B31.3 Flashcards
300.1 Scope
Rules for the Process Piping Code Section B31.3 have been developed considering piping typically found in petroleum refineries;
Pharmaceutical, textile, paper, oreprocessing, semiconductor, and ____1____; food and beverage processing facilities; and related processing ____2___ and ____3____.
1)cryogenic plants
2)plants
3)terminals
301.3.1 Design Minimum Temperature.
The design minimum temperature is the ___1___ ____2____ temperature expected in service
1)lowest
2) component
301.5 Dynamic Effects
301.5.1 Impact.
Impact forces caused by external or internal conditions (including changes in flow rate, hydraulic shock, liquid or solid slugging, flashing, and geysering) shall be taken into ___1___ in the design of __2___.
1)account
2) piping
301.5.2 Wind.
The effect of __1___ loading ___ __ ____2_____ ______ in the design of exposed piping
1) wind
2)shall be taken into account
301.5.3 Earthquake.
The effect of ____1_____ loading _______1________ in the design of piping
1)earthquake
2)shall be taken into account
301.5.4 Vibration.
Piping shall be designed, arranged, and supported to eliminate excessive and harmful effects of vibration that may arise from such sources as impact, _______1______, ______ ____2__ _____, resonance in compressors, external vortex shedding (e.g., wind), and acoustically induced vibration.
1)pressure pulsation
2)turbulent flow vortices
301.6.1 Live Loads.
These __1___ include the weight of the medium ____1____ or the medium used for test. Snow and ice loads due to both ____3_____ and operating conditions shall be considered.
1) loads
2)transported
3)environmental
301.6.2 Dead Loads.
These __1__ consist of the weight of piping ____2____, components, andother superimposed permanent __1__ ____3____ by the piping.
1)loads
2)insulation
3)supported
302.3.3 Casting Quality Factor, Ec
(a) General. The casting quality factors, Ec,
defined herein shall be used for cast _____1____ not having ______2-_____ ratings established by standards in Table 326.1.
1)components
2)pressure–temperature
(b) Basic Quality Factors. Castings of __1__ and _________2 ____, conforming to listed specifications, are assigned a basic casting quality factor, Ec, of 1.00 (due to their conservative allowable stress basis).
1) gray
2)malleable iron
(c) Increased Quality Factors. Casting quality factors may be increased when _____1____ examinations are ___2____ on each ___3___.
1)supplementary
2)performed
3)casting
302.3.4 Weld Joint Quality Factor, Ej
(a) BasicQuality Factors. Theweld _______1_____, tabulated in Table A-1B are basic ____1____ for straight or spiral(helical seam) welded joints for pressurecontaining ___3____.
1)joint quality factors
2)factors
3)components
(e) Weld Joint Strength Reduction Factor. The weld joint strength reduction factor, W, is the __1__ of the nominal stress to cause ___2___ of a weld joint to that of the corresponding base material for an elevated temperature condition of the same duration. It only applies at weld locations in ____3____or spiral (helical seam) welded piping components.
1) ratio
2)failure
3)longitudinal
302.5 Mechanical Strength
(a) Designs shall be checked for adequacy of ________1______ under applicable loadings. When necessary, the wall thickness shallbe increased to prevent overstress, damage, ___2___, or buckling due to superimposed loads from supports, ice ____3____, backfill,transportation, handling, or other loads enumerated in para. 301.
1)mechanical strength
2)collapse
3)formation
(b) Where increasing the thickness would excessively increase local stresses or the risk of _____1______, or is otherwise impracticable, the impact of applied loads may be mitigated through additional ____2____, ___3___, or other means without requiring an increased wall thickness.
1)brittle fracture
2)supports
3)braces
308.2.1 Slip-On Flanges
(a) A ___-__ 1_____shall be ___2___-______ as shown in Figure 328.5.2B when the___3___ is
1)slip-on flange
2)double-welded
3) service
(1) subject to severe ____1____, crevice ___2___, or ___3__ loading
1)erosion
2)corrosion
3)cyclic
(2) ___1___, __2__, or damaging to ___3__ tissue
1)flammable
2)toxic
3)human
(3) __1___ severe __2___ conditions
1)under
2)cyclic
(4) at ______1_____ below __2__ (−150°F)
1)temperatures
2)−101°C
(b) The use of slip-on flanges should be ___1___ where many large ____2_____ cycles are ____3___, particularly if the flanges are not insulated.
1)avoided
2)temperature
3)expected
308.2.4 Flanges for Severe Cyclic Conditions.
Unless it is safeguarded, a flange to be used under ____1_____ conditions shall be welding neck conforming to ASME ___2__ or ASME ___3___, or a similarly proportioned flange designed in accordance with para. 304.5.1.
1)severe cyclic
2)B16.5
3)B16.47
309.2 Specific Bolting
309.2.1 Low Yield Strength Bolting. ___1___ having not more than ___2___ (30 ksi) specified minimum yield strength shall not be used for flanged joints rated ASME __3__ Class 400 and higher, nor for flanged joints using metallic gaskets, unless calculations have been made showing adequate strength to maintain joint tightness.
1)Bolting
2)207 MPa
3)B16.5
309.2.2 Carbon Steel Bolting.
Except where limited by other provisions of this Code, carbon steel bolting may be used with ____1____ gaskets in flanged joints rated ASME B16.5 Class 300 and lower for bolt metal temperatures at___2___ to ___3__ (−20°Fto400°F), inclusive.
1)nonmetallic
2)−29°C
3)204°C
309.2.4 Bolting for Severe Cyclic Conditions.
Low yield ___1___ bolting (see para. 309.2.1) shall not be used for ___2___ joints under severe ___3__ conditions.
1) strength
2)flanged
3)cyclic
309.3 Tapped Holes
_____1_____ for ______2-_____ bolting in metallic piping components shall be of sufficient depth that the thread engagement will be at least seven-eighths times the nominal thread ___3____.
1)Tapped holes
2) pressure-retaining
3)diameter
PART 4 FLUID SERVICE REQUIREMENTS FOR PIPING JOINTS
310 GENERAL Piping joints shall be selected considering joint tightness and ___2___ strength under expected service and test conditions of pressure,____3____ , and _____3____ . See para. 302.5.
1)mechanical
2)temperature
3)external loading
311.2 Specific Requirements
311.2.1 Backing Rings and Consumable Inserts
(a) If a backing __1__ is used where the resulting crevice is detrimental (e.g., subject to corrosion, ____2___, or _____3_____ conditions), it should be removed and the internal joint face ground smooth.
1)ring
2)vibration
3)severe cyclic
(b) Split backing __1__ shall not be used under severe __2__ ___3____.
1) rings
2)cyclic
3)conditions
311.2.2 Socket Welds
(a) _____1_____ joints (para. 328.5.2) should be avoided in any service where crevice ____2___ or severe ___3___ may occur.
1)Socket welded
2) corrosion
3)erosion
(c) Socket __1___ larger than ____2_ (NPS 2) shall not be used under severe _____3______.
1) welds
2)DN 50
3)cyclic conditions
311.2.3 Fillet Welds
(a) Filletwelds in accordance with para. 328.5.2 maybe used as ___1__ welds to attach socket welding ___2____ and slip-on ___3___.
1)primary
2)components
3)flanges
311.2.4 Seal Welds.
____1____ (para. 328.5.3) may be used only to ___2___ leakage of ___3___ joints and shall not be considered as ____3____ any strength to the joints.
1)Seal welds
2)threaded
3) contributing
312.1 Joints Using Flanges of Different Ratings
Where ___1___ of different ratings are bolted together, the ___2__ of the joint shall not exceed that of the lower rated ___3__.
1)flanges
2)rating
3)flange
312.2 Metal to Nonmetal Flanged Joints
Where a ______1____ e is bolted to a nonmetallic flange, both should be ____-2____. A ___-3____ gasket is preferred
1) metallic flang
2) flat-faced
3)full-faced
313 EXPANDED JOINTS
(a) ____1_______shall not be used ___2__ severe ___3___ conditions.
1)Expanded joints
2)under
3)cyclic
314 THREADED JOINTS
314.1 General
(a) _____1_____ should be avoided in any service where crevice ___2___, severe erosion, or ___3__ loading may occur.
1)Threaded joints
2)corrosion
3)cyclic
(b) When ______1_____ are intended to be seal welded, thread sealing ___1___ shall not be_2_.
1)threaded joints
2)compound
3)used
