1946-09-24 RADIOLOGICAL CLEARANCE OF NON TARGET VESSELS AND PROCEDURES FOR DECONTAMINATION; Ships bound for Pacific bases after Atomic Bomb tests

Navy Reports that document the dumping of nuclear waste directly into San Francisco Bay as well as other Navy Bases, the orders, correspondence, etc.

Citation: DTIC AD0473908: OPERATION CROSSROADS. RADIOLOGICAL DECONTAMINATION OF TARGET AND NON-TARGET VESSELS. VOLUME 3 pp. 16-19

NOTE: THIS DIRECTIVE PARTIALLY SUPERSEDED CJTF1 SERIAL
079 OF 9 SEPTEMBER 1946. (SEE APPENDIX II)

BUSHIPS Code 180 NAVY DEPARTMENT
All/Crossroads/FS/L9 BUREAU OF SHIPS BUMED
All/Crossroads (P2) and A4-1/FS and
Serial 1381 BUREAU OF MEDICINE AND SURGERY
WASHINGTON 25, D. C.

CONFIDENTIAL
AIRMAIL SPEEDLETTER
24 SEPTEMBER 1946

TO: CINCPAC
COMWESSEAFRON
COMSERVPAC
COMTWELVE
COM19THFLT

SUBJECT IS RADIOLOGICAL CLEARANCE OF NON TARGET VESSELS AND PROCEDURES FOR DECONTAMINATION X BUSHIPS HAS BEEN ASSIGNED COGNIZANCE OF DECONTAMINATION PROCEDURES PLUS SAFE OPERATING AND MAINTENANCE METHODS IN CASES OF ALL VESSELS EXPOSED TO RADIOACTIVITY X BUMED ASSIGNED RESPONSIBIUTY FOR DETERMINING SAFE RADIOLOGICAL LIMITS X THESE BUREAUS WILL ACT JOINTLY IN GIVING FINAL RADIOLOGICAL CLEARANCE TO VESSELS AFTER REVIEWING REMAINING IN ACTIVE SERVICE X REFERENCE COMJOINT TASK FORCE ONE SERIAL ZERO SEVEN NINE OF NINE SEPTEMBER X WHERE INFORMATION AND INSTRUCTIONS THIS SPEEDLETTER CONFLICT WITH REFERENCE THIS SPEEDLETTER WILL APPLY X

ABLE X EVAPORATORS X OPEN SUMP OR OTHER CLEAN OUT DOORS AND REMOVE ALL LOOSE SCALE UNDER WET CONDITIONS X COLLECT ALL SCALE CAREFULLY IN CLOSED CONTAINERS AND SEGREGATE UNTIL DISPOSAL AT SEA IS PRACTICABLE X SUBSEQUENTLY CARRY OUT ONE ACID CLEANING PROCESS X USE TWO PARTS EIGHTEEN DEGREE BAUME COMMERCIAL MURIATIC ACID WITH FIFTEEN PARTS FRESH WATER X FILL EVAPORATORS WITH THIS SOLUTION TO TOP OF TUBE NESTS X CIRCULATE MIXTURE THROUGH SHELLS AND EVAPORATOR FEED HEATERS

SECRET
Page 16
[Page 17]

FOR TWO HOURS BEGINNING WITH TIME SOLUTION IS STARTED INTO SHELLS X REMOVE SOLUTION AND FLUSH THOROUGHLY OBSERVE USUAL PRECAUTIONS HANDLING ACIDS X DO NOT REPEAT NOT HEAT SOLUTION X THE ABOVE PROCEDURE APPLIES TO ALL TYPES OF EVAPORATORS EXCEPT BADGER TYPES HAVE DOUBLE ABLE AND TRIPLE ABLE TYPES HEAT EXCHANGERS X FOR THESE UNITS BOIL OUT FOR NINE SIX HOURS AT TEMPERATURE OF TWO HUNDRED FAHRENHEIT USING ONE POUND BOILER COMPOUND TO TEN GALLONS FRESH WATER X USED ACID MIXTURE TO BE COLLECTED AND DISPOSED OF AT SEA X NO REPEAT NO ADDITIONAL ACID CLEANINGS ARE NECESSARY AND EVAPORATORS SUBSEQUENTLY ARE TO BE OPERATED AND MAINTAINED IN ROUTINE MANNER X

BAKER X LUBRICATING OIL COOLERS AND OTHER HEAT TRANSFER APPARATUS (EXCEPT CONDENSERS) USING SALT WATER FOR COOLING X IF MONITORS HAVE SHOWN EXISTENCE OF ANY MEASURABLE RADIATION USE ONE ACID TREATMENT FOR SALT WATER SIDE AS IN ABLE ABOVE EXCEPT USE ACID IN ONE HALF OF THE PROPORTION SPECIFIED X SUBSEQUENT OPERATION AND MAINTENANCE WILL BE REQUIRED X VESSELS OF TASK UNIT 1.2.7 (SALVAGE UNIT) GENERALLY HAD CONTAMINATED COOLERS BECAUSE OF THEIR EXTENSIVE EMPLOYMENT IN RADIOACTIVE WATERS X CHARLIE X DESIRE ABLE AND BAKER CARRIED OUT AS SOON AS PRACTICABLE: PREFERABLY BY SHIPS FORCE X BUT NOT REPEAT NOT TO INTERFERE WITH SCHEDULED OPERATIONS X

DOG X DOCKING X ALL VESSELS CAN BE DOCKED WHEN DESIRED X FOLLOWING PROCEDURE APPLIES FIRST DOCKING ONLY AFTER LEAVING BIKINI LAGOON X MARINE GROWTHS TO BE REMOVED BY SCRAPERS AS DOCK IS PUMPED DOWN X PUMPING RATE TO BE ADJUSTED SO THAT MARINE GROWTH IS KEPT WET X COLLECT ALL MARINE GROWTH PRACTICABLE FROM DOCK, KEEP IT WET AT ALL TIMES AND DUMP AT SEA BEYOND ONE HUNDRED FATHOM LINE OR AT I EAST TEN MILES AT SEA X

EASY X SANDBLASTING AND PAINTING UNDERWATER BODY X CARRY OUT REGULAR WET SANDBLASTING PROCEDURE INSURING WET CONDITIONS X KEEP DOCK FLOOR WET DURING OPERATION X COLLECT ALL OF SAND PRACTICABLE MAINTAINING

SECRET

Page 17
[Page 18]

WET CONDITION UNTIL DUMPED AT SEA AS IN DOG ABOVE X

FOX X DESIRE DOG AND EASY ABOVE CARRIED OUT AT FIRST SCHEDULED DOCKING OF VESSELS INVOLVED X

GEORGE X MONITORS ARE DESIRABLE BUT NOT REPEAT NOT ESSENTIAL FOR ABOVE OPERATIONS IF CARRIED OUT AS DIRECTED HEREIN X MONITORS SHOULD BE REQUESTED FROM RADIOLOGICAL SAFETY OFFICER TWELFTH NAVAL DISTRICT AND WILL BE FURNISHED IF PRACTICABLE X

HOW X SALT WATER LINES X TESTS HAVE DEMONSTRATED THAT ALL ROUTINE REPAIRS INVOLVING CUTTING AND WELDING CAN BE PERFORMED BY SHIPS AND YARDS WITH NO REPEAT NO DANGERS BEING INVOLVED X HOWEVER IN ALL CASES WHERE A SECTION OF LINE IS RENEWED THE OLD SECTION SHALL BE RETAINED, SEGREGATED AND DUMPED AT SEA X ANY FOULING REMOVED FROM SALT WATER LINES SHOULD BE HANDLED AND DISPOSED OF AS IN ABLE ABOVE X

ITEM X MAIN AND AUXILIARY CONDENSERS X RENEW ALL ZINCS, SEGREGATE AND DISPOSE OF AT SEA X TO BE DONE AS SOON AS PRACTICABLE BY SHIPS FORCE X

JIG X SHIPS BOATS X ANY BOATS NOT REPEAT NOT ALREADY DISPOSED OF WILL BE RETAINED AND TREATED AS FOLLOWS X SCRUB ENTIRE HULL THOROUGHLY WITH STRONG MIXTURE OF LYE AND BOILER COMPOUND X USE LONG HANDLED SCRUBBERS AND REMOVE AS MUCH OF PAINT AS PRACTICABLE IN THIS OPERATION X SUBSEQUENTLY REPAINT WITH FOUR COATS OF PAINT X RUDDERS AND SCREWS ALSO SHOULD BE SCRUBBED WITH ABOVE MIXTURE X IF MONITORS HAVE REPORTED ANY ACTIVITY IN ENGINES OR COOLERS CIRCULATE ACID MIXTURE AS IN BAKER ABOVE X EXHAUST PIPE TAILS SIMILARLY REPORTED ACTIVE SHOULD BE RENEWED AND DUMPED AT SEA X FENDERS AND CANVAS REPORTED ACTIVE SHOULD BE RENEWED AND SUNK AT SEA X TO BE DONE AS SOON AS PRACTICABLE BY SHIPS FORCE X

KING X STRUCTURAL REPAIRS ON THESE VESSELS ARE NOT INVOLVED AND CAN BE PERFORMED WITH NO RESTRICTIONS X

SECRET

Page 18
[Page 19]

LOVE X BUSHIPS WILL ISSUE ANY FURTHER INSTRUCTIONS OR MODIFICATIONS REQUIRED X MAKE REPORTS ON ITEMS ABOVE WHEN ACCOMPLISHED TO BUSHIPS AND BUMED AND TO RADIOLOGICAL SAFETY OFFICER COMTWELVE X NOTE THAT IN EACH CASE ABLE THROUGH JIG THE SPECIFIED OPERATION IS REQUIRED TO BE PERFORMED ONLY ONCE X SUBSEQUENTLY CONDITIONS WILL BE THE NORMAL ONES WHICH WILL REQUIRE NO REPEAT NO FURTHER PRECAUTIONS AND SPECIAL CONSIDERATIONS X

MIKE X TESTS AND DEVELOPMENT WORK HAVE DEMONSTRATED THAT ALL OF THE ABOVE SPECIFIED PROCEDURES CAN BE CARRIED OUT SAFELY AND WITHOUT EXPOSING PERSONNEL TO ANY HAZARDS X HOWEVER IN ORDER TO INSURE ABSOLUTE SAFETY PERSONNEL SHOULD BE SUPERVISED AND PRECAUTIONS DESCRIBED IN REFERENCE LETTER OBSERVED X THE RADIOACTIVITY PRESENT IS OF VERY LOW INTENSITY X SOME OF THE PROCEDURES SPECIFIED ARE FOR SECURITY REASONS ONLY X

NAN X VESSELS BEING DEACTIVATED AND THOSE SCHEDULED FOR DISPOSAL WILL REQUIRE SOMEWHAT DIFFERENT INSTRUCTIONS X THESE WILL BE PROMULGATED AT AN EARLY DATE BY BUREAU OF SHIPS X

OBOE X ADDRESSEES PASS TO TYPE COMMANDERS AND VESSELS INVOLVED X

PETER X REQUEST RADIOLOGICAL SAFETY OFFICERS IN HAVEN AND SAN FRANCISCO FURNISH BUSHIPS CODE 180 AND BUMED COPIES OF ALL MONITOR REPORTS TO DATE AND FUTURE MONITOORINGS X

ROSS T MCINTIER
CHIEF OF THE BUREAU OF MEDICINE AND SURGERY

E L COCHRANE
CHIEF OF THE BUREAU OF SHIPS

CC: CNO
CJTF1
NAVSHIPYDS, PUGET SOUND
NAVSHIPYDS, MARE ISLAND
NAVSHIPYDS, SANFRAN
NAVAL SHIP REPAIR BASE, GUAM
NAVSHIPYDS, TERM ISLAND
NAVSHIPYDS, PEARL
RADSAFE IN HAVEN
RADSAFE COMTWELVE
NAVAL SHIP REPAIR BASE, SAN DIEGO

SECRET

Page 19

OPERATION CROSSROADS. RADIOLOGICAL DECONTAMINATION OF TARGET AND NON- TARGET VESSELS. VOLUME 3. 1946 UNCLASSIFIED DNA ltr, 21 Apr 1982 DIRECTOR OF SHIP MATERIAL TECHNICAL INSPECTION REPORT

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