Estate Service Asset - PDO

Petroleum Development Oman
Estate Services Asset
Environmental Assessment
2002 Review and Update
The mobile noise generating sources are the vehicles used for the transportation of
people and goods in and out of PDO coastal areas.
From all the above, the noise generation from these sources is considered as
intermittent. All these equipment generate noise levels ranging from 65 dB(A) to
above 90 dB(A) at the source points.
4.6 Accidental Leaks and Spills
Accidental leaks and spills may occur from oils, chemicals, sewage and water during
their storage and transfer. Oils and chemicals are not used in large quantities in the
areas serviced by estate services. The volume of sewage generated every day is quite
significant and may result in significant environmental impacts. The volume of water
handled is also quite large; however any accidental leaks or spills of water do not
result in any environmental consequences.
• Oil leaks and spills
Diesel oil is the only oil stored in bulk. In order to maintain adequate reserves of fuel
for the standby DGs near the computer building, diesel fuel is stored in two
aboveground mild steel tanks each of about 2.3 m 3 capacity. These storage tanks are
placed on cemented floor and bunded for containment of any leaks and spills. Any
major leaks and spills are recovered and sent to the oil saver pit located in MAF area
for recycling. Minor leaks are sponged off and any resulting waste is disposed as oily
waste.
Electrical transformers and switchgear also hold oil inventories. As required by the
Omani Electrical Standards, the transformer and switchgear areas are bunded and
provided with spill containment provisions. In the event of any major spill, the waste
oils are recovered and sent to the oil saver pit for recycling. Minor leaks are sponged
off and any resulting waste is disposed as oily waste. It may be noted that only the
transformer oils that are free (50 ppm PCB.
• Chemical leaks and spills
Among the chemicals, the only chemical with significant accidental leakage potential
is the sodium hypochlorite solution used for disinfection of potable water as well as
the water in the swimming pools. Sodium hypochlorite solution at about 4% strength
is stored in 200 L plastic drums and the dosing is done using on-line dosing pumps to
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