3.1.1 The BWTS is to be chosen taking into account the BWT’S operational capacity
and limiting conditions. See
Pt 5, Ch 1, 3.1 Availability for operation 3.1.2. The
BWTS is to be able to treat the ballast capacity of the vessel. The ballast capacity is
to be described either in terms of flowrate or volume depending on the type of BWTS.
3.1.2 The BWTS is to be designed for normal worldwide service unless stated
otherwise. Particular attention must be given to the ambient air temperature as required
in Pt 3, Ch 2, 2.1 Grades of steel 2.1.4.
3.1.3 Ballast
water system pressure drop due to the BWTS is to be compensated, as
required, to ensure that operation of the ballast water system is
not compromised.
3.1.4 Where
the BWTS, or its associated equipment, is in use for purposes other
than that required by Pt 5, Ch 25, 1.1 Purpose and Scope 1.1.1,
means should be provided to ensure that the BWTS is readily available
for the primary purpose of treating ballast water.
3.1.5 The
BWTS arrangement, including treatment units, filtration units, electrical
and control units, sampling arrangements, neutralising units with
associated piping and fittings, structural arrangements and hazardous
area classification, where applicable, shall be subjected to appraisal
and be acceptable to LR.
3.1.6 The
design of BWTS equipment is to minimise the risk of fire, overheating,
explosion and asphyxiation hazards arising from the use and/or production
of chemicals and other substances. See
Pt 5, Ch 25, 9.1 General 9.1.6.
3.1.7 The
build-up of hazardous material in ballast pipes and in ballast tanks
is to be prevented.
3.1.8 Ballast
tank coatings are not to be affected by the prolonged exposure to
any hazardous materials that may be released into the ballast water.