METHOD STATEMENT COMBINATION OF RADIOGRAPHIC TESTING USING LO-RAD AND CRT EQUIPMENT
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INTRODUCTION
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This This method method stateme statement nt is deve develop loped ed to cover cover the the Radiog Radiograp raphic hic Testin esting g combi combinat nation ion of Lo-Rad equipment and Computed Radiography Testing Testing (CRT) equipment.
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This This method method stateme statement nt is cove covered red by by Radio Radiogra graphy phy Testing sting proced procedure ure and and Com Comput puted ed Radiography Testing procedure.
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"b#ective $ i. To achie achieve ve safe safe dist distan ance ce ! unti untill % mete meters rs using using Lo-R Lo-Rad ad equi equipm pmen entt duri during ng e&posure time. ii. ii. 'ini 'inimi mie e aiti aiting ng time time for for RT resu result lt.. 'ay get get RT resul resultt in fe min minut utes es after after scan the e&posed imaging plate into CRT softare. *o chemical processing ill involve as in conventional film processing. iii. iii. 'inimi 'inimie e time time for fina finali liing ing and and interp interpreti reting ng RT RT resul resultt especia especially lly for for critic critical al and urgent RT #oint. iv. iv. *o using using of of conven conventio tional nal RT RT film film.. Replace Replaced d ith ith CRT CRT imag imaging ing plat platee that can can re-use many time after previous shoot.
SAFETY
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+ll radiog radiograp rapher herss shall shall be be registe registered red ith ith +,L +,L and operate operated d ithi ithin n the the alloa alloable ble permits.
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+ll radiog radiograp rapher herss and and assist assistant ant mandato mandatory ry to to ear ear film film badg badgee or TL TL badg badgee everytime involve ith radiography testing or/.
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The perime perimeter ter of of bound boundary ary beyond beyond hich hich no no radia radiatio tion n level level is is in e&cess e&cess of of 0.% 0.% mR2h mR2hr r (.% 34v2hr) shall be cordoned off ith yello rope (here practical) and arning sign boards and flashing lights shall be placed at strategic locations.
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The radi radiati ation on leve levell shall shall be monit monitore ored d by usin using g a calib calibrat rated ed radiati radiation on surv survey ey meter meter..
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6nderst 6nderstand anding ing77 famili familiari ariatio ation n and com complia pliance nce to Care 8on 8on Tec Techno hnolog logist ist 4d. 4d. hd. hd. radiation safety program hich is approved by +,L is mandatory for each technician involved in radiation e&posure.
SURFACE PRE PREPARATION
9eld or surface of ob#ect to be inspected shall be as follos$ !.1
:ree ree fro from scal cale or eld sla slag.
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4urface 4urface irregul irregularit arity y hen heneve everr possib possible le is is to be remove removed d or dresse dressed d such such that that the the resulting radiographic image is not mas/ed or confused ith the image of any relevant discontinuity that may be present.
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Temporar orary y tac tac/ / el eld ds to to be be gro groun und. d.
METHOD STATEMENT COMBINATION OF RADIOGRAPHIC TESTING USING LO-RAD AND CRT EQUIPMENT
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The finish finish surface surface may be flus flushed hed ith ith the the base base mater material ial or may may be be have have unif uniform orm cron.
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'ethod 'ethodss or prepar preparati ation on shal shalll be such such that that over over heatin heating g or loss loss of materia materiall integ integrity rity does not occur.
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4urface 4urface shall shall satisf satisfy y the the requir requireme ements nts of of the the appli applicab cable le mater material ialss specif specificat ication ions7 s7 ith ith additional conditioning7 if necessary7 by any suitable process to a degree that surface irregularities cannot mas/ or be confused ith discontinuities.
RADIOGRAPHIC EQUIPMENT
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'a#or RT ,quipment i. ii. iii.
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Lo-Rad ,quipment i. ii. ii. iii. iii. iv. v. vi.
'ael 'a 'ats i ith env envelo elopes =rim =rimar ary y bea beam m 'a 'ael el 'ats 'ats ith ith enve envelo lops ps 'ae 'aell oute outerr and and stan standa dard rd inn inner er gui guide de tub tubee Collimator ,lipse 4tand :lash bo&
Comp omputed uted Radi Radio ograp raphy ,quip quipm ment ent i. ii. iii. iii.
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=osph osphor or coat coated ed imag imagin ing g pla plate tess - (>& (>&10 inch inch)) ? (15 (15&1 &1 in inch) ch) @-CR !% *T 4canner *ote ote boo boo/ / it ith h CR CRT soft softa are re
PRIOR TO WORK
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RT equi equipme pment nt setti setting ng for for RT RT Lo-Rad Lo-Rad combin combined ed ith ith CR CRT is is same same as prep preparat aration ion for RT conventional conventional (refer (refe r Radiography Testing =rocedure).
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:or additi additiona onal7 l7 eld eld or or surfac surfacee to be insp inspect ected ed ill ill rap rapped ped ith ith Lo-Rad Lo-Rad 'ael 'ael 'ats 'ats to achieve the safe distance !-% meters. 4ee :igure 1.0.
METHOD STATEMENT COMBINATION OF RADIOGRAPHIC TESTING USING LO-RAD AND CRT EQUIPMENT
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Figu! 1.0 " RT preparation ith Lo-Rad equipment
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DURING WORK
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4ame 4ame as 4afety 4afety =roced =rocedure ure requir required ed by by +,L +,L duri during ng conven conventio tional nal RT or/. or/.
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Refer Refer to Radiog Radiograp raphic hic Testin esting g proced procedure ure and and Com Comput puted ed Radio Radiogra graphi phicc Tes Testin ting g procedure..
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"nly "nly quali qualified fied RT technic technician ian allo alloed ed to to or/ or/ in in barric barricade aded d area. area. "utsid "utsidee barrica barricaded ded area is safe for non-radiation or/er.
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"nce "nce the the e&posu e&posure re comp complete lete77 the imag imaging ing plat platee ill ill slidin sliding g onto onto the the CRT CRT scan scanner ner to to transfer the image into CRT softare. 'ay choose the option either to maintain the image in imaging plate or erase it for re-use.
FIGURE 2.0 " 4liding imaging plate onto CRT scanner for image transfer to CRT softare.
METHOD STATEMENT COMBINATION OF RADIOGRAPHIC TESTING USING LO-RAD AND CRT EQUIPMENT
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AFTER WORK
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+ll +ll equi equipm pment ent shal shalll hous house/ e/ee eepi ping ng after after comp comple letio tion n of or/ or/..
