5. TECHNICAL SPECIFICATIONS SPECIFICATIONS
Technical Specification
TABLE OF CONTENTS Sr.#
Description
5.1.1
DESCRIPTION OF PROECT.......................................................................................
5.1. 5.1.1. 1.1 1 5.1. 5.1.1. 1.2 2 5.1.1.3 5.1. 5.1.1. 1.4 4 5.1. 5.1.1. 1.5 5 5.1. 5.1.1. 1.6 6 5.1. 5.1.1. 1. 5.1.1.# 5.1. 5.1.1 1.$ 5.1. 5.1.1. 1.$. $.1 1 5.1. 5.1.1. 1.$. $.2 2 5.1. 5.1.1. 1.$. $.3 3 5.1. 5.1.1. 1.$. $.3. 3.1 1 5.1. 5.1.1. 1.$. $.3. 3.2 2 5.1. 5.1.1. 1.$. $.3. 3.3 3 5.1. 5.1.1. 1.$. $.3. 3.4 4 5.1. 5.1.1. 1.$. $.3. 3.5 5 5.1. 5.1.1. 1.$. $.3. 3.6 6 5.1. 5.1.1. 1.$. $.3. 3. 5.1. 5.1.1. 1.1/ 1/ 5.1. 5.1.1. 1.1 11 5.1. 5.1.1. 1.12 12 5.1. 5.1.1. 1.13 13
April 10, 2017 2017
Page #
Loca Locati tion on.. ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ...... ...... ...... ...... ...... ...... ..... Gene Genera rall Desc Descri ript ptio ion. n... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ...... ... Climate 2 Hydr Hydrol olog ogy. y... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ..... .. Seis Seismi mici city. ty... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ...... ..... Rain Rainfa fallll Reco Record rd... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... ..... ..... !opogr pograp ap"y "y.. ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ...... ... Geology 4 %cce %ccess ss to Constr& str&ct ctio ion n Site Sites. s... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... %cce %ccess ss to 'o( 'o(er er"o "o&s &se e Sit Site e in Res" Res"& &n... n...... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... %cce %ccess ss to )nta )nta*e *e Str& Str&ct ct&r &res es Lats Lats"a "all Gol Gol.. ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ...... ...... ...... ...... ...... ...... ... Str& Str&ct ct&r &res es for for %cces ccess. s... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ..... Res" Res"&n &n Gol... Gol...... ....... ........ ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ........ .......... ........... ........... ......... ... S"a* S"a*o" o" Gol... Gol...... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ........ ....... ....... ....... ....... ......... ........... ........... ........... ........ .. Lats Lats"a "all Gol... Gol...... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ........ ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ........ ........... .......... .... Road Road +et( +et(ee een n Lats Lats"a "all , and and S"a* S"a*o" o" , Ri-er Ri-er Cross Crossin ing.. g..... ....... ....... ....... ....... ....... ....... ....... ......... ........... ......... ... Resp Respon onsi si+il +ility. ity.... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ......... .......... ........... .......... .... eas eas&r &rem emen ents ts.... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ........ ....... ....... ....... ....... ....... ....... ......... ..... 'aym 'aymen ent... t...... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ........ ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ......... ........ ... %-ai %-aila la+i +ilility ty of La+o La+o&r &r.. .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ...... ...... ...... ..... %-ai %-aila la+i +ilility ty of Con Constr& str&ct ctio ion n 0&i 0&ipm pmen ent.. t..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ...... ...... ...... ...... ...... ...... ... 0m+a 0m +ass ssie ies. s.... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ..... .. %nne %nne& &re res. s... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ...... ...... ...
TECH-SP5.W5 TECH-SP5.W511
Technical Specification
TABLE OF CONTENTS Sr.#
Description
5.1.1
DESCRIPTION OF PROECT.......................................................................................
5.1. 5.1.1. 1.1 1 5.1. 5.1.1. 1.2 2 5.1.1.3 5.1. 5.1.1. 1.4 4 5.1. 5.1.1. 1.5 5 5.1. 5.1.1. 1.6 6 5.1. 5.1.1. 1. 5.1.1.# 5.1. 5.1.1 1.$ 5.1. 5.1.1. 1.$. $.1 1 5.1. 5.1.1. 1.$. $.2 2 5.1. 5.1.1. 1.$. $.3 3 5.1. 5.1.1. 1.$. $.3. 3.1 1 5.1. 5.1.1. 1.$. $.3. 3.2 2 5.1. 5.1.1. 1.$. $.3. 3.3 3 5.1. 5.1.1. 1.$. $.3. 3.4 4 5.1. 5.1.1. 1.$. $.3. 3.5 5 5.1. 5.1.1. 1.$. $.3. 3.6 6 5.1. 5.1.1. 1.$. $.3. 3. 5.1. 5.1.1. 1.1/ 1/ 5.1. 5.1.1. 1.1 11 5.1. 5.1.1. 1.12 12 5.1. 5.1.1. 1.13 13
April 10, 2017 2017
Page #
Loca Locati tion on.. ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ...... ...... ...... ...... ...... ...... ..... Gene Genera rall Desc Descri ript ptio ion. n... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ...... ... Climate 2 Hydr Hydrol olog ogy. y... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ..... .. Seis Seismi mici city. ty... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ...... ..... Rain Rainfa fallll Reco Record rd... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... ..... ..... !opogr pograp ap"y "y.. ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ...... ... Geology 4 %cce %ccess ss to Constr& str&ct ctio ion n Site Sites. s... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... %cce %ccess ss to 'o( 'o(er er"o "o&s &se e Sit Site e in Res" Res"& &n... n...... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... %cce %ccess ss to )nta )nta*e *e Str& Str&ct ct&r &res es Lats Lats"a "all Gol Gol.. ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ...... ...... ...... ...... ...... ...... ... Str& Str&ct ct&r &res es for for %cces ccess. s... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ..... Res" Res"&n &n Gol... Gol...... ....... ........ ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ........ .......... ........... ........... ......... ... S"a* S"a*o" o" Gol... Gol...... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ........ ....... ....... ....... ....... ......... ........... ........... ........... ........ .. Lats Lats"a "all Gol... Gol...... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ........ ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ........ ........... .......... .... Road Road +et( +et(ee een n Lats Lats"a "all , and and S"a* S"a*o" o" , Ri-er Ri-er Cross Crossin ing.. g..... ....... ....... ....... ....... ....... ....... ....... ......... ........... ......... ... Resp Respon onsi si+il +ility. ity.... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ......... .......... ........... .......... .... eas eas&r &rem emen ents ts.... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ........ ....... ....... ....... ....... ....... ....... ......... ..... 'aym 'aymen ent... t...... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ........ ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ......... ........ ... %-ai %-aila la+i +ilility ty of La+o La+o&r &r.. .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ...... ...... ...... ..... %-ai %-aila la+i +ilility ty of Con Constr& str&ct ctio ion n 0&i 0&ipm pmen ent.. t..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ...... ...... ...... ...... ...... ...... ... 0m+a 0m +ass ssie ies. s.... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ..... .. %nne %nne& &re res. s... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ...... ...... ...
TECH-SP5.W5 TECH-SP5.W511
Technical Specification
TABLE OF CONTENTS Sr.#
Description
Page #
5.!
"ENERAL TE TECHNICAL SP SPECIFICATIONS...................................................................
5.2. 5.2.1 1 Descri script ptio ion n of ater ateria ials ls.. .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .. 5.2. 5.2.1. 1.1 1 at& at&re re of t"e t"e ate ateri rial als.. s.... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ...... ...... ..... 5.2.1.2 elding 1 5.2. 5.2.1. 1.3 3 0lec 0lectr trod odes es.. .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ...... ...... ...... ...... ...... ...... ... 5.2. 5.2.2 2 0ec 0ec& &tion tion.. .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... 5.2. 5.2.2 2.1 et" et"od of Con Constr& str&ct ctiion.. on.... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .. 5.2. 5.2.2. 2.2 2 %d& %d&st stme ment nt of Dist Distor orti tion ons. s... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... ..... ..... .. 5.2. 5.2.2. 2.3 3 Spec Specia iall 'art 'arts. s... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ...... ...... ..... 5.2.2.4 'aint 3 5.2.2.4.1 'ainting 3 5.2. 5.2.2. 2.5 5 Cont Contro rols ls and and !ests sts in act actor oryy , !olera leranc nces es .... ....... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ...... ...... ..... 5.2. 5.2.2. 2.5. 5.1 1 eta etallll&r &rgi gica call Cont Contro roll and and el eldi ding ng Cont Contro rol. l.... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ..... 5.2. 5.2.2. 2.5. 5.2 2 eld eldin ing g Cont Contro rol. l.... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .. 5.2. 5.2.2. 2.5. 5.3 3 Cont Contro roll of 0ter 0terio iorr %ppe %ppear aran ance ce... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... 5.2. 5.2.2. 2.5. 5.4 4 !olera leranc nce. e... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ...... ... 5.2. 5.2.2. 2.5. 5.5 5 Hydr Hydra& a&lilicc !est.. st.... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ..... .. 5.2. 5.2.2 2.6 !ranspo sportat rtatio ion n to Co Constr& str&ct ctio ion n Site Site and and 7&il 7&ildi ding ng.. .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .. 5.2. 5.2.2. 2.6. 6.1 1 Stor Storag age e and and ain ainte tena nanc nce. e... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... 5.2. 5.2.2. 2.6. 6.2 2 0rec 0recti ting ng 'rogr 'rogram am.. .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ...... ...... ...... ...... ...... ... 5.2. 5.2.2. 2.6. 6.3 3 )nte )nteri rior or Stre Stress ss.. .... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ...... ...... ...... ...... ...... ..... 5.2.2.6.4 8oining 5.2. 5.2.2. 2.6. 6.5 5 'ain 'aintt end endin ing. g... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ...... ...... ...... ...... ... 5.2. 5.2.2. 2.6. 6.6 6 Conc Concre rete te.. .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ... 5.2. 5.2.2. 2.6. 6. Clea Cleani ning ng.. ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... ..... ...... ...... ...... ... 5.2. 5.2.2. 2.6. 6.# # 0lec 0lectr tric ical al and and 'l&m 'l&m+i +ing ng )nst )nstal alla lati tion onss for for t"e t"e 0rec 0recti tion on... ..... .... ..... ..... .... ..... ..... ..... ...... ...... ...... ...... ...... ...... ...... ..... .. 5.2. 5.2.2 2. Contr ontrol ol and and te tests sts in t"e t"e (or* (or*in ing g site site.. .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... 5.2. 5.2.2. 2.. .1 1 eld eldin ing g mec mec"a "ani nica call test test.. .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ...... ...... ...... ...... ...... ...... ... 5.2. 5.2.2. 2.. .2 2 9erifyi rifying ng t"e t"e 0a 0act ctne ness ss of t"e t"e 0rec 0recti tion on.. .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ...... ...... ...... ...... ...... ... 5.2. 5.2.2. 2.. .3 3 Hydr Hydra& a&lilicc !est.. st.... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ..... .. 5.2. 5.2.2. 2.. .4 4 Cont Contro roll Cond Condit itio ions ns.. .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ...... ...... ... 5.2.3Comple 5.2.3Completion tion of t"e or*s and aintenan aintenance ce 'eriod.................................................... ............. ....... ............ ...... 5.2. 5.2.3. 3.1 1 Comm Commis issi sion onin ing. g.... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ..... .. 5.2. 5.2.3. 3.2 2 Defi Defini nite te Rece Recept ptio ion. n... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ...... ...... ...... ..... 5.2. 5.2.3. 3.3 3 Ree Reect ctio ion. n... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ...... ...... ...... ...... ...... ..... 5.2. 5.2.3 3.4 Speci pecial al Case Case of of 'ain 'aints ts G&a G&ara rant nty. y... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... ..
April 10, 2017 2017
TECH-SP5.W5 TECH-SP5.W511
Technical Specification
TABLE OF CONTENTS Sr.#
Description
5.
PARTIC$LAR TECHNICAL SPECIFICATION................................................................
5.3.1 5.3.1.1 5.3.1.2 5.3.1.3 5.3.2 5.3.2.1 5.3.2.1.1 5.3.2.1.2 5.3.2.2 5.3.2.3 5.3.2.3.1 5.3.2.3.2 5.3.2.3.3 5.3.2.3.4 5.3.2.3.5 5.2.4
April 10, 2017
Page #
S&pply of aterial.................................................................................................. '"ysical Re&irements........................................................................................... C"emical Composition........................................................................................... Re&ired !ests and :&ality Certificates.................................................................. an&fact&re of t"e 'enstoc*.................................................................................. 'rod&ction in actory............................................................................................. 'ipes 2 Distri+&tion 'ipe..................................................................................................... !esting in actory................................................................................................... elding ;n Site..................................................................................................... elds ("ic" can +e made on Site.......................................................................... elding 0&ipment................................................................................................ :&alification of elders......................................................................................... elding 'roced&re................................................................................................. !esting and Repair elding.................................................................................... !ec"nical !a+les for t"e 'enstoc*...........................................................................
TECH-SP5.W51
Technical Specification
5 TECHNICAL SPECIFICATION
5.1.1
DESCRIPTION OF PROECT 5.1.1.1
Location
!"e site is located on t"e rig"t +an* of Res"&n Cree* 2.5 *m from t"e -illage of Res"&n sit&ated 52 *m on t"e main road from C"itral !o(n to(ards ast& and S"and&r 'ass at an altit&de of 2/// m a.s.l. )t is located at appro. 36 o nort" and 2o east in C"itral District ort",est rontier 'ro-ince of 'a*istan. Location maps of Res"&n and 'roect %rea and %ccess are at %nne&res. C"itral is connected to 'es"a(ar -ia Lo(ari 'ass and Dir. !ransportation +et(een 'es"a(ar and C"itral !o(n is possi+le +y +&ses and tr&c*s on a mo&ntaino&s road partly asp"alted. D&e to t"e "ig" altit&de of t"e lo(ari 'ass <32// m a.s.l.= t"e road is closed to traffic d&e to sno(fall in (inter and t"e district remains isolated for se-eral mont"s <o-em+er>Decem+er to ay=. D&ring t"is period? it is not possi+le to tra-el or transport goods +y road from 'es"a(ar to C"itral@ -ia 'a*istan Roads? t"ro&g" t"e road from C"itral to 'roect area (o&ld +e open to traffic all year aro&nd. !"ere is a possi+ility -ia %fg"anistan ("ic" may +e &sed +y t"e Contractor. 7&ses from 'es"a(ar reac" C"itral !o(n <36/ *ms= -ia Dir and Lo(ari 'ass in a+o&t 15 "o&rs <12 "o&rs +y fo&r ("eel dri-en passenger car=. rom C"itral !o(n on(ard t"e only means of transportation is +y a tr&c*a+le all (eat"er road. %s regards comm&nication ser-ices? C"itral "as 'ostal ser-ices? !elep"one and a recei-ing !9 7ooster for C"itral !o(n. )t is possi+le to comm&nicate from se-eral places (it"in C"itral District +&t t"ey are not as good as to +e desired. C"itral !o(n <("ic" is a+o&t 52 *ms from t"e site= is pro-ided (it" direct dialing telep"one to t"e rest of 'a*istan. C"itral !o(n "as a small airport allo(ing smaller planes to fly from 'es"a(ar. !"ere is a reg&lar o**er ser-ice +y t"e 'a*istan )nternational %irlines +et(een 'es"a(ar and Said& S"arif and C"itral s&+ect to &npredicta+le (eat"er conditions. !"is "appens &ite fre&ently ("en flig"ts are delayed or cancelled. 'es"a(ar ("ic" is t"e capital of ..'.. is connected to Aarac"i +y all (eat"er +road gage Rail(ay and Hig"(ay. !"e distance from Aarac"i to 'es"a(ar is 14// *ms +y road. ollo(ing are t"e limitation for o-ersiBe consignments +y Rail(ay from Aarac"i to 'es"a(ar. 1. 2.
;-erall lengt" of consignment %ppro. (eig"t
#23
cm 2/ tons
!"ere is no electricity at t"e proect site. C"itral !o(n "as domestic s&pply of 22/ -? 5/HB? +&t it is not dependa+le. !"e standard domestic s&pply of electricity in 'a*istan is 22/- 5/HB.
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Technical Specification
5.1.1.!
"enera% Description
!"e Res"&n Hydropo(er 'roect "as +een planned &sing t"e (aters of t"e Res"&n Cree*
!&nnel for penstoc*
3.
'o(er Station and )nta*e Str&ct&res etc.
4.'enstoc* and Distri+&tion 'ipe
Steel or*s
6.
S(itc"gear and !ransformers <0F,2=
.
!ransmission and Distri+&tion system <33>/.4 *9=
#.
Distri+&tion system
!"e present Contract is for constr&ction of Steel,1 5.1.1.
C%i&ate
!emperat&re conditions near t"e (ater inta*e and po(er "o&se site can +e estimated from t"e ta+les in t"e %nne? ("ic" are comp&ted from temperat&re models deri-ed from "ig" altit&de climatic stations &pto %fg"anistan and Aas"mir. Despite t"e lo( temperat&res from o-em+er to arc"? t"e area (ill +e accessi+le in general for most of t"e year? ecept a fe( days after "ea-y sno(fall. 7&t sno(fall normally is (ea* at altit&des +elo( 25// m in t"is region. Sno(fall? "o(e-er? is -ery important in t"e mo&ntains of t"e so&t"ern part of t"e C"itral region. So? a-alanc"e danger is serio&s in t"e Lo(ari pass region and t"ere is no c"ance to *eep open t"is only access road to C"itral -alley d&ring (inter e-en (it" modern road cleaning e&ipment. D&e to t"e climatic conditions? t"e proect area (ill
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Technical Specification
"a-e limited access d&ring (inter? at least for t"ree mont"s d&ring Decem+er? 8an&ary? and e+r&ary? and t"e Contractor s"o&ld inspect t"e site and satisfy "imself a+o&t t"e climate and access conditions +efore tendering and preparing "is constr&ction sc"ed&le. !emperat&re records are s"o(n at %nne&res. 5.1.1.'
H()ro%og(
Res"&n Gol at t"e inta*e area "as a total catc"ment area of a+o&t 1/2 s. *m. !"e inta*e area is located at t"e confl&ence of Lats"al Gol and S"a*o" Gol. inim&m r&n,off estimation for Res"&n Gol (as done in t"e 'reliminary Report on Climatology and Hydrology. !"e comp&tation (as one mainly on t"e dates from t"e "ydrograp" C"itral and flo( d&ration c&r-e of C"itral,Ri-er. ;&t of t"e a-aila+le data a mean "ydrograp" and flo( d&ration c&r-e (as comp&teriBed for Res"&n Gol. See %nne&res. %dditional disc"arge meas&rements (it" a c&rrent meter (ere done d&ring lo( disc"arge in Res"&n Gol d&ring (inter seasons 1$#,$1. D&e to t"ese meas&rements? it (as fo&nd t"at t"e specific mean minim&m disc"arge -al&es of mean "ydrograp" are too m&c" on t"e safe side. !"e morp"ometric conditions in t"e catc"ment area of Res"&n Gol are m&c" +etter t"an epected +efore. So it (as decided to fi t"e mean minim&m disc"arge at #/ l>s. or a pea* load operated plant t"e design disc"arge can +e fied &pto 1.35/ l>s. D&e to ot"er reasons t"e design disc"arge is finally fied at 1.62/ l>s. !o determine "ig" flood? t(o types of floods "a-e +een considered. 1.
!"e "&ndred year flood as D)0S);)G L;;D 15/ m 3>s for eac" inta*e? S"a*o" Gol and Lats"al Gol.
2.
!"e ann&al flood disc"arge d&ring constr&ction is estimated as 2/ m 3>s for eac" inta*e? S"a*o" Gol and Lats"al Gol. 5.1.1.5
Seis&icit(
%ccording to t"e 'reliminary Seismotectonic ap of 'a*istan <1$$= t"e area from t"e ast& and C"itral Ri-ers to 'ans"ir Ri-er in %fg"anistan is one of t"e maor eart"&a*e Bones of 'a*istan ("ere eart"&a*es &pto a magnit&de of m, (ere o+ser-ed. C"itral District is called an epicentral tract of maor eart"&a*es? serio&s damages to +&ildings. !"e A"y+er a< Ione in t"e so&t"ern at moderate to "ig" le-el part of t"e proect area as (ell as t"e 'amir , Aara*or&m Region are said to "a-e seismic acti-ity at moderate to "ig" le-el. See Ione map of Seismicity at %nne&res. %s t"e Res"&n a< also +elongs to t"e acti-e fa<s it is recommended to calc&late all design loads (it" a "oriBontal eart"&a*e accelerationE
of /.2 g for@
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, , , ,
penstoc* distri+&tion pipe po(er "o&se con-ersion pipe
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Technical Specification
of /.1 g forE
5.1.1.*
, , ,
)nta*e Str&ct&re S"a*o" Gol )nta*e Str&ct&re Lats"al Gol Reser-oir
Rain+a%% Recor)
!"e preliminary report of climatology and "ydrology prepared for Small Hydropo(er De-elopment in ' s"o(s a mean ann&al regional precipitation in C"itral -alley of a+o&t 1/// mm. See %nne&res. 5.1.1.,
Topograp-(
!"e topograp"y is of "ig" mo&ntain ranges &pto // m a.s.l. (it" deep ri-er -alleys and side streams in steep and narro( gorges. 5.1.1.
"eo%og(
!"e region is sit&ated in a se&ence of metamorp"ic roc*s consisting of s"ales? slates? sc"ists? green stones? p"yllites? mar+les? dolomites? sandstone and &artBites dominated +y intr&sion of !iric" ir Granite. See %nne&res. !"e general geology of t"e proect area is &ite complicated as according to C%LA)S t(o regional t"r&st fa<s p&s"ed yo&nger roc*s on top of older ones. !"e Res"&n a< t"r&sts Res"&n ormation
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Technical Specification
4.!"e con-ersion pipe to t"e Lats"al Gol "as to +e ro&ted t"ro&g" t"ic* all&-ial deposits +et(een t"e ri-ers? consisting of gra-el? pe++les? sand? and silt. )t is anticipated t"at eca-ation
Access to Constr0ction Sites
5.1.1./.1
Access to Poer-o0se Site in Res-0n
rom t"e C"itral,7ooni Road a tr&c*a+le road (as constr&cted +y CF Dept. !"is Road crosses Res"&n Gol t"ree times +y +ridges (it" a pay load of 1/ tons. !"is road is ne( and can +e &sed o-er t"e ("ole year. eit"er land slides nor a-alanc"es can +loc* t"is road. ;nly &nepected "ig" floods can interr&pt t"e smoot" approac" for a s"ort ("ile. 5.1.1./.!
Access to Inta2e Str0ct0res Lats-a% "o%
)t is planned to pro-ide access for transport of materials li*e cement? e&ipment
Transport ( 60%es7 Don2e(s or 6en
!"ere is a foot pat" from t"e po(er "o&se site
trip. 34Transport ( Ca%e 8a(
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Technical Specification
!o a-oid t"e steep portions of t"e footpat" t"e Contractor can install a ca+le (ay o-er t"e ("ole lengt" from t"e po(er "o&se area &pto t"e confl&ence of +ot" ri-ers. !"e total lengt" of s&c" a ca+le (ay (ill +e appro. 1.6// m. !"e transport to t"e starting point at t"e po(er"o&se area can +e done +y tr&c*. rom t"e end point of t"e ca+le (ay t"e distri+&tion of material can +e done +y m&les? don*eys? ("eel +arro(s or men. )f t"e capacity of t"e ca+le (ay is "ig"? d&mpers disasmantled can +e +ro&g"t &p t"e inta*e area? ("ic" (ill speed &p t"e progress. 3c4
Co&ination Ca%e 8a(960%es7 Don2e(s or 6en
!o red&ce t"e lengt" of t"e ca+le (ay it is possi+le to install only o-er t"e steep portions of t"e pat" a ca+le (ay. !"e lengt" of s&c" a ca+le (ay is estimated +et(een 72 and 74 to +e appro. 32/ m. !o ma*e a more comforta+le transport connection it is recommended to start (it" t"e ca+le (ay from t"e po(er "o&se area so t"at t"e lengt" (ill +e appro. // m. )f t"e capacity of t"e ca+le (ay? starting from t"e po(er "o&se area? is "ig"? dismantled d&mpers can +e +ro&g"t to t"e area of 74. )f t"e pat" +et(een 74 and 7 is impro-ed <(idening= and t"e inclination is red&ced in some portions? t"e operation of d&mpers is possi+le. 3)4
He%icopter
!"is is a sol&tion in com+ination (it"
Bri)ge or Ca%e 8a( +ro& A)it A!
%s t"e %dit 2 of t"e t&nnel for penstoc* is opened? t"e Contractor (ill "a-e t(o optionsE ,Constr&ction of a eepa+le +ridge from t"e %dit 2 crossing Res"&n Gol eep or partly dismantled -e"icle can +e lifted. 5.1.1./.
Str0ct0res +or Access
5.1.1./..1 Res-0n "o%
or t"e smoot" transport accomplis"ed +y t"e met"ods s&ggested a+o-e? it is necessary to "a-e a ri-er crossing of Res"&n Gol in t"e area of t"e po(er "o&se. !"is can +e done +y a lig"t temporary +ridge carrying a load of appro. 3// *g.
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Technical Specification
;r a temporary ca&se (ay (it" proper ramps on eac" ri-er +an* s"o&ld +e constr&cted? ta*ing "ig"er (ater le-els d&ring spring and s&mmer time &nder consideration. 5.1.1./..! S-a2o- "o%
!"e eisting foot+ridge o-er S"a*o" Gol is normally (as"ed a(ay once or t(ice a year d&ring "ig" flood le-el. or t"e operation of t"e "ydropo(er plant in partic&lar a ri-er crossing is not necessary at t"e inta*e str&ct&re of S"a*o" Gol. Ho(e-er? t"ere (ill +e some infl&ence +y t"e constr&ction of t"e sand trap and SHD; (ill +e interested in a permanent +ridge crossing t"e S"a*o" Gol at t"e end of t"e sand trap. !"is +ridge can +e constr&cted only after completion of t"e inta*e str&ct&res S"a*o" Gol. !"e Contractor "as to constr&ct "is o(n temporary ri-er crossing at t"is place. !"is ri-er crossing incl&des a proper ramp at t"e rig"t ri-er +an* of S"a*o" Gol. !"e ramp at t"e left ri-er +an* needs etension only d&e to t"e comforta+le slope. 5.1.1./.. Lats-a% "o%
!"e crossing of Lats"al Gol is part of t"is Contract. Since it is not decided ("ic" portion of access t"e Contractor (ill select? t"e mode of ri-er crossing is open. !"ere are t(o possi+ilitiesE 3a4
Bri)ge
S&c" a +ridge m&st +ear a load of 3 tons to t"e transportation of con-ersion pipes. or t"e operation of t"e "ydropo(er plant? only a foot +ridge is re&ired. 34
Foot ri)ge an) Ca0sea(
)f a foot+ridge is constr&cted only a ca&se(ay for "ea-y e&ipment m&st +e foreseen. !"e ca&se(ay can +e +&ilt as a temporary constr&ction. !"e location of t"e ri-er crossing at Lats"al Gol s"all +e &pstream of t"e crossing of t"e con-ersion pipe. 5.1.1./..' Roa) eteen Lats-a% : an) S-a2o- : Ri;er Crossing
!"e connection +et(een +ot" ri-er crossings "as to follo( t"e alignment of t"e con-ersion pipe. !"e eca-ation of t"e ro&te of t"e f&t&re con-ersion pipe is part of t"is Contract. !"e ro&te of t"e con-ersion pipe can +e &sed as a temporary road? connecting +ot" ri-er crossings. 5.1.1./..5 Responsii%it(
!"e Contractor s"all +e responsi+le for maintaining all access meas&res in good condition and for *eeping all (or* sites in good repair at all times. 5.1.1./..* 6eas0re&ents
o meas&rements (ill +e made for access facilities pro-ided +y t"e Contractor. )tem 5.1.1.$.3.4
'ayment (ill +e made only for item 5.1.1.$.3.3
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Technical Specification
5.1.1.1<
A;ai%ai%it( o+ Lao0r
Jns*illed la+o&r is locally a-aila+le. Some s*illed la+o&r "as to +e "ired from ot"er parts of 'a*istan (it" 'es"a(ar at t"e nearest. 'a*istan "as a large potential of all categories of s*illed and "ig"ly s*illed artisans in -ario&s trades and disciplines and s&per-isory personnel for -ario&s fields of constr&ction. 5.1.1.11
A;ai%ai%it( o+ Constr0ction E=0ip&ent
o constr&ction e&ipment is a-aila+le locally +&t some e&ipment can +e ac&ired from ot"er parts of 'a*istan. 5.1.1.1!
E&assies
!"e 0m+assies are located in )slama+ad? t"e capital of t"e )slamic Rep&+lic of 'a*istan? ("ic" is a+o&t 55/ *m from t"e proect area <16/ *m from 'es"a(ar=. 5.1.1.1
Anne>0res
Location ap Res"&n
%nne. 2'roect %rea and %ccess %nne. 3;-erall 9ie( of Res"&n Hydro 'o(er Sc"eme %nne. 4General Geological Conditions of t"e 'roect %rea %nne. 5lo( D&ration C&r-e? ean Daily R&n ;ff Res"&n Gol +elo( S"a*o" Gol %nne. 6ean Daily min>ma !emperat&re at Different %ltit&des %nne. ean %nn&al 'recipitation in C"itral 9alley
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5.! "ENERAL TECHNICAL SPECIFICATIONS
Technical Specification
5.!
"ENERAL TECHNICAL SPECIFICATIONS
STANDARDS AND TECHNICAL RE"$LATIONS APPLICABLE TO THE 6AN$FACT$RE AND INSTALLATION OF PENSTOC? : Intro)0ction
!"e p&rpose of t"e present doc&ments is to define t"e principal tec"nical c"aracteristics and re&irements ("ic" m&st +e met +y t"e elements of t"e penstoc* and t"e metal str&ct&res for "ydra&lic (or*s re&ested +y t"e 0mployer. : Scope o+ s0pp%(
!"e s&pply co-ers all t"e elements necessary for a normal and correct f&nction of t"e penstoc* and metal str&ct&res to +e &sed in t"e constr&ction of "ydroelectric generating plants. %ny deficiency or non,compati+ility of t"e present specifications? conditions and description s"o&ld +e form&lated in (ritten form as specified in )nstr&ctions to !enderers
Nat0re o+ t-e 6ateria%s
!"e materials &sed s"o&ld +e ne( and m&st satisfy t"e specifications of t"e %merican )nstit&te of Steel Constr&ction or t"e ational specifications corresponding in t"e case of materials of ational origin. %ll steel s"o&ld come from a rep&ta+le steel mill. )f necessary? an <rasonic area test may +e ordered. !ests m&st in all cases +e carried o&t +y independent la+oratories as stip&lated in D) 5//4$? 'art 3? not +y t"e steel mill. )n case t"e materials &sed are not made of steel? t"e +idder (ill -erify t"e properties of t"e material to +e &sed s&c" t"at good performance of t"e penstoc* (ill +e g&aranteed. 0-ent&al eceptions to t"ese specifications can +e accepted (it" t"e pro-iso t"at t"e type of materials (ill +e of a &ality at least e&i-alent and t"at t"e 0ngineer (ill +e in agreement (it" t"eir &se. 5.!.1.!
8e%)ing
'ipes are constr&cted normally from "ot or cold rolled plates according to t"eir ga&ge@ t"e +ent plates may "a-e one or more longit&dinal (elds according to t"eir diameter. !"e type of (elding (ill depend on t"e man&fact&rerMs facilities? ie a&tomatic? semi,a&tomatic? or man&al. !"e Contractor (ill adopt "is &s&al standards for t"e siBe of +e-els? t"e plate separation at t"e +eginning of t"e (elding? t"e ga&ge of t"e +eads and t"eir form? t"e flo( intensity? etc. as (ell as t"e (ay t"e (eld are made? man&ally or mac"ine,made? contin&o&s met"od or m<iple +eads.
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Technical Specification
!"ese standards s"o&ld +e presented for appro-al of t"e 0ngineer? t"o&g" t"eir acceptance does not in any (ay relie-e t"e man&fact&rer of "is responsi+ilities regarding &ality and g&arantee. !"e (eldings (ill +e made in accordance (it" t"e tec"nical r&les of (elding ta*ing all acc&stomed preca&tions? especially for t"e 'G,021 or %210 steels. elding s"ell +e done only +y eperienced? &alified and certified personnel. !"e type of eac" (eld is s"o(n on t"e (or*s"op dra(ings. )f t"e diameter permits? (elding (ill +e done from +ot" inside and o&tside of t"e pipe. or (elding of t"e penstoc*? no stress relie-ing proced&re is re&ired. Ho(e-er? (elds (ill +e -erified +y N,ray and>or <rasonic testing. Cons&ma+le electrodes as specified or t"eir e&i-alent m&st +e &sed. !"e (elding of +if&rcation pipes is more critical d&e to t"e comple stress conditions t"e pipe (ill "a-e to resist. !"erefore? stress relie-ing preca&tions (it" a s&ita+le o-en
E%ectro)es
!"e Contractor (ill +e responsi+le for selection of t"e electrodes@ pro-ided of co&rse t"at t"e c"aracteristics of t"e material of t"e penstoc* are matc"ed. Cons&ma+le electrodes "a-e to +e *ept dry and (arm in special containers +efore &se if t"ey co&ld get "&mid on site. 5.!.! E>ec0tion 5.!.!.1
6et-o) o+ Constr0ction
)n general? eec&tion of all t"e parts of t"e s&pply s"o&ld +e carried o&t (it" etreme care? not only regarding t"e fine &ality and good ad&stment of t"e parts? +&t also t"e finis"ing and eternal appearance. 5.!.!.!
A)@0st&ent o+ Distortions
!"e ad&stment of distortions s"o&ld +e made in t"e cold? ie (it" ac*s@ t"e &se of +lo(torc" is not permitted. 5.!.!.
Specia% Parts
%s a matter of principle t"e special parts s&c" as +ends? distri+&tion pipes? and man"oles? etc. (ill +e made? constr&cted and c"ec*ed to ins&re t"ey (it"stand all "ydra&lic tests in t"e (or*s"op.
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Technical Specification
!"ey (ill +e designed and man&fact&red s&c" t"at no air poc*ets are prod&ced and t"e "ead losses are red&ced to a minim&m. !"e +ends partic&larly s"o&ld "a-e an a-erage radi&s greater t"an t(o and "alf times t"eir diameter. !"e flanges? s"o&ld +e rolled (it"o&t (elding@ t"ey (ill +e treated as (elded pipe of t"e same *ind. !"e elements t"at can +e replaced or re-ised? s&c" as remo-a+le +ent plates? man"oles? etc. s"o&ld +e easily accessi+le and easy to dismantle (it"o&t dist&r+ing t"e adacent elements. 5.!.!.'
Paint
!"e metal parts pro-ided +y t"e man&fact&rer s"o&ld +e totally protected against corrosion. %ll steel parts s"o&ld +e cleaned from r&st &ntil a metal s"ine is o+tained in accordance (it" t"e p&rity grade of Sa3 Standard? according to D) 55#5# ac"ie-ed +y sand+lasting in according (it" D) 55$2# 'art 4. %t t"e ends m 2= 4/
Om
or eac" finis"ing coat m 2=
12/ Om
5.!.!.'.1 Painting I.
Pri&ing Coats
2 priming coats +ased on artificial resin compo&nds
Finis-ing Coats
3 finis"ing coats +ased on epoy resin and tar <+i,component tar,epoy com+ination as per )ntertol , 'oitar or similar=. 5.!.!.5
Contro%s an) Tests in Factor( : To%erances
5.!.!.5.1
6eta%%0rgica% Contro% an) 8e%)ing Contro%
!"e metall&rgical controls and t"ose of (elding? +ot" at t"e (or*s"ops and t"e constr&ction site? (ill +e to t"e ContractorMs acco&nt? according to t"e ational reg&lations or? alternati-ely? according to t"e %merican )nstit&te of Steel Constr&ction %)SC specifications.
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5.!.!.5.! a4
8e%)ing Contro%
6ec-anica% tests o+ e%)ing
rom a s&rpl&s section of pipe? t"e follo(ing test pieces (ill +e c&tE ,% test piece of traction (it" (elding approimately in t"e center part of t"e lengt". !"e resistance to traction of t"e (elding s"o&ld +e at least t"e same as t"e resistance of t"e plate. ,!(o test pieces of +ending (it" (elding in t"e center of t"e lengt". !"ese test pieces m&st resist t"e +ending in cold on a similar diameter e&al to t"ree times t"e t"ic*ness of t"e plate (it"o&t +rea*ing. ,!(o test pieces of resilience c&t in t"e (elding. !"e a-erage resilience of t"ese t(o test pieces s"o&ld +e at least $/ of t"e resilience of t"e plate. !"ese fi-e tests (ill +e made t"ree times@ t"e first? prior to starting (it" constr&ction of t"e pipe for control of t"e electrode &ality and t"e appro-al of t"e (elders@ and later on in t"e co&rse of man&fact&re in t"e (or*s"op (it" t(o different offc&ts of pipe. %n addition set of fi-e tests (ill +e re&ired eac" time t"e Contractor c"anges t"e (elder or t"e &ality of t"e electrodes. 4
Contro% o+ t-e e%)ing
)n penstoc*s for a gross "ead of more t"an 5// m? (elding s"o&ld +e s&+ected to a non destr&cti-e test of t"e materials +y N,rays or Jltraso&nd. !"e control proced&res (ill +e cond&cted +y a (ell,*no(n instit&tion for t"is type of tests. 5.!.!.5.
Contro% o+ E>terior Appearance
!"e pipe s"o&ld +e so&nd? ie? it s"o&ld not present groo-es? folds in t"e materials? &nfolding or ot"er defects ("ic" "arm t"e solidity? t"e employment and good maintenance in partic&lar of t"e areas (elded s"o&ld +e of &niform t"ic*ness (it" neit"er porosity nor +&rns? slag nor scale? fiss&re nor any ot"er defect. %ll e-ent&al s&perficial defects in t"e plates as in t"e (elding (ill +e s&ppressed or lessened after agreeing (it" t"e 0ngineer on t"e +est (ay for t"e defects to +e repaired. !"e &se of a +lo(torc" is epressly pro"i+ited for t"ese rectifications. 5.!.!.5.'
To%erance
'ipeE ,'late t"ic*ness ,2 5 ,%-erage diameters? -erified +y meas&rement of t"e perip"ery P /.3 ,!"e difference +et(een t"e greatest and least interior diameter of one section (it" respect to t"e a-erage diameter for t"at section /.5 ,!"e interior or eternal deflection of t"e finis"ed pipe / to 2 ,S*e(s of t"e faces (it" mec"anical finis"es and angle of t"e el+o( element P 2/ mm ,!"e ellipticity of t"e ends of +ent plates or pipes /.//1 D ,!"e difference +et(een t"e circ&mferential de-elopment of t(o ends to +e co&pled /.//2 D
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Technical Specification
langesE , ,
'erforation diameter /....1 mm !"ic*ness of perforation /....2 mm
, , ,
8ointsE 'ipe cap diameter /....1 mm Spigot end diameter 1..../ mm Dimensions of t"e seat of t"e r&++er oints /..../?5 mm
5.!.!.5.5
H()ra0%ic Test
;nly t"e co&pling and t"e +ranc"es (ill +e tested +y t"e Contractor according to "is &s&al met"ods &nder a test press&re e&al to at least 1.6 times t"e maim&m press&re in normal ser-ice. !"e test (ill +e done as follo(sE ,'ress&re (ill +e increased progressi-ely &p to t"e test press&re and after(ards ret&rned to t"e maim&m normal ser-ice press&re to permit t"e "ammering of t"e (elded lines. !"en t"e test press&re (ill +e increased again and maintained for 5 min&tes for t"e plate pieces and 3/ min&tes for t"e cast steel pieces. D&ring t"is test? t"e pipes s"o&ld e"i+it no impermea+ility defects. )f noises are "eard d&ring t"e test s&c" as crac*lings or m&ffled detonations? t"e section concerned s"o&ld +e s&+ected immediately after(ards to a caref&l interior inspection to ma*e t"e necessary ad&stments. )f t"e tests re-eal defects s&c" as "oles? groo-es? &n(elded parts? porosity? lea*age? lac* of resistance? etc. t"e pipes can +e repaired (it" electric (elding and s"o&ld t"en +e s&+ected to a ne( "ydra&lic test. %ny pipes ("ic"? on compresion "a-e not +een a+le to (it"stand satisfactorily t"e "ydra&lic test (ill +e reected. !"is test can +e made e-ent&ally after t"e installation. 5.!.!.*
Transportation to Constr0ction Site an) B0i%)ing
5.!.!.*.1
Storage an) 6aintenance
!"e arrangement of t"e land and t"e necessary materials for disc"arge and (are"o&sing of s&pplies (ill +e entirely t"e responsi+ility of t"e constr&ctor.
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5
Technical Specification
!"e constr&ctor (ill pro-ide and install all material and e&ipment necessary for maintenance +et(een places of storage and installation at site? t"at is? "a&ling mac"ines? le-erage mac"ines? (agons? anc"orage accessories? as (ell as access roads and -ario&s re&irements. !"ese installations (ill +e according to dra(ings ("ic" (ill +e s&+mitted for appro-al +y t"e 0ngineer. %ll t"e pre-io&sly stated materials are t"e property of t"e 0mployer (it" t"e eception of t"e elements encased in concrete. "en t"e (or* is completed? t"e Contractor (ill ens&re t"e total collection of "is material and e&ipment and ma*e good any dist&r+ed installations. 'ipes m&st +e "andled (it" care? t"ey m&st not +e dropped off t"e -e"icle from any "eig"t? t"ey m&st +e lifted or rolled. )n t"e e-ent t"e corrosion protection +ecomes damaged it m&st +e immediately repaired. 'ipes of smaller (all t"ic*ness m&st +e stored or transported a+o-e t"ose of t"ic*er (all t"ic*ness. 5.!.!.*.!
Erecting Progra&
!"e Contractor (ill present for appro-al of t"e 0ngineer? at t"e latest t"ree mont"s +efore erection starts at t"e (or*s? all doc&ments? dra(ings? diagrams and notes regarding t"e installations and erection material. %fter appro-al? and t(o mont"s +efore starting erection "e (ill send to t"e 0ngineer a detailed sc"ed&le for t"e erection ("ic" (ill fi for eac" n&m+ered pipe t"e dates foreseen forE , , , ,
arri-al at site setting in place and (elding of t"e pipes one to t"e ot"er t"e (or* (it" concrete and gro&ting.
!"e sc"ed&le (ill +e esta+lis"ed in agreement (it" t"e 0ngineer? and also (it"E , t"e Ci-il 0ngineer Contractor@ ,t"e s&ppliers of materials to ("ic" co&pling s"a-e to +e made at t"e limits of s&pply@ , t"e person or company ("o (ill apply t"e protection lining? ena+ling t"e maim&m speed in t"e ad-ance of t"e installation. 5.!.!.*.
Interior Stress
!"e pipes s"all +e con-eniently layed d&ring all operations of transportation? storage? maintenance and placing +y means of appropriate tie rods to pre-ent deformations. %ll piping (ill +e? ("en necessary? reinforced +y means of internal non,mo-ea+le internal +racing d&ring concreting and gro&ting. %fter placement? t"e pipe (ill +e c"ec*ed for ellipticity. 5.!.!.*.' oining
!"e piping (ill +e oined on site? and s&c" as to ins&re t"e impermea+ility and safety +y means of (elding from end to end (it" electric arc or fied or mo-a+le flanges.
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TECH-SP5.W51
Technical Specification
%ll (elding carried o&t? ("et"er in t"e s"op or on site? s"o&ld +e caref&lly polis"ed (it" emery +ot" inside and o&t? so t"at t"ere is no ro&g"ness ("ic" mig"t impair t"e good maintenance of t"e lining or increase energy losses. 5.!.!.*.5
Paint 6en)ing
"en installation "as +een completed t"e &npainted parts s"o&ld +e cleaned do(n to t"e +are metal <(elded oints=. !o&c"ing &p and o-erlapping (ill +e t"en made to restore t"e contin&ity of t"e paint coats +ot" inside and o&t. 5.!.!.*.* Concrete
%fter gro&ting +et(een concrete and roc*? concrete and plate? t"e Contractor (ill place +lan*ing pl&gs in t"e gro&ting "oles and? after ens&ring t"eir impermea+ility? place a (elding +ead +et(een t"e pipe co&plings and pl&gs. !"e Contractor m&st li*e(ise ma*e and seal t"e "oles of s&pplementary o&tlet for e-ent&al pro-isional drainage pipes? ("ic" mig"t +e deemed necessary. 5.!.!.*., C%eaning
!"e Contractor s"o&ld generally ens&re t"at t"oro&g" cleanness is o+ser-ed t"ro&g"o&t? +ot" d&ring and after installation. 5.!.!.*.
E%ectrica% an) P%0&ing Insta%%ations +or t-e Erection
!"e Contractor (ill +e responsi+le for all electrical and pl&m+ing installations re&ired on site@ as (ell as t"e d(ellings for personnel employed for installation. 5.!.!.,
Contro% an) Tests in t-e 8or2ing Site
5.!.!.,.1
8e%)ing 6ec-anica% Test
0ac" of t"e (elders employed for field (elding (ill +e re&ired to prepare from scraps of plates &sed for man&fact&re of t"e pipe? t(o <2= test pieces for traction? t(o <2= for +ending and t(o <2= for resilience? according to t"e indications of t"e 0ngineer and in t"e presence of "is representati-e. !"e pieces of plate for t"ese test pieces (ill +e placed s&c" t"at t"e (elding diffic<y (ill +e e&i-alent to t"e most diffic< eec&tion at site. 5.!.!.,.!
eri+(ing t-e E>actness o+ t-e Erection
% symmetrical and precise control (ill +e made of alignment and oints in t"e follo(ing conditionsE !"e tr&e position of t"e center of gra-ity of eac" end of pipe s"o&ld present? relati-e to t"e longit&dinal t"eoretical ais? a de-iation no greater t"an 1/ mm. %t t"e same time t"e tolerance of t"e clearance of (elding +e-el s"o&ld not eceed 5 mm.
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Technical Specification
5.!.!.,.
H()ra0%ic Test
;nce installation is completed and finis"es made t"e Contractor (ill proceed (it" t"e "ydra&lic tests. !"ese tests (ill incl&de t"e press&re testing of t"e pipe (it" maim&m (or*ing press&re as indicted in t"e 'artic&lar !ec"nical Specifications. )mpermea+ility (ill +e ass&red at t"e +ase of t"e pipe t"ro&g" t&r+ine protection -al-es? p&mps if glo+e -al-es are in-ol-ed? or t"ro&g" sp"erical pl&gs <("ic" (ill +e f&rnis"ed +y t"e Contractor= if anot"er -al-e type is &sed. !"e sealing of t"e &pstream part (ill +e made +y a pl&g (it" "oles for filling? -enting and press&re ga&ge inta*e? f&rnis"ed +y t"e Contractor? or +y means of t"e closed "ead gate? if s&c" "as +een foreseen for t"is p&rpose. ;nce t"e pipe is completed filled? t"e press&re (ill +e +&ilt &p comprisingE 1. !"e s&pplementary press&re to reac" t"e maim&m static load@ 2. !"e ecess press&re foreseen additional to t"is static load. !"en t"e maim&m (or*ing press&re is reac"ed in t"e lo(er part of t"e pipe. )f t"e o-erpress&re &niformly applied leads? for t"e &pper part? to eceed t"e maim&m permissi+le tension? t"e pipe (ill +e di-ided in lengt"s and eac" lengt" tested at a press&re similar to t"e ecess press&re calc&lated for t"e adacent &pper element. !"e Contractor s"o&ld foreseen from t"e +eginning t"e s&pply and dismantling of sp"erical pl&gs necessary for t"e partial tests. !"e test (ill +e cond&cted as follo(sE !"e test press&re is maintained for 3/ min&tes and at least for t"e time necessary to proceed if possi+le to -erify t"e impermea+ility of t"e (elding as (ell as a complete c"ec* of t"e pipe. )f any defects are fo&nd in t"e co&rse of t"ese tests? t"e 0ngineer (ill re&est? according to t"e nat&re of t"e defect? eit"er t"e repair at site or s&+stit&tion of t"e defecti-e elements. !"e Contractor (ill co-er t"e ependit&re inc&rred as (ell as t"at of t"e ne( test after repair. )f t"e pipe is s"o(n to +e impermea+le and not"ing a+normal fo&nd? a memorand&m (ill +e dra(n &p indicating corresponding tests? stating t"e date of filling (it" (ater. !"e test de-ices (it" t"eir necessary installation designs m&st +e s&+mitted to t"e 0ngineer for appro-al at t"e same time as t"e installation sc"ed&le. 5.!.!.,.'
Contro% Con)itions
!"e cost of all controls and tests defined "erein (ill +e +orne t"e Contractor ("o (ill +e deemed to "a-e incl&ded t"em in "is rates for installation. He m&st s&pply all t"e personnel and material necessary? t"e test material remaining "is properly.
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!
Technical Specification
!"e tests eec&ted in t"e place of installation (ill +e sent +y t"e Contractor
Co&&issioning
%s soon as t"e tests are completed and t"e cond&its in condition to f&nction? t"e 0ngineer (ill proceed toget"er (it" t"e Contractor to ma*e an inspection of t"e (or*s? in order to -erify t"at all material foreseen in t"e 'artic&lar !ec"nical Specifications "a-e +een s&pplied and installed and t"at t"ey are ready to f&nction. "en t"e "ydroelectric generating sets are ready to f&nction? t"e Contractor (ill proceed (it" t"e cleaning and interior re-ision of t"e cond&its. Refilling (it" (ater (ill t"en ta*e place for a test period and setting of 15 days. )f d&ring t"is period an accident occ&rs? d&e to t"e material s&pplied or (or* carried o&t +y t"e Contractor? ca&sing partial or complete ser-ice interr&ptions? t"e d&ration of t"e period (ill +e prolonged for t"e n&m+er of days e&al to t"at of t"e interr&ptions. D&ring t"is period all re-isions? repairs or modifications ("ic" affect t"e material s&pplied +y t"e Contractor? (ill +e carried o&t +y "im and at "is o(n epense. ;nce t"is period "as elapsed? t"e commissioning (ill +e made +y t"e 0ngineer and recorded in a memorad&m. !"e Certificate of Completion of (or*s according to cla&se 4.1.4.#.1
Han)o;er o+ t-e 8or2s
;n epiry of t"e maintenance 'eriod? and? after t"e Contractor "as remedied all errors and defects e-ent&ally fo&nd +efore t"is period (as d&e? t"e Contractor may re&est in (riting to proceed (it" t"e "and o-er. % general eamination of t"e material (ill +e made o-er t"e follo(ing 2 mont"s and of its f&nctioning conditions since t"e date of Completion? and a consens&s memorand&m +e dra(n &p. !"e "and o-er (ill +e immediately effected and "a-e t"e date of t"e re&est of t"e Contractor ("en t"e a+o-e mentioned eamination? ass&ming no defect is re-ealed and t"e material satisfies t"e conditions fied +y t"e 'artic&lar !ec"nical Specifications? is -erified d&ring t"e aintenance 'eriod.
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TECH-SP5.W51
"
Technical Specification
5.!..
Re@ection
!"e 0ngineer reser-es t"e rig"t to reect t"e material in t"e follo(ing casesE ,)na+ility of t"e Contractor to p&t t"e material in condition for t"e inal Completion. ,)f maor defects appear d&ring t"e aintenance 'eriod and ("ic" co&ld not +e corrected +y t"e Contractor in a reasona+le period of time. !"e reection co&ld +e total or partial. )n case of reectionE !"e 0ngineer (ill accept t"at t"e reected material (ill +e replaced to t"e acco&nt of t"e Contractor in a period of time fied +y t"e 0ngineer. 5.!..'
Specia% Case o+ Paints "0arant(
!"e paint (ill +e g&aranteed for a period of fi-e years? ("ic" means to say t"at is? at t"e end of t"is period? t"e appearance of t"e paint (ill not? in any part of t"e cond&it? s"o( signs of r&sting or deterioration.
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5. PARTIC$LAR TECHNICAL SPECIFICATION
Technical Specification
5.
PARTIC$LAR TECHNICAL SPECIFICATION 5..1 S0pp%( o+ 6ateria% 5..1.1
P-(sica% Re=0ire&ents
%ll steel plates are to +e of grade 7St0 355 ! mm Jpper yield point 355 >mm 0longation at r&pt&re min 22 )nside diameter for +ending test at 1#/ is 2 t <("ere t plate t"ic*ness= °
5..1.!
C-e&ica% Co&position
!"e c"emical composition of t"e steel for t"e melt analysis (ill +e as follo(s < +y -ol&me=E Car+on
/.12 %l&min&m <%l= total /.5/ oly+den&m <o= 1.6/ ic*el <i= /./3/ io+i&m <+= /./25 !itani&m
/./15 /.15 /.3/ /./5 /./5 /.1/ /.12
!"e total s&m of C"romi&m
5..1.
April 10, 2017
0lement
Limit accepta+le +y -ol&me
'ermissi+le tolerance -al&es of t"e melt analysis in +y -ol&me
C Si n ' S %) o i + !i 9
/.16 /.5/ 1.#/ /./3/ /./25 /./2/ /./15 /.15 /.3/ /./5 /./5 /.14
/./2 /./5 /.1/ /.//5 /.//5 /.//2 /.//5 /./3 /./5 /./1 /./2 /./2
Re=0ire) Tests an) 0a%it( Certi+icates
TECH-SP5.W51
1
Technical Specification
!"e follo(ing tests s"o&ld +e carried o&t +y an independent instit&te or t"e 0ngineer? t"e res<s presented in a test certificate in accordance (it" D) 5//4$? 'art 3. !ensile test according to D) 5/145 C"arpy notc"ed +ar impact test according to D) 5/115 !ec"nological +ending test according to D) 5/111 C"emical composition test as sample analysis %ll materials re&ired for "olding t"e penstoc* do(n on t"e s&pport +loc*s s&c" as metal strip? mo&nting plates incl&ding stiffenings m&st +e of t"e same steel grade. %nc"or +olts? (as"ers and n&ts s"o&ld +e of a steel grade 7St0 255 !
6an0+act0re o+ t-e Penstoc2 5..!.1
Pro)0ction in Factor(
5..!.1.1
Pipes
!"e pipes ad special parts (ill +e c&t? rolled and (elded according to t"e tolerances gi-en +elo(. !"e edges of t"e pipe ends m&st +e prepared as s"o(n in dra(ings? detail %. elding of pipes (ill +e done +y mac"ines or a&tomates. !"e (elding e&ipment and (elding proced&re t"e man&fact&re intends to &se m&st +e descri+ed and eplained to t"e 0ngineer ("o s"o&ld gi-e "is appro-al. o special stress relie-ing preca&tions are necessary for pipe (elding. elding of all special parts s&c" as man"oles? epansion oints? +ends? etc. m&st +e done +y professional (elders. %ll (elders (or*ing on t"is proect m&st +e &alified and +e appro-ed +y t"e 0ngineer. !"ey s"o&ld comply (it" t"e conditions as descri+ed for (elding on site as indicate +elo(. %ll (elding m&st +e of a &ality to comply (it" Class 1 according to D) #3/ and D) #12. )n addition all (elds m&st comply (it" D) #563? 'art 3. Corrosion protection (ill +e eec&ted according to Cla&se 5.2.2.4. 5..!.1.!
Distri0tion Pipe
%ll parts (ill +e c&t? rolled and (elded according to t"e tolerances gi-en. !"e edges of t"e pipes and ot"er parts (ill +e prepared in t"e same (ay as for t"e penstoc*. elding (ill only +e done +y professional (elders "olding a -alid certificate according to D) #56/ R )). %ll (elding m&st +e of a &ality to comply (it" Class 1 according to D) #3$? D) #12 and D) #563? 'art 3. !"e +if&rcation section (ill &ndergo a stress relie-ing treatment as specified in Cla&se 5.2.1.2. 5..!.!
Testing in Factor(
7ot" t"e 0mployer and 0ngineer reser-e t"e rig"t to -isit to t"e factory at any time and carry o&t inspections and tests ("ene-er t"ey (is". !"e also reser-e t"e rig"t to carry o&t any additional tests at t"e cost of t"e s&pplier. 7ot" t"e 0mployer and 0ngineer (ill send 0ngineers and tec"nicians from time to time to t"e factory to s&per-ise prod&ction and to carry o&t tests and inspections. % co&nterpart m&st +e a-aila+le to t"em in t"e factory ("o is &alified and f&lly con-ersant (it" t"e tests and inspections to +e carried o&t.
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Technical Specification
%ll inspection personnel of t"e 0ngineer m&st "a-e access to t"e re&ired information to -erify t"at t"e prod&ction complies (it" t"e standards specified. !"e follo(ing tests "a-e to +e carried o&t +y t"e 0ngineer? t"e records made and *ept a-aila+le to t"e inspection personnel of t"e 0ngineerE ,9is&al inspection of eac" pipe and meas&rement of t"e internal diameter and t"e (all t"ic*ness at eac" end of t"e pipe. !"e internal diameter tolerance is fied +y t"e mac"ine tolerances. ,9is&al inspection of t"e inner and o&ter s&rfaces and? in partic&lar? of t"e (elding seam. !"e pipe m&st +e free from dents and del-es. ,!"e maim&m di-ergence of t"e pipe from a straig"t line m&st not +e more t"an 1.5 mm per metre lengt". ,'ipe ends (ill +e +e-elled +y mac"ines according to t"e specifications and m&st +e of plain s&rface area? eactly normal to t"e pipe ais. ,!"e ro&ndness of t"e pipe (ill +e tested (it" a com+ined inner and o&ter ro&ndness scale. )t (ill +e inserted 1/ cm inside t"e pipe end and t"e de-iation from t"e circ&lar s"ape so meas&red s"o&ld +e not +e more t"an /.#. ,eas&rement of t"e eact lengt" of eac" pipe and ot"er dimensions from special parts s&c" as +ends? epansion oints etc. ,0ac" pipe m&st +e mar*ed +y consec&ti-e n&m+ers? t"e same n&m+er also to +e indicated on t"e test certificate. )t m&st +e of s&fficient &ality so t"at it (ill not +e (as"ed off or fade. )t s"o&ld +e indicated ("et"er t"e pipe "as +een c"ec*ed +y N,ray or <rasonic testing. ,"ene-er a ne( pipe type is prod&ced
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Technical Specification
all t"ic*ness mm
ominal press&re *>mm
6 # 1/
1./ 26.5 3.5
,!"e elements of t"e con-ersion pipe are eempted from t"e press&re test in factory. 5..!.
8e%)ing On Site
5..!..1
8e%)s -ic- can e &a)e on Site
,;n,site (elding (ill only +e permitted at straig"t pipe sections. ;nly circ&lar (elds can +e made on site and no (elds in t"e longit&dinal direction of t"e pipe. ,elding (ill not +e permitted on special parts s&c" as man"oles? epansion oints? +ellmo&t"s? and +ends. 5..!..!
8e%)ing E=0ip&ent
,!"e complete (elding e&ipment m&st +e in good condition. ,'rior to (elding starting? t"e e&ipment (ill +e inspected and appro-ed +y t"e 0ngineer. ,!"e e&ipment (ill s&+se&ently +e inspected periodically +y t"e 0ngineer. )f t"e e&ipment is in an &nsatisfactory condition t"e 0ngineer (ill stop t"e Contractor from (elding on site &ntil t"e pro+lem is rectified? all costs arising from t"is +eing +orne +y t"e Contractor. ,o (elding s"all +e carried o&t if t"e am+iant temperat&re drops +elo( , 5 C ecept (it" t"e prior appro-al of t"e 0ngineer. )n case of +ad (eat"er conditions t"e Contractor (ill ma*e appropriate alternati-e arrangements or re,programme "is (or*. °
,%ll cons&ma+le electrodes &tiliBed m&st +e in accordance (it" t"e specified standard and (ill +e inspected and tested at any time +y t"e 0ngineer. !"ey m&st +e *ept in special "eated containers in case of "ig" "&midity or lo( temperat&res. ,S&ita+le cons&ma+le electrodes are 7THL0R 09 4 in accordance (it" D) 1$13 043 43 7 1/ or e&i-alent. !"e c"aracteristics of t"ese electrodes areE Car+on /./5 Silicon /.5 anganese /. ield strengt" 43/ , 45/ >mm 2? min. 355 >mm 2 !ensile strengt" 4#/ , 5// >mm 2? min. 45/ , 5/ >mm 2 0longation 3/ ? min. 2 otc" impact -al&e according to )S;,9,test 2// 8? min. 11# 8o&le
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Technical Specification
5..!..
0a%i+ication o+ 8e%)ers
,!"e 0ngineer may instr&ct t"e Contractor to remo-e any (eld at no cost to t"e 0ngineer? ("ic" "as +een made +y personnel (it"o&t an a&t"oriBed certificate. ,0-ery proposed (elder (ill carry o&t a test (eld in t"e presence of t"e 0ngineer. 0-ery (elder m&st complete at least one circ&lar (eld o-er t"e entire diameter ("en t"e pipes are in "oriBontal position. !"is test s"all +e carried o&t on pipes of 6 mm (all t"ic*ness. ,!"e (eld (ill +e tested according to D) #56/ R )). ;nly (elders appro-ed +y t"e 0ngineer (ill +e permitted to do (elding on t"is proect. ,%ll test (elds (ill +e at t"e cost of t"e contractor. 5..!..'
8e%)ing Proce)0re
,elding can +e done (it"o&t special stress relief preca&tions? "o(e-er? only (it" t"e &tmost care. ,!"e (eld &ality m&st +e &p to Class 1 as specified in D) #12 and #3/ and done in accordance (it" D) #563? 'art 3. ,7efore pipes are (elded toget"er? t"e pipe edges (ill +e c"ec*ed for t"e correct +e-eling and m&st +e cleaned. !"e pipe ends m&st +e dry. )f necessary? a tent or fly s"eet (ill +e pro-ided to facilitate t"is. ,)f deformations at t"e pipe edges cannot +e corrected? a section of t"e pipe (ill +e c&t off and t"e edges ne(ly prepared for (elding. ,7efore pipes are (elded toget"er t"ey m&st first +e aligned and fied +y a self,centering clamp. !"e longit&dinal (elds of t"e pipes m&st +e offset +y at least 2/ . °
,!"e offset of t"e clamped pipe edges m&st not +e more t"an 1.6 mm in eac" direction. ,!"e gap +et(een t"e pipes m&st +e 2 mm. ,!"e root r&n (ill +e carried o&t +y t(o (elders at t"e same time? starting sim<aneo&sly at diametrically opposite positions to a-oid any deformation of t"e pipe. ,!"e self,centering clamp can only +e remo-ed after completion of t"e root r&n. ,!"e (elding seam (ill t"en +e caref&lly cleaned of slag and ot"er o+stacles. ,!"e second r&n s"all +e carried o&t immediately after t"e root r&n "as +een cleaned. !"e time elapsed +et(een t"e t(o r&ns s"o&ld +e as s"ort as possi+le and m&st not eceed 1/ min&tes. ,!"e second r&n s"all again +e carried o&t +y t(o (elders at t"e same time? starting at diametrically opposite positions. ,!"e remaining r&ns s"all +e carried o&t after cleaning t"e second r&n of slag and any ot"er o+stacles.
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Technical Specification
,;n r&n s"all +e made at t"e inner side of t"e pipe. ,0ac" r&n m&st +e completed +efore a ne( one can +e commenced. ,)gnition of t"e cons&ma+le electrodes at t"e s&rface of t"e pipe (ill not +e permitted. ,0ac" (elder s"o&ld sign t"e (elding seam (it" "is initials +y a permanent ma*er. !"e (elder ("o carried o&t t"e root r&n m&st +e t"e first one? t"e ot"ers p&t t"eir mar* +elo(. 0ac" (elder s"o&ld &se t"e same initials from t"e +eginning to t"e end of t"e proect. 5..!..5
Testing an) Repair 8e%)ing
%ll (elds made on site s"all +e tested +y N,ray and <rasonic testing to 1//. % red&ction of t"e tested percentage may +e allo(ed +y t"e 0ngineer if t"e fail&re rate is -ery lo(. elds on t"e con-ersion pipe are eempted from t"is ro&tine. N,ray and <rasonic test. !"e follo(ing criteria (ill +e f&lfilled. ,'orosityE aim&m diameter of single gas +&++les m&st not eceed 1.6 mm. Gro&ps of more t"an 6 +&++les per 4 cmU (ill not +e accepted and m&st not "a-e a diameter of more t"an 1 mm. Gro&ps s"o&ld not +e less t"an 1// mm apart. ,SlagE Slag intr&sions on t"e root r&n m&st not +e larger t"an 1/ mm? and in t"e ot"er r&ns 2/ mm? and not (ider nor deeper t"an 1.6 mm. !"e total lengt" of slag intr&sions s"o&ld not eceed 4/ mm in a 3// mm section. !"e minim&m distance +et(een single intr&sions m&st not +e less t"an 15/ mm. ,7&rnt t"ro&g" spotsE !"ese m&st not +e longer t"an 6 mm and ? in a (elding seam of 3// mm in total? no longer t"an 12 mm. !"e minim&m distance +et(een t(o spots is 15/ mm t"e total +&rnt t"ro&g" lengt" on any one total (eld m&st not eceed 3/ mm. ,)ns&fficient (elding dept"E !"is "appens if t"e gap to +e (elded is not closed f&lly (it" (elding material. Single sections m&st not +e longer t"an 15 mm and on a 3// mm distance not more t"an 25 mm in total. !"e solid section in +et(een m&st +e a minim&m of 15/ mm. ,Crac*s and lac* of f&sionE elding seams (it" crac*s or lac* of f&sion are not accepted.
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Technical Specification
,Jnderc&tsE Jnderc&ts net to co-er r&ns m&st not +e longer t"an 4/ mm and not deeper t"an /.5 mm? and at t"e root r&n? or t"e inner r&n? no longer t"an 3/ mm. ,;cc&rrence fre&ency of (elding defectsE %n acc&m&lation of any of t"e a+o-e descri+ed (elding defects m&st not eceed 5/ mm in a 3// mm section. )n total not more t"an # defects o-er t"e total (elding lengt" are accepted. % press&re test (it" (ater (ill +e carried o&t in t"e presence of t"e 0ngineer after fiing t"e penstoc* in position. Critical sections of t"e penstoc* s"o&ld still +e accessi+le. !"e test press&re s"all +e 1.3 times for penstoc* and distri+&tion pipe t"e nominal press&re? i.e? e&i-alent to a 4## m "ig" (ater col&mn at t"e lo(er end of t"e penstoc* and 1.5 times for t"e con-ersion pipe? i.e? 3/ m (ater col&mn at t"e deepest point. 'rior to t"e pipe +eing filled (it" (ater? t"e penstoc* (ill +e cleaned t"oro&g"ly. "en filling t"e pipe? care m&st +e ta*en to ens&re t"at no (ater "ammer occ&rs and t"at all air can +e released. !"e (ater temperat&re s"o&ld +e constant t"ro&g"o&t t"e test and t"e temperat&re m&st +e meas&red " is allo(ed. !"e 0ngineer (ill confirm t"e s&ccessf&l test. %ll sections ("ere repair (elding is carried o&t m&st +e 1// N,ray and <rasonic tested. !"e 0ngineer reser-es t"e rig"t to insist t"at no repair (elding may +e carried o&t &nless "e is present.
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