Page 421 - International safety guide for oil tankers and terminals

SAFETY MANAGEMENT

54. The fixed and portable oxygen analysers have been calibrated and are
working properly.
---ใช้เพื่อการศึกษาเท่านั้น---
All fixed and portable oxygen analysers should be tested and checked as
required by the Company and/or manufacturer’s instructuctions and should be
operating correctly.
under or over-pressurisation. In this mode of operation, each tank pressure will์นาวี
The in-line oxygen analyser/recorder and sufficient portable oxygen analysers
should be working properly.

The calibration certificate should show that its validity is as required by the
ship’s SMS.

งานห้องสมุด ศูนย์ฝกพาณิชย
55. All the individual tank IG valves (if fitted) are correctly set and locked.
For both loading and discharge operations, it is normal and safe to keep all
individual tank IG supply valves (if fitted) open in order to prevent inadvertent

be the same as the deck main IG pressure and thus the P/V breaker will act as
a safety valve in case of excessive over or under-pressure. If individual tank IG
supply valves are closed for reasons of potential vapour contamination or
de-pressurisation for gauging etc, then the status of the valve should be clearly
indicated to all those involved in cargo operations. Each individual tank IG valve
should be fitted with a locking device under the control of a Responsible Officer.

56. All personnel in charge of cargo operations are aware that, in the case of
failure of the inert gas plant, discharge operations should cease and the
terminal be advised. ึ

In the case of failure of the IG plant, the cargo discharge, de-ballasting and tank
cleaning operations should cease and the terminal be advised.
Under no circumstances should the ship’s officers allow the atmosphere in any
tank to fall below atmospheric pressure.

If the ship is fitted with a crude oil washing (COW) system, and
intends to crude oil wash, the following statements should be
addressed:

57. The Pre-Arrival COW Check-List, as contained in the approved COW Manual,
has been satisfactorily completed.
The approved Crude Oil Washing Manual contains a Pre-Arrival Crude Oil
Washing Check-List, specific to each ship, which should be completed by the
Responsible Officer prior to arrival at every discharge port where it is intended
to undertake Crude Oil Washing.

58. The COW check-lists for use before, during and after COW, as contained in
the approved COW Manual, are available and being used.
The approved Crude Oil Washing Manual contains a Crude Oil Washing
Check-List, specific to each ship, for use before, during and after Crude Oil
Washing operations. This Check-List should be completed at the appropriate
times and the Terminal Representative should be invited to participate.

© ICS/OCIMF/IAPH 2006 387