ML20080C409
| ML20080C409 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde, 05000000 |
| Issue date: | 08/25/1983 |
| From: | Grizzard T AFFILIATION NOT ASSIGNED |
| To: | |
| Shared Package | |
| ML20080C249 | List: |
| References | |
| FOIA-83-609 1807B-0978B, 1807B-978B, 91HF-1SF02, 91HF-1SF02-R00, 91HF-1SF2, 91HF-1SF2-R, NUDOCS 8402080077 | |
| Download: ML20080C409 (11) | |
Text
{{#Wiki_filter:- a f, ' f/2c(lma N (4 f 4 y- /G s ~ i z. s.,. lll ..c i. .q y
- a-S.
TEST RESULTS REPORT PROCEDURE N0. 91HF-lSF02 .?- PROCEDUPE TITLE ATMOSPHERIC DIMP VALVE HOT FUNCTIONAL TEST REVISION AT THE COMMENCEMEI;T OF TESTING R0 DATE 5/20/83 R0 DATE 5/20/83 REVISION AT COMPLETION OF TESTING LATEST TEST CHANGE HOTICE NO. 11 DATE 6/24/83 DATES OF TEST PERFORMANCE 6/3/83 through 8/22/83 PAGE 1 OF 11 Review and Aoproval of Test Results PREPARED BY: m Grizzard DATE 8-23-R$ Joe King DATE h,2,Q.- 7%{ TECHNICAL REVIEW: GROUP SUPERVISOR REVIEW: R Be DATE 9,2S -Rf TEST WORKING CROUP MEETING NQ1BER: DATE PLANT REVIEW BOARD MEETING NUMBER: DATE QUALITY ASSURANCE REIVEW: DATE (Required for Test Results Reports not reviewed by TWG) STARTUP MANAGER APEROVAL: DATE 1807B/0978B $(-5 8402080077 831116 i PDR FOIA j GARDE 83-609 PDR l
b..* I y l ? Test Results Report 91HF-1SF02 Rev. O TCN 11 Page 2 of 11 A. TEST PURPOSE AND SCOPE ,;I The purpose of this test was to demonstrate the ability of the Atmospheric Dump Valves, SGA-HV-184, SGB-HV-178, SGB-HV-1SS and SGA-HV-179 to perform the following functions during Pre-Core Hot Functional Testing: Demonstrate the operability of each of the Atmospheric Dump Valves during Het Stand-by Mode 3 conditions by both c1.ectro/ pneumatic controls and by the manual handjacks. Demonstrate the capacity of one of the nitrogen accumulators, SGA-X01B, SGA-X01A, SGB-X01A or SGB-X01B to provide pneumatic gas for up to 10 hours of operation for one Atmospheric Dump Valve. Demonstrate the ability of the Atmospheric Dump Valves to allow a flow of sufficient steam to maintain a controlled reactor cooldown rate from Hot Stand-by, Mode 3 to Cold shutdown, Mode 5 with no core decay heat. Thus, full design capacity testing of the Atmospheric Dump Valves will not be performed under this procedure. ~
o ',.*, f j I Test Results Report 91HF-1SF02 Rev. O TCN 11 Fage 3 of 11 ' -l B. COMPLEMENTARY TESTS _ Preoperational Testing 91PE-1SF03, Atmospheric Dump Valve Preoperational Test Precore Hot Functional Testing 91HF-1ZZO3, Remote Shutdown Hot Functional Test Post Core Testing None Power Ascension Testing 73PA-1SG01, Atmospheric Steam Dump e
A \\ I Test Results Report 91HF-1SF02 Rev. 0 TCN 11 j Page 4 of 11 C. TEST DESCRIPTION ~* ^ Initial Valve Operation of Atmospheric Dump Valves at Mode 3 While controlling plant secondary side with the SBCS, manually crank open and close each atmospheric dump valve, one at a time, using the valve handuheel. It is not required that each valve be opened all the way; only enough to prove that the valve is free of mechanical binding and.that the packing does not leak - excessively. Electro / Pneumatic Stroking at each atmospheric dump valve, full ~ open and full closed. Verify stroke times are less than 60 see in opening and less than 20 seconds in closing. Int:rgrated Nitrogen Capacity Testing of One ADV & Accumulator i Over a ten hour period stroke an ADV 10 times (approx. every hour) using only the nitrogen accumulator as a paeumatic supply. 2 P n ' ~
.~,.-,, 't Test Results Report 91HF-lSF02 Rev. O TCN 11 Page 5 of 11 Electro / Pneumatic Operation of ADV From Mode 3 to Mode 5 Operate each ADV a minimum of one hour and prove that each valve ~ is capable of establishing a 75'F/hr cooldown rate without being 100% open. 6 y e 9 / l ~ n
g, Test Results Report 91HF-1SF02 Rev. O TCN 11 Page 6 cf 11 ~ -c D. TEST EVDITu Commenced testing June 3, 1983, 0600 hrs., Test Director began signing Section 4 & S. Wrote TCN's 1 and 2 to correct typos and to delete the requirement for certificati m seals. From 1730 hrs. June 3 to 0230 hrs., June 5 testin3 was suspended. 0 9 "TCN 003 was written to delete Step 5.4 as it was not necessary for the nitrogen accumulators to be charged prior to the start of Secti;n 8. Pretest briefing held then began Section 8. Conducted all of Section 8.1.2 which is the stroking of the Atmospheric Dump . Valves using the handjacks. 'No complications and no TER's written. Since the ADVs had never been pneumatically stroked under design pressure, it was determined that it was unsafe to allow anyone in the MSSS Building until the valves were proven safe. This resulted in TER 001 on Steps 8.1.3.2.9, 8.1.3.3.9, 8.1.3.4.9, and 8.1.3.5.9. At approximately 0600 hrs. ADV's 184, 178, 185 and 179 stroked electro / pneumatically. Since the testing conducted earlier this morning had proven the safety of the ADV's retest began under TER 001.at 0702 hrs. June 5, 1983.
.a I* Test Results Report g 91HF-1SF02 Rev. O TCN 11 Page 7 of 11 t -t 1 At 0925 hrs retested ADV 185. Valve indicated 4% open with valve I fully closed. TER 002 was generated to cover this problem. SGA-HV-179 was then retested under m 001. The closing stroke time as measured locally was approximately 19.5 seconds. This step was not signed until DART Data cauld be analyzed. At 1110 hre., June 5, 1983, an attempt was made.to retest SGA-HV-184. The valve did not smoothly track the control signal; therefore, trouble shooting was done under TER 001. At 1240 hrs, retest on ADV ~ 178 began. Valve action open indicated mechanical binding. At 1440 hra stroked SGA-HV-184 'as part of trouble shooting under TE't 001. The valve still failed to track the controller signal. DART Data analyzed as for stroke time on ADV 179. TFR 003 written because close time was greater than 20 sec., also wrote TCN-5 on a -failed Dart Data Point. Retest of SGB-HV-178 began at 2347 hrs. Binding still present, generate 6 TER 004. SRF # ISG-153 was sent to engineering for evaluation of this problem. 0210 hrc., June 6,1983 ratested SGA-HV-179 under TER 003. Retest passed. It appears that previous stroke of the valve cleaned the stack enough for it to naks stroke time, signed off TER 003. Suspended testing on 0305 hrs., on June 6, 1983. Wrote TCN 6 since the preop was not complete. TCN 7 & 3 to correct the wording to "one" ADV for the Nitrogen Accumulator Tut.
l t s*. Test Results Report r i 91HF-1SF02 Rev. O TCN 11 Page 8 of 11
- t At 0801 hrs., June 8, 1983 began the Nitrogen Accumlator Test for At 1126 hrs., testing was discontinued due to inability SGA-HV-179.
to maintain RCS Temperature. k At 0330 hrs., June 11, 1983, began the Nitrogen Accumulator Test for SGA-X01B and ADV-185. SGB-ZO1A was found to leak; therefore, TER 005 was issued. Secured testing from 0430 to 1915 hrs. on June 11, 1983. AI103Ghrs., June 11, 1983 recharged SGB-Z01A to 650 psig and signed off retest of TER 005. At 2005 hrs., wrote TER 006 on problem previously identified by TER 002, i.e., valve indicator rhows valve approximately 8% open when it is actually shut. At 2033 hrs., com.*nced 10 hr. test period. Completed Nitrogen Accumulator Testing at 0819 hrs on June 12, 1983. On June 18 and 19, 1983, the plant was cooled down to fix a leak on an RTD in the RCS, During this thne it was decided to rebuild two of the ADV's per vendor direction to try to correct their jerky motion. kDV's 179 & 184 were selected for rebuild and were worked under Work Order s
- 15505. Thir rebuild is described as part of FCR-1396.
In the event the modifications to ADV 179 & 184 corrected identified problems and the valves functioned correctly the remaining two ADV's would be modified and retested during Post Core Load HFT. - - - -__- - -- - -___--_________________w___
n. 4 Test Results Report 91HF-1SF02 Rev. O TCN 11 Page 9 of 11 At 1006 hrs., June 24, 1983, preparations were made for Section 8.3. Plant was not at Mode 3 (477'F and 1280 psia), TER 07 was written. TCN 11 was written to allow the conduct of sectiona and steps out of sequence. Between 1120 and 1333 hrs., ADV's 184 and '.79 were tested per Section 8.3.2 to prove their ability to control cooldown rate. Secured testing / At 1053 hrs.m June 26, 1983 restarted the test. An attempt was made to retest ADV-184 under TER 01. Valve stroked in a very jerky motion. Testing was suspended at 1730 hrs.- At 1224 hrs., June 27,1983 ADV-184 was retested and was still jerky. TER 008 was written. Resolution depends on SFR #1SG-153. E. TEST RESULTS Remaining problems are listed below: TER 2, 6 - Position indicators on SGB-HV-185 do not indicate the correct valve position indication. FCR 1396 has been issued to change the position indicatica assembly on all of the ADV's. TER 4, 8 - ADV's do not stroke smoothly. SFR #1SG-153 to engineering for written confirmation that this is acceptable. TER 7 Procedure required that tooldown be started at 565'F and 2250 psia, but the plant was at 477'F and 1280 psia.
..." q s 4 Test Results Report ~~ 91HF-1SF02 Rev. O TCN 11 Page 10 of 11 t; This should have no effect in our testing commitment; 3 Ii however, TER 007 renains open until TWG Approval. ADV's SGB-HV-178 and SGA-HV-185 were not tested during the Cooldown Phase of HFI per Sections 8.3.2.4 and 8.3.2.5. This was becruse only ADV's 139 and 184 were rebuilt per Work Order #15505. ~ ADV's SGA-HV-179 & SGB-HV-184 passed stroke time regul.rements however, the valve action was observed to be a jerky step type motion. The vendor Representative indicated the action was inherent in the valve design. Resident Engineering is tasked with confirming this charact-cristic by SFR-ISG-153. Follwing the completion of HFT, DCP ISM-SG-305 was issued which contains FCR-1396 as well as other modifications. Implementation of this DCP involves the valve disassembly and machining on the valve stems, bushing guides, and piston rings as well as the removal of the actuator spring and the installation of an antirotation plate. The machining was ciready done on ADV's 178 & 184 per Work Order #15505; however, the removal of the actuator spring and installation of the antirotation plate are not installed. This DCP will raise considerable question as to the validity of the information that we have gathered in the conduct of this test. During the cotfdect of the Remote Shutdown Hoc Functional Test it was __________________________] ___ m _.________
i , ' u;- y.. s-Test Results Report 91HF-1SF02 Rev.-0 TCN 11 Z ~ Page 11 of 11 '~~ .4 % found that ADV-184 as well as some of the Steam Bypa'ss Control ~ r ~ ~ ~t,. i. ~ Valves apparently would not open with 1200 psig steam in the main I-c. s steam lines. SFR #1SG-163 was generated and sent to engineering. ' This concern is under engineering evaluation. L-; ~ F.' iRECOMMENDATIONS Because of the outstanding-vork required by DCP ISM-SG-305, I 2.' ' ' 'y. = 7._. _ j-{ -' cannot recommend this procedure for approval. The modification ~ required by this des.;,gn change package will void all of the testing that was accomplished under 91HF-1SF02. My final recom- ~ mendation is for a complete retest during post core hot functional testing. s.- s T. Grizzard APS Hot Functional Test Engineer 9 1 O e t e d i 6 ame= __}}