540/ Tank Cleaning Operations / 992
Tan
k
Cleanin
g
O
p
erations
BOS-
P
RD-2
6
.900
6
1
3
4
.
2
.
4 V
entilation
Conf
i
ned
spaces
shall
be
vent
il
ated
us
i
ng
des
i
gnated
vent
il
at
i
on
e
q
u
i
pment
;
ensur
i
ng
that
vent
il
at
i
on
reaches
the
bottom
of
the
space
.
4
.
2
.
5 A
t
m
os
ph
ere Test
T
he
atmosphere
i
n
the
conf
i
ned
space
shall
be
tested
us
i
ng
i
n
date
ca
li
brated
test
e
q
u
i
pment
. T
he
test
shall
be
carr
i
ed out
i
n
var
i
ous
areas
of
the
space
.
4
.
2
.
6
E
x
itin
g
Pr
i
or
to
e
xi
t
i
ng
the
space
a
thorough
i
nspect
i
on
of
the
who
l
e
area
shall
be
carr
i
ed
out
.
A
ll
too
l
s
,
e
q
u
i
pment
and
other mater
i
a
l
s
shall
be
removed
. T
he
safety
attendant
shall
recover
the
too
l
s
,
e
q
u
i
pment
and mater
i
a
l
s
from
outs
i
de
the
space
.
T
he
space
shall
be
re
-
secured
, i
so
l
at
i
ons
re
-i
nstated
and
the P
TW
cance
ll
ed
.
4
.
2
.
7
Tan
k
c
leanin
g
–
u
sin
g
t
h
e s
h
i
p’
s
c
rew
T
he
C
h
ie
f
O
ff
i
c
er/Tas
k
Sup
ervisor
shall
g
i
ve
the
T
oo
l
bo
x T
a
lk. I
n
add
i
t
i
on
to
the
standard
T
oo
l B
o
x T
a
lk
content
;
spec
i
f
i
c
to
tan
k
c
l
ean
i
ng
,
the
i
nherent
dangers
assoc
i
ated
w
i
th
eng
i
ne
room
access
,
wor
ki
ng
i
n
conf
i
ned
space and
the
rout
i
ng
of
hoses
shall
be
fu
ll
y
d
i
scussed
. T
he
prev
i
ous
content
of
the
tan
k,
the
Emergency
R
esponse P
l
an
and
commun
i
cat
i
ons
re
q
u
i
rement
shall
a
ll
be
h
i
gh
li
ghted
,
T
an
k
s
to
be
c
l
eaned
shall
be
i
so
l
ated
from
any
tan
k
s wh
i
ch
st
ill
conta
i
n
bu
lk liq
u
i
ds
. L
oc
k-
out/
T
ag
-
out Perm
i
t
T
o
W
or
k (S
ect
i
on
9)
shall
be used
as
appropr
i
ate
.
Mechan
i
ca
l
apparatus
i
n
any
tan
k
s
to
be
c
l
eaned
are
to
be
mechan
i
ca
ll
y/e
l
ectr
i
ca
ll
y
i
so
l
ated
us
i
ng
L
oc
k-
out/
T
ag
-
out Perm
i
t
T
o
W
or
k (S
ect
i
on
9).
W
here
access
to
tan
k
s
i
s
v
i
a
the
eng
i
ne
room
,
a
ll
non
-
v
i
ta
l
mach
i
nery
i
s to
be
sw
i
tched
off
and
i
so
l
ated
us
i
ng
L
oc
k-
out/
T
ag
-
out Perm
i
t
T
o
W
or
k (S
ect
i
on
9). S
ources
of
i
gn
i
t
i
on
are
present
i
n
the
eng
i
ne
room wh
i
ch
shall
be
ta
k
en
i
nto
cons
i
derat
i
on
.
M
SDS
sheets
perta
i
n
i
ng
to
prev
i
ous
cargo
carr
i
ed
s
i
nce
the
l
ast
c
l
ean
i
ng
operat
i
ons
shall
be made
ava
il
ab
l
e
to
the
tan
k
c
l
eaners
.
“
MA
R
P
OL 7
3/
78
A
NN
E
X II”
regu
l
ates
the
d
i
scharge
of
N
o
xi
ous
Liq
u
i
d
S
ubstances
and
the
use
of
chem
i
ca
l
s
that
are
used
for
tan
k
c
l
ean
i
ng
purposes
.
A
ll
c
l
ean
i
ng
add
i
t
i
ves
eva
l
uated
and
found
to
meet
the
re
q
u
i
rements
of
“paragraph
1
3
.
5
.2
of
Anne
x II
of
MA
R
P
OL 7
3/
78
”
are
conso
li
dated
i
nto
“anne
x 10
of
the
MEPC
.2
/C
i
rcu
l
ar
1
5
”.
S
ome
substances
ment
i
oned
on
a
vesse
l’
s
N
o
xi
ous
Liq
u
i
d
S
ubstances
cert
i
f
i
cate
re
q
u
i
re
approved
surveyors
i
n
attendance
dur
i
ng
tan
k
c
l
ean
i
ng
,
for
e
x
amp
l
e
z
i
nc
brom
i
de
. W
hen
app
li
cab
l
e
,
further
r
i
s
k
assessment
shall
be
carr
i
ed out
,
espec
i
a
ll
y
for
s
ili
ca
based
cements
.
T
he
tan
k
shall
be
c
l
eaned us
i
ng
the appropr
i
ate methods
.
4
.
2
.
8
Tan
k
c
leanin
g
–
u
sin
g
s
h
ore
c
ontra
c
tors
I
t
i
s
the
respons
i
b
ili
ty of
the
Master
to prov
i
de
the
contractors w
i
th
a
safe p
l
ace of wor
k.
T
he
Master
i
s
u
l
t
i
mate
l
y
respons
i
b
l
e
for
the
safe
comp
l
et
i
on
of
the wor
k.
W
hen
contractors
are used
i
nstead of
own
crew
, 4.2.7
as ment
i
oned
above
shall
rema
i
n app
li
cab
l
e
.
Vers
i
on
S
F
(BOS-
P
RD-0
3
.900
6
0
3
-
ver
.04). O
r
i
g
i
na
l
date
: 22
/
0
6/
2012.
Vers
i
on
date
:
3
1
/
12
/
201
5
.
Va
li
d
vers
i
on
on
l
y
on QM
S
s
i
te
.
Uncontro
ll
ed
document
when
pr
i
nted
.
Procedure prepared by
: BOS
Head
of
O
perat
i
ons
.
Approved
by
: BOS
Head
of
O
perat
i
ons
.
Va
li
dated by
: BOS
Qua
li
ty
R
epresentat
i
ve
.
6 /
9
540