Common use of Design and standardization Clause in Contracts

Design and standardization. The Goodshall be designed to facilitate inspection, cleaning and repairs, and for operation in which continuity of service is the first consideration. All apparatus shall be designed to ensure satisfactory operation under the atmospheric conditions prevailing at the Sites and under such sudden variations of load and voltage as may be met with under working conditions on the system , and short circuits, including those due to faulty synchronising within the rating of the apparatus. The design shall incorporate every reasonable precaution and provision for the safety of all those concerned in the operation and maintenance of the Goods and of associated works supplied under other Contracts. All material used shall be of the best quality and of the class most suitable for working under the conditions specified and shall withstand the variations of temperature and atmospheric conditions arising under working conditions without distortion or deterioration or the setting up undue stresses in any part, and also without affecting the strength and suitability of the various parts for the work which they have to perform. No welding, filling or plugging of defective parts will be permitted without the sanction in writing of the Engineer. Corresponding parts liable to renewal shall be interchangeable. When required by the Engineer, the Supplier shall demonstrate this quality. All apparatus shall operate without undue vibration and with the least practicable amount of noise. Cast iron shall not be used for xxxxxxxx of oil-filled apparatus or for any part of the equipment which is in tension or subject to impact stresses except where it can be shown that service experience has been satisfactory with the grade of cast iron and the duty proposed. Operating boxes, kiosks, cubicles and similar enclosed compartmentsforming part of auxiliary equipment shall be adequately ventilated to restrict condensation, and,where required by the Engineer, suitable low-temperature heaters shall be provided. All contactor or relay coils and other parts shall be suitably protected against corrosion. All outdoor apparatus, including bushing insulators and fittings shall be so designed as to avoid pockets in which water can collect. The underside of all tanks shall be ventilated in an approved manner to prevent corrosion. Accessible means shall be provided for the easy lubrication of all bearings and where necessary, of any mechanism or moving part. Grease lubricators shall be fitted with hexagon nipples. All mechanisms shall, when necessary, be constructed of stainless steel, brass or gunmetal to prevent sticking due to rust or corrosion. All taper pins used in any mechanism shall be of the split type. The busbars, connections, isolators, fuses, contacts, cable boxes, trunking connections etc,. which form part of the Contract Works shall not exceed the temperature rise values specified in the relevant IEC publication or equivalent national standard. All connections and contacts shall be of ample section and surface for carrying continuously the specified currents without undue heating, and shall be secured by bolts or set screws of ample size, fitted with locking devices of approved type and material. All rubbing or wearing surfaces shall be machine surfaced. Joints employing a gasket material shall be so consturcted that the packing is maintained under sufficient compression in all parts, so that an efficient joint can be made without the use of jointing compounds. Gasket material shall be of the minimum thickness necessary and of approved composition. All apparatus shall be designed to obviate the risk ofaccidental short circuit due to animals, birds, and vermin. Openings in ventilated enclosures shall be so constructed to prevent the entry of vermin and insects.

Design and standardization. The Goodshall Goods shall be designed to facilitate inspection, cleaning and repairs, and for operation in which continuity of service is the first consideration. All apparatus shall be designed to ensure satisfactory operation under the atmospheric conditions prevailing at the Sites and under such sudden variations of load and voltage as may be met with under working conditions on the system system, and short circuits, including those due to faulty synchronising within the rating of the apparatus. The design shall incorporate every reasonable precaution and provision for the safety of all those concerned in the operation and maintenance of the Goods and of associated works supplied under other Contracts. All material used shall be of the best quality and of the class most suitable for working under the conditions specified and shall withstand the variations of temperature and atmospheric conditions arising under working conditions without distortion or deterioration or the setting up undue stresses in any part, and also without affecting the strength and suitability of the various parts for the work which they have to perform. No welding, filling or plugging of defective parts will be permitted without the sanction in writing of the Engineer. Corresponding parts liable to renewal shall be interchangeable. When required by the Engineer, the Supplier shall demonstrate this quality. All apparatus shall operate without undue vibration and with the least practicable amount of noise. Cast iron shall not be used for xxxxxxxx of oil-filled apparatus or for any part of the equipment which is in tension or subject to impact stresses except where it can be shown that service experience has been satisfactory with the grade of cast iron and the duty proposed. Operating boxes, kiosks, cubicles and similar enclosed compartmentsforming compartments forming part of auxiliary equipment shall be adequately ventilated to restrict condensation, and,, where required by the Engineer, suitable low-temperature heaters shall be provided. All contactor or relay coils and other parts shall be suitably protected against corrosion. All outdoor apparatus, including bushing insulators and fittings shall be so designed as to avoid pockets in which water can collect. The underside of all tanks shall be ventilated in an approved manner to prevent corrosion. Accessible means shall be provided for the easy lubrication of all bearings and where necessary, of any mechanism or moving part. Grease lubricators shall be fitted with hexagon nipples. All mechanisms shall, when necessary, be constructed of stainless steel, brass or gunmetal to prevent sticking due to rust or corrosion. All taper pins used in any mechanism shall be of the split type. The busbars, connections, isolators, fuses, contacts, cable boxes, trunking connections etc,. which form part of the Contract Works shall not exceed the temperature rise values specified in the relevant IEC publication or equivalent national standard. All connections and contacts shall be of ample section and surface for carrying continuously the specified currents without undue heating, and shall be secured by bolts or set screws of ample size, fitted with locking devices of approved type and material. All rubbing or wearing surfaces shall be machine surfaced. Joints employing a gasket material shall be so consturcted that the packing is maintained under sufficient compression in all parts, so that an efficient joint can be made without the use of jointing compounds. Gasket material shall be of the minimum thickness necessary and of approved composition. All apparatus shall be designed to obviate the risk ofaccidental short circuit due to animals, birds, and vermin. Openings in ventilated enclosures shall be so constructed to prevent the entry of vermin and insects.