502/ Methanol Operations / 992
Met
h
anol O
p
erations
BOS-
P
RD-2
6
.900
6
09
pump
. T
he
Ni
tro
g
en
a
i
ms
to
rep
l
ace
the
methano
l
dur
i
n
g
the
off
l
oad
i
n
g
. W
hen
d
i
schar
g
i
n
g
,
watch
the
n
i
tro
g
en
i
n
l
et
pressure
constant
l
y
,
on
the pressure
g
au
g
e
on methano
l
tan
k
vent
p
i
pe
.
P
ump
i
n
g
rate
i
s
usua
ll
y
around
1
20
m
3/
h
w
i
th
4
bars
of
pressure
i
n
the
hose
. T
he
by
-
pass
va
l
ve
on
the
d
i
schar
g
e
li
ne may be
used
to
set
the
off
l
oad
i
n
g
pressure
. T
he
de
li
very
capac
i
ty
to
be
re
g
u
l
ated
by
ad
j
ust
i
n
g
the hydrau
li
c
f
l
ow
.
T
h
e
d
is
ch
arge rate is to
b
e 80
%
o
f
t
h
e
N
2 s
upp
ly rate
S
tart
s
l
ow
rate w
i
th pressure at
2
bars
. T
hen
i
ncrease
to
80
m
3/
h w
i
th a
pressure
of
3
bars
at
sh
i
p man
i
fo
l
d
Car
g
o
tan
k
to be ma
i
nta
i
ned at
pos
i
t
i
ve pressure
throu
g
hout
the off
l
oad
i
n
g
I
n
case
of
sh
i
p
’
s
n
i
tro
g
en
p
l
ant
fa
il
ure
,
even
i
f
rece
i
ver
i
s
ab
l
e
to
supp
l
y
N2,
operat
i
on
i
s
cance
ll
ed
unt
il
the
sh
i
p has
recovered
her
N2
stat
i
on
.
Ma
k
e
sure pressure
va
l
ves
are not
stuc
k
ed
i
n open
pos
i
t
i
on
,
th
i
s wou
l
d
resu
l
t
i
n waste of
n
i
tro
g
en
.
W
hen
a methano
l
d
i
schar
g
e
pump
brea
k
s
down
,
use
the
other methano
l
d
i
schar
g
e
pump
as
an emer
g
ency
pump
.
Methano
l
tan
k’
s
o
x
y
g
en
l
eve
l
must
be
re
g
u
l
ar
l
y
chec
k
ed
dur
i
n
g
the
off
l
oad
i
n
g
,
and must
rema
i
n
under
8%. I
f
any
doubt
, i
ncrease
the
n
i
tro
g
en
pressure
i
n
the methano
l
tan
k
by
reduc
i
n
g
the
d
i
schar
g
i
n
g
rate
,
unt
il
the
pressure
va
l
ve
re
l
eases
and
chec
k
o
x
y
g
en
l
eve
l
at
P
V
va
l
ve
.
I
n
case
of
a
pressure
drop
to
l
ess
than
0
bar
wou
l
d
occur
i
n
a methano
l
tan
k, i
t
becomes
an
emer
g
ency
s
i
tuat
i
on
as
o
x
y
g
en
i
s
sub
j
ect
to
enter
and
m
ix
w
i
th
methano
l. S
top
i
mmed
i
ate
l
y
the
transfer
to
recover
pos
i
t
i
ve pressure
.
W
hen
the
off
l
oad
i
n
g
i
s
comp
l
eted
,
d
i
sconnect
the
d
i
schar
g
e
hose
,
and
c
l
ose
the
pur
g
e
va
l
ves
,
after pur
g
i
n
g
d
i
schar
g
e
li
ne w
i
th n
i
tro
g
en
.
T
he
padd
i
n
g
li
ne
va
l
ves
are
k
ept
open
,
the
re
g
u
l
ator
w
ill
ho
l
d
a
n
i
tro
g
en
over
pressure
i
n
the
tan
k. T
he
pressure w
ill
be appro
x. 0,
15
bar
.
Methanol
g
as measurements
to be
carr
i
ed out
re
g
u
l
ar
l
y
.
4
.2.
6 C
o
mp
letion o
f
o
p
eration
- C
leaning
W
hen
the
l
ast
off
l
oad
i
n
g
operat
i
on
has
been
comp
l
eted
,
the
sh
i
p
shall
be
f
l
ushed
as
per
fo
ll
ow
i
n
g
procedure
and
the
l
ast
f
l
ush
i
n
g
,
at
l
east
,
shall
be
done w
i
th
FW.
Fill
the Methano
l
tan
k
s w
i
th water
to about
5
0%,
us
i
n
g
the
l
oad
i
n
g
/
d
i
schar
g
e
li
ne
.
Di
schar
g
e
the
water
overboard
by
means
of
Methano
l
pump
.
Cont
i
nue
the
water
f
illi
n
g
/
d
i
schar
g
i
n
g
operat
i
on unt
il
the
f
l
ammab
l
e
vapour
concentrat
i
on
i
n
the Methano
l
tan
k
s
i
s
be
l
ow
3
0%
of
l
ower
f
l
ammab
l
e
li
m
i
t
(L
E
L),
before
g
as
free
i
n
g
at
dec
k l
eve
l (
throu
g
h
open
manho
l
es
) i
s
perm
i
tted
(SOL
A
S
Ch
.II-2
P
t
.D
R
e
g
.
5
9.2). T
he methano
l
tan
k
s
have
to
be
pressur
l
ess
before
the manho
l
e
to
the
tan
k i
s
opened
.
T
he
cofferdams
shall
rema
i
n
f
ill
ed w
i
th
n
i
tro
g
en unt
il
the methano
l
tan
k
s
are
g
as
-
freed
.
T
he access
trun
k
vent
/
dra
i
n
va
l
ve
shall
be
c
l
osed
before open
i
n
g
the manho
l
e
i
nto methano
l
tan
k.
Vent
il
at
i
on
of methano
l
tan
k
s
can be done
by
f
illi
n
g
of water
i
nto
the
tan
k.
B
efore
ne
x
t
f
illi
n
g
of
methano
l i
nto
the
tan
k,
d
i
schar
g
e
the
water
out
of
the
tan
k,
c
l
ean
and
dry
the
tan
k
proper
l
y
.
T
he
d
i
schar
g
e
of
the
po
ll
uted
water
overboard
shall
be
done
as
per
MA
R
P
OL
Anne
x II R
e
g
.
5
.4. T
he
d
i
schar
g
e
of Chem
i
ca
l
P
roduct
i
nto
the
sea
i
s
proh
i
b
i
ted un
l
ess
the
fo
ll
ow
i
n
g
condt
i
ons
are
sat
i
sf
i
ed
:
Vers
i
on
SF(BOS-
P
RD-0
7
.900
6
09-
ver
.04). O
r
i
g
i
na
l
date
:
22
/
0
6/
20
1
2.
Vers
i
on
date
:
31/1
2
/
20
15
.
Va
li
d
vers
i
on
on
l
y
on
Q
M
S
s
i
te
.
Uncontro
ll
ed
document
when
pr
i
nted
.
P
rocedure prepared by
:
BOS
Head
of
O
perat
i
ons
.
Approved
by
:
BOS
Head
of
O
perat
i
ons
.
Va
li
dated by
:
BOS
Q
ua
li
ty
R
epresentat
i
ve
.
1
2
/ 15
502