1. ABNORMALITY REPORT OF BFP-2 (11KV, 1100kW, ANSALDO Make)
Page 1 of 4
CPP-CPSU/E/M-103/2023
Date: 13/01/2023
Sub: Abnormality report of BFP-2 tripped on “49 (MPTTL)” on dated
12/01/2023
Date & Time of Event: BFP-2 tripped at 03:52:05 Hrs. on 12/01/2023.
Effect on Plant:
Nil
Description of events:
Before event, BFP-2 was running for TG-1 and BFP-1 was on standby.
At 03:46:56.204 thermal content exceed alarm came on BFP-2 relay.
At 03:52:04.924 relay gave tripping command (86B-self reset) on 49
(Thermal O/L-MPTTR) and BFP-2 motor tripped. Subsequently, at
03:52:08.582 trip command from DCS operated.
Process started BFP-2 again at 04:04:59.904, but at 04:41:07:340 BFP-2
tripped on trip command from DCS (front journal bearing temperature
high).
Relay events:
BFP-2 Tripped on “49- Thermal Overload”:
Date & Time Signal name Status Additional info Cumulative
Time
03:46:56:204 3Ith>M(1)
BLK_RESTART
True Thermal content
exceeded alarm.
0
03:46:56:204 MV(4) Q4 True Restart Inhibit 0
03:46:56:204 MV(4) Q5 False Restart Enable 0
03:51:33:379 3Ith>M(1)
ALARM
True 00:04:37.175
03:52:04:924 3Ith>M(1)
OPERATE
True 49- Thermal O/L
Operated
00:05:08.720
03:52:04:924 Master Trip(2)
TRIP
True 86B 00:05:08.720
03:52:04:924 MV(2) Q5 True 86B OPTD 00:05:08.720
2. ABNORMALITY REPORT OF BFP-2 (11KV, 1100kW, ANSALDO Make)
Page 2 of 4
03:52:04:924 MV(3) Q3 True 49_OPTD (TH
O/L)
00:05:08.720
03:52:04:987 MV(1) Q8 False BKR ON 00:05:08.783
03:52:04:992 MV(1) Q3 True BREAKER OFF 00:05:08.788
03:52:05:014 MV(3) Q3 False 49_OPTD (TH
O/L)
00:05:08.810
03:52:08:582 MV(1) Q6 True PR/B/W TEM
HIGH TRIP
00:05:12.378
03:52:10:532 MV(1) Q6 False PR/B/W TEM
HIGH TRIP
00:05:14.328
03:56:02:859 MV(4) Q5 RESTRT ENABLE 00:09:06.655
04:04:59:904 MV(1) Q8 True BKR ON 00:18:03.700
04:04:59:919 3I>(1) START L1,L2 00:18:03.715
04:04:59:927 3I(1)
HIGH_ALARM
True 00:18:03.723
04:04:59:927 3I(1)
HIGH_WARN
True 00:18:03.723
04:05:01:334 MV(2) Q2 False CLS/ON CMD FM
DCS
00:18:05.130
04:41:07:340 MV(2) Q3 True OFF/TRIP CMD
FM DCS
00:54:11.136
04:41:07:380 MV(1) Q6 True PR/B/W TEM
HIGH TRIP
00:54:11.176
04:41:07:401 I<->O CB(1)
POSITION
open CBXCBR1 switch
position
00:54:11.197
04:41:07:403 CBCM(1)
NO_OPR
22 Breaker Counter 00:54:11.199
04:41:07:403 MV(1) Q8 False BKR ON 00:54:11.199
04:41:07:405 MV(1) Q3 True BREAKER OFF 00:54:11.201
04:41:07:408 I<->O CB(1)
ENA_CLOSE
True 00:54:11.204
04:41:08:838 MV(2) Q3 False OFF/TRIP CMD
FM DCS
00:54:12.634
Analysis:
BFP-2 tripped on thermal after running 05 minutes at 65A-78A. Motor
restart blocked by relay for 04 minutes as per relay thermal curve.
3. ABNORMALITY REPORT OF BFP-2 (11KV, 1100kW, ANSALDO Make)
Page 3 of 4
Oscillographic Record :
Attached in Annex-A, retrieved from REM-620 of BFP-2
Remedial action:
Suggestion given for provision of tag/alarm for motor tripped on "Thermal
overload" at DCS for BFP motors vide suggestion No.: 14004 on dated
12/10/2022.
QEHSEn (ISO 14001, 45001, 9001 & 50001) related impact:
Nil
4. REM620 - 1 - 12/01/2023 / 2:46:56.204 AM
13/01/2023 / 11:53:17 AM
SIGRA 4.59
02AE0049_2023_1_12_2_46_56_204.CFG
REM620
File path:
MPLPISO_OHSAS SERVER1 CPP_CPSU_FILE LISTM-103_TRIP REPORTS2023BFP-2 TRIPP ON MPTTRDR & EVENT02AE0049_2023_1_12_2_46_56_204.CFG
Start time: 12/01/2023 2:46:55.204 AM
Sample rate: 800 Hz
Value representation:primary
Record type: COMTRADE
ANNEXURE-A
5. REM620 - 2 - 12/01/2023 / 2:46:56.204 AM
13/01/2023 / 11:53:18 AM
SIGRA 4.59
02AE0049_2023_1_12_2_46_56_204.CFG
Time in ms Measuring Signal Instantaneous R.M.S.
Cursor 1: -553.3 K1:IL1 A -75.265 A 65.768 A
Cursor 2: 266.1 K1:IL2 B 6.2482 A 65.245 A
C2 - C1 819.4 K1:IL2 B - K1:IL1 A 81.5132 A -0.523 A
Trigger
12/01/2023
2:46:56.204 AM
t/s
-0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8
K1:IL1 A/ A
0
20
40
t/s
-0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8
K1:IL2 B/ A
0
20
40
t/s
-0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8
K1:IL3 C/ A
0
20
40
DR-1
6. REM620 - 3 - 12/01/2023 / 2:46:56.204 AM
13/01/2023 / 11:53:18 AM
SIGRA 4.59
02AE0049_2023_1_12_2_46_56_204.CFG
t/s
-0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8
AUTO CLS CMD _DCS
BRKR IN SERVICE
BRKR ON
RESTRT INHIBIT
RESTRT ENABLE
49_BLK_RESTRT
7. REM620 - 1 - 12/01/2023 / 2:51:33.379 AM
13/01/2023 / 11:50:39 AM
SIGRA 4.59
02AE0050_2023_1_12_2_51_33_379.CFG
REM620
File path:
MPLPISO_OHSAS SERVER1 CPP_CPSU_FILE LISTM-103_TRIP REPORTS2023BFP-2 TRIPP ON MPTTRDR & EVENT02AE0050_2023_1_12_2_51_33_379.CFG
Start time: 12/01/2023 2:51:32.379 AM
Sample rate: 800 Hz
Value representation:primary
Record type: COMTRADE
8. REM620 - 2 - 12/01/2023 / 2:51:33.379 AM
13/01/2023 / 11:50:40 AM
SIGRA 4.59
02AE0050_2023_1_12_2_51_33_379.CFG
Time in ms Measuring Signal Instantaneous R.M.S.
Cursor 1: -0.0 K1:IL1 A -18.457 A 77.011 A
Cursor 2: -629.5 K1:IL1 A -10.220 A 76.873 A
C2 - C1 -629.5 K1:IL1 A - K1:IL1 A 8.237 A -0.138 A
Trigger
12/01/2023
2:51:33.379 AM
t/s
-0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8
K1:IL1 A/ A
0
25
50
t/s
-0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8
K1:IL2 B/ A
0
25
50
t/s
-0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8
K1:IL3 C/ A
0
25
50
DR-2
9. REM620 - 3 - 12/01/2023 / 2:51:33.379 AM
13/01/2023 / 11:50:40 AM
SIGRA 4.59
02AE0050_2023_1_12_2_51_33_379.CFG
t/s
-0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8
SPRING CHRGED
BRKR IN SERVICE
BRKR ON
RESTRT INHIBIT
49_BLK_RESTRT
49_ALARM
10. REM620 - 1 - 12/01/2023 / 2:52:04.924 AM
13/01/2023 / 11:48:30 AM
SIGRA 4.59
02AE0051_2023_1_12_2_52_4_924.CFG
REM620
File path:
MPLPISO_OHSAS SERVER1 CPP_CPSU_FILE LISTM-103_TRIP REPORTS2023BFP-2 TRIPP ON MPTTRDR & EVENT02AE0051_2023_1_12_2_52_4_924.CFG
Start time: 12/01/2023 2:52:03.924 AM
Sample rate: 800 Hz
Value representation:primary
Record type: COMTRADE
11. REM620 - 2 - 12/01/2023 / 2:52:04.924 AM
13/01/2023 / 11:48:31 AM
SIGRA 4.59
02AE0051_2023_1_12_2_52_4_924.CFG
Time in ms Measuring Signal Instantaneous R.M.S.
Cursor 1: -1000.0 K1:IL1 A -104.30 A 26.074 A
Cursor 2: 0.0 K1:IL1 A -109.28 A 77.244 A
C2 - C1 1000.0 K1:IL1 A - K1:IL1 A -4.98 A 51.170 A
Trigger
12/01/2023
2:52:04.924 AM
t/s
-0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8
K1:IL1 A/ A
0
25
50
t/s
-0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8
K1:IL2 B/ A
0
25
50
t/s
-0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8
K1:IL3 C/ A
0
25
50
DR-3
12. REM620 - 3 - 12/01/2023 / 2:52:04.924 AM
13/01/2023 / 11:48:31 AM
SIGRA 4.59
02AE0051_2023_1_12_2_52_4_924.CFG
t/s
-0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8
DCS I/L FOR MANUAL ST
SPRING CHRGED
BRKR IN SERVICE
BRKR OFF
BRKR ON
RESTRT INHIBIT
49_OPERATE
49_BLK_RESTRT
49_ALARM
46_START
