50 million - 130 million. Meanwhile pipelines in India
are rapidly increasing their share in fuel transportation
– directly stimulating the requirement for automatic
sampling.
What is being carried?
Facilities for refined products are most often shared,
between users and between the types and grades of liquids
they carry. A single pipeline might handle, for example,
different grades of diesel oil and gasoline for road vehicles,
as well as jet fuel for use in aircraft and oil for heating.
Individual batches may be directed to different
destination, but in the pipeline they follow closely on
one another and there is mingling at each interface, which
may call for the contaminated ‘transmix’ segment to be
separated and re-processed in a refinery.
In these circumstances pipeline operators, their
customers and other interested parties need to establish
throughout the line precisely what is being carried, its
chemical content, purity and other relevant properties. The
most accurate, cost-efficient way of gathering and assessing
this data is by means of automatic sampling and analysis.
Case study: Rewari to Kanpur pipeline
The 440 km Rewari to Kanpur pipeline (RKPL) under
construction for Hindustan Petroleum Corporation Limited
(HPCL) – one of India’s major refinery companies – is an
ongoing project of strategic importance in the country’s
distribution network. It is a multi-product pipeline
for transporting high-speed diesel fuel, kerosene and
various Euro grades of petrol, with a planned capacity of
8 million tpy.
To identify individual products, and to check quality
parameters, fast loop analyser systems for measuring
density, viscosity and other properties are installed at
lengthy intervals along the main pipeline. They are also
located at associated refineries and at distribution centres,
where refined product is received for distribution to the
consumer channel. Each loop has its own pump, which is
required to work reliably 365 dpy on a 24 hr/d duty cycle.
In line with previous practice, pumps typically used for
this application on the RKPL and other networks in India
have been magnetic drive (gear or centrifugal) pumps, in
which torque is transferred from motor shaft to impellor or
gear assembly using magnetic force to bridge a deliberate
gap in the mechanical power train.
Magnetic drive pumps are primarily designed to prevent
leaks. But drive elements and the pumped liquid are not
totally isolated from each other. The pumps can still
be vulnerable when handling non-lubricants and liquids
containing abrasive solids. Experience on the RKPL and
other Indian pipelines has highlighted this problem.
DESIGN
&
BUILD
Mears is a single-source project solution for Horizontal
Directional Drilling. Guided by our engineering expertise, we
overlap the design and construction phases of a project to
minimize risk, abbreviate the delivery schedule and provide the
optimum solution for your project.
- Conventional HDD Crossings
- Marine crossings (Water-to-Water and Shore Approaches)
- Hard Rock Drilling
- Design/build
- Engineering, Procurement and Construction
- Direct Pipe®
Mears Design/Build: Engineering solutions developed to meet
geographical, environmental and climatic challenges head-on.
Certified in Safety, Quality, and Environmental: OHSAS 18001:2007,
ISO 9001:2008 and ISO 14001:2004.
Direct Pipe® is a US registered trademark owned by Herrenknecht AG of the Federal Republic
of Germany, which is not affiliated with Mears Group, Inc.
