SIST EN ISO 15749-3:2004

Ships and marine technology - Drainage systems on ships and marine structures - Part 3: Sanitary drainage, drain piping for vacuum system (ISO 15749-3:2004)

ISO 15749-3:2004 applies to the design of sanitary drain lines in vacuum systems on ships and marine structures.
For planning and basic requirements, see ISO 15749-1.

Schiffe und Meerestechnik - Entwässerungsanlagen auf Schiffen und Seebauwerken - Teil 3: Sanitär-Entwässerung, Abflussleitungen im Vakuumsystem (ISO 15749-3:2004)

Diese Norm gilt für die Konstruktion von Sanitär-Abflussleitungen im Vakuumsystem auf Schiffen und Seebau-werken.
Für die Planung und grundsätzlichen Anforderungen gilt ISO 15749-1.

Navires et technologie maritime - Installations de drainage sur navires et structures maritimes - Partie 3: Drainage sanitaire, conduits de décharge au systeme de vide (ISO 15749-3:2004)

Ladje in pomorska tehnologija – Sistemi za odvajanje vode/odplak z ladij in struktur na morju – 3. del: Sanitarni sistem, odtočne cevi za vakuumski sistem (ISO 15749-3:2004)

General Information

• Status: Published
• Publication Date: 31-Aug-2004
• ICS: 47.020.30 - Piping systems
• Technical Committee: SS SPL - Technical Board for the general field
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Sep-2004
• Due Date: 01-Sep-2004
• Completion Date: 01-Sep-2004
• Ref Project: EN ISO 15749-3:2004 - Ships and marine technology - Drainage systems on ships and marine structures - Part 3: Sanitary drainage, drain piping for vacuum system (ISO 15749-3:2004)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 15749-3:2004
01-september-2004
/DGMHLQSRPRUVNDWHKQRORJLMD±6LVWHPL]DRGYDMDQMHYRGHRGSODN]ODGLMLQ
VWUXNWXUQDPRUMX±GHO6DQLWDUQLVLVWHPRGWRþQHFHYL]DYDNXXPVNLVLVWHP
,62
Ships and marine technology - Drainage systems on ships and marine structures - Part
3: Sanitary drainage, drain piping for vacuum system (ISO 15749-3:2004)
Schiffe und Meerestechnik - Entwässerungsanlagen auf Schiffen und Seebauwerken -
Teil 3: Sanitär-Entwässerung, Abflussleitungen im Vakuumsystem (ISO 15749-3:2004)
Navires et technologie maritime - Installations de drainage sur navires et structures
maritimes - Partie 3: Drainage sanitaire, conduits de décharge au systeme de vide (ISO
15749-3:2004)
Ta slovenski standard je istoveten z: EN ISO 15749-3:2004
ICS:
47.020.30 Sistemi cevi Piping systems
SIST EN ISO 15749-3:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 15749-3:2004

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SIST EN ISO 15749-3:2004

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SIST EN ISO 15749-3:2004

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SIST EN ISO 15749-3:2004


INTERNATIONAL ISO
STANDARD 15749-3
First edition
2004-05-01


Ships and marine technology —
Drainage systems on ships and
marine structures —
Part 3:
Sanitary drainage, drain piping for
vacuum systems
Navires et technologie maritime — Installations de drainage sur navires
et structures maritimes —
Partie 3: Drainage sanitaire, conduits de décharge au système de vide




Reference number
ISO 15749-3:2004(E)
©
ISO 2004

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SIST EN ISO 15749-3:2004
ISO 15749-3:2004(E)
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©  ISO 2004
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
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Published in Switzerland

ii © ISO 2004 – All rights reserved

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SIST EN ISO 15749-3:2004
ISO 15749-3:2004(E)
Contents Page
Foreword. iv
1 Scope. 1
2 Normative references . 1
3 Terms and definitions. 2
4 Vacuum system. 2
5 Pipes. 3
6 Fittings . 4
7 Laying of drain lines . 5
8 Capacity of drain lines. 7
9 Collector tank and sewage treatment plant. 7
10 Determination of air capacity. 8
11 Testing and operation of pipelines . 9
12 Disposal . 9
13 System example . 9
Annex A (informative) Example of a cleaning direction within an operating instruction for the
cleaning of a pipe system by pickling . 11
Annex B (normative) Test methods. 17
Bibliography . 20

© ISO 2004 – All rights reserved iii

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SIST EN ISO 15749-3:2004
ISO 15749-3:2004(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 15749-3 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

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SIST EN ISO 15749-3:2004
INTERNATIONAL STANDARD ISO 15749-3:2004(E)

Ships and marine technology — Drainage systems on ships
and marine structures —
Part 3:
Sanitary drainage, drain piping for vacuum systems
1 Scope
This part of ISO 15749 applies to the design of sanitary drain lines in vacuum systems on ships and marine
structures.
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.
1)
IMO Resolution A.753 (18), Guidelines for the application of plastic pipes on ships
ISO 65, Carbon steel tubes suitable for screwing in accordance with ISO 7-1
ISO 264, Unplasticized polyvinyl chloride (PVC) fittings with plain sockets for pipes under pressure — Laying
lengths — Metric series
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 with specified room temperature properties
ISO 9330-1, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 1: Unalloyed
steel tubes with specified room temperature properties.
ISO 15749-1, Ships and marine technology — Drainage systems on ships and marine structures — Part 1:
Sanitary drainage-system design
ISO 15749-4, Ships and marine technology — Drainage systems on ships and marine structures — Part 4:
Sanitary drainage, sewage disposal pipes

1) Published by International Maritime Organization, London.
Available from IMO Secretariat, Publications Section, 101-104 Piccadilly, London W1V, United Kingdom.
© ISO 2004 – All rights reserved 1

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SIST EN ISO 15749-3:2004
ISO 15749-3:2004(E)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 15749-1 apply.
4 Vacuum system
4.1 Functional description
The vacuum drainage system operates as follows:
 wastewater is collected from water closets, urinals, and bidets or from other drainage items in branch
lines or manifolds;
 the wastewater is carried by means of the vacuum to a wastewater collector tank or a sewage treatment
plant.
The wastewater is evacuated in the form of a “plug” (sewage plug) owing to a pressure difference in the pipes
before and behind the plug.
4.2 Description
4.2.1 Drain lines in the vacuum system commence at the drain of a drainage item.
Vacuum-operated water closets have an integrated vacuum mechanism, other drainage items are connected
to a separate vacuum valve via a short non-vacuum line.
Drain lines in the vacuum system terminate at a vacuum-generating unit.
4.2.2 The wastewater is conveyed through pressure pipes from the vacuum generation unit to a collector
tank or sewage treatment plant.
NOTE The vacuum-generating unit may also be integrated into the collector tank or sewage treatment plant.
4.2.3 The sewage disposal pipes downstream of the collector tank or sewage treatment plant are not part of
the vacuum system.
For the design of these and other pressure pipes, ISO 15749-4 is applicable.
Figure 2 of this standard shows an example of a vacuum-operated drainage system with drain lines.
4.2.4 Depending on the ship type, its architecture, arrangement of ship's rooms and number of persons,
one, two or more vacuum sewage systems, which serve separate sections of a ship, can be provided.
4.3 Operating pressure
The operating pressure is between 0,4 bar and 0,7 bar absolute pressure (corresponding to a permissible
negative pressure of between − 0,3 bar and − 0,6 bar).
4.4 Drainage items
4.4.1 Vacuum-operated water closet
A water closet fitted with a mechanism for drain and flush valve control shall be provided.
The water volume for one flushing operation is approximately 1,2 litres.
2 © ISO 2004 – All rights reserved

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SIST EN ISO 15749-3:2004
ISO 15749-3:2004(E)
4.4.2 Urinals and bidets
These sanitary drainage items do not have built-in vacuum mechanisms and shall therefore be connected to a
separate vacuum mechanism (vacuum valve) via connecting lines.
4.4.3 Washbasins and other drainage items
These sanitary drainage items do not have built-in vacuum mechanisms and shall therefore be connected to a
separate vacuum mechanism (vacuum valve) via connecting lines.
5 Pipes
Depending on the location, the following pipes shall be used for vacuum drain lines and vent lines:
 steel pipes in accordance with 5.1;
 steel pipes and CuNiFe pipes with spigot and socket joints, hereinafter referred to as spigot and socket
pipes;
 CuNiFe pipes in accordance with 5.3;
 PVC-U pipes in accordance with 5.4; plastic pipes shall be approved in accordance with IMO-Resolution
A.753 (18);
 pipes with low flame spread and smoke emission properties are at the discretion of the classification
society.
For nominal bores see Table 1.
Table 1 — Nominal bores for drain lines
Type of pipe Steel and CuNiFe pipes PVC-U and spigot and socket pipes
40 40
Nominal bore, NB
50 50
100 —
5.1 Steel pipes
The following types of pipes are applicable:
 seamless steel pipes in accordance with ISO 4200 and ISO 9329-1, of S 235 JR;
 welded steel pipes in accordance with ISO 4200 and ISO 9330-1, of S 235 JR;
 threaded pipes in accordance with ISO 65, of S 185.
For outside diameter and wall thickness see Table 2.
© ISO 2004 – All rights reserved 3

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SIST EN ISO 15749-3:2004
ISO 15749-3:2004(E)
Table 2 — Dimensions of steel pipes
Outside diameter, d Wall thickness, s
min
Nominal bore, NB
mm mm
40 48,3 2,3
50 60,3 2,3
100 114,3 3,2
5.2 Spigot and socket pipes
Spigot and socket pipes with dimensions in accordance with Table 3 are applicable. Also, CuNi10Fe1,6Mn
pipes with these dimensions are applicable.
Table 3 — Dimensions of spigot and socket pipes
Outside diameter, d Wall thickness, s
min
Nominal bore, NB
mm
mm
40 42 1,4
50 53 1,4
5.3 CuNiFe pipes
CuNi10Fe1,6Mn pipes with dimensions in accordance with Table 4 are applicable.
Table 4 — Dimensions of CuNiFe pipes
Wall thickness, s
Outside diameter, d
min
Nominal bore, NB
mm
mm
40 44,5
2
50 57
5.4 PVC-U pipes
Pipes with dimensions in accordance with Table 5 are applicable.
Table 5 — Dimensions of PVC-U pipes
Wall thickness, s
Outside diameter, d
min
Nominal bore, NB
mm
mm
40 50 3,7
50 63 4,7
6 Fittings
6.1 Requirements
Fittings shall be suitable for vacuum use in accordance with 4.3. Shut-off valves shall provide smooth passage.
4 © ISO 2004 – All rights reserved

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SIST EN ISO 15749-3:2004
ISO 15749-3:2004(E)
6.2 Testing
Testing for tightness is specified in B.2.
7 Laying of drain lines
7.1 Line routing
In accordance with ISO 15749-1, vacuum drain lines may run in any direction. However, changes in direction
at short intervals should be avoided.
7.2 Horizontal laying
7.2.1 Gradient
Horizontally laid piping should have a slight gradient (approximately 2:1 000) towards the point of suction.
7.2.2 Water traps
Water traps shall be integrated into horizontally installed pipes at distances of not more than 40 m,
immediately before riser branches.
7.3 Connecting lines
Non-vacuum lines connecting drainage units to vacuum valves shall have an adequate gradient of not less
than 2:1 000. Unimpeded supply with venting of the line, if required, shall be ensured.
7.4 Riser branches
7.4.1 Not more than three vacuum toilets or vacuum valves may be connected to one riser branch, all of
which shall be located on the same deck. The length of the riser branch shall not exceed one deck height
(max. 3 m). Longer branches should be subject to the manufacturer's consent.
NOTE It is assumed that the max. three items will not be operated simultaneously.
7.4.2 If only one vacuum toilet or vacuum valve is connected, the riser branches may pass through more
than one deck, provided a horizontal conduit with a safety device against back flow is installed on each deck.
See Figure 2.
7.4.3 Immediately before the riser branch feeds into the horizontal manifold, a vacuum no-return fitting
should be installed above the manifold, unless there is an elevation of the line of 3 × d at the inlet.
7.4.4 If a collecting pipeline feeds into the horizontal manifold from above, a device preventing back flow
should be installed just before the connection of a riser branch to the manifold.
7.5 Feeding pipes
The angle at which pipes feed into manifolds in the direction of flow shall not exceed 45°. Tees and 90°
elbows may not be used. Connections from below, or located opposite to each other, are not permitted (see
examples in Figure 1). The internal su
...