BS4994 (formally: 4994:1987) is the 'specification for the design and construction of vessels and in '. It specifies a code of practice for use by manufacturers of such containers. With the publication of BS EN 13121-3, BS 4994:1987 Specification for design and construction of vessels and tanks in reinforced plastics is declared obsolescent, which will still cover those tanks still in service as tanks made from GRP are generally accepted to have a long working life.
Dual laminate construction, simple FRP with glass mats, or a combination of unidirectional filament winding are common. DUAL LAMINATE: A lining material, preferably 3mm to 5mm thick sheet functions as a corrosion barrier. This thermoplastic liner is not considered to contribute mechanical strength. FRP which is constructed over this lining provides the strength requirements for materials to withstand design conditions like pressure, vacuum, hydrostatic load, etc. The choice of thermoplastic is based on the chemical corrosion requirement of the equipment., are used as common thermoplastic liners. FRP (GRP): Glass mats in the form of chopped strand mat and woven roving is most common in hand lay-up method. These mats are laid on the mold and impregnated with 'initiated' resins like polyester, epoxy, vinyl ester, bisphenol epoxy vinyl ester, etc.
The choice of resin is based on the chemical corrosion requirement of the equipment. An earlier version of the specification was BS 4994:1973. NEW LOAD UNITS: It is to avoid the uncertainty associated with specifying the thickness alone, that BS4994 introduced the concept of 'unit properties'. It is property per unit width, per unit mass of reinforcement. For example, UNIT STRENGTH is defined as load in Newtons per millimeter (of laminate width) for a layer consisting of 1 kg of glass per square meter, i.e., the unit is N/mm per kg/m2 glass.
This standard still remains as most popular reference material for Further reading. BS 4994:1987 – Specification for design and construction of vessels and tanks in reinforced plastics.
British Standards. ESR Technology. Archived from on 2007-05-12. — a case study of the design process of a cylindrical vessel, using the BS 4994 methodology. See also.
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Technical handbooks. Codes of practice. Guidelines. Specifications for products, dimensions, and performance. Glossaries PLEASE NOTE the following definitions as applied to British Standards:. Withdrawn: the standard is no longer current.
Obsolescent: the standard is not recommended for use for new equipment, but is retained to provide for the servicing of existing equipment that is expected to have a long working life. BS SERIES TITLE BS 6949:1991 Confirmed, Current Specification for bitumen-based coatings for cold application excluding use in contact with potable water BS 470 - 1984 Confirmed, Current Specification for inspection, access and entry openings for pressure vessels BS 476-3 - 2004 Confirmed, Current Fire tests on building material and structures. BS 476-4 - 1970 Current Fire tests on building materials and structures. Non-combustibility test for materials BS 476-6 – 1989 + A1:2009 Confirmed, Current Fire tests on building materials and structures.
Method of test for fire propagation for products BS 476-7 - 1997 Confirmed, Current Fire tests on building materials and structures. Method of test to determine the classification of the surface spread of flame of products BS 476-10 - 2009 Confirmed, Current Fire tests on building materials and structures. Guide to the principles, BS 476-11 - 1982 Confirmed, Current Fire tests on building materials and structures. Method for assessing the heat emission from building materials BS 476-12 - 1991 Confirmed, Current Fire tests on building materials and structures.
Method of test for ignitability of products by direct flame impingement BS 476-13 – 1987, ISO 5657:1986 Current Fire tests on building materials and structures. Method of measuring the ignitability of products subjected to thermal irradiance BS 476-15 – 1993 Superseded, Replaced by BS ISO 5660-1:2015 Fire tests on building materials and structures.
Method for measuring the rate of heat release of products BS 476-20 - 1987 Current Fire tests on building materials and structures. Method for determination of the fire resistance of elements of construction (general principles) BS 476-21 - 1987 Current Fire tests on building materials and structures. Method for determination of the fire resistance of loadbearing elements of construction BS 476-22 - 1987 Confirmed, Current Fire tests on building materials and structures. Methods for determination of the fire resistance of non-loadbearing elements of construction BS 476-23 - 1987 Confirmed, Current Fire tests on building materials and structures.
Methods for the determination of the contribution of components to the fire resistance of a structure BS 476-24 – 1987, ISO 6944:1985 Current, Work in hand Fire tests on building materials and structures. Method for the determination of the fire resistance of ventilation ducts BS 476-31.1 - 1983 Confirmed, Current Fire tests on building materials and structures.
Methods for measuring smoke penetration through doorsets and shutter assemblies BS 476-32 - 1989 Confirmed, Current Fire tests on building materials and structures. Guide to full scale fire tests within buildings BS 476-33 – 1993, ISO 9705:1993 Current Fire tests on building materials and structures.
Search Results Search results for 'BS 499' Standard/Title.BESTSELLER. Welding terms and symbols. Glossary for welding, brazing and thermal cutting Welding terms and symbols. Definitions for electric welding equipment Welding terms and symbols.
European arc welding symbols in chart form Specification for propylene copolymer pressure pipe Methods of test for aluminium fluoride for industrial use. Determination of phosphorus content Methods of test for aluminium fluoride for industrial use. Determination of fluorine content Methods of test for aluminium fluoride for industrial use.
Determination of iron content Methods of test for aluminium fluoride for industrial use. Determination of silica content Methods of test for aluminium fluoride for industrial use.
Preparation and storage of test samples Methods of test for aluminium fluoride for industrial use. Determination of moisture content (Karl Fischer method) Methods of test for aluminium fluoride for industrial use. Determination of moisture content (gravimetric method) Methods of test for aluminium fluoride for industrial use. Determination of sodium content Methods of test for aluminium fluoride for industrial use. Determination of sulphate content Methods of test for aluminium fluoride for industrial use.
Determination of sulphur content (X-ray fluorescence spectrometric method) Specification for design and construction of vessels and tanks in reinforced plastics Recommendations for measurement of the veiling glare index of lenses and optical systems Specification for line traps for power line carrier systems Specification for wooden axilla crutches Specification for moulded thermoplastics dustbins (excluding lids) General requirements for rotating electrical machines. Specification for symbols General requirements for rotating electrical machines. Specification for voltage regulation and parallel operation of a.c. Synchronous generators General requirements for rotating electrical machines.
Specification for standard dimensions General requirements for rotating electrical machines. Specification for standard dimensions General requirements for rotating electrical machines.
Specification for tests General requirements for rotating electrical machines. Specification for winding terminations General requirements for rotating electrical machines. Specification for dimensions of brushes and brush-holders for electrical machinery BS ISO 4990:2015 Steel castings. General technical delivery requirements BS ISO 4991:2015 Steel castings for pressure purposes BS ISO 4992-1:2006 Steel castings.
Ultrasonic examination. Steel castings for general purposes BS ISO 4992-2:2006 Steel castings. Ultrasonic examination. Demarrage par auto transformateur pdf files. Steel castings for highly stressed components. Page 1 of 2.
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