SSPC TR 4-2000 Preparation of Protective Coating Specifications for Atmospheric Service (NACE 80200)《大气作业用保护涂层预处理规范NACE 80200》.pdf

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1、SSPC-TR 4/NACE 80200 December, 2000 Joint Technology Report SSPC-TR 4/NACE 80200 Preparation of Protective Coating Specifications for Atmospheric Service This SSPC: The Society for Protective Coatings (SSPC)/NACE International (NACE) report represents a consensus of those individual members who have

2、 reviewed this document, its scope, and provisions. Its acceptance does not in any respect preclude anyone, whether he has adopted the report or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not in conformance with this report. Nothing contained in this

3、SSPC/NACE report is to be construed as granting any right, by implication or otherwise, to manufacture, sell, or use in connection with any method, apparatus, or product covered by Letters Patent, or as indemnifying or protecting anyone against liability for infringement of Letters Patent. This repo

4、rt should in no way be interpreted as a restriction on the use of better procedures or materials. Neither is this report intended to apply in all cases relating to the subject. Unpredictable circumstances may negate the usefulness of this report in specific instances. SSPC and NACE assume no respons

5、ibility for the interpretation or use of this report by other parties. Users of this SSPC/NACE report are responsible for reviewing appropriate health, safety, environmental, and regulatory documents and for determining their applicability in relation to this report prior to its use. This SSPC/NACE

6、report may not necessarily address all potential health and safety problems or environmental hazards associated with the use of materials, equipment, and/or operations detailed or referred to within this report. Users of this SSPC/NACE report are also responsible for establishing appropriate health,

7、 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 report. CAUTIONARY NOTICE: The user is cautioned to obtain the latest edition of

8、this report. SSPC/NACE reports are subject to periodic review, and may be revised or withdrawn at any time without prior notice. SSPC and NACE require that action be taken to reaffirm, revise, or withdraw this report no later than ten years from the date of initial publication. Approved December 200

9、0 2000, SSPC and NACE International NOTICE TO THE READER: The SSPC and NACE releases of this publication contain identical wording in the same sequence. Publication format may differ. 1SSPC-TR 4/NACE 80200 December 2000 Foreword The purpose of this SSPC/NACE technical committee report is to describe

10、 current practices for the preparation of a protective coating specification for atmospheric service. It provides a general description of a specification, as well as a review of the contents of a specification; the typical selection of protective coatings; and the establishment of job and inspectio

11、n requirements. Format and writing style are stressed. There is also discussion of commercial aspects of the work that have not typically been contained in the technical specification. This report is intended for facility owners, engineering/erection contractors, in-plant protective coating speciali

12、sts, inspectors, and others responsible for protective coating work. This joint technical committee report was prepared by the SSPC/NACE Task Group 004 on Coating Specifications. This joint task group is administered by NACE Specific Technology Group (STG) 80 on Intersociety Joint Coatings Activitie

13、s. It is also sponsored by STG 03 on Protective Coatings and Linings Immersion/Buried. This report is published by SSPC and by NACE under the auspices of STG 80. Definition of a Specification A coating specification is a document that details the mandatory technical requirements of work involving th

14、e use of protective coatings. It includes requirements for the quality of materials to be used during a protective coating application and the work to be accomplished. The general objective of the coating specification is to ensure that the owner or purchaser receives the finished work product that

15、is desired. This is accomplished by providing a detailed definition of work to be done in a well-designed specification. Without a well-designed protective coating specification, problems such as unrealistic bidding, disputes of specific requirements, inappropriate materials or workmanship, delays i

16、n completing the work, costly change orders, and increased costs, are likely to occur. Specifications are concise and specific, and contain essential information and requirements. There are several objectives for preparing a protective coating specification. These include, but are not limited to, th

17、e following: To obtain specific protective coating products or their equals; To assure quality materials and workmanship; To determine inspection requirements; To assure timely completion of work; To avoid disputes; To obtain reasonable costs that reflect the specifi-cation requirements; To avoid co

18、stly change orders and claims; To meet safety, environmental, and regulatory requirements of the protective coating operation; and To assure suitable coating systems are applied to the correct equipment. General Specification Characteristics The following topics are frequently included in the first

19、part of a protective coating specification, not necessarily in the order as discussed in subsequent paragraphs. Scope of Work: A summary is used at the beginning of a specification to state the scope and purpose of the work. It provides general information and not specific items that are described e

20、lsewhere in other specifications. A title is sometimes adequate for this purpose. Reference Section: The reference section lists all documents to be used in conjunction with the specifi-cation. No reference is made to standards or technical specifications that are not part of the specification requi

21、rements. Generally, only one standard method is referenced for each requirement, although alternative methods are often available. These documents might include, but are not limited to, those of AISC,(1)ASTM,(2)AWS,(3)AWWA,(4)ISO,(5)SSPC, NACE, ACI,(6)ICRI,(7)PDCA,(8)and coating manufacturers materi

22、als safety data sheets (MSDS) and product data sheets. _ (1)American Institute of Steel Construction (AISC), 1 E Wacker Drive, Suite 3100, Chicago, IL 60601-2001. (2)American Society for Testing and Materials (ATSM), 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. (3)American Welding Societ

23、y Inc. (AWS), 550 N W Le Jeune Road, Miami, FL 33126. (4)American Water Works Association (AWWA), 6666 W Quincy Avenue, Denver, CO 80235. (5)International Organization for Standardization (ISO), Case Postale 56, Geneva CH-1211, Switzerland. (6)American Concrete Institute (ACI), P.O. Box 9094, Farmin

24、gton Hills, MI 48333. (7)International Concrete Repair Institute (ICRI), 1323 Shepard Drive, Suite D, Sterling, VA 21064. (8)Painting and Decorating Contractors of America (PDCA), 3913 Old Lee Highway, Suite 33B, Fairfax, VA 22030. 2SSPC-TR 4/NACE 80200 December, 2000 Definition Section: Terms that

25、could be subject to interpretation are defined in this section. Submittals Section: Documents or samples to be supplied by the coating contractor are normally specified in this section. These might include the following: Samples of coatings to be used; Drawdown films of these coatings; Coated refere

26、nce panels; Certificates of conformance or performance; Manufacturers product data sheets and appli-cation instructions; Material safety data sheets; Contractors projected schedule or work plan; Contractor certification (such as SSPC1, 2, 3or equivalent) Contractors QC program and procedures; and Co

27、ntractors inspector training and certification. The submittals are usually kept to a minimum and are not always utilized unless specified by the owner or purchaser in order to accomplish the work. Quality Assurance Section: This section details all items deemed necessary for quality assurance. This

28、can include requesting qualifications of the contractor and his personnel, certification of the contractor and personnel, and field sampling. It frequently includes a proposed inspection plan as a submittal, because the contractor might be responsible for inspection as well as for quality of the wor

29、k. Normally, the contractor is also responsible for meeting all applicable regulations as well as the owners working rules and safety standards. Prejob Visit and Conference: Many specifications require a jobsite visit and conference to review work procedures and standards. Delivery, Storage, Handlin

30、g, and Disposal Section: Detailed in this section are requirements concerning delivery, storage, and handling of products to be used. Collection, storage, and disposal of waste materials and abrasive debris are also detailed. Site Conditions Section: Conditions at the job site that can affect the wo

31、rk are defined in this section or in other contract documents. These conditions can include utility availability, safety, environmental, and personnel considerations. Any potentially hazardous materials or operations are normally noted. Failure to note site conditions in the specification can result

32、 in costly change orders. Resolution of Conflicts: A procedure for resolving conflicts in the specification, references, or product manufacturers instructions is normally stated. Product Specification This portion of the specification defines the requirements for protective coating products to be em

33、ployed in the work. Protective coating products can be specified by brand name, performance criteria, or qualified products list. When specific brand names are listed, it is common practice to provide the coating contractor with a choice by specifying two or more products. All protective coatings in

34、 a single system are usually supplied by the same manufacturer. Color requirements are typically specified in this section. Project Execution The execution section details surface preparation and application of protective coatings. Surface preparation is a vital factor in achieving long-term durabil

35、ity of the coat-ing system. Surface preparation is defined by industry standards and can include hand/power tool cleaning, abrasive blasting, and hydroblasting, among others, or a combination of different techniques. If an abrasive is used, the owner generally specifies the type. However, depth of a

36、nchor pattern is usually specified in the coating manufacturers data sheets. The owner also specifies any limiting conditions such as requirements for dust, debris, and overspray control, limiting schedules for abrasive blast cleaning or coating application, and any other limitations affecting the w

37、ork. The protective coating systems to be used for carbon steel piping, vessels, tankage, or other equipment exposed to the atmosphere are typically specified, along with the level of surface preparation, coating material, number of coats, dry film thickness, and finish color. Other protective coati

38、ng systems for use under insulation or fireproofing, at elevated equipment operating temper-atures, for safety identification, below grade, or water, and other environments or situations are also specified. Protective coating systems are frequently listed in tabular form within or at the end of the

39、specification. At times, the owner specifies that hot-dip galvanizing be substituted for protective coating systems, especially for hand rails, stairs, ladders, safety cages, or other struc-tures. As appropriate, galvanizing is sometimes specified for beams and columns. The standards that are to be

40、used for galvanizing applications are usually included in the reference section of the specification and can include ASTM A 1234and ASTM A 780.53SSPC-TR 4/NACE 80200 December, 2000 The limitations on weather or other conditions that might adversely affect the work are normally defined by the owner i

41、n the specification or other contract documents. Such limitations can include temperature, humidity, and wind. When limits defined vary from those recommended by the coating manufacturer, the contractor is typically responsible for resolving this problem with the owner. Purchased equipment, such as

42、vessels, pumps, rotating machinery, valves, and other equipment items are some-times specified to be prime coated in the shop prior to field delivery. Repair and topcoat systems are included in the specification in the event such prime-coated equip-ment is damaged and/or requires topcoat in the fiel

43、d. This section also includes those materials the owner does not want coated, unless otherwise specified, such as: Stainless steel Galvanized steel Nonferrous metals Thermal insulation jacketing or covering Concrete Plastics Shielding or masking is frequently required by the owner to protect sensiti

44、ve equipment, such as electronic equip-ment, gauge glasses, valve stems, machined surfaces, equipment identification labels, lighting fixtures, compres-sors, pumps, electric motors, or other equipment, from abrasive debris and dust and from overspray. When repairs are required, the contractor typica

45、lly prepares a repair procedure that can contain surface preparation, type and number of coats, and application techniques. This normally includes purchased equipment. These repair procedures are submitted to the owner for approval. Inspection Owner inspection requirements are normally defined in th

46、is section. This has been accomplished by referencing accepted industry quality criteria test methods as avail-able from SSPC, NACE, ASTM, or others. Based on these requirements, the contractor submits the inspection plan discussed previously, and informs the owner when particular inspection points

47、are reached and available. Inspectors are typically certified by the NACE Coating Inspector Certification Program or equivalent. It is usually specified that the owners inspector has full access to all work. Owners frequently request participation of the owners inspector in specific areas of coating

48、 application including but not limited to: Coating contractors recordkeeping SSPCs The Inspection of Coatings and Linings6and the NACE Coating Inspectors Logbook7contain information and forms for accurate and precise recordkeeping. Environmental conditions such as temperature, humidity, wind, direct

49、 sunlight, rain, or other environ-mental conditions during storage of coating materials, surface preparation, application, and curing. Surface preparation cleaning equipment, operation of equipment, degree of cleaning, and anchor pat-tern, if specified. Application storage of materials, mixing, application equipment, application, wet film thickness, dry-film thickness, and appearance. Acceptance testing appearance, hardness, cure, adhesion, holiday inspection, or others. In accorda