Document ID: EPA-HQ-OW-2004-0002-0630
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2004-11-30T05:00Z

QUESTIONS
YOUR
RESPONSE
1.
Number
of
CWISs:
There
are
technically
3
CWIS
(
J­
Tubes
that
have
been
modified
to
allow
sea
water
into
the
platform
leg).
Within
each
leg
there
are
2
intakes
for
obtaining
cooling
water.
For
purposes
of
this
questionnaire
we
are
considering
the
J­
Tube
the
CWIS
as
this
is
the
point
at
which
sea
water
is
drawn
into
the
system.

2.
Brief
description
of
each
CWIS
(
e.
g.,
sea
chest,
simple
pipe):
We
believe
the
J­
Tube
is
a
simple
open
pipe.
No
drawings
were
located
to
determine
whether
there
is
a
flange.

3.
Rough
dimensions
of
each
CWIS
and
indicate
whether
CWIS
has
existing
flange:
J­
Tube
dia
=
????
(
assume
12
inches)

4.
Screen
type
(
e.
g.,
strainer,
wedge
wire)
with
mesh
size:
Unknown
5.
Total
daily
maximum
design
water
intake
volumn
of
each
CWIS:
Leg
Room
(
LR)
2
­
2ea
Supply
Water
Pumps
rated
at
45,000
BPD
(
one
at
a
time),
LR
3
2ea
Cooling
Water
Pumps
rated
at
21600
BPD
(
one
at
a
time),
LR
4
­
2ea
Supply
Water
Pumps
rated
at
45000BPD
(
one
at
a
time).

6.
Total
daily
water
intake
volume
of
each
CWIS
(
set­
up/
drilling):
LR
2
normally
1
Supply
Water
Pump
at
45000
BPD.
LR
3
normally
1
Cooling
Water
Pump
rated
at
21600BPD.
LR
4
normally
1
Supply
Water
pump
rated
at
45000
BPD.

7.
Total
daily
cooling
water
intake
volume
of
each
CWIS
(
set­
up/
drilling):
21600
BPD
=
907200
gal/
day
8.
Design
through
screen
velocity
of
each
CWIS
(
i.
e.,
Q=
V*
A)
(
set­
up/
drilling):
Unknown
(
Unsure
of
J­
Tube
diameter)
Assuming
21600
BPD
and
12
inch
J­
Tube
V=
1.78
ft/
sec
9.
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes):
Gas
cooling,
Jacket
Water
cooling
10.
List
purposes
of
non­
cooling
water
intakes
(
e.
g.,
fire,
water,
hotel
loads)
other
than
ballast
water:
Fire
Water,
Water
Flood
11.
Total
volume
of
water
intake
for
ballasting,
duration
of
ballast
intake,
and
through
screen
velocity
of
ballast
intake:
NA
12.
Describe
mitigation
measures
used
for
reducing
impingement
and
entrainment
of
aquatic
organisms
(
e.
g.,
sea
chest
screens,
strainers):
None
13.
Describe
measures
used
to
reduce
or
prevent
biofouling:
None
14.
Describe
mitigation
measures
used
for
reducing
exotic
species
migration
through
ballast
water:
NA
OCS
Lease
and
Block:
Platform
Name:
King
Salmon
Platform
COOLING
WATER
INTAKE
STRUCTURE
(
CWIS)
INFORMATION
The
following
questions
apply
to
cooling
water
intake
structure(
s)
at
oil
and
gas
extraction
facility.
If
you
own
more
than
one
facilty,
please
copy
the
questions
and
answer
separately
for
each
facility.

Prospect
or
Field
Name:
Company:
Unocal