Table of Contents Table of Contents
Previous Page  516/ Mooring Operations / 992 Next Page
Information
Show Menu
Previous Page 516/ Mooring Operations / 992 Next Page
Page Background

Moorin

g

O

p

erations

BOS-

P

RD-2

6

.900

6

0

7

O

n

vesse

l

s

f

i

tted w

i

th

hydrau

li

c

bra

k

es

,

the

tor

q

ue

-

sett

i

n

g

i

nd

i

cator

must

be mar

k

ed w

i

th

the

sett

i

n

g

re

q

u

i

red

for

opt

i

mum

bra

k

e

app

li

cat

i

on

. T

h

i

s

f

i

g

ure

to

be

obta

i

nab

l

e

from

the manufacturer

’

s

operat

i

on manua

l. T

he

use of

th

i

s

ki

nd of

e

q

u

i

pment does

not

re

li

eve

the

OOW

of

the duty

to

re

g

u

l

ar

l

y

chec

k

the moor

i

n

g

li

nes

.

W

hen

a

synthet

i

c moor

i

n

g

rope

i

s

turned

up

on

a

set

of

b

i

tts

,

two

round

turns

must

be made

around

the

l

ead

i

n

g

post

(

the

post

nearest

the

d

i

rect

i

on

of

stra

i

n

)

of

a

l

ar

g

e

set

of

b

i

tts

or

around

both

posts

for

sma

ll

er

c

i

rcumference posts

before

start

i

n

g

to

“

f

i

g

ure

of

e

i

g

ht

”

the

rope

.

W

hen

a

w

i

re

rope

i

s

turned

up

on

a

set

of

b

i

tts

,

three

round

turns

must

be made

around

the

b

i

tts

before

app

l

y

i

n

g

four

“

f

i

g

ure of

e

i

g

ht

”

turns

. T

he

top

l

ayers

must

be

l

ashed

to

prevent

them

from

j

ump

i

n

g

off

.

W

hen

fasten

i

n

g

a

bra

k

e

to ma

k

e

a

li

ne

fast

i

t

i

s

often

d

i

ff

i

cu

l

t

to manua

ll

y

t

i

g

hten

bra

k

es

to

the

i

r ma

xi

mum

e

x

tent when

a moor

i

n

g

li

ne

has

li

tt

l

e

l

oad

on

i

t

.

Wi

nch

bra

k

es

must

be

chec

k

ed

on

a

re

g

u

l

ar

bas

i

s

as

var

i

ous

factors

can

affect

the

tens

i

on

of

the

bra

k

es

such as

:

x

Di

fferences

i

n

stren

g

th of

personne

l

resu

l

t

i

n

g

i

n d

i

fferent

forces

app

li

ed

to

the w

i

nch bra

k

e

l

ever

;

x

Chan

g

es

i

n

l

oad

on

the moor

i

n

g

li

ne

,

due

to

chan

g

es

i

n he

i

g

ht of

t

i

de or

free board

;

x

S

ur

g

i

n

g

on

the

li

nes

due

to

traff

i

c movements

i

n

the

v

i

c

i

n

i

ty or

car

g

o movements

onboard

.

T

hese

chan

g

es

i

n

l

oad on

the moor

i

n

g

li

ne may

cause

a

red

i

str

i

but

i

on of

stresses

i

n

the

bra

k

e band a

ll

ow

i

n

g

the bra

k

e

to

be

further

t

i

g

htened

.

I

n order

to

conform

to

l

oca

l

re

g

u

l

at

i

ons

,

rat

-

g

uards

must

a

l

ways

be p

l

aced on

a

ll

moor

i

n

g

li

nes

.

OOW

must,

as

part of

h

i

s

/

her

dut

i

es

i

n

port

,

ensure

that

the

rat

-

g

uards

rema

i

n

i

n

p

l

ace

.

T

he dec

k

areas

at moor

i

n

g

stat

i

ons

must

have ant

i-

s

li

p

surfaces

prov

i

ded by

f

ixi

n

g

treads

or

by pa

i

nt

i

n

g

w

i

th

ant

i-

s

li

p

pa

i

nt

.

A

ll

moor

i

n

g

e

q

u

i

pment

such

as

bo

ll

ards

,

fa

i

r

l

ead

ro

ll

ers

,

etc.

,

must

be

mar

k

ed

w

i

th

the

respect

i

ve

S

afe

W

or

ki

n

g

L

oad

(SWL)

by way of we

l

d bead

or

e

q

u

i

va

l

ent

4

.2.

7

.

1

S

nap

bac

k

z

one

I

n

case of

rope

brea

k

a

g

e

,

the area

trave

ll

ed by

the

parted

rope

,

wh

i

ch

has

enou

g

h

stren

g

th

to

kill

a

person

,

i

s

k

nown

as

the

S

nap

B

ac

k Z

one

(SBZ).

T

he

SBZ

area

d

i

ffers

depend

i

n

g

i

f

the

tens

i

on

on the

rope

i

s

i

n

a

stra

i

g

ht

d

i

rect

i

on

or

whether

the

rope

i

s

turned

around bo

ll

ard

or

ro

ll

er

,

as

descr

i

bed

be

l

ow

:

V

ers

i

on

S

F

(BOS-

P

RD-0

7

.900

6

0

7

-

ver

.0

4

). O

r

i

g

i

na

l

date

:

22

/

0

6/

20

1

2.

V

ers

i

on

date

:

3

1

/

1

2

/

20

1

5

.

V

a

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

:

Head

of

O

perat

i

ons

.

V

a

li

dated

by

:

BOS

Q

ua

li

ty

R

epresentat

i

ve

.

1

0

/

2

7

516