BS EN 13308-2002 pdf download

08-14-2021 comment

BS EN 13308-2002 pdf download.Tanks for transport of dangerous goods Service equipment for tanks Non pressure balanced footvalve.
This BS EN 13308 is applicable to non pressure balanced footvalve and specifies the performance requirements, critical dimensions and tests necessary to verity the compliance of the equipment with this standard.
The equipment specified by this standard is suitable for use with liquid petroleum products and other dangerous substances of Class 3 of ADR – European Agreement concerning the International Carriage of Dangerous Goods by Road — (flammable liquids) which have a vapour pressure not exceeding 110 kPa at 50 °C and petrol, and which have no-sub-classification as toxic or corrosive.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at 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).
prEN 12266-1:1999, Industrial valves — Testing of valves — Part 1: Tests, test procedures and acceptance cntenà to be fulfilled by every valve.
EN 12266-2:2002, Industrial valves — Testing of valves — Part 2: Supplementary tests, test procedures and acceptance criteria.
ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AOL) for lot-by-lot inspection.
3 Terms and definitions
For the purposes of this European Standard, the following terms and definitions apply.
3.1
run off pipe
the transfer pipe, including equipment and fittings, on the vehicle which connects the non pressure balanced tootvalve to the loading/unloading adaptor
3.2
self closing valve
a valve held in the closed position by means of stored energy (such as a spring) which opens only by application of
external force and which closes when the external force is removed
3.3
maximum allowable working pressure (MAWP)
the madmum pressure to which the equipment is designed to operate
5.3 MountIng
5.3.1 The tank mounting flange shall be in accordance with Annex A;
5.3.2 The pipe connection flange shall be in accordance with Annex B or Annex C according to the specified type.
5.4 Bottom loading flow characteristics
5.4.1 The non pressure balanced footvalve shall be suitable for bottom loading rates up to 150 m3!h at a working pressure up to 500 kPa;
5.4.2 The non pressure balanced footvalve design shall be such that turbulence, jetting or spraying of product is effectively controlled.
5.5 Actuation
5.5.1 The non pressure balanced footvatve shall be externally actuated by mechanical, pneumatic or other means.
5.5.2 The non pressure balanced footvalve shall close if its actuating means fails or is disconnected, except during loading.
5.5.3 The setting of the valve to the open position shall be visible.
5.5.4 A mechanical means of externally operating the non pressure balanced footvalve may be provided for use in case of an emergency
5.5.5 The means of actuation of the non pressure balanced footvalve shall be so designed as to prevent inadvertent opening through impact or unconsidered action.
5.6 Break-away security
5.6.1 The non pressure balanced tootvalve seat shall be designed to be located within the envelope of the tanker compartment.
5.6.2 The non pressure balanced I ootvalve shall be designed such that in the event of accidental damage, the external housing shall break away, leaving the non pressure balanced footvalve sealing mechanism within the tank compartment intact.
5.6.3 The impact energy required to break away the external housing of the non pressure balanced footvalve shall not exceed 1 kJ.
5.7 Temperature range
Unless otherwise specified, the design temperature range shall be – 20 °C to 50 cc.
Where the non pressure balanced footvalve is subjected to more severe conditions, the design temperature range
shall be extended to- 40 CC or + 70 ‘C as applicable.
5.8 Materials of construction
The manufacturer shall provide, with the equipment, a full material specification for those parts which may come into contact with the substances specified in the scope.
5.9 ElectrIcal resistance
The electrical resistance between any conductive part of the valve which may come into contact with the transported substances and the main body of the valve shall not exceed 106 0.
Provision shall be made for the bonding of the main body of the valve to the tank such that the electrical resistance between the two shall not exceed 10 0.
5.10 Strainer
The non pressure balanced footvalve shall be capable of accepting a strainer to minimize the possibility that loose foreign objects within the tank might prevent the closure of the non pressure balanced footvalve.
6 Tests
6.1 General
Two classes of tests are required, production tests and type tests.
Testing methods and procedures shall comply with the requirements of prEN 12266-1:1999 and EN 12266-2:2002 except as specified or amended within this standard.
6.2 Production tests
6.2.1 General
The number, frequency and sampling methods of production test samples shall not be less than those specified within ISO 2859-1, (AOL of 2,5).BS EN 13308-2002 pdf download.

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