NACE CIP 2 Study Guides Questions with Answers Best Rated A+, Exams of Nursing

Download NACE CIP 2 Study Guides Questions with Answers Best Rated A+ and more Exams Nursing in PDF only on Docsity! NACE CIP 2 Study Guides What is the cause of chalking in epoxy coating - AnswerUV or radiation exposure What is polymerization cured coating? - AnswerTwo parts mixed together just prior to use Examples of non-convertible coatings - Answer1. Chlorinated rubber 2. Vinyl 3. Acrylic 4. Bituminous Non-convertible curing def. - AnswerNo chemical change during cure cycle Convertible curing def. - AnswerSome chemical change during cure cycle What info should be included when sending samples to a lab? - Answer1. Identity of materials 2. Properly packed/labeled samples 3. Chain of custody form 4. Type of analysis that is expected and the concentrations of interest Specialized tests or equipment coating inspectors may encounter - Answer1. AA/AE Atomic Absorption/Emission 2. ISP Induction coupled plasma Spectrometer 3. GLC Gas liquid chromatographs 4. IR, FTIR, FTIR-ATR INfrared spectrophotometers 5. DSC Differential scanning calorimeters What is a cathodic dis-bondment test? - AnswerProcedure to determine how easily a coating loosens from a substrate or develops holidays as a result of normal soil potentials Individuals who perform surveys - Answer1. O-Cat or S-cat tech 2. NACE coating specialist 3. NACE Level III 4. Coating Inspector w/field experience 5. Coating manufacturer representative 6. Maintenence engineer with specific plant knowledge. Coating survey steps - Answer1. Understand scope 2. Gather team 3. Develop survey plan 4. Review standards 5. Agree on format 6. Delegate various tasks 7. Eveluate existing coating 8. Delegate various tasks 9. Evaluate existing coating 10. Gather additional info 11. Summarize data 12. Prepare maintenance plans 13. Prepare reports/input data 14. Submit final survey reports. List some of the primary reasons surveys are performed - Answer1. Plan maintenance. 2. Prioritize work 3. Budgetary concerns 4. Determine value of assets 5. Legal compliance NACE CIP 2 Study Guides Definition of a coating survey - AnswerGather baseline info needed to plan maintenance coating procedures What are faying surfaces and why not galvanize them? - AnswerSurfaces that depend on friction to hold galvanizing it may/will reduce friction if they are galvanized Common problems seen during the usual inspections of HD galvanized items - Answer1. Cracking 2. Peeling 3. Bare spots 4. Lumps 5. Blisters 6. Flux inclusions 7. Ash inclusions 8. Dross inclusions Post galvanizing treatments and why - AnswerTo Remove Thickness: Roll, Wipe, Centrifuge/Air Blast To change properties/To alloy: Annealing Temperature range for galvanizing kettle - Answer820-850 F Purpose of pickling - AnswerHydrochloric or sulfuric acid bath to remove oxides and mill scale Purpose of caustic cleaning - AnswerAcid bath or caustic to remove dirt, oil and grease Stages of hot dip process - Answer1. Surface prep. 2. Galvanizing 3. Post treatment 4. Inspection Hot dip galvanizing safety - Answer1. Can stay for some time 2. Molten metal splash 3. Nascent hydrogen above kettle Usual layers of galvanized coating consists of: - Answer1. ETA=100% Zn 2. ZETA= 94% Zn 6%Fe 3. DELTA= 90% Zn 10 Fe 4. GAMMA= 75% Zn 25% Fe What is hot dip galvanizing? - AnswerCoating iron or steel with zinc at temperatures of 820-860 F If a maintenance coating to be applied is incompatible with the existing coating system__________may occur - AnswerCurling NACE CIP 2 Study Guides Proper safe accurate operating procedure for low voltage holiday detector - AnswerGround equipment and set for coating thickness VS voltage. Keep probe in contact with work, move slowly across surface. Don't oversaturate sponge Standards used for dry film measurement of coatings over concrete - AnswerASTM-D6132-97 and SSPC- PA9 DFT of coating on concrete can be measured by: - AnswerUT thickness guage Which organization produces comparator plates for various prepared concrete surfaces? - AnswerInternational concrete repair institute Disadvantages of plural component airless spray over single piston: - Answer1. Higher costs 2. Education for mechanic is higher 3. Heaters require HV electric 4. Applicators job is more difficult Advantages of plural component airless over single piston: - Answer1. Automatic, accurate material mixing 2. Ability to spray thick materials w/o thinning 3. Ability to spray materials 2/short pot lives. 4 stages powder goes thru when heat is applied? - Answer1. Flow 2. Wetting 3. Gel 4. Curing Two curing categories of powder coating - Answer1. Thermoplastic: Softens when heated 2. Thermo- setting: Hardens when heated Characteristics of flouropolymer coatings? - Answer1. Non-stick 2. High temperature resistance Two main types of fireproofing coatings - Answer1. Passive 2. Intumescent Three main types of anti-fouling coatings - Answer1. Ablative 2. Self smoothing 3. Foul release What are anti fouling materials and how do they work? - AnswerThey are materials that make ships hulls distasteful, or too slick for bio-fouling material to attach NACE CIP 2 Study Guides Surface prep for lining installation - AnswerWhite metal blast SA3/NACE1/SSPC 5 Describe wicking - Answer1. Liquid travels along fibers path and can cause substrate to corrode, blister or delaminate What does re-enforcing add to a resin? - AnswerStrength Some resins used in re-enforced linings: - Answer1. Polyester 2. Epoxy 3. Vinyl ester Lining Definition - AnswerA coating normally in immersion service Thermal spray safety practices - Answer1. HP rated hoses 2. Never use compressed air to clean work area or clothing 3. Don't use plant air for breathing air Common hazards associated with specialized applications - Answer1. Fume/dust inhalation 2. Electrical shock 3. Burns 4. Falling objects Disadvantages of water jetting - Answer1. Expensive equipment 2. Water injection danger 3. Surface needs anchor profile 4. Collection/Disposal of water Water jet advantages: - Answer1. Less dangerous 2. Better air quality 3. Less stringent respiratory requirements 4. Less environmental damage 5. Less clean up Water jetting safety items include: - Answer1. Barricade work area 2. Protect electrical equipment 3. Electrical connections dry 4. Make sure hoses and fittings are not worn excessively and are rated for use Two condsiderations w/regards to back thrust - Answer1. Operator body weight 2. Alternating operators (fatigue etc.) Water jetting is effective for removing: - Answer1. Surface oil or grease 2. Rust 3. Concrete spatter 4. Existing coatings NACE CIP 2 Study Guides Typical water jetting team - Answer1. Nozzle operator 2. Pump operator 3. Additional operators or workers Requirements for NACE 5/SSPC-SP12 - Answer1. Visual contaminants 2. Non-visual contaminants Robotic water jetting - Answer1. A cleaning vehicle that attachs itself by vacuum, cables or magnets and is controlled by a single operator Inspection concerns during centrifugal blasting - Answer1. monitor dust collector 2. monitor amperage of motors 3. monitor conveyor line 4. monitor line speed 5. inspect surfaces leaving line for spec. conformance Well balanced operating mix of abrasives will: - Answer1. provide consistency of finish 2. Ensure uniform abrasive coverage Functions of a centrifugal blast machine separator include: - Answer1. Control size of abrasive mix 2. Remove contaminants 3. Control abrasive consumption Low amperage reading on centrifugal blast machine could signify: - Answer1. Abrasive starved wheel 2. Flooded or choked wheel Efficiency of a centrifugal blast wheels depends on: - Answer1. abrasive operating mix 2. abriasive size 3. quantity and direction of thrown abrasive 4. condition of feed parts Centrifugal blast systems have these elements - Answer1. Centrifugal abrasive blast wheel 2. Blast cabinet 3. Material handling system 4. Abrasive recycling system 5. Dust collector 6. Abrasives Portable centrifugal blast systems can be used on: - Answer1. Ship decks, hull sides and bottoms 2. Storage tanks 3. Concrete floors 4. Highways and bridge decks Centrifugal blast conveyor systems are commonly used for cleaning: - AnswerPlate and rolled structural shapes NACE CIP 2 Study Guides Properties of concrete - Answer1. Inorganic 2. Hard 3. Good compressive strength 4. Improve with age Three NACE standards and classifications. Name and define them. - AnswerStandard practice: Details of construction, methods of treating required to reduce corrosion. Test methods: Ascertain characteristics of material design and operation. Materials requirement: State necessary characteristics when corrosion is a factor in the selection application or maintenance of a material. NSB - AnswerNational Standards Body SDO - AnswerStandards Development Organization Difference in sacking and stoning - AnswerSacking uses a cement sack or rubber sponge for application and stoning uses a carborendum brick or abrasive block Advantages of watersetting and wet abrasive blasting - Answer1. Quickly cuts surface 2. Washes dust away 3. Reduces abrasive and concrete particles in air What is the joint NACE #6/SSPC-SP 13 blast standard for surface prep of concrete? - AnswerRequirements for surface prep by mechanical, chemical or thermal means Surface prep is generally performed by: - Answer1. Abrasive blast 2. Hand or Power tool 3. HP water jet 4. Acid Etch 5. Stone 6. Centrifugal 7. Scarify Laitance: - AnswerWeak surface layer of water, rich cement mixture caused by upward movement of water Efflorescence: - AnswerCondition caused by water passing thru concrete and salts reacting with CO2 to create a fluffy, crystalline surface deposit Reasons to coat concrete: - Answer1. Waterproofing 2. Freeze protection 3. Chem. resistance 4. Decontamination 5. Abrasion protection 6. Color coding 7. Contents protection 8. Improved cleaning 9. Skid resistance 10. Steel Re-enforcement NACE CIP 2 Study Guides Explain Gunniting: - AnswerProcess of sprayiny or slinging concrete onto a surface as a coating How do ambient conditions and vibration affect poured concrete? - Answer1. Hot weather will accelerate cure and cause voids and low strength surface 2. Vibration can cause heavy aggregate to sink resulting in a weak, sandy surface known a laitance What is the process concrete cures by? - AnswerHydration