How To Throw Out The Trash on a Submarine.
As many of you know, I spent several years on the USS Bergall (SSN-667)
This, my friend, is part of the chores you had to do to have that many people living in a steel tube. Just like blowing the sanitary tanks.
What we have is it step by step procedure for shooting the TDU. Trash Disposal Unit. It's a small torpedo tube affair, with a ballvalve in the end. That's how they
dump the trash. Weighted it goes straight to the bottom. Now days, I believe that is kept to a minimum.
TDU FLUSHING PROCEDURE:
MAN JA PHONE AT BCP, TDU, AND PIPING SPACE.
OPERATE TDU USING FOLLOWING PHRASEOLOGY AND STEP BY STEP PROCEDURE;
A. BCP; "TDU-BCP, CRACK THE VENT AND CHECK FOR PRESSURE IN TDU. IF NO PRESSURE IN TDU, OPEN INNER DOOR AND
B. TDU; "BCP-TDU, INNER DOOR IS OPEN; LOADING THE TDU."
C. TDU; "BCP-TDU, TDU IS LOADED AND RIGGED FOR DIVE."
D. BCP; "TDU-BCP,SHIFT THE INTERLOCK TO UNLOCK OUTER DOOR POSITION, OPEN TD 44 STANDBY TO EQUALIZE."
E. TDU; "BCP-TDU, INTERLOCK SHIFTED, TD 44 OPEN. STANDING BY TO EQUALIZE"
F. BCP; "TDU-BCP,EQUALIZING THE TDU, " BCP OPERATOR OPEN TRIM SEA VALVE IN TO SEA POSITION CHECK WITH DIVING
OFFICER ON NECESSITY OF FLOODING FROM SEA BEFORE FLUSHING TDU.
G. TDU; "BCP-TDU, TDU IS EQUALIZED, VENT IS SHUT. "(TDU is equalized when water rises in the vent funnel)
H. BCP; "TDU-BCP, OPEN THE OUTER DOOR AND GIVE MARK WHEN OPEN."
I. TDU; "BCP-TDU, OUTER DOOR INDICATES OPEN." "IF OUTER DOOR IS NOT OPEN PIPE SPACE REPORT TO BCP."
J. BCP; "TDU-BCP, FLUSHING THE TDU." BCP OPERATOR WILL TAKE SUCTION FROM TRIM TANK ORDERED BY DIVING OFFICER AND
FLUSH 10,000 LBS THRU TDU.
K. BCP; OPERATOR DECREASE TRIM PUMP RPM TO 2000 RPM. "TDU-BCP, SHUT OUTER DOOR AND GIVE MARK ON SHUT INDICATION."
SECURE TRIM PUMP ON MARK.
L. TDU; "BCP-TDU, OUTER DOOR INDICATES SHUT. PIPE SPACE VERIFY AND REPORT."
M. PIPE SPACE; "BCP-PIPE SPACE, OUTER DOOR INDICATES SHUT."
N. BCP; "TDU-BCP, SHUT TD-44; SHIFT INTERLOCKS."
O. TDU; "BCP-TDU, INTERLOCK IS SHIFTED, TD-44 IS SHUT."
P. BCP; "PIPE SPACE-BCP, OPEN TD-320 START AUXILIARY DRAIN PUMP, PUMP DOWN TDU."
Q. PIPE SPACE; "BCP-TDU PIPE SPACE, TD-320 IS OPEN, DRAIN PUMP RUNNING, GOOD/NO SUCTION."
R. PIPE SPACE; "BCP-PIPE SPACE, LOST SUCTION ON TDU, TD-320 IS SHUT. AUXILIARY DRAIN PUMP IS SECURED."
S. BCP; "TDU-BCP, OPEN INNER DOOR, CHECK TDU CLEAR."
T. "BCP-TDU, TDU IS CLEAR AND DRY." IF MORE THAN ONE LOAD IS TO BE SHOT COMMENCE SEQUENCE AT (B) AGAIN.
U. BCP; "TDU-BCP, SHUT INNER DOOR. RIG TDU FOR DIVE." TDU OPERATOR SHUT HYDRAULIC SUPPLY TO MUZZLE DOOR OPERATOR,
SHUTS AND TORQUES INNER DOOR.
V. TDU; "BCP-TDU RIGGED FOR DIVE."
W. BCP; "TDU-PIPE SPACE-BCP, SECURE THE PHONES."
All of that to get the trash out of this little hatch.