ML20087D970
| ML20087D970 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 06/05/1995 |
| From: | AFFILIATION NOT ASSIGNED |
| To: | |
| References | |
| OLA-3-I-MOSB-37, NUDOCS 9508110248 | |
| Download: ML20087D970 (5) | |
Text
{{#Wiki_filter:. m V l & cf 2 4 g z 5 -- O c h - 3 bl6/95 ' %-M540' ~37 ,n[ 'l Exhibit M,page I of h -l -t' CKETED ~ TIME LINE SEQUENCE OF EVEN USNRC t TIME EVENT l 12-16 hours I&C used new calibration obu( pf 55 before-calibrate temperature switches for the cooling-installation . water jacket high temp 0Fh29Rltha first engine tested un ,p;3$3pg9pedure. 5-23-90 1202 CDT I&C installed the 3 switches, the little air M switch was cleaned and the engine was put in m " remote". 1226 First start, normal start 1228 Engine tripped after 60-90 seconds run. Alarms: 1) Lo Turbo Oil Pressure 2) Hi Jacket Water Temp 3) Lo Jacket Water pressure dl NOTE: First alarm not clear due to error by operator. Beset " Test button" accidently instead of ll! " Silence Alarm button" ljl Engine declared INOP action statements & im 's ]l 3 initiated 1310 All parameters reset for second restart (Normal restart) Engine Restarted 1312 Engine tripped after 60-90 seconds run. Alarms a) Lo pressure turbo lube oil { b) Lo Jacket water pressure .yj '[I NOTE: I&C Personnel at each switch with leak 4: detection (snoop) soap to check for venting - 9p He switches venting. E 1412 All parameters reset for third restart (Emergency Start) engine restarted r e i 4 Notripsornalfunctionannunicatorslit[l I-NOTE: 1425 Engine stopped after 13 minute run.] I !-{ { t i 1445 All parameters reset for Fourth' restart (Norsial; y; Start) Engine restarted
- i
- l 1 (NOTE:
No abnormal indicators)' 'c !1 e. 1449 Engine stopped af ter 4 minute run.. a' i ,l [ i e i +; i, i _8 i 6 j N rh' ' A xvr E 37 L ? ^ 9508110248 950605 ^ PDR ADOCK 05000424 0 PDR
g._.,. ' + ('
- ~
5 r f 9 p ,ue fi [. ~ gft-4! DOC ii a;,, ,t e s \\ S' k, ; ,%s f, 4 ' 4 e w- .v no e-r. t l' 4 s s r u l t.. b p i t i+ l s 1 . j i b L.. 1) k M 4 0 x. ~ y y# 299: a .g sk sgy - 'ws5:~ e 4 Eq Wm= . re \\- 3 U$ ~ N "8 g.s i '. k, r 3fg ${e g. E R i 1 J* . _..., -.. -.. ~.. _.. _.
F Exhibit Y,page Of f UNIT ONE ~B" DIESEL GENERATOR SEQUENCE OF EVENTS 15 1925 Trouble shooting urgent'MWO 19002711.for'1-2403 G4-002 approved for work by USS Steve Chestnut _._. Pre fabricated pressure gauges'and fittings in I&C I shop..Also blew. lines to-try to assure no moisture-i or trash gets into lines when these 4 gauges are installed. 2-60 pound & 2.100 pound gauges - all-M&TE calibrated VP' numbers are on MWO. I&C - Bob Neal, Wayne Belwig, Bill Whaley, Mark Briner- ~ i 1958 Ops personnel San Bart, Greg Moxley, Mark Jackson-i and Bill Dunn preparing D/G for-start per procedure-13145-1 2012 I&C installcd 1/4" fittings on gauges and blew out 1/4* tygon tubing. -G 2035 . I&C began running tubing and hooking up all 4 l gauges. 1 NOTE: When-first air line to first. temp switch (A) was-ji disconnected a puff of air was detected. The neoond-
- i mir line (B) disconnected with a definite puff of
- i air. The third line (C) disconnected with a g3 defir.ite puff of air. Also all fittings were swagelok and no' goop was used on those fittings. .e 1 2105 I&C assured gauges are r,eroed with'no pressure and lj completed connections 'j rt 2108 I&C informed Operations ready to run D/G (Mark lf Briner, San Bart) .pl li f 2110 Control Room and.PEO'a' set.up communications. PEO .f; Jackson opened the turbo lube oil bypass valve. }li e (TLOBV) o 2113 Start button pushed (operational) for first trouble f, shooting test 2114 Jackson went to close'TLOBY. i 2115 Control Room announces " Start 1B D/G stand clear" i 1i 2118 D/G started 55 seconds later - tripped 2119 3 alarms - 1. Turbo Lube Oil Lo Pressure 2. 81 Temp Jacket Water 3. Low Pressure Jacket' Water P3 gauge read - 43 (NOTE: Should have gone above 52.5) 117 A switch read 1.5 2.0 3.5 119 B switch read 2.4 2.5 3. I 118 C switch read 2.4 '3.8 6.4 l
o Exhibit M,page 3 or V s;
- f
21?4 Preparation for second test began. Marc Jackson 3 opens TLOBY.- 2135 D/G 1B starting announcement from Control Room 2136 D/G 1B started. Marc Jackson closed TLOBY. j 2137 D/G 1B tripped after 60 second run. Same three alarms. A B C 117 119 118 1.5 2 3.5 2 2.5 5.5 P3 read.41.5 psi i, 3 temp switch gauges maximum reading at approx. 5.5 psi i 2140 Snooped tygon connections. No leaks detected. 2148 In preparation for third test. Three temp switches t connected to air supply with pressure gauges and tygon tubing were removed. 2153 Control Room announced, " Ready to Start D/G"" 2154 Operational button pushed. TLOBY opened by Jackson. 5 2156 D/G started. (Third test) TLOBY closed. O! ?,, P3 gauge read - 47 psi ' ii ' A & C temp switches observed venting at a noticeable k! rate. B venting also but not nearly as much. li; p, 2157 DG tripped after 60 second run. Alarms Lo pressure l> turbo oil and Lo pressure jacket water. L 2205 D/G restarted (fourth test) P3 gauge read - 61.5 psi - running good. i 2210 DG manually stopped. 2239 Preparation for fifth test (Emergency start) bled air off all 3 temp switches.- All 3 switches had
- i puff of air released when air line was disconnected.
Reconnected air lines. ,s I- / 1 a.,-
,i W [ ~,' ExhibitM.pageA{ OL t -[ 2240 " Ready.for Emergency Start" control room announcement. TLOBY opened. 2254 Emergency start TLOBY closed. P3 gauge went up to 60.5 then dipped to 55 at trip then backup to 61.5. 2256 Tripped Hi temp jacket water alarm l ~ NOTE: Actual temp of Jacket water = 155 Y but trip setpoint = 200 F 2310 Cracked the 3 temp switches to bleed off air A had puff of air B had no air C had no air 2336 Sixth Test._ _ Emergency D/G start - 1 minute 10 l seconds then tripped. Snoop testing all 3 temp switches to see if venting during run A partial venting, B venting, C venting 2337 Tripped after 1 minute 10 seconds run. Same alarms as fifth trip. 5/24/90 0100 CST Replacing all three (3) Jacket water switches with original switches removed earlier with testing to resume on day shift. A had puff of air when line was removed. B did not have air pressure when line was removed. L-C did not have air pressure when line was removed. QC inspector J. C. Harvey witnessed the removal'and reinstalled of switches. 0200 Switches have been replaced and those removed have been bagged and tagged and placed in cabinet C-8_in I&C Shop Class "B" storage. 4 il 's
- i
-}}