539/ Tank Cleaning Operations / 992
Tan
k
Cleanin
g
O
p
erations
BOS-
P
RD-2
6
.900
6
1
3
4 D
escri
p
tion
4
.1
P
re Tas
k P
lannin
g
T
he
Chie
f
O
ff
icer/Tas
k Sup
ervisor
shall
carry out pre
-
tas
k
p
l
ann
i
ng as
fo
ll
ows:
x
R
a
i
se
the Perm
i
t
to
W
or
k (
P
TW);
x
R
ev
i
ew
the
re
l
evant
“
Mater
i
a
l S
afety
D
ata
S
heet
(
s
) (
M
SDS)”;
x
D
eve
l
op or
cons
i
der
the
T
an
k
C
l
ean
i
ng P
l
an
;
x
Chec
k
the
Tank Cleaning Checklist
;
x
D
eve
l
op
the
Emergency Response Plan
;
x
Prepare
the
Tool Box Talk
(TBT).
I
f Contractors
are present on board or
embar
k,
they
shall
be
fu
ll
y
i
nvo
l
ved
i
n
the pre
-
tas
k
p
l
ann
i
ng
.
4
.1.1 The tan
k
cleanin
g p
lan
Among
the
factors
that
shall
be
ta
k
en
i
nto
account
dur
i
ng
the
p
l
ann
i
ng
stages
of
tan
k
wash
i
ng
are
the
fo
ll
ow
i
ng:
x
T
he
construct
i
on
of
the
tan
k
wa
ll
s
;
x
T
he nature
of
the
l
ast
cargo
;
reference M
SDS;
x
T
he wash
i
ng med
i
um
,
compat
i
b
ili
ty
,
react
i
v
i
ty and
hea
l
th and
safety hazards
;
x
T
he
c
l
ean
i
ng
processes
to
be app
li
ed
;
x
T
he
appropr
i
ate
techn
iq
ues
to
be
emp
l
oyed the
t
i
me
ava
il
ab
l
e
for
c
l
ean
i
ng
and
the
nature
of
the
ne
x
t
cargo
to
be
l
oaded
;
reference Company
T
an
k
C
l
ean
i
ng Manua
l
and M
SDS;
x
T
he
remova
l
of
the
tan
k
res
i
dues
;
x
Preparat
i
on of
the wor
k
area
.
4
.
2
Wor
k
in
g
in con
f
ine
d
s
p
aces
4
.
2
.1 Isolation
T
he
conf
i
ned
space
shall
be
i
so
l
ated
;
the
l
oc
k
out/tag
out
process
shall
be
adhered
to
and
i
f
re
q
u
i
red
a
b
l
an
k
f
l
ange
shall
be
i
nsta
ll
ed
.
4
.
2
.
2
O
p
enin
g
D
ur
i
ng
the
open
i
ng
of
a
conf
i
ned
space
on
l
y
the
re
l
evant
li
ft
i
ng
e
q
u
i
pment
shall
be
used
. T
he
crew
shall
stay
out of
the
li
ne
of
f
i
re and
be
aware
of
the poss
i
b
l
e
re
l
ease of
gas when open
i
ng manho
l
es
.
4
.
2
.
3
Entr
y
B
efore
entry
i
nto
a
conf
i
ned
space
the
rescue
e
q
u
i
pment
shall
tested
and
made
ready
for
use
and
a
ll
e
l
ectr
i
ca
l
e
q
u
i
pment
w
i
r
i
ng
shall
be
carefu
ll
y
i
nspected
.
Unserv
i
ceab
l
e
e
q
u
i
pment
shall
be
rep
l
aced
or
repa
i
red
.
Entry
shall
be
made
wear
i
ng
the
appropr
i
ate
PPE
i
nc
l
ud
i
ng
a
safety
harness
w
i
th
li
fe
li
ne
.
Persona
l
gas
detectors
shall
be
carr
i
ed
and
used
by
each
person
enter
i
ng
the
space
. O
n
l
y
e
x
p
l
os
i
ve
proof
e
q
u
i
pment
and
li
ght
i
ng
shall
be used
and a
safety attendant
shall
stand by at
the
entrance
.
Vers
i
on
S
F
(BOS-
P
RD-0
3
.900
6
0
3
-
ver
.0
4
). 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
.
5 /
9
539