Specifications

NAIROBI OPERATIONAL HUB
- National Fire Protection Association (NFPA)
B. Standards for materials and the design of equipment are quoted throughout
this specification and the Contractor shall produce copies of these Standards as
required and instructed by the Engineer. If the Contractor offers equipment,
which is not manufactured, in compliance with these Standards the equipment
offered should be at least equal in performance and quality to that required by
the relevant Standard.
C. In the event of the Contractor offering materials or equipment which differs
from that described in this Specification, the Contractor shall include for all
the costs involved in checking the design, any necessary redesign, drawings
and the modifications to other equipment of the affected system.
D. While making an offer, the Tenderer should specify the name of the
Manufacturer he intends to use for the supply of each equipment material/light
fitting etc. In offering such material or equipment or light fitting he shall
include with his tender the detailed information necessary to demonstrate
quality. The presentation of such data shall take the form of a comparison
sheet giving on one column the critical parameters required by the relevant
Standard and/or equipment specified and an adjacent column giving the
standards of the equipment offered in the Tender. Where manufacturers
names are particularly specified for any item, the contractor must choose from
the specified manufacturer(s).
E. The term "materials" as used in this Specification refers to any basic
engineering equipment which forms part of the installation but which in itself
does not form a unit which can be specified with an output performance.
F. Materials are related to a Standard whenever applicable and it is deemed that
such reference, without further amplification, includes the whole of the current
Standard. With the approval of the Engineer, alternative and equivalent
National or International Standards may be used, but these must be declared
and agreed at the time of Tendering.
G. All materials/equipments/light fittings manufacturers selected by the
contractor shall have established local agents.
1.07 CAPACITIES AND DERATING FACTORS
The capacities and ratings of the equipment, electrical components and accessories
shall be sufficient to give satisfactory service in the environments conditions stated
herein before.
Sizes of electrical cables and wires shall be determined by suitably derating the
current ratings of such cables and wires in accordance with the rating factors indicated
in the I.E.E. Regulations. The attention of the Contractor is drawn to the fact that the
application of derating factors for the higher ambient temperatures will not by itself