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1、B LAO NG - THNG BINH V X HING NG DN HI NC, NC NNG - QUY TRNH KIM NH K THUT AN TONQTK 04 : 2008/BLTBXHH NI - 2008Li ni uQuy trnh kim nh k thut an ton bnh chu p lc do Cc An ton lao ng bin son, B Lao ng - Thng binh v X hi ban hnh theo Quyt nh s 67/2008/BLTBXH ngy 29 thng 12 nm 2008. QUY TRNH KIM NH K T
2、HUT AN TON NG NG DN HI NC, NC NNG1. Phm vi p dngQuy trnh kim nh ny quy nh v trnh t, th tc kim nh k thut an ton ln u,nh k v bt thng cc h thng ng ng dn hi nc, nc nng (sau y gi l h thng ng ng) thuc Danh mc cc loi my, thit b, vt t c yu cu nghim ngt v an ton lao ng do B Lao ng Thng binh v X hi ban hnh.Cn
3、 c vo quy trnh ny, c quan kim nh p dng trc tip hoc xy dng quy trnh c th, chi tit cho tng dng h thng ng ng nhng khng c tri vi quy nh ca quy trnh ny. 2. Tiu chun bt buc p dng Bao gm nhng tiu chun k thut quc gia v an ton sau : + TCVN 6158:1996: ng ng dn hi nc v nc nng yu cu k thut. + TCVN 6159:1996: ng
4、 ng dn hi nc v nc nng - phng php th. + TCVN 6008:1995: Thit b p lc - Mi hn yu cu k thut v phng php kim tra. + TCVN 4395:1986 Kim tra khng ph hy - Kim tra mi hn bng tia Rnghen v gamma.3. Cc bc kim nhQTK: 04-2008/BLTBXH2Tin hnh xem xt, kim tra k thut an ton theo cc bc sau :-Chun b kim nh : Mc 3.1-Kim
5、tra h s : Mc 3.2-Kim tra bn ngoi: Mc 3.3-Kim tra kh nng chu p lc : Mc 3.4Lu : Cc bc kim tra tip theo ch c tin hnh khi kt qu kim tra bc trc t yu cu.3.1 Chun b kim nh 3.1.1. Thng bo cho c s v k hoch v cc yu cu trc khi a h thng ng ng vo kim nh.3.1.2. Xc nh v thng nht bin php an ton vi c s trc khi thc h
6、in kim nh. B tr kim nh vin thc hin kim nh. Chun b y phng tin, trang b bo v c nhn, dng c, thit b cho qu trnh kim nh. 3.2 Kim tra h sCn c vo ch kim nh kim tra, xem xt h s ca h thng ng ng:3.2.1 Khi kim nh ln u phi xem xt cc h s sau:a, H s lp t: thit k lp t,s b tr ng ng (v tr mi hn, gi ; b phn b tr gin
7、n, x nc ngng), bin bn nghim thu tng th h thng.b, Cc chng ch kim tra cht lng kim loi ch to, kim loi hn, bin bn kim tra cht lng mi hn.3.2.2 Khi kim nh nh k phi xem xt cc h s sau:a, Bin bn kim nh v phiu kt qu kim nh ln trc.b, S theo di sa cha v bo dng, cc kin ngh c nu trong bin bn thanh tra,kim tra lin
8、 quan n tnh trng k thut ca ng ng (nu c). 3.2.3 Khi kim nh bt thng phi xem xt cc h s sau:Nh mc 3.2.2 v b sung cc h s lin quan n sa cha hoc cc thay i so vi s b tr ng ng trong h s lp t ban u.Lu : i vi nhng h thng ng ng r xut x nhng h s k thut khng y th phi tin hnh lp b sung.3.3 Kim tra bn ngoiQTK: 04-2
9、008/BLTBXH3Trc khi thc hin vic kim tra bn ngoi cn phi c cc bin php m bo an ton cho ngi thc hin kim nh. Thc hin vic kim tra bng mt thng v s dng cc dng c cn thit nh: knh lp, ba kim tra, thc o (thc cng, thc dy, thc cp, thc l, pan me. ) v n chiu sng chuyn dng. + Trc khi kim tra bn ngoi, b mt ca mi hn v
10、phn kim loi c bn nm st vi mi hn phi c lm sch x hn, cc vt kim loi bn ra, g v cc vt bn khc trn chiu rng khng nh hn 20mm ( c 2 pha ca mi hn).+ Kim tra bn ngoi trn ton b chiu di ng v chiu di mi hn theo ng cc yu cu k thut ch to ng dn v quy trnh cng ngh hn; kim tra b mt kim loi v mc n mn. + Kim tra cc b p
11、hn ca ng ng dn; xc nh bin dng v cng vng ca cc chi tit treo, gi ng; cong vng ng ng, gc un ng. + Kim tra mu sn v k hiu theo quy c quy nh.+ Kim tra bt cht ca cc chi tit ghp ni.+ Kim tra tnh trng hot ng cc b phn, chi tit dn n; cc im x, van x nc ng trn ng ng, v tr v tnh trng an ton h x.Kt qu kim tra bn n
12、goi bng mt thng c coi l t yu cu nu b mt ng, b mt v kch thc mi hn ph hp vi cc yu cu k thut ch to ng dn v TCVN 6158:1996.3.4 Kim tra kh nng chu p lc (th thu lc) Phi th thu lc xt kh nng chu p lc ca h thng ng ng theo trnh t sau:Th thy lc c tin hnh sau khi hon thnh vic lp t.3.4.1. Xc nh p sut th: p sut th bng 1,5 ln p sut lm vic ln nht ca ng ng dn .Cho php th thy lc cho ton b ng ng dn hoc cho tng phn on ng ng dn.3.4.2. Tin hnh th thy lc ng ng dn khi nhit mi trng xung quanh ln hn 00C.Khi th thy lc ng ng dn c p sut lm vic ln hn hoc bng 10 MPa, nhit
