QUESTIONS
YOUR
RESPONSE
1.
Number
of
CWISs:
2
in
leg
1,
1
in
leg
3
(
J­
tubes)

2.
Brief
description
of
each
CWIS
(
e.
g.,
sea
chest,
simple
pipe):
Simple
pipe
3.
Rough
dimensions
of
each
CWIS
and
indicate
whether
CWIS
has
existing
flange:
12
inch
4.
Screen
type
(
e.
g.,
strainer,
wedge
wire)
with
mesh
size:
None
at
J­
tube,
wire
at
pump
5.
Total
daily
maximum
design
water
intake
volumn
of
each
CWIS:
2
at
3000
gal/
min,
1
at
2000
gpm
typically
run
2
big
at
a
time
(
6000
gpm)

6.
Total
daily
water
intake
volume
of
each
CWIS
(
set­
up/
drilling):
5000
gpm
(
typically
run
the
two
3000
gpm
at
2500
gpm)

7.
Total
daily
cooling
water
intake
volume
of
each
CWIS
(
set­
up/
drilling):
5000
gpm
(
all
used
for
cooling
then
to
waterflood)

8.
Design
through
screen
velocity
of
each
CWIS
(
i.
e.,
Q=
V*
A)
(
set­
up/
drilling):
7.1
ft/
sec
(
based
on
2500
gpm
through
12
inch
tube)

9.
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes):
Gas
compressor
heat
exchangers
(
fuel
burning
equipment)

10.
List
purposes
of
non­
cooling
water
intakes
(
e.
g.,
fire,
water,
hotel
loads)
other
than
ballast
water:
Waterflood,
firewater
if
needed
11.
Total
volume
of
water
intake
for
ballasting,
duration
of
ballast
intake,
and
through
screen
velocity
of
ballast
intake:
None
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:
Grayling
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
