EN ISO 15749-5:2004

Ships and marine technology - Drainage systems on ships and marine structures - Part 5: Drainage of decks, cargo spaces and swimming pools (ISO 15749-5:2004)

ISO 15749-5:2004 applies to the planning and design of drain lines for gravity-operated conveyance of grey water from weather decks and non-weathertight spaces on ships and marine structures, ro-ro spaces, cargo spaces and swimming pools.

Schiffe und Meerestechnik - Entwässerungsanlagen auf Schiffen und Seebauwerken - Teil 5: Decks-, Laderaum- und Schwimmbecken-Entwässerung (ISO 15749-5:2004)

Diese Norm gilt für die Planung und Konstruktion von Entwässerungsleitungen zur Ableitung von Grauwasser im Schwerkraftsystem von
¾ freien Decks und nicht wetterdichten Räumen auf Schiffen und Seebauwerken,
¾ Fahrzeugdecks auf Fährschiffen,
¾ Laderäumen auf Schiffen,
¾ Schwimmbecken.
ANMERKUNG   Abwasser aus Räumen, die dem Tiertransport dienen, ist Schwarzwasser und nach den MARPOL-Bestimmungen zu beseitigen. Für die Ableitung von Schwarzwasser siehe ISO 15749-2 und ISO 15749-3.
Für die Planung und grundsätzlichen Anforderungen gilt ISO 15749-1.

Navires et technologie maritime - Installations de drainage sur navires et structures maritimes - Partie 5: Drainage des ponts, des cales et des piscines (ISO 15749-5:2004)

Ladje in pomorska tehnologija – Sistemi za odvajanje vode/odplak z ladij in struktur na morju – 5. del: Odvajanje vode/odplak s krova, skladišč za tovor in plavalnih bazenov (ISO 15749-5:2004)

General Information

• Status: Published
• Publication Date: 30-Apr-2004
• Withdrawal Date: 29-Nov-2004
• ICS: 47.020.30 - Piping systems
• Technical Committee: CEN/TC 300 - Sea-going vessels and marine technology
• Drafting Committee: CEN/TC 300 - Sea-going vessels and marine technology
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 01-May-2004
• Completion Date: 01-May-2004
• Ref Project: SIST EN ISO 15749-5:2004 - Ships and marine technology - Drainage systems on ships and marine structures - Part 5: Drainage of decks, cargo spaces and swimming pools (ISO 15749-5:2004)

Overview

EN ISO 15749-5:2004 is an international standard developed by the International Organization for Standardization (ISO) and ratified by the European Committee for Standardization (CEN). It specifically addresses the planning and design of drainage systems on ships and marine structures with a focus on the gravity-operated conveyance of grey water. This grey water originates from various on-board areas including weather decks, non-weathertight spaces, ro-ro spaces, cargo spaces, and swimming pools.

This standard supports maritime engineers, shipbuilders, and marine system designers in ensuring efficient, safe, and compliant drainage solutions that prevent water accumulation and promote vessel safety and hygiene.

Key Topics

• Scope of Drainage Systems: Covers drainage from exposed decks, cargo holds, ro-ro and vehicle decks, swimming pools, and non-weathertight spaces.
• Gravity Drainage Principle: Emphasizes gravity-operated drain line design for effective wastewater conveyance without the need for pumps or treatment plants.
• Material Specifications: Details on steel piping types, dimensions, and wall thickness suited for marine drainage environments.
• Drainage Capacity & Pipe Sizing: Provides guidance on nominal bore sizes from 40mm to 150mm and their corresponding drainage capacities (up to 13.8 liters/second).
• Design of Drain Lines & Shut-off Fittings: Requirements for non-return valves, shut-off fittings, and prevention of backflow are addressed, referencing Part 4 of ISO 15749.
• Special Conditions for Cargo Holds and Swimming Pools: Procedures to ensure drainage under ship list conditions, including collector tanks with alarms and emergency drainage protocols.
• Wastewater Discharge Locations: Guidelines on situating discharge outlets to avoid contamination risks near gangways or lifeboat launch areas.

Applications

EN ISO 15749-5:2004 is essential for:

• Shipbuilding and Marine Engineering: Designing compliant drainage systems adapted to various sea vessel types including passenger ships, cargo ships, and ro-ro ferries.
• Maintenance and Retrofit of Drainage Systems: Upgrading drainage infrastructure on existing ships and marine structures to adhere to international standards.
• Environmental Compliance: Properly managing grey water discharge in line with MARPOL regulations and preventing pollution of sensitive marine environments.
• Safety Management: Ensuring that drainage prevents water accumulation on decks, minimizing hazards such as slipping and structural damage.
• Design of Swimming Pools on Ships: Addressing both exposed and indoor pool drainage by ensuring direct overboard discharge or closed systems with appropriate fittings.

Related Standards

EN ISO 15749-5:2004 forms part of a comprehensive series on marine drainage systems:

• ISO 15749-1: Sanitary drainage-system design – foundational planning principles.
• ISO 15749-2 & 15749-3: Drain piping for gravity and vacuum systems – cover sewage and blackwater drainage.
• ISO 15749-4: Sanitary drainage and sewage disposal pipes – includes detailed shut-off devices and fittings.
• ISO 65, ISO 4200, ISO 9329-1, ISO 9330-1: Standards that define steel pipe types, technical delivery, and dimensions referenced for drainage piping materials.

---

By implementing EN ISO 15749-5:2004, shipbuilders and marine designers ensure reliable, durable, and standardized drainage systems that contribute to vessel operational safety and environmental stewardship. This standard is a critical asset for maritime professionals involved in the engineering and maintenance of onboard water management infrastructure.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2004
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VWUXNWXUQDPRUMX±GHO2GYDMDQMHYRGHRGSODNVNURYDVNODGLãþ]DWRYRULQ
SODYDOQLKED]HQRY,62
Ships and marine technology - Drainage systems on ships and marine structures - Part
5: Drainage of decks, cargo spaces and swimming pools (ISO 15749-5:2004)
Schiffe und Meerestechnik - Entwässerungsanlagen auf Schiffen und Seebauwerken -
Teil 5: Decks-, Laderaum- und Schwimmbecken-Entwässerung (ISO 15749-5:2004)
Navires et technologie maritime - Installations de drainage sur navires et structures
maritimes - Partie 5: Drainage des ponts, des cales et des piscines (ISO 15749-5:2004)
Ta slovenski standard je istoveten z: EN ISO 15749-5:2004
ICS:
47.020.30 Sistemi cevi Piping systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ISO
STANDARD 15749-5
First edition
2004-05-01
Ships and marine technology —
Drainage systems on ships and
marine structures —
Part 5:
Drainage of decks, cargo spaces and
swimming pools
Navires et technologie maritime — Installations de drainage sur navires
et structures maritimes —
Partie 5: Drainage des ponts, des cales et des piscines

Reference number
ISO 15749-5:2004(E)
©
ISO 2004
ISO 15749-5:2004(E)
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ii © ISO 2004 – All rights reserved

ISO 15749-5:2004(E)
Contents Page
Foreword. iv
1 Scope. 1
2 Normative references . 1
3 Terms and definitions. 2
4 Drainage of exposed decks and non-weathertight spaces . 2
5 Drainage of cargo holds on bulkhead decks of passenger ships and on freeboard decks,
respectively, and on vehicle decks of cargo ships . 3
6 Drainage of swimming pools . 3
7 Wastewater discharges . 4
8 Shut-off fittings (closing devices) . 4
9 Piping . 4
Annex A (informative) Diagram for the calculation of the amount of drainage . 7

ISO 15749-5:2004(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 15749-5 was prepared by Technical Committee ISO/TC 8, Ships and marine technology, Subcommittee
SC 3, Piping and machinery.
ISO 15749 consists of the following parts, under the general title Ships and marine technology — Drainage
systems on ships and marine structures:
— Part 1: Sanitary drainage-system design
— Part 2: Sanitary drainage, drain piping for gravity systems
— Part 3: Sanitary drainage, drain piping for vacuum systems
— Part 4: Sanitary drainage, sewage disposal pipes
— Part 5: Drainage of decks, cargo spaces and swimming pools

iv © ISO 2004 – All rights reserved

INTERNATIONAL STANDARD ISO 15749-5:2004(E)

Ships and marine technology — Drainage systems on ships
and marine structures —
Part 5:
Drainage of decks, cargo spaces and swimming pools
1 Scope
This part of ISO 15749 applies to the planning and design of drain lines for gravity-operated conveyance of
grey water from
 weather decks and non-weathertight spaces on ships and marine structures,
 ro-ro spaces,
 cargo spaces, and
 swimming pools.
NOTE Wastewater from spaces in which live animals are accommodated is classified as sewage water and shall be
discharged in accordance with MARPOL regulations. For drainage of sewage, see ISO 15749-2 and ISO 15749-3.
For planning and basic requirements, see ISO 15749-1.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 65, Carbon steel tubes suitable for screwing in accordance with ISO 7-1
ISO 4200, Plain end steel tubes, welded and seamless — General tables of dimensions and masses per unit
length
ISO 9329-1, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 1: Unalloyed
steels wi
...