Pneumatic Actuators for Valves

Transcription

1 p pproval roramms for U rcos orasato Mutual coto (M)No. 2.9 STANDARD FOR CERTIFICATION Approval Programmes Type Approval Programmes for EU recognised organisation Mutual Recognition (MR) No. MR-P007 Pneumatic Actuators for Valves JULY 2014 The electronic pdf version of this document found through is the officially binding version The content of this service document is the subject of intellectual property rights reserved by Det Norske Veritas AS (DNV). The user accepts that it is prohibited by anyone else but DNV and/or its licensees to offer and/or perform classification, certification and/or verification services, including the issuance of certificates and/or declarations of conformity, wholly or partly, on the basis of and/or pursuant to this document whether free of charge or chargeable, without DNV's prior written consent. DNV is not responsible for the consequences arising from any use of this document by others. DET NORSKE VERITAS AS

2 FOREWORD DNV is a global provider of knowledge for managing risk. Today, safe and responsible business conduct is both a license to operate and a competitive advantage. Our core competence is to identify, assess, and advise on risk management. From our leading position in certification, classification, verification, and training, we develop and apply standards and best practices. This helps our customers safely and responsibly improve their business performance. DNV is an independent organisation with dedicated risk professionals in more than 100 countries, with the purpose of safeguarding life, property and the environment. Standards for Certification Standards for Certification (previously Certification Notes) are publications that contain principles, acceptance criteria and practical information related to the Society's consideration of objects, personnel, organisations, services and operations. Standards for Certification also apply as the basis for the issue of certificates and/or declarations that may not necessarily be related to classification. Det Norske Veritas AS July 2014 Any comments may be sent by to rules@dnv.com This service document has been prepared based on available knowledge, technology and/or information at the time of issuance of this document, and is believed to reflect the best of contemporary technology. The use of this document by others than DNV is at the user's sole risk. DNV does not accept any liability or responsibility for loss or damages resulting from any use of this document.

3 Standard for Certification - No. 2.9, July 2014 Type Approval Programmes for EU recognised organisation Mutual Recognition (MR) No. MR-P007 CHANGES CURRENT Page 3 CHANGES CURRENT General This is a new document. Det Norske Veritas AS, company registration number , has on 27 th November 2013 changed its name to DNV GL AS. For further information, see Any reference in this document to Det Norske Veritas AS or DNV shall therefore also be a reference to DNV GL AS. DET NORSKE VERITAS AS

4 1. PRODUCT DESCRIPTION a General description of the product b Application limitations c Intended use d System context DESIGN EVALUATION a Engineering evaluation requirements a.i. Technical Requirements a.ii. Technical documents to be submitted b Type testing requirements PRODUCTION REQUIREMENTS MARKING REQUIREMENTS TYPE APPROVAL CERIFICATE CONTENT APPROVAL DATE AND REVISION NUMBER BACKGROUND INFORMATION / REFERENCES PRODUCT DESCRIPTION 1.a General description of the product A pneumatic actuator for valves is a component which directly converts air pressure into mechanical action, opening and closing the operated valve. 1.b Application limitations The technical requirement only applies to mass-produced pneumatic actuators having design pressure p 1 MPa and product p V 150 (V being the internal volume in dm 3 of the pressure vessel/cylinder). Pneumatic actuators shall not be used inside cargo tanks. 1.c Intended use Pneumatic actuators intended for remote and local operation of valves. 1.d System context Piping systems. Page 1 of 4

5 2. DESIGN EVALUATION 2.a Engineering evaluation requirements 2.a.i. Technical Requirements Materials: All parts of pneumatic actuators subject to internal pressure are to be of metallic materials; Grey cast iron is not to be used for pressure vessels with design pressure p > 0,7MPa; Where a specific standard is used for the design, the materials are to be selected among those allowed by that standard. Safety Valve: Piping systems where the pneumatic actuators are installed are to be provided with safety devices ensuring protection of pressure vessels in normal service. These safety devices are to be set at no more than the maximum working pressure of pneumatic actuators and sized to prevent the pressure from rising more than 10% above MAWP. Design: Pneumatic actuators are to be designed according to recognised standards for pneumatic actuators (e.g.: EN :2009) and/or pneumatic cylinders, in particular with regard to the safety factors for dimensioning of pressurised enclosures; All valve pneumatic actuators provided with remote control shall be designed to permit local manual operation of valve; The remote control system and means of local operation are to be independent. Opening and/or closing of the valve by local manual means is not to render the remote control system inoperable; Power failure of the remote control system is not to cause an undesired change of the valve position. Position indication: The actuator shall be equipped with a local indicator to clearly show if the valve is open or shut. Page 2 of 4

6 2.a.ii. Technical documents to be submitted (a) General arrangement plan including nozzles and fittings (b) Material specifications (including yield point, tensile strength, impact strength, heat treatment) (c) Welding details as applicable, including at least: Typical weld joint design; Welding procedure specifications; Post weld heat treatments. (d) Constructional details of all pressure parts, such as shells, headers, nozzles (e) Design data, including design pressure and temperature (f) Internal volume of the pressure vessel/cylinder (g) Maximum torque on the stem of the valve. 2.b Type testing requirements (a) Burst pressure test is to be carried out at 4 times the design pressure; (b) Functional test to be carried out both by remote control and local manual operation. 3. PRODUCTION REQUIREMENTS Refer to EU RO Product Quality Assurance (PQA)" procedure (Annex VI of EU RO Framework Document for the Mutual Recognition of Type Approval; Materials, including welding consumables, for the construction of parts of actuators subject to pressure are to be certified by the material manufacturer in accordance with the appropriate material specification A hydrostatic pressure test is to be carried out by the manufacturer at 1.5 times the design pressure Functional tests are to be carried out by both remote control and local manual operation. 4. MARKING REQUIREMENTS Manufacturers of the approved equipment are, in principle, to mark the product before shipment for identification of approved equipment and, in addition, at least the following items to be marked at the suitable place: (a) Manufacturer s name or equivalent (b) Type No. or symbol (c) Serial No. and date of manufacture Page 3 of 4

7 (d) Particulars or ratings. Each pneumatic actuator is to be fitted with a permanently attached plate made of non-corrosive metal, with indication of the following information, in addition to the identification marks (name of manufacturer, year and serial number): (a) Design pressure (b) Design temperature (optional) (c) Test pressure and the date of the test. 5. TYPE APPROVAL CERIFICATE CONTENT (a) Certificate number (b) Name and address of manufacturer (c) Issue date and validity of certificate / expiry date (d) Product description (e) Type / model name(s) (f) Technical specifications, ratings (g) List of approval documents (h) Rules / standards applied (i) Approval conditions including limitations, if any. 6. APPROVAL DATE AND REVISION NUMBER Date Revision Comment 31 January Accepted by EU RO MR Advisory Board 7. BACKGROUND INFORMATION / REFERENCES (a) EN :2009 (Industrial Valves - Actuators - Part 3: Pneumatic part-turn actuators for industrials valves - Basic requirements) (b) EU RO Framework Document for the Mutual Recognition of Type Approval. End of Document Page 4 of 4