Latest API 936 Exam Questions and Answers

Here you can read Latest API 936 Exam Questions and answers – API Refractory Personnel

1.

The loss of fragmented refractories from the face of the refractory structure, through cracking and rupturing which results in the exposure of the original inner portion of the refractory lining is called

 a) By passing

 b) Erosion

 c) Spalling

 d) Sheeting

2.

A condition describing a refractory lining that is soft and friable

 a) Bloating

 b) Plunky

 c) Slumping

 d) None of the above

3.

Refractory packing requirements, the weight in the bag, shall not deviate by more than

 a) ±1%

 b) ± 2%

 c) ± 3%

 d) ± 4%

4.

Chemical setting means

 a) Developing a strong bond by chemical reaction

 b) Pre-set refractory installed by gunning method

 c) A castable installation technique whereby refractory is sticky enough so that the lining formed is structurally homogeneous

 d) A non-reactive coating applied to freshly installed cementitious materials that aids the hydration process by retarding moisture loss

5.

Refractories that are resistant to chemical attack by both acid and basic slags, refractories or fluxes at high temperature is

 a) Acid

 b) Basic

 c) Neutral

 d) None of the above

6.

The hot wall means a thin refractory lining system with

 a) Metal shell temperature greater than 500° F (260° C)

 b) Metal shell temperature greater than 700° F (370° C)

 c) Metal shell temperature greater than 40° F to 100° F (5° C to 38° C)

 d) Metal shell temperature greater than 1500° F (815° C)

7.

A refractory materials, stiffer than plastic, that cannot be extruded but has suitable properties to permit ramming into place to form a monolithic structure

 a) Plastic refractory

 b) Ramming mix

 c) Monolithic refractory

 d) None of the above

8.

API 936 deals with

 a) Monolithic refractory

 b) Installations of refractory linings

 c) Installation, quality control procedures for monolithic refractory linings

 d) None of the above

9.

Cristobalite is an important constituent of

 a) Alumina bricks

 b) Silica brick

 c) Magnesia brick

 d) Insulating brick

10.

Specimen means individual used for physical property testing

 a) Cube

 b) Sphere

 c) Hexagon

 d) Cylinder

11.

Blanket, Module, Bulk paper, rope, and vacuum formed shaped are:

 a) shaped refractory

 b) unshaped refractory

 c) refractory fibre

 d) all of the above

12.

Flocculating agent means

 a) A chemical additive causing rapid stiffening of fluid refractory castables

 b) A non-reactive coating applied to freshly installed cementitious materials

 c) Phosphate bonded plastics

 d) None of the above

13.

Packing of chemical setting refractories should have mechanical protection by

 a) cardboard

 b) rigid plastic

 c) metal outside

 d) any of the above

14.

The objective of the material qualification is

 a) Confirm that the specifications, good practice, and installation procedures are followed

 b) Confirm that agreed procedure is followed

 c) Confirm that the installed linings meet specification standards

 d) Confirm that materials manufactured for the job meet the specified physical property standards

15.

Welding method utilizing an arc-welding machine in conjunction with a timer and a gun is called

 a) V-anchor

 b) Footed anchor

 c) Stud weld

 d) None of the above

16.

Temporary containments used in gunning that are set up and secured to provide a firm surface on which to make perpendicular cold joints at the termination of work areas is known as

 a) Dry gunning

 b) Shot board

 c) Wet gunning

 d) Cut Back Effect

17.

Test panels for pneumatic gunning are inclined above the horizontal at an angle of

 a) 45 ˚

 b) 30 ˚

 c) 60 ˚

 d) None of the above

18.

Sampling frequency as applicable for the products intended use in either erosion service or other service is responsibility of __

 a) Contractor

 b) Owner

 c) Inspector

 d) Manufacturer

19.

Materials having refractory properties which form a refractory body when bonded into a conglomerate mass by a matrix is called

 a) Cementitious concrete

 b) Refractory mass

 c) Refractory aggregate

 d) None of the above

20.

Which function of refractories is to resist temperature?

 a) Primary function

 b) Secondary function

 c) Tertiary function

 d) None of the above

21.

Approval of engineering drawings & execution plan & dry out procedures is responsibility of_________

 a) Contractor

 b) Inspector

 c) Owner

 d) Manufacturer

22.

The application of monolithic refractories by means of air placement guns is

 a) gunning

 b) placing

 c) pouring

 d) casting

23.

Preparation & execution plan is responsibility of_______

 a) Owner

 b) Contractor

 c) Inspector

 d) Manufacturer

24.

For fire clay and some high alumina materials, the most commonly used index of refractoriness is known as:

 a) Refractoriness

 b) Pyrometric cone equivalent

 c) Refractoriness under load

 d) None of the above

25.

Execution plan should include______

 a) Required lining thickness tolerance

 b) Cutting & dry out procedures

 c) Designation of inspection hold points & the required advanced notification to be given to the inspector

 d) Material and applicator qualification test results

26.

Refractories whose major constituent is lime, magnesia, or both and which may react chemically with acid refractories, acid slags or acid fluxes at a high temperature is known as

 a) Acid refractories

 b) Basic refractories

 c) Natural refractories

 d) None of the above

27.

Submission to the owner of all exceptions, substitutions & deviation of the requirements of execution plan, API 936 Standard &other referenced documents is the responsibility of _____

 a) Contractor

 b) Inspector

 c) Owner

 d) Manufacturer

28.

All the samples for CCs test must be dried at 220 to 230˚C (105 to 110˚C) for

 a) 12 hrs (overnight)

 b) 18 hrs (overnight)

 c) 20 hrs (overnight)

 d) 24 hrs (overnight)

29.

Deciding criteria for hammer testing & the extent of cracking & surface voids permitted is the responsibility of _

 a) Owner

 b) Contractor

 c) Inspector

 d) Manufacturer

30.

Compositions of ground refractory materials which develop a strong bond at air ambient temperatures by virtue of chemical reactions within the binder phase that is usually activated by water additions. These refractories include cement and phosphate bonded castables is called:

 a) Air setting refractories

 b) Heat setting refractories

 c) Air and heat setting refractory

 d) None of the above

31.

Providing inspector verified documentation of installation records related to fiber & water percentage is responsibility of ___

 a) Contractor

 b) Inspector

 c) Owner

 d) Manufacturer

32.

Forms (types) of refractory

 a) shaped

 b) unshaped

 c) refractory (ceramic) fibre

 d) all above

33.

Providing a compliance data sheet in accordance with Annex C for each product is responsibility of______

 a) Contractor

 b) Inspector

 c) Owner

 d) Manufacturer

34.

A natural or synthetic mineral theoretically consisting solely of alumina (Al2O3), specific gravity 4.00 – 4.02, melting point 3720˚ F.  (2050˚ C) Hardness 8.8 is called

 a) corundum

 b) kaolin

 c) mica

 d) none of the above

35.

Documentation of material & applicator qualification test results is the responsibility of________

 a) Owner

 b) Contractor

 c) Inspector

 d) Manufacturer

36.

The functions of refractories include resistance to other destructive influences such as abrasion, pressure, chemical attack and or rapid changes in temperature is called

 a) Primary function

 b) Secondary function

 c) Tertiary function

 d) None of the above

37.

Semi Silica fire clay brick contains

 a) 27 % Silica maximum

 b) Not less than 72% Silica

 c) Maximum 58% Silica

 d) Maximum 45% Silica

38.

Refractories means

 a) Hard to fuse

 b) Hard to test

 c) Hart to set

 d) None of the above

39.

Ramming means

 a) The use of compressive force or impact to deform a stiff refractory mix

 b) Castable installation technique by way of pumping castable to installation site

 c) A technique used with dry gunning machine

 d) A castable installation technique by packing successive handfuls of material to the desired shape

40.

In ceramics, the property of resistance to melting, softening or deformation at high temperature is called

 a) Refractoriness

 b) Pyrometric cone equivalent

 c) Cold crushing strength

 d) None of the above

41.

Deciding required lining thickness tolerances is responsibility of______

 a) Contractor

 b) Inspector

 c) Owner

 d) Manufacturer

42.

Brick, tile, fired shapes and fused cast shapes are

 a) shaped refractory

 b) unshaped refractory

 c) refractory fibre

 d) all above

43.

Fused silica aggregate is used as a raw material in a castable providing

 a) Low thermal conductivity

 b) Low thermal expansion

 c) Low thermal conductivity and low thermal expansion

 d) None of the above

44.

Submission of verified documentation of weather conditions & any other unusual conditions of occurrences & dry out records is responsibility of_____

 a) Owner

 b) Contractor

 c) Inspector

 d) Manufacture

45.

The most commonly used binder for refractory concrete is

 a) calcium aluminate cement

 b) cements

 c) silicates

 d) all of the above

46.

Based on screen analysis, the size of Alumina – silicate aggregate in typical modern castable is

 a) 50 – 60%

 b) 60 – 70%

 c) 70 – 8-%

 d) None of the above

47.

Castable, gunning mixes, ramming mixes, plastics and mortars are

 a) Shaped refractory

 b) Unshaped refractory

 c) Refractory fibre

 d) All of the above

48.

Testing of refractory materials sampled from the installation to confirm that they meet specified physical property standard mean

 a) As-installed testing

 b) laboratory testing

 c) application qualification testing

 d) compliance data sheet

49.

Based on screen analysis the fines (cement, fume silica, fine alumina) in typical modern castable is

 a) 40 – 50%

 b) 30 – 40%

 c) 20 – 30%

 d) None of the above

50.

Compositions of ground refractory materials which require relatively high temperatures for the development of an adequate bond (commonly called the ceramic bond) is called

 a) air setting refractories

 b) heat setting refractories

 c) air and heat setting refractories

 d) none of the above

51.

Specifying physical property requirement to be used for qualification & installation quality control by specific product installation method & location where the product will be utilized is the responsibility of______

 a) Owner

 b) Contractor

 c) Inspector

 d) Manufacturer

52.

A combination of refractory grain and suitable bonding agent that, after addition of a proper liquid, is generally poured into place to form a refractory shape or structure which becomes rigid because of a chemical action is called

 a) mortar

 b) castable

 c) ceramic modules

 d) all of the above

53.

Commercially on a calcined basis bauxite must contain at least

 a) 65% fused silica

 b) 60% alumina

 c) 65% alumina

 d) None of the above

54.

Alumina – silica refractories containing 45% or more alumina, materials used in their production include diaspore, bauxite, gibbsite, kyanite, sillimanite, alusite and fused alumina (artificial corundum) is called

 a) fire clay refractory

 b) insulating refractories

 c) high alumina refractories

 d) all of the above

55.

Recording all non-conformances and/or potential problems is the responsibility of_______

 a) Owner

 b) Contractor

 c) Inspector

 d) Manufacturer

56.

A high alumina mineral usually consisting of rounded concretionary grains embedded in clay – like mass, and believed to consist essentially of alumina tri hydrate (Al2O3 3H2O) and alumina hydrate (Al2O3 H2O) in varying proportions is called

 a) kyanite

 b) bauxite

 c) fused alumina

 d) alusite

57.

A group of impure magnesium silicate minerals that occur in a fiberous form is known as

 a) Asbestos

 b) Mineral fibre

 c) Fused silica

 d) None of the above

58.

A group of rock minerals having nearly perfect cleavage in one direction and consisting of thin elastic plates and most common varieties are muscovite and biotite is called

 a) corundum

 b) kaolin

 c) mica

 d) none of the above

59.

In API RP 936, the referenced ASTM standard procedure for cold crushing strength and modules of rupture is

 a) C 133 – 97

 b) C704 – 01

 c) C181 – 91

 d) None of the above

60.

The term abrasion resistance means

 a) Effects of eroding particles for an extended period

 b) The ability to withstand effects of eroding particles for an extended period without significant loss of material or other damage

 c) A measure of a refractory ability to resist failure

 d)A non-reactive coating applied to freely installed cementations materials that aids the hydration process by retarding moisture loss

61.

The test specimen of castable refractory for cold crushing strength shall be

 a) 2 in. (51mm) cubes

 b) Cylinders, 2 in. (51mm) in dia. by 2 in.(51 mm) height

 c) a or b

 d) none of the above

62.

Providing inspector verified documentation of installation records is responsibility of____

 a) Contractor

 b) Inspector

 c) Owner

 d) Manufacturer

63.

The selected compression test section of specimen for CCs test shall be free from

 a) cracks

 b) chipped surfaces

 c) other obvious defects

 d) all of the above

64.

Refractories containing a substantial amount of silica which is reactive with basic refractories, basic slags, or basic fluxes at high temperature are known as

 a) Acid refractories

 b) Basic refractories

 c) Natural refecatories

 d) None of the above

65.

Refractories chemically and physically stable at

 a) Low temperatures

 b) Average temperatures

 c) High temperatures

 d) None of the above

66.

Metal fibers are usually made of

 a) Austenitic Stainless Steel and 0.010 in to 0.0022 in (0.3 mm to 0.6 mm) in length

 b) Austenitic Stainless Steel and 0.010 in to 3/4 in (0.3 mm to 19 mm) in length

 c) Austenitic Stainless Steel and 3/4 into Tin (19 mm to25mm) in length

 d) None of the above

67.

For modules of rupture test of brick and shapes, the preferred test specimen shall be standard

 a) 228 x 114 x 64 or 76mm

 b) 150 x 114 x 76mm

 c) 200 x 150 x 76mm

 d) None of the above

68.

To compose a sample for CCS test from an equivalent number of refractory shapes the specimen should be

 a) at least five

 b) at least three

 c) at least four

 d) None of the above

69.

To compose a sample for modulus of rupture test from an equivalent number of refractory shapes, the specimen should be

 a) At least two

 b) At least three

 c) At least four

 d) At least five

70.

A separation between adjoining parts of a refractory lining which allows small expansive movements, such as those caused by thermal change is known as

 a) Thermal expansion

 b) Expansion joint

 c) Thermal conductivity

 d) None of the above

71.

Modulus of rupture test for castable refractories, the test specimen shall be

 a) 9 x 2 x 2 in (228 x 51 x 51mm)

 b) 8 x 2 x 2 in

 c) 6 x 2 x 2 in

 d) None of the above

72.

Standard test method for abrasion resistance of refractory materials at room temperature is

 a) C 181 – 91

 b) C 704 – 01

 c) C 133 – 97

 d) None of the above

73.

Mechanical wearing away of the surfaces of refractory bodies in service by washing action of moving liquid or gases is called

 a) erosion of refractories

 b) spalling of refractories

 c) crumble of refractories

 d) none of the above

74.

As per ASTM C- 704, for the erosion tests, silicon carbide grit to be used by

 a) one time

 b) two time

 c) three time

 d) none of the above

75.

Hydro-setting refractories are commonly known as

 a) castables

 b) monolithic lining

 c) erosion

 d) plastic refractory

76.

The increase in linear dimensions and volume which occurs when materials are heated and which is counter balanced by contraction of equal amount when the materials are cooled.

 a) thermal expansion

 b) thermal conductivity

 c) thermal shock

 d) none of the above

77.

The air pressure to blast the 1000 g of size graded silicon carbide grain for abrasion resistance test should be

 a) 448 KPa (65 PSi)

 b) 450 KPa

 c) 400 KPa

 d) None of the above

78.

The exposure of a material or body to a rapid change in temperature which may have deleterious effect

 a) thermal expansion

 b) thermal conductivity

 c) thermal shock

 d) none of the above

79.

The property of matter by virtue of which heat energy is transmitted through particles in contact.

 a) thermal expansion

 b) thermal conductivity

 c) thermal shock

 d) none of the above

80.

An internal component used for the separation of solids from flue or product gas in a fluid coking unit is called

 a) a cyclone

 b) plenum

 c) riser of FCU

 d) none of the above

81.

Refractory failure mechanism are.

 a) erosion and corrosion

 b) thermal shock and mechanical abuse

 c) overheating and chemical attack

 d) all of the above

82.

Section of transfer line in which flow is in an upward direction is called

 a) cyclone of FCCU

 b) Plenum of FCCU

 c) Riser of FCCU

 d) None of the above

83.

Enclosure inside the top head of a reactor or regenerator vessel which supports the cyclones and in which gases exiting the cyclone outlets are collected is called

 a) cyclone of FCCU

 b) Plenum of FCCU

 c) Riser of FCCU

 d) None of the above

84.

Metallic anchor, usually V-stud which has a foot shaped configuration at the base to aid weld attachment to the shell is called.

 a) V-anchor

 b) Footed anchor

 c) Stud weld

 d) None of the above

85.

Metallic anchor made from rod or bar stock that is configured in a V-shape is called

 a) V-anchor

 b) Footed anchor

 c) Stud wed

 d) None of the above

86.

Metallic anchor made from rod or bar and usually used for dual layer linings that is configured in

 a) Y shape

 b) V shape

 c) U shape

 d) All of the above

87.

Welding method utilizing an arc-welding machine in conjunction with a timer and a gun is called

 a) V-anchor

 b) Footed anchor

 c) Stud weld

 d) None of the above

88.

Hexmesh supplied in flexible rolls and ready fit to curved surface is called

 a) Flexmesh

 b) Hexalt anchor

 c) Hexcel

 d) All of the above

89.

Metallic anchor used to attach ceramic anchors to the casing or shall of a process unit is

 a) Claw anchor

 b) C-clip

 c) U – anchor

 d) None of the above

90.

The most common sizes in thickness fo hexmesh are

 a) ¾ in or 1” (19mm or 25mm)

 b) (20 – 25mm)

 c) (10 – 20mm)

 d) None of the above

91.

1 solid black is the colour of stripe for alloy material

 a) 304

 b) 304L

 c) 310

 d) None of the above

92.

The typical example of hexalt anchor is

 a) S-bar

 b) Hexcel

 c) Curl and Tacko anchors

 d) All of the above

93.

Colour coding does not require for anchor alloy of

 a) carbon steel

 b) SS304

 c) SS310

 d) None of the above

94.

The colour of stripe for Inconel 600 alloy material of metallic anchor is

 a) 1 solid black

 b) 2 solid black

 c) 2 solid blue

 d) None of the above

95.

The colour of stripe for 304L alloy material of metallic anchor is

 a) 1 solid black

 b) 2 solid black

 c) 1 solid grey

 d) None of the above

96.

The vessel in which coke and residual hydrocarbons are burned off the catalyst and the flue gas is then separated from the catalyst is called

 a) Reactor of FCCU

 b) Regenerator of FCCU

 c) Cyclones of FCCU

 d) None of the above

97.

The vessel in which cracking reaction occurs or is completed and product gases are separated from coke and / or catalyst particulate is called

 a) Reactor of FCCU

 b) Regenerator of FCCU

 c) Cyclones of FCCU

 d) None of the above

98.

Refractory lined pipe used for the transport of hot particulate medium and gases between process vessels is called

 a) Transfer line of FCCU

 b) Stand pipe of FCCU

 c) Fractionator of FCCU

 d) None of the above

99.

Section of transfer line in which flow is in a downward direction is called

 a) transfer line of FCCU

 b) riser of FCCU

 c) stand pipe of FCCU

 d) none of the above

100.

As per API recommended practice 936, the standard test method for reheat change of refractory brick is

 a) C113 – 02

 b) C 133 – 97

 c) C 181 – 91

 d) none of the above

101.

API 936, standard test method for abrasion resistance of refractory materials at room temperature is

 a) C 113 – 02

 b) C 704 – 01

 c) C 181 – 91

 d) None of the above

102.

API 936, standard test method for workability index of fire clay and high alumina plastic refractories is

 a) C 113 – 02

 b) C 133 – 97

 c) C 181 – 91

 d) None of the above

103.

Testing frequency for material qualification of refractory for erosion service requires

 a) 1 sample per pallet or less from each production run

 b) 1 sample per pallet or more from each production run

 c) 2 sample per pallet or more from each production run

 d) None of the above

104.

The vessel down stream of the reactor used to separate different product fractions is called

 a) stand pipe of FCCU

 b) transfer line of FCCU

 c) Fractionator of FCCU

 d) None of the above

105.

Testing frequency for material qualification of refractory for other service requires

 a) 1 sample per pallet or less from each production run

 b) 1 sample per 3 pallet or less from each production run

 c) 1 sample per 3 pallet or more from each production run

 d) None of the above

106.

API 936 documentation should content

 a) Execution details

 b) Design details

 c) Quality standards

 d) All above

107.

The terminology for testing refractory that was sampled during installation in order to confirm that they meet specified physical property standards is called

 a) As – installed testing

 b) physical property test

 c) both of the above

 d) None of the above

108.

Arrange for testing at either an independent laboratory or the manufacturer’s plant is

 a) owner responsibility

 b) inspector responsibility

 c) contractor responsibility

 d) manufacturer responsibility

109.

Refractory cast into a mock up may be stripped and visually inspected after a minimum curing of

 a) 8 hrs

 b) 12 hrs

 c) 16 hrs

 d) 24 hrs

110.

Pyrometric cone is a three sided truncated pyramid Has

 a) Base 5/8 in (16 mm) wide and 2 5/8 in (66 mm) in height

 b) Base 1 1/8 in (29 mm wide and 3/8 in (10 mm) in height

 c) Base 1 1/8 in (29 mm) wide and 3/8 in (10 mm) in height

 d) manufacturer responsibility

111.

The standard size of a fabricated test panel for pneumatic gunning qualification is

 a) (500 mm x 500 mm)

 b) (600 mm x 600 mm) 24 “x 24”

 c) (700 mm x 700 mm)

 d) None of the above

112.

Gunning test panels are constructed with removable backs as required for

 a) laboratory test

 b) visual inspection of the castable

 c) physical property test

 d) None of the above

113.

Fiber concentrations typically range is

 a) 1 – 4 wt percent

 b) 1 – 3 wt percent

 c) 1 – 2 wt percent

 d) Any of the above

114.

Applicator qualification for thin layer erosion resistant lining, each applicator shall pack a test panel of size.

 a) 12” x 12” x ¾ or 1” (300 x 300 x 20 or 25mm)

 b) 500 x 500 x 25mm

 c) 450 x 450 x 50 mm

 d) None of the above

115.

For air-setting phosphate bonded, erosion – resistant refractories mixing , the mixer’s paddles and bowls shall be

 a) Aluminium

 b) Steel

 c) Carbon

 d) None of the above

116.

Spalling of layers from the hot surface of a refractory lining is called

 a) spalling

 b) sheeting

 c) crumbling

 d) erosion

117.

The effective diameter of metal fiber is

 a) 0.2 – 0.3mm

 b) 0.3 – 0.6 mm

 c) 0.4 – 0.8mm

 d) None of the above

118.

Applicator qualification for plastic thick layer, the test panel with an applied lining thickness and anchorage shall be

 a) 600mm x 300 mm (24” x 12”)

 b) 300 x 300 mm

 c) 500 x 500 mm

 d) None of the above

119.

Additives used to facilitate moisture removal of refractory linings during dry out is called

 a) metal fiber

 b) organic fiber

 c) mineral fiber

 d) none of the above

120.

The surface of a refractory section exposed to the source of heat

 a) hot face

 b) cold face

 c) smooth face

 d) None of the above

121.

The length of metal fiber is

 a) 19mm or 25mm

 b) 30 or 40mm

 c) 10 or 15mm

 d) None of the above

122.

The surface of a refractory section not exposed to the source of heat

 a) hot face

 b) cold face

 c) smooth face

 d) None of the above

123.

Heating the new refractory too rapidly will cause

 a) structural deterioration

 b) explosive spalling

 c) chemical attack

 d) none of the above

124.

As installed testing is the terminology for testing refractory that was sampled during installation in order to confirm that they meet specified.

 a) Physical property standards

 b) Chemical property standards

 c) Both as above

 d) None of the above

125.

The formation of slag take place by chemical action and fusion at furnace operating temperature in the way of

 a) In smelting operation, through the combination of a flux, such as limestone, with the gangue or waste portion of the ore

 b) In the refining of metals by substances such as lime added for the purpose of affecting or aiding the refining

 c) By chemical reaction between refractories and fluxing agents such as coal ash, or between two different types of refractories

 d) All of the above

126.

The term that describes the condition of pre-set refractory in which gravitational forces cause it to lose its desired shaped is called

 a) Bloating

 b) Punky

 c) Slumping

 d) none of the above

127.

Preparing detailed specification related to using products, thickness, etc is responsibility of_____________

 a) Owner

 b) Contractor

 c) Inspector

 d) Manufacturer

128.

A moldable refractory material that can be extruded and has a level of workability that permits it to be pounded into place to form a monolithic structure

 a) Ramming mix

 b) Plastic refractory

 c) Monolithic refractory

 d) None of the above

129.

Destructive chemical reaction between refractories and external agencies at high temperatures, resulting in the formation of a liquid is called

 a) slagging of refractories

 b) slumping of refractories

 c) dusting of refractories

 d) None of the above

130.

Conventional refractories means

 a) Castable refractories containing more than 25%Ca0

 b) Castable refractories containing less than 2.5% Ca O

 c) Castable refractories containing minimum 25% Ca O

 d) Castable refractories containing maximum 2.0% Ca O

131.

Pre-turn around planning means.

 a) at least 6 months prior to turnaround

 b) at least 12 months prior to turnaround

 c) at least 8 months prior to turnaround

 d) any of the above

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Stay Updated with the Latest API 936 Exam Questions and Answers

Get access to the latest API 936 Exam Questions and Answers specifically tailored for refractory personnel with this easy-to-understand resource. Stay updated with the most recent information in the field and enhance your knowledge of refractory materials and installation practices. This comprehensive guide offers a user-friendly approach to help you prepare for the API 936 exam effectively. Whether you’re a beginner or an experienced professional, these questions and answer sets will provide valuable insights and boost your confidence. Start studying today to ensure success in your API 936 exam and excel in your role as refractory personnel.

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