624-Hygiene / 748
H
ygiene
BOS-PRD-0304.900902
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a
Other significant risk findings of the assessment, which could not be improved,
should
be recorded in the
Risk areas description.
Measures
should
be taken in compliance with this Risk control plan in order to deal with the controllable
risks. The measures
should
be described in the Risk form.
The following items
should
be recorded:
x
Description of the system;
x
Plans or schematic drawings of the systems;
x
A Risk assessment;
x
Improvements for the system and planning;
x
A written scheme of actions and control measures;
x
Names and position of people responsible for carrying out the various tasks and details of
precautionary measures that have been carried out, including sufficient detail to show that they were
carried out correctly and the dates on which they were carried out;
x
Remedial work required and carried out, and the date of completion.
A log detailing:
x
Bunkering and disinfectant dosing;
x
Temperature measurements at water heaters;
x
Flushing programs for cabins and other tap points (temporarily) not in use;
x
Exceptional activities like: Flushing, cleaning and disinfection; visits by contractors, consultants and
other personnel; Sampling of water and the results of the chemical analysis;
x
Maintenance and changes;
x
The signature of the person carrying out the work or other form of authentication where appropriate;
x
A description of the involved Legionella prevention jobs
should
be documented. Legionella
prevention jobs
should
be included as part of the planned maintenance system.
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a
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a
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This plan is intended to be a written scheme for controlling the risk, which
should
be implemented and
properly managed.
Precautions
should
be taken for other equipment and water systems, where appropriate, to avoid formation
of aerosols, to avoid stagnant (still stand) water and to avoid water temperatures between 25 and 60
degrees Celsius. Other systems and equipment might be high pressure cleaners, windscreen washers, water
hoses, etc.
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a
tment &
s
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m
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l
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In order to warrantee a certain bacterial harmlessness, it is necessary to maintain a residual free chlorine
rate. This constant residual free chlorine rate, as thin as possible (0.1mg/l minimum, but 0.3 mg/l as
recommended in fresh water tanks) allows to prevent potential growth of bacteriae.
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 QHSE Coordinator. Approved by: BOS QHSES Manager. Validated by: BOS Quality Representative
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