OCS
Platform
CWIS
Information
Company:
Marathon
Oil
Company
Prospect
or
Field
Name:
South
Pass
OCS
Lease
and
Block:
G­
7799,
Block
87
Platform
Name:
Platform
"
D"

CWIS
Information
Requirements
Platform
Information
Number
of
CWISs
1
Brief
description
of
each
CWIS
(
e.
g.,
sea
chest,
simple
pipe)
Simple
pipe
Rough
dimensions
of
each
CWIS
and
indicate
whether
CWIS
has
existing
flange
20"
inner
diameter
with
bottom
at
51'
below
water
level
Screen
type
(
e.
g.,
strainer,
wedge
wire)
with
mesh
size
10'­
6"
slotted
pipe
section
with
bottom
open
slots
are
2"
W
x
12"
L
6
slots/
row
(
spaced
60
°
apart)
6"
vertical
separation
(
end­
to­
end)
between
rows
Total
daily
maximum
design
water
intake
volume
of
each
CWIS
600
gpm
(
design
specifications)

Total
daily
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
~
600
gpm
(
estimated)

Total
daily
cooling
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
~
600
gpm
(
estimated)

Design
through
screen
velocity
of
each
CWIS
(
i.
e.,
Q
=
V
*
A)
(
set­
up/
drilling)
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
Cooling
produced
gas
after
each
stage
of
compression
and
cooling
compressor
engine's
heat
transfer
fluids
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
See
above
List
purposes
of
non­
cooling
water
intakes
(
e.
g.,
fire
water,
hotel
loads)
other
than
ballast
water.
Fire
water
Total
volume
of
water
intake
for
ballasting,
duration
of
ballast
intake,
and
through
screen
velocity
of
ballast
intake.
N/
A
Mitigation
measures
for
reducing
impingement
and
entrainment
of
aquatic
organisms,
and
biofouling
prevention
measures.
Strainers
on
pump
intakes
Mitigation
measures
for
reducing
exotic
species
migration
through
ballast
water.
N/
A
CWIS
=
Cooling
Water
Intake
Structure
OCS
Platform
CWIS
Information
Company:
Marathon
Oil
Company
Prospect
or
Field
Name:
South
Pass
OCS
Lease
and
Block:
G­
5687,
Block
86
Platform
Name:
Platform
"
C"

CWIS
Information
Requirements
Platform
Information
Number
of
CWISs
2
Brief
description
of
each
CWIS
(
e.
g.,
sea
chest,
simple
pipe)
Simple
pipe
Rough
dimensions
of
each
CWIS
and
indicate
whether
CWIS
has
existing
flange
20"
inner
diameter
with
bottom
at
59'
below
water
level
Screen
type
(
e.
g.,
strainer,
wedge
wire)
with
mesh
size
8'
slotted
pipe
section
with
bottom
open
slots
are
1"
W
x
4"
L
slots
spaced
3"
apart
along
circumference
and
8"
apart
vertically
Total
daily
maximum
design
water
intake
volume
of
each
CWIS
1200
gpm
(
design
specifications)

Total
daily
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
~
1200
gpm
(
estimated)
only
one
pump
is
run
at
a
time
Total
daily
cooling
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
~
1200
gpm
(
estimated)
only
one
pump
is
run
at
a
time
Design
through
screen
velocity
of
each
CWIS
(
i.
e.,
Q
=
V
*
A)
(
set­
up/
drilling)
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
Cooling
produced
gas
after
each
stage
of
compression
and
cooling
compressor
engine's
heat
transfer
fluids
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
See
above
List
purposes
of
non­
cooling
water
intakes
(
e.
g.,
fire
water,
hotel
loads)
other
than
ballast
water.
Fire
water
Total
volume
of
water
intake
for
ballasting,
duration
of
ballast
intake,
and
through
screen
velocity
of
ballast
intake.
N/
A
Mitigation
measures
for
reducing
impingement
and
entrainment
of
aquatic
organisms,
and
biofouling
prevention
measures.
Strainer
on
pump
intakes
Mitigation
measures
for
reducing
exotic
species
migration
through
ballast
water.
N/
A
CWIS
=
Cooling
Water
Intake
Structure
OCS
Platform
CWIS
Information
Company:
Marathon
Oil
Company
Prospect
or
Field
Name:
South
Pass
OCS
Lease
and
Block:
G­
1618,
Block
89
Platform
Name:
Platform
"
B"

CWIS
Information
Requirements
Platform
Information
Number
of
CWISs
1
(
out­
of­
service)

Brief
description
of
each
CWIS
(
e.
g.,
sea
chest,
simple
pipe)
Simple
pipe
Rough
dimensions
of
each
CWIS
and
indicate
whether
CWIS
has
existing
flange
12"
inner
diameter
with
bottom
at
47'
below
water
level
Screen
type
(
e.
g.,
strainer,
wedge
wire)
with
mesh
size
8'
perforated
pipe
section
with
bottom
open
perforated
with
1"
diameter
holes
spread
3"
apart
along
the
circumference
and
9"
apart
vertically
Total
daily
maximum
design
water
intake
volume
of
each
CWIS
400
gpm
(
out
of
service)

Total
daily
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
N/
A
Total
daily
cooling
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
N/
A
Design
through
screen
velocity
of
each
CWIS
(
i.
e.,
Q
=
V
*
A)
(
set­
up/
drilling)
N/
A
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
Cool
produced
gas
during
compression
(
out
of
service)

List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
See
above
List
purposes
of
non­
cooling
water
intakes
(
e.
g.,
fire
water,
hotel
loads)
other
than
ballast
water.
Fire
water
Total
volume
of
water
intake
for
ballasting,
duration
of
ballast
intake,
and
through
screen
velocity
of
ballast
intake.
N/
A
Mitigation
measures
for
reducing
impingement
and
entrainment
of
aquatic
organisms,
and
biofouling
prevention
measures.
Strainers
on
pump
intakes
Mitigation
measures
for
reducing
exotic
species
migration
through
ballast
water.
N/
A
CWIS
=
Cooling
Water
Intake
Structure
OCS
Platform
CWIS
Information
Company:
Marathon
Oil
Company
Prospect
or
Field
Name:
Ewing
Bank
OCS
Lease
and
Block:
G­
12136,
Block
873
Platform
Name:
Platform
"
A"

CWIS
Information
Requirements
Platform
Information
Number
of
CWISs
3
Brief
description
of
each
CWIS
(
e.
g.,
sea
chest,
simple
pipe)
Simple
pipe
Rough
dimensions
of
each
CWIS
and
indicate
whether
CWIS
has
existing
flange
24"
outer
diameter
with
0.500"
wall
thickness
Screen
type
(
e.
g.,
strainer,
wedge
wire)
with
mesh
size
Square
grid,
~
0.5"
perforations
at
pump
intake
Total
daily
maximum
design
water
intake
volume
of
each
CWIS
2800
gpm
(
design
specifications)

Total
daily
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
~
2000
gpm
(
estimated)
only
one
of
three
runs
at
a
time
Total
daily
cooling
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
~
2000
gpm
(
estimated)
only
one
of
three
runs
at
a
time
Design
through
screen
velocity
of
each
CWIS
(
i.
e.,
Q
=
V
*
A)
(
set­
up/
drilling)
1
ft/
sec
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
Cool
compressed
gas
and
crude
oil
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
See
above
List
purposes
of
non­
cooling
water
intakes
(
e.
g.,
fire
water,
hotel
loads)
other
than
ballast
water.
Fire
water
and
domestic
use
Total
volume
of
water
intake
for
ballasting,
duration
of
ballast
intake,
and
through
screen
velocity
of
ballast
intake.
N/
A
Mitigation
measures
for
reducing
impingement
and
entrainment
of
aquatic
organisms,
and
biofouling
prevention
measures.
Screens
on
pump
intakes
Mitigation
measures
for
reducing
exotic
species
migration
through
ballast
water.
N/
A
CWIS
=
Cooling
Water
Intake
Structure
OCS
Platform
CWIS
Information
Company:
Marathon
Oil
Company
Prospect
or
Field
Name:
Vermilion
OCS
Lease
and
Block:
G­
2278,
Block
386
Platform
Name:
Platform
"
B"

CWIS
Information
Requirements
Platform
Information
Number
of
CWISs
None
Brief
description
of
each
CWIS
(
e.
g.,
sea
chest,
simple
pipe)
Rough
dimensions
of
each
CWIS
and
indicate
whether
CWIS
has
existing
flange
Screen
type
(
e.
g.,
strainer,
wedge
wire)
with
mesh
size
Total
daily
maximum
design
water
intake
volume
of
each
CWIS
Total
daily
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
Total
daily
cooling
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
Design
through
screen
velocity
of
each
CWIS
(
i.
e.,
Q
=
V
*
A)
(
set­
up/
drilling)
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
List
purposes
of
non­
cooling
water
intakes
(
e.
g.,
fire
water,
hotel
loads)
other
than
ballast
water.
Fire
water
Total
volume
of
water
intake
for
ballasting,
duration
of
ballast
intake,
and
through
screen
velocity
of
ballast
intake.
Mitigation
measures
for
reducing
impingement
and
entrainment
of
aquatic
organisms,
and
biofouling
prevention
measures.
Mitigation
measures
for
reducing
exotic
species
migration
through
ballast
water.

CWIS
=
Cooling
Water
Intake
Structure
OCS
Platform
CWIS
Information
Company:
Marathon
Oil
Company
Prospect
or
Field
Name:
East
Cameron
OCS
Lease
and
Block:
G­
2061,
Block
321
Platform
Name:
Platform
"
A"

CWIS
Information
Requirements
Platform
Information
Number
of
CWISs
None
Brief
description
of
each
CWIS
(
e.
g.,
sea
chest,
simple
pipe)
Rough
dimensions
of
each
CWIS
and
indicate
whether
CWIS
has
existing
flange
Screen
type
(
e.
g.,
strainer,
wedge
wire)
with
mesh
size
Total
daily
maximum
design
water
intake
volume
of
each
CWIS
Total
daily
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
Total
daily
cooling
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
Design
through
screen
velocity
of
each
CWIS
(
i.
e.,
Q
=
V
*
A)
(
set­
up/
drilling)
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
List
purposes
of
non­
cooling
water
intakes
(
e.
g.,
fire
water,
hotel
loads)
other
than
ballast
water.
Fire
water
Total
volume
of
water
intake
for
ballasting,
duration
of
ballast
intake,
and
through
screen
velocity
of
ballast
intake.
Mitigation
measures
for
reducing
impingement
and
entrainment
of
aquatic
organisms,
and
biofouling
prevention
measures.
Mitigation
measures
for
reducing
exotic
species
migration
through
ballast
water.

CWIS
=
Cooling
Water
Intake
Structure
OCS
Platform
CWIS
Information
Company:
Marathon
Oil
Company
Prospect
or
Field
Name:
East
Cameron
OCS
Lease
and
Block:
G­
2061,
Block
321
Platform
Name:
Platform
"
B"

CWIS
Information
Requirements
Platform
Information
Number
of
CWISs
None
Brief
description
of
each
CWIS
(
e.
g.,
sea
chest,
simple
pipe)
Rough
dimensions
of
each
CWIS
and
indicate
whether
CWIS
has
existing
flange
Screen
type
(
e.
g.,
strainer,
wedge
wire)
with
mesh
size
Total
daily
maximum
design
water
intake
volume
of
each
CWIS
Total
daily
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
Total
daily
cooling
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
Design
through
screen
velocity
of
each
CWIS
(
i.
e.,
Q
=
V
*
A)
(
set­
up/
drilling)
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
List
purposes
of
non­
cooling
water
intakes
(
e.
g.,
fire
water,
hotel
loads)
other
than
ballast
water.
Fire
water
Total
volume
of
water
intake
for
ballasting,
duration
of
ballast
intake,
and
through
screen
velocity
of
ballast
intake.
Mitigation
measures
for
reducing
impingement
and
entrainment
of
aquatic
organisms,
and
biofouling
prevention
measures.
Mitigation
measures
for
reducing
exotic
species
migration
through
ballast
water.

CWIS
=
Cooling
Water
Intake
Structure
