Standards

This document specifies a method for the magnetic particle testing of ferro-magnetic steel and iron castings. It also gives acceptance criteria through severity levels defined by the nature, the area and the dimensions of the discontinuities present. This document is applicable to all ferro-magnetic castings, independent of the moulding method. A steel and iron casting is considered to be ferro-magnetic if the magnetic induction is greater than 1 T

(Tesla) for a magnetic field strength of 2,4 kA/m. This document only applies to those areas of the castings specified for testing, as well as the percentage

of castings to be tested

This document specifies a method for the liquid penetrant testing of steel and iron castings.

The requirements cover television equipment intended for household and commercial use on supply circuits in accordance with the National Electrical Code, NFPA 70. 

This standards covers thermoplastic and rubber tapes for use as electrical insulation at not more than 600 V and at 80C (176 F) and lower temperatures on joints and splices in wires and cables in accordance with the National Electrical Code. It is intended that rubber tape on a joint or splice be mechanically protected by a covering such as friction tape . Thermoplastic tape is acceptable without the additional mechanical protection.

This standard specifies requirements and dimensions for PVC insulated cables for operation at nominal voltages up to and including 1900 V to armour or earth and 3300 V between conductors.

This standard covers thermoplastic and rubber tapes for use as electrical insulation at not more than 600 V and at 80 C (176 F) and lower temperatures on joints and splices in wires and cables in accordance with the National Electrical Code.. It is intended that rubber tape on a joint or splice be mechanically protected by a covering such as friction tape . Thermoplastic tape is acceptable without the additional mechanical protection.

This standard describes the requirements and operational parameters for electrical appliance protectors for use with equipment at normal voltage of 110V, 120V,220V, 240V and a current of up to including 40 A.

This British Standard specifies requirements for the construction dimensions and mechanical and electrical properties of non- armoured polyvinyl chloride (PVC) insulated cables for operation at voltages up to and including 450 V a.c. to earth and 750 V a.c between conductors, intended for electric power lighting and internal wiring.

1.1    These requirements cover the installation of lightning protection systems on all types of structures other than structures used for the production, handling, or storage of ammunition, explosives, flammable liquids or gases, and other explosive ingredients including dust.

1.2    These requirements apply to lightning protection systems that are complete and cover all parts of a structure. Partial systems are not covered by this standard.

 
1.4    Adjacent structures shall be considered separate structures.

1.5    Adjacent structures with lightning protection shall be considered part of the structure if the adjacent structure’s lightning protection system complies with this standard and is connected to the lightning protection system of the structure in accordance with Section 10.4.

1

1.7    Free standing Walkways shall be considered an adjacent structure under the following conditions:

     a)  It is separated by a fire wall and conductive media that is shared by both facilities has an SPD in accordance with Section 13.

1.8      This standard does not cover lightning protection for:

       a)  Electric transmission lines or open air distribution racks,

       b)  Outdoor substations or switch yards, and

       c)  Electric generators unenclosed by a building other enclosed structure.

1.9    Enclosed generators and conventional building structures at or associated with generators or power plants, etc. are covered.

1

1.1    These requirements cover industrial control panels intended for general industrial use, operating from a voltage of 1000 volts or less. This equipment is intended for installation in ordinary locations, in accordance with the National Electrical Code, ANSI/NFPA 70, where the ambient temperature does not exceed 40°C (104°F) maximum.