Section
3 Survey requirements
3.1 General
3.1.3 Requests
from the Owner for the deferment of thorough examinations will be
considered and may be permitted in the circumstances given in Ch 12, 3.5 Deferment of surveys.
3.1.6 Requests
for other examinations not specified above will be specially considered.
Such examinations will, generally, be covered by separate instructions
since they will normally involve the specific requirements of a National
Authority.
3.2 Initial Survey of new installations
3.2.1 Materials
used in the construction of the lifting appliance are to comply with Ch 1, 1.6 Materials and fabrication. Materials test certificates are
to be made available.
3.2.2 The lifting
appliance is to be examined during construction and the Surveyor is
to be satisfied that the primary structural arrangements and workmanship
are in accordance with the approved plans. Any details, required for
further clarification or certification purposes, not in accordance
with the approved plans or otherwise found to be unsatisfactory are
to be rectified.
3.2.4 Non-Destructive Examination (NDE) is to be carried out by suitably qualified
Operators to the satisfaction of the Surveyor. The minimum requirements for NDE are
given in Table 12.3.1 Minimum requirements for
NDE, but this may be extended at the discretion
of the Surveyor. For the steels shown in Table 12.3.2 Cooling times prior to
Non-Destructive Examination, the following cooling times are to be observed
prior to the application of NDE to completed welding.
Table 12.3.1 Minimum requirements for
NDE
| Weld category
|
Butt welds,
see Note 1,2
|
Fillet
welds,
see Note 1,2
|
Magnetic Particle
Inspection,
see Note 3
|
Ultrasonic
Inspection
|
Magnetic Particle
Inspection,
see Note 3
|
| Critical weld
|
100%
|
100%
|
100%
|
| Primary weld
|
100%
|
20%
|
100%
|
| Secondary weld
|
see Note 4
|
—
|
see Note 4
|
The
following definitions are applicable:
Critical
weld.
The failure of which will result in the loss
of the lifting appliance or load being lifted, e.g. slewing bearing
flange/crane pedestal weld, circumferential welds on slewing columns,
mast fittings, rope termination brackets, jib heel welds, etc.
Primary weld.
Welds in primary load path members
the failure of which may lead to the loss of the load being lifted, e.g.
boom chord connection, connections of bracings to boom chords, connection
of panel stiffeners to jib or slewing column
Secondary
weld.
Non primary load path welding, e.g.
attachment of accessways, platforms, service fittings (electrics,
lighting), maintenance equipment, etc.
|
|
Note
1. The percentage of weld found in table
is the percentage of total weld length to be tested with a specified
technique.
Note
2. All welds are to be subject to 100%
visual inspection.
Note
3. Dye penetrant testing is to be used in
place of magnetic particle inspection for non-magnetic materials, i.e.
aluminium, austenitic stainless steel, etc.
Note
4. Extent of inspection to be agreed
between the manufacturer and Surveyor.
|
Table 12.3.2 Cooling times prior to
Non-Destructive Examination
| Type of steel
|
Cooling time prior to applying NDE
(after all welds have
reached ambient temperature and after any applicable post-weld heat
treatment)
|
| Specified yield strength < 420 N/mm2 and CE ≤ 0,41
|
On
welded structure reaching ambient temperature
|
| 420
N/mm2 ≤ Specified yield strength ≤ 690
N/mm2
|
Not
before 48 hours after completion of welding
|
| Specified yield strength > 690 N/mm2
|
Not
before 72 hours after completion of welding
|
|
Note 1. At the
discretion of the Surveyor, the 72 hour interval may be reduced to 48
hours for radiographic or ultrasonic inspection, provided there is no
indication of delayed cracking, and a complete visual and random
magnetic particle or penetrant inspection to the satisfaction of the
Surveyor is conducted 72 hours after welds have been completed and
cooled to ambient temperature.
Note 2. Regardless
of yield strength, consideration is to be given to requiring a delayed
inspection where evidence of delayed cracking has been observed in
production welds.
Note 3. At the
discretion of the Surveyor, a longer interval and/or additional random
inspection at a later period may be required, for example, in case of
high thickness welds.
|
3.2.5 Where PWHT is carried out the requirement for testing after a delay period may be
relaxed, at the discretion of the Surveyor.
3.2.6 Particular
attention is to be given to the supporting structure for masts, crane
pedestals and overhead runway beams. It is to be verified that the
scantlings and arrangements are in accordance with approved plans.
3.2.7 All ropes
used in the load path of the lifting appliance are to be examined
in order to verify that:
- they have been manufactured and tested in accordance with the
requirements of this Code, or to a recognised National or International Standard, by
a manufacturer approved by LR;
- they can be individually identified by disc or tally and have
the appropriate certificates;
- they are of the correct construction, diameter, lay and
direction of lay, wire quality and have the correct certified minimum breaking
strength; and
- rope terminations comply with Ch 12, 1.3 Steel wire rope 1.3.6.
Ropes that are supplied by a manufacturer not approved by LR
may require further testing in the presence of the Surveyor before
they can be accepted.
3.2.8 All loose
gear for the installation is to be examined in order to verify that:
- the item has been designed, manufactured and tested in accordance with
the requirements of this Code, or a recognised National or International
Standard;
- the item is individually marked, load tested and certified;
and
- the item is of the correct SWL for its proposed location in
the installation, as indicated in the approved plans.
3.2.9 The lifting
appliance is to be tested as required by Ch 12, 1 Testing. Cut-outs, controls and similar devices are to function correctly.
After testing, the installation, including the supporting structure,
is to be examined for deformation or distortion to the satisfaction
of the Surveyor.
3.2.10 For certification
purposes, factory testing of cranes cannot be accepted as an alternative
to onboard testing after installation.
3.2.11 The Register
of Ship’s Lifting Appliances and Cargo Handling Gear (LA.1),
together with the Certificate of Test and Thorough Examination
of Lifting Appliances (LA.2) may be issued upon satisfactory
completion of the above procedures.
3.2.12 When it is intended to build lifting appliances for certification or
classification with LR, constructional plans and all necessary particulars relevant to
the lifting appliance as detailed in the Code (see
Ch 1, 3 Plans and information to be submitted) are to be submitted for approval before the work is
commenced. Any subsequent modifications or additions to the scantlings, arrangements or
equipment shown on the approved plans are also to be documented and submitted for
approval.
3.3 Initial Survey of existing installations
3.3.1 Where LR
is requested to issue certification either to replace existing certification
issued by another authority or because the original certification
issued by another authority is lost or no longer valid, the following
procedure is to be adopted:
-
Plans and information
of the scantlings and arrangements of the installation are to be submitted
for approval. Where plans are not obtainable, adequate drawings are
to be prepared by the Owner from dimensions and scantlings measured
on board the ship.
-
Certification of all
loose gear is to be examined and, where certificates are missing,
items are to be re-certified by proof testing and re-marked if necessary.
-
A thorough examination
of the complete installation and support structure is to be carried
out.
-
The installation is
to be tested as required by Ch 12, 1 Testing.
3.3.2 The Register
of Ship’s Lifting Appliances and Cargo Handling Gear (LA.1),
together with the Certificate of Test and Thorough Examination
of Lifting Appliances (LA.2) may be issued upon satisfactory
completion of this procedure.
3.4 Periodical Thorough Examinations
3.4.1 It is a statutory
requirement of most National Authorities that, following certification
at the Initial Survey, the equipment is thoroughly examined regularly
to maintain the validity of the certification. The interval between
thorough examinations is to be not greater than 12 months, see
Table 12.3.3 Intervals between Periodical
Thorough Examinations. However, the Owner is also
to ensure that they comply with any statutory requirements in this
respect.
Table 12.3.3 Intervals between Periodical
Thorough Examinations
| Lifting
appliance
|
Examination type and interval
|
| Cranes and derrick
cranes
|
Annual Thorough
Examination
|
| Lifting
appliances on fixed and mobile offshore installations
|
Annual
Thorough Examination
|
| Lifting
appliances on fixed and mobile offshore installations used for manned diving
operations
|
6-monthly
Thorough Examination
|
| Lifting
appliances for manned diving systems
|
6-monthly
Thorough Examination
|
| Lifting
appliances handling personnel
|
6-monthly
Thorough Examination
|
| Launch and recovery
appliances for manned small watercraft
|
6-monthly Thorough
Examination
|
| Lifts
|
Annual Thorough
Examination
|
| Ramps
|
Annual Thorough
Examination
|
| Shiplift and transfer
systems
|
See
Ch 5 Shiplift and Transfer Systems
|
| Launch and recovery
appliances for survival craft and rescue boats
|
See
Ch 3 Launch and Recovery Appliances for Survival Craft and Rescue Boats
|
|
Note 1. Annual Thorough
Examinations are to be held once in every 12-month period, unless
otherwise stated by the ship’s Flag Administration.
Note 2. The thorough
examination of the appliances and their associated equipment by a
competent person shall be documented and shall be made available to the
attending Surveyor.
|
3.4.2 The procedure
to be adopted at Periodical Thorough Examinations is as follows:
-
Verification that the
existing certification is valid, up to date and issued by a competent
authority.
-
Thorough examination
of the lifting appliance and retesting where required. Guidance on
the extent of the examination can be found in Table 12.3.4 Limits of weardown and
corrosion, as applicable.
-
Endorsement of the Register
of Ship’s Lifting Appliances and Cargo Handling Gear (LA.1) or
equivalent documents and issue of certificates as necessary.
Table 12.3.4 Limits of weardown and
corrosion
| Item
|
Limits
|
Remarks
|
| Structural
members
|
10% maximum at any point,
based on the material thickness
|
—
|
| Loose
gear
|
5% on any
diameter
|
Item may
not be able to sustain the proof load
|
|
|
2% on any
diameter of a pin in a hole
|
| Wire
ropes
|
Wire ropes may become
unfit for service due to a number of factors: visible broken wires, change
in diameter, strand fracture, deformation, damage and corrosion, both
internal and external. The discard criteria will vary with the type of
construction and rope size. In the absence of any criteria issued by the
rope manufacturer, reference must be made to ISO 4309 where clear discard
criteria are given
|
—
|
Table 12.3.5 Annual Thorough Examination of
derrick systems
| Item
|
Survey
|
|
|
General
note
|
|
The thorough examination
shall take into account the designer’s/manufacturer’s maintenance and
inspection instructions and recommendations.
|
| 1.
|
Certification
|
(a)
|
Check that certification,
in the form of a Register of Ship’s Lifting Appliances and Cargo Handling
Gear or Cargo Gear Register Book issued by a competent body, exists for the
rigs to be examined.
|
|
|
|
(b)
|
Check the
Register for any outstanding endorsements, recurring problems, down-ratings,
etc.
|
|
|
|
If there is no evidence that the rigs have ever been
certified, the thorough examination is to be declined and LR’s certification
services for existing rigs may be offered
|
|
|
|
(c)
|
Check the
Register for any repairs or modifications.
|
|
|
|
(d)
|
Check the
maintenance records.
|
|
|
|
|
|
| 2.
|
Arrangements
|
Check that arrangement of loose gear, rigging, guys,
mast stays, etc. is as shown in Cargo Gear Particulars Book or Rigging
Plan.
|
|
|
|
|
|
| 3.
|
Derrick boom
and mast fittings
|
(a)
|
Inspect
Iugs, fittings, brackets, etc. at derrick head and mast head.
|
|
|
|
(b)
|
Withdraw and
inspect goosenecks, trunnion fittings, etc. together with their
pins.
|
|
|
|
(c)
|
Withdraw
other pins and inspect mast head span swivels, tumblers, etc.
|
|
|
|
(d)
|
Check pins
for deformation, wear, scoring or other defects.
|
|
|
|
(e)
|
Inspect any
independent anchorages for heel blocks.
|
|
|
|
(f)
|
Check
efficiency of lubrication to swivels, goosenecks, trunnions, etc.
|
|
|
|
|
|
| 4.
|
Fittings on
deck
|
(a)
|
Inspect
deck eyeplates, cleats, wire rope stoppers, etc. used in normal working, as
indicated by the Master or Officer in charge, for wear or
deformation.
|
|
|
|
(b)
|
Check weld
attaching eyeplates to deck.
|
|
|
|
|
|
| 5.
|
Derrick
boom
|
(a)
|
Inspect the
structure for condition of coating. Inspect for corrosion. (Where this is
suspected, paint is to be removed as necessary.) Special attention is to be
paid to the part of the boom which comes into contact with the crutch or
housing.
|
|
|
|
(b)
|
Hammer test
boom and, if then considered necessary, check thickness by ultrasonic
testing or other suitable methods that do not affect the material or
condition of the boom.
|
|
|
|
(c)
|
Look for
any scars or dents and check that boom is not bent.
|
|
|
|
(d)
|
Where
appropriate, check condition and free movement of the head and heel
fittings. Where considered necessary, the boom may be manoeuvred through all
its working positions.
|
|
|
|
|
|
| 6.
|
Blocks
|
(a)
|
Verify that
blocks are of the appropriate Safe Working Load for the position in which
they are rigged and properly certificated.
|
|
|
|
(b)
|
Block
inspection may be carried out on board the ship, provided the necessary
facilities are available. Where repair of the block is necessary, it is to
be carried out in a properly equipped workshop.
|
|
|
|
(c)
|
Sheaves and
pins are to be removed, but sheaves forming an integral part of the derrick
boom may be examined in situ.
|
|
|
|
(d)
|
Load bearing
parts of the block, including head fittings, are to be cleaned (the paint
being removed where necessary) and inspected for signs of excessive or
uneven wear, cracks, lack of lubrication or scoring of the rope
groove.
|
|
|
|
(e)
|
The nut or
collar of the shank or swivel head fittings is to be inspected to check that
it is securely fastened and free from visible defects. The shank should turn
freely by hand and wear is not to be excessive. The shank is to be removed
if required.
|
|
|
|
(f)
|
Cheek and
partition plates are to be examined for any signs of buckling, distortion,
cracks, ovality in pin holes and sharp edges.
|
|
|
|
(g)
|
If any
repair affects the strength of the block, or if a certificate of test is not
available, or if the unique identification mark is illegible, the block is
to be re-tested and certified.
|
|
|
|
|
|
| 7.
|
Shackles,
links, rings, hooks, triangle plates, etc.
|
(a)
|
Check that
loose gear items can be identified against appropriate certificates (LA.3 or
equivalent).
|
|
|
|
(b)
|
Examine
under proper conditions and check for cracks, deformation, wear, wastage or
other defects. Items are to be free from paint, grease, scale, etc.
|
|
|
|
(c)
|
Confirm
that the material is recorded on the test certificate. The certificate
should distinguish between mild steel, higher tensile steel and alloy
steel.
|
|
|
|
(d)
|
Deformed
shackles or shackle pins shall be replaced.
|
|
|
|
(e)
|
If the
shackle pin is renewed, the whole shackle is to be re-tested and
certified.
|
|
|
|
|
|
| 8.
|
Wire
ropes
|
(a)
|
Confirm
that appropriate wire ropes certificates are on board (LA.4 or
equivalent).
|
|
|
|
(b)
|
Check the
general condition of ropes by examining as much of their length as is
possible.
|
|
|
|
(c)
|
Check for
broken or worn wires. Check for any signs of internal and external
corrosion. Check for changes in rope diameter. Check for signs of any
deformation (e.g. kinks, birdcaging, etc.), or of thermal damage. In
general, the rope is to be replaced immediately if any of the discard
criteria in ISO 4309 are exceeded.
|
|
|
|
(d)
|
Inspect
rope terminations, splices, end fittings, etc. with particular attention to
broken wires at ferrule connections. Any serving on splices is to be removed
for the examination.
|
|
|
|
(e)
|
Liverpool
splices are to be rejected on any rope where the ends are not secured
against rotation.
|
|
|
|
(f)
|
Before
re-rigging ensure that the wire rope has been lubricated.
|
|
|
|
|
|
| 9.
|
Natural and
man-made fibre ropes
|
(a)
|
Confirm
that appropriate fibre ropes certificates are on board (LA.5 or
equivalent).
|
|
|
|
(b)
|
Survey
condition of rope.
|
|
|
|
(c)
|
Check for
external chafe and cutting and for internal wear between the
strands.
|
|
|
|
(d)
|
Check for
local or general deterioration of natural fibre ropes due to mildew or
rot.
|
|
|
|
(e)
|
Check ropes
for chemical attack or other contamination.
|
|
|
|
|
|
| 10.
|
Chains
|
(a)
|
Confirm
that appropriate chain certificates are on board (LA.3 or
equivalent).
|
|
|
|
(b)
|
The chain
is to be taken to a suitably equipped workshop for examination and examined
after removal of paint, grease, scale, etc. and wire brushing.
|
|
|
|
(c)
|
Check for
deformation, wear or other defects. If links require renewal, the chain is
to be suitably heat-treated and re-tested. Replacement links are to be of
equivalent material and strength to the original.
|
|
|
|
(d)
|
Confirm
that the material is recorded on the test certificate. The certificate
should distinguish between mild steel, higher tensile steel and alloy
steel.
|
|
|
|
|
|
| 11.
|
Re-testing
|
(a)
|
Loose gear
is to be proof tested if repairs have been carried out which affect its
strength or if certificates are not available.
|
|
|
|
(b)
|
Re-testing
of the derrick is necessary at 5-yearly intervals, and after repairs have
been carried out affecting its strength or otherwise as required by the
Surveyors.
|
|
|
|
(c)
|
If a
component part of the derrick, such as a derrick heel pin, has been
replaced, re-testing is not called for if the component has been tested
individually to the resultant load which would have been imposed upon it if
it had been tested in situ.
|
|
|
|
(d)
|
Where the
repaired or renewed item has not been tested, the derrick is to be
re-tested.
|
|
|
|
(e)
|
The test is
also to demonstrate the effectiveness of limit switches, etc.
|
|
|
|
|
|
| 12.
|
Masts,
derrick posts, guy posts, etc. and structure in way
|
The Periodical Survey requirements for classification are to be
complied with, see
Pt 1, Ch 3 Periodical Survey Regulations of the Rules and Regulations for the Classification of Ships, July 2022.
|
Table 12.3.6 Annual Thorough Examination of
cranes (incuding derrick cranes) and launch and recovery systems for diving
operations
| Item
|
Survey
|
| General notes
|
These requirements should, in general, also be
applied to derrick cranes.
The thorough examination shall take into
account the designer’s/manufacturer’s maintenance and inspection
instructions and recommendations.
|
| 1.
|
Certification
|
(a)
|
Check that certification,
in the form of a Register of Ship’s Lifting Appliances and Cargo Handling
Gear or Cargo Gear Register Book issued by a competent body, or equivalent
for offshore cranes, exists for the lifting appliances to be
examined.
|
|
|
|
(b)
|
Check the
Register for any outstanding endorsements, recurring problems, down-ratings,
etc.
|
|
|
|
If there is no evidence that the appliances have ever
been certified, the thorough examination is to be declined and LR’s
certification services for existing appliances may be offered.
|
|
|
|
(c)
|
Check the
Register for any repairs or modifications.
|
|
|
|
(d)
|
Check the
maintenance records.
|
|
|
|
|
|
| 2.
|
Arrangements
|
Check reeving arrangement and hoist block assembly are
as shown in Cargo Gear Particulars Book, Rigging Plan, or Manufacturer’s
Manual. Check that the arrangement of hydraulic cylinders (if applicable) is
as shown on the reeving diagram or appropriate plans.
|
|
|
|
|
|
| 3.
|
Fixed
sheaves, blocks, axle pins and housings
|
(a)
|
Determine
that the sheaves are free from cracks. The extent of the examination is to
be such that a reliable judgement can be made. Depending on access, it may
be necessary to dismantle the item.
|
|
|
|
(b)
|
Survey rope
groove for scoring or uneven wear.
|
|
|
|
(c)
|
Check that
lubrication arrangements are in working order.
|
|
|
|
(d)
|
Check
security (keep plates, cotter pins, etc.) of fixed axle pins.
|
|
|
|
(e)
|
Check for
free rotation of sheave on axle pin.
|
|
|
|
(f)
|
Check for
excessive wear of axle pin and sheave bush.
|
|
|
|
(g)
|
Check
condition of housing and separation plates and for signs of ovality in the
pin holes.
|
|
|
|
|
|
| 4.
|
Jib heel
pins
|
(a)
|
Check
lubrication for detrimental wear.
|
|
|
|
(b)
|
Check
security (keep plates, cotter pins, castle nuts, etc.) of heel pins.
|
|
|
|
|
|
| 5.
|
Slewing
rings for cranes on ships
|
(a)
|
Listen to
the bearing during slewing motion for any untoward noises. Also note the age
of the bearing or its operational hours (if possible) and check against
guidance in manufacturer’s maintenance manual. Older bearings will be more
prone to problems
|
|
|
|
(b)
|
Check any
maintenance records for evidence of regular routine maintenance
|
|
|
|
(c)
|
Check
condition and tightness (using a method recommended by the manufacturer) of
all inner and outer bearing bolts, removing any protective caps if fitted.
Sample bolts may be removed at the discretion of the Surveyor to check for
the possibility of stress corrosion cracking.
|
|
|
|
(d)
|
Review the
results of the latest rocking test measurements or grease sample analysis
carried out in accordance with the manufacturer’s recommendations and check
the recommended limits for either wear or metallic particle content are not
being exceeded. This will give an indication of the wear in the bearing.
These tests are usually carried out annually.
|
|
|
|
(e)
|
Check the
effectiveness of lubrication of the bearing.
|
|
|
|
(f)
|
Additional
inspections are to be carried out where these are specified by the crane or
slew ring manufacturer.
|
|
|
|
(g)
|
Any
requirements of the National Authority (i.e. Flag State) are required to be
complied with.
|
|
|
|
|
|
| 6.
|
Slewing
rings for cranes on offshore installations
|
Slew bearings used on offshore cranes in some jurisdictions
(including the North Sea) should either be subject to periodic removal,
strip-down and examination or be subjected to a system of in situ
condition monitoring. Both possibilities are to be agreed with a
competent person (CP).
The period between removal and examination is to be agreed
with the competent person and will depend on the type of bearing fitted.
The minimum is usually every three years for basic bearings where no
securing device (retainers which would prevent the crane from toppling
off its pedestal in the event of a complete bearing failure) is fitted
and which have no condition monitoring system fitted.
Upon removal of the bearing, the extent of the examination
is to be agreed with the competent person.
However, LR would expect the following to be included, as a
minimum:
|
|
|
|
(a)
|
Examination
of the raceway surfaces.
|
|
|
|
(b)
|
Most
bearings have hardened raceway surfaces and NDE through the whole depth of
the softer core of the raceway is required to detect any internal flaws that
could jeopardise the integrity of the bearing, including detachment of the
hardened surface.
|
|
|
|
(c)
|
Examination
of safety critical areas, e.g. the corner radii of the nibs on the internal
raceway or on the flanges of the external raceway.
|
|
|
|
(d)
|
Examination
of the condition of the rolling elements, their cages and seals.
|
|
|
|
(e)
|
Examination
of the condition of the fasteners. These will generally be ISO 898/1 grade
8.8 or 10.9 fasteners.
|
|
|
|
|
NOTE
Grade 12.9 fasteners are not usually permitted
offshore.
|
|
|
|
(f)
|
Condition
of any retaining device fitted
|
|
|
|
Any refurbishment or repair must be done with the agreement
of the bearing manufacturer and the competent person. The bearing is not
to be replaced on the crane until a reassembly certificate has been
issued by the competent person
.
If, in the opinion of the competent person, the original
strength and capacity of the bearing has been compromised, the bearing is
not to be put back into service.
|
|
|
|
Condition Monitoring Systems. Where condition monitoring systems are
used in lieu of periodic removal and examination of slew bearings, they are
to consist of the following four key elements:
|
|
|
|
•
|
Grease
sampling. Samples of grease are to be taken from several dedicated points on
the ring (usually from four places at 90° apart) each year (or as determined
by the CP). The samples are to be analysed by a suitably qualified
laboratory for metallic and water content and the results passed to the
CP.
|
|
|
|
•
|
Rocking
tests are to be carried out by a qualified person in accordance with the
crane manufacturer’s recommendation to monitor the wear in the races and to
check that they are within the limits prescribed by the crane
manufacturer.
|
|
|
|
•
|
Load
history of the crane. The load history (history of lifts and radii) is to be
recorded by an approved data logger generally linked through the crane’s
Safe Load Indicator (SLI). This will show if the crane is working at mostly
full or reduced capacity in its service
|
|
|
|
•
|
Fastener
Checks. The condition of the bolts or studs, together with a check on their
torques, and replacement history is to be recorded. The frequency of these
is to be agreed with the CP.
|
|
|
|
The competent person is to review the results of all of the
above and decide whether the slew bearing is fit to continue in service,
or whether a more detailed examination is required or if replacement is
necessary.
Other jurisdictions may have other requirements and these are
to be followed as appropriate, but the requirements for ship crane slew
bearings in (5) above are to be followed as a minimum.
Any requirements of the National Authority (i.e. Flag State) and/or
Coastal State Authorities are required to be complied with.
|
|
|
|
|
|
| 7.
|
Wire
ropes
|
(a)
|
Confirm that
appropriate wire ropes certificates are on board (LA.4 or
equivalent).
|
|
|
|
(b)
|
Check the
general condition of ropes by examining as much of their length as is
possible.
|
|
|
|
(c)
|
Check for
broken or worn wires. Check for any signs of internal and external
corrosion. Check for changes in rope diameter. Check for signs of any
deformation (e.g. kinks, birdcaging, etc.), or of thermal damage. In
general, the rope is to be replaced immediately, if any of the discard
criteria in ISO 4309 are exceeded.
|
|
|
|
(d)
|
Inspect rope
terminations, splices, end fittings, etc. with particular attention to
broken wires at ferrule connections. Any serving on splices is to be removed
for the examination.
|
|
|
|
(e)
|
Liverpool
splices are to be rejected on any rope where the ends are not secured
against rotation.
|
|
|
|
(f)
|
Before
re-rigging ensure that the wire rope has been lubricated.
|
|
|
|
|
|
| 8.
|
Structure
and general
|
(a)
|
Check
structural bolts for tightness. Where bolts have been replaced, they are to
be of the same type, size and quality as previously fitted
|
|
|
|
(b)
|
Check
pedestal and foundation bolts for signs of corrosion and flange
distortion.
|
|
|
|
(c)
|
Check main
welds for cracks. Initially by visual examination but NDE can be used at the
Surveyor’s discretion.
|
|
|
|
(d)
|
Check welds
between the pedestal/foundation and the ship. Initially by visual
examination but NDE can be used at the Surveyor’s discretion.
|
|
|
|
(e)
|
Inspect the
structure for condition of coating. Inspect the structure for corrosion,
removing paint and carrying out hammer tests as necessary. If considered
necessary, the thickness of structural items is to be checked by ultrasonic
testing or other suitable methods that do not affect the material or the
condition of the strucuture.
|
|
|
|
(f)
|
Check jib,
tower, support pedestal, gantry, etc. for any signs of local indentations,
buckling, cracks or unfairness. Particular attention is to be given to
connections of jib chords and transverses, hydraulic cylinder connections,
sheave housing attachments, jib heel brackets and other areas where there is
significant load input.
|
|
|
|
(g)
|
In the case
of travelling cranes, check rails, stops and stowage arrangements.
|
|
|
|
(h)
|
Check jibs
in way of their stowage crutched for signs of wear and indentations.
|
|
|
|
|
|
| 9.
|
Shackles,
links, rings, hooks, etc.
|
(a)
|
Check loose
gear items, including hook blocks, can be identified against appropriate
hooks, etc. certificates (LA.3 or equivalent).
|
|
|
|
(b)
|
Examine
under proper conditions and check for cracks, deformation, wear, wastage or
other defects. Items are to be free from paint, grease, scale, etc.
|
|
|
|
(c)
|
Confirm
that the material is recorded on the test certificate. The certificate
should distinguish between mild steel, higher tensile steel and alloy
steel.
|
|
|
|
(d)
|
Deformed
shackles or shackle pins shall be replaced.
|
|
|
|
(e)
|
If the
shackle pin is renewed, the whole shackle is to be re-tested and
certified.
|
|
|
|
|
|
| 10.
|
Chains
|
(a)
|
Confirm that
appropriate chain certificates are on board (LA.3 or equivalent).
|
|
|
|
(b)
|
The chain is
to be taken to a suitably equipped workshop for examination and examined
after removal of paint, grease, scale, etc. and wire brushing.
|
|
|
|
(c)
|
Check for
deformation, wear or other defects. If links require renewal, the chain is
to be suitably heat-treated and re-tested. Replacement links are to be of
equivalent material and strength to the original.
|
|
|
|
(d)
|
Confirm
that material is recorded on test certificate. The certificate should
distinguish between mild steel, higher tensile steel and alloy steel
|
|
|
|
|
|
| 11.
|
Rope
drums
|
(a)
|
At least
three turns of wire rope are to remain on the drum in all operating
positions, including in the case of luffing ropes, when the jib is
‘crutched’.
|
|
|
|
(b)
|
Check the
effectiveness of wire rope anchorages.
|
|
|
|
(c)
|
Check drum
for cracks and for defects liable to damage the rope.
|
|
|
|
(d)
|
Check the
effective working of any fleeting device fitted.
|
|
|
|
(e)
|
Check drum
flanges for bending or distortion. This is particularly appropriate for
multi-layer spooling drums.
|
|
|
|
|
|
| 12.
|
Hydraulic
arrangements
|
(a)
|
Check
hydraulic hoses, pipes, couplings, actuators, filters, valves, measuring
devices, control blocks and other hydraulic components for leakage and/or
damage.
|
|
|
|
(b)
|
Check
hydraulic pumps and motors for leakage and/or damage.
|
|
|
|
(c)
|
Check
hydraulic accumulators for leakage, deformation and/or other damage.
|
|
|
|
(d)
|
Check
pre-fill pressure of the hydrogen bottles, as applicable.
|
|
|
|
(e)
|
Check for
correct oil levels.
|
|
|
|
|
|
| 13.
|
Hydraulic
cylinders, winches, etc. and attachments
|
(a)
|
Check
condition of machinery systems.
|
|
|
|
(b)
|
Check for
leaks and condition of hydraulic pipes and couplings.
|
|
|
|
(c)
|
Check
piston rod for scoring and signs of deformation.
|
|
|
|
(d)
|
Check end
pivot pins and bearings for any excessive wear and deformation, and the
security of the pins.
|
|
|
|
(e)
|
Check that
mounting brackets are free from deformation, cracks or damage.
|
|
|
|
(f)
|
Check
safety systems, such as limit switches and slack rope detection
systems.
|
|
|
|
(g)
|
Check
fasteners, pins, gear boxes, shafts, bearings, lubrication, etc.
|
|
|
|
(h)
|
Check
condition of brake (e.g. pads, brake linings).
|
|
|
|
|
|
| 14
|
Electrical
and control arrangements
|
(a)
|
Check the
operator station and other operating arrangements for suitable
condition.
|
|
|
|
(b)
|
Check
operation of audible and visual warnings (as applicable).
|
|
|
|
(c)
|
Check
electrical arrangements in general and cabling for state and secure
connection.
|
|
|
|
(d)
|
Check
effectiveness of limit switches.
|
|
|
|
(e)
|
Check
condition of electric motors (as applicable).
|
|
|
|
(f)
|
Check for
safe operational behaviour as required by the instructions for use.
|
|
|
|
(g)
|
Conduct
earthing test, e.g. megger test.
|
|
|
|
|
|
| 15.
|
Re-testing
|
(a)
|
Loose gear
is to be proof tested if repairs have been carried out which affect its
strength or if certificates are not available.
|
|
|
|
(b)
|
Re-testing
of the crane is necessary at 5-yearly intervals and after repairs or
modifications have been carried out affecting the strength or otherwise as
required by the Surveyors. The test is to demonstrate satisfactory
operation, efficiency of overload and weightload indicators, effectiveness
of limit switches, etc.
|
|
|
|
(c)
|
It is
essential that the crane is operated at each survey to check hoist, slewing,
luffing and travel motions, and the operation of limit switches for
over-hoisting, over-lowering, luffing, slewing and travel.
|
|
|
|
(d)
|
Lifting
appliances used for raising, lowering or transferring manned submersibles
are to be re-tested annually and also following any structural repairs,
alteration or re-erection of the appliance.
|
|
|
|
(e)
|
Lifting appliances used for raising,
lowering or transferring manned bells or submarines are to be re-tested
annually and also following any structural repairs, alteration or
re-erection of the appliance.
|
Table 12.3.7 Annual Thorough Examination of
cargo lifts and ramps
| Item
|
Survey
|
|
|
General
note
|
|
The thorough examination
shall take into account the designer’s/manufacturer’s maintenance and
inspection instructions and recommendations.
|
| 1.
|
Certification
|
(a)
|
Check that
certification, in the form of a Register of Ship’s Lifting Appliances and
Cargo Handling Gear or Cargo Gear Register Book issued by a competent body,
exists for the lifts and ramps to be examined.
|
|
|
|
(b)
|
Check the
Register for any outstanding endorsements, recurring problems, down-ratings,
etc.
|
|
|
|
If there is no evidence that the lifts or ramps have
ever been certified, the thorough examination is to be declined and LR’s
certification services for existing appliances may be offered.
|
|
|
|
(c)
|
Check the
Register for any repairs or modifications.
|
|
|
|
(d)
|
Check the
maintenance records.
|
|
|
|
|
|
| 2.
|
Arrangements
|
Check that the reeving of wire ropes, chains or the
arrangement of hydraulic cylinders is as shown on the reeving diagram or
appropriate plans. Check marking on ramps of lifts with respect to the
ship's loading booklet and the Register of Ship's Lifting Appliances and
Cargo Handling Gear.
|
|
|
|
|
|
| 3.
|
Sheaves,
sprockets, guide rollers, axle pins and bearings, etc.
|
(a)
|
Determine
that sheaves, sprockets and guide rollers, etc. are free from cracks or
scores and that they are free to rotate.
|
|
|
|
(b)
|
Survey rope
grooves for scoring or uneven wear, and sprockets for signs of abnormal
wear, hooking, etc.
|
|
|
|
(c)
|
Check that
lubrication arrangements are in working order.
|
|
|
|
(d)
|
Check axle
pins and bearings with regard to deformation and excessive wear, and the
security of the pins.
|
|
|
|
|
|
| 4.
|
Wire
ropes
|
(a)
|
Confirm that
appropriate wire ropes certificates are on board (LA.4 or
equivalent).
|
|
|
|
(b)
|
Check the
general condition of ropes by examining as much of their length as is
possible
|
|
|
|
(c)
|
Check for
broken or worn wires. Check for any signs of internal and external
corrosion. Check for changes in rope diameter. Check for signs of any
deformation (e.g. kinks, birdcaging, etc.), or of thermal damage. In
general, the rope is to be replaced immediately, if any of the discard
criteria in ISO 4309 are exceeded.
|
|
|
|
(d)
|
Inspect
rope terminations, splices, end fittings, etc. with particular attention to
broken wires at ferrule connections. Any serving on splices is to be removed
for the examination.
|
|
|
|
(e)
|
Before
re-rigging ensure that the wire rope has been lubricated.
|
|
|
|
|
|
| 5.
|
Chains
|
(a)
|
Confirm that
appropriate chain certificates are on board (LA.3 or equivalent).
|
|
|
|
(b)
|
Inspect the
chain, which is to be sufficiently free from grease and scale, etc. to
enable a satisfactory examination to be made.
|
|
|
|
(c)
|
Check for
deformation, wear or other defects. If links require renewal, the chain is
to be suitably heat-treated and re-tested. Replaced links are to be of
equivalent material and strength to the original.
|
|
|
|
(d)
|
Confirm that
material is recorded on the test certificate. The certificate should
distinguish between mild steel, higher tensile steel and alloy
steel.
|
|
|
|
|
|
| 6.
|
Hydraulic
cylinders, winches, etc. and attachments
|
(a)
|
Check
condition of machinery systems.
|
|
|
|
(b)
|
Check for
leaks and check condition of hydraulic pipes.
|
|
|
|
(c)
|
Check
piston rods, pivot pins and bearings, etc. for excessive wear and
deformation.
|
|
|
|
(d)
|
Determine
that sheaves are free from cracks, scores, or uneven wear and they are free
to rotate.
|
|
|
|
(e)
|
Check that
mounting brackets are free from deformation, cracks or damage.
|
|
|
|
(f)
|
Check
systems, such as limit switches and slack rope detection systems.
|
|
|
|
(g)
|
Check
fasteners, pins, gear boxes, shafts, bearings, lubrication, etc.
|
|
|
|
(h)
|
Check
condition of brake (e.g. pads, brake linings).
|
|
|
|
|
|
| 7.
|
Main
pivots, articulations, slewing bearings (if fitted), etc.
|
(a)
|
Check that
main pivots and bearings are free from excessive play.
|
|
|
|
(b)
|
Check that
bearing surfaces are free from scoring, pitting, etc.
|
|
|
|
(c)
|
Check that
pivot pins do not have excessive wear or deformation, and the security of
the pins is sound.
|
|
|
|
(d)
|
Check that
lubrication arrangements are in working order.
|
|
|
|
|
|
| 8.
|
Structure
and general
|
(a)
|
Check
structural bolts for tightness. Where bolts have been replaced, they are to
be of the same type, size and quality as previously fitted.
|
|
|
|
(b)
|
Check main
welds for cracks. Initially by visual examination but NDE can be used at the
Surveyor’s discretion.
|
|
|
|
(c)
|
Inspect the
structure for condition of coating. Inspect load bearing structure for
corrosion, removing paint and carrying out hammer tests as necessary. If
considered necessary, the thickness of structural items is to be checked by
ultrasonic testing or other suitable methods that do not affect the material
or condition of the structure.
|
|
|
|
(d)
|
Check load
bearing plating and main structural members for cracks and any signs of
local indentation, buckling or unfairness.
|
|
|
|
(e)
|
Check
structure in way of any stowage locks for wastage, cracks, deformation,
etc.
|
|
|
|
|
|
| 9.
|
Shackles,
links, etc.
|
(a)
|
Check loose
gear items can be identified against appropriate certificates (LA.3 or
equivalent).
|
|
|
|
(b)
|
Check for
cracks, deformation, wear, wastage or other defects. Items are to be free
from paint, grease, scale, etc.
|
|
|
|
(c)
|
Confirm that
the material is recorded on the test certificate. The certificate is to
distinguish between mild steel, higher tensile steel and alloy
steel.
|
|
|
|
(d)
|
Deformed
shackles or shackle pins shall be replaced.
|
|
|
|
(e)
|
If the
shackle pin is renewed, the whole shackle is to be re-tested and
certified.
|
|
|
|
|
|
| 10.
|
Rope
drums
|
(a)
|
At least
three turns of wire rope are to remain on the drum in operating
positions.
|
|
|
|
(b)
|
Check the
effectiveness of wire rope anchorages.
|
|
|
|
(c)
|
Check drum
for cracks and for defects liable to damage the rope.
|
|
|
|
(d)
|
Check the
effective working of any fleeting device fitted.
|
|
|
|
(e)
|
Check drum
flanges for bending or distortion. This is particularly appropriate for
multi-layer spooling drums.
|
|
|
|
|
|
| 11.
|
Hydraulic
arrangements
|
(a)
|
Check
hydraulic hoses, pipes, couplings, actuators, filters, valves, measuring
devices, control blocks and other hydraulic components for leakage and/or
damage.
|
|
|
|
(b)
|
Check
hydraulic pumps and motors for leakage and/or damage.
|
|
|
|
(c)
|
Check
hydraulic accumulators for leakage, deformation and/or other damage.
|
|
|
|
(d)
|
Check
pre-fill pressure of the hydrogen bottles, as applicable.
|
|
|
|
(e)
|
Check for
correct oil levels.
|
|
|
|
|
|
| 12.
|
Operating
locks, stowage locks, safety guards, etc.
|
(a)
|
Check that
operating locks, safety guards and stowage locks operate
effectively.
|
|
|
|
(b)
|
Check
locking pins on latches, etc. and their respective location bearing parts
for abnormal wear or deformation.
|
|
|
|
(c)
|
Ensure that
hydraulic actuating cylinders, etc. are free from leaks, wear and abnormal
deformation.
|
|
|
|
(d)
|
Ensure that
mounting brackets, etc. are effective and securely attached to the ship or
lift structure.
|
|
|
|
|
|
| 13.
|
Guides
|
(a)
|
Check that
the guides do not have excessive wear or deformation and that joints are
secure.
|
|
|
|
(b)
|
Check that
brackets attaching guides to ship structure are effective and in good
order.
|
|
|
|
|
|
| 14.
|
Seals
|
Where weathertight seals are fitted, their general
condition is to be satisfactory and their effectiveness is to be checked
using a water spray test or other suitable method.
|
|
|
|
|
|
| 15.
|
Electrical
and control arrangements
|
(a)
|
Check the
operator station and other operating arrangements for suitable
condition.
|
|
|
|
(b)
|
Check
operation of audible and visual warnings (as applicable).
|
|
|
|
(c)
|
Check
electrical arrangements in general and cabling for state and secure
connection.
|
|
|
|
(d)
|
Check
effectiveness limit of switches.
|
|
|
|
(e)
|
Check
condition of electric motors (as applicable).
|
|
|
|
(f)
|
Check for
safe operational behaviour as required by the instructions for use.
|
|
|
|
(g)
|
Conduct
earthing test, e.g. megger test.
|
|
|
|
|
|
| 16.
|
Re-test
|
(a)
|
Re-testing
of the lift or ramp is necessary at 5-yearly intervals, or as required by
the National Authority, and when modifications and repairs have been carried
out affecting the strength or as required by the Surveyor.
|
|
|
|
(b)
|
It is
essential that the lift or ramp is operated at each thorough examination
throughout the full operational range for each mode of operation and to
check that the limit switches, interlocks, guards and safety devices operate
satisfactorily.
|
3.4.3 In carrying
out the thorough examination of the installation, parts which are
found to be worn or corroded to a significant degree are to be replaced
or repaired as appropriate. For guidance purposes, generally acceptable
levels of weardown are given in Table 12.3.4 Limits of weardown and
corrosion, but earlier repair may be required where the circumstances
warrant such action.
3.4.4 When no certification
at all can be produced for the lifting appliances to be examined the
periodical thorough examination is to be declined. However, certification
can be issued subject to the procedures in Ch 12, 3.3 Initial Survey of existing installations being
satisfactorily completed.
3.4.5 The detailed
requirements for survey of lifting appliances and associated loose
gear are given in the following Tables:
Table 12.3.8 Annual Thorough Examination of
passenger lifts
| Item
|
Survey
|
|
|
General
note
|
|
The thorough examination
shall take into account the designer’s/manufacturer’s maintenance and
inspection instructions and recommendations.
|
| 1.
|
Certification
|
(a)
|
Check that certification,
in the form of a Register of Ship’s Lifting Appliances and Cargo Handling
Gear or Cargo Gear Register Book or national forms issued by a competent
body, exists for the passenger lifts to be examined.
|
|
|
|
(b)
|
Check the
Register for any outstanding endorsements, recurring problems, down-ratings,
etc.
|
|
|
|
If there is no evidence that the lifts have ever been
certified, the thorough examination is to be declined and LR’s certification
services for existing appliances may be offered.
|
|
|
|
(c)
|
Check the
Register for any repairs or modifications.
|
|
|
|
(d)
|
Check the
maintenance records.
|
|
|
|
|
|
| 2.
|
Arrangements
|
(a)
|
Check that the reeving of wire ropes
and chains and the arrangement of hydraulic cylinders are as shown on the
appropriate plans.
|
|
|
|
(b)
|
Check that the plate
indicating the allowable load mounted inside the lift is in agreement with
the appropriate plan(s) and as indicated in the Register of Ship’s Lifting
Appliances and Cargo Handling Gear.
|
|
|
|
|
|
| 3.
|
Sheaves,
sprockets, guide rollers, axle pins and bearings, etc.
|
(a)
|
Determine
that sheaves, sprockets and guide rollers, etc. are free from cracks or
scores and that they are free to rotate.
|
|
|
|
(b)
|
Survey rope
grooves for scoring or uneven wear. Survey sprockets for signs of abnormal
wear, hooking, etc.
|
|
|
|
(c)
|
Check that
lubrication arrangements are in working order.
|
|
|
|
(d)
|
Check axle
pins and bearings with regard to deformation and excessive wear, and the
security of the pins.
|
|
|
|
|
|
| 4.
|
Wire
ropes
|
(a)
|
Confirm
that appropriate wire ropes certificates are on board (LA.4 or
equivalent).
|
|
|
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(b)
|
Check the
general condition of ropes by examining as much of their length as is
possible
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(c)
|
Check for
broken or worn wires. Check for any signs of internal and external
corrosion. Check for changes in rope diameter. Check for signs of any
deformation (e.g. kinks, birdcaging, etc.), or of thermal damage. In
general, the rope is to be replaced immediately if any of the discard
criteria in ISO 4309 are exceeded.
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(d)
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Inspect all
rope terminations, splices, end fittings, etc. with particular attention to
broken wires at ferrule connections. Any serving on splices is to be removed
for the examination.
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(e)
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Before
re-rigging ensure that the wire rope has been lubricated.
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| 5.
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Chains
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(a)
|
Confirm
that appropriate chain certificates are on board (LA.3 or
equivalent).
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|
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(b)
|
Inspect the
chain, which is to be sufficiently free from grease and scale, etc. to
enable a satisfactory examination to be made.
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|
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(c)
|
Check for
deformation, wear or other defects. If links require renewal, the chain is
to be suitably heat-treated and re-tested. Replaced links are to be of
equivalent material and strength to the original.
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(d)
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Confirm
that the material is recorded on the test certificate. The certificate
should distinguish between mild steel, higher tensile steel and alloy
steel.
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| 6.
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Hydraulic
arrangements
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(a)
|
Check
hydraulic hoses, pipes, couplings, actuators, filters, valves, measuring
devices, control blocks and other hydraulic components for leakage and/or
damage.
|
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|
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(b)
|
Check
hydraulic pumps and motors for leakage and/or damage.
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(c)
|
Check
hydraulic accumulators for leakage, deformation and/or other damage.
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(d)
|
Check
pre-fill pressure of the hydrogen bottles, as applicable.
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(e)
|
Check for
correct oil levels.
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| 7.
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Hydraulic
cylinders, winches, etc. and attachments
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(a)
|
Check
condition of machinery systems.
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(b)
|
Check for
leaks and check condition of hydraulic pipes.
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|
|
|
(c)
|
Check piston
rods, pivot pins and bearings, etc. for excessive wear and
deformation.
|
|
|
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(d)
|
Determine
that sheaves are free from cracks, scores and uneven wear and that they are
free to rotate.
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(e)
|
Check that
mounting brackets are free from deformation, cracks and damage.
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|
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(f)
|
Check
fasteners, pins, gear boxes, shafts, bearings, lubrication, etc.
|
|
|
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|
|
| 8.
|
Landing and
car doors
|
(a)
|
Check that
the landing and car doors operate satisfactorily.
|
|
|
|
(b)
|
Check that
interlocks on the doors operate effectively.
|
|
|
|
(c)
|
Inspect the
door and check that its fire-resisting capacity is unimpaired.
|
|
|
|
|
|
| 9.
|
Car and
counterweight
|
(a)
|
Examine the
car and counterweight for damage which could affect their operating
efficiency or carrying capacity.
|
|
|
|
(b)
|
Check that
brackets for sheaves, guide rollers, wire terminations, etc. are secure and
in good order.
|
|
|
|
(c)
|
Inspect the
car, including the car frame, and check that the fire-resisting capacity of
the car is unimpaired.
|
|
|
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|
|
| 10.
|
Lift trunk
and well
|
(a)
|
Check that
the lift trunk and well are free from debris or damage which could impair
the satisfactory operation of the lift.
|
|
|
|
(b)
|
Check that
trunk has not been damaged, is suitably ventilated and is totally enclosed
such as to prevent passage of smoke and flame from one deck to
another.
|
|
|
|
|
|
| 11.
|
Guides and
buffers
|
(a)
|
Check that
the car and counterweight guides are not worn or distorted and that the
joint plates are secure
|
|
|
|
(b)
|
Check that
the brackets attaching guides to the trunk are in good order
|
|
|
|
(c)
|
Check that
buffers are in good order and supports are sound
|
|
|
|
|
|
| 12.
|
Over-running devices and brakes
|
Check that over-running devices and brakes (e.g. pads,
brake linings) are operating satisfactorily and are in good order.
|
|
|
|
|
|
| 13.
|
Safety
gear
|
Check that the safety gear for preventing the car from
falling is secure and in good order. A test of the safety gear is to be
carried out to demonstrate its effectiveness.
|
|
|
|
|
|
| 14.
|
Safety
equipment
|
(a)
|
Check that escape hatches, ladders,
etc. are free from obstruction and in good order.
|
|
|
|
(b)
|
Check that the emergency
telephone and warning system operate satisfactorily.
|
|
|
|
(c)
|
Check that warning
notices, etc. are legible and secure.
|
|
|
|
|
|
| 15.
|
Electrical
and control arrangements
|
(a)
|
Check
operation of audible and visual warnings (as applicable).
|
|
|
|
(b)
|
Check
electrical arrangements in general and cabling for state and secure
connection
|
|
|
|
(c)
|
Check
effectiveness of limit switches (as applicable).
|
|
|
|
(d)
|
Check
condition of electric motors (as applicable).
|
|
|
|
(e)
|
Check for
safe operational behaviour as required by the instructions for use.
|
|
|
|
(f)
|
Conduct
earthing test, e.g. megger test.
|
|
|
|
|
|
| 16.
|
Re-test
|
(a)
|
Re-testing
is necessary at 5-yearly intervals, or as required by the National
Authority, and when modifications and repairs have been carried out
affecting the strength, or as required by the Surveyor.
|
|
|
|
(b)
|
It is
essential that the lift is operated at each annual thorough examination to
check that the limit switches, interlocks, and safety devices operate
satisfactorily.
|
3.4.6 In determining
the extent of the examination or dismantling, due regard is to be
given to the standard of maintenance, state of lubrication and degree
of use of the appliance.
3.5 Deferment of surveys
3.5.1 Where requested
by the Owner, LR is willing to carry out a General Examination of
the lifting appliances with a view to deferment of the Thorough Examination,
provided:
-
Agreement to the proposed
deferment is granted by the National Authority of the Flag State of
the ship. Certain national authorities have authorised LR to grant
deferments without seeking specific agreement on each occasion.
-
The certification is
valid, up to date and issued by a competent authority.
3.5.2 The General
Examination is to take the form of a visual inspection of the lifting
appliances, but the Surveyor may at his discretion require components
to be dismantled for more thorough inspection where considered necessary.
3.5.3 Many national
authorities do not permit the deferment of Annual Thorough Examinations.
Where permitted, it will be for no more than two months. This may
also be unacceptable to some port authorities.
3.5.4 Such deferments
will not extend the due dates of subsequent Periodical Surveys.
3.5.5 The deferment
of the load test required every five years is not permitted.
3.5.6 Any aspects
of the installation which are not considered suitable to continue
in use during the period of deferment are to be noted in the endorsement
to the Register of Ship’s Lifting Appliances and Cargo
Handling Gear (LA.1).
3.5.7 Following
inspection of the lifting appliances and the Register of Ship’s
Lifting Appliances and Cargo Handling Gear (LA.1), a factual
report is to be issued and this is to include a statement, where applicable,
of the authority for granting the deferment.
3.6 Damage surveys
3.6.1 The stated
cause of the damage is to be reported, together with details of the
proposed repair and the extent of repair and re-testing actually carried
out at the time. Where it is not possible to carry out, or to complete,
the repair at the time, a suitable entry is to be made in the Register
of Ship’s Lifting Appliances and Cargo Handling Gear (LA.1) that
the equipment is not to be used until satisfactory repairs and tests
are completed.
3.6.2 Replacement
items of loose gear are to be accompanied by a manufacturer’s
certificate or be tested, marked and certified (LA.3) by the Surveyor.
3.6.3 Replacement
ropes are to be accompanied by a manufacturer’s certificate
or be tested, marked and certified (LA.4 or 5) by the Surveyor.
3.6.4 Care is to
be exercised to ensure that the correct materials are used in the
repairs. Reference may need to be made to the relevant plan approval
office for confirmation.
3.6.5 The practice
of allowing a damaged derrick or crane to continue in use at reduced
capacity is not recommended, given the resulting inherent weakness
of the structure and, in the case of a crane jib or derrick boom,
the difficulty of assessing the effect of any indentation or unfairness
upon the load carrying capacity.
3.6.6 Where the
crane or derrick is structurally sound but damage has been sustained
by the hydraulic system, the appliance may be temporarily down-rated
until it can be repaired. In this case, the appliance may lift the
maximum load of which it is capable. This would be considered as the
new test load and the reduced SWL assigned accordingly. The Register
of Ship’s Lifting Appliances and Cargo Handling Gear (LA.1) is
to be endorsed with the reduced capacity and a new LA.2 issued, until
such time as the full capacity is reinstated after repair and test.
3.6.7 The equipment
is to be re-tested in accordance with Ch 12, 1.11 Re-testing after
the repair has been completed and the Register of Ship’s Cargo
Gear and Lifting Appliances endorsed.
3.7 Classification surveys
3.7.2 It is the responsibility of the Owner to ensure that all thorough
examinations necessary for the maintenance of class are carried out at the proper time
and in accordance with the instructions of the Classification Committee. LR make
available to an Owner timely notice about forthcoming periodical thorough examinations
by means of a Quarterly Listing of Surveys by means of computer access via Class
Direct website. The omission of this notice, however, does not absolve the Owner from
his responsibility to comply with LR’s requirements for the maintenance of class.
3.7.3 Periodical
Thorough Examinations for the maintenance of class are to be carried
out by LR’s Surveyors in accordance with Ch 12, 3.4 Periodical Thorough Examinations. Certificates of class maintenance in respect of completed
Periodical Thorough Examinations will be issued to Owners on application.
3.7.4 It should
be noted that the intervals between Periodical Thorough Examinations
of lifting appliances are determined by Statutory Regulations and
deferments cannot exceed those permitted by Ch 12, 3.5 Deferment of surveys.
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