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Dust Emissions
Upgrading of Coal Mill System
The upgrade of the coal-mill system at CMS Cement Sdn
Bhd in 2013 from a ball-mill type that was able to grind a
maximum of 15 MT per hour to a new coal-mill type which
has a capacity of 22 MT per hour has resulted in lower
specific power consumption and lower dust emissions.
Baghouse Dust Collector
In 2015, CMS Premix Sdn Bhd’s pollution control system
was changed from a Venturi Scrubber to a Baghouse
Dust Collector and this has brought about the following
advantages:
• It does not require water to operate;
• Dust is recycled back into the asphalt rather than
the dust and water sludge being discharged to the
sediment pond; and
• It achieves zero emissions.
Dust emissions from our Construction Materials &
Trading Division was similar to its air emissions above.
In addition, PPES Works (Sarawak)’s efforts to reduce its
dust emissions from its projects include washing through,
dewatering and cleaning its sites.
Vibrations
In the quarry business, ground vibrations are one of the
risk factors impacting the surrounding landscape and
infrastructure, as uncontrolled vibrations may cause
severe damage to nearby utilities and pipelines. When
blasting, CMS Quarries Sdn Bhd monitors its seismic
vibrations in three directions at right angles to each other
– radial, transverse and vertical. In 2016, our consultants
took seismic and air vibrations measurements on various
occasions.Theminimum, average andmaximum readings
are presented below.
CMS Quarries’s recorded average vibration was 5.21
mm/s, surpassing the permissible level of 5 mm/s.This
was because the vibrometer was installed closer to the
blast than was required due to the availability of space at
the plant. In any case, the number of blast holes has now
been reduced in order to further reduce the vibration
levels.
In our CMS Clinker’s limestone quarry, which comes under
the Cement Division, the recorded average vibration was
below 2 mm/s. Across all our quarries, average air blasts
were recorded to be within the Malaysian Recommended
Air Quality Guidelines’ maximum of 12 d(B)A.
Channel/Measurement
Min
.
Avg
.
Max
.
Radial Velocity (mm/s)
0.06
3.858 14.605
Transverse Velocity (mm/s)
0.127
4.110 11.113
Vertical Velocity (mm/s)
0.127
3.076 10.033
Vector Sum (mm/s)
0.28
5.176
17.69
CMS Quarries Sdn Bhd (Stabar Quarry) Vibrations Monitoring
BIODIVERSITY
Biodiversity, also known as the enriching or restoring, of
the natural world is an integral part of our environmental
efforts. We are committed to not only protecting our
environment, but also to cultivating and developing it.
In 2016, our Property Development Division exceeded its
target to plant approximately 200 trees across its various
developments by planting 294 trees at the Rivervale
Residences. A total of 17 different species of trees
were planted. They consist of the following: 122 White
Bucida, 18 Green Bucida, 27 pine trees, 6 Flame of the
Forest, 35 Willows, 23 Hopea Oderate, 4 Leopard Trees,
1 Bucida Tikus, 4 Mouvar Ball Yellow Trees, 2 Happiness
Trees, 2 Batik Leaves, 2 Philodendrons, 4 Yellow Palms, 2
Juniperus Comunis, 40 Coleus Blumei, 1 Loropetalum,
and 1 Fan Palm.
At PPES Works (Sarawak), the Company has been
busy replanting ‘quick rooting’ and sustainable native
vegetation. These include three pot plants, low growing
native trees and shrub buffers along the stream.
Our Cement Division’s contribution towards biodiversity
included the planting of over 300 trees around the new
cement mill or plant and some existing buildings in CMS
Clinker and CMS Cement Bintulu.
Our Construction Materials & Trading Division also
contributed towards the environment by planting around
900 trees at its sites across Sarawak.
To further inculcate the concept of biodiversity into
our work culture, we organised the ‘CMS Goes Green’
competition which consisted of three categories and
three prizes that included a cash prize and certificate. In
the first category, the contest saw the QA Department
from our Cement Division and the Group Procurement
Department vie for the title of ‘CMS Greenest Office.’
Their initiatives included creating posters, making
recycled bins available, placing more plants throughout
the office and even planting a garden outside the office.
The second and third categories for the contest revolved
around CMS Clinker planting more trees, flowers and a
herb garden and a creative recycling project respectively.
We also observed Earth Hour by switching of all
lights between 8.30pm-9.30pm while several cycling
enthusiasts from our offices participated in an Earth Hour
Night Ride.
Samalaju Eco Park
Samalaju Eco Park Township, a 2,000-acre eco-themed
township adjoining the Samalaju Industrial Park (SIP)
has been the crowning development for our Samalaju
Development Division, since the project was launched in
2015.
Environment