SIST EN ISO 5620-2:2000

• Abstract:

  Specifies the technical details of the components of the drinking water filling connection aboard ships for attachment of piping from another ship or from a land distribution system and lays down the designation of the main components such as flanges, securing bolts and gasket.

• Status: Published
• Publication Date: 30-Nov-2000
• 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-Dec-2000
• Due Date: 01-Dec-2000
• Completion Date: 01-Dec-2000
• Ref Project: EN ISO 5620-2:1996 - Shipbuilding and marine structures - Filling connection for drinking water tanks - Part 2: Components (ISO 5620-2:1992)

SIST EN ISO 5620-2:2000 specifies the component details for a shipboard drinking water filling connection. It covers the parts used to connect piping from another ship or from a land distribution system, so designers, builders, suppliers and inspectors can work to the same flange, fastener and seal specification.

What does SIST EN ISO 5620-2:2000 specify?

SIST EN ISO 5620-2:2000 defines the components of the filling connection and how the main parts are designated. Part 1 covers the general requirements, the composition and the designation of the complete filling connection, while this part focuses on the individual components.

The standard is organized into clauses for:

• the three flanges
• the securing bolt
• the gasket
• stud-bolts and nuts
• the padlock
• the securing chain

The figures give the dimensional information for the parts, and the text gives the material and designation rules. In practice, that lets a shipyard order compatible parts and check that the water connection can be assembled and locked correctly.

What are the key requirements of SIST EN ISO 5620-2:2000?

SIST EN ISO 5620-2:2000 is mainly a component specification. The most important requirements are the defined dimensions, the stated materials and the designation format for each main part.

Flanges

Clauses 3, 4 and 5 specify the supply watering flange, ship watering flange and ship watering blind flange. Each flange has its own dimensional drawing in Figures 1 to 3, and each is to be made from steel to ISO 630, grade Fe 360 at minimum, or from ship-quality steel plate grade A if the mechanical and welding properties are equivalent.

In practice, this means the two sides of the connection and the blind cover must match mechanically and survive marine service. The designation form is:

• Flange ISO 5620-2 - A
• Flange ISO 5620-2 - B
• Flange ISO 5620-2 - C

Securing and fastening parts

Clause 6 specifies the securing bolt, with its dimensions shown in Figure 4 and its material required to be non-corrodible steel to ISO 683-1, grade H at minimum. Clause 8 specifies M16 stud-bolts of non-corrodible steel grade H, and allows alternative parts from ISO 4026, ISO 4016 or ISO 2341 in defined forms.

Clause 9 specifies M16 hexagon cap nuts of non-corrodible steel grade H, and allows ordinary hexagon nuts M16 if they are of the same material. In practice, these clauses keep the fastening set corrosion-resistant and interchangeable, which matters on exposed deck fittings and during maintenance.

Seal, lock and retention

Clause 7 specifies the gasket as a seawater-resistant elastomer suitable for drinking water, with dimensions in Figure 5. Clause 10 gives the padlock requirements, including approximate size, non-corrodible internal metal parts and an eye for the securing chain. Clause 11 specifies the securing chain as non-corrodible steel, with an S-shaped hook at one end and a securing ring at the other.

These parts matter because the joint must seal water cleanly, stay locked when not in use and resist corrosion in a marine environment. The designation forms are:

• Bolt ISO 5620-2 - D
• Gasket ISO 5620-2 - E

What terms does SIST EN ISO 5620-2:2000 define?

• Supply watering flange - The flange A connection on the supply side, used for piping or a hose line to the drinking water supply source.
• Ship watering flange - The flange B connection on the ship side of the filling arrangement.
• Ship watering blind flange - The flange C part used to close the filling connection when it is not in use.
• Securing bolt - The designated locking bolt, identified in the standard as code letter D.
• Gasket - The sealing element, identified as code letter E, made from seawater-resistant elastomer suitable for drinking water.
• Stud-bolts - The M16 fastening studs used in the watering flange assembly.
• Securing chain - The chain that links the securing bolt and padlock to retain the connection.

Who uses SIST EN ISO 5620-2:2000?

SIST EN ISO 5620-2:2000 is used in shipbuilding and marine structures work where drinking water needs to be transferred through a standardized connection. Typical users include ship designers, shipyards, marine equipment suppliers, maintenance teams and quality staff checking incoming parts.

It is also useful for buyers and procurement engineers who need to specify flanges, bolts, nuts, gasket material and locking accessories with clear part names and designations.

What changed in SIST EN ISO 5620-2:2000 from the previous edition?

SIST EN ISO 5620-2:2000 is the first edition of this part. The foreword says that this first edition, together with ISO 56204, cancels and replaces the first edition of ISO 5620 as a technical revision.

Which standards are used with SIST EN ISO 5620-2:2000?

• ISO 56204 - Provides the general requirements and the overall filling connection arrangement, including the flange letters used in this part.
• ISO 630 - Supplies the steel specification used as the minimum material for the flanges.
• ISO 683-1 - Supplies the non-corrodible steel grade H material requirement used for the securing bolt, stud-bolts and nuts.
• ISO 1302 - Gives the surface texture indication used on the drawings.
• ISO 2341 - Gives an alternative clevis pin for semi-finished product use.
• ISO 4016 - Gives an alternative hexagon head bolt option.
• ISO 4026 - Gives an alternative hexagon socket set screw option.

What does the SIST EN ISO 5620-2:2000 document contain?

The standard is mostly a set of component definitions supported by drawings. It contains dimensional figures for the supply watering flange, ship watering flange, ship watering blind flange, securing bolt and gasket, plus an example of a securing chain.

It also gives material rules, surface texture references, designation formats and alternative fastener options. That makes it useful for design, purchasing, fabrication and inspection of the drinking water filling connection on ships.

SLOVENSKI STANDARD
01-december-2000
Shipbuilding and marine structures - Filling connection for drinking water tanks -
Part 2: Components (ISO 5620-2:1992)
Shipbuilding and marine structures - Filling connection for drinking water tanks - Part 2:
Components (ISO 5620-2:1992)
Schiffbau und Meerestechnik - Übernahme-Flanschanschluß für Trinkwassertanks - Teil
2: Einzelteile (ISO 5620-2:1992)
Construction navale et structures maritimes - Raccordement de remplissage des
réservoirs a eau potable - Partie 2: Eléments constitutifs (ISO 5620-2:1992)
Ta slovenski standard je istoveten z: EN ISO 5620-2:1996
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
First edi tion
19924 2-01
Shipbuilding and marine structures - Filling
connedion for drinking water tanks -
Part 2:
Components
Construction navale et structures maritimes - Raccordement de
remplissage des reservoirs A eau potable -
Partie 2: N6ments constitutifs
Reference number
ISO 5620-2: 1992(E)
ISO 5620=2:1992(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. Esch 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, govern-
mental 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.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an Inter-
national Standard requires approval by at least 75 % of the member
bodies casting a vote.
International Standard ISO 5620-2 was prepared by Technical Committee
ISWTC 8, Shipbuilding and marine structures.
This first edition of ISO 5620-2 together with ISO 56204 cancel and re-
place ttre first edition of ISO 5620, of which they constitute a technical
revision.
ISO 5620 consists of the following Parts, under the general title
Shipbuilding and marine structures - Filling connection for drinking
water tanks:
- Part 1: General requirements
- Part 2: Components
0 ISO 1992
All rights reserved. No part of this publication may be reproduced or utilized in any form
or by any means, electronie or mechanical, including photocopying and microfilm, without
Permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ii
ISO 5620=2:1992(E)
INTERNATIONAL STANDARD
Shipbuilding and marine structures - Filling connection for
drinking water tanks -
Part 2:
Components
IEC and ISO maintain registers of currently valid In-
1 Scope
ternational Standards.
ISO 5620 specifies the drinking water connection
ISO 630:1980, Strucfural steels.
aboard ships for attachment of piping from another
ship or from a land distribution System.
ISO 683.1:1987, Heat-treatable steels, alloy steels
This part of ISO 5620 specifies the technical details and free-cutting steels - Part 1: Direct-hardening
of the components of the filling connection and lays unalloyed and Iow-alloyed wrought steel in form of
down the designation of the main components such different black produc ts.
as flanges, securing bolts and gasket.
ISO 1302:1992, Technical drawings - Method of in-
NOTE 1 Part 1 of ISO 5620 specifies the general re-
dicating surface texture.
quirements, the composition and the designation of the
complete filling connection.
ISO 2341:1986, Clevis pins with head.
ISO 4016:1988, Hexagon head bolts - Product grade
2 Normative references
C .
The following Standards contain provisions which,
ISO 4026:1977, Hexagon socket sef screws with f7at
through reference in this text, constitute provisions
of this patt of ISO 5620. At the time of publication, Point.
the editions indicated were valid. All Standards are
ISO 56204 :1992, Shipbuilding and marine sfructures
subject to revision, and Parties to agreements based
- Filiing connection for drinking water tanks -
on this patt of ISO 5620 are encouraged to investi-
Part 7: General requiremenfs.
gate the possibility of applying the most recent edi-
tions of the Standards indicated below. Members of

ISO 5620=2:1992(E)
Alternatively ship-quality steel plate grade A may
3 Supply watering flange
be used, provided that it has equivalent mechanical
and welding properties.
The s
...