TffiVruA^1 AtTIE[,' EHLJAN QUOC GIA

TCVN 6008 : 2CI10

Xudt brin lin 2

THIET BI AP LUC _ rVI6I HAN _

YEU cAu KY THUAT vn PHUONG PI-IAP THU

Pressure equipments - Wetds -Technical requirements' and testing methods

c6uo rY cd nrAN Krf;M DINH vArruCN r,w$r.r KTAT r"Ao DQNG'\A19;

TAI LIEU KIEM SOATsq.ffa*r-..1J:-rr -rcu

HA NOt- 2010

TCVN 6008 :2010

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/lL&i n6i dAu

TCVN 6008 : 20'10 thay the TCVN 6008 : 1995.

TCVN 6008 : 2010 do Ban k! thuQt ti€u chuAn qu6c gia TCVN/TC 11

ndi noi vd binh chiu 6p tvc bidn soan, T6ng cgc Ti6u chuin Do luong

Ch6t luqng dA nghi, B0 Khoa hsc vd COng nghe c6ng b6.

TrCu cHUAN ouOc ctA TCVN 6008 :2010

.lI9.T".coffiiHUAN iuy€N KTAT r-oo poxc" i

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?'Ar Lr6u sldvr so{TThiet b! 6p lgc - Mdi hdrn -Y6u cau ki thuqt vi phuong phap thu

Pressure equipmenfs - Welds -Technicat requirements and testing methods

1 Phgm vi 6p dqng

,2Ti€u chudn nriy quy dinh c6c y6u cdu k! thu6t vd han, nhi6t luy6n, phuong phap thfr ddi v6i cdc mdi hdn

c0a thidt bi6p luc.

Ti€u chudn nay kh6ng 6rp dung cho c6c mdi hdn vdy mdim, mdi han v6y cung.

2 Ta,liQu viQn dAn

C6c tdi li6u du6i d6y ld rdt cdn thidt ddi v6i vi6c 6p dung ti6u chudn ndy. D6i v6i tdi lieu c6 ghi n6m cong

bd, 5p dung phi6n b6n duoc n6u. Ddi v6itdi li6u kh6ng c6 nim cong bd, 6p dung phi6n b6n m6i nhdt kd

cA cAc srla ddi.

TCVN 1830 : 2008 ( ISO 8492 : 1998 ), Vat IiQu kim toai - 6ng - Thtr nen bep.

TCVN 5115 : 2009 ( lSO 796-" : 2006), Th? khong pha hufr - Th? s!6u 4m - Dde trung *v tttuil crta mdu

chudn sd 2.

TCVN 5400, M6i han - Ydu cdu chung vd tdy mdu ad tn(r co ffnh.

TCVN 5401, M6i hdn - Phuong phap thtt u6n.

TCVN 5402.2009(1SO9016: 2001), Thirphahulm6i hdnkimloqi -Th(rdQdaivadQp -Vitrimduth(t, huang rdnh khia vd ki6m tra.

TCVN 5873 ( ISO 2400), Mdi hdn thdp - Mdu chudn dd chudn thi6t bi dung cho ki6m tra si6u 6m.

TIEU CHUAN OUOC GIA TCVN 6008 i 2A10

Thi6't bi ep lgc - Mdi hirn -

.g)g..lyqqo*,ffiHUAN;UYEN KTAT laO OOttC

r?al r,r8u srdnn soiiqn.

Y6u cdu ki thugt vdr phuong phap th&

Pressure equipmenfs - Welds -Technicat requirements and testing methods

1 Pham vi 6p dqng

Ti6u chudn ndy quy dinh c6rc y6u cdu k! thu6t vd han, nhi6t luy6n, phudng phSp thfi ddi v6i c6c mdi hAn

c0a thidt bi 6p [rc.

Ti6u chudn ndy kh6ng 6p dung cho c6c mdi hdn vdy mdm, mdi hdn v5y cung.

2 Tai ligu viQn d5n

C6c tdi li6u du6i d6y ld rdt cdn thidt ddi v6i vi6c 6p dr,rng ti6u chudn ndy. Ddi v6i tdi li6u c6 ghi ndm c6ng

bd, 6rp dung phi6n b6n drroc n6u. Ddiv6itii li6u kh6ng c6 ndm c6ng bd, drp dung phi6n b6n m6i nhdt kd7 . . -2,ca cac sua ool.

TCVN 1830 : 2008 ( ISO 8492 : 1998 ), Vil tiQu kim toai - 6ng - Thtt n6n bgp.

TC\.1t\i 51 15 : 2009 ( lSO 796.3 : 2006), Th? khAng pha hu! - Th* si6u dm - Ddc trmg k! thult cfia m1u

chudn sd 2.

TCVN 5400, M6i hen - YOu cAu chung vd tdy m1u dd thtr co tinh.

TCVN 5401, Mdi hdn - Phuong phapth?u6n.

TCVN 54A2 :2009 ( ISO 9016: 2OO1), Th& pha hu! mdi hdn kim loqi - Thtt dQ dai va dQp - Vi trl mdu

thL, hu1ng rdnh khia vd ki6m tra.

TCVN 5873 ( ISO 2400), Mdi hdn th6p - M1u chudn dd chudn thi6t bi dung cho ki6m tra si6u dm.

TCVN 6$CI8 : 2010 , '; ," , :i, !.,

TCVN 6111 : 2O0g ( lSO 5579:1 998);'Th0 khlng pha hu! - Ki6m tra chqtp dnh btrc xq cdc vat lieu kim

loqi bdng tia X vit gama - Cag quy tdc'io bdn,

TCVN 6294:2007( ISO 4706 : 1989 ), Chai chua khf- Chai chaa khi bdng thep hdn co thd nap tqi.

TCVN 6413: 1998 ( ISO 5730: 1992), Ndi hdi cd dlnh 6ng ld 6ng t&a cdu tqo hdn ( Tru c6c ndi hoi 6ngnuoc ).

TCVN 6735 : 2000 ( BS 3923-1: 1986), Ki6m tra cdc mdi hdn bdng si6u 6m - Cac phuang phap ki6m

tra bdng tay cdc mdi hdn nong chdy trong thep ferit.

TCVN 7704 :2007, Ndi hai- Y€u cdu ki thuQt vd thidt k6, kdt cdu, tdp dQt, s0 dqng vd s?a choa.

TCVN 7763:2A07 ( ISO 22991 :20Q4 ), Chai chua khi - Chai chua khf bdng thep hdn nap tai duqc

ding cha khf ddu m6 hoa t6ng( LPG)- Thi6t kd vd chd tqo.

TCVN 8310 : 2010 ( ISO 4136 : 2001 ), Thir pha hu! mdi hdn tr6n vQt liQu kim loqi - Thtr kdo ngang.

TCVN 8311 : 2010( ISO 5178 : 2001), Th[r pha hu! m6i hdn tr*n v1t liQu kim toai - Thtr k6o doc kim

loai m6i hdn tr1n m6i hen nong ch|y.

TCVN 8366 : 201A, Binh chiu itp lqrc - Y6u cdu vd thi6t kd vd chd tao

3 Quy dinh chung

3.1 C6 thd sfi dung moi phuong ph6p hirn nhrJ: hdn hoi, hdn di6n hd quang, hin xi di6n, hdn di6n c6

khi b6o vO .v..v... ed fran cdrc b6 ph6n chiu 6p h/c cria thidt bi 6p fuJc.

C6ng nghd hAn, phuong ph6p thr? mdi hdn ph6i duoc quy dinh trong tiri li6u k! thuAt ctla co quan thidt

kd.

3.2 Chi nhirrrg thd hAn c6 dfr trinh d6 m6i drroc hdn c6c b0 ph6n chiu 5p luc c0a thidt bi 6p h,lc.

3.3 Chi duoc ph6p tidn hinh hirn c6c b6 ph6n cOa thidt bi 6p lr,rc sau khi dE kidm tra x6c dinh vi6c gia

c6ng vir gd lilp d6m b6o y6u cdu k! thudt.

3.4 Vdt li6u que hdn ph6i phD hop v6i vdt liQu chd tao thi6t bi chiu 5p hJc. VAt li6u cOa que hdn dinh vdr

que hdn chinh ph6i cing m6t loai.

3.5 C6c y6u cdu k'i thuAt chi tidt vd han, nhi6t luy6n, phuong ph5p thfi ddi v6i c6c mdi hirn cOa c6c loai

thidt bi chiu 6p luc theo c6c ti6u chudn qudc gia nhu sau :

- Ndi hoi theo TCVN 77A4:2A07;

- Ndi hoi cd dinh dng lo dng lfia cdu tao hdn (trrJ c6c ndi hoi dng nu6c) theo TCVN 6413 : '1998

( ISO 5730 : 1992);

- Binh chiu 6p luc theo TCVN 8355 : 2009;

6

CC'NG,TYcdpffiHUAN iuyEr.r KTAT lao offeyi 6008:201A

Chai chrla khi bing th6p hdn c6 thd nap lai

Chai chrla khi bing th6p hirn n?p lqi

TCVN 7763:2007 ( ISO 22991 :2004).

(LPG) theo

4 YOu c6'u kV thuit

4.1 Tru6c khi hin phAi ldm sach c6c m6p mdi hdn vir phdn kim loai nim kd UCn ddn khi thdy 6nh kim.

Chidu r6ng kho6ng ldm sach tdithidu ld 10 mm m6i ben.

4.2 Ph6i tdy sach xi hAn l6p tru6c m6i drtoc hirn l6p sau.

4.g Khi nhi6t d6 kh6ng khf xung quanh du6i 0 0C kh6ng duoc ph6p hin chd tao bdt cf bO phdn chiu 5p

luc ndo ndt fd chi tidt d6 chd tao bing loai th6p gi vA v6i chidu day bdt ky.

4.4 Khi hdn gi6p m6p c6c ong th6p cacbon c6 duong kinh kh6c nhau cho ph6p nong ngu6idng nh6 kh6ng

quA3o/o dudng kfnh trong c0a n6 khi dudng kinh dng nh6 ddn 83 mm vi chidu ddy thinh dng ddn 6 mm.

4.5 Cho ph6p hirn tu d6ng vA hdrn tay trdn cirng m6t mdi hdn.

Mdi hdn tr/ d6ng c6 hAn ddp th6m bing tay kh6ng qu6 15% tidt di6n ngang mdi hin v5n duoc coi li mdi

han tU dgng.

4.6 C6ng nghd hdn ph5i d6m b6o rlng sudt xudt hi6n trong m6i hdn kh6ng l6n hon tri sd cho ph6p.

4.7 Hd sd dQ bdn cria mdi hdn di6n, hirn hoi do co quan thidt kd quy dinh nhulng kh6ng drJoc l6n hdn tri

sd trong B6ng 1.

4.8 Mdi hdn ph6i d6m b6o:

a) Khi kidm tra do dac bdn ngoii kh6ng c6:

- Vdt nrlt bd mdt mdi hirn vir phdn kim loai n6ng ch6y;

- Ch6 bu6u, lem, ch6y th0ng, hAn kh6ng ngdu vir nhirrrg khuydt tit c6ng ngh6 kh6rc;

- Ch6 g5y g6c, l6ch m6p;

- Sai l6ch kfch thu6c, hinh dang mdi han, cilng nhu phdn ldi tdng bdn kh6ng dUoc ph6p.

7

j , C6ng nghQ vi phdong ph6p hirni- .-..

1. Hin blng tay

- Mdi hdn gi6p m6p m6t phia kh6ng c6 tdm l6t

- Mdi hAn gi6p mep m6t phia c6 tdm l6t

- Mdi hdn gi6p m6p hai phia

2. Hdrn tU dQng

- Mdi hdn gi6p m6p m6t phia khOng c6 tdm l6t

- Mdi nan gi6p m6p hai phia

H9 sd d9 bin cfra mdi hin

0,70

0,90

0,95

0,80

1,00

b) Khi kidm tra kim tudng:

- Kh6ng bi ntlt trong kim loai n6ng ch6y cOng nhu trong c6c vDng chiu Anh hu6ng nhi6t c0a kim loai co

b6n;

- Kh6ng c6 ch6 han kh6ng ngdu giira c6c l6p han v6i bia mep;

- Kh6ng c6 ch5 hdn thidu 6 chdn mdi han qu6 15% chidu ddythdnh hoic qu5 3 mm ndu thdnh diytrdn 20 mm ddi v6i s6n phdm cni han m6t phia;

- Kh6ng c6 15 xdp vd ngAm xi qu6 S vdt/t cm2 v6i kich thu6c m6i fnuydt tAt kh6ng qu6 1,5 mm vd tdng

c0a ch0ng kh6ng qu6 3 mm;

- Kh6ng c6 vdt n0t, ran phdn cdu tao lirm gi6m tinh ddn hdi vd tinh d6o c0a kim loai.

c) Khithfrthuf luc:

- Trdn mdi hdn kh6ng c6 hi6n tugng ran ntfi;

- Kh6ng c6 hi6n tugng rd ri nr.r6c;

- Kh6ng c6 hi6n tugng bidn dqng 16 rdt.

4.9 Kdt qu6 tht? k6o mdi han, tinh bing trung binh cQng kdt quA cOa c5c m5u thir, khong duoc thdp

hon dd bdn tdi thidu cfra th6p tudng r3ng, trong d6 kh6ng c6 m6t m5u ndo thdp hon 10% dO bdn tdi

thidu.

4.10 Kdt qu6 tnfr udn mdi hin khOng duEc thdp hon tri sd trong B6ng 2.

Ddi v6i chi tidt chdtao blng c6c loai v6t li6u kh5c kh6ng n€u trong BAng2, tri sdg6c udn do cd quan

thi6t kd quy dinh.

8

s 2 - G6c u6n cho ph6p nh6 nhdt l-FiAhrt!*Urittnna SO{1'

Loai th6p

G6c udn

Hin diQn, hin ti6p xtic, hin xi

dign khi chiiu diy b9 phfn hin,mm

Hdrn hoi khi chidu

diy thinh kh6ng l6n

hon 12 mm

Ddn 20 Lon hon 20

- Th6p cacbon

TLa- Lr.. l.:- rLd.- ------..:- rlrelJ nop Kilil Utap Inangail va

silic-mangan

- Th6p hgp kim thap crom-

molipden vA crom-molipden-

vanadi

- Th6p hop kim cao crom

- Th6p hgp kim cao crom-

molipden

100

6nOU

50

50

100

100

OU

40

4A

100

70

ENCU

30

30

30

cdGfY;6;--i suAN'""8,f*i'^TIpS$KU$i nhat kh*rrrhqfii*di#"" ";i;

2010

BAnq2 -G6cudn

4.11 Tri sd dQ dai va dQp c0a kim loai mdi hdn kh6ng duEc thdp hon tri sd trong B6ng 3.

Bing 3 - Tri sd d9 dai va dfp cfia kim logi moi han

4.12 Nhi6t luy6n mdi hAn

a) Nhirng truong hop sau dAy ph6itidn hAnh nhi6t luy6n sau khi hAn:

- Khi hin thep hop kim c6 chidu ddy tu 1Omm tr6 l6n;

- Khi han th6p cacbon c6 hirm lugng cacbon d6n 0,27o/o v6i chidu ddy tU 35 mm tr6 l6n;

- Khi hdn thep cacbon c6 hdm lugng'cacbon trdn 0,27o/o v6i moi chidu ddy do ngudi thidt kd quy dinh.

b) Chd dO nhi6t luy6n vd phuong phSp nhi6t luy6n do ngudithidt kd quy dinh.

I

Nhi6t d6 m6itnrong khithff, oCTri sd dQ dai va dgp nh6 thdp nhdt c0a mdi han, Nm/cm2

V6i tdt cA c6c loai th6p truth6p austenit V6ith6p austenit

20

Thdp hon 0

49,05

19,62

68,67

29,43

TCVN 6008 : PCI'!0

c) Cho ph6p nhi6t luy6n ri€ng trrng mdi hdn hodc chung cirng v6i b6 phdn chiu 5p tuc, nhr"mg ph6i nhi6t

luy6n tru6c khi kidm tra chdt h/dng mdi hdn.

5 Thirchi't lugng moi han

5.1 Quy dinh chung

5.1.1 Don vi chdtao, ldp ddt, s0a ch0a ph6i td chfc thfrchdt luong mdi hdn do minh tidn hAnh 6 cilc

b6 ph6n chiu 6p luc.

5.1.2 Chdt luong mdi hdn phAi duoc thfi bing m6t, m6t sd ho6c todn bd c6c phuong phep sau ddy phu

thu6c vao ioai mdi han va th6ng sei lim vi6c cfra thidt bi:

a) Kidm tra b6n ngodi, 6p dung cho tdt ch cAc loai mdi hdn;

b) Thfi co tfnh;

c) Thfr si6u 6m hodc chidu tia xuy€n qua;

d) Kidm tra kim trlong;

d) Thirthui luc, 6p dung cho tdt cA c1c loai mdi hirn.

5.1.3 Ngoii c6c phuong phap quy dinh 6 5.1.2, c6c mdi hdn ph6i duoc kidm tra bing c6c phuong

ph6p kh6c ndu y6u cdu k! thudt chd tao sAn phdm quy dinh.

5.2 Kidm tra b6n ngoii

5.2.1 Vi6c kidm tra do dac b6n ngodi ph6i tidn hdnh 6 hai phia tr6n todn b6 chidu ddi mdi hdn. Khi

kh6ng c6 kh6 ndng kidm tra do dac mdt trong mdi hdn, cho ph6p chi kidm tra do dac b€n ngoiri.

5.2.2 Bd mdt mdi hdn vd phdn kim loai s6t mdi hdn c6 hai phia ph6i duQc ldm sach khi kidm tra bdn

ngodi. Bd r6ng phdn kim loai phAi ldm sach ldr 20 mm.

5.3 Th&co tinh

5.3.1 Thfi co tinh nhlm x6rc dinh dQ bdn, d6 d6o crla mdi han

C6c dang thil cc tinh bdt buOc gdrn:

a) Th&k6o;

b) Thr} u6n (ddi v6i dng c6 thd thay th& udn bing n6n bep);

c) Th& dO dai 'ra d?p.

5.3.2 Ngodi ba dang thfi quy dinh 6 5.3.1 , tuy theo y6u cdu k! thu6t chd tao vir vdn hdnh c6 thd quy

dinh bd sung c6c dang thfr cd tinh kh6c nhu thr? tt6 cLrng, tI6 c5t va dQp.

5.3.3 Kich thu6c m6u th(r cd tinh theo TCVN'5400

1U

. TCVN 6008 :20105.3.4 Sd luong mdi hAn kidm tra so v6i mdi han cirng loai do m6t thd han tidn hAnh lA:

MQt phdn trdm (1%) ddiv6i th6p cacbon hoic th6p hop kim thdp;

Hai phdn trdm (2o/o) ddi v6i th6o hop kim austenit nhung kh6ng lt hon m6t mdi ddi v6i m6itho han.

5.3.5 Kich thrJ6c c6c tdm, dng kidm tra ph6i dAm b6o c5t O0 sd m5u cdn thidt cho c5c ph6p th&.

5.3.6 Tu mdi hirn s6n phdm (hodc mdi hdn tdm (dng) kidm tra) phAi l6y ra:

Hai m5u thrS k6o;

Hai m5u tht? udn (hodc n6n bep);

Ba m6u thrt do dai va dAp.

5.3.7 Mdi ndn s6n phdm vd mdi hin tdm (dng) kidm tra ph6i do cirng m6t tho hdn tidn hirnh trong cirng

m6t didu ki6n nhu nhau.

5.3.8 Thr? k6o phAi thrJc hi6n theo TCVN 8310 : 2010 ( ISO 4136 : 2001) vA TCVN 8311 : 2010( tSO

5178:2001)

Thrl k6o kh6ng bdt UuQc ddi v6i nhitng mdi hin ngang d6 duoc kidm tra lOO% bdng si6u 6m.

5.3.9 lhU uon pnat tnuc nten tneo tuvN b4u1

Cho ph6p thay th6 thr? udn bang thfr n6n bep theo TCVN 1830 : 2008( ISO 8492 : 1998 ) ddi v6i c6c

dng dudng kinh nh6 hon 100 mm vd chidu dAy thdnh nh6 hon 12 mm.

5.3.10 Thfi d6 dai va d6p ph6i thrlc hi6n theo TCVN 54A2 :2009. .

5.3.11 MEu (s6n phdm) hdn coi nhukh6ng daty6u cdu ndu v6i m6t dang thf/bdt ki'kdt qu6 cfra m6t

trong c5c m5u thdp hon chi ti6u quy dinh vd dO bdn vir g6c udn qu6 10%.

5.3.12 Khi kdt qu6 tnfi 6 m6t dang ndo d6 kh6ng dgt y6u cdu thi ph6i tidn hanh thfi ldn th0 hai 6 dang

d6 v6i sd luong m6u gdp d6i c6t ra tu cirng mdt tdm (dng) kidm tra vd c0a cDng thd hen d6.

5.3.13 M5u (sAn phdm ) hdn bi loai b6 ndu mQt trong sd c6c miu th0ldn thrS hai cho kdt quA kh6ng

dat y6u cdu.

5.4 Thfr si6u im vi chidu tia xuy6n qua (Gama, Ronghen).

5.4.1 Kidm tra mdi hin bdng si6u dm hodc chidu tia xuy6n qua nhim ph5t hi6n nh0ng khuydt tqt b6n

trong mir mdt thuong kh6ng nhin thdy dugc.

5.4.2 Vi6c kidm tra bing si€u 6m ph6i thrtc hi6n theo TCVN 6735:2000 ( BS 3923-1: 1986). MAu

chudn ding trong kidm tra bing si6u 6m theo TCVN 5115 (lSO 7963 ) vd TCVN 5873 (lSO 2400 :).

5.4.3 Vi6c kidm tra bing chidu tia xuydn qua ph6i thuc hiQn theo TCVN 6111 : 2009 (lSO 5579 :

1 9e8).

ccuc rY cd IoHA"l-l t<lplvt DINH vAI.IUAN;-UYEN KTAT LAO DONG

\ A ;' a-TAI [.IS.]{J Xr'EEh{ S{}AT

S0:............

11

TCVN 6008:2010

5.4.4 Khdi luEng mdi hdn th& si6u 6m hodc chidu tia xuydn qua kh6ng duoc nhd hon khdi luong trong

BAng 4.

Bing 4 - Khdi luqng m6-i trin thfrsi6u im hoic chi6-u tia xuy6n qua

5.4.5 Cho ph6p gi6m khdi lugng kidm tra bing si6u 6m vd chiSu tia xuy6n qua khi duoc ph6p c0a co

quan c6 thdm quydn.

5.4.6 Kdt quA thrl si6u 6m mdi hdn duoc d6nh gi6 theo TCVN 6735 : 2000 ( BS 3923-1: 1986) ; bing

chidu tia xuy6n qua duoc d6nh gi6 theo TCVN 6111: 2009 (lSO 5579 : 1998).

5.4.7 Cho ph6p thay phuong ph6p thfi si6u dm vd chidu tia xuy6n qua bing phuong ph6p kh6ng pha

huf kh6c khi duoc ph6p ctia cd quan c6 thdm quydn.

5.5 Kidm tra kim tudng

5.5.1 Kidm tra kim tudng ph6i tidn hdnh trong c6c tnlong hop sau:

- Mdi hdn 6 c6rc b6 phan c6 nhi6t d6 lim vi6c l6n hon 4500C vA 6p sudt l6n hon 4MPa;

- I'"4di hin & c6c bQ ph6n ldm vi€c & 6p sudt !6n hcn S!'#Pa vdi nhi€t dG b6't xy';

- Mdi hdn c6c dng cut vdo bal6ng, dng g6p (ndu kh6ng dd si6u 6m hay chidu tia xuy6n qua) 6 6p sudt

l6n hon 4MPa;

- Mdi hin c6 gAn dgc vd hirn giri vdo dng.

5.5.2 Sd luong m6u kidm tra kim tuong lir:

- it nhdt m6t m5u ddi v6ith6p c6rcbon;

- it nna't ti hai m5u ddiv6ith6p hop kim.

12

C6ng d$ng vir th6ng sd lam viQc cia thiCi b!

ff l9 ctrldu diri ci'n th&v6itdng

chiiu dii, hay sd luqng mdi han

dng cdn thfr so v6i sd lugng mdi

hin, o/o

'" : '

', :'t .; '' '

- Lrim vi6c v6i 5p sudt l6n hon SMPa vir nhi6t d6 thdnh l6n hon

2000c vd nh6 hon -700c.

- LAm vi6c v6i 6p sudt ddn 5MPa vdr nhi6t d0 thinh tU -700C

ddn + 2000C.

- Ldm vi6c v6i 6p sudt ddn 1,6MPa vd nhi6t d6 thdnh tU- 400C

ddn +2000C.

100

100

50

25

TCVN 6008 :20105.5.3 C6ch ldy m5u, kich thu6c, hinh dang m5u kidm tra kim tudng ph6i theo dung c6c y6u cdu k!thu6t quy dinh trong c6c ti6u chudn hi6n hinh.

5.5.4 Khi kdt qu6 kidm tra kim tuong kh6ng dat y6u cdu ph6i thfi lai ldn thrl hai tr€n hai mau cdt ra tumdi han sAn phdm. Mdi hin coi nhu kh6ng dqt ydu cdu khi kdt quA thr? tdn thfi hai kh6ng dat.

5.5.5 Ddi v6i nhirng mdi hdn dqt ydu cdu khi thr? si6u 6m hodc chidu tia xuy6n qua nhung cho kdt qu6

kh6ng dat khi kh6o s6t kim tudng thi ph6i kidm tra lai 1P%_nrdi lAn sin phdm bing chinh nh1ngphUong ph6p khong pha hui da sdrdung.

5.0 Thfrthui, !'\rc

5.6.1 Mdi hdn c6c b6 ph6n chiu 6p lr/c c0a thidt bi 5p

chdt l6ng kh6c c6 tinh chdt tuong duong.

5.6.2 Ap suat tht? thuf luc phAi phir hop v6i c6c tri sd trong B6ng b,

5.6.3 Thoi gian duy tri 6 6p sudt thfi it nhat l2r 5 min.

Ap sui't th&,MPa

Binh (trrt binh dric), ndi hoi

BO qu6 nhi6t (1)

86 h6m nudc ngSt ddoc(2)

86 h6m nu6c kh6ng ngSt

d'Jdc(2)

C5c dng d6n, dng tidp nhi6t

khi thg:"i6ng t"ttrg dng.

Binh dtc

'ril u0u mmlna so.,(r

13

coNc.ry cci pna'Nf iTilL vI}TUAN LUYEI.I KTAT LAO DONG

BAng 5 - Ap sudt tnfrthuf tgc

Ap sui't thi6i kdP,ltD^tttr q

P ddn 0,5

P trdn 0,5

P

P

P

2P nhurg kh6ng nh6 hon 0,2

1,5P nhung kh6ng nh6 hon 1,0

1,5P

1,5P

2P

2P nhrn'rg kh6ng nh6 hon 0,3

1,5P nhrtng kh6ng nh6 hon 2.0

cHu rHicH :

(1) Ap sudt P ld 6p sudt tfriSt kd c0a ndi noi khi ra kh6i b6 qu6 nhi6t.

{2) 86 hAm nrr6c ngSt cfrroc: 6p su6't P la dp sud't thiSt kd crja b6 hdm ntl6c.

86 him nu6c kh6ng ngSt drroc: 6p sudt P ln ap sudt tnidt k€i c0a ndl noi.