ISO 15083:2020 pdf download Small craft — Bilge-pumping systems
Bilge water compartments not readily accessible shall have a bilge pump installed.The pump may bemanually, mechanically or electrically operated.
Type(s), number(s) and location(s) of bilge-pumping systems shall be in accordance with therequirements in 5.i.2 and 5.1.3.
5.1.2 Non fully enclosed boats
A bilge pumping system is not required for boats without bilge compartments, but a means of bailingshall be specified in the owner’s manual.
A bilge pumping system is required for non-fully enclosed boats with bilge compartments.NOTE This includes open and partially protected boats.
5.1.3 Fully enclosed boats
5.1.3.1 General
Fully enclosed boats shall be fitted with one or more bilge pumping systems according to therequirements in 5.1.3.2 and 5.1.3.3.
5.1.3.2 Primary bilge pumping systemsFor craft in design categories A,B and C:
a) a bilge pumping system shall be installed, permanently attached to the boat structure,
b)the activation of the bilge pumping system shall be in the vicinity of, and readily accessible from,the main steering position as specified in ISO 11591:2019.
For craft in design category D:
一 if L, is greater than 6 m, one bilge-pumping system shall be installed;
– if Ly is less than or equal to 6 m, one bilge pumping system or means of bailing shall be available,
which shall be specified in the owner’s manual.
5.1.3.3Secondary bilge pumping systems
For craft in design categories A, B and C, one additional manual, mechanical or electric bilge pumpor bilge-pumping system shall be installed, which shall be capable of removing water from all bilgecompartments and which shall be operable from a readily accessible position.
For craft of design category C fulfilling basic or level flotation requirements as specified inISO 12217-1:2015,iso 12217-2:2015 and ISo 12217-3:2015, no secondary bilge pump is required.
5.2Summary of requirements
Table 2 is a summary of the requirements listed in 5.1.
5.3 Capacity
The combined capacity of the bilge pump systems installed according to 5.1.2 or 5.1.3 and as per the bilge pump manufacturers installation instructions, shall be not less than:
— 600 l/h for boats with L H less than or equal to 6 m,
— 900 l/h for boats with L H greater than 6 m and less than 12 m, or
— 1 800 l/h for boats with L H greater than or equal to 12 m.
For manual bilge pumps, the capacity shall be rated for 45 strokes per minute or less.
When assessing the discharge capacity of the system the water head losses shall be considered.
6 Design and construction
6.1 General
6.1.1 The design and construction of bilge-pumping systems shall withstand the pressures,temperatures and stresses likely to be encountered under normal operating conditions.
Bilge pumps shall be operable within temperature limits ranging from 0 °C to + 60 °C and shall withstand storage temperatures, without operation, of −40 °C to +60 °C when in the dry condition.
6.1.2 Spigots/spuds of bilge pumps and other components shall be long enough to provide support for the hose and permit the use of a clamp.
6.1.3 Unless permanently fitted, manual bilge-pump handles shall be secured to minimize the risk of accidental loss.
6.1.4 Bilge pumps systems shall not discharge into a recess nor be connected to recess drains.
6.2 Electrically operated pumps
6.2.1 Electric bilge pumps shall comply with ISO 8849:2003.
6.2.2 Electrical installations shall meet the requirements in lSO 13297:2014 (a.c.) andISO 10133:2012 (d.c.).
6.2.3 Where control switches are subject to spray water, they shall be water resistant to a degree ofIP 56 according to IEC 60529:1989/AMD2:2013]COR1:2019.
7 Installation
7.1 Bilge pumps shall be mounted in an accessible location for servicing and clearing the intake.
7.2 Bilge-pump water inlets (e.g. strainers) shall be designed and installed to minimize ingestion ofdebris likely to cause pump failure and shall be accessible for cleaning.
7.3 Intake hoses shall not collapse under maximum pump suction.
7.4 Bilge-pump pipes and hoses shall be installed to minimize flow restriction.
7.5Outlets on the hull shall be above the heeled waterline (3.7),unless a metallic seacock isinstalled in accordance with IS0 9093-1:1994 or a non-metallic seacock is installed in accordance withISo 9093-2:2002 and there is a means to prevent backflow into the boat.
7.6 Where several pumps discharge through one through-hull fitting, the system shall be designedso that the operation of one pump does not feedback through another pump, and the simultaneousoperation of the pumps does not diminish the pumping capacity of the system.
7.7Hose connections shall be secured with a non-corrosive type of clamp, or with permanentyattached end-fittings.
7.8 Non-submersible bilge pump motors shall be located above the critical bilge water level (3.6).
7.9 Each individual electrical bilge pump shall be provided with a readily accessible manual power-supply switch.
7.10 Bilge pumps with automatic controls shall be provided with a readily accessible manual power-supply switch.
7.11 Controls for automatic bilge pumps shall be provided with a visual indication by the switch positionor a light when the bilge pump is set to operate in the automatic mode.ISO 15083-2020