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Inspection Grading Criteria for the ABS Hull Inspection and Maintenance Program (HIMP)
NOTICE
This manual and the inspection regime described herein are for use solely within the ABS Hull Inspection Maintenance Program (HIMP). The grading and actions to be taken on those gradings are of a suggested nature only. They are not to be construed as representative of ABS class criteria or the actions taken by class upon discovery of the various types of defects noted in this hull inspection grading manual.
Owner inspections carried out utilizing this manual do not replace or substitute the classifi cation survey requirements as stated in IACS PR-33.
IACS PR-33 Owner’s Hull Inspection and Maintenance SchemesOwner’s hull inspection and maintenance schemes are to be encouraged as means for maintaining compliance with classifi cation and statutory requirements between surveys. However, these schemes are not to be accepted as an alternative to, or a substitute for, the performance of required classifi cation and/or statutory surveys of the hull by the surveyors of the society, or of another duly authorized society. The surveyors may be assisted, where appropriate, by service suppliers as defi ned in UR Z17.
INSPECTION GRADING CRITERIA FOR ABS HIMP • 1
Table of Contents
Introduction ............................................................... 2
Inspection Criteria ..................................................... 4
Coating Condition ..................................................... 5
General Corrosion .................................................... 15
Pitting & Grooving Corrosion ................................. 25
Deformation ............................................................. 34
Fracture .................................................................... 43
Cleanliness & Housekeeping ................................... 50
Notifying Superintendent & Class Surveyor............ 59
Point Rating System ................................................. 60
2 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Introduction
This manual should be utilized in accordance with the Hull Inspection and Maintenance Program (HIMP) outlined in the ABS Guide for Hull Inspection and Maintenance Program. Vessels enrolled in the program will be eligible for the HIMP class notation.
This hull inspection grading manual details a program for hull structural inspections to be performed by qualifi ed inspectors in order to comply with the ABS HIMP Guide. It outlines the work scope and reporting requirements for this vessel and contains the information to be collected by the vessel crew or superintendents. Staff executing the HIMP inspection regime are to be formally qualifi ed by successfully completing the ABS approved HIMP training. The hull condition is to be assessed and rated in accordance with a set of six general condition criteria coupled with selected targeted inspections of identifi ed critical areas for this design series.
This manual draws on the information available from IMO, IACS and ABS publications. It is intended to support the sound judgment of qualifi ed inspectors and assist owners with the development and appli-cation of a reliable maintenance program based on inspection and reporting techniques that are in conformance with the ABS HIMP Guide requirements.
INSPECTION GRADING CRITERIA FOR ABS HIMP • 3
This manual is to be used in conjunction with the following ABS publications:
• Guide for Hull Inspection and Maintenance Program
• Rules for Building and Classing Steel Vessels, Part 7: Surveys after Construction
• Guidance Notes for Inspection, Maintenance and Application of Marine Coatings
Attention should also be paid to the IACS guidelines for surveys, assessment and repair of hull structures for relevant ship types.
The inspector is required to grade each particular zone on each of the six criteria. The scoring for a particular zone should not be infl uenced by the scoring of other inspection criteria in that compartment.
4 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Inspection Criteria
This manual identifi es six different criteria to be addressed during the inspections. These are to be documented based on a traffi c light point rating system (0 through 6 scale) on “zones” for each compartment (space or tank). The score assigned to a compartment will denote the compartment’s condition as good, fair or poor and will correspond to one of three colors, green, yellow or red.
The six inspection criteria cover:
• Coating condition
• Presence of general corrosion
• Presence of pitting or grooving or other localized linear corrosion
• Presence of deformation
• Presence of fractures
• Compartment or space cleanliness (housekeeping and fabric maintenance such as anode replace-ment, etc.)
GOOD CONDITION
FAIR CONDITION
POOR CONDITION
Table 1. Traffi c Light Condition Scoring
INSPECTION GRADING CRITERIA FOR ABS HIMP • 5
Coating Condition
The coating condition is defi ned as per ABS Rule requirements and the ABS Guide for Inspection, Maintenance and Application of Marine Coatings:
• GOOD is a condition with only minor spot rusting. (Score is 0 to 2 inclusive)
• FAIR is a condition with local breakdown at edges of stiffeners and weld connections and/or light rusting over 20 percent or more of areas under consideration, but less than as defi ned for POOR condition. (Score is 3 to 4 inclusive); and
• POOR is a condition with general breakdown of coating over 20 percent or more of areas, or hard scale at 10 percent or more of areas under consideration. (Score is 5 to 6 inclusive)
6 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Coat
ing
Cond
itio
nRa
ting
Poin
tsCo
ndit
ion
Com
men
tRi
sk L
evel
Colo
r Co
de
Goo
d
Exce
llent
0Fr
eshl
y co
ated
, neg
ligib
le c
oatin
g br
eakd
own
Low
Goo
d1
Min
or s
pot r
ustin
gLo
w
Goo
d –
Fair
2G
ener
al b
reak
dow
n of
coa
ting
over
5%
Low
– M
ediu
m
Fair
Fair
3Lo
cal b
reak
dow
n at
edg
es o
f st
iffen
ers
and
wel
d co
nnec
tions
(u
ncoa
ted)
Med
ium
Fair
– Po
or4
Gen
eral
bre
akdo
wn
of c
oatin
g ov
er 1
0%M
ediu
m –
Hig
h
Poor
Poor
5G
ener
al b
reak
dow
n of
coa
ting
over
20%
High
Wor
st6
Gen
eral
bre
akdo
wn
of c
oatin
g ov
er 3
0%Ve
ry H
igh
Table 2. Coating Inspection Criteria Point Scoring
INSPECTION GRADING CRITERIA FOR ABS HIMP • 7
Coating Assessment Scale – Surfaces
Assessment Scale for Breakdown
0.1%
1%
20%
Weld
Weld
Weld
10%
15%
20%
0.5%
10%
50%
0.2%
2%
25%
0.3%
5%
33%
Diagram for Pitting Linear Extent
8 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Coating
Coating Condition
Points Condition CommentColor Code
Good 0Freshly coated, negligible
coating breakdown
INSPECTION GRADING CRITERIA FOR ABS HIMP • 9
Coating Condition
Points Condition CommentColor Code
Good 1 Minor spot rusting
10 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Coating Condition
Points Condition CommentColor Code
Good 2General breakdown of
coating over 5%
INSPECTION GRADING CRITERIA FOR ABS HIMP • 11
Coating Condition
Points Condition CommentColor Code
Fair 3Local breakdown at edges
of stiffeners and weld connections (uncoated)
12 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Coating Condition
Points Condition CommentColor Code
Fair 4General breakdown of coating
over 10%
INSPECTION GRADING CRITERIA FOR ABS HIMP • 13
Coating Condition
Points Condition CommentColor Code
Poor 5General breakdown of coating
over 20%
14 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Coating Condition
Points Condition CommentColor Code
Poor 6General breakdown of coating
over 30%
INSPECTION GRADING CRITERIA FOR ABS HIMP • 15
General Corrosion
General or overall corrosion appears as non-protective rust which can uniformly occur on tank internal surfaces that are uncoated, or where coating has totally deteriorated. The rust scale continually breaks off, exposing fresh metal to corrosive attack. Material thickness loss cannot be judged visually until excessive loss has occurred.
16 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Corr
osio
n as
%
of z
one
Rati
ngPo
ints
Cond
itio
n Co
mm
ent
Risk
Le
vel
Colo
r Co
de
0%Ex
celle
nt0
No
rust
ing
Very
Low
< 5
% L
ight
rust
Goo
d1
Neg
ligib
le ru
stin
g/co
rros
ion
Low
< 2
0% L
ight
rust
Goo
d –
Fair
2M
inor
spo
t rus
ting
Low
–
Med
ium
> 2
0% L
ight
rust
>
5%
Har
d sc
ale
Fair
3Lo
cal b
reak
dow
n at
edg
es o
f stif
fene
rs a
nd w
eld
conn
ectio
ns a
nd/o
r lig
ht ru
stin
g ov
er 2
0%
or m
ore
of z
one.
Med
ium
> 1
0% H
ard
scal
eFa
ir –
Poor
4Ha
rd s
cale
at 1
0% o
r mor
e of
zon
e.M
ediu
m –
Hi
gh
> 3
0% H
ard
scal
ePo
or5
Serio
us/s
igni
fi can
t cor
rosi
on: M
ore
than
30%
co
rros
ion
and
activ
e sc
ale
is p
rese
nt. A
ctiv
e sc
ale
is lo
ose
or h
as fa
llen
off t
he s
truc
ture
.Hi
gh
> 7
0% H
ard
scal
eW
orst
6
Exte
nsiv
e ar
ea o
f cor
rosi
on: c
orro
sion
of h
ard
and/
or lo
ose
scal
e, in
clud
ing
pitt
ing,
ove
r 70%
or m
ore
of th
e pl
atin
g su
rface
in q
uest
ion
acco
mpa
nied
by
evid
ence
of t
hinn
ing.
Very
Hig
h
Table 3. General Corrosion Inspection Criteria Point Scoring
INSPECTION GRADING CRITERIA FOR ABS HIMP • 17
Corrosion Extent Diagrams – Edges and Welds
Localized Corrosion Extent Diagrams
Linear Extent Diagrams
2% localized breakdown
15% scattered breakdown
2% scattered breakdown
20% scattered breakdown
10% scattered breakdown
30% scattered breakdown
5%
10%
20%
50%
80%
18 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Corrosion
Corrosion as % of zone
Points Condition CommentColor Code
0% 0 No rusting
INSPECTION GRADING CRITERIA FOR ABS HIMP • 19
Corrosion as % of zone
Points Condition CommentColor Code
< 5% Light rust
1 Negligible rusting/corrosion
20 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Corrosion as % of zone
Points Condition CommentColor Code
< 20% Light rust
2 Minor spot rusting
INSPECTION GRADING CRITERIA FOR ABS HIMP • 21
Corrosion as % of zone
Points Condition CommentColor Code
> 20% Light rust
> 5% Hard scale
3
Local breakdown at edges of stiffeners and weld
connections and/or light rusting over 20% or
more of zone
22 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Corrosion as % of zone
Points Condition CommentColor Code
> 10% Hard scale
4Hard scale at 10% or more of zone
INSPECTION GRADING CRITERIA FOR ABS HIMP • 23
Corrosion as % of zone
Points Condition CommentColor Code
> 30% Hard scale
5
Serious/signifi cant corrosion: More than 30% corrosion and active scale is present. Active
scale is loose or has fallen off the structure.
24 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Corrosion as % of zone
Points Condition CommentColor Code
> 70% Hard scale
6
Extensive area of corrosion: corrosion of hard and/or
loose scale, including pitting, over 70% or more of the
plating surface in question accompanied by evidence of
thinning.
INSPECTION GRADING CRITERIA FOR ABS HIMP • 25
Pitting & Grooving Corrosion
Localized corrosion can occur on bottom plating, other horizontal surfaces and at structural details that trap or follow the fl ow of water and other fl uids, particularly in aft bays of tank bottoms and in the region of suction bell mouths. For coated surfaces, the attack produces deep and relatively small diameter pits that can lead to penetration of the steel member in isolated random places in the tank.
Pitting of uncoated tanks, as it progresses, forms shallow but very wide scabby patches (e.g. 300 mm diameter). The appearance resembles a condition of general corrosion. Pitting is usually seen on horizontal hull parts such as the inner bottom or stringers.
Grooving is a localized, linear corrosion which occurs at structural intersections in welds or heat affected zones. This corrosion is sometimes referred to as “in line pitting attack” and can also occur on vertical members and fl ush sides of bulkheads in way of fl exing. Grooving or “necking” is usually seen on the butt/seam welds and weldments of stiffeners to plating. In particular pitting is found below the suction bell mouths in ballast tanks.
26 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Pitt
ing/
G
roov
ing
Type
Rati
ngPo
ints
Pitt
ing
& G
roov
ing
Dep
thIn
tens
ity
(% o
f Zon
e)Ri
sk
Leve
lCo
lor
Code
No
Pits
/ G
roov
es
Exce
llent
0—
—Ve
ry L
ow
Shal
low
Pits
/ Gr
oove
sG
ood
1Le
ss th
an 1
/3 o
f orig
inal
thic
knes
s<
5 %
Low
Shal
low
Pits
/ Gr
oove
sG
ood
– Fa
ir2
Less
than
1/3
of o
rigin
al th
ickn
ess
< 1
5 %
Low
–
Med
ium
Shal
low
Pits
/ Gr
oove
sFa
ir3
Less
than
1/3
of o
rigin
al th
ickn
ess
> 1
5%M
ediu
m
Deep
Pits
/ G
roov
esFa
ir –
Poor
4M
ore
than
1/3
of o
rigin
al th
ickn
ess
< 1
5 %
Med
ium
–
High
Deep
Pits
/ G
roov
esPo
or5
Mor
e th
an 1
/3 o
f orig
inal
thic
knes
s>
15
%Hi
gh
Deep
Pits
/ G
roov
esW
orst
6Le
ss th
an 6
mm
of o
rigin
al th
ickn
ess
rem
aini
ng—
Very
Hig
h
Table 4. Pitting & Grooving Inspection Criteria Point Scoring
INSPECTION GRADING CRITERIA FOR ABS HIMP • 27
Pitting & Grooving
Pitting/ Grooving
TypePoints
Pitting & Grooving Depth
Intensity (% of Zone)
Color Code
No Pits/ Grooves
0 — —
28 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Pitting/ Grooving
TypePoints
Pitting & Grooving Depth
Intensity (% of Zone)
Color Code
Shallow Pits/
Grooves1
Less than 1/3 of original thickness
< 5%
INSPECTION GRADING CRITERIA FOR ABS HIMP • 29
Pitting/ Grooving
TypePoints
Pitting & Grooving Depth
Intensity (% of Zone)
Color Code
Shallow Pits/
Grooves2
Less than 1/3 of original thickness
< 15%
30 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Pitting/ Grooving
TypePoints
Pitting & Grooving Depth
Intensity (% of Zone)
Color Code
Shallow Pits/
Grooves3
Less than 1/3 of original thickness
> 15%
INSPECTION GRADING CRITERIA FOR ABS HIMP • 31
Pitting/ Grooving
TypePoints
Pitting & Grooving Depth
Intensity (% of Zone)
Color Code
Deep Pits/
Grooves4
More than 1/3 of original thickness
< 15%
32 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Pitting/ Grooving
TypePoints
Pitting & Grooving Depth
Intensity (% of Zone)
Color Code
Deep Pits/
Grooves5
More than 1/3 of original
thickness> 15%
INSPECTION GRADING CRITERIA FOR ABS HIMP • 33
Pitting/ Grooving
TypePoints
Pitting & Grooving Depth
Intensity (% of Zone)
Color Code
Deep Pits/
Grooves6
Less than 6 mm of original thickness remaining
—
34 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Deformation
Deformation is caused by impact loads, contact or overloading. Deformation may be local (deformation of panel or stiffener) or global (deformation of a beam, frame, girder or fl oor including associated plating). Permanent buckling is easily identifi ed and may result from overloading, reduction of thickness due to corrosion or contact damage. Elastic buckling may be identifi ed from coating damage, stress lines and/or shedding of scale.
The panel is defi ned as the area between adjacent transverse frames and adjacent longitudinal stiffeners. A bay is the area between adjacent transverse frames from longitudinal bulkhead to longitudinal bulkhead (or side shell).
INSPECTION GRADING CRITERIA FOR ABS HIMP • 35
Set-
in A
rea
Set-
in D
epth
Rati
ngPo
ints
Cond
itio
n Co
mm
ent
Risk
Lev
elCo
lor
Code
No
Defo
rmat
ion
—Ex
celle
nt0
No
defo
rmat
ion
Very
Low
With
in P
anel
< 7
5 m
m (3
in)
Goo
d1
Gra
dual
set
-inLo
w
With
in P
anel
> 7
5 m
m (3
in)
Goo
d –
Fair
2G
radu
al s
et-in
Low
–
Med
ium
With
in B
ay (m
ultip
le
pane
ls)
< 7
5 m
m (3
in)
Fair
3Se
t-in
with
ass
ocia
ted
inte
rnal
s tr
ippe
dM
ediu
m
Brac
kets
and
Inte
rnal
s Tr
ippe
dFa
ir –
Poor
4Tr
ippe
d an
d bu
ckle
d in
tern
als
& b
rack
ets
Med
ium
–
High
With
in B
ay>
75
mm
(3 in
)Po
or5
Buck
led,
inde
nted
, tr
ippe
d in
tern
als
High
Mul
tiple
Bay
s—
Wor
st6
Buck
led,
hea
vily
in
dent
ed, t
rippe
d in
tern
als
Very
Hig
h
Table 5. Deformation Inspection Criteria Point Scoring
36 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Deformation
Set-in AreaSet-in Depth
PointsCondition Comment
Color Code
No Deformation
— 0No
deformation
INSPECTION GRADING CRITERIA FOR ABS HIMP • 37
Set-in AreaSet-in Depth
PointsCondition Comment
Color Code
Within Panel< 75 mm
(3 in)1
Gradual set-in
38 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Set-in AreaSet-in Depth
PointsCondition Comment
Color Code
Within Panel> 75 mm
(3 in)2
Gradual set-in
INSPECTION GRADING CRITERIA FOR ABS HIMP • 39
Set-in AreaSet-in Depth
PointsCondition Comment
Color Code
Within Bay (multiple panels)
< 75 mm (3 in)
3
Set-in with associated internals tripped
40 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Set-in AreaSet-in Depth
PointsCondition Comment
Color Code
Brackets & Internals
Tripped 4
Tripped and buckled
internals & brackets
INSPECTION GRADING CRITERIA FOR ABS HIMP • 41
Set-in AreaSet-in Depth
PointsCondition Comment
Color Code
Within Bay> 75 mm
(3 in)5
Buckled, indented, tripped
internals
42 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Set-in AreaSet-in Depth
PointsCondition Comment
Color Code
Multiple Bays — 6
Buckled, heavily
indented, tripped
internals
INSPECTION GRADING CRITERIA FOR ABS HIMP • 43
Fracture Location
PointsCondition Comment
Risk Level
Color Code
No Fractures
0 No fracturesVery Low
Welds 3Weld fractures in support brackets,
internals, detachments
Low – Medium
Flanges 3Flanges of brackets, internals, stiffeners
Medium
Webs 4Webs of frames, fl oors, brackets,
stiffeners, internals
Medium – High
Bulkheads 5
Transverse & longitudinal
bulkheads, primary structure members
High
Hull Envelope
(Shell) 6
Sideshell, bottom & deck
Very High
Fracture
Fractures are categorized by a different point system based on the location of the fracture and that local structure’s contribution to overall hull integrity. A fracture of the toe welds of brackets and fl anges of brackets, stiffeners or webs is given 3 points. The fractures to the web plating of frames, fl oors and stiffeners are given 4 points. Fractures to transverse bulkheads and longitudinal bulkheads are given 5 points. Any fracture to the external hull envelope is treated as the worst case and given 6 points.
Table 6. Fracture Inspection Criteria Point Scoring
44 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Fracture
Fracture Location
Points Condition CommentColor Code
No Fractures
0 No fractures
INSPECTION GRADING CRITERIA FOR ABS HIMP • 45
Fracture Location
Points Condition CommentColor Code
Welds 3Weld fractures in support
brackets, internals, detachments
46 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Fracture Location
Points Condition CommentColor Code
Flanges 3Flanges of brackets, internals, stiffeners
INSPECTION GRADING CRITERIA FOR ABS HIMP • 47
Fracture Location
Points Condition CommentColor Code
Webs 4Webs of frames, fl oors, brackets,
stiffeners, internals
48 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Fracture Location
Points Condition CommentColor Code
Bulkheads 5Transverse & longitudinal
bulkheads, primary structure members
INSPECTION GRADING CRITERIA FOR ABS HIMP • 49
Fracture Location
Points Condition CommentColor Code
Hull Envelope
(Shell)6 Sideshell, bottom & deck
50 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Cleanliness & Housekeeping
This criteria is used to evaluate the general condition of the compartment for cleanliness and housekeeping. This should be judged based on the following:
• Amount of the sediments and dredge/sludge remaining in the tank
• Wastage of the anodes and their perceived effectiveness
• General cleanliness of the space
• Condition of the piping and its supports
• Condition of access hatches, manholes, entry spaces, ladders and other means of access
• Loose scale and plugged drainage openings in the structure (e.g., rat holes/scallops)
INSPECTION GRADING CRITERIA FOR ABS HIMP • 51
Clea
nlin
ess
& H
ouse
keep
ing
Rati
ngPo
ints
Cond
itio
n Co
mm
ent
Risk
Le
vel
Colo
r Co
de
Clea
n an
d ex
celle
nt c
ondi
tion
Exce
llent
0Si
mila
r to
new
ly b
uilt
cond
ition
Very
Low
Very
ligh
t, ne
glig
ible
laye
r of
resi
due
and
sedi
men
tsG
ood
1An
odes
in g
ood
cond
ition
mor
e th
an
90%
rem
aini
ngLo
w
Ligh
t lay
er o
f res
idue
, sed
imen
ts
insp
ectio
nsG
ood
– Fa
ir2
Anod
es 7
5% re
mai
ning
. Cle
anin
g no
t re
quire
d fo
r clo
se-u
p.Lo
w –
M
ediu
m
Spac
es s
uffi c
ient
ly c
lean
and
free
fro
m w
ater
, sca
le, d
irt, c
onta
iner
re
sidu
es e
tc. t
o re
veal
cor
rosi
on,
defo
rmat
ion,
frac
ture
s, da
mag
es o
r ot
her s
truc
tura
l det
erio
ratio
n
Fair
3An
odes
50%
rem
aini
ng. M
eani
ngfu
l ex
amin
atio
n is
pos
sibl
e an
d m
ay re
quire
som
e lo
cal c
lean
ing.
Med
ium
Spac
es w
ith s
urfa
ces
cont
aini
ng
loos
e ac
cum
ulat
ed c
orro
sion
sca
leFa
ir –
Poor
4An
odes
30%
rem
aini
ng.W
ater
, sca
le,
dirt
, con
tain
er re
sidu
es e
tc, w
hich
mak
e ex
amin
atio
n di
ffi cu
lt.
Med
ium
–
High
Spac
es w
ith re
sidu
e an
d se
dim
ents
w
hich
do
not g
ive
acce
ss to
sur
face
sPo
or5
Anod
es n
ot e
ffect
ive.
Mea
ning
ful
exam
inat
ion
not p
ossi
ble
with
out c
lean
ing.
High
In a
dditi
on to
abo
ve, s
pace
s w
ith m
eans
of a
cces
s an
d en
try
not s
afe
Wor
st6
Cath
odic
pro
tect
ion
syst
ems
inef
fect
ive.
Co
mpa
rtm
ent n
eeds
to b
e m
ade
safe
fo
r ent
ry.
Very
Hig
h
Table 7. Cleanliness & Housekeeping Inspection Criteria Point Scoring
52 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Cleanliness & Housekeeping
Cleanliness & Housekeeping
Points Condition CommentColor Code
Clean and excellent condition
0 Similar to newly built condition
INSPECTION GRADING CRITERIA FOR ABS HIMP • 53
Cleanliness & Housekeeping
Points Condition CommentColor Code
Very light, negligible layer of residue and
sediments1
Anodes in good condition, more than 90% remaining
54 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Cleanliness & Housekeeping
Points Condition CommentColor Code
Light layer of residue, sediments
2Anodes 75% remaining. Cleaning
not required for close-up.
INSPECTION GRADING CRITERIA FOR ABS HIMP • 55
Cleanliness & Housekeeping Points Condition CommentColor Code
Spaces suffi ciently clean and free from water, scale,
dirt, container residues, etc. to reveal corrosion, deformation or other
structural deterioration
3
Anodes 50% remaining. Meaningful examination
is possible and may require some local
cleaning.
56 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Cleanliness & Housekeeping Points Condition CommentColor Code
Spaces with surfaces containing loose
accumulated corrosion scale
4
Anodes 30% remaining. Water, scale dirt, container residues, etc. which make
examination diffi cult.
INSPECTION GRADING CRITERIA FOR ABS HIMP • 57
Cleanliness & Housekeeping Points Condition CommentColor Code
Spaces with residue and sediments which do not give access to surfaces
5
Anodes not effective, Meaningful examination
not possible with cleaning.
58 • INSPECTION GRADING CRITERIA FOR ABS HIMP
Cleanliness & Housekeeping Points Condition CommentColor Code
In addition to all other conditions, spaces with means of access and
entry not safe
6
Cathodic protection systems ineffective.
Compartment needs to be made safe for entry.
INSPECTION GRADING CRITERIA FOR ABS HIMP • 59
Notifying Superintendent and Class Surveyor
All deformation or fractures discovered during inspection should be brought to the attention of the superintendent (owner’s representative) and the attending class surveyor at the fi rst opportunity. When a compartment transitions from good to fair condition, the class surveyor should be alerted at the next survey. When a compartment transitions to poor condition, class surveyor attendance should be requested at the next port of call.
Having a comparison of the normalized total scores enables the owner to rank like compartments in terms of the overall condition. Such a ranking may further enable a class surveyor to focus surveys in compartments where anomalies and higher scores have been identifi ed.
Table 8. Suggested Notifi cation Thresholds
Inspection Criteria Notify
Superintendent
Coating Condition > 3 points
General Corrosion > 3 points
Pitting & Grooving Corrosion > 3 points
Deformation > 0 points
Fracture > 0 points
Cleanliness & Housekeeping > 3 points
INSPECTION GRADING CRITERIA FOR ABS HIMP • 62
ABS WORLD HEADQUARTERSTel: 1-281-877-5800 • Fax: 1-281-877-5803
Email: abs-worldhq@eagle.org
ABS EUROPE DIVISIONTel: 44-20-7247-3255 • Fax: 44-20-7377-2453
Email: abs-eur@eagle.org
ABS PACIFIC DIVISIONTel: 65-6276-8700 • Fax: 65-6276-8711
Email: abs-pac@eagle.org
ABS AMERICAS DIVISIONTel: 1-281-877-6000 • Fax: 1-281-877-6001
Email: abs-amer@eagle.org
Websitewww.eagle.org
TX 01/09 10000 9003
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