P
ersonal Safet
y
BOS-
P
RD-0
3
.90090
6
A
se
c
u
re
,
w
e
ll-
made
l
adder
i
s
ne
c
essar
y
f
or
sa
f
e
l
adder
u
se
. L
adders
c
ome
i
n
d
i
ff
erent
st
y
l
es
, i
n
cl
u
d
i
ng
step
,
stra
i
g
h
t
,
and
e
x
tens
i
on
. T
h
e
y
a
l
so
var
y
i
n
c
onstr
u
c
t
i
on
and ma
y
c
ons
i
st
o
f
w
ood
,
a
l
u
m
i
n
i
u
m
,
or
f
i
bre
-
g
l
ass
.
C
h
oose
t
h
e
c
orre
c
t
t
y
pe and
s
i
z
e
l
adder
f
or
t
h
e
j
ob
.
F
o
ll
o
w
t
h
ese g
u
i
de
li
nes
f
or
sa
f
e
l
adder
u
sage
:
x
A
l
w
a
y
s
i
nspe
c
t
a
l
adder
be
f
ore
y
o
u
cli
mb
i
t
.
Ma
k
e
s
u
re
t
h
e
steps
are
st
u
rd
y
and
t
h
e
l
o
cki
ng
me
c
h
an
i
sms
are
i
n good
w
or
ki
ng order
;
x
C
arr
y
l
adders
h
or
i
z
onta
ll
y w
i
t
h
t
h
e
f
ront
end
s
li
g
h
t
l
y h
i
g
h
er
t
h
an
t
h
e
ba
ck
end
;
x
T
o
open
a
step
l
adder
,
ma
k
e
s
u
re
t
h
e
spreader
i
s
l
o
ck
ed
and
t
h
e
pa
il
s
h
e
l
f
i
s
i
n
pos
i
t
i
on
. T
o
open
an
e
x
tens
i
on
l
adder
,
bra
c
e
t
h
e
bottom
end and
p
u
s
h
t
h
e
r
u
ngs
or
ra
il
s
o
u
t
;
x
P
l
a
c
e
l
adders
on a
so
li
d
, l
eve
l
s
u
r
f
a
c
e
to ens
u
re
sa
f
et
y
;
x
W
at
c
h
f
or
over
h
ead
obstr
u
c
t
i
ons
;
x
P
os
i
t
i
on
a
stra
i
g
h
t
or
e
x
tens
i
on
l
adder
so
t
h
at
t
h
e
base
o
f
t
h
e
l
adder
i
s
one
f
oot
/3
0c
m
a
w
a
y
f
rom
t
h
e
vert
ic
a
l
s
u
pport
f
or
ever
y
f
o
u
r
f
eet
/1
.
22m
o
f w
or
ki
ng
l
adder
h
e
i
g
h
t
(
e
.
g
. i
f
y
o
u
are
w
or
ki
ng
w
i
t
h
e
i
g
h
t
f
eet
/
2
.44
m
o
f
l
adder
,
p
l
a
c
e
t
h
e base o
f
t
h
e
l
adder
t
w
o
f
eet
/
6
1
c
m
f
rom
t
h
e
w
a
ll);
x
D
o not p
l
a
c
e
t
h
e
top o
f
a
l
adder
aga
i
nst a
w
i
ndo
w
or
an
u
neven
s
u
r
f
a
c
e
;
x
W
h
en
poss
i
b
l
e
,
t
i
e
t
h
e
top
o
f
a
stra
i
g
h
t or
e
x
tens
i
on
l
adder
to
s
u
pports
. S
ta
k
e
and
t
i
e
t
h
e
f
eet
o
f
t
h
e
l
adder
;
x
A
n
e
x
tens
i
on
l
adder
u
sed
f
or
a
cc
ess
to
a
h
i
g
h
de
ck
shall
e
x
tend
at
l
east
1
meter
be
y
ond t
h
e
s
u
pport
po
i
nt
;
x
U
se a
w
ooden or
p
l
ast
ic l
adder
i
f
y
o
u
shall
w
or
k
near
e
l
e
c
tr
ic
a
l
so
u
r
c
es
;
x
D
o
not
p
l
a
c
e
a
l
adder
i
n
f
ront
o
f
a
door
u
n
l
ess
y
o
u
l
o
ck
and
barr
ic
ade
t
h
e
door
and
post
a
w
arn
i
ng
s
i
gn on t
h
e oppos
i
te
s
i
de
o
f
t
h
e
door
;
x
U
se
c
ommon
sense
wh
en
cli
mb
i
ng or
w
or
ki
ng on
l
adders
;
x
W
ear
sa
f
et
y
s
h
oes
w
i
t
h
s
li
p
-
res
i
stant
so
l
es
and ma
k
e
s
u
re
t
h
e
y
are dr
y
be
f
ore
cli
mb
i
ng
;
x
N
ever
a
ll
o
w
more
t
h
an one
person on a
l
adder
;
x
T
o
cli
mb or
des
c
end a
l
adder
,
f
a
c
e
t
h
e
l
adder
and
f
i
rm
l
y
gr
i
p
t
h
e
ra
il
s
,
not
t
h
e
r
u
ngs
,
w
i
t
h
bot
h h
ands
;
x
K
eep
y
o
u
r
bod
y
bet
w
een
t
h
e
ra
il
s
at a
ll
t
i
mes
. D
o not s
h
i
f
t
y
o
u
r
w
e
i
g
h
t
to
one
s
i
de
;
x
H
ave
somebod
y
stead
y
t
h
e
l
adder
i
f
i
t
c
annot be
se
c
u
red ot
h
er
w
i
se
;
x
D
o not
stand on
t
h
e
top
f
o
u
r
r
u
ngs
o
f
an e
x
tens
i
on
l
adder
or
t
h
e
top
t
w
o
r
u
ngs
o
f
a
step
l
adder
;
x
W
h
en
w
or
ki
ng
on a
l
adder
, k
eep
t
w
o
f
eet and one
h
and on
t
h
e
l
adder
at a
ll
t
i
mes
;
x
D
o not
stand on
t
h
e
b
u
ck
et
s
h
e
l
f
o
f
a
l
adder
;
x
W
h
en
w
or
ki
ng
on a
l
adder
, c
arr
y
sma
ll
too
l
s
on a
too
l
be
l
t
. U
se a
rope
to
ra
i
se
and
l
o
w
er
h
eav
y
too
l
s
;
x
N
ever
l
eave a
ra
i
sed
or
open
l
adder
u
nattended
. S
tore
l
adders
a
w
a
y
f
rom
h
eat and mo
i
st
u
re
;
x
D
estro
y
damaged or
u
nsa
f
e
l
adders
.
4.
6
P
o
w
er tools
P
o
w
er
too
l
s
c
an
be
e
x
treme
l
y
dangero
u
s
i
f
u
sed
i
mproper
l
y
. C
ommon
i
n
ci
dents
asso
ci
ated
w
i
t
h
po
w
er
too
l
s
i
n
cl
u
de
abras
i
ons
, c
u
ts
, l
a
c
erat
i
ons
,
amp
u
tat
i
ons
,
b
u
rns
,
e
l
e
c
tro
c
u
t
i
on
,
and
bro
k
en
bones
. T
h
ese
a
cci
dents
are o
f
ten
c
a
u
sed b
y
t
h
e
f
o
ll
o
w
i
ng
:
x
T
o
u
c
h
i
ng
t
h
e
c
u
tt
i
ng
,
dr
illi
ng
,
or
gr
i
nd
i
ng
c
omponents
;
x
G
ett
i
ng
c
a
u
g
h
t
i
n mov
i
ng parts
;
x
S
uff
er
i
ng e
l
e
c
tr
ic
a
l
s
h
o
ck
d
u
e
to
i
mproper
gro
u
nd
i
ng
,
e
q
u
i
pment de
f
e
c
ts
,
or
operator m
i
s
u
se
;
x
B
e
i
ng
str
u
ck
b
y
part
icl
es
t
h
at norma
ll
y
e
j
e
c
t d
u
r
i
ng operat
i
on
;
x
T
o
u
c
h
i
ng
h
ot
too
l
s
or
w
or
k
areas
;
x
F
a
lli
ng
i
n
t
h
e
w
or
k
area
;
x
B
e
i
ng
str
u
ck
b
y
f
a
lli
ng
too
l
s
;
x
W
h
en
w
or
ki
ng
aro
u
nd
po
w
er
too
l
s
,
y
o
u
shall
w
ear
persona
l
prote
c
t
i
ve
e
q
u
i
pment
and
avo
i
d
w
ear
i
ng
l
oose
cl
ot
h
i
ng or
j
e
w
e
ll
er
y
t
h
at
c
o
u
l
d
c
at
c
h
i
n mov
i
ng ma
c
h
i
ner
y
.
4.
6
.1 General
g
u
id
el
i
nes
x
A
l
w
a
y
s
do a
v
i
s
u
a
l i
nspe
c
t
i
on be
f
ore
u
se
(
g
u
ards
i
n
p
l
a
c
e
,
state
o
f
e
l
e
c
tr
ic c
ab
l
es
,
et
c…)
x
U
se
t
h
e
c
orre
c
t
too
l
f
or
t
h
e
j
ob
. D
o
not
u
se
a
too
l
or
atta
c
h
ment
f
or
somet
h
i
ng
i
t
w
as
not
des
i
gned
to
do
;
V
ers
i
on
0
5
. O
r
i
g
i
na
l
date
:
2
5/
0
5/
2
0
1
2
.
V
ers
i
on date
:
31/1
2
/
2
0
15
.
V
a
li
d
vers
i
on
on
l
y
on
Q
M
S
s
i
te
. U
n
c
ontro
ll
ed
wh
en
pr
i
nted
.
P
ro
c
ed
u
re prepared b
y:
BOS
Q
HS
E
C
oord
i
nator
.
A
pproved
b
y:
BOS
Q
HS
E
Manager
.
V
a
li
dated
b
y:
BOS
Qu
a
li
t
y
R
epresentat
i
ve
13 / 1
8
777




