NAVY UFGS-09 97 13 25-2011 MAINTENANCE REPAIR AND COATING OF TALL ANTENNA TOWERS《高天线塔的维护维修和涂层》.pdf

1、*USACE / NAVFAC / AFCESA / NASA UFGS-09 97 13.25 (May 2011)-Preparing Activity: NAVFAC SupersedingUFGS-09 97 13.25 (February 2010)UFGS-09 97 13.25 (August 2009)UFGS-09 97 13.25 (April 2006)UFGS-09910 (August 2004)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated Apri

2、l 2011*SECTION TABLE OF CONTENTSDIVISION 09 - FINISHESSECTION 09 97 13.25MAINTENANCE, REPAIR, AND COATING OF TALL ANTENNA TOWERS05/11PART 1 GENERAL1.1 REFERENCES1.2 MODIFICATIONS TO REFERENCES1.3 DESCRIPTION OF WORK1.4 SUBMITTALS1.5 SAFETY1.6 DELIVERY, STORAGE AND HANDLING1.6.1 Coating Materials1.6.

3、2 Structural and Miscellaneous Materials1.7 EXISTING TOWER CONDITIONS1.8 COATING HAZARDS1.9 JOB SITE REFERENCES1.10 PRE-APPLICATION MEETING1.11 QUALITY ASSURANCE1.11.1 Drawings: Steel, Stainless Steel ,Aluminum Fabrication1.11.2 Design Data: Coating System1.11.3 Certificates1.11.3.1 Work Plan1.11.3.

4、2 Qualifications of Certified Industrial Hygienist (CIH)1.11.3.3 Qualifications of Testing Laboratory for Coatings1.11.3.4 Qualifications of Testing Laboratory for Abrasive Media1.11.3.5 Qualifications of Coating Contractors1.11.3.6 Qualifications of Painting Shop1.11.3.7 Abrasive Media1.11.3.8 Coat

5、ing System Compatibility1.11.4 Test Reports1.11.4.1 Non-metallic Abrasive Media1.11.4.2 Coatings1.11.4.3 Metallic Abrasive Media1.11.4.4 Daily Inspection Checklist1.11.4.5 Recycled Metallic Abrasive MediaSECTION 09 97 13.25 Page 1Provided by IHSNot for ResaleNo reproduction or networking permitted w

6、ithout license from IHS-,-,-PART 2 PRODUCTS2.1 STEEL2.1.1 Structural and Miscellaneous Steel2.1.2 Steel Tubing and Pipe2.2 STAINLESS STEEL2.2.1 Band Clamps2.3 ALUMINUM2.3.1 Plates and Shapes2.3.2 Stranded Conductor2.4 BOLTS, NUTS, AND WASHERS2.4.1 Structural Steel2.4.1.1 Bolts2.4.1.2 Nuts2.4.1.3 Was

7、hers2.4.1.4 Load Indicator Washers2.4.2 Stainless Steel2.4.2.1 Bolts2.4.2.2 Nuts2.4.2.3 Washers2.4.3 Aluminum2.4.3.1 Bolts2.4.3.2 Nuts2.4.3.3 Washers2.5 GALVANIZING2.5.1 Galvanizing Repair Compound2.6 WELDING2.6.1 Exothermic Weld Kits2.7 COATING SYSTEM2.7.1 Sealer for Thermal Spray Metallizing2.7.2

8、Zinc Rich Epoxy Primer Coat2.7.3 Epoxy Intermediate Coat2.7.4 Polyurethane Topcoat2.8 SOLUBLE SALTS TEST KITS2.8.1 Test Kit for Measuring Chlorides on Steel Surfaces2.8.2 Test Kit for Measuring Chlorides in Abrasives2.9 ABRASIVE MEDIA2.9.1 Non-metallic Abrasive Media2.9.2 Metallic Abrasive Media2.9.

9、2.1 New and Remanufactured Metallic Abrasive Media2.9.2.2 Recycled Metallic Abrasive MediaPART 3 EXECUTION3.1 STRUCTURAL REPAIRS MODIFICATIONS3.1.1 Fabrication3.1.1.1 Measurements3.1.1.2 Metal Surfaces3.1.1.3 Construction3.1.1.4 Fastening3.1.1.5 Shop Fabrication3.1.2 Galvanizing3.1.3 Welding3.1.3.1

10、Exothermic Welding3.1.4 Connections3.1.4.1 Bolts3.1.4.2 Stainless Steel Fasteners3.1.4.3 Installation of Load Indicator Washers (LIW)3.2 COATING SAMPLING AND FIELD TESTINGSECTION 09 97 13.25 Page 2Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.2.1

11、 Coating Sample Collection3.2.2 Coating Sample Testing3.3 SURFACES TO BE COATED3.3.1 Protection of Items not to be Painted3.4 ACCEPTABLE INSTALLERS3.5 LIGHTING3.6 CONTAINMENT SYSTEM3.6.1 Containment System Plans3.7 Removal of Coatings Containing Hazardous Materials3.8 SURFACE PREPARATION3.8.1 Abrasi

12、ve Blasting Equipment3.8.2 Abrasives for Soluble Salts Contamination3.8.2.1 Pre-Preparation Testing of Abrasive Media Shipped in Bulk Containers3.8.2.2 Abrasive Media Shipped in Bags (Nominal 50-110 lb.)3.8.2.3 Operational Testing of Recycled Metallic Abrasive Media3.8.3 Clean and Repair3.8.4 Surfac

13、e Standard3.8.5 Pre-Preparation Testing for Surface Contamination3.8.5.1 Pre-Preparation Testing for Oil and Grease Contamination3.8.5.2 Pre-Preparation Testing for Soluble Salts Contamination3.8.6 Abrasive Blasting3.8.7 Disposal of Used Abrasive3.8.8 Pre-Application Testing For Surface Contaminatio

14、n3.8.8.1 Pre-Application Testing for Oil and Grease Contamination3.8.8.2 Pre-Application Testing for Soluble Salts Contamination3.8.8.3 Pre-Application Testing for Surface Cleanliness3.9 MIXING AND APPLICATION OF COATING SYSTEM3.9.1 Preparation of Coating Materials for Application3.9.1.1 Mixing Seal

15、er, Primer, Intermediate, and Topcoat Materials3.9.1.2 Pot Life3.9.1.3 Application Conditions and Recoat Windows3.9.2 Application of Coating System3.9.2.1 Sealer Coat for Spray Metalizing3.9.2.2 Application of Primer3.9.2.3 Application of Stripe Coat3.9.2.4 Application of Intermediate Coat3.9.2.5 Ap

16、plication of Topcoat3.9.2.6 Procedure for Making Spot Repairs3.10 FIELD TESTS AND INSPECTION3.10.1 NACE Coating Inspector3.10.2 Field Inspection3.10.2.1 Thickness Testing3.10.3 Hold Points for Quality Control Inspections3.11 ELECTRICAL WORK3.11.1 Terminating Aluminum Stranded Conductors3.12 FINAL CL

17、EANUP- End of Section Table of Contents -SECTION 09 97 13.25 Page 3Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-*USACE / NAVFAC / AFCESA / NASA UFGS-09 97 13.25 (May 2011)-Preparing Activity: NAVFAC SupersedingUFGS-09 97 13.25 (February 2010)UFGS-

18、09 97 13.25 (August 2009)UFGS-09 97 13.25 (April 2006)UFGS-09910 (August 2004)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated April 2011*SECTION 09 97 13.25MAINTENANCE, REPAIR, AND COATING OF TALL ANTENNA TOWERS05/11*NOTE: This guide specification covers the requir

19、ements for coating of new, and repairs to existing, steel towers.Adhere to UFC 1-300-02 Unified Facilities Guide Specifications (UFGS) Format Standard when editing this guide specification or preparing new project specification sections. Edit this guide specification for project specific requirement

20、s by adding, deleting, or revising text. For bracketed items, choose applicable items(s) or insert appropriate information.Remove information and requirements not required in respective project, whether or not brackets are present.Comments, suggestions and recommended changes for this guide specific

21、ation are welcome and should be submitted as a Criteria Change Request (CCR).*NOTE: Due to the complexity of coating design for maintenance coating, this document is more of a compendium of “potential“ requirements rather than a guide specification, and it should be edited for use only by personnel

22、that are competent in coating design. For maintenance coating design, there is significant information that must be collected, tested, and evaluated to provide a satisfactory design. The scope of this information, particularly a coating condition survey (CCS), is discussed herein. Work covered by th

23、is specification includes replacement of structural members,coating/recoating of tower structure and minor electrical work.*SECTION 09 97 13.25 Page 4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-*NOTE: New towers should be coated using one of the

24、following systems in priority order:First choicePrimer - Hot dip galvanizingIntermediate - MIL-DTL-24441/29Topcoat - MIL-PRF-85285 Type IISecond choiceSurface Preparation - SSPC SP-5Primer - Spray metalizing (shop applied)Sealer - MIL-DTL-24441/29 (thinned 50 percent)Intermediate - MIL-DTL-24441/29T

25、opcoat - MIL-PRF-85285 Type IIThird choiceSurface Preparation - SSPC SP 5 Primer - DOD-PRF-24648 Type II, Class 1, Comp BInorganic zinc (shop applied)Intermediate - MIL-DTL-24441/29Topcoat - MIL-PRF-85285 Type IINew towers should be shop-coated in a shop that has SSPC QP 3 Certification, shipped to

26、site, erected, and touched-up.*NOTE: The fact that most high antenna towers were either galvanized or treated with a high-performance zinc primer requires considerable attention to the design to ensure that only the required work is scoped, and that the specified work does not damage sound zinc (gal

27、vanizing or other zinc primers) surfaces. While the coatings continue to age and degrade, the galvanized surfaces are generally found to be in good condition. A properly executed coating condition survey (CCS) will provide details of the condition of the entire coating system.*NOTE: For purposes of

28、this specification, the term “maintenance coating“ refers to maintenance overcoating as opposed to complete removal of coatings and recoating. For maintenance coating designs, or to determine if maintenance overcoating is appropriate, a coating condition survey (CCS) should be accomplished. The CCS

29、should be accomplished by personnel from a business that routinely performs coating evaluations, and the individual investigator should be Certified by SSPC as a Protective Coatings Specialist. The CCS should be sufficiently detailed to provide all technical information about the coatings, and struc

30、tures to be coated, required to properly design the project. At a minimum, the CCS should provide a detailed report of: SECTION 09 97 13.25 Page 5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1. Existing coating conditions, including condition of c

31、oating film, and the existence of potentially hazardous substances that may impact coating management (i.e. lead, cadmium, chromium);2. Analysis of remaining coating life, suitability of overcoating, and technical requirements for overcoating;3. Technical recommendations for the most cost effective

32、management of existing coating systems, including any hazardous materials present in paint film; and 4. Any other information of interest to the coating system management that should be identifiable by an individual trained and experienced in the field of coating analysis, coating failure analysis,

33、and coating design.The scope of the CCS should be tailored to the specific project, and it should be recognized that while multiple coating failures or deficiencies may look similar to the untrained eye, the risks of generalizing to save evaluation costs are potentially very high. The cost of large-

34、scale failure of the overcoating, and complete replacement of the coating system, is far more than the cost of a CCS for all but the smallest projects.The risks of overcoating can usually be avoided by designing project to remove all existing coatings to bare metal, then providing appropriate surfac

35、e preparation and coating application. However, the extra costs of the coating removal, especially if containing hazardous material, along with the cost of surface preparation to SSPC SP 10 Abrasive Blast to Near-White Metal, may be exorbitant compared to the costs of maintenance overcoating where t

36、he existing coating system is in fair-to-good condition.Additionally, NAVFAC Design Policy Letter DPL-09B-0001, Lead-containing Paint on Non-residential Structures of 26 Mar 92 provides guidance for managing paints containing lead and other hazardous materials in place. The fact that lead was highly

37、 used as a primer is indicative of its value to the corrosion control industry. Premature removal of sound lead primer is not considered to be a good management practice.Activities should consider an annual CCS to survey all structures to be authorized for design in the coming year. When accomplishe

38、d for multiple projects, the per-structure cost will decrease. By accomplishing this survey prior to design, the basis for design is fully identified.SECTION 09 97 13.25 Page 6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-The CCS can also be a very

39、 useful tool when used to screen structures for maintenance painting requirements. A CCS can be scoped to provide a general inspection of many structures to screen for near-term overcoating or recoating requirements, and subsequent investigation can be made to provide appropriate details for project

40、 planning and design.It should be pointed out that the aesthetic features of a coating do not define the coating condition; they only describe how the coating looks. Many coating systems have been replaced when only the topcoat is in need of “refurbishment.“ Likewise, many structures such as water t

41、anks and fuel tanks have had complete coating replacement when only the roof coating needed replacement. A CCS can identify the weak components as well as the satisfactory components, and propose solutions to make maximum use of existing resources.The Society for Protective Coatings (formerly Steel

42、Structures Painting Council) (SSPC), has published a Technology Update titled SSPC TU 3 Maintenance Overcoating. This document should be used as a guide for scoping the CCS, for accomplishing the CCS, and for designing the coating work.*PART 1 GENERAL1.1 REFERENCES*NOTE: This paragraph is used to li

43、st the publications cited in the text of the guide specification. The publications are referred to in the text by basic designation only and listed in this paragraph by organization, designation, date, and title.Use the Reference Wizards Check Reference feature when you add a RID outside of the Sect

44、ions Reference Article to automatically place the reference in the Reference Article. Also use the Reference Wizards Check Reference feature to update the issue dates.References not used in the text will automatically be deleted from this section of the project specification when you choose to reconcile references in the publish print process.*The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation onl