Nace CP 1, Руководство по эксплуатации

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RP0176-2003
NACE International
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15.2.5.2 Location, size, and type of corrosion
damage found during any underwater inspection,
and location and general description of trash metal
located on and around the base of the structure.
15.2.5.3
Size, composition, location, number,
method of attachment, cost, supplier, and date of
installation of all replacement anodes.
15.2.5.4 Any maintenance performed on the recti-
fier.
15.2.5.5 Downtime of the impressed current sys-
tem, whenever possible.
15.2.5.6 Any enlargement of the structure or addi-
tion of pipelines and flowlines. Any deviation in
setting depth (see Paragraph 15.1.4).
15.3 Coating and Cladding Systems
15.3.1 This section pertains to the coatings used in at-
mospheric and submerged zones and the special coat-
ings and claddings, both metallic and nonmetallic, used
in the splash zone.
15.3.2 When wear plates are specified for the splash
zone, the anticipated corrosion rate assumed in the
design calculations should be recorded.
15.3.3 Initial installation—The following should be
recorded:
15.3.3.1 Surface preparation, primer, intermedi-
ate, and topcoats used, including the quality of
surface preparation, the DFT of each coat, and the
number of coats.
15.3.3.2 Coating manufacturer(s), applicator, and
date of application.
15.3.3.3 Inspection procedure and the results of
any spot tests for film thickness and holidays.
15.3.3.4 Cost of surface preparation, coating mat-
erial, and coating application.
15.3.4 Inspection
15.3.4.1 Coating and cladding systems should be
inspected on a regular basis.
15.3.4.2 Location, type, and amount of deteriora-
tion found should be recorded during each inspec-
tion.
15.3.5 Maintenance—The following should be re-
corded:
15.3.5.1 Date of each touch-up and recoating job
and the reason for the job, such as post-erection,
post-drilling, routine maintenance, etc.
15.3.5.2 Total area recoated, the surface prepara-
tion and coating system used, and the inspection
procedure.
15.3.5.3 Name of the coating contractor, labor
materials, and equipment used, and the total cost
of the job.
________________________________________________________________________
References
1. NACE Standard RP0169 (latest revision), “Control of
External Corrosion on Underground or Submerged Metallic
Piping Systems” (Houston, TX: NACE).
2. R. Baboian, ed., NACE Corrosion Engineer’s Refer-
ence Book, 3rd ed. (Houston, TX: NACE, 2002).
3. NACE International 2002 Glossary of Corrosion-Rel-
ated Terms (Houston, TX: NACE, 2002).
4. API RP 2A-WSD (latest revision), “Planning, Design-
ing, and Constructing Fixed Offshore Platforms—Working
Stress Design” (Washington, DC: API).
5. API RP 2A-LRFD (latest revision), “Recommended
Practice for Planning, Designing, and Constructing Fixed
Offshore Platforms—Load and Resistance Factor Design”
(Washington, DC: API).
6. M.G. Fontana, Corrosion Engineering, 3rd ed. (New
York, NY: McGraw Hill, 1986).
7. ASTM B 418 (latest revision), “Standard Specification
for Cast and Wrought Galvanic Zinc Anodes” (West Con-
shohocken, PA: ASTM).
8. MIL-A-18001 (latest revision), “Anodes, Sacrificial Zinc
Alloy” (Washington, DC: Government Printing Office).
9. “Tests Indicate the Ag/AgCl Elec Is Ideal Reference
Cell in Sea Water,” Materials Protection and Performance
11, 5 (May 1972): pp. 19-22.
10. W.H. Hartt, E. Lemieux, “A Principal Determinant in
Cathodic Protection Design of Offshore Structures—The
Mean Current Density,” Corrosion 56, 10 (2000): pp. 988-
997.
11. NACE Standard RP0387 (latest revision), “Metallurgical
and Inspection Requirements for Cast Sacrificial Anodes for
Offshore Applications” (Houston, TX: NACE).