100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
NACE CP1 Book Chapters 5-10 Questions and Answers (Graded A+) $10.19
Add to cart
Quickly navigate to
Preview
  2.  
  3. NACE CP1
  4.  
  5. NACE CP1

Exam (elaborations)

NACE CP1 Book Chapters 5-10 Questions and Answers (Graded A+)
 0 purchase
  • Course
  • NACE CP1
  • Institution
  • NACE CP1

Coatings formulated from coal tar pitch or natural asphalt, reinforced with glass and a felt wrapper, used less today because of toxicity - ANSWER-bituminous enamels Coatings that consist of polyolefin or polyethylene extruded over butyl or asphalt mastic adhesive, high impact resistance and res...

[Show more]

Preview 2 out of 7  pages

Document information

  • January 7, 2024
  • 7
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

Subjects

  • nace cp1 book chapters 5 10 questions and answers
  • nace cp1 book chapters 5 10 questions stuvia
  • what is the first line of defense in corrosion con

Written for

  • NACE CP1
  • NACE CP1

Seller

avatar-seller
IMORA

Reviews received

Content preview

NACE CP1 Book Chapters 5-10
Questions and Answers (Graded A+)

In complex structures, always select materials that are ____ each other in the galvanic
series that will exhibit ____ voltage differences - ANSWER-near, little to no

What is the first line of defense in corrosion control programs? - ANSWER-coating

If the structure is coated, it is necessary to protect only the metal exposed at ____ -
ANSWER-holidays

Pipeline coatings designed for underground use do not have good resistance to ____
light, so ____ is to be avoided - ANSWER-UV, sunlight

Coatings formulated from coal tar pitch or natural asphalt, reinforced with glass and a
felt wrapper, used less today because of toxicity - ANSWER-bituminous enamels

Coatings that consist of polyolefin or polyethylene extruded over butyl or asphalt mastic
adhesive, high impact resistance and resist holiday development - ANSWER-extruded
polyolefin and polyethylene

Coatings that consist of a primer, corrosion sealant inner layer, mechanical protective
outer layer backing (usually polyethylene or polybutylene), prone to disbonding if not
properly tensioned - ANSWER-tape coatings

Coatings that consist of powdered resin electrostatically sprayed onto heated pipe,
moisture absorption can be a problem - ANSWER-fusion boned epoxy (FBE)

Coatings that consist of liquid resin (epoxy) and a curing agent, resistant to impact and
abrasion damage - ANSWER-two-component liquid resin coatings (two part epoxy)

What is essential for the coating to bond properly to the metal? - ANSWER-proper
surface preparation and application (hot or cold)

What environmental conditions must be checked during initial inspection before coating
application? - ANSWER-temperature, humidity, dew point

What should be checked for visually during coating application? - ANSWER-disbonding,
damage, checking, cracking, chalking, etc. (check if reconditioning is required)

, Why are inhibitors added to liquids? - ANSWER-to change the characteristics of the
liquid or form protective films on the metal surface

How does sunlight exposure affect a coating? - ANSWER-changes porosity, brittle
(changes properties)

What are the following materials used for: heat shrink sleeves, hot and cold applied
tapes, two-component liquid resins, coal tar mastics, fusion bonded epoxy? - ANSWER-
girth weld coatings

If you have to use dissimilar metals, what must you do? - ANSWER-electrically isolate
them

It's better to install more test stations rather than fewer, but where should test stations
definitely be installed? - ANSWER-buried isolating fittings, crossings, electrical bonding
of joints

What are potential measurement test stations used to monitor? (3) - ANSWER-
effectiveness of CP, stray current effects, locate areas of active corrosion (no. 12 AWG
insulated wires, thermite-welded to pipe)

What are IR drop (current span) test station used for? - ANSWER-to measure
magnitude and direction of current flow on pipeline (pipeline acts as resistor, current
determine by measuring IR drop across span of test wires

What is the purpose of a casing? - ANSWER-support dynamic loads caused by road
traffic or trains to prevent harm to the pipe

Wherever possible, isolating joints should be installed.... - ANSWER-above grade (or
needs test station)

Coupons allow for ____ ____ ____ measurements without interrupting the rectifier, and
can measure protective current density of a ____ of known size - ANSWER-instant off
potential, known size

Do not use larger than a ____ charge for carbon steel pressure pipe when thermite
welding wires onto steel - ANSWER-15 gram

Underground mechanical connections are made with a ____ and a ____ epoxy for test
leads - ANSWER-clamp, conductive (not preferred, easily broken by corrosion)

The efficiency of a galvanic anodes depends on the ____ of the anode and the ____ to
which it is installed - ANSWER-alloy, environment

Anode efficiency is generally about ____ for Mg, ____ for Zn, and ____ for Al (but can
vary) - ANSWER-50%, 90%, 90% (range)

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller IMORA. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $10.19. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

69252 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 15 years now

Start selling
$10.19
  • (0)
Add to cart
Added