An AST ASTM A53 Gra Grade B pipe wit with a max maximum wall thickness of 0.5! is "ein# considered for use in a cold ser$ice. %hat minimum temperature can it "e used and not ha$e an impact test& a. ". c. d.
%hich of the followin# fluid ser$ices or classes of pipin# are excluded from the specific re*uirements of A+, 50& a.-aardous fluid ser$ices "elow threshold limits defined "/ urisdictional re*uirements re*uirements ".+ipin# or tu"in# with an outside diameter not exceedin# that of +S 2! c.onmetallic pipin# and pol/meric or #lasslined pipin# d.All of the a"o$e
3. )or weldin# a 4 B sch 140 low allo/ pipin# 61 7 8 cr9 cr9 1:(8 Mo; to 6(7
+reheat at 300 o) min. and +%-T +%-T in ran#e 1300 o) > 135 o) o preh prehea eati tin# n# "ut "ut +%+%-T T in in the the ran# ran#e e 130 1300 0 1?00 1?00 o) +reheatin# at 350 o) min and +%-T in the ran#e 1300 135 o ) +reheatin# at 350 o) and no +%-T
+%-T +%-T was was ca carr rrie ied d out out on (@0 (@0 weld welds s on pipe pipes s of + o 3 mate materi rial al in in ( "atches of 6A; (00 and 6B; @0 respecti$el/. Batch A was carried out in furnace and Batch B "/ local heat treatment. )rom "atch A9 (@ samples and from Batch9 ?0 samples were tested for Brinnel hardness. And "rinnel hardness $alues were "etween (0@ to ((( -B for "atch A while for Batch B it was "etween (01 to ((5 -B.
our assessment is a. ". c.
Batch Batc h Batch Batch tch Batch Batc Ba tch h
A A B A A B A
sam sampl ple es si ie e C hard hardne ness ss "oth "oth no nott acc accep epta ta"l "le e sample sie C hardness "oth DE sa sampl mple si sie e C hard ardnes ness "o "oth DE. DE. sample sie C hardness "oth DE samp sa mple le sie sie inad inade* e*ua uate te "ut "ut hard hardne ness ss DE
d.
5.
ASTM A 105 flan#e 6300 l" ratin#; maximum s/stem h/drostatic pressure shall not exceed a. ". c. d.
4.
400 psi ?50 psi 1110 psi 11(5 psi
Suita"le ratin# for pipe flan#es 6A105; for Fesi#n pr ?00 psi9 desi#n temp ?00 o) will "e a. ". c. d.
.
Batch B sample sie ade*uate "ut hardness not accepta"le Batch A sample sie C hardness "oth DE Batch B sample sie inade*uate "ut hardness DE
400 l" min. 300 l" min ?00 l" min one of the a"o$e
A car"on steel ASTM A 53 Grade B material is "ein# impact tested. %hat is the minimum ener#/ re*uirement for this material 6a$era#e for 3 specimensfull/ deoxidied steel;& a. ". c. d.
ftl"s 10 ftl"s 13 ftl"s 15 ftl"s
@.
%here the desi#n temperature of the s/stem is the same as the h/drostatic test temperature9 the h/drostatic test pressure shall not "e less than 6ield stress durin# h/drotest is not #o$ernin# factor.; a. ". c. d.
J.
%hat is the lon#itudinal weld oint factor9 H9 for A+, 5K HL% 6Hlectric Lesistance %elded; pipe& a. ". c. d.
10.
that calculated accordin# to ASMH Sec. I,,,
1.00 0.J5 0.@5 0.40
S! is defined as the stress $alue for material from Ta"le A1 of ASMH B31.3. +ick the $alue of S! when the material is ASTM A335 Grade +5 and the temperature is J50 de#rees ). a. ". c.
REFERENCE B 31.39 Ta"le A19 Ta"le 3(3.(.(.A A+, 509 1.(.( A+, 5?9 Ta"le 19 B 31.39 Ta"le 330.1.1 and 331.1.1 B 31.39 331.1. 6a; B 14.59 (.5 and Ta"le (1.1 B 14.59 Ta"le (1.1 B 31.39 Ta"le 3(3.3.5 B 31.39 3?5.?.( B 31.39 Ta"le A1B B 31.39 Ta"le A19 +a#e 14?