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NACE Standard RP0287-2002
Item No
...
Its acceptance does not in any respect
preclude anyone, whether he has adopted the standard or not, from manufacturing, marketing,
purchasing, or using products, processes, or procedures not in conformance with this standard
...
This standard represents minimum requirements and should in no
way be interpreted as a restriction on the use of better procedures or materials
...
Unpredictable circumstances may
negate the usefulness of this standard in specific instances
...

Users of this NACE International standard are responsible for reviewing appropriate health, safety,
environmental, and regulatory documents and for determining their applicability in relation to this
standard prior to its use
...
Users of this
NACE International standard are also responsible for establishing appropriate health, safety, and
environmental protection practices, in consultation with appropriate regulatory authorities if
necessary, to achieve compliance with any existing applicable regulatory requirements prior to the
use of this standard
...
NACE International requires that action be
taken to reaffirm, revise, or withdraw this standard no later than five years from the date of initial
publication
...
Purchasers of NACE International
standards may receive current information on all standards and other NACE International
publications by contacting the NACE International Membership Services Department, 1440 South
Creek Drive, Houston, Texas 77084-4906 (telephone +1 [281] 228-6200)
...


RP0287-2002

________________________________________________________________________
Foreword
Prior to the application of protective coatings to steel surfaces, the surfaces are frequently cleaned
by abrasive impact
...
The resulting degree of surface roughness is affected by many variables, including the
type, size, and shape of the abrasive used, velocity of impact, etc
...

Because a surface profile range is frequently specified and the recommended surface profile is
different for various types of coatings, a means of surface profile measurement at the work site is
desirable
...
The measurement technique utilizes a tape that
replicates the surface profile
...
Other common methods of measuring
surface profile are not discussed
...
5 and
1
2
3
4
...

The determination of surface profile depends on its definition
...
2
...
If surface profile is defined
differently, the procedures outlined in this standard may not provide accurate results
...

Appendix A presents the results of a round-robin series of measurements by several individuals,
and illustrates the degree of accuracy of the procedure described in this standard
...
Panels used in the tests shown
in Appendix A were hot-rolled and nonrusted
...
Measurements are taken on relatively flat areas where the
surface appears to be continuous and uniform
...

This standard was originally prepared in 1987 by NACE International Task Group T-6G-19, a component of Unit Committee T-6G on Surface Preparation for Protective Coatings
...
This standard is issued by
NACE International under the auspices of STG 04
...
, Paragraph 7
...
1
...
Shall
and must are used to state mandatory requirements
...
The term may is used to state
something considered optional
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i

RP0287-2002

________________________________________________________________________

NACE International
Standard
Recommended Practice

Field Measurement of Surface Profile of Abrasive BlastCleaned Steel Surfaces Using a Replica Tape
Contents
1
...
1
2
...
1
3
...
1
4
...
1
References
...
2
Appendix B: Statistical Summary
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RP0287-2002
________________________________________________________________________
Section 1: General
1
...
5 and 4
...
The
procedure has been demonstrated to correlate well with the

measurements obtained by the defined laboratory procedure on nonrusted panels prepared to NACE No
...
2/SSPC-SP 10, or NACE No
...
Suggestions are given regarding the implementation and use of this procedure
...
4 The laboratory
procedure described in 6G176 entails averaging a stat-

istically significant number of readings (20 to 30) using an
optical microscope, magnification of 250 to 280X, with a
field of 0
...
46 mm (0
...
018 in
...


________________________________________________________________________
Section 3: Equipment
3
...
5 mm (0
...
) in diameter that
exposes the underlying foam
...
1
...
The film has a

3
...
1 mils)
...
6 mm (0
...
) in diameter
...
1 A clean representative surface site shall be identified
...
The tape
shall not be used on surfaces with a temperature higher
than 54°C (130°F)
...
2 The micrometer shall be adjusted to zero with the
anvils closed
...
3 The wax paper backing shall be removed from the
replica tape
...
The unexposed compressible foam
in the circular cut-out shall be measured with the spring
micrometer, because its thickness may vary
...
The premeasured
thickness of the compressible foam is the maximum profile
height for which the replica tape may be used
...
4 The replica tape film shall be placed on the blastcleaned surface, dull side down
...
A burnishing tool (a hard plastic
rod with a spherical end could be used) shall be rubbed
over the circular cut-out portion of the replica tape
...
Excessively hard rubbing should
be avoided because the polyester film could become distorted
...
5 The replica shall be removed and placed between the
anvils of the micrometer
...
If most of the profile measurements closely
approach the premeasured thickness of the compressible
foam, alternative procedures should be considered because
the accuracy of the procedure may be affected
...
6 If desired, and if the dial micrometer can be so adjusted, the micrometer may be set at -50 µm (-2 mils) with
the anvils closed, and subsequent readings of the compressible foam may be made directly
...
, Pittsburgh, PA 15222
...


1

RP0287-2002
4
...
3, it shall be disregarded
...
) is
attached to the compressible foam
...
8 Three individual readings should be taken on any given
local area and averaged to determine the surface profile
measurement
...

4
...
While a comparator cannot be used for exact
calibration because of design differences, verification
should ensure consistent, reproducible results
...
NACE No
...


3
...
3/SSPC-SP 6 (latest revision), “Commercial
Blast Cleaning” (Houston, TX: NACE and Pittsburgh, PA:
SSPC)
...
NACE No
...


4
...

(Available from NACE International as an historical
document only
...
The solid line

Figure A1

2

represents the profile as determined by NACE Technical
Committee Report 6G176
...


RP0287-2002

Figure A3

Figure A4

Figure A5

Figure A6

Figure A7

Figure A8

NACE International

Peter Engelbert - Invoice INV-226601-TDKNBK, downloaded on 6/25/2009 9:24:56 AM - Single-user license only, copying and networking prohibited
...


RP0287-2002
________________________________________________________________________
Appendix B: Statistical Summary
Table B1 gives a statistical summary of the results of the T6G-19 round-robin tests
...


TABLE B1
(A)
Statistical Summary
Microscope Readings

Number
1
...
S230
3
...
S390
5
...
GL-50
7
...
GL-25
9
...
BB4016
11
...
16/40 Sand
13
...
12/30 Al2O3

95% Confidence
(B)
Limits
Low
High
2
...
03
1
...
49
3
...
63
2
...
33
2
...
48
1
...
19
3
...
47
2
...
04
1
...
35
1
...
99
2
...
41
1
...
05
2
...
44
2
...
11

Avg
...
72
2
...
05
2
...
31
2
...
94
3
...
14
1
...
22
1
...
18
2
...
1/SSPC-SP 5
NACE No
...
1/SSPC-SP 5
NACE No
...
1/SSPC-SP 5
NACE No
...
1/SSPC-SP 5
NACE No
...
2/SSPC-SP 10
NACE No
...
2/SSPC-SP 10
NACE No
...
2/SSPC-SP 10
NACE No
...
57
3
...
28
2
...
01
4
...
44
40
...
06
2
...
22
2
...
85
4
...
32
4
...
71
2
...
05
2
...
74
2
...
72
2
...
69
2
...
58
2
...

2
...
36
4
...
76
2
...
39
4
...
71
2
...
24
1
...
90
2
...
73

(A)

This statistical summary was conducted using standard U
...
units of measure
...
4 µm
...
Example: Panel 1 microscope data, average = 2
...
41; 95% upper limit = 3
...
This
indicates 95% confidence that the average of an infinite number of microscope readings on Panel 1 would be between 2
...
03 mils
...
5

Profile
in Mils

4

100

3
...
5
2

50

1
...
5
0

0
1

2

3

4

5

6

7

8

9

10

11

12

13

14

Panel Number
95% Confidence Lower Microscope Reading
95% Confidence Upper Microscope Reading
Average Replica Tape Reading (Seven Observers)

Figure B1
Microscope vs
...


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