Download Materials 2 Exam 1 - Materials, Methods and Equipment I | CM 2131 and more Exams Introduction to Business Management in PDF only on Docsity!
Test 1
What is the highest and lowest metal on the Galvanic Scale? High-‐Magnesium Low-‐Platinum
Efficient and economic type of blasting sand graded flint and hard wood silica
All coating systems require what4 considerations? Surface Prep, Primer, intermediate, and finish
Digging bucket on backhoe can excavate material while a loader can lift materials
T-‐Anodic smaller than Cathodic corrosion=more corrosion F-‐ corrosion of iron consists of an electro-‐fusion process T-‐altering environment is one of the simplest and least expensive methods of corrosion control when applicable F-‐ one reason zinc is used in galvanizing is because it is less active than steel on galvanic scale F-‐Over design of structural members is most typical method of corrosion control F-‐Crevice corrosion can generally be stopped by applying protective coating over crevice F-‐Coating over mill scale will ensure that the mill scale is adequately adhered to steel surface, thus preventing corrosion underneath F-‐In pitting corrosion, the larger anodic area contacting electrode, the more rapid pitting will be F-‐ Dz dz F-‐Cathodic protection of underground pipelines is most effective in dry soil T-‐Flame Clean is not a recommended method T-‐Solvent clean is often used in production line set up because less labor is required and there is no dust F-‐yellow tag means only competent person is allowed on scaffold F-‐most expensive scaffolding is framework scaffolding F-‐ Tube and clamp scaffold is the fastest to erect
Name the four types of corrosion: Galvanic, Crevice, Pitting, Corrosion under mill scale
What are the Vehicles of protective coating? Solvent and resin
Name the 5 methods of corrosion control: Altering the envoronment, use corrosion resistant materials, cathodic protection, barrier b/w matl and environment, over-‐ design
ʹdzͳʹdzǡ ͷ
Safety is the number one concern with scaffolding
What are the classifications of dozers? List the ratings of each Light:40-‐80 horsepower, 3-‐7tons of draw bar pull Medium: 60-‐108 horsepower, 8-‐14.5 tons of draw bar pull Heavy: 110-‐700 horsepower, 15&up tons of drawbar pull
Dozers are rated by: horsepower and draw bar pull
DFT/%SBV=WFT
Test 2
F-‐ brand name of heat transferring cement is called CalCoat 127 F-‐Fireproofing is to insulate steel>> temp for indefinite period of time T-‐ mineral wool and glass wool are made of slag rock F-‐ Galvanized jackets are the most common jackets
List the 6 high temp design considerations: protective heating, heat control, heat conservation, personnel protection, fire protection, sound control
High piping temperature is 70 degrees F and up and low is 69 degrees F and down
What high temperature design consideration is associated with maintaining strict process temperature tolerance? Heat control
List the four low temperature insulation materials: cellular glass, urethanes, fiberglass, cork
List the four types of insulation securement : tie wire, banding, pins, studs
List the insulation finishes: metallic jackets and glassfab
3 heat sources of tracers: steam, hot water, resistance wire
2 duel temperature insulation materials: fiberglass and cellular glass
100% closed cell structure material: cellular glass
list three major functions of protective heating: freeze protection, keep materials fluid, improve viscosity
Breathing mastics are for high temperature applications, while vapor barrier mastics are for low temperature applications
Insulation pins are applies by what two methods? Stick pin( adhesive) weld pin (welded)
A gate valve is designed to be used completely open or completely closed.
A check valve is designed to prevent reverse flow
OLETS are an example of reducing, weld intersection that can be put onto existing pipe
Thermo well measures the operating temperature of a liquid in a pipe, while a temperature gauge displays the temperature inside a pipe
A thermal loop prevents damage to connected equipment
List 4 major classifications of trenchers: plow, rock cutter, ladder, wheel
List 4 classifications of concrete pumps: hydraulic, squeeze, pneumatic, progressing cavity
Arch Weld uses power to create and maintain electric arc between an electrode and the base material to melt materials at the welding point.
Of the three welding processes, heliarc welding is gas tungsten arc welding and stick welding is shielded metal arc welding
Weld symbol, a horizontal line is a reference line and an open flag means the weld is made in fabrication
What is the main reason to use T or H slider pipe supports? SO the insulation is not crushed
What is the difference between a trunnion and a dummy leg? Trunnion-‐ side support welded to pipe Dummy Leg-‐ welded to elbow or fitting that changes direction
Standard wall thickness of pipe schedule 40 is the same up to ͳͲdz nominal pipe size
List 5 details needed to order a flange: pipe size, face, material type, rating, type
