ISO 11933-3:1998 封じ込めエンクロージャーのコンポーネント—パート3：プレーンドア、エアロックチャンバー、両開きドア移送システム、廃棄物ドラムの漏れのない接続などの移送システム | ページ 2

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.

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.

International Standard ISO 11933-3 was prepared by Technical Committee ISO/TC 85, Nuclear energy, Subcommittee SC 2, Radiation protection.

ISO 11933 consists of the following parts, under the general title Components for containment enclosures:

• Part 1: Glove/bag ports, bungs for glove/bag ports, enclosure rings and unterchangeable units
• Part 2: Gloves, welded bags, gaiters for remote-handling tongs and for manipulators
• Part 3: Transfer systems such as plain doors, airlock chambers, double doors for leaktight transfer, leaktight connections for waste drums
• Part 4: Ventilation and air cleaning systems, such as filters, traps, pressure regulators, safety and control devices
• Part 5: Penetration for electrical and fluid circuits

Annexes A and B of this part of ISO 11933 are for information only.

Introduction

A great number of components or systems used for achieving leaktight transfer functions in containment enclosures are presently offered on the market. These equipment or systems

• may have different geometrical dimensions;
• may differ by their design criteria;
• may require holes of different diameters to be installed on the containment enclosure wall;
• may be attached to the wall by different methods;
• may use different mounting techniques for their corresponding leaktightness.

These components or systems are generally not mutually compatible, but nevertheless often have the same performance level; therefore it was not possible to select only one system or component as the International Standard.

As a consequence, the aim of this part of ISO 11933 is to present general principles of design and operation, and to fully describe the most common systems or components in use in order to:

• avoid new parallel systems or components based on identical principles and differing only in details or geometric dimensions;
• make possible interchangeability between existing devices;
• demonstrate consistency among the various parts of the same system such as the basic elements (described in ISO 11933-1), the associated leaktight components (described in ISO 11993-2) or the transfer systems (described in this part of ISO 11933).

1 Scope

This part of ISO 11933 specifies the designations and characteristics of the various transfer systems which can be mounted on containment enclosures either used alone or placed behind a shielding wall.

These transfer systems may also be used directly on shielding walls made of metal (carbon steel or stainless steel) or of concrete.

The systems covered by this part of ISO 11933 are

• plain doors,
• airlock chambers,
• double door transfer systems,
• leaktight connections for waste drums.

Some of these systems, such as plain doors, airlock chambers or double door transfer systems can be used in addition to components defined in ISO 11933-1 or ISO 11933-2 (glove/bag ports, bungs for glove/bag ports, support rings, welded bags, etc.).

Large size doors and airlock chambers, used for personnel or large equipment, are not within the scope of this part of ISO 11933.

2 Normative references

The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 11933. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO 11933 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.

3 Definitions

For the purposes of this part of ISO 11933, the following definitions apply.

Annex B

Bibliography