Government Decree No. 20 / 2003 Coll.
Government Regulation laying down technical requirements for simple pressure vessels
Valid
Effective from 01.05.2004
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20
GOVERNMENT REGULATION
of 9 December 2002
laying down technical requirements for simple pressure vessels
The Government orders pursuant to Article 22 of Act No. 22 / 1997 Coll., on Technical Requirements for Products and on the Amendment and Addition of Certain Acts, as amended by Act No. 71 / 2000 Coll. and Act No. 205 / 2002 Coll., ("the Act ') to implement Sections 11 (2), 11a (2) (c), 12 (1) and (3) and 13 (2) of the Act:
Basic provisions
(1) This Regulation lays down technical requirements for simple pressure vessels in accordance with European Community law (1).
(2) For the purposes of this Regulation, a single pressure vessel (hereinafter referred to as the "container ') shall be considered as a single pressure vessel, each welded vessel exposed to internal pressure greater than 0,5 bar, intended for the collection of air or nitrogen, which is not exposed to flame and whose parts and assemblies having an impact on strength are made either of non-alloy stainless steel, of non-alloy aluminium or of unhardened aluminium alloys. It is either made of a cylindrical part of a circular cross-section closed on the outside by arched or flat days coupled with a cylindrical part or of two arched arched days. Its maximum working pressure is not more than 30 bar and the product of this pressure and volume of the container (hereinafter referred to as" PS.V') is not more than 10,000 bar.L and the lowest working temperature is not less than -50 ° C and the maximum working temperature is not more than 300 ° C for steel containers and for aluminium or aluminium alloy containers is not more than 100 ° C.
(3) This Regulation shall not apply to:
(a) containers specially designed for nuclear purposes, the failure of which may cause the leakage of radioactivity;
(b) containers specially designed to be placed on and operated by vessels and aircraft;
(c) fire extinguishers.
(4) The specified products under this Regulation are, within the meaning of Section 12 (1) (a) of the Act, containers manufactured in series.
Conditions for placing on the market and putting into service
(1) Containers may be placed on the market and put into service only if they do not endanger the safety of persons, domestic animals or property when properly installed and maintained and used for the intended purpose.
(2) Containers the product of which exceeds 50 bar.L shall comply with the technical requirements set out in Annex 1 to this Regulation (hereinafter referred to as "essential requirements").
(3) Containers whose product PS.V is 50 bar.L or less must be manufactured in accordance with the good technical practice of a Member State of the European Union and must be labelled as specified in point 1 of Annex 2 to this Regulation, except for the CE marking.
(4) The essential requirements shall be deemed to be met if the containers comply with the safety requirements of harmonised Czech technical standards or, where applicable, foreign technical standards transposing harmonised European standards in the Member States of the European Union (§ 4a of the Act).
Conformity assessment procedures
(1) The manufacturer or his authorised representative is responsible for assessing the conformity of containers (Section 12 (4) of the Act) for which the product of PS is made. In more than 50 bar.L, before the start of the production of containers, the procedures referred to in paragraph 2 and during the production process of the vessels shall be those referred to in paragraph 3.
(2) Prior to production of containers
(a) manufactured in accordance with the technical standards referred to in Article 2 (4), the manufacturer or his authorised representative shall, at his choice:
1. in the case of a notified person (2), the examination of the construction and production materials referred to in point 3 of Annex 2 to this Regulation; the notified person issues a certificate of adequacy for this dossier; or
2. EC examination of the type of container according to § 4,
(b) which are not fully manufactured in accordance with the technical standards referred to in Article 2 (4), the manufacturer or his authorised representative shall ensure that the EC type-examination of the container is carried out in accordance with Article 4.
(3) Containers manufactured in accordance with the technical standards referred to in Section 2 (4) or approved prototype shall be submitted before placing on the market:
(a) EC verification pursuant to Section 5, where the product of the PS.V is greater than 3000 bar.L; or
(b) at the choice of the manufacturer where the product of the PS. V not greater than 3000 bar.L but greater than 50 bar.L, submitted
1. EC verification according to § 5, or
2. EC declaration of conformity pursuant to § 6.
(4) Records and correspondence relating to conformity assessment procedures shall be drawn up in the language of the Member State in which the notified person is established or in the language accepted by that person.
EC type-examination
(1) EC type-examination is a procedure whereby the notified person ascertains and confirms that the prototype vessel complies with the provisions of this Regulation which apply to it.
(2) The application for EC type-examination for a prototype of a container or for a prototype representing a group of containers shall be submitted by the manufacturer or his authorised representative to a single notified person. The application shall be accompanied by a container representing the production envisaged. The application shall contain:
(a) identification details of the manufacturer or his authorised representative (for a natural person, the name and surname and permanent residence or place of business, the name or business name and registered office of the legal person) and the place of manufacture of the containers; and
(c) the design and production documents referred to in point 3 of Annex 2 to this Regulation.
(3) The notified person shall verify the design and production documentation for verification of conformity and the container submitted during the EC type-examination. When checking the vessel, the notified person
(a) verify that the container has been manufactured in accordance with design and production documents and can be safely used under the working conditions under consideration;
(b) carry out tests and tests to verify that the container complies with the essential requirements applicable to it.
(4) Where the prototype of the vessels complies with the provisions applicable to it, the notified person shall issue the applicant with an EC-type examination certificate containing the conclusions of the tests, any conditions to which its validity may be bound and the descriptions and drawings necessary for the identification of the certified type.
(5) The Commission of the European Communities, the other relevant notifiers and foreign notifiers and the competent authorities of the Member States of the European Union may obtain a copy of the EC-type examination certificate and, at the reasoned request, copies of the design and production documentation and reports of examinations and tests carried out.
(6) A person who refuses to issue an EC type-examination certificate shall inform the other relevant notified persons and foreign notifiers. The Notified Person who cancels the EC type-examination certificate shall inform the Technical Standardisation, Metrology and State Testing Office (hereinafter "the Office ') accordingly.
EC verification
(1) EC verification is a procedure whereby the manufacturer or his authorised representative ensures and declares that containers which are tested in accordance with paragraph 3 are in conformity with:
(a) the design and production documents referred to in point 3 of Annex 2 to this Regulation for which a certificate has been issued pursuant to Article 3 (2) (a) (1); or
(b) the certified type described in the EC type-examination certificate.
(2) The manufacturer shall take all necessary measures to ensure conformity of the containers with the type described in the EC type-examination certificate or in the design and production documentation referred to in point 3 of Annex 2 to this Regulation in the manufacture.
(3) The notified person shall carry out the findings and tests to assess compliance with the requirements of this Regulation. To that end,
(a) the manufacturer submits to the notified person the container in the form of individual homogeneous production doses produced at a certain time interval under the same conditions, the measures in the production process ensuring the homogeneity of the containers in each production dose;
(b) these production doses shall be accompanied by an EC type-examination certificate or, where the containers are not manufactured in accordance with the certified type, the design and production documents referred to in point 3 of Annex 2 to this Regulation; Before EC verification, the notified person shall verify this documentation for certification of its adequacy,
(c) the notified person checks the production batch to determine whether the vessels have been manufactured and checked according to the construction and production documents; Further perform a hydraulic or pneumatic test on each container of the production batch by pressure Ph equal to 1,5 times the calculation pressure to verify its tightness; when carrying out the pneumatic test, the notified persons shall proceed in a manner consistent with the conditions for compliance with the uniform procedure laid down in Article 11 of the Act; for checking the quality of welds, the notified person shall carry out tests on test samples taken at the choice of the manufacturer from a representative test sample from production or from a container; tests shall be carried out on longitudinal welds, and if the welding methods used for longitudinal and circumferential welds differ, the tests shall also be carried out on circumferential welds; for containers covered by point 2.1.2 of Annex 1 to this Regulation, these tests on test samples shall be replaced by a hydraulic test on five containers selected randomly from each batch to determine whether they comply with the requirements of point 2.1.2 of Annex 1 to this Regulation;
(d) the notified person shall attach or have the CE marking and his identification number affixed to each individual container of the production batch, if the batch complies with the requirements of (c) and issue a certificate of conformity concerning the tests carried out; the manufacturer may, with the agreement of the notified person, mark each container of the batch already during the production process and all containers of the batch may be placed on the market except those which have failed the hydraulic or pneumatic test;
(e) where the levy is refused, the notified person shall take appropriate measures to prevent the placing on the market of that production levy; in the case of frequent refusal of doses, the notified person may suspend statistical verification of doses; the manufacturer may, under the responsibility of the notified person, attach the identification number of that notified person during the production process;
(f) the manufacturer or his authorised representative shall, on request, submit certificates of conformity issued by the notified person in accordance with point (d).
EC declaration of conformity
(1) EC declaration of conformity is a procedure whereby, after complying with the requirements of paragraph 2, the manufacturer shall affix the CE marking to the vessels on which he or she declares that they are in conformity with:
(a) the design and production documents referred to in point 3 of Annex 2 to this Regulation for which a certificate has been issued pursuant to Article 3 (2) (a) (1); or
(b) a certified type.
(2) Prior to the start of production, the manufacturer shall submit to the notified person who has issued the EC type-examination certificate or the certificate referred to in Article 3 (2) (a) (1), supporting documents containing a description of the production processes and any pre-established system measures to ensure compliance of pressure vessels with the technical standards referred to in Article 2 (4) or the certified type. These documents shall include:
(a) a description of the manufacturing and testing equipment used in the manufacture of containers;
(b) test reports describing the checks and tests carried out during manufacture, together with the relevant procedures and frequency of their implementation;
(c) an undertaking to carry out checks and tests in accordance with the test protocol for carrying out a hydraulic or pneumatic pressure test on each container manufactured by a test pressure equal to 1,5 times the calculation pressure; checks and tests shall be carried out by qualified personnel who are sufficiently independent of the personnel in production and a report shall be drawn up on the checks and tests;
(d) the addresses of the manufacturing and storage sites and the date of the start of production.
(3) If the containers are not manufactured in accordance with the approved type, the notified person who has issued the EC type-examination certificate or the certificate referred to in Article 3 (2) (a) (1) shall, before the start of manufacture, examine the supporting documents referred to in paragraph 2 and the design and production documents referred to in point 3 of Annex 2 to this Regulation, whether they are fit to comply with the essential requirements of the container manufactured under them.
Supervision
(1) If the vessel is the product of PS. In more than 200 bar.L, their production is subject to the supervision of a notified person. Surveillance shall be carried out during the production process by the notified person who issued the EC type-examination certificate or, where appropriate, by the notified person who issued the certificate pursuant to Article 3 (2) (a) (1).
(2) Noticed person under supervision
(a) determine whether the manufacturer checks the mass-produced vessels in accordance with Article 6 (2) (c); and
(b) take random samples of containers for control purposes at the place of manufacture or at the place of storage of the containers.
(3) The manufacturer shall allow the notified person, for supervisory purposes, access to the manufacturing and storage sites of the containers, allow him to select samples of the containers and provide all necessary information, in particular:
(a) design and production documents;
(b) control procedures;
(c) the EC type-examination certificate or the certificate referred to in Article 3 (2) (a) (1); and
(d) a report of the manufacturer's inspections and tests.
(4) The person nominated shall send a copy of the surveillance report to the Authority and, on request, to other relevant notified and foreign notifiers, representatives of the Member States of the European Union and the Commission of the European Communities.
CE marking and other marking
(1) The CE marking, the graphic form of which is laid down in a specific legislation, (3) and the inscriptions referred to in point 1 of Annex No 2 to this Regulation, shall be placed on a container or on a production label which cannot be separated from the container in such a way that it is visible, easily legible and indelible. The CE marking shall be accompanied by an identification number assigned to the notified person responsible for EC verification or supervision.
(2) A marking other than the CE marking may be affixed to the container or to the production plate, but this shall not reduce the visibility and, where appropriate, the legibility of the CE marking. The container shall not bear a marking which could mislead anyone with regard to the CE marking.
(3) The CE marking on the container indicates that the product complies with the technical requirements laid down in all the legislation applicable to it and which provides for or allows that marking and that the procedure laid down in that Directive has been followed when assessing its conformity. However, if one or more laws allow the manufacturer, for a transitional period, to choose which provisions he will follow, the CE marking shall indicate compliance only with those laws or their provisions used by the manufacturer. In this case, the documentation, warnings or instructions required by the legislation concerned and annexed to the products concerned shall indicate the relevant legislation of the European Communities or their provisions applied by the manufacturer.
(4) Containers for which the manufacturer has not used or only partially applied the technical standards referred to in Article 2 (4) or for which no such technical standards exist shall be considered as meeting the essential requirements where, after obtaining the EC type-examination certificate, their conformity with the certified type has been confirmed by the affixing of the CE marking.
Notice of the imposition of safeguard measures
Where a protective measure has been imposed on vessels under a special legislation, 4) in the notification of the decision imposing the protective measure, it shall be indicated whether the non-compliance was caused by:
(a) failure to meet the essential requirements if the container does not comply with the technical standards referred to in Article 2 (4);
(b) incorrect application of the technical standards referred to in Article 2 (4); or
(c) shortcomings in the technical standards referred to in Article 2 (4).
Authorisation conditions
(1) The conditions set out in Annex 3 to this Regulation shall apply to the authorisation of legal persons under Paragraph 11 (2) of the Act.
(2) The authorised person becomes a notified person in accordance with the procedure laid down in Article 11 (7) of the Act.
Transitional and final provisions
(1) Valid certificates or other documents issued on the basis of Government Decree No. 175 / 1997 Coll., as amended by Government Decree No. 80 / 1999 Coll. and Government Decree No. 285 / 2000 Coll., may be used for the purposes of conformity assessment under this Regulation unless they are repealed under the conditions laid down by law.
(2) Persons in charge of conformity assessment activities pursuant to Government Regulation No 175 / 1997 Coll., as amended by Government Regulation No 80 / 1999 Coll. and Government Regulation No 285 / 2000 Coll., shall be deemed to be persons in charge of activities under this Regulation.
The following shall be deleted:
1. Government Decree No. 175 / 1997 Coll., laying down technical requirements for simple pressure vessels.
2. Government Decree No. 80 / 1999 Coll., amending Government Decree No. 175 / 1997 Coll., laying down technical requirements for simple pressure vessels.
3. Decree No. 285 / 2000 Coll., amending Decree No. 175 / 1997 Coll., laying down technical requirements for simple pressure vessels, as amended by Decree No. 80 / 1999 Coll.
Efficacy
This Government Regulation shall enter into force on the date of the entry into force of the Treaty of Accession of the Czech Republic to the European Union.
Prime Minister:
PhDr. Špidla v. r.
Minister for Industry and Trade:
Ing. Rusnok v. r.
Příloha č. 1
Annex No. 1 to Government Decree No. 20 / 2003 Coll.
ESSENTIAL REQUIREMENTS
1. Materials
The materials shall be selected according to the intended purpose of using the containers and in accordance with points 1.1 to 1.4.
1.1. Pressure parts
The materials referred to in point 1 used for the production of pressure components shall be:
(a) suitable for welding;
(b) malleable and tenacious in such a way that the material breach at the lowest working temperature does not result in a fragmented or fragile refraction;
(c) ageing resistant.
In addition, for steel containers, the materials shall comply with the requirements set out in 1.1.1. and for aluminium or aluminium alloy containers with the requirements of 1.1.2. The materials shall be supported by a metallurgical certificate from the material manufacturer as set out in Annex 2 to this Regulation.
1.1.1. Steel containers
The steel used shall meet the following requirements:
(a) they must not be uncalmed and must be delivered in a state of normally annealed or comparable condition;
(b) the carbon content of the product must be less than 0,25% and the sulphur and phosphorus content must be less than 0,05% for each individual element;
(c) they must have the following mechanical characteristics for each product:
(ca) the maximum tensile strength Rm, max shall be less than 580 N.mm-2;
(cb) the tensile strength shall be as follows:
(1) if the test samples are taken parallel to the rolling direction:
with a thickness equal to or greater than 3 mm: A equal to or greater than 22%;
for a thickness of less than 3 mm: A80 mm equal to or greater than 17%,
(2) if the test samples are taken perpendicular to the direction of rolling:
with a thickness equal to or greater than 3 mm: A equal to or greater than 20%;
for a thickness of less than 3 mm: A80 mm equal to or greater than 15%,
(cc) the mean value of KCV in three samples at the lowest working temperature shall not be less than 35 J.cm-2 Maximum one of three values may be less than 35 J.cm-2 but not less than 25 J.cm-2 In the case of steels used for the manufacture of containers whose lowest working temperature is less than -10 ° C and whose wall thickness is more than 5 mm, this property shall be checked.
1.1.2. Aluminium containers
Unalloyed aluminium shall have an aluminium content of at least 99,5% and an unhardened aluminium alloy shall have sufficient resistance to intercrystal corrosion at the highest working temperature.
In addition, these materials shall comply with the following requirements:
(a) they must be delivered in an annealed state; and
(b) each semi-finished product shall show the following mechanical values:
1. maximum value of tensile strength Rm, max shall not exceed 350 N.mm-2
2. the traction shall have the following values:
A greater than or equal to 16% if the test sample is taken in the direction of rolling,
A greater than or equal to 14% if the test sample is taken perpendicular to the direction of rolling.
1.2. Additional materials for welding
Additional materials which are used for the production of welding connections of vessels or on containers shall be suitable for and compatible with welded materials.
1.3. Accessories affecting container strength
These parts (for example, screws and nuts) shall be made from the material referred to in point 1.1 or from other suitable types of steel, aluminium or aluminium alloys which are compatible with the materials used for the production of pressure components.
These materials shall have adequate elasticity and tenacity at the lowest working temperature.
1.4. Non-pressure parts
All non-pressurised parts of welded containers shall be made of materials compatible with the materials of the components to which they are to be welded.
2. Design of containers
When designing the container, the manufacturer shall be:
(a) determined according to the purpose of using the following value:
1. the lowest working temperature of Tmin,
2. maximum working temperature Tmax,
3. maximum working pressure PS.
If the selected lowest working temperature is higher than -10 ° C, the required material properties shall be guaranteed for -10 ° C,
(b) the following requirements are also taken into account:
1. it must be possible to carry out an internal surface check;
2. it shall be possible to empty the vessels;
3. the mechanical characteristics must be maintained throughout the specified life of the container when used for the purpose;
4. the containers must be adequately protected against corrosion, taking into account their prescribed use;
(c) account taken of the fact that under the intended conditions of use:
1. the containers will not be exposed to a voltage which could jeopardise their safety during use,
2. the internal pressure will not continuously exceed the maximum working pressure PS, but may be temporarily exceeded by up to 10%.
Circular and longitudinal welds shall be made of fully welded welds or welds equivalent. The gilt bottom, with the exception of semi-spherical days, shall have a cylindrical hem.
2.1. Wall thickness
If product PS. V is not greater than 3000 bar.L, the manufacturer chooses one of the methods described in paragraphs 2.1.1 and 2.1.2 for determining the thickness of the container wall; if the product of PS is. In more than 3000 bar.L, or if the maximum working temperature is greater than 100 ° C, this thickness shall be determined by the method described in paragraph 2.1.1.
However, the actual wall thickness of the cylindrical part and the day of steel containers shall not be less than 2 mm and shall not be less than 3 mm for aluminium and aluminium alloy containers.
2.1.1. Calculation method
The minimum thickness of the pressure components shall be calculated taking into account the size of the following loads and conditions:
(a) the calculated calculation pressure shall not be less than the highest working pressure chosen;
(b) the total permissible membrane voltage may not exceed the lower of 0,6 RET and 0,3 Rm. In order to determine the permissible voltage, the manufacturer shall use the smallest RET and Rm values, min guaranteed by the material manufacturer.
However, if the cylindrical part of the container has one or more longitudinal welds made by means other than an automatic device, the thickness calculated by the above method shall be multiplied by 1,15.
2.1.2. Experimental method
The wall thickness shall be determined in such a way that the containers at ambient temperature are resistant to pressure equivalent to at least five times the maximum working pressure, with a permanent perimeter deformation not exceeding 1 per cent.
3. Production
The containers shall be manufactured and subjected to production checks in accordance with the design and production documents referred to in point 3 of Annex 2 to this Regulation.
3.1. Production of components
In the manufacture of components (for example by forming or fencing), surface defects or cracks or changes in mechanical properties likely to affect the safety of containers shall not occur.
3.2. Welding on pressure parts
The characteristics of welds and adjacent areas shall be similar to those of welded materials and shall be free of surface or internal defects which could affect the safety of the vessels.
The welds shall be made by qualified welders or workers with adequate competence for the chosen welding method. Approval and qualification tests shall be carried out by notified persons.
During production, the continuous quality of welds shall also be ensured by carrying out appropriate tests corresponding to the welding method used. A report shall be drawn up on these tests.
4. The instructions drawn up in accordance with point 2 of Annex 2 to this Regulation shall be supplied with the container.
Příloha č. 2
Annex No. 2 to Government Decree No. 20 / 2003 Coll.
CE MARKING AND DESCRIPTION, INSTRUCTIONS ON USE, CONSTRUCTION AND PRODUCTION BASED, DEFINITIONS AND SYMBOLS
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Regulation Information
| Citation | Government Decree No. 20 / 2003 Coll., laying down technical requirements for simple pressure vessels |
|---|---|
| Regulation Type | - |
| Author | - |
| Collection | Code of Laws |
| Date of Promulgation | 11.02.2003 |
|---|---|
| Effective from | 01.05.2004 |
| Effective until | - |
| Status | Valid |
The regulation text is for informational purposes only.
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