ML20080C478
| ML20080C478 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde, 05000000 |
| Issue date: | 09/07/1983 |
| From: | AFFILIATION NOT ASSIGNED |
| To: | |
| Shared Package | |
| ML20080C249 | List: |
| References | |
| FOIA-83-609 91HF-1ED01, 91HF-1ED01-R00, 91HF-1ED1, 91HF-1ED1-R, NUDOCS 8402080107 | |
| Download: ML20080C478 (4) | |
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TEST RESULTS REPORT PROCEDURE 50.
91HF-1ED01 PROCEDURE TITLE Main Stea:s Traps and Drain Valves Hot Functional Test REVISION AT THE COSDIENCDIENT OF TESTING 0
DATE 5/27/83 5/27/83 REVISION AT COMPLETION OF TESTING 0
DATE LATEST TEST CHANGE NOTICE NO.
TCN 002 DATE 6/8/83 DATES OF TEST PERFOR3!ANCE 6/5/83 to 6/15/83 PAGE 1 0F 4 Review and Aonroval of Test Results M
DATE:
7 PREPARED BY:
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DATE:
CROUP SUPERVISOR REVID1:
DATE:
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TEST WORKING GROUP MEETING NUMBER:
PLANT REVIDJ BOARD MEETING NUMBER:
DATE:
QUALITY ASSURANCE REVIDI:
DATE:
(Required for Test Results Reports not reviewed by TWG)
STARTUP MANAGER APPROVAL:
DATE:
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Tsst R1;culto R'.part 91HF-1ED01 Rev. O TCN 002 Page 2 of 4 A.
TEST PURPOSE AND SCOPE The puroose of this test was to provide the means for demonstrating the proper operacion of the Main Steam traps, SGN-M01 through SGN-M24, with the Main Steam header pressure greater than 150 psig.
The test also addressed verifying the proper operation of the following Main Steam and Main Turbine drain valves with the Main Steam system at normal operating temperature.
MAIN STEAM Upstream Lead Drains SGN-UV-31 through 34 Downstream Lead Drains SGN-UV-35 thrcugh 38 MAIN TURBINE Turbine Stop Valve Before Seat Drains MTd-HV-242 through 245 Turbine Control Valve Before Seat Drains MTN-HV-246 Turbine Control Valves'1/2/3 Pipe Drains MTN-HV-247 through 249 Cold Reheat Upstream Drains MTN-HV-253 through 260 Cold Reheat Downstream Drains MTN-HV-321 and 322 MTN-HV-380 and 381 MIN-HV-251 and 252 MTN-HV-315 and 316 MTN-HV-374 through 377 B.
COMPLEMENTARY TESTS 1.
Preops Main Steate Isolation Valves and Bypass Valves, 91PE-1SG01 2.
Commissioning Tests Turning Gear and Turbine Drains, 91CM-lMT01 Condensate System, 91CM-1CD01
-Moisture Separator Reheat System, 91Ch1MT02 C.
TEST DESCRIPTION With Main Steam pressure greater than 150 psig, testing of the Main Steam traps was conducted by utilizing a sounding rod to verify each trap exhibited a clicking sound which denotes satisfactory operation.
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r T::;ct Ratults R2 port 91HF-LED 01 Rev. O TCN 002 Page 3 of 4 With Main Steam piping at normal temperature, testing of the Main Steam and Main Turbine drain valves was conducted by cycling the valves from full ope 1 to fell close and returning to full open using the associated switches on Control Room Panel B06. The Main Steam drain valve operation was verified by monitoring the associated remote position indicating lights and local mechanical position indication. Operation of the Main Turbine drain valves was verified by utilizing the remote position ind1cating lights only since local mechanical indication was not provided.
D.
TEST EVENTS On June 6,1983, began assembling the OFFICIAL TEST PACKAGE and establishing Prerequisites and Initial Conditions for 91HF-LED 01. While placing the Main Steam traps in service to establish Initial Conditions for Section 8.1, several discrepancies (e.g. union and packing leaks) were noted. Upon completion of the discrepancy repairs, the traps were placed "in service.
The traps, however, did not seem to be operating properly. The Test Ditector decided, after discussion with the PSE, to leave the traps in service to see if the traps would clear themselves and proceeded to Section 8.2.
Testing commenced in Section 8'.2, Operational Check cf Main Steam Drain Valves, on June 7,1983. Testing revealed that six out of eight of the drain valves would not fully close when remotely operated causing TER 001,to be generated.
Following the unsuccessful attempt per Section 8.2, the Test Director performed a walk-through of Section 8.1 and found thct all but three traps were not operating. Six work requests were then generated to initiate troubleshooting of the traps. Testing per 91HF-LED 01 was suspended on June 8,1983 until repairs would satisfy Sections 8.1 and 8.2 or until Initial Conditions for Section 8.3 could be met.
Initial Conditions for Section 8.3, Operational Check of Main Turbine Drain Valves, were satisfied on June 10, 1983. Testing per Saction 8.3 immediately followed and was satisfactorily completed without exception.
Upon completion of Work Order 14479, (i.e. troubleshooting of Main Steam Traps), testing per Section 8.1 recommenced on June 13, 1983 and continued until completion on June 15, 1983. During the performance of Seciton 8.1, three traps were found with inlet leaks, however, the leaks did not affect trap operation. TER 001 retest of Section 8.2 immediately followed completion of Section 8.1 and was successfully, completed without exception.
By the completion of the procedure, a total of two non-scope TCNs and one
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TER had been generated against the procedure. The two TCNs corrected typographical errors while the TER, as previously indicated, identified the Main Steam drain valve closure problem.
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E.
TEST RESULTS All of 91HF-LED 01 ACCEPTANCE CRITERIA were successfully met without exception.
Specifically:
1.
All Main Steam traps. SGN-M01 through SCN-M24, were verified to operate properly in Subsection 8.1 meeting the requirements of Subsection 2.1 the Main' Steas trap ACCEPTANCE CRITERIA.
Tact R2culta Raport 91HF-LED 01 Rev. O TCN 002 Page 4 of 4 2.
All Main Steam drain valves, SGN-UV-31 through 38, were verified to operate properly in Subsection 8.2 meeting the requirements of Subsection 2.2, the Main Steam drain valve ACCEPTANCE CRITERIA.
3.
All Main. Turbine drain valves, within the scope of this procedure were verified to operate properly in Subsection 8.3 meeting the requirements of Subsection 2.3, the Main Turbine drain valve ACCEPIANCE CRITERIA.
F.
CONCLUSIONS As indicated in Section E above, all ACCEPTANCE CRITERIA for 91HF-1ED01 were satisfied and the single TER has been closed out indicating the components are operational within the scope of this procedure.
The union steam leaks which were detected during the course of this test were addressed on SFRs lAF-ll8 and ISG-ll6. Engineering resolution to the SFRs states that the unions will be reworked as necessary during the implementation of DCP 1SM-SG-069.
G.
RECOMMENDATIONS 1.
Additional Testing:
The following valves were. treated as a scope exception in this procedure due to not being exposed to normal operating conditions during HFT. Operability must be verified during Power Ascension Testing.
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Turbine Control Valve #4 Pipe Drain:
MTN-UV-250 MSR Heater Steam Supply Pipe Drains MTN-HV-388 A through D MTN-HV-389 A through D 2.
Test Techniques:
No changes are necessary, all TCNs that were written did not change the methods of testing 3.
Other Testing:
The procedure is adequate for performing l
retests following modifications and/or repairs l
involving components within the scope of i,
this procedure.
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