DOCUMENT TITLE
: SITE VISIT REPORT
PROJECT TITLE
RFQ FOR THE PROCUREMENT,
INSTALLATION, COMMISSIONING &
CONFIGURATION OF CHROMATOGRAPH &
:
ANCILLARY EQUIPMENT AT OMOTOSHO
POWER PLANT GAS RECEIVING STATION
(GRS)
CLIENT
: PROPETROL LIMITED
1
16 APR 2022
Issued for Information
MA
AB
RS
REV
DATE
DESCRIPTION
ORIG
CHK
APPR
TABLE OF CONTENTS
1.
INTRODUCTION AND BACKGROUND .......................................................... 3
1.1.
PROJECT DESCRIPTION ............................................................................... 3
1.2.
OBJECTIVES ................................................................................................... 3
1.3.
SITE VISIT TEAM ............................................................................................. 3
2.
SITE VISIT OBSERVATIONS/FINDINGS ........................................................ 4
2.1.
OMOTOSHO POWER PLANT ......................................................................... 4
2.1.1. GAS CHROMATOGRAPH ............................................................................... 4
2.1.2. FLOW COMPUTER .......................................................................................... 5
2.1.3. FLOW METER .................................................................................................. 5
2.1.4. PRESSURE AND TEMPERATURE TRANSMITTERS .................................... 6
2.1.5. CABLE AND TUBING ...................................................................................... 6
2.1.6. SHELTER 6
1.
INTRODUCTION AND BACKGROUND
1.1.
Project Description
The Niger Delta Power Holding Company Limited (NDPHC) is desirous of accepting financial
quotations from suitable companies for the Procurement, Installation, Commissioning, and
Configuration of Chromatograph and Ancillary Equipment at the Omotosho Power Plant Gas
Receiving Station (GRS). Propetrol Limited has interest to participate in the bid for the project and
eventually execute it.
1.2.
Objectives
To achieve the project purpose, Site Visit was under taken by Propetrol team to acquire a
comprehensive knowledge, information and gain familiarity of the facilities involved. The Site Visit
was focused on gathering information regarding the following items/equipment within the
Omotosho power plant’s gas receiving station:
1.
2.
3.
4.
5.
6.
Gas Chromatograph
Flow Computer
Flow Meter
Pressure and Temperature Transmitters
Cable and Tubing
Shelter
- Carrier and Calibration Gas Cylinder Location
- GC Stand
1.3.
Site Visit Team
The site visit team comprised of the following personnel:
S/Nr
1
2
3
Name
Akinwale Biobaku
Musa Abdullai
John Datong
Remark
Participated on site
Participated on site
Participated off site
2.
SITE VISIT OBSERVATIONS/FINDINGS
2.1.
Omotosho Power Plant
2.1.1. Gas Chromatograph
As at the time of the site visit, there is no any existing gas chromatograph at the gas receiving
station. An existing Calorimeter at the MCC room of the Gas Receiving Station is non-functional.
A new gas chromatograph is required to analyze the gas received from the NGC. Omotosho
Power Plant. The operations and maintenance team suggest two gas sampling stream into the
chromatograph; sample stream 1 and 2 to be upstream and downstream of the water bath heaters
respectively. That is, gas sampling and analysis before and after heating.
Sample Points: The sample points for streams 1 and 2 feeding into the GC was identified on
site. Sample stream 1 (before heating in the water bath heater) will be on the arriving 10” gas line
downstream of the emergency shutdown valve, while sample stream 2 (for after heating) will be
upstream of the pressure regulating unit. (See image below).
Gas Chromatograph: The location for the GC was identified. It will be installed under a shelter
together with its ancillary equipment, namely - the carrier and calibration gas cylinders.
The maximum distance requirement from the sample points to the GC will determine the actual
location of the GC.
An adapter
will be used
to provide
slot for the
sample point.
The tubing will be routed to a
common header feeding the GC.
Sample Point for stream 1
(before heating)
Sample Point for stream 2
(after heating)
2.1.2. Flow Computer
The flow computer was identified on site. However, its functionality was not ascertained because
the existing flowmeter was not out of service.
Flow Computer
2.1.3. Flow Meter
The existing Ultrasonic Flow was non-functional. The face to face dimension of the meter is
approximately 2ft 6 inches (76.2cm)
Flow Meter Name Plate
Ultrasonic Flow Meter
2.1.4. Pressure and Temperature Transmitters
The existing Pressure and Temperature transmitter was identified on site. They need to be
replaced.
Pressure Transmitter (Typical)
Temperature Transmitter (Typical)
2.1.5. Cable and Tubing
The power and control cable, and the tubing are estimated to be 100m from the GC to the flow
computer located within the gas receiving station’s MCC.
2.1.6. Shelter
The space for locating the shelter for the GC and ancillaries was identified on site. The existing
shelter which currently accommodates extinguisher gas cylinders will be extended by a minimum
of 4ftx7ft to accommodate the GC stand, carrier and calibrating gas cylinders.
Existing Shelter
Identified space for Carrier and
Calibration gas Cylinders