3.1.1 The
gas turbine package is to be designed and constructed to operate in
all normal and reasonably foreseeable abnormal operating and fault
conditions.
3.1.2 The
choice of materials and components of construction, as well as the
design, location and ship installation, is to be made according to
the environmental, maintenance and operating conditions in order to
ensure the continued function of the equipment during all normal and
reasonably foreseeable abnormal operating and fault conditions and
to reduce the risk of:
- injury to embarked personnel;
- damage to the equipment, the system it is contained within or
adjacent equipment and systems;
- damage to the ship;
- damage to third parties;
- pollution of the environment.
3.1.3 Systems supplying the gas turbine package shall be continuously available
or recoverable without compromising the safety of the gas turbine system following a
single operational action or system/equipment fault.
3.1.4 Where the gas turbine package is required for the provision of Mobility
systems or Ship Type systems, the availability of these systems is to be maintained by
means of:
- reliability, especially of any single points of failure and taking
into account factors such as erosion, fatigue, corrosion and mechanical
damage due to vibration; and/or
- redundancy to minimise single points of failure, this is to be
supported by the engineering safety and justification report required
by Vol 2, Pt 2, Ch 2, 5.2 Documentation 5.2.8.
3.1.5 The
design, construction, installation and operation of the gas turbine
package are to minimise the risk of fire.
3.1.6 The
design, construction, installation and operation of the gas turbine
package are not to cause interference or excessive forces that could
lead to its failure or failure of other equipment and systems.
3.1.7 The gas turbine package is to be capable of continuous operation at its
maximum rating in the conditions defined in Vol 2, Pt 1, Ch 3, 4 Operating conditions or the ship’s ConOps, whichever is the more onerous.
Partial reductions in capability for operation in defined extreme conditions are subject
to special consideration and the agreement of the Owner; provided Mobility systems and
Ship Type systems are maintained at a declared performance level acceptable to LR and
the Owner.
3.1.8 The
materials of the gas turbine package and its components are to have
adequate strength and adequate corrosion resistance for the stated
design life with clearances appropriate to the operating temperatures.
3.1.9 The
design of the gas turbine package, and the design of any fixed or
portable equipment supplied to support maintenance and repair activities,
is to be such that all maintenance and repair activities, including
‘upkeep by exchange‘, can be undertaken effectively and
safely.
3.1.10 Safe
access is to be provided to the gas turbine package, including access
provision in the event of equipment failure, fault finding and diagnostics.
3.1.11 The
gas turbine package is to be provided with arrangements for control,
monitoring, alert and safety systems that will maintain the package
in a safe state throughout all normal and reasonably foreseeable abnormal
operating and fault conditions.
3.1.12 All
control, monitoring, alert and safety systems are to be compatible
with, and be capable of interfacing with, the ship’s Platform
Management System.
3.1.13 Noise
and vibration from the gas turbine package are to be attenuated to
requirements of an appropriate standard, agreed by the Naval Administration.
3.1.14 The
environmental conditions and atmosphere of the space containing the
gas turbine unit are to be maintained during all normal and reasonably
foreseeable abnormal operating and fault conditions, in a range which
is acceptable for Operators and appropriate to equipment installed
in the space.
3.1.15 Operators
are to be provided with adequate information and instructions for
the safe operation and maintenance of the gas turbine package, including
information on potential failures that could lead to hazardous or
major consequences and degradation in systems performance that could
lead to failures.