Liquid final

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?

Rise

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

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?

This is a grade E Combustible liquid.

In the United States, ownership of the OIL Record Book with the United States Government and it must be retained on board for a period not less than _____ years.

Three (3)

Within a SPECIAL AREA, discharge of clean or segregated ballast is allowed.

True

The greatest percentage of vapor in air that will form an ignitable mixture is known as what?

UEL

What are the two primary methods of Gas Replacement?

dilution and displacement

Oil may NOT be transferred unless ___________.

discharge containment equipment (i.e. dirt pans) are in place

What are the three main methods of refining crude oil into the various petroleum products?

distillation, cracking, purification

With an increase in temperature the volume of flammable and combustible liquids ________________.

expands

Purpose-built chemical tankers often use what type of framing?

externally framed with the stiffening placed outside the cargo tanks

High-Capacity Washing Machines are defined as any _____ machine with a throughput exceeding _____ cubic meters per hour.

fixed, 60

When discharging an oil cargo, the first consideration is to _________.

get the bow up

When hooking up a cargo hose to your vessel's manifold, you should use a(n) ______________.

insulating flange or single length of non-conducting hose

How can the effects of Free Surface be reduced or eliminated?

keep slack cargo minimized and ballast tanks filled

Explain what the Autoignition Temperature of a liquid is in your own words.

lowest point of ignition and combustion in a liquid. No lighter needed

On a vessel that required an Inert Gas system, _____ IG blower/fans are required, the combined capacity of which must be rated at ______% of the maximum discharge capacity of all the cargo pumps that can be operated simultaneously.

2, 125

What is the normal percentage of Oxygen in the air?

21%

Upon shutdown of the IG system, it is recommend the scrubber be flushed with seawater for a period of ____ to ____ minutes

30 to 60

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.

4

A standard Net Barrel of petroleum products is ________.

42 gallons at 60º F

Portable washing machines should be electrically bonded via the hose to the tank cleaning supply main and should be tested for continuity. A measurement of what is cause for rejection of the hose?

6 ohms of resistance per meter hose

IMO Regulations covering the stripping of NLS cargoes stipulates the remaining cargo in a tank and piping upon completion of stripping to be no more than ______ for category _______ substances.

75 liters for X,Y, and Z substances

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.

According to the textbook, what is the definition of Inert Gas?

A gas or mixture of gases lacking the necessary oxygen to support the combustion of hydrocarbons

"Clean Ballast" is the ballast in a tank which has been so cleaned that the effluent therefrom does not create a visible sheen or the oil content exceed ____ PPM.

Fifteen (15)

The lowest temperature at which a flammable liquid gives off sufficient vapor to ignite and continue to burn is known as what?

Fire Point (or Flame Point)

Inert Gas (IG) systems must be capable of generating inerted gasses that contain no more than ___% oxygen by volume

Five (5)

The lowest temperature at which a flammable liquid gives off sufficient vapor to form an ignitable mixture near its surface is known as what?

Flashpoint

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

The Hazard Profile of various chemical substances is developed by what group under the United nations?

GESAMP

A vessel designed to carry LNG or LPG are referred to as what?

Gas Carrier

Which of these valve types are(is) considered to be a throttling valve type:

Globe Valve

The smallest percentage of vapor in air that will form an ignitable mixture is known as what?

LEL

What publications can you consult for the compatibility of different chemical cargoes?

MSDS (Material Safety Data Sheets),Chemical Data Guide,USCG Compatibility Chart

Based on the vessels design and regulatory requirements, gaging methods of the cargo tanks will be classified in what three ways?

1) Open 2) Restricted 3) Closed

COW rules stipulate that the stripping system must be capable of removing oil at what rate?

1.25 times the throughput of all the tank cleaning machines operated

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° F

In the operation of Inert Gas (IG) systems, "Topping Up" is defined as what?

Adding additional inert gas into a tank to raise the pressure of the tank and prevent air getting in.

Oil product samples should be taken from the ______________.

All of the above

You may be able to avoid loss of suction in a pump by ___________.

All of the above

In tank cleaning and washing, what are "shadow areas"?

Areas of the inside of the tank where portable and fixed washing machines cannot clean. U

Which statement about a centrifugal cargo pump is TRUE?

B. It must have a positive suction

What is the name given to the bitter end of piping located in the bottom of each cargo tank?

BELLMOUTH

The standard unit of liquid volume used in the petroleum industry, as well as the tanker industry, is a ________.

Barrel

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?

Cargo Manifold

What is LEAST likely to be used to strip a cargo tank?

Centrifugal pump

Which pump must always be primed?

Centrifugal pump

What official document contains the list of cargoes that a vessel is authorized to transport?

Certificate of Fitness

What is the most common form of physical separation between cargo and non-cargo areas of a tank vessel?

Cofferdams

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.

Controlled

What are the four functions of the scrubber in an inert gas system?

Cooling, Removing the Solids, Removing the corrosives, and removing entrained water

What document is a checklist that contains items that must be inspected by the PIC and is verified by both the vessel PIC and the Terminal PIC before cargo transfer can begin?

DOI

What is meant by "thieving" a petroleum cargo?

Determining the amount of water (if any) in each cargo tank

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 difference between Dirty Ballast and Departure Ballast?

Dirty ballast means tanks are not cleaned beforehand and ballast water contains oil. Departure ballast is cleaner and only contains a fraction of the oil.

What device can be used to strip cargo from a tank and has the advantage of containing no moving parts?

Eductor

Inerted cargo tanks must have an atmosphere that contains no more than ___% oxygen by volume

Eight (8)

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?

Grade C Flammable Liquid

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

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?

Hydrostatic Pressure

MARPOL Annex ______ are the regulations for the prevention of pollution by oil.

I (One)

Why might shipowners opt to use an Inert Gas Generator (IGG) as opposed to a Flue Gas IG system.

IGGs are used on vessels that do not possess a ready supply of oxygen-deficient gas for use in the cargo tanks, or in situations where the quality of the inert gas may pose a risk of contamination to the cargo, They have also been installed because of their application to tank barges and the shift from steam to motor tankers.

MARPOL Annex _____ are the regulations for the control of pollution by noxious liquid substances.

II (Two)

Poisoning by toxic liquids can occur by three methods. What are these three methods?

INGESTION, INHALATION, SKIN CONTACT

A vessel loads edible oil in a deep tank through a manhole at the mid-length of the tank. In order to fill the tank to maximum capacity, what trim should the vessel have?

In level trim

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?

Independent takes / integral tanks

On modern tank vessels, how is the oxygen content within the atmosphere of a cargo tank controlled?

Inert gas systems

Which refers to the death of a petroleum product in a tank?

Innage

The Cargo Record Book is required on every tank vessel carrying what cargoes in bulk?

NLS (Noxious Liquid Substances)

A deep well pump is a type of ______________.

centrifugal pump

What is NOT a precaution to be taken when topping off?

Notify the engine room of the procedure.

The double-hull requirement for vessel construction was first mandated in what regulations?

Oil Pollution Act of 1990

Which regulation first established the requirement for new oil tanker construction to be made of the double-hull design?

Oil Pollution Act of 1990 (OPA 90)

Existing vessels and new tanks vessels under 70,000 dwt must have ______ slop tank(s)

One (1)

When loading bulk liquid cargo, what is the FIRST action you should take if a cargo valve jammed open?

Order the dock man to shut down.

The Load Line on a vessel is also known as what?

Plimsoll Mark

Vessels transporting noxious liquid substances in bulk must have an approved _____ manual on board

Procedures and Arrangements (P&A)

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?

Product Tankers,General Tankers,Gas Tankers

The services of a marine chemist and obtaining a marine chemist certificate are required to perform what kind of work?

Testing, inspection, and issuing certificates when conducting hot work in or on cargo tanks or fuel oil tanks, as well as pumps, pipelines, heating coils, or fittings which may be connected to the tanks.

Details of COW machines operating pressure can be found in what manual for the vessel?

The crude-oil-washing operations and equipment manual.

The number of tank cleaning machine that can be operated simultaneously is usually dependent on what?

The dimension of the supply main and ability to maintain the design pressure at the machine.

For a single-hull vessel, when performing the bottom wash of a tank, what is meant by cleaning over a dry bottom?

There is no more than a small quantity of oil near the stripping suction with no accumulation of oil elsewhere in the tank.

Which statement is TRUE of centrifugal pumps aboard tank vessels?

They are gravity-fed.

What is NOT an advantage of centrifugal pumps over reciprocating pumps?

They require priming for stripping.

A designated individual must serve as _____ for an enclosed space entry and should have no other additional assigned duties during the entry that may distract their attention or provide them a reason to leave the immediate location.

a standby

Petroleum cargo tanks should not be topped off at deck level when loading on a cold day because _____________.

a subsequent temperature rise will cause the cargo to overflow

Cargo transfer operations on a tank vessel need NOT be stopped when ___________.

a tug comes alongside while the tanker is loading grade D and E cargoes

For oil transfers: In an emergency, the transfer facility must be able to stop the flow of oil to the vessel within what time limits?

a) 60 seconds for facilities before Nov. 1, 1980 b) 30 seconds for vessels before Nov. 1, 1980

a). What system was established by the OCIMF for the standardization and sharing of vetting Inspection data for oil and product tankers? b.) What similar system did chemical company charterers establish to accomplish the same thing?

a) SIRE System b) CDI

Define the following terms: a.) Deadweight b.) Displacement c.) Lightship d.) Trim

a) Total weight of cargo plus crew, stores, water, fuel, ballast b) Weight of water displaced by the hull equal to the vessel weight when floating free c) Weight of empty vessel d) Difference between forward and after drafts

Ullage measurements are taken from the top of the liquid to __________.

an above-deck datum, usually the top of the ullage hole

The terminal indicates to you that they are going to use a booster pump to assist the discharging operation. You start the discharge, and in a few minutes the pressure drops sharply. This could be a result of the _______________.

booster pump coming on the line an discharging properly

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 ________.

organic acids

The IG system of a vessel must maintain a _____ deck pressure of ______ inches water gauge during the operating life of the vessel.

positive, 4

Your tank vessel is loaded down to her marks, and you find that she has too much trim by the stern. To adjust the trim you may ________.

shift bunkers forward

Your tank vessel is fully loaded, and you find that she is down slightly by the head. To adjust the trim, you may _____________.

shift cargo aft

In order to reduce the accumulation of static electricity while loading petroleum products, you should ________.

start to load slowly

Functions aboard a tanker or tank barge such as connecting, disconnecting, and topping off must be supervised by __________.

the person designated as "person in charge"

The distance between the surface of the liquid and the tank top in a cargo tank is called ___________________.

ullage