EN ISO 15749-3:2004 PDF

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

Название (английский):

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)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 22
Дата публикации:: 1 мая 2004 г.
Издание:: CEN EN 15749 edition 1 version 1
ICS:: 47.020.30

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Описание (английский):

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.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN ISO 15749-3:2004 - Ships and marine technology - Drainage systems on ships and marine structures - Part 3: Sanitary drainage, drain piping for vacuum systems (ISO 15749-3:2004) is a technical standard adopted by CEN that specifies design requirements for sanitary drain lines in vacuum sewage systems used on ships and marine structures. It complements ISO 15749-1 (planning and basic requirements) and addresses materials, pipe dimensions, installation practice, testing and system layout for vacuum-operated sanitary drainage.

Key topics and requirements

Scope and function: Covers design of drain lines that convey wastewater as sewage “plugs” by vacuum pressure to a collector tank or sewage treatment plant. Downstream pressure/disposal piping is covered in ISO 15749-4.

Operating pressure: Typical absolute pressure range 0.4–0.7 bar (permissible negative pressure approx. −0.3 to −0.6 bar).

Sanitary fixtures: Vacuum-operated water closets (approx. 1.2 l flush) and other sanitary items connected via vacuum valves are addressed.

Pipe materials & nominal bores:

Steel (seamless, welded, threaded) - NB 40, 50, 100 with specified OD and wall thickness.
CuNiFe / CuNi10Fe1.6Mn and spigot/socket pipes - NB 40, 50.
PVC‑U (IMO A.753 approval required for plastic on ships) - NB 40, 50.

Fittings and valves: Components must be suitable for vacuum use; shut-off valves must provide smooth passage. Tightness testing referenced in Annex B.

Laying and routing:

Pipes may run in any direction but avoid frequent direction changes.
Horizontal gradient ≈ 2:1 000 toward suction point.
Water traps every ≤ 40 m before riser branches.
Riser branches: max three vacuum toilets/valves per riser (same deck), riser length ≤ one deck (~3 m) unless manufacturer consents.
Feeding angles to manifolds ≤ 45°; no tees or 90° elbows into manifolds.
Bend radius ≥ 3 × outer diameter.

Cleaning & maintenance: Cleaning openings and access (hex plugs, blank flanges, ball valves, molded PVC fittings) must be provided where cleaning otherwise impossible.

System capacity & manifolds: Guidance on maximum numbers per branch and manifold sizing; main sewers for >6 manifolds should be NB 100.

Applications and users

This standard is essential for:

Naval architects and ship designers planning sanitary vacuum drainage systems

Marine mechanical/plumbing engineers and shipbuilders specifying piping and fittings

Classification societies and shipyards evaluating conformity and safety

Operators and ship maintenance teams implementing installation, testing, cleaning and commissioning procedures

Suppliers of vacuum toilets, vacuum valves, collector tanks and sewage treatment plants

Keywords: EN ISO 15749-3:2004, vacuum drainage systems, sanitary drainage, ships, marine structures, drain piping, vacuum-operated water closet, PVC-U, CuNiFe, steel pipes, marine piping systems.

EN ISO 15749-3:2004 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and users

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