Improved SEJ(Laying, Maintenance & Inspection

IMPROVED SEJ(LAYING, MAINTENANCE & INSPECTION.) BY:- Harpal S!"# (SSE$P%AY$RPJ)

INTRODCTION O! I!'a! Rala* IRS '+*"! *# +pa!*/! 0/!* +r+ la' /! 1/# +!'* /2 L%R ! l+3 /2 B34+r ral*. T#+*+ SEJ* ar+ 2al!" 2r+53+!l a* #+r+ +r+ 6a! a*+* /2 2ra3r+ /2 S/7 ral$T/!"3+ ral ## * a4+!" Sa2+ /2 r3!!!" ra!*

DRA% BAC8 O9 CONVENTIONAL SEJ 

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S/7 ral 2ra3r+ a7+* pla+ a * r+'3/! /2 *+/! a!' '3+ / !/l+6+! /2 1+!'. S/7 ral "+ 3p a a1/3 ;< = >< 66 aa 2r/6 #+ p/! /2 *+/! r+'3/! (#r/a) a!' ?<< 66 2r/6 * al +!' ## * l+2 3!*+3r+' a"a!* l/!"3'!al 6/+6+!. T#+ 1r/7+! p++ 7++p* 6/!" aa 1 #a66+r!" /2 pla!" #++l* a!' '*/!!3 # '+r "ap ! ra7 +*p+all ! !+r.

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Ha66+r!" a!' 1r+a7a"+ /2 1+ar!" pla+*.

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C#pp!" /! #r/a /2 S/7 ral & T/!"3+ ral.

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L++l '4+r+!+ a #r/a /2 T/!"3+ ral & S/7 ral.

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Spa!" /2 *l++p+r* a 6' /2 SEJ ?<< 66.

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I! a*+ /2 2ra3r+  * +r '@3l / arr /3 +6+r"+! r+par.

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N/ *3a1l+ / 2/r la!" /! 3r+* *#arp+r #a! <. '+".

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R+* /2 MS a ## a* pr/'+' / S/7 ral ar+ l//*+!+' a!' 3!3*3al */3!' #+ar' #l+ r3!!!" /2 ra!*.

CONVENTIONAL SEJ

REIREMENTS O9 IDEAL SEJ 

 T/ a/' 1+!'* ! '+*"! /2 #+ S/7 ral a!' T/!"3+ ral.

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 T/ a/' a! 2ra3r+* ! #+ 1+! p/r/! /2 S/7 ral & T/!"3+ ral.

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S3a1l+ / la /! 3r+* *#arp+r #a! <. '+". a!' 3p / >.< '+".

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S3a1l / #"#+r al+ l/a'*.

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S3a1l 2/r #"#+r *p++'*.

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I! a*+ /2 2ra3r+ par /2 S/7 ral p++ *#all !/ 6/+ 2r/6 * /r"!al p/*/! '3+ / l/!"3'!al 2/r+*.

 TYPES O9 IMPROVED SEJ SEJ # /!+ "ap D++l/p+' 1 M$* Ra#++ I!'3*r+* L', Cal3a. SEJ # / "ap* D++l/p+' 1 M$* B!a M+ala,  Ja6*#+'p3r. & M$* C#!3par! E!"". %/r7*, Bara1a!7.

ADVANTAGES OF IMPROVED SEJ Advantages of SEJ with one

Advantages of Two gap SEJ

gap : 

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N/ 1+!'* ! /!"3+ a!' */7 ral. O!l  *l++p+r* /2 *a!'ar' SEJ /! PSC a**+61l ar+ 3*+'. C#+7 ral* "3ar' a"a!* ++**+ pla /2 /r! /3 #++l*.

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D+*"! *3a1l+ 3p / ;<<66 6a. "ap.

 I "+* #+ +l' *a4 1++r /!r/l ! pr/'!" /rr+ !/6!al "ap a #+ 6+ /2 !*alla/!$ r+pla+6+! /2 SEJ.  T#+ 6!636 #+a' '# /2 /!"3+ ral * 6/r+ #a! F /2 23ll ral #+a' '# (>>.?66) a* a"a!*  /2 #+a' '# (;.66) ! /!+!/!al p+.

 T#+ +ar pr/!+ ar+a* /2 #+a'* /2 */7 a!' /!"3+ ral* ar+ p+arl*+' #r/3"# a *p+al pr/+** / a#++ a #ar'!+** /2 ;< BHN

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 T#+ 6a636 "ap * ? 66 ## l+a' / l+**+r 6pa 3!'+r pa**!" #++l* a* /6par+' / "ap /2 ?> 66 ! IRS p+.

Ma636 #+a' #7!+** /2 */7 ral * . 66 a* /6par+' / ?; 66 ! IRS p+ /2 SEJ ## ! 3r! !r+a*+* #++l *3pp/r. Sa3* /2 */7 ral * *a a* /6par+' / 6/!" p+ ! IRS p+ /2 SEJ. I * *3a1l+ / 1+ la' ! 3r+* ! *+p* /2 FK,F.K,;K,;.K,K,.K,>K 1 *3ppl!" pr+ 3r+' */7 ral*.

 T#+ /!"3+ ral 1+!" *l+!'+ r a! 1+ 3r+' a *+ 1 #+ +l' *a4.

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OMPARISON !EET"EEN NORMA# SEJ AND MODIFIED SEJ S$No

Feat%&es

No&'a( SEJ

Modi)ed SEJ

Me&its

*

B+!' ! ral*

F ! 

N/ 1+!'

N/ 1r+a7a"+

+

Sl++p+r *pa!" a !r+a*+* *a1l

M' /2 SEJ

?<< 66

<< 66

,

D+*"!+' 2/r

< 66$F;< 66

F< 66

L+** #++l I6pa ! lar"+ "ap

;. 66

>; 66

I!r+a*+ l2+

-

H+a' #7!+** /2   T/!"3+ ral

.

H+a' #7!+** /2  S/7 ral

?; 66

 66

M/r+ #++l *3pp/r

/

Sa3* /2 S/7 ral

!*+3r+'

S+3r+'

Sa2+ +!*3r+'

0

S3a1l / la /! 3r+*

L6+' 3p / <. '+".

Ca! 1+ la' 3p / >.< '+".

S/p+ 2/r 3*+

1

Pr/*/! /2 F ! ;< a! ! SEJ *l++p+r

N/ pr/'+'

Pr/'+'

B3l 3p * a/'+'

2

9al3r+ ra+

V+r #"#

9/r la* + +ar* !/ 2al3r+ * r+p/r+'

D+r+a*+* 6a!+!a!+ /*

INSTALLATION O9 MODI9IED SEJ 

Pr+para/r /r7*.

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I!*alla/! /r7*.

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R+2+r+!+ 6ar7* a!' "ap 6+a*3r+6+!*.

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R/3!+ 6a!+!a!+ /2 M/'+' SEJ.

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Sp+al 6a!+!a!+.

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!3*3al /3rr+!+*.

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I!*p+/! a!' r+/r'*.

PREPARATORY %OR8S 

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D+al* pla! /2 L%R ra7 *#/!" +a l/a/! /2 SEJ / 1+ '+'+'. D*a!+ 1+++! #+ +!'* /2 a'0/!!" L%R 1+++! ! ## M/'+' SEJ / 1+ la' *#all 1+ +53al / l+!"# /2 M/'+' SEJ-;F 6. Ma+ral r+53r+' a* 2/ll/* :

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Ma+ral r+53r+' 2/r /!+ *+ /2 M/'+' SEJ a* p+r 'ra!". S3@+! !361+r /2 . 6 l/!" 3lra*/!all +*+' l/*3r+ ral* /2 *a6+ *+/!. Ral 3!" +53p6+!. S3@+! !361+r /2 F 6 *#pla+* # *3a1l+ la6p*. E53p6+! 2/r pr/+/! /r7. S3@+! 6a!p/+r # //l*.

INSTA##ATION "OR3S 

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I6p/*+ SR /2 < 8MPH /! #+ par3lar 8M #+r+ SEJ / 1+ !*+r+'. SEJ *#all 1+ pr+-a**+61l+' a* p+r 'ra!" /! PSC *l++p+r* a!' 7+p r+a' 1+*'+ /2 pr/p/*+' l/a/! # *3a1l+ arra!"+6+! / *#2 /! / ra7. M!636 F #r. 1l/7 / 1+ /1a!+' a!' 1/# +!'* /2 ral *#all 1+ 3 a* p+r 6ar7!".

 T#+ +*!" PSC *l++p+r* a!' ral* / 1+ r+6/+'.

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Balla* *#all 1+ l++l+'.

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Pr+-a**+61l+' SEJ / 1+ !*+r+' ! ra7 & 0/!+' # *3a1l+ *# p la+ & la6p*.

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Balla* *#all 1+ r+/3p+' a!' ra7 *#all 1+ a+!'+' / /rr+ l!+ a!' l++l.

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%+l'!" /2 1/# +!'* / 1+ '/!+ a* p+r aala1l /2 1l/7.

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SEJ "ap / 1+ a'03*+' a* p+r L%R 6a!3al '3r!" '*r+**!" +6p+ra3r+.

RE9ERENCE MAR8 AND MEASREMENT 

Pllar* *#all 1+ +r++' a C+!r+ /2 SEJ a!' r+2+r+!+ 6ar7* *#all 1+ 6ar7+' /! #+*+ pllar* /! +#+r *'+ /2 ra7 '3r!" '*r+**!".

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SEJ "ap / 1+ pr/'+' >< 66.

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Mar7!" /! pllar* 1+ *#all 1+ ! 2/r6 /2 *a 6ar7*.

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A *r!" *#all 1+ *r+#+' ar/** ra7 /+r #+ *a 6ar7* /2 r+2+r+!+ 2/r 6+a*3r!" SEJ "ap # r+*p+ / p /2 T/!"3+ ral$E'"+ /2 S/7 ral.

ROTINE MAINTENANCE & SPECIAL MAINTENANCE 

All 2a*+!!" *#all 1+ /6pl++ a!' +ll *+3r+'.



9a*+!!" *#all 1+ r+!++' /! !/ 6/r+ #a! /!+ ral *+al a a 6+.

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O!+ ! 2/r!"# #+ SEJ *#all 1+ #+7+', pa7+' a!' al"!+' 2 !++**ar.

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Ol!" a!' Gr+a*!" /2 T/!"3+ ral & S/7 ral *#all 1+ arr+' /3 /!+ ! 2/r!"#. D3r!" 'al par/ll!", #+ 8+ 6a! *#all 7++p *p+al a# /! #+ SEJ. SEJ "ap / 1+ a'03*+' '3r!" '*r+**!" ## *#all 1+ arr+' /3 a* p+r pr/*/!* la' ! L%R 6a!3al.

NSAL OCCRRENCES 

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I2 a!/#+r SEJ * !/ aala1l+ 2/r r+pla+6+!, 1/# 'a6a"+' SEJ ral a!' 3!'a6a"+' SEJ ral /! /pp/*+ *'+ *#all 1+ r+pla+' 1 l/*3r+ ral a!' /!!++' / L%R$S%R # *3a1l+ la6p* a!' *#pla+*. N+ SEJ / 1+ !*all+'.

INSPECTION & RECORDS 

I!*p+/! *#all 1+ arr+' /3 /! ++r 2/r!"# '3r!" #+ / /l'+* a!' #/+* 6/!#* /2 #+ +ar '3r!" 6!636 a!' 6a636 +6p+ra3r+* a *3p+r*/r l++l a!' *+!/r l++l.

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Al+r!a+l /!+ ! / 6/!#* '3r!" /#+r 6/!#* a *3p+r*/r l++l.

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R+/r'!" /2 !*p+/! !/+* a* p+r pr+2/r6a "+! ! L%R 6a!3al.

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C/6pla!+ /2 /1*+ra/!* /2 '++!+* * al*/ +!+r+' ! #+ !*p+/! r+"*+r.

 THAN8 YO