NATIONAL ALUMINIUM COMPANY LIMITED - Rites

4.9.7 DESIGN IMPROVEMENTS
The Employer/RITES or the Contractor may propose changes in the specification of the
equipment or quality thereof and if the parties agree upon any such changes the
specification shall be modified accordingly. If any such agreed upon change is such that it
affects the price and schedule of completion, the parties shall agree in writing as to the
extent of any changing g the price and/or schedule of completion before the Contractor
proceeds with the change. Following such agreement, the provision thereof, shall be
deemed to have been amended accordingly.
4.9.8 EQUIPMENT BASES
A cast iron or welded steel base plate shall be provided for all rotating equipment which is to
be installed on a concrete base, unless otherwise specifically agreed to by the Employer.
Each base plate which support the unit and its drive assembly, shall bbe
e of a neat design with
pads for anchoring the units.
4.9.9 PROTECTIVE GUARDS
Suitable guards shall be provided for protection of personnel on all exposed rotating and/or
moving machine parts. All such guards shall be designed for easy installation and removal for
maintenance purpose.
4.9.10 LUBRICANTS, SERVO FLUIDS AND CHEMICALS
(a) The Contractor’s scope includes all the first fill of consumables such as oils, lubricants
including grease, servo fluids, gases and essential chemicals etc. Consumption of all thes these
consumables during the initial operation and final filling after the initial operation shall also
be included in the scope of the Contractor.
(b) The variety of lubricants shall be kept to a minimum possible. Detailed specifications for the
lubricating oil, grease, gases, servo fluids, control fluids, chemicals etc. required for the
complete plant covered herein shall be furnished. On completion of erection, a complete list
of bearings/ equipment giving their location and identification marks shall be furnis furnished to
the Employer along with lubrication requirements.
4.9.11 Lubrication
Equipment shall be lubricated by systems designed for continuous operation. Lubricant level
indicators shall be furnished and marked to indicate proper levels under both standsti standstill and
operating conditions.
4.9.12 Material of Construction
All materials used for the construction of the equipment shall be new and shall be in
accordance with the requirements of this specification. Materials utilised for various
components shall be those which have established themselves for use in such applications.
4.9.13 RATING PLATES, NAME PLATES & LABELS
Technical Specifications: Sec-5,General Techn chnical Requirements
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