1.1.1 This document supersedes The Examination of Surveyable Machinery Items by Chief
Engineers Version 1.02, 01 March 2015 and PMS Interactive User Manual
Version 1.4, November 2016.
1.1.3 It also details how, subject to certain conditions, applicable machinery
items may be credited for survey based on examinations by the ship’s Chief Engineer.
1.1.5 The Chief Engineer should report to Lloyd’s Register without delay, any defect or
damage identified during an examination which could invalidate the conditions for
classification of the ship. In such cases, a Surveyor should be requested to attend
the ship to carry out a survey in accordance with normal practice. All repairs that
may be required, in order for the ship to maintain class, are to be carried out to
the satisfaction of the Surveyor.
1.1.6 It will be the responsibility of the Chief Engineer, in consultation with the Master
in their joint capacity as representatives of the Operator, to ensure that machinery
items are only opened up for examination under favourable conditions so that no
hazard, including fire, to the ship or cargo would result from breakdown of a
working unit.
1.1.7 Chief Engineers are reminded that overhaul of machinery items whilst at sea must not
compromise the redundancy / standby functions which are requirements of Statutory
Regulations and Classification Rules.
1.1.8 The arrangements described in this document do not apply to the ship’s
Superintendents.
NOTES:
- Any machinery item which is subject to a Condition of Class is excluded from
these arrangements and is to be dealt with by the Surveyor.
- See
Ch 3, 1.1 Applicable machinery items for a list of
typical machinery items that can be examined by Chief Engineers.
- See
Ch 3, 2.1 Inapplicable machinery items for a list
of typical machinery items that remain to be dealt with by Lloyd’s Register
Surveyors.
- For further information on machinery survey arrangements, contact your local
LR Office.
1.1.9 Engine Special Survey – ES
Complete Surveys of machinery by a Lloyd’s Register Surveyor, where all machinery
items are opened for survey, are due at five-year intervals.
1.1.10 Continuous Survey Machinery – CSM
Complete Surveys of machinery by Lloyd’s Register Surveyors may be carried out on a
Continuous Survey basis, where machinery items are opened for survey in rotation, to
ensure that the interval between consecutive examinations of each item will not
exceed five years. Subject to certain conditions, applicable machinery items may be
examined by the Chief Engineer, while at sea or at ports where LR is not
represented, followed by a limited confirmatory survey at the next port of call
where a Surveyor is available.
1.1.11 LR’s ShipRight Procedures for Machinery Planned Maintenance and
Condition Monitoring and Annexes to Machinery Planned Maintenance and
Condition Monitoring provide procedures and guidance for the approval and
management of Machinery Planned Maintenance and Condition Monitoring Schemes, where
the scope of traditional surveys is reduced or replaced by Annual Audits of the
Chief Engineer’s records by Lloyd’s Register Surveyors.
1.1.12 Approved Machinery Planned Maintenance Scheme – ShipRight MPMS descriptive
note
When an approved Machinery Planned Maintenance Scheme is in use, Chief Engineers may
carry out the examination of applicable machinery items, without the need for a
Lloyd’s Register Surveyor to be present. An Annual Audit is required, at which time
a Surveyor will undertake confirmatory surveys on those items to be credited which
have been examined by the Chief Engineer during the preceding year.
1.1.13 Machinery Condition Monitoring – ShipRight MPMS(CM) descriptive note
Where approved Machinery Condition Monitoring is in use, those monitored machinery
items need only be opened out for examination and survey when readings of condition
and performance parameters indicate deterioration beyond defined limits. Condition
records are examined at the Annual Audit to verify that they are within specified
limits and confirmatory readings may be taken to compare with the ship’s records.
The Operator decides the machinery items to be included in the scheme; the remaining
items not subject to condition monitoring are dealt with under MPMS /
CSM. The ship must be operating an approved Machinery Planned Maintenance
Scheme.
1.1.14 Predictive Techniques – ShipRight MPMS(CM, PT) descriptive note
Condition Monitoring and Computerised Maintenance Management Software can use complex
algorithms and machine learning to predict acceptability for continued service and
the requirement for maintenance. Such systems may also base their predictions on
knowledge gained from external sources, such as global equipment populations and
defect databases. These systems may be independent of the Original Equipment
Manufacturer (OEM) recommended maintenance and condition monitoring suggested
limits. Approval of this type of software is based on OEM recommendations, industry
standards and Class Society experience. The ship must be operating an approved
Machinery Planned Maintenance Scheme and approved Machinery Condition
Monitoring.
1.1.15 Risk Techniques – ShipRight MPMS(RBM / RCM) descriptive note
Operators may wish to base their machinery maintenance procedures on the results of
approved Risk based studies, such as Risk Based Maintenance (RBM) or
Reliability Centred Maintenance (RCM). Lloyd’s Register will accept this
approach for survey purposes providing certain requirements for operation of the
scheme are met. The ship must be operating an approved Machinery Planned Maintenance
Scheme.
1.1.16 Screwshaft Condition Monitoring – ShipRight SCM descriptive note
For screwshafts, the use of condition monitoring can provide an alternative method of
survey of the tailshaft and stern tube bearing. With the SCM procedure, the
tailshaft need not be withdrawn from the stern tube bearing at the required survey
intervals if condition monitoring data is found to remain within permissible limits.
It should be noted that fixed pitch propellers are still required to be removed and
controllable pitch propellers opened up for examination in accordance with the
prescribed survey regulations. It is not necessary for the ship to be operating an
approved Machinery Planned Maintenance Scheme.
1.1.17 Turbine Condition Monitoring – ShipRight TCM descriptive note
For steam turbines for direct main propulsion, there is a procedure based on the use
of condition monitoring and performance measurements. With the TCM procedure,
the turbine top casings need not be lifted for examination of the rotors and
diaphragms if vibration measurements and a performance trial indicate satisfactory
condition. It is not necessary for the ship to be operating an approved Machinery
Planned Maintenance Scheme.
1.1.18 Thruster Condition Monitoring – ShipRight ThCM descriptive note
For thrusters and podded propulsors, there is a specific procedure based on the use
of condition monitoring. With the ThCM procedure, items can be credited at
alternate five-yearly surveys, based on acceptable condition monitoring results
without the need for opening out.
1.1.19 Assignment of descriptive notes
Compliance with the procedures will lead to descriptive notes being assigned for
inclusion in Lloyd’s Register’s Register of Ships.
For example:
ShipRight (MPMS(CM, PT), ThCM) indicates that the ship is using an approved
Machinery Planned Maintenance Scheme, with Condition Monitoring, Predictive
Techniques, and Thruster Condition Monitoring.
1.1.20 Where applicable, an appropriate ‘Actionable Item’ will be entered on the ship’s
survey status.