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Page Background

A

nc

h

or

H

andlin

g

and To

w

in

g

O

p

erations

P

rocedure

BOS-

P

RD-2

6

.900

6

14

C. Towing out/ deploying the anchor

T

he off

i

cer

i

n

charge

starts

to

run

out

the

anchor

accord

i

ng

to

i

nstruct

i

ons

from

the

r

i

g

.

S

peed and

tens

i

on w

ill

be adv

i

sed by

the

r

i

g

.

I

t

i

s

adv

i

sab

l

e

not

to

use

the w

i

nch

bra

k

e

unt

il

suff

i

c

i

ent

l

ength

of

r

i

g

cha

i

n

i

s

i

n

the water

. I

n

case

of

any

fa

il

ure

at

the

r

i

g w

i

nch

,

the

tens

i

on w

ill

be

abnorma

l

h

i

gh

and may

resu

l

t

i

n

damage

to

the

sh

i

p w

i

nch

,

w

i

re

etc

.

W

hen

the

sh

i

p

i

s

at

the

i

ntended

drop

l

ocat

i

on the

r

i

g

w

ill i

nstruct

the

sh

i

p

to

start

l

ower

the

anchor

system

.

O

nce

the

system

has

been

suff

i

c

i

ent

l

y

stretched

,

the

anchor

hand

li

ng

vesse

l

w

ill

reduce

gradua

ll

y

to m

i

n

i

mum

power/bo

ll

ard

pu

ll, i

n

the meant

i

me w

ill k

eep

pay

i

ng

out

on

the wor

k

w

i

re a

ll

ow

i

ng

the

we

i

ght

of

the

catenary

system

to

set

the

anchor

on

the

bottom

. T

he

vesse

l

w

ill

not

i

fy

the

r

i

g when

the

anchor

i

s

on

the

bottom

. N

o

e

x

tra

pu

ll

from

the

sh

i

p

s

i

de

shall

be

app

li

ed

once

the anchor

i

s

on

the bottom

.

T

he

sh

i

p w

ill k

eep

pos

i

t

i

on wh

il

e

the

r

i

g

t

i

ghten

up

the

cha

i

n

and

test

the

anchor

system

. T

he w

i

re

(

PCP

)

shall

be

k

ept

s

l

ac

k

at a

ll

t

i

mes

.

T

he

r

i

g w

ill

order

the

sh

i

p when

to

start

chas

i

ng

bac

k.

D. Chasing back

T

he

sh

i

p

w

ill

chase

bac

k

w

i

th

appro

xi

mate

l

y

1,4

t

i

mes

water

depth

w

i

re

l

ength

.

Use

tens

i

on

contro

l

on

sh

i

p

’

s w

i

nch

act

i

ve

l

y

to avo

i

d

catch

i

ng b

i

ght

on

r

i

g

cha

i

n

.

W

hen

c

l

os

i

ng

up

to

the

r

i

g

the

sh

i

p w

ill

start

to

heave

i

n

the wor

k

w

i

re

unt

il

the

PCP

connect

i

on

are

on

dec

k

and

secure

i

t

i

n

the w

i

re

stopper

. I

f

cha

i

n

ta

il i

s

f

i

tted

to PCP

,

th

i

s

i

s

to

be

secured

i

n

the w

i

re

stopper

.

W

hen

ordered

by

the

r

i

g

,

the

dec

k

crew

can

d

i

sconnect

the

PCP

connect

i

on

and

i

nsta

ll

the

p

i

c

k-

up w

i

re

for

the

r

i

g

crane

.

W

hen

the

r

i

g

crane

hoo

k i

s

i

nsta

ll

ed

,

and

conf

i

rmat

i

on

rece

i

ved

from

the

br

i

dge

,

the w

i

re

stopper

S

afety P

i

n

can

be

removed

.

W

hen

the

r

i

g

crane

i

s

ready

to

p

i

c

k

up

the

PCP

,

the

w

i

re

stopper

w

ill

be

re

l

eased

and

the

PCP

w

ill

be de

li

vered

.

I

mportant

:

W

hen d

i

sconnect

i

ng

the

pennant w

i

re

,

the

crew w

ill

ma

k

e

sure

that

the

li

ne

i

s

perfect

l

y

s

l

ac

k

and

there

i

s

no more

rema

i

n

i

ng

energy

rema

i

n

i

ng

on

the w

i

re

to

avo

i

d

any

sp

i

nn

i

ng

rotat

i

on

wh

il

e

dec

k

hands

are

wor

ki

ng

on

the

connect

i

on

. É

&&

R

emote

d

i

sconnect

i

on

of

the

w

i

re

i

s

genera

ll

y done by pu

lli

ng

on

the

opened

B

a

l

dt

li

n

k

w

i

th

a w

i

re

,

w

i

th no dec

k

hand

i

n

the

v

i

c

i

n

i

ty

.

W

hen board

i

ng

i

t

,

a

l

ways

ver

i

fy

that

the

sw

i

ve

l i

s

i

n

good

cond

i

t

i

on

(

no

crac

k

s

,

no damage

)

before

start

i

ng

any wor

k

on

the

li

ne

.

A

l

ways

have a M

OB

boat

ready

to

be

l

aunched when

crew aft

.

Vers

i

on

S

F

(BOS-

P

RD-0

7

01.000

5

-

ver

.

C

R). O

r

i

g

i

na

l D

ate:

3

1

/

12

/

201

5

.

Vers

i

on

D

ate:

N

/A

.

Va

li

d

vers

i

on

on

l

y on QM

S

s

i

te

.

Page

30

of

60

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

.

606