DDG-51 DDG-51
DDG 51 CLASS ADVISORY NR 17-94
5 INCH 54 CALIBER AMMUNITION STRIKEDOWN EQUIPMENT
CASUALTY MODE OPERATION PROCEDURES
REF/A/DOC/NAVSEA/15DEC89//
REF/B/DOC/NAVSEA/30APR90//
NARR/REF A IS TECH MANUAL SW323-AJ-MMA-010/88733. REF B IS TECH
MANUAL SW323-AJ-SSM-010.//
RMKS/1. THIS CLASS ADVISORY PROVIDES PROCEDURES FOR CASUALTY
MODE OPERATION OF SUBJ EQPT. CASUALTY MODE OPERATION BYPASSES
SAFETY INTERLOCKS AND IS FOR EMERGENCY USE ONLY. THIS CLASS
ADVISORY PROMULGATES ACN 1/A TO REF A AND ACN 1/B TO REF B.
2. BACKGROUND. THE SUBJ EQPT IS DESIGNED WITH AN EMERGENCY
CAPABILITY FOR OPERATION IN THE EVENT OF ELECTRICAL CASUALTIES.
THIS CAPABILITY IS INTENDED TO PERMIT PLATFORM MOVEMENT TO A SAFE
POSITION, UNTIL THE CASUALTY HAS BEEN CORRECTED AND NORMAL
OPERATION MAY RESUME. THESE PROCEDURES ARE TO BE EMPLOYED ONLY
WHEN NECESSARY TO CONTINUE STRIKEDOWN/UP IN THE EVENT OF ELECTRIC
POWER LOSS OR ELECTRIC CONTROL SYSTEM FAILURE.
3. ACTION. DDG 51 CLASS SHIPS SHALL USE THE PROCEDURES
CONTAINED IN PARAS 4 THROUGH 7 FOR CASUALTY MODE OPERATION.
RECORD THESE CHANGES AS ACN 1/A IN THE RECORD OF CHANGES PAGE OF
REF A AND AS ACN 1/B IN THE RECORD OF CHANGES PAGE OF REF B. FOR
REF A, THESE PROCEDURES CONSTITUTE NEW SUBCHAPTER 2-5, CASUALTY
MODE, OF CHAPTER 2, OPERATION. FOR REF B, THESE PROCEDURES
CONSTITUTE NEW SUBCHAPTER 4-4, CASUALTY MODE, OF CHAPTER 4,
OPERATION. EXISTING SUBCHAPTER 4-4, STANDARD LOG FORM, BECOMES
NEW SUBCHAPTER 4-5. ATTACH A COPY OF THIS ADVISORY TO EACH
MANUAL.
4. SAFETY PRECAUTIONS. THESE SAFETY PRECAUTIONS APPLY TO THE
PROCEDURES CONTAINED IN PARAS 5-7. FAILURE TO COMPLY WITH THE
FOLLOWING WARNINGS COULD RESULT IN PERSONNEL INJURY OR DEATH.
A. CASUALTY MODE OPERATION OF THE EQUIPMENT SHALL ONLY BE
PERFORMED WHEN ALL MEANS TO CORRECT THE ELECTRICAL FAILURE HAVE
BEEN EXHAUSTED AND THE COMMANDING OFFICER HAS AUTHORIZED CASUALTY
MODE OPERATION.
B. IN CASUALTY MODE THE EQUIPMENT IS OPERATED IN A MANUAL
MODE THAT BYPASSES ALL THE SYSTEM ELECTRICAL INTERLOCKS.
EXERCISE EXTREME CAUTION. COMMUNICATION MUST BE ESTABLISHED
BETWEEN ALL LEVELS SERVED.
C. DO NOT OPERATE THE EQUIPMENT WITH THE TRUNK DOORS OPEN.
D. PERSONNEL SHALL NOT RIDE ON THE PLATFORM ASSEMBLY.
E. DO NOT OPEN ANY TRUNK DOOR UNLESS IT IS CONFIRMED THAT
THE PLATFORM IS STOPPED AT THAT LEVEL AND THE PENDANT CONTROL
OPERATOR HAS NO FINGERS TOUCHING THE UP AND DOWN LEVERS.
F. A HAZARD EXISTS WHEN THE 01 LEVEL HATCH IS OPEN. ENSURE
THAT THE STANCHIONS AND SAFETY CHAINS ARE IN PLACE. THE
EQUIPMENT PENDANT CONTROL OPERATOR AT THE 01 LEVEL SHALL BE
SECURED WITH A LIFELINE.
G. EQUIPMENT OPERATION IN CASUALTY MODE SHALL BE FROM THE
01 LEVEL ONLY WITH PENDANT CONTROL AND WITH THE HATCH OPEN.
H. WHEN LOOKING INTO THE TRUNK THROUGH A DOOR SILL GAP,
NEVER EXTEND ANY PORTION OF THE HEAD, BODY OR APPENDAGES,
FLASHLIGHT OR OTHER ITEM THROUGH THE GAP INTO THE TRUNK.
I. PRIOR TO INITIATING PLATFORM MOTION, THE PENDANT CONTROL
OPERATOR SHALL REQUEST CONFIRMATION FROM THE PERSONNEL AT THE
LOWER DECK LEVELS THAT THE TRUNK DOORS ARE CLOSED. DO NOT MOVE
THE PLATFORM IF ANY TRUNK DOOR IS OPEN.
5. PREPARATION.
A. EQPT REQUIRED.
(1) SOUND POWERED TELEPHONES AT EACH LEVEL SERVICED.
(2) FLASHLIGHT AT EACH LEVEL SERVICED.
(3) SHIPPING BAND CUTTER (FOR STRIKEDOWN) OR BANDING
TOOL (FOR STRIKEUP) AT SECOND PLATFORM LEVEL.
(4) ELECTRIC PALLET TRUCK AT 01 LEVEL.
(5) MANUAL PALLET TRUCK AT EACH LOWER LEVEL SERVICED.
(6) PALLET TIEDOWNS IN PALLET STAGING AREA IF PALLETS
ARE TO BE STAGED.
(7) PRY BAR FOR REMOVING BOUND PLATFORM RESTRAINING
BARS.
(8) TOOLS FOR REMOVING DOOR SILLS (ONE HALF INCH DRIVE
SOCKET SET OR COMBINATION BOX/OPEN END WRENCHES).
(9) PENDANT CONTROL ASSEMBLY.
B. PRIOR TO EQPT CASUALTY MODE OPERATION THE FOLLOWING
STEPS SHALL BE TAKEN:
(1) SECURE ELECTRIC POWER TO THE CONTROLLER BY TURNING
OFF THE POWER DISCONNECT SWITCH ADJACENT TO THE
CONTROLLER. TAG OUT THE SWITCH.
(2) VERIFY AVAILABILITY OF LP AIR SUPPLY. CHECK
PRESSURE GAGE AT THE MAIN DECK. DRAIN ANY WATER
TRAPPED IN THE SYSTEM.
(3) ESTABLISH TELEPHONE COMMUNICATIONS BTWN ALL LEVELS
TO BE SERVED.
(4) INSTALL SAFETY STANCHIONS AND CHAINS AROUND THE
HATCHWAY. OPEN THE 01 LEVEL HATCH AND SECURE IT
IN THE OPEN POSITION.
(5) REMOVE DOOR SILLS AT LEVELS TO BE SERVED. DO NOT
OPEN TRUNK DOOR TO REMOVE DOOR SILL UNTIL
CONFIRMATION IS RECEIVED FROM THE PENDANT CONTROL
OPERATOR THAT THE PLATFORM IS AT THIS LEVEL. FOR
THIS OPERATION, THE PENDANT CONTROL OPERATOR CAN
STOP THE PLATFORM SUFFICIENTLY CLOSE TO THIS LEVEL
BY LOOKING INTO THE TRUNK FROM THE 01 LEVEL AND
OBSERVING THE APPROX PLATFORM POSITION.
(6) PLACE THE SYSTEM IN MANUAL BYPASS MODE BY ALIGNING
THE UP AND DOWN SOLENOID OPERATED AIR VALVES. THE
VALVES ARE LOCATED AT THE MAIN DECK STBD FWD
CORNER OF THE EQPT TRUNK EXTERIOR. AT EACH VALVE:
(A) REMOVE THE MANUAL LEVER LOCK PIN.
(B) LIFT THE LEVER DETENT KNOB THEREBY LIFTING
THE LEVER DETENT PIN OUT OF THE CAM DETENT.
(C) ROTATE THE LEVER NINETY DEGREES TO A POSITION
ALIGNED WITH THE VALVE CENTERLINE.
(D) RELEASE THE LEVER KNOB ALLOWING THE DETENT
PIN TO REST IN THE CAM DETENT.
(E) INSERT THE MANUAL LEVER LOCK PIN.
(7) INSTALL PENDANT CONTROL AT THE 01 LEVEL.
(8) OPERATE THE EQPT THROUGH AT LEAST ONE COMPLETE
CYCLE WITHOUT A LOAD IAW THE FOLLOWING OPERATING
PROCEDURES.
NOTE: IF THE PLATFORM IS LOADED AT THE TIME OF ELECTRIC
POWER LOSS OR ELECTRIC CONTROL SYSTEM FAILURE, LOWER THE PLATFORM
TO THE SECOND PLATFORM LEVEL BY SLIPPING THE HOIST BRAKE WITH THE
HOIST BRAKE RELEASE LANYARD. THE LOAD SHOULD BE REMOVED AT THE
SECOND PLATFORM LEVEL LEAVING THE PLATFORM EMPTY.
6. OPERATING PROCEDURES.
A. THIS PROCEDURE DESCRIBES HOW TO OPERATE THE EQPT IN A
CASUALTY MODE IN THE EVENT OF ELECTRIC POWER LOSS OR ELECTRIC
CONTROL SYSTEM FAILURE IF THE STRIKEDOWN/UP OPERATION MUST
CONTINUE. IN THE CASUALTY MODE THE EQPT IS OPERATED WITHOUT
INTERLOCKS USING PENDANT CONTROL AND VISUAL OBSERVATION ONLY.
B. THE EQPT PLATFORM CAN BE MOVED IN THE UP OR DOWN
DIRECTION BY PRESSING THE APPROPRIATE UP OR DOWN LEVER ON THE
PENDANT CONTROL.
C. RAISING THE PLATFORM TO THE 01 LEVEL REQUIRES THE
PENDANT CONTROL OPERATOR TO PRESS THE UP LEVER AND OBSERVE THE
PLATFORM UNTIL IT APPROACHES THE 01 LEVEL AND THEN GRADUALLY
RELEASE THE UP LEVER UNTIL THE PLATFORM IS ALIGNED WITH THE
PALLET TRUCK RAMP.
D. LOWERING THE PLATFORM REQUIRES THE PENDANT CONTROL
OPERATOR TO PRESS THE DOWN LEVER AND COMMUNICATE TO PERSONNEL AT
THE LOWER LEVEL TO BE SERVED THAT THE PLATFORM IS IN MOTION. THE
PENDANT CONTROL OPERATOR WILL THEN GRADUALLY RELEASE THE DOWN
LEVER AND BRING THE PLATFORM TO A STOP WHEN THE OBSERVER SAYS
STOP.
E. RAISING THE PLATFORM WHEN OPERATING BTWN THE SECOND
PLATFORM LEVEL AND MAIN DECK LEVEL REQUIRES THE PENDANT CONTROL
OPERATOR TO PRESS THE UP LEVER AND COMMUNICATE TO THE PERSONNEL
AT THE LOWER DECKS THAT THE PLATFORM IS IN MOTION. THE PENDANT
CONTROL OPERATOR WILL THEN GRADUALLY RELEASE THE UP LEVER AND
BRING THE PLATFORM TO A STOP WHEN THE OBSERVER SAYS STOP.
7. SECURING PROCEDURES.
A. IF THE MAIN DECK LEVEL DOOR SILL WAS PREVIOUSLY REMOVED,
MOVE THE PLATFORM TO THE MAIN DECK LEVEL. IF NOT, GO TO STEP
7.B.
(1) MOVING THE PLATFORM REQUIRES THE PENDANT CONTROL
OPERATOR TO PRESS THE UP OR DOWN LEVER AS APPROPRIATE AND
COMMUNICATE TO PERSONNEL AT THE LOWER LEVEL TO BE SERVED THAT THE
PLATFORM IS IN MOTION. THE PENDANT CONTROL OPERATOR WILL THEN
GRADUALLY RELEASE THE DEPRESSED LEVER AND BRING THE PLATFORM TO A
STOP WHEN THE OPERATOR SAYS STOP.
(2) WHEN THE PLATFORM RESTS AT THE MAIN DECK LEVEL,
OPEN THE TRUNK DOOR, INSTALL THE DOOR SILL AND SECURE THE TRUNK
DOOR.
B. MOVE THE PLATFORM TO THE SECOND PLATFORM LEVEL.
(1) MOVING THE PLATFORM REQUIRES THE PENDANT CONTROL
OPERATOR TO PRESS THE DOWN LEVER AND COMMUNICATE TO THE PERSONNEL
AT THE LOWER DECKS THAT THE PLATFORM IS IN MOTION. THE PENDANT
CONTROL OPERATOR WILL THEN GRADUALLY RELEASE THE DEPRESSED LEVER
AND BRING THE PLATFORM TO A STOP WHEN THE OBSERVER SAYS STOP.
(2) WHEN THE PLATFORM RESTS AT THE SECOND PLATFORM
LEVEL, OPEN THE TRUNK DOOR, INSTALL THE DOOR SILL AND SECURE THE
TRUNK DOOR.
C. LOWER THE PLATFORM FROM THE SECOND PLATFORM LEVEL UNTIL
IT RESTS ON THE BUFFER SPRINGS. THIS POSITION CAN BE DETERMINED
BY THE PENDANT CONTROL OPERATOR LOOKING INTO THE TRUNK FROM THE
01 LEVEL AND DETERMINING THAT THE PLATFORM HAS STOPPED MOVING.
D. TAKE UP SLACK IN THE HOIST CHAIN.
E. SECURE THE LP AIR SUPPLY AND BLEED OFF THE REMAINING AIR
PRESSURE. THE SYSTEM AIR PRESSURE GAGE ON THE MAIN DECK LEVEL
SHOULD READ ZERO PSI.
F. REMOVE THE PENDANT CONTROL.
G. CLOSE THE HATCH AND REMOVE THE STANCHIONS AND LIFE
LINES.
H. RESTORE UP AND DOWN SOLENOID OPERATED VALVES TO
AUTOMATIC SETTING. DO THE REVERSE OF STEP 5.B(6).
WARNING: STEP 7.H MUST BE ACCOMPLISHED AT CONCLUSION OF
OPERATION TO ENSURE THAT WHEN ELECTRIC POWER IS RESTORED OR THE
CONTROL SYSTEM CASUALTY IS REMEDIED THE SYSTEM INTERLOCKS WILL
NOT BE BYPASSED.
I. TAG THE EQPT OUT OF SERVICE.
8. FOR COMNAVSURFLANT/COMNAVSURFPAC - RECOMMEND DDG 51 CLASS
SHIPS BE TASKED TO ADHERE TO PARA 3 THROUGH 7 GUIDANCE.
9. FOR SUPERVISORS - REQUEST ENSURE PARA 3 THROUGH 7 GUIDANCE IS
PROVIDED TO CONTRACTORS FOR USE ON HULLS PRIOR TO DELIVERY.
10. FOR SUPSHIP BATH CODE 241.3 - ENSURE INCORPORATION OF INTENT
OF PARA 3 THROUGH 7 GUIDANCE IN NEXT UPDATE OF REFS A AND B.
11. THIS CLASS ADVISORY DOES NOT AFFECT CSOSS, EOSS, PMS OR
CMMP. IT WILL BE CANCELLED WHEN REFS A AND B HAVE BEEN UPDATED
AND DISTRIBUTED.
12. ORIG POC IS MR. N. SMITHSON, PMS400F511, DSN 332-5981 OR
COMM (703) 602-5981 EXT 133. TPOC IS MR. F. WEIDNER, SEA 03W46,
DSN 332-9391 OR COMM (703) 602-9391 EXT 406.
13. MINIMIZE CONSIDERED, R. MC KEE, PMS 400F1.//