SIST EN 12416-1:2001+A2:2007
(Main)Fixed firefighting systems - Powder systems - Part 1: Requirements and test methods for components
Fixed firefighting systems - Powder systems - Part 1: Requirements and test methods for components
This European Standard specifies requirements and test methods for materials, construction and performance of components intended for use in powder firefighting systems complying with prEN 12416-2:2000. The components covered are as follows; - powder containers;expellant gas container assemblies;pressure regulators and gauges; - actuators; - main isolating valves and selector valves; - nozzles. The components are suitable for powder firefighting systems for general use in buildings and other construction works. In areas with a risk of explosion, earthquake zones, extreme environmental conditions e.g. marine, offshore, mining or aircraft additional considerations apply.
Ortsfeste Brandbekämpfungsanlagen - Pulverlöschanlagen - Teil 1: Anforderungen und Prüfverfahren für Bauteile
Anwendungsbereich
Die Europäische Norm legt Anforderungen und Prüfverfahren für Werkstoffe, Konstruktion und Leis-tungsmerkmale
von Bauteilen fest, die für die Anwendung in Pulverlöschanlagen nach
EN 12416-2:2001 bestimmt sind.
Folgende Bauteile werden beschrieben:
- Pulverbehälter,
- Treibgasbehältergruppen,
- Druckregler,
- Auslöseeinrichtungen,
- Hauptabsperr- und Bereichsventile,
- Düsen.
Die Bauteile sind für Pulverlöschanlagen für die allgemeine Verwendung in Gebäuden und sonstigen
Bauwerken geeignet. Beim Einsatz in explosionsgefährdeten Bereichen, Erdbebengebieten oder unter
extremen Umweltbedingungen, wie in der Seefahrt, auf Bohrinseln, im Bergbau oder in der Luftfahrt
können weitere Anforderungen gelten.
Diese Norm behandelt Bauteile für die Anwendung in Pulverlöschanlagen nach EN 12416-2:2001. In
der vorliegenden Norm werden z. B. Rohre und Fittings nicht behandelt, die in anderen allgemeinen
Normen beschrieben sind und für die Anforderungen und Empfehlungen in EN 12416-2:2001 gegeben
werden. Außerdem werden weder Brandmelder noch Brandmelderzentralen behandelt.
Installations fixes de lutte contre l'incendie - Systemes d'extinction a poudre - Partie 1: Exigences et méthodes d'essais des éléments constitutifs
La présente norme européenne spécifie les exigences et les méthodes d'essai s'appliquant aux matériaux, a la construction et aux performances des éléments destinés a un usage au sein d'installations de lutte contre l'incendie utilisant la poudre conformes au prEN 12416-2:2000.
Les éléments faisant l'objet de la présente norme sont les suivants :
réservoirs de poudre ;
systemes de réserve du gaz propulseur ;
régulateurs de pression ;
systemes de déclenchement ;
vannes d'isolation principales et vannes directionnelles ;
diffuseurs.
Ces éléments sont adaptés aux installations de lutte contre l'incendie d'usage général utilisant la poudre, situées dans les immeubles et autres ouvrages de construction. Les surfaces ou existent des risques d'explosion, ainsi que les zones de tremblement de terre ou celles dans lesquelles regnent des conditions d'environnement extremes, telles les zones marines, de grand large, minieres ou aériennes, peuvent faire l'objet de dispositions complémentaires.
La présente norme s'applique aux éléments destinés a un usage au sein de systemes d'extinction a poudre conformes au prEN 12416-2:2000. Elle ne s'applique pas, par exemple, aux tuyaux et raccords faisant l'objet de normes plus générales, dont les exigences et recommandations sont indiquées dans le prEN 12416-2:2000. Par ailleurs, elle ne s'applique pas aux détecteurs ni aux équipements électriques de commande ou d'indication.
Vgrajeni gasilni sistemi - Sistemi s praškom - 1. del: Zahteve in prekusne metode za sestavne dele
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Vgrajeni gasilni sistemi - Sistemi s praškom - 1. del: Zahteve in prekusne metode za sestavne deleOrtsfeste Brandbekämpfungsanlagen - Pulverlöschanlagen - Teil 1: Anforderungen und Prüfverfahren für BauteileInstallations fixes de lutte contre l'incendie - Systemes d'extinction a poudre - Partie 1: Exigences et méthodes d'essais des éléments constitutifsFixed firefighting systems - Powder systems - Part 1: Requirements and test methods for components13.220.10Gašenje požaraFire-fightingICS:Ta slovenski standard je istoveten z:EN 12416-1:2001+A2:2007SIST EN 12416-1:2001+A2:2007en,fr01-december-2007SIST EN 12416-1:2001+A2:2007SLOVENSKI
STANDARD
SIST EN 12416-1:2001+A2:2007
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12416-1:2001+A2
June 2007 ICS 13.220.20 Supersedes EN 12416-1:2001English Version
Fixed firefighting systems - Powder systems - Part 1: Requirements and test methods for components
Installations fixes de lutte contre l'incendie - Systèmes d'extinction à poudre - Partie 1: Exigences et méthodes d'essais des éléments constitutifs
Ortsfeste Brandbekämpfungsanlagen -Pulverlöschanlagen - Teil 1: Anforderungen und Prüfverfahren für Bauteile This European Standard was approved by CEN on 18 January 2001 and includes Amendment 1 approved by CEN on 17 March 2004, and Amendment 2 approved by CEN on 16 May 2007.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12416-1:2001+A2:2007: ESIST EN 12416-1:2001+A2:2007
EN 12416-1:2001+A2:2007 (E)
2 Contents page Foreword.3 Introduction.3 1
Scope.4 2
Normative references.4 3
Terms and definitions.5 4 General requirements for components.7 5
Powder container.7 6
Expellant gas container assembly.8 7
Pressure gauges.9 8
Pressure regulators.9 9
Actuators.10 10
Main isolating valve and selector valve.11 11
Nozzles.12 12
Documentation.13 13
Marking.14 14
Type test methods.15 15
Evaluation of conformity.17 Annex A (normative) #Compliance test$.18 Annex B (normative) Internal pressure test.18 Annex C (normative) Operating force and function test.18 Annex D (normative) #Determination of the remaining media in the container after discharge.20 Annex E (normative) Opening and closing times.20 Annex F (normative) Low temperature test for actuators and valves.20 Annex G (normative) High temperature test.21 Annex H (normative) Vibration test.21 Annex I (normative) Reliability test.22 Annex J (normative) Salt spray corrosion test.22 Annex K (normative) Stress corrosion test.22 Annex L (normative) Strength test for pressure regulators, main isolating valves and selector valves.23 Annex M (normative) Jet velocity test.23 Annex N (normative) Flow rate test.24 SIST EN 12416-1:2001+A2:2007
EN 12416-1:2001+A2:2007 (E)
3 Foreword
This document (EN 12416-1:2001+A2:2007) has been prepared by Technical Committee CEN/TC 191 "Fixed firefighting systems", the secretariat of which is held by BSI.
This document shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2007 and conflicting national standards shall be withdrawn at the latest by December 2007.
This document includes Amendment 1 approved by CEN on 2004-03-17 and Amendment 2 approved by CEN on 2007-05-16.
This document supersedes EN 12416-1:2001.
The start and finish of text introduced or altered by amendment is indicated in the text by tags ! " and #$.
#deleted text$
This European Standard has the general title "Fixed firefighting systems - Powder systems" and consists of the following two parts:
Part 1 : Requirements and test methods for components Part 2 : Design, construction and maintenance
Annex A to annex N are normative annexes.
This European Standard is included in a series of European Standards planned to cover also:
a) gas extinguishing systems (EN 12094); b) sprinkler systems (EN 12259 and EN 12845); c) smoke control systems (EN 12101); d) explosion protection systems (EN 26184); e) foam systems (EN 13565); #f) hose systems (EN 671); g) water spray systems (EN 14816).$
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Introduction
It has been assumed in the preparation of this standard that the execution of its provisions is entrusted to appropriately qualified and experienced people.
SIST EN 12416-1:2001+A2:2007
EN 12416-1:2001+A2:2007 (E)
4 1
Scope
This European Standard specifies requirements and test methods for materials, construction and performance of components intended for use in powder firefighting systems complying with prEN 12416-2:2000.
The components covered are as follows:
- powder containers - expellant gas container assemblies - pressure regulators and gauges - actuators - main isolating valves and selector valves - nozzles.
The components are suitable for powder firefighting systems for general use in buildings and other construction works. In areas with a risk of explosion, earthquake zones, extreme environmental conditions e.g. marine, offshore, mining or aircraft additional considerations apply.
This standard covers components for use in powder extinguishing systems complying with prEN 12416-2:2000. It does not cover, for example, pipes and fittings which are covered by more general standards for which requirements and recommendations are given in prEN 12416-2:2000. Nor does it cover fire detectors or electrical control and indicating equipment.
2
Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited in the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications, apply to this European standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments).
EN 2, Classification of fires
EN 286-1:1998, Simple unfired pressure vessels designed to contain air or nitrogen - Part 1: Pressure vessels for general purposes
EN 615, Fire protection - Fire extinguishing media - Specifications for powders (other than class D powders)
#deleted text$
EN 1964-1, Transportable gas cylinders - Specification for the design and construction of refillable transportable seamless steel gas cylinders of water capacities from 0,5 litre up to and including 150 litres - Part 1: Cylinders made of seamless steel with an Rm value of less than 1100MPa
!EN 1964-2", Transportable gas cylinders - Specification for the design and construction of refillable transportable seamless steel gas cylinders from 0,5 litre up to and including 150 litres - Part 2: Tensile strength (Rm max.) ∃ 1100 N/mm2
EN 1964-3, Transportable gas cylinders - Specification for the design and construction of refillable transportable seamless steel gas cylinders of water capacities from 0,5 litre up to and including 150 litres - Part 3: Cylinders made of seamless stainless steel with an Rm value of less than 1100MPa
#EN 12094-4, Fixed firefighting systems - Components for gas extinguishing systems - Part 4: Requirements and test methods for container valve assemblies and their actuators$
#EN 12094-5, Fixed firefighting systems - Components for gas extinguishing systems - Part 5: Requirements and test methods for high and low pressure selector valves and their actuators$
EN 12094-8, #Fixed firefighting systems - Components for gas extinguishing systems - Part 8: Requirements and test methods for connectors$
#EN 12094-13$, Fixed firefighting systems - Components for gas extinguishing systems - Part 13: Requirements and test methods for check valves and non-return valves SIST EN 12416-1:2001+A2:2007
EN 12416-1:2001+A2:2007 (E)
5
#EN 60068-2-6$, Environmental testing - Part 2: Tests - Test Fc: Vibration (sinusoidal)
(IEC 60068-2-6:1995 + Corrigendum 1995)
#EN 60529$, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)
I#EN ISO 4126-1, Safety devices for protection against excessive pressure - Part 1: Safety valves (ISO 4126-1:2004)
EN ISO 4126-2, Safety devices for protection against excessive pressure - Part 2: Bursting disc safety devices (ISO 4126-2:2003)
#EN ISO 10297, Transportable gas cylinders - Cylinder valves - Specification and type testing (ISO 10297:2006)$
ISO 3864-1, Graphical symbols - Safety colours and safety signs - Part 1: Design principles for safety signs in workplaces and public areas$
3
Terms and definitions
For the purposes of this European Standard the following terms and definitions apply:
3.1 actuator component which when receiving a signal operates another component
3.2 bursting disc diaphragm designed to burst at a predetermined pressure difference
3.3 calculation zone zone for which the design quantity of the extinguishing media required is calculated separately
3.4 diptube (of the powder container) tube through which powder from the lower part of the container is transported into the piping
3.5 equipment fire fire of three dimensional objects, also subject to leakage, dripping or splashing
3.6 expellant gas container high pressure container to store the expellant gas
3.7 expellant gas container valve valve which retains the expellant gas in the expellant gas container, and which releases it when actuated
3.8 fill ratio (of the expellant gas container) mass of an expellant gas relative to the net capacity of the expellant gas container, expressed in kilograms per litre (kg/l)
3.9 flooding zone zone comprising all calculation zones to be flooded simultaneously with the extinguishing media via one selector valve
3.10 local application system system to protect separate objects SIST EN 12416-1:2001+A2:2007
EN 12416-1:2001+A2:2007 (E)
6
3.11 maximum working pressure pressure (at a temperature of 50 °C) at which the system or the component can still work and may be operated
3.12 minimum release energy energy which is needed for the operation of a component
3.13 minimum working pressure pressure (at a temperature of - 20 °C) at which the system or the component can still be operated
3.14 non-return valve component permitting flow only in one direction
3.15 nozzle component to achieve determined performance characteristics and a uniform distribution into or at a protected zone
3.16 pilot container power source for a pneumatic alarm device and for actuation of the expellant gas container
3.17 (extinguishing) powder extinguishing medium composed of finely divided solid chemical products consisting of one or more principle components, which are combined with additives to improve its characteristics [EN 615]
NOTE 1
In North America and some other countries, the term "dry powder" is used to denote special metal fire extinguishing agents and the term "dry chemical extinguishing agent" is used to denote the extinguishing medium specified in this European Standard.
NOTE 2
When it is useful to indicate the class of fire for which a powder is designed, capital letters may be added before the term. The letters used in this European Standard are those defined in EN 2.
EXAMPLE
BC powder is designed to extinguish class B (liquids or liquefied solids) and class C (gases) fires; ABC powder is designed to extinguish class A (solids which form glowing members), class B and class C fires.
3.18 protected zone the entire number of flooding zones protected by one system
3.19 selector valve component which opens or prevents the flow of extinguishing media into a flooding zone
3.20 surface fire fire spreading across horizontal surfaces. A surface fire may be a fire involving flammable liquids, gases or solids, not subjected to smouldering
3.21 total flooding system system to protect the entire contents of an enclosed space
3.22 working pressure pressure at which the component is used in the system
SIST EN 12416-1:2001+A2:2007
EN 12416-1:2001+A2:2007 (E)
7 3.23 working temperature range temperature range at which the system or the component can still work and may be operated
4 General requirements for components
4.1 Working temperature range
The components shall have a working temperature range of - 20 °C to + 50 °C.
If CO2 pilot containers or CO2 expellant gas containers are used the working temperature range shall be 0 °C to 40 °C.
4.2 General test facilities
It shall be ensured that the function of all actuators can be tested without discharging the expellant gas. Depending on the type of the system test connectors for an external test cylinder shall be available.
4.3
Stress corrosion test
If copper alloy parts are used they shall be subjected to the stress corrosion test in annex K.
5
Powder container
5.1
Capacity
The volume shall be not more than 4000 l.
5.2
Design
The powder container shall be designed in accordance with EN 286-1 and shall be made of steel.
5.3
Maximum working pressure
The maximum working pressure shall not exceed 25 bar.
5.4
Colour
The powder containers shall be coloured red in accordance with #ISO 3864-1$.
5.5
####Container components$$$$
5.5.1
Powder filling opening
The powder filling opening of the container shall be not less than DN 100.
Sight-holes, handholes, headholes and manholes may be used for filling in accordance with EN 286-1, if they are located on the top of the powder container.
5.5.2
Drain connection
For inspection of the interior of the container and testing of the powder, a drain connection to empty the powder container #should$ be provided.
Drain connections #, if provided,$ shall be not less than:
- for V up to 1000 l : R 1/2 or Rp1/2 or G 1/2; - for V above 1000 l :
R 1 or Rp1 or G 1. SIST EN 12416-1:2001+A2:2007
EN 12416-1:2001+A2:2007 (E)
8
5.5.3
Pressure relief device
The powder container shall be fitted with a pressure relief device. The set pressure of the pressure relief device is never greater than the maximum working pressure, but after pressure relief has commenced the pressure can exceed the maximum working pressure by 10 % maximum. The gas flow rate through the pressure relief device shall be greater than the maximum rate of expellant gas entering into the powder container.
5.5.4
Connection for the expellant gas tube
The expellant gas tube shall be fitted to the powder container discharging the gas below the powder surface. The system shall be designed to prevent powder entering the expellant gas system.
5.5.5
Powder diptube
The powder container shall be fitted with a powder diptube.
The diptube shall be fixed with sufficient strength to resist damage during operation (filling, emptying of the container or during the discharge of powder).
#The length and configuration of the diptube shall be such that the volume of water remaining in the container at the end of the discharge is less than 5 % of the internal volume of the container.
The function of the container including the diptube shall be demonstrated by test as described in Annex D.$
6
Expellant gas container assembly
6.1
Expellant gas containers
Expellant gas containers shall be constructed in accordance with EN 1964-1, !EN 1964-2" and EN 1964-3.
To check the contents of the expellant gas container at any time, all individual containers shall be fitted with
a) a weighing device in case of pressure liquefied gases to weigh the contents;
b) in other cases with a working pressure gauge in accordance with Table 1 to indicate the internal pressure of the container.
6.2
Expellant gas valves
If the system has an automatic and a manual release, the expellant gas valve shall be in accordance with !EN 12094-4" but without a diptube. If the system has a manual release only, an expellant gas container valve in accordance with #EN ISO 10297$ may be used, in this case CO2 as expellant gas is not permitted and there is no need for any safety precautions, such as delay devices.
6.3
Actuators for expellant gas valves
Actuators for expellant gas valves shall comply with requirements for actuators in !EN 12094-4".
6.4
Manifolds
Manifolds shall withstand a pressure of 1,5 times the maximum pressure of the gas used at a temperature of 50 °C when tested in accordance with annex B.
# Manifolds shall be designed in accordance with the relevant requirements for the pipework design as described in EN 12416-2.$
6.5
Flexible connectors and non-return valve
Expellant gas containers shall be fitted to the pipework or the manifold by flexible connectors in accordance with EN 12094-8.
When more than one container is used, each flexible connection to a manifold shall be fitted with a non-return valve in accordance with #EN 12094-13.$
SIST EN 12416-1:2001+A2:2007
EN 12416-1:2001+A2:2007 (E)
9
7
Pressure gauges
Pressure gauges shall be in accordance with Table 1.
Table 1 - Pressure gauges
Parameter Pressure regulators Expellant gas container
A downstream B upstream
scale 0 to 1,5 times of the working pressure graduation 1 bar 5 bar 10 bar accuracy > 1,6% > 2% ± 5% diameter >38 mm
8
Pressure regulators
8.1
General
Powder containers with a capacity of more than 100 kg shall be fitted with a pressure regulator. A pressure regulator shall be fitted to build-up the necessary expellant gas pressure in the powder container and to maintain the working pressure of the powder system. The minimum setting of the pressure regulator shall be 10 % lower than the maximum working pressure. The pressure gauge shall be installed before (pressure gauge A) and after (pressure gauge B) the pressure regulator and in accordance with Table 1.
8.2
Material
All mechanical parts of the pressure regulator for the powder discharge valves and powder selector valves shall be made of metal or other materials which have at least the same performance characteristics.
Non-metallic materials and elastomers used in the pressure regulator shall not alter so that the operation is impaired before or after any of the tests. All materials shall be resistant to the media with which they come into contact.
If copper alloy is used the component shall be tested in accordance with annex K.
8.3
Corrosion resistance
The pressure regulator shall be tested in accordance with annex J.
8.4
Resistance to internal pressure
The regulator shall be tested in accordance with annex B.
8.5
Flow
The pressure regulator shall be designed so that the expellant gas flow ensures the required powder discharge in at least the minimum discharge time.
SIST EN 12416-1:2001+A2:2007
EN 12416-1:2001+A2:2007 (E)
10 9
Actuators
9.1
General
####9.1.1 Design
Actuators should be designed in accordance with EN 12094-4.
The requirements of this clause shall be met as minimum requirements.$
9.1.2
Materials
All mechanical parts of the actuator for the powder discharge valves and powder selector valves shall be made of metal or other materials which have at least the same performance characteristics.
Non-metallic materials and elastomers used in the actuator shall not alter so that the operation is impaired before or after any of the tests. All materials shall be resistant to the media with which they come into contact.
If copper alloy is used the component shall be tested in accordance with annex K.
9.1.3
Vibration resistance
The valve assembly including accessories and actuator shall not operate or be damaged when tested in accordance with annex H.
9.1.4
Temperature resistance
The actuator shall be tested in accordance with annex F and G.
9.1.5
Operational reliability
Actuators shall operate together with the associated valve and shall be tested in accordance with annex I.
9.1.6
Corrosion resistance
Actuators shall operate together with the associated valve and shall be tested in accordance with annex J.
9.1.7
Operating force
Corresponding to an opening time of maximum 1 s the effective force of the actuator shall be at least two times and in the case of pyrotechnic actuators at least three times the force necessary to open the valve under the most severe conditions, when the component is tested as specified in annex C.
9.1.8
Electric switch and monitoring equipment
The degree of protection for enclosures of the switch and monitoring equipment as well as solenoid coils shall comply with class IP 54 according to #EN 60529.$
9.2
Solenoid operated type actuators
9.2.1
The degree of protection for enclosures shall conform to a minimum classification of IP 54 in accordance with #EN 60529.$
9.2.2
The solenoid operated type actuators shall be tested in accordance with annexes C, D, E, F, G, H and I.
9.3
Pneumatic powered actuators
Pneumatic actuators of expellant gas containers shall comply with the requirements of !EN 12094-4."
Pneumatic actuators of powder container main isolating valves and selector valves shall comply with the requirements of #EN 12094-5 $ but shall operate in a maximum actuating time of 5 s. Pneumatic powered actuators shall be tested in accordance with annexes C, D, E, F, G, H and I. SIST EN 12416-1:2001+A2:2007
EN 12416-1:2001+A2:2007 (E)
11
9.4
Mechanical operated actuators
The drop distance shall be at least 75 mm greater than the distance required to open the valve.
Springs acting as the prime mover in the release device shall be free to complete their full travel without impedance.
9.5
Pyrotechnic actuators
The actuator shall be tested in accordance with annex C, D, E, F, G, H and I.
The manufacturer shall specify:
- minimum all-fire current and its minimum duration and the form of the signal; and - maximum monitoring current; and - range of voltage; and - maximum storage time under specified storage conditions; and - maximum life time under stand-by conditions (50°C and 70% relative humidity)
In addition data shall be provided by the manufacturer to show that:
a) the failure rate of the device in the energy transfer path does not exceed 1 in 100 000 at the recommended firing current; and
b) actuators will achieve the required power output after being subjected to a 90-day ageing test at a test temperature of (90 ± 2) °C; and
c) the power output of the actuator at the end of its service life as recommended by the manufacturer will be not less than three times that required to operate the valve at the most disadvantageous operating conditions.
9.6
Manually released actuators
The manually released actuators shall be protected against unintentional use.
The force required to operate a manually released actuator shall not exceed:
a)
150 N for hand operated controls; or b)
50 N for finger pull operated controls; or c)
10 N for finger push operated controls;
The movement of the release shall not exceed 300 mm to achieve actuation. The manual remote release shall be tested together with the actuator in accordance with C.1.5.
9.7
Use in combination
Actuators for use in combination shall comply with the individual requirements of the appropriate clauses when tested as a combined assembly.
10
Main isolating valve and selector valve
10.1
General
The main isolating valves and the selector valve shall have a mechanical indicator to show the open and closed position.
#Only ball valves or cavity free valves shall be used.$
SIST EN 12416-1:2001+A2:2007
EN 12416-1:2001+A2:2007 (E)
12
10.2
Material
All mechanical parts of main isolating valves and selector valves shall be made of metal or other materials which have at least the same performance characteristics.
Non-metallic materials and elastomers used in the main isolating valve and selector valve shall not alter so that the operation is impaired before or after any of the tests. All materials shall be resistant to the media with which they come into contact.
If copper alloy is used the component shall be tested in accordance with annex K.
10.3
Temperature resistance
Main isolating valves and selector valves shall be tested in accordance with annex F and G.
10.4
Resistance to pressure
The valve with actuator shall be tested in accordance with annex B.
10.5
Flow characteristics
The free flow cross section of the valve shall be not less than 95 % of the area given by the inlet pipe nominal diameter.
The flow characteristic of the valve shall be stated by the manufacturer, either as an equivalent length of pipe, equal to the inlet pipe nominal diameter or as a flow resistance coefficient.
The valves shall be designed so that during operation no part of the valve or its components shall be ejected outside of the confines of the valve or into the discharge pipework.
10.6
Corrosion resistance
The main isolating valves and selector valves shall be tested in accordance with annex J.
10.7
Vibration resistance
The valve assembly including access
...
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