Basic Specialty Piping Systems Flashcards
What is the purpose of requiring due diligence on the part of all persons involved with the manufactured transport and storage of materials classified as hazardous?
To ensure a safe working environment
Both organic and inorganic compounds can be so strongly acidic, basic, explosive, flammable, oxidizing, poisonous, reactive, or toxic. What must they be designated as?
Controlled products
What property of class B6– reactive flammable materials makes them particularly difficult to process and transport?
Highly reactive, exposure to air or water will cause an immediate and rapid reaction
What are the characteristics of the materials in our process plants that create the need for the use of plastic and non-Farris specialty piping systems
They react not only with the surrounding environment, but within the materials used used for processing or transporting them.
What differentiates an organic and inorganic compound?
Carbon
Which WHIMIS classes tend to be much more hazardous, either to the environment or the general public if there is an escape to atmosphere?
Class C or higher
All affixed components of a piping identification system, must conform to the standards, established in the applicable:
A. Power piping code.
B. NFPA standard
C. Fixed piping system standard.
D. ASHRAE REGULATIONS
C. fixed piping system standard
Materials classified as hazardous require a piping label with ________ letters on a ________ background.
Black letters on a yellow background
Which label is the special type of workplace label designed for the oil industry. It is printed in several sizes and imprinted with four fields.
A PACE label.
NFPA labels are designed for use in compliance with fire safety standards. They are used to provide information to who?
The fire fighters.
What does PACE stand for?
Petroleum association for the conservation of the Canadian environment
true or false? The material contained in a piping system must be identified by a legend made of clearly legible letters and/or numbers and/or symbols, giving the name or identifier of the material contained within.
True
What are some common hazard warnings that we would find on piping systems?
Hot, pressurized, steam, electrical, liquids, gas, not in use, previously contained ____________.
Pipe identification labels should be repeated every 5 m. true or false?
False.
Every 3 m
Vessels may require additional labelling when chemical reactions change the material inside the vessel. True or false?
True
What is typically buried underground above underground piping?
A polyethylene ribbon displaying the same information as above ground piping systems in intervals no more than 30 inches apart
Materials classified as hazardous require a piping label with black letters on a yellow background, low hazard material labels require what colours of letters and background?
White letters on a green background
What type of piping is labelled with white letters on a red background?
Fire protection piping
What are some factors that must be considered in material selection for piping specialty systems?
The strength or concentration of the fluid to be handled.
The nature of operation of the system, continuous or intermittent.
Temperature and pressure of the fluid medium.
The ambient environment in which the system is to be installed.
The anticipated service life of the installation.
The skill of the local labour force that installs the piping system.
The applicability of any local building or construction codes.
What should be done a prior to applying thread ceiling on any threaded piping used for hazardous material systems?
Inspected to be clean and sharp with no defects or signs of galling.
What will dictate the configuration for the end preparation of pipe and fittings prior to welding or bonding?
The joining technique and procedures
What is the proper procedure for cleaning pipe to be welded for use in a caustic service?
Cleaning at least 6 inches back from weld both internally and externally with 10% acetic acid and hot air dried.
What methods may be employed to ensure a clean descaled metal surface for welding or coding alloy piping?
Pickling, abrasive blasting, mild cleaning and passivating
What is passivating?
Removed superficial iron or rust contamination and restores the protective oxide film by using a nitric acid solution, followed by neutralizing wash, and then rinsing and drying.
What is the common cause of concentrated localized corrosion in a piping system?
Similar metal joints
What will likely result if strain is imposed on a corroding metal?
It will likely rupture the protective film
What are the factors that accelerate or retard corrosion?
The duration of the attack temperature and acquired passivating from the attack of certain chemicals.
True or false? Anything that changes the condition from one place to another on a metal will act as a force to start the corrosion process.
True
What is the electrochemical corrosion prevention referred to as?
Cathodic protection.
What material is commonly used as a sacrificial anode?
Magnesium
Does an impressed current cathodic protection method commonly use an AC or DC rectifier?
DC rectifier
Impressed current anodes are made of materials that are low on the activity series or are nobler. Do these materials corrode faster or slower then a sacrificial type anode?
Slower
The classification of the product carried in the piping system, often dictates the procedures that must be used to do the maintenance and repair on the system or equipment. True or false?
True
What hazard is associated with opening a metal gas system for breathing air?
Contamination of the piping system caused by allowing entry of atmospheric air.
What is the focus of the procedures required to do maintenance and repairs on systems that contain or have contained any kind of hazardous material?
To protect the worker and the environment
Why should the appropriate MSDS sheets be reviewed for the proper solvent and solutions as prescribed by the company for cutting cleaning or decreasing pipe?
Using the wrong solvents or mixtures could be hazardous or even lethal
What should the employee receiving the safe work permit do before signing for the receipt of a safe work permit?
Verify that the pertinent tasks required of the operator have been checked off
Why does the pipe have to be grounded and bonded to any funnels and/or spill containers before actually opening a line?
To prevent static spark, that may ignite a flammable material
Which nitrogen compound is most commonly associated with the production of both fertilizers and explosives?
Ammonium nitrate
What are the two primary requirements for successful welding of titanium?
Cleanliness and the exclusion of all reactive gases, including air
What materials should be avoided for use with an ammonia service unless the dryness of the ammonia can be assured?
A. A105 Carbon steel.
B. Any 3000 series stainless steel.
C. copper, copper-silver, or zinc alloys
C. Copper, copper – silver, or zinc alloys.
What percent acetic acid solution is used for the final cleaning procedure for piping to be welded in a caustic service?
A. 10%
B. 25%
C. 5%.
A. 10% followed by a hot air dry
Why would a cyclic strain imposed on a corroding metal accelerate the rate of corrosion?
Repeated strain may rupture, a protective film, and exposed basement of further corrosion
Pipes or equipment that contain or may have contained flammable materials have to be grounded and bonded to any funnels and/or spill containers before actually opening the line. Why is this?
To prevent static sparks that may ignite a flammable material or vapour
