CHECKING AND INSPECTION
SERVICE
REPORT
Company Reg No : 198602637N
ISO 9001:2008 accredited
JOBNO : 20110505
Page 1 of 4
VESSEL:
PORT:MACKAY
DATE:10 May 2011

MAKE: Samsung HATLAPA

EQUIPMENT: STEER GEAR
MODEL:R4ST600
DEFECTS/REASON FOR CALL : Aft Port Cylinder leaking badly after drydock
ITEM
DESCRIPTION
REMARKS
CHECKING AND INSPECTION
With Steer Gear not
running, found no 3 ram
wet with oil slight oil
seeping out.
Seal was renewed in
drydock recently.
1
Discuss risk assessment
with C/E. Proceed to
isolate, lock and
secure all 03 rams
hydraulically to
prevent rudder from
free movement.
2
Checked scoringlines on ram, depth variation highest estimate not more than 0.5
mm.
Page 1 of 4
Authorised HANLA IMS and since 1981 and over 8000 Track Recordsfor Deck Machinery, Steering
Gears, Valve Remote Controls. http://joblist.raycontrol.com
PITTED MARKINGS
SERVICE
raycOntrol pte ltd
REPORT
7 TOH GUAN ROAD EAST #05-07 SINGAPORE
Company Reg No : 198602637N
608599Tel:65630544 Fax:65600941
ISO 9001:2008 accredited
JOBNO : 20110505
sales@raycontrol.com
Page 2 of 4
PITTED MARKINGS
Found some areas
especially the top
there are small pitted
craters marking.
3
It is possible that the
rams are not protected
when some welding or
hot working was going
on nearby previously.
DISMANLTED RAM FLANGE,
CHECKING OF EXSITING
SEAL
Measured a 03mm recess
and found there was no
compression on the seal
4
padking.
Removed top backing
seal, found the 1st
inner roof seal was not
touching the ram.
Residual Oil can be
seen bubbling out.
Page 2 of 4
Authorised HANLA IMS and since 1981 and over 8000 Track Recordsfor Deck Machinery, Steering
Gears, Valve Remote Controls. http://joblist.raycontrol.com
BRONZE GUIDE
SERVICE
raycOntrol pte ltd
REPORT
7 TOH GUAN ROAD EAST #05-07 SINGAPORE
Company Reg No : 198602637N
608599Tel:65630544 Fax:65600941
ISO 9001:2008 accredited
JOBNO : 20110505
sales@raycontrol.com
Page 3 of 4
BRONZE GUIDE
Checked the bronze
guide from the outside.
It was symmentrical
with the ram all round.
5
Visually No gap with
ram found.
Did not notice anything
unsual.
NEW SEALS CHECKING AND
INSTALLATION
Checked packing depth
at ram of 60 mm.
Checked new packing of
61mm (hand hold
6
togther). Checked new
seal condition and
tested elasticity
before installation.
Page 3 of 4
Authorised HANLA IMS and since 1981 and over 8000 Track Recordsfor Deck Machinery, Steering
Gears, Valve Remote Controls. http://joblist.raycontrol.com
SEAL COMPRESSIONCOMPENSATION FOR RAMSCORING
SERVICE
raycOntrol pte ltd
REPORT
7 TOH GUAN ROAD EAST #05-07 SINGAPORE
Company Reg No : 198602637N
608599Tel:65630544 Fax:65600941
ISO 9001:2008 accredited
JOBNO : 20110505
sales@raycontrol.com
Page 4 of 4
SEAL COMPRESSION
COMPENSATION FOR RAM
SCORING
Taking into a
compression of 0.5 mm
for each roof seal.
7
Total compression for
05 Nos roof seal =
2.5mm.
Installed a oil
resistant gasket spacer
of approx 2.5mm over
the packing.
FUNCTION TEST
Lined up circuitry and
remove isolation, Steer
gear lined back for
operation.
8
Carried out swing test
several times.
No leak was found on #3
ram with presence of
Chief Engineer.
CONCLUSION and Probability.
Scoring of ram is external. There are marks of small fine pitted craters probably
formed from residual welding or hotwork that landed on the ram.
2.5mm shim added to provide extra compression. Tested No leak observed.
REPORT BY
Raymond Tan
Specialist Engineer.
Page 4 of 4
Authorised HANLA IMS and since 1981 and over 8000 Track Recordsfor Deck Machinery, Steering
Gears, Valve Remote Controls. http://joblist.raycontrol.com