CHAPTER 9 AUXILIARY SYSTEMS
9.1 Scope
This chapter covers all auxiliary equipment and components required to support mission equipment and mission functions and the hazards that these create. This does not include equipment and components for Control System, Electrical Systems, Navigation Systems or Propulsion and Manoeuvring Systems, which are covered in chapter 4 Control System, chapter 5 Electrical Systems, chapter 6 Navigation Systems, and chapter 7 Propulsion and Manoeuvring respectively.
9.2 Goal
The auxiliary systems shall be designed to support mission equipment and mission functions with a level of integrity sufficient to meet the operational requirements and be operated and maintained safely as and when required within its design or imposed limitations in all Reasonably Foreseeable Operating Conditions.
9.3 Functional Objectives
9.3.1 The auxiliary systems shall be designed and constructed to:
(a) Enable their operation in all Reasonably Foreseeable Operating Conditions;
(b) Operate in a predictable manner with a level of integrity commensurate with operational and safety requirements;
(c) Meet requirements for watertight, weathertight and fire integrity;
(d) Minimise the risk of initiating fire and explosion;
(e) Enable the maintenance and repair in accordance with the maintenance philosophy.
9.3.2 Additional systems or equipment not directly covered by this chapter, shall not affect the auxiliary systems.
9.4 Performance Requirements
9.4.1 The auxiliary systems shall be designed and arranged to meet the required level of integrity established by the process in chapter 1 General, considering equipment failure rates and the effect of flood or fire.
9.4.2 For all auxiliary systems installed, the choice of materials and components of construction as well as the design, location and installation shall be made according to the environmental, maintenance and operating conditions in order to ensure the continued function of the equipment during all Reasonably Foreseeable Operating Conditions.
9.4.3 Ambient conditions shall be controlled where required to suit the operating environment and auxiliary systems requirements.
CHAPTER 9 AUXILIARY SYSTEMS 9.4 Performance Requirements
9.4.4 Auxiliary systems shall be designed to meet the mission equipment and mission function requirements in all Reasonably Foreseeable Operating Conditions.
9.4.5 The supply of energy source shall be sufficient to meet operational requirements with adequate reserve.
9.4.6 The energy source for auxiliary systems shall also meet the required level of integrity.
9.4.7 Any penetrations in watertight and weathertight boundaries due to auxiliary systems shall be designed in accordance with the requirements of chapter 3 Stability.
9.4.8 Pressure vessels and associated piping systems and fittings shall be of a design and construction adequate to safely contain media and safely release pressure. This is to take account of the anticipated internal and external pressure and temperature profiles and the service for which they are intended.
9.4.9 Auxiliary systems shall be designed to minimise the risk of initiating a fire including consideration of the following:
(a) Surface temperatures of systems shall not become a source of ignition in case of flammable fluid leaks;
(b) Failure of a joining arrangement shall not pose a further risk (e.g. due to atomisation of hydrocarbons, leakage of water onto electrical equipment etc.);
(c) Suitable arrangements to prevent the ignition of vapours in a tank shall be provided.
9.4.10 Suitable precautions against the build-up of electrostatic charges shall be provided.
9.4.11 Auxiliary systems shall be designed such that they will not unduly affect any other system including under failure conditions.
9.4.12 Where appropriate to meet the defined operational requirement, auxiliary systems shall be protected against damage by fire in accordance with chapter 8 Fire.
9.4.13 Safe access shall be provided to the auxiliary systems including means of isolation and access provision in the event of equipment failure or for maintenance.
9.4.14 Information and instructions shall be supplied to the Operator to ensure the safe operation, fault finding and maintenance of machinery, under all Reasonably Foreseeable Operating Conditions.
APPENDIX A CONCEPT OF OPERATIONS 9.4 Performance Requirements
APPENDIX A CONCEPT OF OPERATIONS
<If appropriate, official seal of the Recognized Organization>Particulars of the MASS MASS Name
Type e.g. (Surface)
Date last updated
(date) The Owner
Defines the ship details, role and extreme threat survivability, and agrees the foreseeable damage survivability, maintenance philosophy and environmental conditions.
Signed
Name
Position
Address
Date of Signature Official Seal
Primary and secondary roles Primary Roles
(high level overview of primary roles in sufficient detail for standards to be selected and the design completed) Secondary Roles
(high level overview of secondary roles in sufficient detail for standards to be selected and the design completed)
MASS Attributes
APPENDIX A CONCEPT OF OPERATIONS
(restricted by range and range to refuge {links time, speed, sea state}, restricted to sheltered waters)
Description of Owners required level of integrity according to chapter 1 General.
Safety Operational
*Add sub-level systems as required
Environment
A - Meteorology and climatology (above surface)
APPENDIX A CONCEPT OF OPERATIONS 9.4 Performance Requirements
Wind
(maximum Beaufort Force or speed for operation and for survival) Precipitation
(if specifically required, e.g. Tropical Storm) Air temperature – high
(specify e.g. Maximum mean daily max)
Air temperature – low
(specify e.g. Minimum mean daily min) Air humidity
(if not 100 per cent relative humidity at all air temperatures) Ice accretion
(if specifically required) Visibility
(if specifically required, e.g. night operations) Atmospheric pressure
(if specifically required, e.g. operations in coastal waters near deserts)
Flora and fauna
(if specifically required, e.g. in waters of known high activity)
B - Sea surface, Bathymetry and oceanography (below surface) Waves
(Sea State, significant wave height, maximum wave height) Waves - other situations
(if specifically required, e.g. operations in surf, tidal bore)
Sea temperature – high
(specify e.g. Maximum mean daily max) Sea temperature – low
(specify e.g. Minimum mean daily min) Tide
(range (height) and maximum speed (relevant to berthing))
Green seas and spray
(area affected, frequency)
Ice navigation
(if specifically required, e.g. icebreaking) Sea surface quality (floating objects,
pollution) (if specifically required, e.g. operations in estuaries)
Maximum from equilibrium Period
Roll degrees seconds
Pitch degrees seconds
MASS motions Yaw degrees seconds
Heave meters seconds
Surge meters seconds
APPENDIX A CONCEPT OF OPERATIONS 9.4 Performance Requirements
Sway meters seconds
(design values for deviations from the static position) Vibration
(motion induced and wave induced) Pressure (depth)
(for specific features in head of sea water) Ocean currents
(if specifically required, e.g. drift) Water quality
(salinity/visibility) (if specifically required, e.g. operations in estuaries) Flora and fauna
(if specifically required, e.g. in waters of know high activity) D – Geotechnical
Bottom/Ground conditions
(if specifically required) Banks (including canals)
(dimensions, bottom conditions if specifically required) E – Human Caused Environment
Berthing
(maximum speed of contact) Beaching
Shipping/Storage Towing and salvage
Acoustic fields
(if specifically required) Electro-magnetic fields
(if specifically required) Launching and recovery
(assumptions for build) Noise and vibration
APPENDIX A CONCEPT OF OPERATIONS 9.4 Performance Requirements
Operating philosophy
Modes of Operation Occasionally Manned Semi-Autonomous Fully-Autonomous
Remotely Operated Restrictions and limitations
Cargo restrictions:
Loading restrictions:
Structural limitations:
Other:
(including all restrictions and limitations that are acceptable under the role of the MASS) Role Specific Operations
(requirements relating to the specific role of the vessel, e.g. cargo handling, requirement for low flashpoint fuels including their stowage etc.) Anchoring and mooring
(frequency of use, limitations due to sea conditions) Towing (other than for
emergencies)
(requirement for / being towed, operational scenarios, etc.) Lifting, launch and recovery, and
Transport
(how will the MASS be deployed, etc.) Management of hull strength
(approach to management of structure, etc.) Buoyancy and stability
(approach to management of stability, e.g. stability information book approval, loading instrument, damage control philosophy)
APPENDIX A CONCEPT OF OPERATIONS 9.4 Performance Requirements
Machinery and Electrical systems Operating Philosophy:
Equipment:
Propulsion system:
Maneuvering system:
Buoyancy and stability systems:
Other machinery systems:
Electrical storage systems:
Electrical generation system:
HV power supply & distribution:
LV power supply & distribution:
Control systems:
Communications systems:
Navigation systems:
Auxiliary Systems:
(description of major equipment and systems)
APPENDIX A CONCEPT OF OPERATIONS 9.4 Performance Requirements
Fire safety Fuel Payload
Fuel in tanks
Survey and Maintenance Containment
Prosecution
Fire-extinguishing equipment Recovery
Damage extent (fire)
Re-configuration and redundancy Post damage capability
External Assistance Shore Connection Ship-to-MASS Connection Navigation
(operational requirements for navigation equipment and workstations, mission functionality, DP, ACP, Navigation and operational lighting) Carriage of dangerous goods
Recoverability
(means of recovering the MASS following system failure)
APPENDIX A CONCEPT OF OPERATIONS 9.4 Performance Requirements
Survey, Maintenance and Disposal philosophy
Survey philosophy
(overview of survey and inspection philosophy) Survey schedule
(survey cycle and scope of survey) Maintenance philosophy
(overview of maintenance philosophy) Maintenance schedule
(maintenance cycles and depth of planned maintenance) Disposal philosophy
(overview of disposal philosophy)
APPENDIX B VERIFICATION METHODS 9.4 Performance Requirements
APPENDIX B VERIFICATION METHODS
Verification Method Requirements (Draft)
Statements of Compliance are to be issued by the Designer COMPONENTS
Statement of Compliance*
issued (or validated) by an independent QC department or 3rd Party
Manufacturers Statement of Compliance*
* Certification formats and levels to be agreed in accordance with the requirements of the reference standards used and required Level of Integrity.
HULL
Statement of Compliance to be issued by the
Manufacturer
Construction premises and processes are to be audited by CR
Statement of Compliance to be issued by the Manufacturer components in accordance with plans reviewed by CR
Final inspection of installed components.
General examination by CR in accordance with the agreed periodic survey requirements.
MODIFICATIONS Details of modifications are to be approved by CR and trials are to be carried out under survey
Details of any modifications are to be recorded to enable review by CR
Modifications are to be reviewed to ensure they do not change the LoI of the system