Section 1 Requirements for Condition Monitoring and Condition-Based Maintenance Systems
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Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Ships, July 2022 - Part 5 Main and Auxiliary Machinery - Chapter 21 Requirements for Condition Monitoring and Condition-Based Maintenance Systems - Section 1 Requirements for Condition Monitoring and Condition-Based Maintenance Systems

Section 1 Requirements for Condition Monitoring and Condition-Based Maintenance Systems

1.1 Scope

1.1.1 The requirements of this Chapter are applicable to condition monitoring and condition-based maintenance systems which:

  1. provide control, alarm or safety functions for essential machinery and equipment (see Pt 6, Ch 1, 2.1 General 2.1.1) in accordance with manufacturers recommendations; or

  2. provide machinery condition related information as part of a machinery planned maintenance scheme for use as an alternative to machinery and equipment surveys required by the Regulations (see Pt 1, Ch 3 Periodical Survey Regulations) in accordance with LR’s ShipRight procedures.

1.1.2 Condition monitoring systems which deviate from the requirements of this Section but provide an equivalent level of performance may be submitted to LR for consideration.

1.1.3 The requirements of this Section and LR’s ShipRight Procedures for Machinery Planned Maintenance and Condition Monitoring are to be applied to condition monitoring systems where the assignment of the ShipRight(MPMS(CM)) descriptive note is requested.

1.1.4 The requirements of this Section and LR’s ShipRight Procedures for Machinery Planned Maintenance and Condition Monitoring are to be applied to machinery condition-based maintenance systems that make use of predictive techniques where the assignment of the ShipRight(MPMS(PT)) descriptive note is requested in addition to the MPMS(CM)) descriptive note.

1.2 Plans and particulars

1.2.1 The information and plans required to be submitted are as specified in the relevant Chapters of Pt 5 Main and Auxiliary Machinery and Pt 6 Control, Electrical, Refrigeration and Fire applicable to the particular machinery and where specified in this Chapter.

1.2.2 In addition to information required by Pt 5, Ch 21, 1.2 Plans and particulars 1.2.1, the documents listed in the ShipRight Procedures for Machinery Planned Maintenance and Condition Monitoring are to be submitted to LR for consideration.

1.2.3 Equipment type approval reports providing evidence of compliance with Pt 5, Ch 21, 1.3 General requirements for condition monitoring systems 1.3.1 and Pt 5, Ch 21, 1.3 General requirements for condition monitoring systems 1.3.2 are to be submitted.

1.3 General requirements for condition monitoring systems

1.3.1 Condition monitoring equipment is to be capable of providing the service for which it is intended and is to satisfy the relevant requirements for condition monitoring equipment in LR’s Type Approval System.

1.3.2 Condition monitoring equipment is to be suitable for the environment in which it is intended to operate and is to satisfy the relevant requirements for environmental testing in LR’s Type Approval System, Test specification No.1.

1.3.3 The installation of condition monitoring equipment in spaces and locations in which flammable mixtures are liable to collect, e.g. ,areas containing flammable gas or vapour and/or combustible dust, is to be minimised as far as is practicable and is to satisfy the relevant requirements for the use of electrical equipment in flammable atmospheres in Pt 6, Ch 2, 14 Electrical equipment for use in explosive gas atmospheres or in the presence of combustible dusts.

1.3.4 Where permanently installed condition monitoring systems are used, the cables are to comply with the relevant Sections of Pt 6, Ch 2, 11 Electric cables, optical fibre cables and busbar trunking systems (busways) and the piping systems are to comply with relevant Sections of Pt 5, Ch 12 Piping Design Requirements and Pt 5, Ch 13 Ship Piping Systems.

1.3.5 Where the system is based on programmable electronic systems, the requirements of Pt 6, Ch 1, 3.6 Displays 3.6.3 are to be complied with.

1.3.6 Portable condition monitoring equipment is to be maintained and calibrated in accordance with a recognised National or International Standard to ensure the accuracy of the readings obtained. The standard is to include the issue of calibration certificates by a recognised test house in accordance with a recognised National or International Standard for instrument calibration. Copies of calibration certificates are to be retained on board and referenced on all condition monitoring reports submitted as part of the onboard condition monitoring program. Portable equipment used in hazardous areas is to be of a safe type suitable for use in the appropriate hazardous zone.

1.3.7 Measuring points are to be clearly identified in the submission and proposals to ensure repeatability of measurements are to be included.

1.3.8 The condition monitoring equipment is, as far as is practicable, to be located and installed such that it is accessible for maintenance and survey.

1.3.9 The condition monitoring equipment is to be installed in accordance with the manufacturer’s instructions and to the satisfaction of the LR Surveyor.

1.3.10 Boilers and pressure vessels are not eligible for reduced survey intervention based on condition monitoring.

1.4 Requirements for systems providing control, alarm and safety functions

1.4.1 In addition to the requirements of Pt 5, Ch 21, 1.3 General requirements for condition monitoring systems, condition monitoring equipment which provides control, alarm or safety functions for essential machinery and equipment is also to satisfy the relevant requirements for control, alarm and safety systems in Pt 6, Ch 1 Control Engineering Systems and the installation of electrical equipment in Pt 6, Ch 2 Electrical Engineering.

1.5 Requirements for systems providing machinery condition related information as part of condition-based maintenance systems

1.5.1 In addition to the requirements of Pt 5, Ch 21, 1.3 General requirements for condition monitoring systems, condition monitoring equipment which provides condition related information as part of a machinery planned maintenance scheme for use as an alternative to machinery and equipment surveys required by the Regulations is also to satisfy the relevant requirements of LR’s ShipRight Procedures for Machinery Planned Maintenance and Condition Monitoring.

1.5.2 Where condition monitoring data is used as part of a condition-based maintenance system, persons interpreting data and making diagnostic decisions are to be suitably competent, in accordance with ISO 18436 or an equivalent recognised National Standard. Evidence of competence, including training certificates of those providing analysis and data interpretation, are to be submitted and held on board. These certificates are to be made available to LR on request for audit and survey purposes.

1.5.3 The condition monitoring equipment is, as far as is practicable, to be located and installed such that it is accessible for maintenance and survey.

1.5.4 Limiting parameters (alarms and warnings) are to be based on the manufacturer’s guidelines, or a recognised International Standard.

1.6 Requirements for maintenance systems using predictive techniques

1.6.1 Machinery maintenance systems which make use of predictive techniques, when being used as an alternative to machinery and equipment surveys required by the Regulations, are also to satisfy the requirements of this Section and the relevant requirements of LR’s ShipRight Procedures for Machinery Planned Maintenance and Condition Monitoring.


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