NACE CIP L2 Exam Questions with correct Answers
Describe air turns - ANSWER-eliminates air stratification. 1-2 Turns is sufficient
Below what RH does corrosion virtually cease? - ANSWER-40%
2 ways to reduce RH of boundary layer- - ANSWER-increase surface temp & dehumidification
2 types of dehumidification equipment: - ANSWER-refrigerant & desiccant
Benefits of dehumidification - ANSWER-dries air, lowers dew point, holds surface during
coating application, holds blast with dry air, permits blasting the entire surface.
Electronic Hydrometers - ANSWER-test RH, air temp, dew point
Basic centrifugal blast set up - ANSWER-Tumbling mill, multi table, plain table,swing table, custom designs
Centrifugal blast with conveyor: - ANSWER-plate, rolled shapes, large trusses, grinders
Portable Centrifugal systems - ANSWER-ship decks, storage tanks, concrete floors, highways ans bridges
Centrifugal systems composed of - ANSWER-throwing wheel, enclosure, recycling system, dust collector and vent pipe, abrasive and material handling (in fixed system)
Blast wheel efficiency depends on - ANSWER-mix, size of abrasive, velocity coming off the wheel, quantity and direction of thrown abrasive & the condition of feed parts
Low Amp reading on centrifugal machine could signify - ANSWER-abrasive starved wheel or flooded/ choked wheel
Centrifugal separator function - ANSWER-controls size of abrasive, removed sand/spent abrasive/rust/dirt, controls abrasive consumption
WJ-1 (visual cleanliness) comparable to: - ANSWER-ISO SA3
Waterjetting effectivley removes - ANSWER-surface oil and grease, rust , concrete spatter, existing coating, water soluble contaminants that aren't removed during abrasive blast, ship hauls or off short platforms Back thrust - ANSWER-1/3 worker weight, causes fatigue
Thermal spray safety - ANSWER-Use hoses rated for high pressure, never clean with compressed air, do not use plant air in breathing apparatus, reduce to less than 30psi for cleaning
Lining - ANSWER-coating usually used in immersion service
Resins used in reinforced linings - ANSWER-Polyester Epoxy & vinyl ester
Strength - ANSWER-the main reason to reinforce a lining
2 types of fireproof coatings - ANSWER-Cementitious (cement) & intumescent (swells or bubbles)
Flourpolyer - ANSWER-non stick and high temp and chemical resistance
Thermoplastic - ANSWER-soften when heated
Thermoset - ANSWER-harden when heated
Disadvantages of Plural component spray over single component spray - ANSWER-
higher cost, high volt heaters are required, more qualified operator, more hoses for operator to work with
Advantages of Plural component spray over single component spray - ANSWER-
Accurate mixing without human element, sprays very thick solvent free materials without
thinners & sprays materials with very short pot life.
2 major classes of rubber - ANSWER-natural and synthetic
Natural rubber - ANSWER-derived from latex from Hevea trees, and coagulated with acetic or formic acid. Unsaturated hydrocarbon (polyisoprene)
Synthetic rubber - ANSWER-1 or more properties of natural rubber and any one of a group of man-made elastomers.
Vulcanization - ANSWER-Physicochemical change from cross linking the unsaturated hydrocarbon chain of natural rubber with sulfur and applying heat
3 factors the affect the properties of vulcanized products - ANSWER-% of sulfer and accelerator used, temp during curing process and time of cure.
Methods used to volcanize rubber - ANSWER-Autoclave, internal steam cure, exhaust steam cure (atmospheric) hot water cure and chemical cure
Les avantages d'acheter des résumés chez Stuvia:
Qualité garantie par les avis des clients
Les clients de Stuvia ont évalués plus de 700 000 résumés. C'est comme ça que vous savez que vous achetez les meilleurs documents.
L’achat facile et rapide
Vous pouvez payer rapidement avec iDeal, carte de crédit ou Stuvia-crédit pour les résumés. Il n'y a pas d'adhésion nécessaire.
Focus sur l’essentiel
Vos camarades écrivent eux-mêmes les notes d’étude, c’est pourquoi les documents sont toujours fiables et à jour. Cela garantit que vous arrivez rapidement au coeur du matériel.
Foire aux questions
Qu'est-ce que j'obtiens en achetant ce document ?
Vous obtenez un PDF, disponible immédiatement après votre achat. Le document acheté est accessible à tout moment, n'importe où et indéfiniment via votre profil.
Garantie de remboursement : comment ça marche ?
Notre garantie de satisfaction garantit que vous trouverez toujours un document d'étude qui vous convient. Vous remplissez un formulaire et notre équipe du service client s'occupe du reste.
Auprès de qui est-ce que j'achète ce résumé ?
Stuvia est une place de marché. Alors, vous n'achetez donc pas ce document chez nous, mais auprès du vendeur millyphilip. Stuvia facilite les paiements au vendeur.
Est-ce que j'aurai un abonnement?
Non, vous n'achetez ce résumé que pour 8,99 €. Vous n'êtes lié à rien après votre achat.
