A 4 x 3 7 T o t a 1 3 7 SHEET (S) W l T H COVER
MARINE BOILER DESIGNING SEC.
MlTSUBlSHl HEAVY INDUSTRIES. LTD. I\ NAGASAKI SHIPVARD MACHINERV WORKS
DRAWL Mar 12, 2003 1 SSi [,I1
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TURBO & MARINE MCHIN. DESIG DEPT.
APPROVED 7. .S&%?O~A
5. UZO
CHECKED -
DRAWN ?. 3 CONFERRED
N A M U R A S. z-a-/ 2 3 4
Aux. Boiler ( MAC 25Bx2 )
BOILER TROUBLE
/
SHOOTING LIST
DRAWING NO. REV NO
N 5 7 - 9 9 K - N 5 1 0 /
N SCALE
ORDER
K I ~ / ~ I l TEM
61 500
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
I N D E X
1. BOILER TROUBLE SHOOTING
INDEX
A- 1 DRUM LEVEL HIGH
A-2 DRUM LEVEL LOW
A-3 DRUM LEVEL LOW-LOW
FUEL OIL PRESSURE LOW
FUEL OIL PRESSURE LOW-LOW
ATOMIZING PRESSURE LOW
ATOMIZING PRESSURE LOW-LOW
DRUM STEAM PRESSURE HlGH
DRUM STEAM PRESSURE LOW
FUEL OIL TEMPERATURE HlGH
FUEL OIL TEMPERATURE LOW
FUEL OIL TEMPERATURE LOW-LOW
SMOKE HlGH
IGNITION FAILURE
IGNITION VALIDITY TERM OVER
FLAME FAILURE
FLAME EYE ABNORMAL
F.D. FAN TRlP
PILOT PUMP TRlP
VALVE ABNORMAL
ITEM
ABCIBMS CONTROLLER FAILURE
MAIN SOURCE FAILURE
DC24V SUPPLY UNIT ABNORMAL
BOILER TRlP
CONTROL AIR PRESSURE LOW
WIND BOX TEMPERATURE HlGH
FEED WATER PRESS LOW
FEED WATER PUMP TRlP
BURNER START SEQUENCE REMAINS INACTIVE
CHECK OF INSTRUMENTS (TRANSMITTER, CONTROL VALVE & CONTROL DRIVE)
2. LIST OF EMS INPUT / OUTPUT ! I/O ) AND SET POINT OF ALARM / TRlP CONDITION
SHIP NO. 226 /BOILER TYPE MAC-25B
Ol<IGlN!\IL I
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B
ORIGINAL 2
INTERLOCK
ALARM
INDEX
A- 1 !TEA
DRUM LEVEL HIGH
Set Point for Abnormal Condition
" SEE I10 LIST " SEC. HAS ELAPSED AFTER STEAM DRUM LEVEL EXCEEDED "NOR "SEE 110 LIST" mm".
ACTION TO BE TAKEN
OPEN & ADJUST
CONTROL VALVE
SUPPLY CONTROL AIR OF
6 kg/cm" OR MORE.
SEE INDEX Z
CHECK & ADJUST
SEE INDEX Z
SEE INDEX Z
ESTIMATED CAUSE
MALFUNCTION
OF
CONTROL VALVE
FOREIGN MATERIAL CAUGHT BY VALVE
SEAT.
SLIDING PART OF VALVE HAS STICKED.
CONTROL VALVE HAS BEEN LOCKED
DUE TO L S S THAN 4 kglcm" OF
CONTROL AIR PRESSURE FOR ITS DRIVING.
MALFUNCTION OF VALVE POSlTlONER
MALFUNCTION OF MONITOR SWITCH, DISCONNECTION OF SIGNAL
LINE.
MALFUNCTION
OF
WATER LEVEL
TRANSMlnER
MALFUNCTION OF FWR DRUM WATER
LEVEL TRANSMITER (ELECTRONICS)
MALFUNCTION OF RWL DRUM WATER
LEVEL TRANSMITTER (ELECTRONICS)
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B
ORIGINAL 3
INTERLOCK
ALARM
INDEX
A-2 lTEM
DRUM LEVEL LOW
Set Point for Abnormal Condition
"SEE I10 LIST" SEC. HAS ELAPSED AFTER STEAM DRUM LEVEL LOWERED "NOR "SEE I10 LIST" mm".
ACTION TO BE TAKEN
OPEN & ADJUST
CONTROL VALVE
SUPPLY CONTROL AIR OF
6 kg/cm" OR MORE.
SEE INDEX Z
CHECK & ADJUST
SEE INDEX Z
SEE INDEX Z
CHECK & ADJUST
PLUG OR REPLACE
BOILER TUBE.
ESTIMATED CAUSE
MALFUNCTION
OF
CONTROL VALVE
FOREIGN MATERIAL CAUGHT BY VALVE
SEAT.
SLIDING PART OF VALVE HAS STICKED.
CONTROL VALVE HAS BEEN LOCKED
DUE TO LESS THAN 4 kg/cm2g OF
CONTROL AIR PRESSURE FOR ITS DRIVING.
MALFUNCTION OF VALVE POSlTlONER
MALFUNCTION OF MONITOR SWITCH, DISCONNECTION OF SIGNAL
LINE.
MALFUNCTION
0 F
WATER LEVEL
TRANSMITTER
ABNORMAL CONDITION
OF
FEED WATER LlNE
ABNORMAL CONDITION
OF
BOILER PRESSURE PARTS
MALFUNCTION OF CONTROL WATER
LEVEL TRANSMllTER (ELECTRONICS)
MALFUNCTION OF RWL DRUM WATER
LEVEL TRANSMITTER (ELECTRONICS)
FEED WATER PUMP STOPPED.
BOILER TUBE DAMAGED.
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B
k
INDEX
A-3 lTEM
DRUM LEVEL LOW-LOW
INTERLOCK
ALARM a BOILER TRIP
Set Point for Abnormal Condition
STEAM DRUM LEVEL HAS REACHED "NOR - "SEE I/O LIST" mm".
ACTION TO BE TAKEN
OPEN & ADJUST
CONTROL VALVE
SUPPLY CONTROL AIR OF
6 kg/cm2g OR MORE.
SEE INDEX Z
CHECK & ADJUST
SEE INDEX Z
SEE INDEX Z
CHECK & ADJUST
PLUG OR REPLACE
BOILER TUBE.
SEE INDEX 0
REMARKS
ESTIMATED CAUSE
MALFUNCTION
OF
CONTROL VALVE
FOREIGN MATERIAL CAUGHT BY VALVE
SEAT.
SLIDING PART OF VALVE HAS STICKED.
CONTROL VALVE HAS BEEN LOCKED
DUE TO LESS THAN 4 kg/cm2g OF
CONTROL AIR PRESSURE FOR ITS DRIVING.
MALFUNCTION OF VALVE POSlTlONER
MALFUNCTION OF MONITOR SWITCH, DISCONNECTION OF SIGNAL LINE
MALFUNCTION
0 F
WATER LEVEL
TRANSMITTER
ABNORMAL CONDITION
OF
FEED WATER LlNE
ABNORMAL CONDITION
OF BOILER PRESSURE PARTS
MALFUNCTION OF
FWC CONTROLLER
MALFUNCTION OF FWR DRUM WATER
LEVEL TRANSMITTER (ELECTRONICS)
MALFUNCTION OF RWL 8, DLSS DRUM
WATER LEVEL TRANSMITTER
(ELECTRONICS)
FEED WATER PUMP STOPPED.
BOILER TUBE DAMAGED.
POWER SOURCE FOR ABC CONTROLLER
HAS FAILUREED.
OPERATION OF PROTECTIVE SYSTEM
STOP BOILER BY EMERGENCY TRIP.
CLARIFY THE CAUSE(S), TAKE CORRECTIVE ACTION, AND THEN,
RE-START BOILER AFTER FEEDING WATER TO NOR. LEVEL.
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-258
k
INDEX
A-4 lTEM
DRUM LEVEL HIGH-HIGH
INTERLOCK
ALARM a BOILER TRIP
Set Point for Abnormal Condition
STEAM DRUM LEVEL HAS REACHED "NOR - "SEE I10 LIST" mm".
ACTION TO BE TAKEN
OPEN & ADJUST
CONTROL VALVE
SUPPLY CONTROL AIR OF
6 kglcm" OR MORE.
SEE INDEX Z
CHECK & ADJUST
SEE INDEX Z
SEE INDEX Z
CHECK AND BLOW THE
DETECTING PIPE OF STEM
FLOW
SEE INDEX O
REMARKS
ESTIMATED CAUSE
MALFUNCTION
OF
CONTROL VALVE
FOREIGN MATERIAL CAUGHT BY VALVE
SEAT.
SLIDING PART OF VALVE HAS STICKED.
CONTROL VALVE HAS BEEN LOCKED
DUE TO LESS THAN 4 kglcm" OF
CONTROL AIR PRESSURE FOR ITS DRIVING.
MALFUNCTION OF VALVE POSlTlONER
MALFUNCTION OF MONITOR SWITCH, DISCONNECTION OF SIGNAL LINE
MALFUNCTION
OF
WATER LEVEL
TRANSMlTiER
MALFUNCTION OF STEAM
FLOW TRANSMITER
MALFUNCTION OF
FWC CONTROLLER
MALFUNCTION OF FWR DRUM WATER
LEVEL TRANSMITER (ELECTRONICS)
MALFUNCTION OF RWL DRUM WATER
LEVEL TRANSMITTER
(ELECTRONICS)
STEAM FLOW TRANMSllTER DETECTS WRONG
STEAM FLOW SIGNAL.
POWER SOURCE FOR ABC CONTROLLER
HAS FAILUREED.
OPERATION OF PROTECTIVE SYSTEM
STOP BOILER BY EMERGENCY TRIP.
CLARIFY THE CAUSE(S), TAKE CORRECTIVE ACTION, AND THEN,
RE-START BOILER AFTER FEEDING WATER TO NOR. LEVEL.
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
--
SHIP NO. 226 /BOILER TYPE MAC-25B
.INDEX
B- 1
ORIGINAL ti
lTEM FUEL OIL PRESSURE LOW
INTERLOCK
ALARM
Set Point for Abnormal Condition
"SEE IIO LIST'' SEC. HAS ELAPSED AFTER F.O. BURNING PRESSURE LOWERED BELOW "SEE IIO LIST'.
ACTION TO BE TAKEN
OPEN & CHECK
CONTROL VALVE
SUPPLY CONTROL AIR OF
6 kglcm" OR MORE.
SEE INDEX Z
CHECK & ADJUST
CHANGE, CHECK
&ADJUST PUMP
& STRAINER
CHECK & ADJUST
SEAL ETHYL GLYCOL
INTO SEAL POT
CHECK & ADJUST
CHECK & ADJUST
A
MALFUNCTION
0 F
CONTROL VALVE
REDUCED
DISCHARGE PRESSURE
FROM F.O. PUMP
DETECTING FAULT
OF
ECC. CRT.
ESTIMATED CAUSE
FOREIGN MATERIAL CAUGHT BY VALVE SEAT.
SLIDING PART OF VALVE HAS STICKED.
CONTROL AIR PRESSURE FOR DRIVING HAS
LOWERED BELOW 4 kglcm",
CAUSING VALVE TO BE CLOSED.
MALFUNCTION OF VALVE POSlTlONER
CONTROL SIGNAL LINE DISCONNECTED.
MALFUNCTION OF F.O. PUMP (F.O. PUMP TO
BE STOPPED BY MANUAL), STRAINER
CLOGGED, OR MALFUNCTION OF
DlSCH ARGE PRESSURE CONTROL SYSTEM
MALFUNCTION OF PRESSURE SWITCH
DISCONNECTION OF SIGNAL LINE
F.O. PRESSURE DETECTING LINE CLOGGED
WITH HEAVY OIL.
F.O. LEAK FROM BURNER PIPING
MALFUNCTION OF PRESSURESWITCH
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B
INDEX
8-2
ORIGINAL '7
lTEM FUEL OIL PRESSURE LOW-LOW
INTERLOCK
ALARM 8,
BOILER TRIP
Set Point for Abnormal Condition
F.O. BURNING PRESSURE HAS LOWERED BELOWUSEE I/O LIST".
ACTION TO BE TAKEN
OPEN & CHECK
CONTROL VALVE
SUPPLY CONTROL AIR OF
6 kglcm" OR MORE.
SEE INDEX Z
CHECK & ADJUST
CHANGE, CHECK
& ADJUST PUMP
& STRAINER
CHECK & ADJUST
SEAL ETHYL GLYCOL INTO
SEAL POT
CHECK 8, ADJUST
CHECK & ADJUST
CHECK & ADJUST
REMARKS
MALFUNCTION
OF
CONTROL VALVE
REDUCED
DISCHARGE PRESSURE
FROM F.O. PUMP
DETECTING FAULT
OF
PRESSURE SWITCH
ESTIMATED CAUSE
FOREIGN MATERIAL CAUGHT BY VALVE
SEAT.
SLIDING PART OF VALVE HAS STICKED.
CONTROL AIR PRESSURE FOR DRIVING HAS
LOWERED BELOW 4 kg/cm2g,
CAUSING VALVE TO BE CLOSED.
MALFUNCTION OF VALVE POSlTlONER
CONTROL SIGNAL LINE DISCONNECTED.
MALFUNCTION OF F.O. PUMP (F.O. PUMP
TO BE STOPPED BY MANUAL), STRAINER
CLOGGED, OR MALFUNCTION OF
DISCHARGE PRESSURE CONTROL SYSTEM.
MALFUNCTION OF PRESSURE SWITCH WIRE
DISCONNECTED.
F.O. PRESSURE DETECTING LINE CLOGGED
WITH HEAVY OIL.
F.O.PUMP DOES NOT RUN
F.O. LEAK FROM BURNER PIPING
MALFUNCTION OF PRESSURE SWITCH
OPERATION OF PROTECTIVE SYSTEM
STOP BOILER BY EMERGENCY TRIP.
CLARIFY THE CAUSE(S), TAKE CORRECTIVE ACTION
AND THEN RESET BOILER TRIP, AND RESTART BOILER.
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B
INDEX
c- 1
ORIGINAL 8
lTEM ATOMIZING PRESSURE LOW
INTERLOCK
ALARM
Set Point for Abnormal Condition
"SEE I10 LIST" SEC. HAS ELAPSED AFTER ATOMIZING PRESSURE LOWERED BELOWMSEE I10 LIST".
ESTIMATED CAUSE
ATMIZING SUPPLY STEAM PRESSURE HAS LOWERED (DUE TO LOW DRUM
STEAM PRESSURE)
DISORDER OF SIGNAL FROM PRESSURE SWITCH DUE TO ITS LINE
DISCONNECTED.
MALFUNCTION OF PRESSURESWITCH
ACTION TO BE TAKEN
CHECK & ADJUST
CHECK & ADJUST
CHECK & ADJUST
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SI-IIP NO. 226 /BOILER TYPE MAC-25B
INDEX
c-2
ORIGINAL 9
lTEM ATOMIZING PRESSURE LOW-LOW
INTERLOCK
ALARM &
BOILER TRIP
Set Point for Abnormal Condition
ATOMIZING PRESSURE HAS LOWERED BEL0W"SEE I10 LIST".
ESTIMATED CAUSE
ATMlZlNG SUPPLY STEAM PRESSURE HAS LOWERED (DUE TO LOW DRUM
STEAM PRESSURE)
DISORDER OF SIGNAL FROM PRESSURE SWITCH DUE TO ITS LINE
DISCONNECTED.
MALFUNCTION OF PRESSURESWITCH
ACTION TO BE TAKEN
CHECK & ADJUST
CHECK & ADJUST
CHECK & ADJUST
OPERATION OF PROTECTIVE SYSTEM
STOP BOILER BY EMERGENCY TRIP.
IF ATMlZlNG SUPPLY STEAM PRESSURE REMAINS LOW (LOW STEAM
DRUM PRESSURE), RE-START BOILER AFTER CHAINGING-OVER TO
COMPRESSED AIR.
REMARKS
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B
INDEX
D- 1
ORIGINAL 10
lTEM DRUM STEAM PRESSURE. HIGH
INTERLOCK
ALARM & BNR
START-INTERLOCK
Set Point for Abnormal Condition
"SEE I10 LIST" SEC. HAS ELAPSED AFTER DRUM STEAM PRESSURE HIGHERED ABOVEUSEE I10 LIST"
ESTIMATED CAUSE
BURNER STARTED BY MANUAL OPERATION.
BURNER STOPPED BY AUTO OPEARTION
1) MALFUNCTION OF ACC MASTER TRANSMlllER
2) DISORDER OF MASTER CONTROLLER OR SIGNAL FROM ABC TO
BMS (DUE TO ITS LINE DISCONNECTED)
DISORDER OF E.C.C. CRT, SIGNAL LINE DISCONNECTED.
ACTION TO BE TAKEN
STOP BURNER.
CHECK & ADJUST OR
SEE INDEX 0
ADJUST
OPERATION OF PROTECTIVE SYSTEM REMARKS
P
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SI-IIP NO. 226 /BOILER TYPE MAC-25B
ORIGINAL 11
INTERLOCK
ALARM & BNR
START-INTERLOCK
INDEX
D-2 lTEM
DRUM STEAM PRESSURE LOW
Set Point for Abnormal Condition
"SEE I10 LIST" SEC. HAS ELAPSED AFTER DRUM STEAM PRESSURE LOWERED BELOW "SEE I/O LIST"
AT 'TANKER SERVICE MODE" OR BELOW "SEE I/O LIST" AT "ECO BACK UP MODE'.
ESTIMATED CAUSE
BURNER STOPPED BY MANUAL OPERATION.
BURNER STOPPED BY AUTO OPEARTION
1 ) MALFUNCTION OF ACC MASTER TRANSMITER
2) DISORDER OF MASTER CONTROLLER OR SIGNAL FROM ABC TO
BMS (DUE TO ITS LINE DISCONNECTED)
DISORDER OF SIGNAL FROM ECC CRT DUE TO ITS LINE
DISCHARGED
ACTION TO BE TAKEN
RE-START BURNER OR
CHANGE TO AUTO
CHECK & ADJUST OR
SEE INDEX 0
ADJUST
OPERATION OF PROTECTIVE SYSTEM
WITH DRUM STEAM PRESSURE BELOW 5.0 kg/cmzg, BURNER CAN NOT
BE RE-STARTED, USING A.C.C. AUTO.
SET A.C.C. TO MAN. AND RE-START BURNER, THEN, SET A.C.C.
TO AUTO.
REMARKS
I
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B
INDEX
F- 1 FUEL OIL TEMPERATURE HIGH
INTERLOCK
ALARM
Set Point for Abnormal Condition
"SEE I10 LIST" SECONDS AFTER THE F.O. TEMPERATURE LOWERED BELOW THE LEVEL CORRESPONDING TO
THE VISCOSITY OF "SEE I10 LIST" SEC. R.W. N0.1.
ACTION TO BE TAKEN
CHECK F 0.HEATER OR
HEATING STEAM LINE
CHECK & ADJUST
pp
SEE INDEX Z
ESTIMATED CAUSE
7
TROUBLE
0 F
F.O. HEATER
TOO MUCH HEATING STEAM
DISORDER OF TEMPERATURE CONTROL
SYSTEM
DISORDER OF SIGNAL FROM E.C.C. CRT DUE TO ITS LINE
DISCONNECTED.
6
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B
OKIGINAL 13
i
INDEX
F-2 lTEM
FUEL OIL TEMPERATURE LOW
INTERLOCK
ALARM
Set Point for Abnormal Condition
"SEE I10 LIST" SECONDS AFTER THE F.O. TEMPERATURE LOWERED BELOW THE LEVEL CORRESPOND1 NG
TO THE VISCOSITY OF "SEE I10 LIST" SEC. R.W. NO.l.
ACTION TO BE TAKEN
CHANGE TO A OIL
CHECK & ADJUST
CHECK & ADJUST
CHECK & ADJUST OR
SEE ADJUSTMENT DATA
SEE INDEX Z
ESTIMATED CAUSE
TROUBLE
OF
F.O. HEATER
FAULTY AUTO.
WARMING OF
F.O. LlNE DURING
BURNER STOP
HEATING STEAM INSUFFICIENT
DISORDER OF TEMPERATURE CONTROL
SYSTEM
F.O. RECIRC. MODE HAS NOT BEEN
SELECTED
F.O. PUMP TO BE STOPPED BY MANUAL
DISORDER OF F.O.TEMP CONTROLLER OR INADEQUATE SET POINT
OF F.O.TEMP CONTROLLER
DISORDER OF SIGNAL FROM E.C.C. CRT DUE TO ITS LINE
DISCONNECTED.
P
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B
ORIGINAL 14
INDEX
F-3 lTEM
FUEL OIL TEMPERATURE LOW-LOW
INTERLOCK
ALARM 8,
BOILER TRlP
Set Point for Abnormal Condition
THE F.O. TEMPERATURE LOWERED BELOW THE LEVEL CORRESPONDING TO THE VISCOSITY
OF "SEE 110 LIST" SEC. R.W. NO.l.
ACTIObI TO BE TAKEN
CHANGE TO A OIL
CHECK & ADJUST
CHECK & ADJUST
CHECK
CHECK & ADJUST
SEE INDEX Z
ESTIMATED CAUSE
TROUBLE OF
F.O. HEATER
FAULTY AUTO.
WARMING OF
F.O. LINE DURING
BURNER STOP
HEATING STEAM INSUFFICIENT
DISORDER OF TEMPERATURE CONTROL
SYSTEM
F.O. RECIRC. MODE HAS NOT BEEN
SELECTED.
F.O. PUMP STARTER HAS NOT BEEN
TO BE STOPPED BY MANUAL.
OPERATION OF PROTECTIVE SYSTEM
1 ) IN CASES WHERE THE F.O. TEMPERATURE IS BELOW THE LEVEL
CORRESPONDING TO THE VISCOSITY OF "SEE 110 LISTSEC.,
BURNER START SEQUENCE IS HELD UNDER STAND-BY UNTIL LOW
ALARM IS RESET AFTER COMPLETION OF FURNACE PURGE.
CLARIFY THE CAUSE(S), TAKE CORRECTIVE ACTION, AND THEN
CHANGE TO "D.O. MODE" AND IGNITE BURNER.
2) IN CASES WHERE THE F.O. VALVE HAS ALREADY OPENED,
CARRY OUT THE EMERGENCY BOILER TRlP INTENTIONALY
BY INDUCING THE "F.O. TEMPERATURE LOW-LOW,
CLARIFY THE CAUSE(S), TAKE CORRECTIVE ACTION,
THEN, SELECT "D.O. MODE" AND RESTART THE BOILER
TO ADJUST THE F.O. TEMPERATURE.
DISORDER OF F.O.TEMP CONTROLLER
INADEQUATE SET POINT OF F.O.TEMP CONTROLLER
DISORDER OF SIGNAL FROM F.O. TEMPERATURE INDICATOR DUE TO ITS
LlNE DISCONNECTED.
REMARKS
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B
INDEX
G lTEM
SMOKE HIGH
INTERLO
ALARM
Set Point for Abnormal Condition
"SEE 110 LIST" SEC. HAS ELAPSED AFTER SMOKE CONCENTRATION OF EXHAUST GAS EXCEEDED
ACTION TO BE TAKEN
CHECK & ADJUST
ADJUST F.O. TEMPERATURE
TO
REQUIRED VISCOSITY
SEE INDEX Z
SEE INDEX 0
SEE INDEX Z
CHANGE-OVER TO PROPER
ATOMIZING SOURCE.
SEE INDEX Z
SEE INDEX Z
CHECK & ADJUST
CHECK & ADJUST
CHECK & ADJUST
RINGEL MANN CONCENTRATION OF " "SEE I/O LIST"
BURNER FIRING
IS FAULTY
MALFUNCTION OF F.D. FAN
FAULTY DETECTION OF AIR FLOW TRASMITTER
MALFUNCTION OF SMOKE INDICATOR (SENSOR FOULED) OR
SIGNAL LINE DISCONNECTED. (BMS IN "SEE I10 LIST")
F.D. FAN IS NOT RUNNING.
MALFUNCTION OF CONTROL DRIVE UNIT
ESTIMATED CAUSE
BURNER ATOMIZER FOULED OR DAMAGED.
BURNER SWIRLER FOULED OR DAMAGED.
BURNER THROAT DAMAGED.
F.O. VISCOSITY INADEQUATE
REQ'D VISCOSITY : 60-85 SEC.
AT RW; N0.1
DISORDER
OF
ATOMIZING
PRESSURE
MALFUNCTION OF ATOMIZING
STM CONTROL VALVE
DISORDER OF ATOMIZING
PRESSURE CONTROL. (ABC
CONTROLLER)
FAULTY DETECTION OF
ATOMIZING TRANSMITTER.
ATOMIZING SOURCE SUITABLE TO
USED FUEL IS DISREGARDED.
C-OILISTEAM
A-OIL/AIR
INLET VANE CONTROL DRIVE UNIT
r N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B
1
INDEX
H- 1 lTEM
IGNITION FAILURE INTERLOCK
ALARM &
BOILER TRlP Set Point for Abnormal Condition
1) DURING BURNER IGNITION PROCESS, FLAME EYE DID NOT CATCH FLAME WITHIN SPARK TIME "SEE I10 LIST" OF PILOT BURNER.
2) F.O. VALVE DID NOT OPEN WITHIN "SEE H-2" MINUTES AFTER BURNER "ON" PUSH BUTTON
ACTION TO BE TAKEN
CHECK & ADJUST
SEE ADJUSTMENT DATA
SEE INDEX M SEE INDEX Y
SEE INDEX I
REMARKS
WAS PRESSED.
PILOT BURNER DOES NOT IGNITE
PILOT BURNER IGNITE, BUT
ESTIMATED CAUSE SPARK PLUG OF PlLOT BURNER HAS BEEN
CONSUMED. MALFUNCTION OF IGNITION SOURCE PlLOT BURNER ATOMIZER FOULED OR
DAMAGED.
INADEQUATE INSTALLED POSITION OF BODY, SPARK PLUG AND ATOMIZER BURNER SWIRLER FOULED.
INADEQUATE PlLOT PUMP OUTLET PRESSURE (REQ'D PRESSURE:] 2-1 6 kglcm2g)
INADEQUATE DRAFT LOSS (REQ'D DRAFT LOSS 20 to 35 mmAq) PlLOT PUMP DOES NOT RUN DISORDER OF FLAME EYE SIGNAL DUE TO ITS
LINE DISCONNECTEDHSEE I10 LIST"
FAULTY DETECTION OF FLAME EYE BY DIRT OF FLAME EYE LENS DAMAGE OF CDS CELL FLAME EYE DOES NOT LOOK AT PlLOT BURNER
FLAME DUE TO INADEQUATE ANGLE OF FLAME EYE OR INADEQUATE IGNITION AIR RATE (20 to 35 mmAq)
F.O. BURNER DOES NOT CATCH FLAME. BURNER IGNITION SEQUENCE REMAINS INACTIVE. (IGNITION FAILURES 5 MINUTES AFTER BURNER START.)
A.C.C. DISORDER I SEE INDEX M
OPERATION OF PROTECTIVE SYSTEM
STOP BOILER BY EMERGENCY TRIP. CLARIFY THE CAUSE(S), TAKE CORRECTIVE ACTION, AND THE RESET BOILER TRlP AND RE-START BOILER
!
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B b
INDEX
H-2
ORIGINAL 17
lTEM IGNITION VALIDITY TERM OVER
INTERLOCK
ALARM 8,
BOILER TRlP
Set Point for Abnormal Condition
F.O. VALVE DID NOT OPEN WITHIN "SEE I10 LIST" MINUTES AFTER BURNER "ON" PUSH BUTTON WAS
PRESSED.
BURNER IGNITION SEQUENCE REMAINS INACTIVE.
(IGNITION FAILURES 5 MINUTES AFTER BURNER START.)
SEE INDEX Y
OPERATION OF PROTECTIVE SYSTEM
STOP BOILER BY EMERGENCY TRIP.
CLARIFY THE CAUSE(S), TAKE CORRECTIVE ACTION
AND THEN, RESET BOILER TRlP AND RE-START BOILER.
REMARKS
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B
ORIGINAL 18
INTERLOCK
ALARM &
BOILER TRIP
INDE
I lTEM
FLAME FAILURE
Set Point for Abnormal Condition
AFTER F.O. VALVE OPENED (BURNER IGNITED), FLAME EYE FAILUREED TO CATCH FLAMES
ACTION TO BE TAKEN
CHECK & ADJUST
ADJUST F.O. TEMPERATURE TO
REQUIRED VISCOSITY
SEE INDEX Z
CHECK & ADJUST
CHECK & ADJUST
CHANGE-OVER TO PROPER
ATOMIZING SOURCE.
SEE INDEX Z
SEE INDEX Z
CHECK & ADJUST
CHECK DRAIN TRAP
CHECK & ADJUST
REMARKS
BURNER FIRING
IS FAULTY
A.C.C.
DISORDER
F.O.LINE IS CROGGED.
ATOMIZING STEAM HAS BEEN CONTAMINATED WITH DRAIN.
FAULTY DETECTION OF FLAME EYE. SIGNAL LINE DISCONNECTED.
"SEE I/O LIST"
OPERATION OF PROTECTIVE SYSTEM
STOP BOILER BY EMERGENCY TRIP, CLARIFY THE CAUSE(S), AND
TAKE CORRECTIVE ACTION. WHEN EXCESSIVE SMOKING IS
OBSERVED, INSPECT BOILER BY BOILER SIDE. THEN RE-START BOILER
AFTER TRlP RESET.
ESTIMATED CAUSE
BURNER ATOMIZER FOULED OR DAMAGED.
BURNER SWIRLER FOULED OR DAMAGED.
BURNER THROAT DAMAGED.
F.O. VISCOSITY INADEQUATE REQ'D
VISCOSITY : 60-85 SEC. AT RW. NO.l
DISORDER
OF
ATOMIZING
PRESSURE
MALFUNCTION OF ATOMIZING
STM CONTROL VALVE
DISORDER OF ATOMIZING
PRESSURE CONTROL.
FAULTY DETECTION OF
ATOMIZING TRANSMlllER
ATOMIZING SOURCE SUITABLE TO
USED FUEL IS DISREGARDED.
C-OILISTEAM
A-OILIAIR
MALFUNCTION OF F.D. FAN INLET VANE
CONTROL DRIVE UNIT
FAULTY DETECTION OF AIR FLOW
TRASMlllER
-- - - - - - - - -
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B
INDEX
J
ORIGINAL 19
FLAME EYE ABNORMAL
INTERLOCK
ALARM &
BOILER TRIP
Set Point for Abnormal Condition
1) DURING STOP OF F.O. BURNER OR PILOT BURNER, FLAME EYE KEPT ON DETECTING FLAMES
FOR LONGER THAN "SEE I10 LIST" SEC.
2) FLAME FAILURE (INDEX H, I) OCCURRED.
ESTIMATED CAUSE
ERRONEOUS ACTION OF FLAME EYE "SEE 1/0 LIST"
( FLAME EYE TURNED ON WITH NO FLAME IN FURNACE )
FUEL IS LEAKING INTO FURNACE AND FIRING.
FLAME FALL IN "INDEX H, I" OCCURRED.
ACTION TO BE TAKEN
CHECK & ADJUST
CHECK FUEL LINE &
PURGE FURNACE
SEE INDEX H, I
OPERATION OF PROTECTIVE SYSTEM
STOP BOILER BY EMERGENCY TRIP.
CLARIFY THE CAUSE(S), TAKE CORRECTIVE ACTION, AND THEN
RESET BOILER TRIP.
REMARKS
IN THE CASE OF FLAME EYE
ABNORMAL DURING
BURNER STOP CONDITION,
ALARM LAMP & BZ ARE
INDICATED.
DURING BOILER STARTING
(BURNER IS STARTING),
THE ALARM ARE INDICATED
AND THE BOILER IS TRIPPED.
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B
No.
ITEM (%€I&)
M I C N (rn
PIIRPCGE (Elm)
ORIGINAL 20
FLAME EYE ABNORMAL 7 P--474 77'1 -?/b BDILER TRIP OR ALARM
Flame eye abnormal is to give an alarm to warn the operator if incorrect flame detector signal (flame eye signal) against the boiler condition came back, and to stop the boiler in emergency mode by immediately shutting down the fuel oil supply to the boiler if such abnormality shoul(l
be too serious to continue running any longer.
7 k-474 7?/ -?lbG;t, 33%69$-r' 7WKEizN LTiE L < f~L\k%&&%tl5%d:3 2, ~ M W ~ Z H L % ~ H E T - P ~ T Z M I ~ , 5 DT;&, 9. w, 5 L ~ E ~ ~ S ~ T ~ ~ E ~ G E R C L ~ J L T ~ ~ E %GZ%?$D@$e@BEL, $4 7 %l$=k';f6,
REMKs (W)
F M EYE CLOSE
FU V/T OPE3 OR BURNER STOP
PILOT
NORMAL POSITION
GN
NORMAL WSITION
OFF
BNR STAKT OITION
ABNORMAL PCGITION FUN(JT1ON (TIMER)
OFF
TRIP *FLAME FAILURE *IGNITION FAILURE
(2sec)
NOTE This timer is hardware timer
to prevent flame failure due
to flame flickering.
CmDITION
ABNORMAL PCGITION RhCTION (TIMEII)
ON
AIAIiM m Before completion of re) furnace purge.
(15sec)
. . . . . , , . . . . . , . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ON
TRIP h'mE After completion of
(pre-) furnace purge.
(Osec)
N57-99K-N5 10 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B
INDEX
K
ORIGINAL 21
lTEM F.D. FAN TRIP
INTERLOCK
ALARM &
BOILER TRIP
Set Point for Abnormal Condition
1. DURING BOILER OPERATION, F.D. FAN STOPPED.
2. MOTOR OVERLOAD OCCURED.
ESTIMATED CAUSE
F.D. FAN STOPPED DUE TO OVERLOAD
"SEE I10 LIST"
MALFUNCTION OF F.D. FAN STARTER
F.D. FAN RUN SIGNAL WIRE DISCONNECTED.
"SEE I10 LIST"
ACTION TO BE TAKEN
CHECK & ADJUST
CHECK & ADJUST
CHECK & ADJUST
OPERATION OF PROTECTIVE SYSTEM
STOP BOILER BY EMERGENCY TRIP.
AFTER CHECKING F.D. FAN FOR BEING RUNNING, RESET
BOILER TRIP, AND THEN, RE-START BOILER.
REMARKS
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B
ORIGINAL 22
INTERLOCK
ALARM
INDEX
L lTEM
PILOT PUMP TRIP
Set Point for Abnormal Condition
1. DURING PILOT PUMP OPERATION, PILOT PUMP STOPPED.
2. MOTOR OVERLOAD OCCURED.
ESTIMATED CAUSE
OVERLOAD CAUSED PILOT PUMP TO STOP.
"SEE I10 LIST"
ACTION TO BE TAKEN
CHECK & ADJUST
SHIP NO. 226 /BOILER TYPE MAC-25B
P
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
ORIGINAL 23
INDEX
M lTEM
VALVE ABNORMAL
INTERLOCK
AL ALARM OR
BOILER TRlP
Set Point for Abnormal Condition
"SEE I/O LIST" SECONDS HAVE ELAPSED A DIFFERENCE BETWEEN THE COMMAND SIGNAL
TO VALVE AND THE ACTUAL SIGNAL.
ESTIMATED CAUSE
VALVE COMPRESSED AIR PRESSURE LOWERED
(REQ'D PRESSURE : 5 kg/cmZg OR MORE)
SLIDING PART OF VALVE HAS STICKED.
VALVE SEAT HAS CAUGHT FOREIGN MATERIAL.
FAULT OF VALVE & DAMPER LIMIT SWITCH
ACTION TO BE TAKEN
CHECK AIR SUPPLY BOARD.
CHECK &ADJUST
BURNER PISTON VALVE
BMS INPUT
F.O. PISTON V/V "SEE I10 LIST" ( ON AT CLOSED )
ATOMIZING PISTON V/V "SEE I10 LIST" ( ON AT OPEN )
BNR PURGE PISTON V/V "SEE I/O LIST" ( ON AT CLOSED )
F.O. RECIRC V/V "SEE I/O LIST" ( ON AT CLOSED )
IN THE FOLLOWING VALVE ABNORMAL CONDITION, LET THE BOILERUNDERGO THE TRIP.
1 . "SEE I10 LIST" SECONDS HAVE ELAPSED WlTH ANY ONE OF F.O. VALVES OPENED IN
RESPONSE TO F.O. VALVE "CLOSE' COMMAND FROM THE SEQUENCER.
2. "SEE I10 LIST" SECONDS HAVE ELAPSED WlTH BOTH F.O. FAlLURElNG TO OPEN IN RESPONSE
TO F.O. VALVE "OPEN" COMMAND FROM THE SEQUENCER.
3. "SEE I10 LIST" SECONDS HAVE ELAPSED WlTH ATOMIZING VALVE FAlLURElNG TO OPEN IN
RESPONSE TO ATM VALVE "OPEN" COMMAND FROM THE SEQUENCER.
OPERATION OF PROTECTIVE SYSTEM
LOOK FOR AND DETERMINE THE CAUSES OF THE BURNER PISTON
VALVE ABNORMAL STATES, AND THEN RESTART THE BOILER.
RESETTING THE TRlP INTERLOCK.
REMARKS
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
No.
ITEM (%@%I
tvLTICN (#.a
PURPosE (Ern)
VALVE AND DAMPER ABNORMAL 1x/k7 '77 F57-71<77+] - ~ / b
BOILER TRIP OR AIARM
Valve and damper abnormal is to give an alarm to warn the operator if incorrect feed back signal (limit switch signal) against the order signal from PLC came back, and to stop the boiler i l i
emergency mode by immediately shutting down the fuel oil supply to the boiler l f sucl, abnormality should be too serious to continue running any longer.
/ < r b 7 ' 7 7 F P ' 2 / < 7 7 1 - ~ r ~ G 3 , P L c ~ ~ ~ ~ ; I . Q ~ ~ + { ~ + + [ z ~ L T I E L ( 7'2~ \ y < bz-1' .)/fa l ) f = ~ d a 5 S$fcW, R~WC~~L%O~&%~-~-~~"ZM,I~) 5 0 ~ h 5. &k, 5 L ~ $ ~ & ? ; ~ ~ ~ T T J ~ ~ E ~ L
%G:%? LTC~E%~Z%~EBD%$$~&% L, $4 5 %f$k-J-63
FO V / V #1
FU V / V #2
REC. V / V
Am V / v
BMl PURGE V / V
SHIP NO. 226 /BOILER TYPE MAC-25B
FJmRKs (W)
m m V N
ORIGINAL 24
L. S. WSITION
cZCGE
CLOSE
CLOSE
OPEY
CLOSE
L. S. PCGITION
m E
N O W POSITION
OFF
OFF
ON
ON
ON
BUIWER RUN
ABNORMAL POSITION FUNCTION (TIMER)
ON ALm i
i In case of both (3sec) i IV/V close,
ON iboiler trip. i i TRIP (3sec) j
OFF ALARM (3sec)
OFF TRIP (5sec)
OFF TRIP (10sec)
NORMN. POSITION
ON
ON
OFF
OFF
ON
BURN3 PURGE SEQllENCE
BURNER STOP
tlkmWL POSITION FUNCTION (TIMER)
OFF r n P (IOsec)
OFF TRIP (1Osec)
ON ALARM (1Osec)
OFF AIARM (10sec)
OFF ALRRM (10sec)
N O W POSITION
OFF
NOT BNR PURGE SEQ.
A B N O W PCGITION FUNCTION (T m ON AIARM (3sec)
N O M PCGITION
ON
ABNOM POSITION FLWION (TIMER)
OFF NARM (1Osec)
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B
NDfX lTEM INTERLOCK
0 ABCIBMS CONTROL LER ABNORMAL Alarm &
Boiler Trip
Set Point for Abnormal Condition
AN ABNORMAL CONDITION "OPERATION STOPPED OR "OPERATION STILL CONTINUES" HAS
OCCURRED IN THE ABCIBMS CONTROLLER, AND THE LAMP "ABCIBMS CONTROLLER ABNORMAL"
ON THE BOILER CONTROL PANEL STARTS TO BE ON.
ABNORMAL CONDITION PRESUMABLE CAUSE(S)
STEPS TO BE TAKEN
FOR RESTORATION
ACTUATION OFTHE PROTECTION SYSTEM
(EXECUTION BY THE PROTECTION SYSTEM)
THE CAUSE IS TO BE INVESTIGATED ACCORDING TO THE
"OPERATION AND MAINTENANCE INSTRUCTION",
FOR THE RESTORATION OF THE ORIGINAL CONDITION.
REMARKS
N57-99K-N510 BOILER TROUBLE SHOOTING L I S T
--
S H I P NO. 226 /BOILER TYPE MAC-25B
INDEX
Q
ORIGINAL 26
!TEiAJ
MAIN SOURCE FAILURE
INTERLOCK
ALARM &
BOILER TRIP
Set Point for Abnormal Condition
POWER SUPPLY SOURCE A.C. OF BCP HAS FAILUREED.
ESTIMATED CAUSE
BREAKER(MCB-1) OF CONTROL SWITCH BOARD TURNED OFF.
DISORDER OF RELAY.
(BOILER CONTROL PANEL RAC)
NO-FUSE HAS DAMAGED.
(BOILER CONTROL PANEL NF)
DISCONNECTION OF A.C. SOURCE LINE.
ACTION TO BE TAKEN
CHECK & CORRECT
CHECK & ADJUST
(ONLY ALARM)
CHECK & ADJUST
CHECK &ADJUST
OPERATION OF PROTECTIVE SYSTEM
STOP BOILER BY EMERGENCY TRIP.
RESET BOILER TRIP, AND THEN, RE-START BOILER.
fl
INTERLOCK
R DC24V SUPPLY UNIT ABNORMAL ALARM &
BOILER TRIP
Set Point for Abnormal Condition
POWER SUPPLY UNlT DC24V OF BOILER CONTROL PANEL HAS FAILUREED.
ESTIMATED CAUSE
BREAKER(MCB2) OF BOILER CONTROL PANEL TURNED OFF.
MALFUNCTION OF TRANSFORMER (SR 1 ,SR2)
DISCONNECTION OF A.C. SOURCE LINE.
CTlON TO BE TAKEN
CHECK & CORRECT
CHECK 8, ADJUST
CHECK & ADJUST
NOTES
WHEN ONLY ONE POWER SUPPLY UNlT FAILURES, ALARM LAMP & BUZZER ARE INDICATED.
AND WHEN BOTH TWO UNITS FAILURE, THE ALARM IS INDICATED AND THE BOILERS ARE TRIPPED.
OPERATION OF PROTECTIVE SYSTEM
STOP BOILER BY EMERGENCY TRIP.
CLARIFY THE CAUSE(S), TAKE CORRECTIVE ACTION, AND THEN,
RESET BOILER TRIP, AND THEN, RE-START BOILER.
= lTEM INTERLOCK
s BOILER TRIP ALARM &
BOILER TRlP
Set Point for Abnormal Condition
BOILER TRlP FACTOR HAS WORKED.
ESTIMATED CAUSE AND RESET OPERATION REQ'D ACTION
PRIMARY FACTOR OF BOILER TRlP
1. BOILER TRIP AS WELL AS BOILER TRIP INDICATION
FACTOR HAS IS BEING ILLUMINATED. CHECK & CORRECT
WORKED. CHECK LAMP INDICATIONS AND TAKE
NECESSARY ACTION ACCORDING TO
INDICATIONS.
(1) CARRY OUT BZ-STOP.
(2) CHECK PRIMARY TRlP FACTOR
AND ELIMINATE THE CAUSE.
2. RESET OPERATION (3) RESET BURNER TRIP BY PRESSING
BURNER "OFF' PB.
(4) CARRY OUT LAMP RESET.
(5) RE-START BURNER BY PRESSING
BURNER "ON" PB. SWITCH.
= lTEM INTERLOCK
T- 1 CONTROL AIR PRESSURE LOW ALARM
Set Point for Abnormal Condition
"SEE I10 LIST" HAS ELAPSED AFTER THE CONTROL AIR PRESSURE LOWERED "SEE I10 LIST
ESTIMATED CAUSE ACTION TO BE TAKEN
MALFUNCTION OF PRESSURE SWITCH
FAULTY DETECTION SIGNAL LINE DIISCONNECTED .
OF BMS IN "SEE I10 LIST" CHECK & ADJUST
PRESSURE SWITCH I CLOGGING IN PIPING LEADING TO THE I DETECTION TERMINAL.
DECREASE IN CONTROL CONTROL AIR LEAKAGE
AIR PRESSURE DECREASE IN CONTROL AIR SIURCE PRESSURE CHECK & ADJUST
OPERATION OF PROTECTIVE SYSTEM REMARKS
ORIGINAL 28
ORIGINAL 30
lTEM [NTERLOCK
u WIND BOX TEMP. HIGH ALARM
Set Point for Abnormal Condition
"SEE 110 LIST" HAS ELAPSED AFTER THE WlND BOX TEMPERATURE EXCEEDED THAN "SEE I10 LIST".
ACTION TO BE TAKEN
CHECK & ADJUST
REMARKS
ESTIMATED CAUSE
FAULTY DETECTION
MALFUNCTION OF TEMPERATURE SWITCH SIGNAL
LINE DIISCONNECTED .
OF
TEMP. SWITCH
OPERATION OF PROTECTIVE SYSTEM
i N57-99K-N510 BOILER TROUBLE SHOOTING LIST i
SHIP NO. 226 /BOILER TYPE MAC-25B
INTERLOCK
ALARM
INDD(
v lTEM
FEED WATER PRESS LOW
Set Point for Abnormal Condition
4 SEC HAS ELAPSED AFTER FEED WATER SUPPLY PRESS. LOWERED BELOW SET POINT AT NOR .MODE
OR ECO MODE.
ESTIMATED CAUSE
OVERLOAD CAUSED FEED WATER PUMP TO STOP.
ACTION TO BE TAKEN
CHECK & ADJUST
START STAND-BY
FEED WATER PUMP DISCHARGE PRESS HAS LOWERED. FEED WATER PUMP
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MAC-25B
INDEX
w lTEM
FEED WATER PUMP TRIP
INTERLOCK
ALARM
Set Point for Abnormal Condition
I . OVERLOAD CAUSED BOTH MAlN FEED WATERT PUMPS AT TANKER SERVICE OR IGS MODE.
(BOILER TRIP)
2. OVERLOAD CAUSED BOTH AUX. FEED WATER PUMPS AT ECO MODE.(BOILER TRIP)
ESTIMATED CAUSE
OVERLOAD CAUSED MAIN OR AUX. FEED WATER PUMP TO STOP.
ACTION TO BE TAKEN
CHECK 8, ADJUST
I 1 1 N57-99K-N510 BOILER TROUBLE SHOOTING LIST
SHIP NO. 226 /BOILER TYPE MC-25B
= y-(1/2)
lTEM BURNER START SEQUENCE INACTIVE
INTERLOCK
IGNITION
ALARM & TRlP
Set Point for Abnormal Condition
BURNER SEQUENCE FAILURES TO PROCEED. BOILER TRlP TAKES PLACE FIVE MINUTES AFTER STARTING THE BURNER.
START SEQUENCE
SEQUENCE WlLL NOT START WITH BURNER "ON PB. PRESSED. (WILL NOT STOP)
FURNACE PURGE CAN NOT BE ESTABLISHED.
(FURNACE PURGE LAMP FLICKERS)
IGNITION WlLL NOT START.
"-2 (IGN. LAMP FLICKERS)
ESTIMATED CAUSE 1 ) BOILER TRIP FACTOR IS WORKING. 2) DRUM STEAM PRESSURE IS BELOW 5K
AND F.O. CONTROL IS SET TO AUTO. 3) MALFUNCTION OF STARTISTOP
INPUT CIRCUITS. "SEE I10 LIST"
1 ) BURNER DRAFT LOSS "SEE I/O LIST"
2) AIR CONTROL SET TO MANU. 3) FURNACE PURGE ORD. HAS NOT
BEEN INPUT INTO ABC CONTROLLER. ("SEE I10 LIST" BEEN INPUT ABC CONTROLLER.)
4) AIR FLOW CONTROL IS FAULTY. (ABC CONTROLLER, CONTROL DRIVE UNIT AND AIR FLOW TRANSMITTER)
5) F.D. FAN IS NOT RUNNING. "SEE I/O LIST"
1) F.O. CONTROL VALVE IS NOT SET AT THE OPEN POSITION FOR IGNITION.
2) F.O. CONTROL AND AIR CONTROL ARE IN THE MANUAL MODE.
3) BURNER DRAFT LOSS IS NOT SET AT "SEE I10 LIST"
4) F.O. TEMPERATURE IS AT THE LOW LEVEL. "SEE I10 LIST"
5) BOTH F.O. PUMP IS NOT RUNNING. "SEE I10 LIST"
ACTION TO BE TAKEN 1 ) CANCEL TRIP FACTOR. 2) BELOW 5K, START SEQUENCE
WITH F.O. CONT. TO MAN. 3) CHECK & ADJUST.
1 ) OPEN F.D. FAN INLET VANE.
2) SET AIR CONT. TO AUTO. 3) CHECK WIRING.
4) CHECK & ADJUST. (SEE INDEX Z)
BURNER DRAFT LOSS (AIR FLOW)
=(WIND BOX)-(FURNACE DRAFT) 1) SET F.O. CONT. V/V TO
OPENING OF "SEE I/O LIST"
2) SET TO AUTO.
3) ADJUST F.D. FAN INLET VANE. "SEE I/O LIST"
4) EITHER ADJUSTTHE F.O. TEMPERATURE OR TURN ON
THE F.O. TEMPERATURE BY PASS. 5) START F.O. PUMP
N57-99K-N510 BOILER TROUBLE SHOOTING LIST
INDEX
y- (2/2)
2)F.O.TEMP BY-PASS OR F.E. BY-PASS
HAS BEEN SELECTED.
ESTIMATED CAUSE
3)IGS MODE HAS BEEN SELECTED.
4)MALFUNCTlON OF AUTO SIGNAL,
CIRCUIT,
lTEM BURNER START SEQUENCE INACTIVE
BURNER REFUSES TO
SWITCH TO AUTO 4 KgIcm2 ,CHECK & ADJUST
2)CHECK & ADJUST
INTERLOCK
IGNITION FAILUF
ALARM & TRIP
1)STEAM PRESSURE IS BELLOW 3 Kglcm2
& BURNER IS NOT START
3)CHECK & ADJUST
4)CHECK & ADJUST
BURNER DOES NOT START
(STOP)
AUTOMATICALLY
I
SHIP NO. 226 /BOILER TYPE MAC-25B
"SEE 110 LIST"
1)BURNER IS IN THE MANUAL MODE
2)MALFUNCTION OF STM PRESSURE TRANS.
3)MALFUNCTlON OF START(ST0P) INPUT
SIGNAL CIRCUIT.
"SEE I10 LIST"
I SEE INSTRUCTION MANUAL
:TOP SEQUENCE
NACTIVE
1)SWITCH THE BURNER
CONTROL TO AUTO.
2)SEE INDEX Z
3)CHECK & ADJUST
1 )MALFUNCTION OF STOP SIGNAL
CIRCUIT.
"SEE I10 LIST"
2)BURNERDRAFTLOSSBELOW lSOmmAq
AT AFTER FURNACE PURGE.
BMS IN. "SEE I10 LIST"
1)CHECK & ADJUST
2)OPENF.D.FANlNLETVANE
N57-99K-N510 BOILER TROIJBLE SHOOTING LIST
REQUIRED
SHIP N0.226 /BOILER TYPE MAC-25B
INDEX
z lTEM CHECK OF INSTRUMENTS
INTERLOCK
Set Point for Abnormal Condition
INTSPECTION OF TRANSMITTER, CONTROL VALVE AND CONTROL DRIVE.
ACTION TO BE TAKEN
SET TO SPECIFIED SOURCES.
CHECK AND ADJUST AS
INSPECTION PROCEDURE
CHECK OF ELECTRIC SOURCE AND CONTROL AIR SOURCE
REFER TO DWG. N57-99K-N551 ADJUSTING DATA SHEETS.
CHECK INPUTIOUTPUT CHECK PRESSURE DETECTING LINE
(CLOSURE 8, LEAK OF PIPING)
OF ON-LINED
INSTRUMENT IN
ACCORDANCE WITH
ADJUSTMENT DATA
SHEETS.
CHECK SIGNAL WIRING
(WIRE DISCONNECTION, LOOSE SET
SCREWS)
CHECK LINK UNIT
(STICKING OR RICKm MOVING PARTS
AND LOOSE SETSCREWS)
REMOVE INSTRUMENT FROM PROCESS LINE, AND CALIBRATE
SEPARATED INSTRUMENT INDIVIDUALLY.
':5:-9!4K-LHIO R O l l lilt TilOl,Rl ii Sl lOOTI \C I I S ' i
2. LIST O F BMS INPUTIOUTPUT
- - -- -- - ~ -
FO COIITPO! ; / I , / OPEISI POS~TO1.1
~ J P ? I E ? D ~ P ~ T IGS~ -- --
. - - ~ - ~ - . . ~ ~ - i'lo 1 FO PUlvlP RUbI
~.. - - ~ - - --