Specifications

NAIROBI OPERATIONAL HUB
UNOPS Building, UN Lane, Off UN Avenue Tel: [phone]
P.O Box 783,Village Market, 00621 E-mail: [e-mail]
Nairobi, Kenya Website: www.unops.org
UNOPS is ISO 9001 certified
After connection of ground rods to each manhole’s grounding mat, the Contractor
shall obtain a ground resistance measurement from a flush ground plate. These data
shall be obtained, identified, and recorded and the results sent to the Supervising
Engineer within five days.
The ground resistance measurement data may indicate that additional ground rods are
required. The Contractor shall furnish, install, and connect additional ground rods as
the Supervising Engineer may direct.
D. Operation Control
The Supervising Engineer will establish a system of operation control as the
permanent equipment and systems are completed and capable of energization.
The system will consist of placing appropriate tags on each item of equipment and
each system component indicating its current status and requiring mandatory
clearances from designated personnel to operate, energize or remove from service
the equipment or systems. The controls established will encompass the following
phases:
1. Equipment or systems completed to the point where they may be energized,
pressurized or operated but not yet checked out will be tagged and the sources of
power or pressure will be turned off and tagged. The affected components shall
not be operated without clearance.
2. Following initial operation of the equipment or system, tagging will be performed
as in 1 and the affected components shall be operated only by the personnel
designated by the Supervising Engineer.
3. Equipment and systems released for service will be so tagged. Only the personnel
so designated by the Supervising Engineer shall operate or remove from service
such systems or equipment. When a request to remove from service is made, all
controls and sources of power or pressure will be tagged out and shall be operated
under any circumstances. Only the personnel originally tagging the system shall
clear the system from service.
The Supervising Engineer will establish the procedures and details of the
operation control system. All notification of status and requests for clearances for
operations shall be made to the Supervising Engineer. The procedures established
shall be followed.