Our month in Guam
complete, we headed north to exchange the warm waters of the tropics for the
icy waters of a Soviet harbor.
Two days out of
Guam, we had fallen right back into our at sea shipboard routine with a
mechanical ease. Though not yet having
left the tropical waters behind, I would soon find out that even in the
tropics, the water is cold at 1000 feet.
One is never more
aware of being surrounded by water than while standing watch in engine room
lower level. It’s the first watch
qualified by the newest men aboard, because the awareness it creates certainly
helps drive home the importance of being sure of your actions.
Whether standing
watch in a t-shirt and dungarees or huddled against a main sea water pump,
running in super slow, wearing a foul weather jacket and gloves, the watch
stander in engine room lower level was the first to know of changing sea water
conditions.
Hot water leak off
to the bilge, from the Condensate Pump packing glands, of a submarine surrounded
by the frigid waters of a Soviet harbor would fill the space with an eerie,
knee high fog. A fog so dense at times,
it was difficult to see ones shoes.
While the heat of
the Indian Ocean usually made it difficult to peel off a sweat soaked t-shirt
at the end of a six-hour watch.
Returning forward,
from a walk aft to check shaft lube oil temperatures, to see the sound powered
phone white call light flash, I am told to start up the evaporator.
An important part
of standing watch in engine room lower level, the evaporator makes fresh water
from seawater. Fresh water for steam
plant make up, reactor plant make up, cooking, drinking and most importantly
showers!!!
Running the
evaporator is vital to the success of the mission and to the comfort of the
crew. Though it can be a noisemaker and
secured for long stretches to avoid giving away our position, any opportunity
to keep our tanks filled needed to be taken advantage of.
Receiving the
order to start it up I set about lining up seawater and steam. A vacuum is drawn upon the shell of the
machine and as the incoming seawater is heated to boiling, seawater flowing
through a condenser cools that steam and turns it to fresh water, where it is
sampled and then sent to the various tanks needing to be filled.
The brine left
behind by the boiling off seawater is then pumped back overboard using a
high-pressure brine pump. A pump
designed to discharge at whatever pressure is necessary, depending upon the
depth of the submarine.
A fairly efficient
process, which when running at maximum capacity, could produce up to 8000
gallons of fresh water per day.
Seawater and steam
lined up, I open the overboard discharge valve of the high-pressure brine pump
and step around the corner to the evaporator control panel. The evaporator was now between the brine pump
and me.
Checking seawater
pressure and starting the pump, its familiar chugging sound is followed by a BANG!!!
Though scary enough on it’s own, the BANG is followed by a LOUD
HISSING SOUND!!!
Still around the
corner from the source, the hissing sound tells me all I need to know. WATER
IS GETTING INTO THE PEOPLE TANK!!! WE’VE GOT FLOODING!!!
Stopping the pump
and stepping around the corner, I’m met with a face high blast of incoming
seawater. Yes, it’s salty and even in
the tropics, its cold at 1000 feet!!! My
mind racing I as I reach through the spray for the overboard discharge valve,
I’m reminded of the gallows humor used to ward off the fear of just such an
event.
Don’t worry
about the flooding the fire will put it out!!!
Adrenaline pumping
and keenly, yet almost eerily, aware of everything happening around me, I
realize that attempting to start the drain pump, our most important piece of
de-watering equipment, will probably give me just that, A FIRE!!!
Seawater had
sprayed directly into the controller and windings of the drain pump and salt
water does not react kindly with energized electrical equipment. It was now imperative to stop the leak ASAP!!!
I have no way of getting the water out!!!
Blindly reaching
into the overhead to grab the hand wheel of the overboard discharge valve,
while continuing to be showered with incoming seawater, the struggle now was to
shut it against sea pressure wanting to force it in the opposite direction.
A combination of
adrenaline, youth and maybe some help from the St Elmo meddle around my neck,
the valve was closed as the chief reached the bottom of the ladder. Though happening in what seemed like a slow
motion movie sequence, the whole event occurred in less time than it took me to
write this account or for you to read it.
Assessing the
damage, a flexible coupling in the pipe between the high-pressure brine pump
and the overboard discharge valve had come apart.
Adrenaline
subsiding, the drain pump controller dried out and the seawater pumped out, our
attention now turned to how we could make the evaporator work, without the
brine pump. A little good old American
ingenuity, a couple of fire hoses and a few hours later the evaporator was
running again, quieter than ever and much simpler to use.
Makes one wonder
why it wasn’t designed like that in the first place. An ominous start to a dangerous mission, it
would be more than 45 days or more before we could drink away its stress.
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