Boiler State Test Review Wa. RTC. Questions with correct answers., Exams of Community Corrections

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Boiler State Test Review Wa. RTC.

Questions with correct answers

the most important boiler fitting on a boiler is the - ANSWER -safety valve A ________ blow-down is performed to remove sludge from the boiler. - ANSWER -Bottom A boiler operated at pressure not exceeding 15 psi for steam is classifies in the Tacoma city - ANSWER -low-pressure steam heating boiler The water column for a boiler must be located: - ANSWER -at the normal operating water level A boiler that is priming has: - ANSWER -Water carried over with the steam According to Seattle steam code, whenever a boiler that is required to be tended by a certified boiler operator with a particular class of certificate, is being operated by a person who does not have a boiler operating certificate or the boiler operate certificate is limited to not include the size of boiler being operated, the boiler operator, or the person tending the boiler, shall be issued - ANSWER -Not to exceed $500 per day for each violation from the date the violation occurs or begins until compliance is achieved. A steam boiler safety valves must be sized to prevent steam pressure from exceeding Mawp - ANSWER -6% CO in flue gas of a boiler is an indication of - ANSWER -Incomplete combustion. Fuel oil grade commonly use in a boiler are designate by No.________ for the lightest grade of fuel oil through No.________ for the heaviest grade of fuel oil. - ANSWER -2; When starting-up a reciprocating pump - ANSWER -the discharge valve should be open Priming a water pump means: - ANSWER -Filling the pump casing and suction line with water

A sliding vane pump is termed: - ANSWER -A Rotary pump Greases are commonly a mixture of mineral oil and: - ANSWER -Graphite The pour point of an oil is: - ANSWER -The highest temperature at which the oil will flow A basic law of electricity is, unlike charges attract each other and like charges: - ANSWER - Repel each other The bourdon tube is often shaped in the form of a "C", having an arc span of about: - ANSWER -270 degrees The low water cut off can be tested by: - ANSWER -Shutting off the feed water A hot water boiler is protected from over pressure mean of: - ANSWER -A safety pop Valve Your boiler is operated with automatic water feeders. If the boiler suddenly requires an increase in water treatment, what should you look for? - ANSWER -Check for a loss of water The blow down valve of a steam heating boiler must: - ANSWER -Be installed at the lowest point of the boiler. Water begins to boil at approximately F. - ANSWER - A low pressure boiler has an MAWP up to psi - ANSWER - Sensible heat is heat that - ANSWER -Can be measured with a thermomemter ________ air is air that controls the combustion rate, which determines the amount of fuel burned. - ANSWER -Primary

The amount of Energy required to raise the temperature of 1-lb. of water 1-F. is 1 - ANSWER - Btu Latent heat is a heat that - ANSWER -Involves that state and no temperature change The evaporation of #4.5lb of water per-hour from and at a feed water temperature of 212F is - ANSWER -one boiler horsepower The ________ regulates the high and low fire of the burner. - ANSWER -Modulating pressure control When blowing down a boiler, the quick opening valve should be opened and close - ANSWER - First; Last The purpose of the safety valve is to prevent the pressure in the boiler from ________ - ANSWER -Exceeding its MAWP A valve allow the flow of water in one direction only. - ANSWER -Check A ________ test is a low water fuel cutoff test that allows the water level in the boiler drop by cutting the feed water pump off - ANSWER -Evaporation The ________controls the starting and stopping of the burner by sensing the temperature in the hot water boiler. - ANSWER -aquastat Condensate in the steam lines can result in - ANSWER -Water hammer When an os&y vale is open, the stem in the position. - ANSWER - @@@@@@@@idk@@@@@A Combustion is the burning of all the fuel using the minimum amount of excess air. - ANSWER - complete

A ________automatic combustion control is most commonly use on low pressure boilers. - ANSWER -ON/OFF A therm is equivalent to Btu - ANSWER -100, When the temperature of fuel is raided, its viscosity - ANSWER -Is lowered Draft is air that is pulled through the boiler. - ANSWER -induced Draft guage measurement are expressed in inches of. - ANSWER -water column A ________ is a simple draft gauge consisting a U-shaped glass tube. - ANSWER -Manometerq Water contain large quantities of menirals called - ANSWER -Hard water ________ is a condition cause when steam bubbles are below the boiler surface? - ANSWER - foaming In the boiler water ________ causes corrosion and pitting of the boiler metal. - ANSWER - oxygen Nonadhering sludge is removed from the boiler using the - ANSWER -Bottom blow down valve boilerwater level with pH level less than 7 is - ANSWER -Acidic Bottom blowdown is best performed when boiler is - ANSWER -Under light loads Oxygen in the boiler will cause________ - ANSWER -pitting of boiler metals The first thing the boiler operator should do when taking over a shift is - ANSWER -Check boiler water level

when the low water fuel cut off is blown down, - ANSWER -the burner should be shut off. When the flame scanner is removed with the burner firing, the - ANSWER -burner should be shut off. During boiler inspection, the main steam stop valves is - ANSWER -closed and tagged out A low water condition requires immediately - ANSWER -Securing fuel to the burner A furnace explosion can be caused by - ANSWER -an accumulation of combustible gas Pressure is water pressure per vertical foot exerted at the base of a column of water - ANSWER -hydrostatic The ________ protects the hot water heating system from exceeding the MAWP - ANSWER - safety relief valve When the boiler is removed from services, the first thing to do is - ANSWER -coat the tube with oil to prevent rusting The ________ should be opened to prevent a vacuum in the boiler before opening a manhole. - ANSWER -Boiler vent A boiler has heat and gases of combustion that pass through tubes surrounded by water. - ANSWER -firetube. ________ draft is pushes through the boiler - ANSWER -forced A flow water control vale in a hot water heating system functions similar to an ________valve to prevent water from circulating from natural circulation. - ANSWER -check

The number and type of fire extinguisher needed are determined by - ANSWER -how fast the fire may spread,potential heat intensity, accessibility to fire. A________ is a control that function as the mastermind of the burner controls system to control the firing cycle - ANSWER -Pressure control The low water cut-off is tested - ANSWER -daily (more the better) The purpose of the safety valve is to prevent the pressure in the boiler from - ANSWER - Exceeding its MAWP A Primary reason for using thermocouples for measure temperature is________. - ANSWER -to take and read the readings for remote plans centrally Light and a photoelectric cell are sometime use to indicate ________. - ANSWER -smoke density Boiler water must be conditioned to prevent________. - ANSWER -formation of scale,oxygen pitting, and carryover Regardless of the type of fuel being used, before lighting off a boiler during a cold Start-up the operator must first________. - ANSWER -check for the correct boiler water level Priming is dangerous and could lead to ________ hammer. - ANSWER -water Flow meters measure the rate of flow of ________. - ANSWER -a variety of fluids A steam pressure gauge is calibrated in________. - ANSWER -pounds per square inch The most accurate mean of deciding the frequency of blowdown of a boiler is determined by a________. - ANSWER -water analysis

The positioning combustion control system used on older boiler cannot function without ________ pressure. - ANSWER -air To achieve complete combustion in a spreader stoker, air is introduced________. - ANSWER - warm air is used Fuel oil heaters must be used when burning No________ fuel oil. - ANSWER - When steam is super heated the ________. - ANSWER -temperature increases with no increase in prssure Chemicals added to the boiler water change the scale-forming salts into________. - ANSWER - A nonadherrimg sludge on the feedwater line near the boiler is a check valve and a stop valve. The vales closes to the shell of the boiler is the ________ valves. - ANSWER -stop Maintenance work preformed inside a boiler an ________ that contains procedures to prevent possible injury from hazards. - ANSWER -confined space permit The water column and gauge glass should usually be blown down________. - ANSWER -once a shift Duplex strainer are found on ________ of the fuel oil pump. - ANSWER -on the discharge side The whistle vale, which is located in the boiler water column,________. - ANSWER -warns the operator of high or low water. Surface tension on the water in the steam and water drum is increased by________. - ANSWER -impurities that float on the surface of the water the automatic city water makeup valve found on an open feedwater heater is used to ________.

• ANSWER -maintain a water level in the feedwater heater if there are insufficient condensate returns.

Boiler that are out of service for an extended period of time can be ________. - ANSWER - layed up either wet or dry As the boiler is cooling down, the boiler operator must maintain the ________. - ANSWER - NOWL A reciprocating feedwater pump must have a safety relied valve located between the ________.

• ANSWER -pump and the discharge valve No.________ fuel oil must be heated to reach the required temperature for combustion. - ANSWER - The metering combustion control system is sensitive to change in ________. - ANSWER -steam flow and pressure Bottom blowdown line on a watertube boiler are located on the ________. - ANSWER -mud drum When testing a safety valves by hand, there must be ________. - ANSWER -at least 75% of the popping pressure When replacing a broken guage glass, the water level is checked by________. - ANSWER - using the try cocks After a boiler has had major repair work made on its steam or waterside or has developed a low water condition, it should be subjected to________. - ANSWER -a hydrostatic test. Steam separators work on the principle of________. - ANSWER -changing the direction of steam flow Aline desuperheater is typically used ________. - ANSWER -when both superheated and saturated steam are needed, with a pressure reducing station, and with feedwater addition to desuperheat steam

water weighs approximately ________1b/gal. - ANSWER -8. A high water level condition in the boiler can be corrected by using ________ blowdown - ANSWER -expansion bend are ude Burning a fuel releases________. - ANSWER -heat energy The sequence of three numbers found on the data plate attached to a reciprocating feedwater pump indicated the________. - ANSWER -diameter of steam piston, diameter of water piston,and length of pump stroke To ensure that moisture-free steam goes to the soot blower, the steam line to the soot blower must come off the ________ - ANSWER -highest part of the steam side of the drum The setting or adjusting of a safety valve should only be done by the________. - ANSWER - qualified person who is familiar with the construction and operation of a safety valve the boiler vent is located at the ________. - ANSWER -highest part of steam aside of the boiler The ASME code will allow an automatic none return valve to be used as main steam stop valve. If one is used, it must be ________. - ANSWER -installed as close to the shell of the boiler as practical on the main steam line