537-Permit To Work / 748
P
er
m
it to
W
or
k
BOS-PRD-03.900902
x
A lifebuoy with suitably long lifeline
shall
be readily available at the work site. It is also advisable to
float another life-buoy in the water adjacent to the work area for immediate access if a person falls
into the water;
x
Any applicable authorities (
H
a
r
b
o
u
r M
as
ter
, etc.)
shall
be informed;
x
Engine
Wa
t
c
h O
ff
i
c
er
informed if any over-side/outboard work is to take place in the vicinity of any
overboard discharges;
x
As applicable, Lock-Out/Tag-Out instructions
shall
be followed.
4.1
2 E
le
c
tri
ca
l
sys
te
ms
A PTW is required for all work on electrical systems involving electric current greater than 50 volts in:
x
Electrical panels;
x
Cabinets including engine room, bridge and galley control panels;
x
Power circuits;
x
Switchboards;
x
Alternators.
The primary hazards associated with working on electrical systems are exposure to electrical current, burns,
and unexpected start-ups of equipment.
The Electrical Systems identifies necessary safety measures.
(PTW # 2 Electrical Isolation, BOS-FRM-
03.0021).
P
re
cau
tio
ns &
A
wa
re
n
e
ss
x
Be aware that even when an electrical or electronic unit is isolated, it may still have stored energy or
a secondary control feed into it that is not included in the main feed isolation box;
x
Identification and use of the correct Personal Protective Equipment (PPE);
x
Ensure that all relevant personnel are informed;
x
Lock-Out/Tag-Out
shall
be used to ensure applicable equipment is removed from service/isolated
from sources of power or heat;
x
It is necessary to ensure that the flow of energy (electricity) has been completely stopped and that
the system cannot cause injury;
x
For optimal safety the work area
shall
be cordoned off, warning notices posted and all personnel not
involved with the task kept clear.
4.1
3 P
re
ssu
ri
z
e
d
sys
te
ms (PTW
>
7 ba
r
s)
A PTW is required for work on systems involving the flow of fluids under 7 bars of pressure such as
hydraulic-powered equipment (winches, windlass, cranes, rotative brushes etc.)
(PTW # 5 Pressurised
Systems, BOS-FRM-03.0020)
.
The primary hazards associated with working on pressurised systems are exposure to pressurised fluid and
unexpected start-ups of equipment.
The Pressurised Systems PTW identifies the safety measures necessary.
P
re
cau
tio
ns &
A
wa
re
n
e
ss
x
Identification and use of the correct Personal Protective Equipment (PPE) according to PPE matrix;
(wear Safety Goggles)
x
Lock-Out/Tag-Out instruction
shall
be used to ensure equipment is removed from service/isolated
from sources of power or heat;
x
The de-pressuring system and all limitations is to be fully reviewed and understood by those
assigned to work on any pressurised system;
x
Gauges and other instruments (as applicable)
shall
be constantly monitored;
Version 04. Original date: 25/05/2012. Version date: 31/12/2014. Valid version only on QMS site. Uncontrolled document when printed.
Procedure prepared by: BOS QHSES Coordinator. Approved by: BOS QHSES Manager. Validated by: BOS Quality Representative.
13 / 17
537