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Liquid Cargo Quiz 1
Terms in this set (40)
A vessel that utilizes a ________ type of Vapor Control System, makes use of PV Valves on Mast Risers or King Post Vents to physically direct cargo vapors well above the deck.
In a tanker built using the Mid-Deck design, what physical principal is used to prevent oil outflow in the event that the cargo tanks are breached?
Friction caused by the flow of Petroleum liquid through extensive piping systems, strainers, and filters; petroleum and water mixtures in the cargo tanks; and splashing or agitation of petroleum liquids such as flow through a nozzle can cause what to occur?
Static accumulation can lead to fire or an explosion
The trade of a tank vessel is defined by the type of cargoes routinely carried over a number of voyages. What are the three categories that predominate this classification?
crude oil carriers, product carriers, and parcel carriers
In Parcel tanker design, what type of cargo tanks form an essential part of the hull structure and contribute to the strength of the vessel?
They are externally framed vessels
On modern tank vessels, how is the oxygen content within the atmosphere of a cargo tank controlled?
Inert Gas Systems
The smallest percentage of vapor in air that will form an ignitable mixture is known as what?
The lower explosive limit
The standard unit of liquid volume used in the petroleum industry, as well as the tanker industry, is a ________.
When ANSI Flanges are employed a bolt must be placed in every other hole at a minimum, and in no case should less than ________ bolts be used in the connection.
Purpose-built chemical tankers often use what type of framing?
A vessel designed to carry LNG or LPG are referred to as what?
What are the three main methods of refining crude oil into the various petroleum products?
distillation, cracking, purification
The Permissible Exposure Limit - Time Weighted Average describes the maximum airborne concentration of a substance that a worker may be exposed to over what period of time?
8-hour workday and a 40-hour work week.
The Cargo Record Book is required on every tank vessel carrying what cargoes in bulk?
Noxious Liquid Substances
What publications can you consult for the compatibility of different chemical cargoes?
USCG Compatibility Chart in 46 CFR Part 150
MSDS (Material Safety Data Sheets)
Chemical Data Guide for Bulk Shipment by Water
The lowest temperature at which a flammable liquid gives off sufficient vapor to form an ignitable mixture near its surface is known as what?
A tank on your vessel is empty of its liquid cargo, but a mixture of air and cargo vapor remains in the space. The cargo vapor has a Vapor Density of 0.87.
Will the cargo vapors rise and collect in the top of the tank or sink and settle to the bottom of the space?
Poisoning by toxic liquids can occur by three methods. What are these three methods?
ingestion, skin contact, inhalation
The Hazard Profile of various chemical substances is developed by what group under the United nations?
What type of valve provides a minimum exit velocity of 30 meters per second, thus projecting the exiting vapors aloft in the event of an over-pressure condition?
High-velocity vent valve
What types of Bottom Piping System is designed with minimal piping in the cargo tanks, but instead uses gates or valves to allow cargo to move to the aftermost tanks for pumping when the vessel is trimmed down by the stern?
free flow piping system
Which of these valve types are(is) considered to be a throttling valve type
What official document contains the list of cargoes that a vessel is authorized to transport?
Certificate of Fitness for the Carriage of Dangerous Chemicals in Bulk
Which regulation first established the requirement for new oil tanker construction to be made of the double-hull design?
Oil Pollution Act of 1990
What type of Bottom Piping system is characterized by one or more main lines oriented in a fore-and-aft direction from the cargo tanks to the pump room?
Direct Piping System
What is the normal percentage of Oxygen in the air?
In order to reduce the accumulation of static electricity while loading petroleum products, you should ________.
start to load slowly
How can the effects of Free Surface be reduced or eliminated?
by creating pocketing
You are on a multiple-product chemical tankship and scheduled to load a cargo classed as an aromatic amine. This cargo is incompatible with cargoes classed as ________.
The lowest temperature at which a flammable liquid gives off sufficient vapor to ignite and continue to burn is known as what?
Reid Vapor Pressure is the measured vapor pressure that results when a sample of liquid in a closed container is heated to what temperature?
100 degrees F
Your vessel is carrying a liquid cargo that has a flash point of 25º F and Reid Vapor Pressure of 6.0 psi. According to the USCG Classification of Liquids, what is the Grade of your cargo?
The greatest percentage of vapor in air that will form an ignitable mixture is known as what?
Upper explosive limit
Explain what the Autoignition Temperature of a liquid is in your own words.
lowest temperature a substance will ignite
What is the name of the bitter end of the on-deck cargo piping that forms the interface between the vessel and the shore facility?
What is the name given to the bitter end of piping located in the bottom of each cargo tank?
Your vessel is carrying a liquid cargo that has a flash point of 165º F. According to the USCG Classification of Liquids, what is the Grade of your cargo?
A standard Net Barrel of petroleum products is ________.
42 gallons at 60 degrees F
What is the most common form of physical separation between cargo and non-cargo areas of a tank vessel?
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