For proper air temperature control in an air conditioning system using chilled water circulation, which condition should remain constant regardless of load changes ______.
chilled water system supply temperature
compressor discharge temperature
squirrel cage fans are used
compressor suction pressure
Before doing any work on a hydraulic system equipped with accumulators, you should_______.
bleed off all stored energy from the accumulators
drain the accumulators and purge with oxygen
completely charge the accumulators to prevent system energy loss
pump the hydraulic fluid into the accumulators to prevent fluid loss
The first step when beginning to set the slide valves on a duplex reciprocating pump is to_________.
center the steam pistons in the cylinders
open the relief valve to prevent accidental starting
ensure the balance piston is on the downstroke
measure the present port openings to ensure reassembly will be the same
To safely remove the piston rod packing from the steam end of a reciprocating pump, you should_________.
use a packing hook
open the throttle valve and "blow" the old packing out
do nothing, as this type of pump utilizes O-rings in lieu of packing
open the steam chest and pry the packing loose with a scraper
In order to properly remove air from the casing of a centrifugal pump when starting, the pump should have a ______.
vent valve attached to the casing at the top of the volute
positive head
negative suction head
mechanical seal
When fire safe or fire resistant fluid is to be used in a hydraulic system, it is important that _______.
the fluid be compatible with all seal materials used
separate lube oil supply be furnished for the hydraulic pump
the resultant pressure, due to the increase in fluid viscosity, is not excessive
the fluid does not dissipate too much heat
To properly remove packing from a valve stuffing box, you should use a ________.
packing puller
sharpened rod of silver solder
chisel and hammer
screw driver
When replacing ball bearings on an electric motor shaft, you should ________.
apply even force to the inner race
tap the outer race with a mallet
apply even pressure to the outer race
apply pressure evenly to both the inner and outer races
To remove a hand held right-handed straight cut reamer after it has gone all the way through a hole, you should _____.
turn the tap wrench clockwise, simultaneously raising the reamer
tap the reamer out with a softfaced hammer
turn the tap wrench counterclockwise, simultaneously raising the reamer
work the reamer side to side to dislodge it
An acetylene pressure regulator should never be adjusted to maintain pressures exceeding (15psig) 103.4 kPa because_____.
this gas become extremely unstable under this condition
the relief valve will lift
the fusible plug will blowout
rapid depletion of acetylene is hazardous
When securing a flash-type evaporator for an extended period of time, you should______.
completely drain the unit
tightly seal the unit to exclude air
fill the unit with saltwater
fill the unit with descaling compound
Why should a person performing maintenance on an air compressor wire and tag the system valves closed?
To protect the operator and the equipment.
To prevent escape of air
To protect the valves
To prevent escape of water
Which of the following conditions can contribute to accidents?
Unsafe conditions
Good housekeeping
Inspections
Intelligent work habits
Fire doors are released by a/an__________.
method that automatically releases the door in the event of a disruption of control system power
hydraulic directional valve that automatically releases the door in the door in the event of a disruption to the control power system
spring-loaded catch that automatically lifts to release the door in the event of the presence of a fire
pneumatic heat sensor
Which of the following is an example of biological hazards? I. Exposure to high temperatures, too high levels of relative humidity II. Zoonotic diseases III. Fungal diseases
II and III
I and II
I and III
I, II and III
How can ergonomics improve health and safety to the work place? I. reduces the potential for accidents II. reduces the potential for injury and ill health III. improves performance and productivity
I, II, and III
Which of the following aspects that ergonomist should consider to assess the fit between person and their work? I. the job being done and the demands on the worker II. the equipment used III. the senses, especially vision, hearing and touch
Which of the following is/are the typical ergonomics problems found in the workplace like display screen equipment? I. The screen is poorly positioned - it is too high/low/close/far from the worker, or is offset to one side. II. The mouse is placed too far away and requires stretching to use. III. Chairs are properly adjusted to fit the person, forcing awkward and comfortable postures.
Some of the hazardous of working with electric power tools may be avoided if the operator insures that _________. I. they are properly grounded II. Eye shields and gloves are worn III. Loose clothing and jewelry are not worn
I, II & III
I only
I & II
II & III
Some of the hazards associated with air-operated power tools may be avoided if the operator would_________. I. inspect the hoses for cracks and other defects II. Remove jewelry and loose clothing III. Bleed air pressure from the lines before breaking the connections
Fire prevention during welding or burning aboard any vessel should include_______. I. Posting a fire watch in the immediate area II. Providing an extinguisher which is ready for immediate use III. Requiring the fire watch to remain on post for an adequate cool down period after the completion of welding of burning
A fire and boat drill on a tank vessel shall, by regulation, include which of the following? I. starting the fire pumps II. Checking fireman's outfits and other personel resuce equipment III. Checking relevant communications equipment
Regulations require gears, coupling, flywheels, and all rotating machinery capable of injuring personnel to be__________.
Protected with adequate covers or guards
identified by yellow and black warning signs
conspicuously identified as to their particular hazard
located where they may not be easily contacted
Why is it that a good housekeeping on a vessel prevents fires?
It eliminates potential fuel sources
It allows better access in an emergency
It eliminates trip hazards
It improves personnel qualifications
When working around deck machinery it is a good safety practice to avoid standing in a ‘bright’ of a rope because_________.
a sudden yank on the line may trap your leg
it doesn’t allow for proper faking of the line
the coil may become tangled and difficult to manage
your work shoes may cause damage to the rope
To safeguard the operator and other personnel working on or near a hoisting operation, which of the following precautions should be observed?
Ensure that the lifting gear capacity is not exceeded
Keep a load on the hoist until all personnel are finished working
Set the load on a movable dolly when transportation may be needed
Have one man keep a hand on the load to steady it.
To prevent oily rags from spontaneously igniting, what should you do?
Kept in well-ventilated area and discarded as soon as possible
Kept in a non-metal container
Cleaned thoroughly for reuse
kept in paint locker
The knife edges and gaskets of watertight doors should be _________.
clean and uncoated
lightly coated with tallow
coated with petroleum jelly
painted to prevent weathering
Before the seas get rough, it is good safety practice to_________.
make a visual inspection of all engine spaces and secure loose gear
move quickly about the ship
increase all engine space lighting
shutdown auxiliary equipment
When a ship is expected to encounter rough seas, it is a good safety practice to ____________.
check for items which may become adrift and secure loose gear
make available extra survival gear
maintain a negative trim on the vessel
Which of the following must be eliminated to prevent accidents?
Unsafe actions
Orderliness
Frequent inspections
Good work habit/practices
You are replacing a section of heavy piping on deck and using a chain fall to lift the pipe. Which of the following precautions should be taken to prevent personal injury?
Attach lines to the ends of the pipe and have your helpers steady the load
Position several men under the pipe so they can catch it if it falls
Place an old mattress under the hoist to prevent the load from hitting the deck.
have a first aid kit at the job site
Which of the listed conditions can be considered as the single greatest cause of accidents?
Human error
Speed
Excessive knowledge or skill
Excitement
Safety is dependent on orderliness and cleanliness. Order may be maintained by __________.
storing items in their assigned place
storing all items in a common storage container except those ready-for-sea
tagging all items according to their age and then storing them together
disposing of used items
Which of the following actions is required to be carried out during a fire drill on board?
Each fire pump is to be started.
The lifeboat is to be launched and operated
An inventory of rescue and fire equipment is to be taken.
An inspection and inventory of fire hoses is to be made
What do all portable electric tools require a ground connection?
To prevent electric shock if the tool is shortened
To prevent burning the motor from an overload
To prevent overloading the motor
To prevent grounding the plastic case through a short
Which of the following statements represents the FIRST precaution to be taken prior to working in any installed electrical component?
Open the supply circuits and tag the switches.
Water rubber gloves and boots
Use only approved nonconducting tools
Groups the case of the machine before beginning any repairs
Which practices should be followed at all times when using an electric bench grinding machine?
Wear google, keep support rest clearance properly adjusted to the wheel and replace grinding wheels that are chipped or unbalanced
Wear goggles or face shield
Replace grinding wheels that are chipped or unbalanced.
Keep the support rest clearance properly adjusted to the wheel.
Which practices should be followed at all times when using an electric grinding machine?
Each of the above practices
Wear goggles or face shield.
Be certain that the frame is properly grounded.
Be properly trained in the use of this tool
Approved buoyant work vests may be carried aboard tank vessels and shall be worn by crew members’ ____________.
under the supervision and control of designated ship's officers
when working near or over the water under unfavorable working conditions
as substitutes for the approved life preservers during routine drills, weather permitting, when a vessel is moored pierside
all of the above
When should you wear safety glasses aside from when using a hand portable grinder and scraping paint with a hand scraper?
Using a hammer and a chisel
While in port
During port state inspection
Machinery driving fuel oil transfer and fuel oil service pumps must be fitted with a remote means of stopping the machinery. Where is its location?
Outside the space concerned
Within the space concerned
The throttle station
Within the fireroom
What is the purpose of injury report?
Any of the above
To give the National Insurance authorities the basis for evaluating whether the personal injury or illness in question can be recognized as an occupational injury or occupational disease
To give the public authorities information which may be of help in the evaluation of safety issues and safety measures etc. at the workplace
To enable the compilation of injury/accident statistics.
What is an occupational injury?
injury is meant bodily injury or illness which is caused by a work accident
injury is meant bodily injury or illness which is caused by a leisure accident
either A or B
Neither A nor B
Which of the following is an example of biological hazard I. Exposure to high temperatures, too high levels of relative humidity II. Zoonotic diseases III. Fungal diseases
Which of the following is an example of biological hazards? I. Exposure to raw vegetable and animal products which may cause allergic reaction II. Risk of poisoning while tasting food ingredients and meals at various stages of cooking III. Risk of communicable diseases transmitted by pests, vermin, rodents, insects
Which of the following aspects that ergonomist should consider the psychological aspect of a person?
mental abilities
fitness and strength
the social environment
body size and shape
personality
the physical environment
the senses, especially vision, hearing and touch
the stresses and strains on muscles, joints, nerves
How can ergonomics improve health and safety to the work place? I. reduces the potential for accidents II. reduces the potential for injury and ill health III. improves performance and productivity"
What is Chapter VIII of STCW Code?
Standards regarding watch keeping
Responsibilities of companies
Standards governing the use of simulator
Revalidation of certificate
Which practices should be followed at all times when using an electric bench grinding machine
All of the above
For the protection of personnel, moving parts of rotating machinery are required to be fitted with ___________.
cover guards
audible alarms
bright lights
reflective tape
All portable electric tools should have a ground connection to prevent_________.
electric shock if the tool is shortened
burning out the motor from an overload
overloading the motor from a short
grounding the plastic case through a short
Safety glasses should be worn when_________. I. using a hand portable grinder II. Scraping paint with a hand scraper III. Using a hammer and a chisel
Before disconnecting a joint in a pipeline, you should__________.
be sure no pressure exist in the line
Determine the size of the gasket
hung a bucket under the joint
have a first aid kit on hand
Which of the actions listed and instituted on your part will have the greatest lasting effect on the crew with respect to safety?
Incorporating safety practices in daily routine
Displaying posters illustrating safety practices
Showing video tapes of actual accidents
Publishing comprehensive safety rules
All watertight doors and watertight hatches on small passenger vessels of less than 100 gross tons required to be marked in letters __________.
of at least 1-inch, ‘watertight door-close in an emergency’ or ‘watertight hatch-close in emergency’
not to exceed 1-inch, ‘watertight door-close in emergency’ or ‘watertight hatch-close in emergency’
of at least 1-inch, ‘emergency exit, keep clear
not to exceed 1-inch, ‘emergency exit, keep clear’
According to the Regulations, all escape hatches and other emergency exits on small passenger vessels of less than 100 gross tons shall be marked on__________.
both sides, in at least 2-inch letters ‘emergency exit-keep clear’
exterior side, in less than 2-inch letters ‘watertight openning-keep clear’
exterior side only, in at least 2-inch letters ‘emergency exit-keep clear’
both sides, in at least 2-inch letters ‘watertight door-close emergency’
Regarding battery charging rooms, ventilation should be provided __________.
at the highest point of the room
at the lowest point of the room
horizontally near the batteries
only when charging is in progress
Before any work on electrical or electronic equipment is performed, which of the following precautions should be carried out?
Secure and tag the supply circuit breaker in the open position.
De-energized the applicable switchboard bus.
Bypass the interlocks
Station a man at the circuit supply switch
Which of the following systems must be arranged so as to be energized by the final emergency power source as required by regulation? I. at least one light in the steering gear room II. Each power operated watertight door system III. Each charging panel for temporary emergency batteries
Any abnormal condition or emergency occurring in the fireroom must be immediately reported to the _________.
engineer on watch
oiler on watch
first assistant engineer
Coast Guard
Any abnormal condition or emergency that occurs in the engine room must be reported immediately to the __________.
Engineer on watch
fireman on watch
Chief engineer
Before any work is done on a burner in an automatically fired auxiliary boiler, you should always ___________.
close all manually operated fuel valves
block all control valves
allow the boiler to cool completely
lock all safety interlock switches closed
Good housekeeping on a vessel prevents fires by __________.
eliminating potential fuel sources
allowing better access in an emergency
eliminating trip hazards
improving personnel qualifications
What safety precautions should be observed by the crew while working around machinery in an engine room? I. They should wear safety shoes II. They should wear ear protection III. They should not wear jewelry
TO safeguard the operator and other personnel working on or near a hoisting operation, which of the following precautions should be observed?
Insure that the lifting gear capacity is not exceeded
All exposed and dangerous areas machinery, such as gears and rotating parts, shall be properly protected with__________.
any of the above
covers
guards
rails
accidents are considered as an ‘unexpected contract’ you will be able to perform a better job by observing which of the following practices? I. Looking for unsafe practices II. Inspecting for unsafe conditions III. Analyzing jobs for safer methods
Who is responsible for reporting a casualty for a mobile offshore drilling unit?
The owner.
The pilot.
The surveyor
The engineer
Which of the following events shall be conducted during a fire and boat drill?
All watertight doors which are in use while the vessel is underway shall be operated
All lifeboat equipment shall be examine
Fire pumps shall be started and all exterior outlets opened
