Op. 2.5.2.1 2.5.4.1 2.5.2.1 2.5.4.1 N/A N/A "B" Train Pase Pass Pass Pass N/A N/A i Fast Open Op. 2.5.2.2 2.5.4.2 2.5.2.3 2.5.4.3 N/A N/A "B" Train TCN 13 TCN 13 TCN 13 TCN 13 N/A N/A MSIS Response Time 2.8.1.1 2.8.3.1 2.8.2.1 2.8.4.1 2.8.5.1 2.8.6.1 "A" Train (f 5 sec.) 3.12 sec. 3.04 sec. 3.08 sec. 3.24 sec. 3.5 sec. 4.0 sec.
l MSIS Override op. 2.8.1.2 2.8.3.2 2.8.2.2 2. 8. '4 . 2 2.8.5.2 2.8.6.2 "A" Train Pass Pass Pass Pass Pass Pass MSIS Response Time 2.8.1.3 2.8.3.3 2.8.2.3 2.8.4.3 2.8.5.3 2.8.6.3 "B" Train (f 5 sec.) 3.2 sec. 3.0 sec. 3.06 sec. 3.16 sec. 4.6 see. 4.08 sec.
MSIS.0verride op. 2.8.1.4 2.8.3.4 2.8.2.4 2.8.4.4 2.8.5.4 2.8.6.4 "B" Train Pass Pass Pass Pass Pass Pass 1
Loss of Power 2.9 2.9 2.9 2.9 2.9 2.9 l Response Pass Pass Pass Pass Pass Pass ACCEPTANCE SG-UV- SG-UV- SG-UV- SG-UV- SG-UV- SG-UV-CRITERIA 1333 1134 1135A 1135B ll36A 1136B l
MSIS Response Time 2.10 2.10 2.10 2.10 2.10 2.10 (1 5 sec.) 0.15 sec. 0.25 sec. 0.66 sec. 0.26 sec. 0.41 sec. 0.14 sec.
Loss of Power 2.9 2.9 2.9 2.9 2.9 2.9 Response Pass. Pass Pass Pass Pass Pass
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