CAMTECH/E/11-12/Spl-Pre for OHE/1.

0 1
f dsoy dk;kZy;hu mi;ksx gsrq

Hkkjr ljdkj GOVERNMENT OF INDIA

jsy ea=ky; MINISTRY OF RAILWAYS

vks,pbZ ds vuqj{k.k ,oa 'kkiZ

doZ ij czsdMkÅu vVsUM djrs
le; dh fo’ks"k lko/kkfu;k¡
y{; lewg % vks,pbZ deZpkjh

dSeVs
eVsd@bZ@11&12@fo’ks"k lko/kkfu;k¡&vks,pbZ
fnlEcj ] 2011

egkjktiqj, Xokfy;j & 474 005

Maharajpur, GWALIOR - 474 005
Special Precaution to be Taken for Maintenance December, 2011
of OHE and Attending Break Downs at Sharp Curves
2 CAMTECH/E/11-12/Spl-Pre for OHE/1.0

vks,pbZ ds vuqj{k.k ,oa 'kkiZ doZ

ij czsdMkÅu vVsUM djrs le;
dh fo’ks"k lko/kkfu;k¡

xq.koRrk uhfr

jsyksa esa ;k=h vkSj eky ;krk;kr dh

c<+rh ek¡x dks iwjk djus ds fy,
xq.koRrk Áca/k Á.kkyh esa vuqla/kku]
fMtkbuksa vkSj ekudksa esa mRd`"Vrk rFkk
lr~r lq/kkjksa ds ek/;e ls lkafof/kd
vkSj fu;ked vis{kkvksa dks iwjk djrs
gq, lqjf{kr] vk/kqfud vkSj fdQk;rh
jsy ÁkS|ksfxdh dk fodkl djuk A

December, 2011 Special Precaution to be Taken for Maintenance

of OHE and Attending Break Downs at Sharp Curves
CAMTECH/E/11-12/Spl-Pre for OHE/1.0 3

Hkwfedk
vks,pbZ dk vuwj{k.k djrs le;] dk;Z dj jgs
deZpkfj;ksa dh lqj{kk dks lqfuf’pr djuk pkfg,A bl ikWdsV
cqd ds vUrxZr vks,pbZ ij dk;Z@vuqj{k.k djuk lkFk esa 'kkiZ
doZ ij czsd Mkmu vVsUM djrs le; lko/kkfu;ksa ds ckjs esa
crk;k x;k gSA

;g Li"V fd;k tkrk gS fd ;g ikWdsV cqd jsYos

cksMZ] vkjMh,lvks ;k ,lh VªsD’ku eSuqvy ¼,lhVh,e½ }kjk
fofuZfn"V fdlh Hkh fo/kku dks foLFkkfir ugha djrh gSA ;g
ikWdsV cqd dsoy ekxZ n’kZu gsrq gS vkSj ;g ,d LVsP;wVjh
MkWD;wesaV ugha gSA

eSa VhvkbZ@Mk;jsDVjsV vkjMh,lvks y[kuÅ dk cgqr

vkHkkjh gwW¡ vkSj mu lHkh deZpkfj;ksa dk vkHkkjh gw¡ ftUgksus bl
gLriqfLrdk dks cukus esa gekjh lgk;rk dhA

rduhdh mUu;urk vkSj lh[kuk ,d lr~r ÁfØ;k gSA

vr% bl gLriqfLrdk esa tksMus@lq/kkjus ds fy,s fy[kus esa Lora=
eglwl djsaA ge vkids ;ksxnku dh ljkguk djsxsaA

dSeVsd] Xokfy;j ih;w"k xqIrk

fnuk¡ad% 23 vxLr 2012 la;qDr funs’kd ¼fo|qr½
e-mail: delcamtech@rdso.railnet.gov.in

Special Precaution to be Taken for Maintenance December, 2011

of OHE and Attending Break Downs at Sharp Curves
4 CAMTECH/E/11-12/Spl-Pre for OHE/1.0

fo"k; lwph

¼v½ LVkQ }kjk vks,pbZ ij dk;Z@

vuqj{k.k djrs le; fo’ks"k
lko/kkfu;k¡] 01

¼c½ 'kkiZ doZ ij czsdMkÅu vVsUM djrs

le; fo’ks"k lko/kkfu;k¡ 17

December, 2011 Special Precaution to be Taken for Maintenance

of OHE and Attending Break Downs at Sharp Curves
CAMTECH/E/11-12/Spl-Pre for OHE/1.0 5

v- LVkQ }kjk vks,pbZ ij

dk;Z
dk;Z@vuqj{k.k djrs
le; fo’ks"k lko/kkfu;k¡

Special Precaution to be Taken for Maintenance December, 2011

of OHE and Attending Break Downs at Sharp Curves
CAMTECH/E/11-12/Spl-Pre for OHE/1.0 1

1- fcuk **ijfeV Vw odZ** ds ykbZo vks,pbZ ls nks

ehVj ;k mlls de nwjh ij jgdj dksbZ dk;Z
u djsaA
2- cM+s /kkrqbZ phtksa tSls QsfUlax] IysVQkeZ ds
/kkrqbZ LVªsDpj tks Vªsd ds lekukUrj yxs gksrs
gS] vkfn ls b.MfDVo ÁHkko iSnk gksrk gSA vr%
lqj{kk ds fy, bUgsa vFkZ dj nsuk pkfg,A
3- ,lbZ@tsbZ }kjk fMLpktZ@vfFkZax iksy
,lsEcyh dks ekg esa ,d ckj pSd djuk
pkfg,A

4- ÁR;sd dk;Z ny dks dk;Z LFky ds nksuks vksj

de ls de nks vyx&vyx vFkZ }kjk
lqjf{kr fd;k tkuk pkfg,A
Special Precaution to be Taken for Maintenance December, 2011
of OHE and Attending Break Downs at Sharp Curves
2 CAMTECH/E/11-12/Spl-Pre for OHE/1.0

5- dscy ds Åijh
DySi vSj vfFkZax
DySi ds tksM dh
fujUrjrk dh tk¡p
ikf{kd esa ,d ckj
djuh pkfg,

6- ;fn vFkZ iksy dh dscy

dh yM+sa 20% ls T;knk
VwVh gks rks dscy gh cny
nsuk pkfg,A

7- vFkZ iksy dh dscy

ypdnkj gksuh
pkfg, vksj mldk
Økl lsD’ku 40feeh2
gksuk pkfg, ftlls
'kkVZ lfdZV djaV dks
ogu dj ldsA

December, 2011 Special Precaution to be Taken for Maintenance

of OHE and Attending Break Downs at Sharp Curves
CAMTECH/E/11-12/Spl-Pre for OHE/1.0 3

8- vks,pbZ dh vfFkZax ds fy,] dk;Z LFky lss de

ls de ,d Liku dh nwjh ij [kaEcs ij vfFkZax
DySi dks vPNh rjg ls yxk nsa] o lqfuf’pr
dj ysa fd ml [kaEcs ls jsy rd dk ckW.M
Bhd rjg ls yxk gksA

9- vfFkZax DySi dks ges’kk

igys VªsD’ku jsy ;k [kaEcs
ij dlsa o fQj Åijh DySi
ds vkjVh ;k chVh ij VsLV
djds vks,pbZ ij Vkax nsaA

Special Precaution to be Taken for Maintenance December, 2011

of OHE and Attending Break Downs at Sharp Curves
4 CAMTECH/E/11-12/Spl-Pre for OHE/1.0

10- vfFkZax dks gVkrs le; igys vks,pbZ ij Vaxs

Åijh DySi dks gVk;sa o fQj jsy ;k [kaEcs ij
yxs DySai dks [kksysaA

11- ;fn nks dk;Znyksa ds chp dh nwjh 100 eh- ls

T;knk gS rks ,d vFkZ e/; esa bl Ádkj yxk;sa
fd nks vFkksZa ds chp dh nwjh 100 eh- ls T;knk
u gksA

12- VwVs gq, rkjksa dks u Nq,sa

tc rd fd mldh
lIykbZ can vkSj vFkZ u
dj nh x;h gksA

VwVk rkj

December, 2011 Special Precaution to be Taken for Maintenance

of OHE and Attending Break Downs at Sharp Curves
CAMTECH/E/11-12/Spl-Pre for OHE/1.0 5

13- dk;ZLFky ds nksuks vksj O;fDr;ksa dks rSukr

fd;k tkuk pkfg,] tks
dk;Z nyksa dks ml Vªsd
ij ;k cxy ds Vªsd ij
vkus okyh xkfM;ksa dh
psrkouh ns ldsA

14- fo|qrh; Vªsd ij LVhy

;k /kkrq ds rFkk esVy
jh&bUQkslZesaV okys eki
Vsiksa dk Á;ksx u djsaA

15- fo|qrh; Vªsd ij ihohlh

QkbZoj Xykl ekiu Vsi
dk Á;ksx djsaA
.
16- tc fdlh vkbZlksysVj
fLopst esa vfFkZax ghy
yxh gksrh gS] rks vLFkkbZ :i ls nwljh vFkZ
vkbZlksysV ds nksuks rjQ yxuk pkfg,A
Special Precaution to be Taken for Maintenance December, 2011
of OHE and Attending Break Downs at Sharp Curves
6 CAMTECH/E/11-12/Spl-Pre for OHE/1.0

17- U;wVªy 'ksD’ku dks ykbo midj.kksa dh rjg

ekuk tkuk pkfg, rFkk dk;Z ÁkjEHk djus ls
iwoZ] dk;Zny ds nksuks vksj nks vyx vyx
txgksa ij vFkZ djsaA

18- lh<+h ds lkFk esa

mi;ksx dh tkus okyh
jLlh dkVu ;k twV
dh cuh gksuh pkfg,A
/kkrqvksa dh jfLl;ksa dk
Á;ksx euk gSA

19- lHkh deZpkfj;ksa dks nq?kZVuko’k Åij ls fxjus

okyh oLrqvksa o midj.k leku vkfn ls cpus
gsrq flj ij gseysV iguuk pkfg,sA

December, 2011 Special Precaution to be Taken for Maintenance

of OHE and Attending Break Downs at Sharp Curves
CAMTECH/E/11-12/Spl-Pre for OHE/1.0 7

20- rkj ds nks Hkkxksa ;k VwVs gq, rkjksa ds nksuks

fljksa dks nksuks vksj dh lIykbZ can djus ds
ckn vyx vyx LFkkuks ij nks txg vFkZ
djsA ;g lko/kkuh lsD’kfuax IokbaV o dV
bu bUlqysVj ij ;k mlds ikl dk;Z ds
nkSjku Hkh cjruh
pkfg,A

21- LVkQ dks Lo;a dks

Hkwyo’k uhps fxjus ls
jksdus ds fy, lqj{kk
csYV iguuk pkfg,
rkfd mUgs jksi fLyax
dk lgkjk fey ldsA

22- tc fdlh vkblksysVj ij dk;Z djuk gks rks

vkblksysVj ds nksuks fljks dks nks LFkkuks ij
vFkZ djsaA

23- dUMDVj dk mi;ksxh {ks=Qy tksMr+ s le;

de ugha djuk pkfg,A
Special Precaution to be Taken for Maintenance December, 2011
of OHE and Attending Break Downs at Sharp Curves
8 CAMTECH/E/11-12/Spl-Pre for OHE/1.0

24- jfLl;ksa] iqyh] iqy fy¶V] de ,yk¡x DySi]

Mh 'kSdy vkSj VjQj vkfn dks ,lbZ@tsbZ
¼VhvjMh½ dh mifLFkfr esa N% ekg esa ,d ckj
pSd djuk pkfg,] vkSj ÁR;sd fMiks dks bl
VsLV dk fjdkMZ j[kuk pkfg,A

December, 2011 Special Precaution to be Taken for Maintenance

of OHE and Attending Break Downs at Sharp Curves
CAMTECH/E/11-12/Spl-Pre for OHE/1.0 9

25- fQlyus ls jksdus ds fy,

,d O;fDr }kjk tehu ij
lh<+h dks vPNh rjg ls
idM+s jguk pkfg,] tc
fd Åijh fljs dks
liksfVZax LVªDpj ;k rkj
ls cka/k ysuk pkfg, rkdh
Åij ls nk¡;s ck¡;s u
f[kldsA

26- lh<+h dks dHkh Hkh

dkUVsDV ok;j ij u
fxjus nsa vkSj u gh
ml ij fVdk;saA

27- tks LVkWQ ikWoj Cykd dh ek¡x djs mlds

fy, t:jh gS fd mls vks,pbZ ds ml
lsD’ku dh igpku o fooj.k dh lgh
tkudkjh gksuh pkfg, tgk¡ 'kV Mkmu dh
t:jr gSA
Special Precaution to be Taken for Maintenance December, 2011
of OHE and Attending Break Downs at Sharp Curves
10 CAMTECH/E/11-12/Spl-Pre for OHE/1.0

28- dkUVsDV ok;j ij

iSj j[kdj dk;Z u
djsa ftlds
QyLo:i fLoy
fDyi ds chp fdUd
vk tkrk gSA

29- ySMj dks ges’k

dSVujh ok;j ij
ekLV dh rjQ
yxkuk pkfg,A

30- iqy fy¶V vkSj

,DlVsa’ku lhM+h ds
LVSi esa 20@26 C;kl
dk th-vkbZ oksYV
vo’; MkysaA

December, 2011 Special Precaution to be Taken for Maintenance

of OHE and Attending Break Downs at Sharp Curves
CAMTECH/E/11-12/Spl-Pre for OHE/1.0 11

31- tgk¡ rd laHko gks]

lkekU;r% ,d ls
T;knk O;fDr lhM+h
ij u p<+saA

32- xhys ;k fpdus twrksa dks igu dj lhM+h ij

u p<+sA
33- tgk¡ LFkku fooj.k esa 'kadk gks rks ikoj Cykd
ekWxus ckys O;fDr dks dk;Z fd, tkus okys
Vªsd ¼vi ;k MkÅu½ o mu vks,pbZ [kaEcks ds
uEcj Li"V :i ls crkus pkfg, ftuds chp
dk;Z fd;k tkuk gSA

34- dk;Z ds le; <hys

diM+s tSls fd dqrkZ
ik;tkek] yqaxh] lkQh]
pIiy vkfn ugha iguus
pkfg,A
Special Precaution to be Taken for Maintenance December, 2011
of OHE and Attending Break Downs at Sharp Curves
12 CAMTECH/E/11-12/Spl-Pre for OHE/1.0

35- dk;Z ds nkSjku ges’kk

jcj lksy ds twrs
igusA

36- lhM+h ij dk;Z dj jgs O;fDr rd midj.k

;k dksbZ lkeku igq¡pkus gsrq jLlh dk mi;ksx
djsaA

37- VªsfQd CykWd fy, fcuk

jLlh dks jsy ls u
cka/ksA

December, 2011 Special Precaution to be Taken for Maintenance

of OHE and Attending Break Downs at Sharp Curves
CAMTECH/E/11-12/Spl-Pre for OHE/1.0 13

38- lhM+h ij dk;Z ds nkSjku fdlh Hkh O;fDr dks

dk;Z py jgs LFkku ds Bhd uhps [kM+k ugha
gksuk pkfg,A

39- Vuy o iqyks ij dk;Z djrs le; VªsfQd

CykWd vo’; ysaA

40- ftu dUMDVlZ dks vFkZ ugha fd;k tkrk gS

muls fdlh Hkh rjg dk laidZ u djsaA

Special Precaution to be Taken for Maintenance December, 2011

of OHE and Attending Break Downs at Sharp Curves
14 CAMTECH/E/11-12/Spl-Pre for OHE/1.0

41- 'kV MkÅu ,oa

ikoj lIykbZ dks
pkyw djkuk] ijfeV
Vw odZ vkfn ls
laEcf/kr VsyhQksu
ij fn, tkus okys
lHkh lans’kks dks
O;fDrxr uEcj ds
lkFk vknku Ánku
djsa rFkk nks ckj
nksgjk,sA
.

December, 2011 Special Precaution to be Taken for Maintenance

of OHE and Attending Break Downs at Sharp Curves
CAMTECH/E/11-12/Spl-Pre for OHE/1.0 15

çkbosV 'khV u-

42- LVkQ ,VhMh

¼csysal osV½ ds uhps
u cSBsA

Special Precaution to be Taken for Maintenance December, 2011

of OHE and Attending Break Downs at Sharp Curves
16 CAMTECH/E/11-12/Spl-Pre for OHE/1.0

¼c½ 'kkiZ doZ ij czsdMkÅu

vVsUM djrs le; fo’ks"k
lko/kkfu;k¡

December, 2011 Special Precaution to be Taken for Maintenance

of OHE and Attending Break Downs at Sharp Curves
16 CAMTECH/E/11-12/Spl-Pre for OHE/1.0

lqj{kk fu;e

dk;Z dh :i js[kk rS;kj djsaA

dk;Z ds fy, lgh vkStkj Á;ksx djsaA

midj.k dh lIykbZ dks can djsaA

nq?kZVuk dks de djsaA

deZpkjhx.k dks cpk,A

deZpkjhx.k dh ;ksX;rk dk ewY;kadu
djsaA

Åij ds fu;eksa dh fujUrj

f’k{kk nsaA

December, 2011 Special Precaution to be Taken for Maintenance

of OHE and Attending Break Downs at Sharp Curves
CAMTECH/E/11-12/Spl-Pre for OHE/1.0 17

1- fudVorhZ Vªsu ds yksdks ik;ysV dks dk’ku

vkWMj fn;k tk,xk fd og ÁHkkfor lsD’ku@
fdyksehVj ij #dsxk vkSj yEch lhVh ctkrs
gq, vkxs c<+sxkA

2- ÁHkkfor ykbZu ij
dk;Z dj jgs LVkQ
dh cxy okyh
ykbZu ls xqtjus
okyh Vªsuks ls lqj{kk
ds fy, lhVh] >aMh
;k iksjVscy ykmM
Lihdj }kjk lqj{kk
djsaA
.

3- okgjh doZ okyh vks,pbZ dks LywbZax djrs

le; dsVujh ok;j dks 0-8 ¼¾ Vu½ VQZj ls
idM dj j[ksa rkdh ;g ckgj dh rjQ u
tk ldsA

Special Precaution to be Taken for Maintenance December, 2011

of OHE and Attending Break Downs at Sharp Curves
18 CAMTECH/E/11-12/Spl-Pre for OHE/1.0

4- dk;Z 'kq: djus ls igys ;fn vko’;d gks rks

dsVujh vkSj dUVsDV ok;j dk ruko ,VhMh
dks mBk dj de djsaA

5- iqjkuh gks pqdh ,DVsU’ku lhM+h ftldh etcwrh

de gks x;h gks dk Á;ksx djus ls cpsaA
December, 2011 Special Precaution to be Taken for Maintenance
of OHE and Attending Break Downs at Sharp Curves
CAMTECH/E/11-12/Spl-Pre for OHE/1.0 19

6- iqy fy¶V vkSj

,DVsU’ku lhM+h ds
LVsi esa 20@16
C;kl dk th vkbZ
cksYV vo’;
MkysaA

7- nksuks rjg ds doksZ

es dk;Z djus ds
fy, lhM+h dks ges’kk
dsVujh ok;j ij
[kaEcs dh rjQ
yxk,A

8- dkUVsDV vkSj
dsVujh ok;j dh
LiykbZl yxkus
ds fy, Vkoj
oSxu dk Á;ksx
djsaA
Special Precaution to be Taken for Maintenance December, 2011
of OHE and Attending Break Downs at Sharp Curves
20 CAMTECH/E/11-12/Spl-Pre for OHE/1.0

9- vUn:uh doZ esa] fLoy fDyi [kksyus ds nkSjku

;k LVSxj dk
lek;kstu djrs
le; lcls ifgys
dkUVsDV ok;j dk
yksM euhyk jksi ;k
NksVk VQZj 0-8
¼¾Vu½ ls [kaEcs ls
nwj [khp dj de
djsaxsA
10- ckgjh doZ esa fLoy fDyi [kksyus ds nkSjku ;k
LVSxj dk lek;kstu djrs le; lcls
dkUVsDV ok;j dk yksM euhyk jksi ;k NksVk
VQZj 0-8 ¼¾ Vu½ ls [kaEcs dh vksj [khp dj
de djsaA
11- ;fn vk/kh VsU’ku
ysUFk ÁHkkfor gS rks
dsVujh vkSj ,UVh
Øhi ok;j ij
vfrfjDr ihth DySai
yxk dj ,UVh Øhi
dks ykWd djsaA
December, 2011 Special Precaution to be Taken for Maintenance
of OHE and Attending Break Downs at Sharp Curves
CAMTECH/E/11-12/Spl-Pre for OHE/1.0 21

12- vks,pbZ czsd Mkmu esa ;fn tEij ¼th] lh]

,Q½ ruko esa ik, tk, rks ihth DySi [ksyus
ls ifgys 1-5 Vu iqy fy¶V ;k VQZj ij
yksM ys D;ksafd ihth DySi ds vUnj dsVujh
LVªSUMl VwVs gksus dh lEHkkouk gks ldrh gSA

ihth DySEi ihth DySEi ds vUnj ihth DySEi dks [kksyus ls

dSVujh LVªSUM VwVs rks igys #dsa rFkk igys
dks [kksydj
pSd djsa ugha gS dSVujh rkj ds Hkkj dks 1-
1-
5 Vu iqy yh¶V ij ysaA

13- vUn:uh doZ esa fLoy fDyi [kksyrs le;

Vkoj oSxu dh Nr ij [kEcs dh rjQ [kMs
gksus ls cpsA
Special Precaution to be Taken for Maintenance December, 2011
of OHE and Attending Break Downs at Sharp Curves
22 CAMTECH/E/11-12/Spl-Pre for OHE/1.0

14- okgjh doZ dh yksds’ku ij tc czsdV

bUlwysVj VwV x;k gks vkSj lLisU’ku czsdV
,lsEcyh uhps vk x;k gks bl n’kk esa yVds
gq, bUlwysVj ds fgLls ls vkSj czsdV fV;wc ls
isUVksxzkQ my{k ldrk gS¼,d dsl esa QhMj
lhoh fVªfiax ugha gqbZ Fkh tks fd lkekU;r%
gksrh gSA½

December, 2011 Special Precaution to be Taken for Maintenance

of OHE and Attending Break Downs at Sharp Curves
CAMTECH/E/11-12/Spl-Pre for OHE/1.0 23

 uksV 

Special Precaution to be Taken for Maintenance December, 2011

of OHE and Attending Break Downs at Sharp Curves
24 CAMTECH/E/11-12/Spl-Pre for OHE/1.0

lanHkZ

1- ,lh d"kZ.k fu;ekoyh vuqj{k.k ,oa

ifjpkyu ftYn&2 ¼Hkkx 1½

2- fofHkUu VhvkjMh fMiksa esa dk;Z{ks=ksa

dk vuqj{k.kA

3- fnuk¡d 08 tqykbZ 2011 dks

vk;ksftr lseukj esa fn, lq>koA

December, 2011 Special Precaution to be Taken for Maintenance

of OHE and Attending Break Downs at Sharp Curves
CAMTECH/E/11-12/Spl-Pre for OHE/1.0 25

gekjk
gekjk mn~ns’;
vuqj{k.k izkS|ksfxdh vkSj dk;Ziz.kkyh dks
mUu;u djuk rFkk mRikndrk vkSj
jsyos dh ifjlEifRr ,oa tu’kfDr ds
fu"iknu esa lq/kkj djuk ftlls
vUrfoZ"k;ksa esa fo’oluh;rk] mi;ksfxrk
vkSj n{krk izkIr dh tk ldsA

;fn vki bl lanHkZ esa dksbZ fopkj vkSj fo’ks"k lq>ko

nsuk pkgrs gksa rks d`Ik;k gesa bl irs ij fy[ksaA

laidZ lw= % funs’kd ( fo|qr )

Ik=kpkj dk irk % Hkkjrh; jsy
mPp vuqj{k.k izkS|ksfxdh dsUnz]
egkjktiqj] Xokfy;j e- iz-
fiudksM 474 005
Qksu % 0751&2470803
0751&2470740
QSDl % 0751&2470841
bZ&esy : direlcamtech@gmail.com
Special Precaution to be Taken for Maintenance December, 2011
of OHE and Attending Break Downs at Sharp Curves
26 CAMTECH/E/11-12/Spl-Pre for OHE/1.0

Lej.k jgs

thou vewY; gS

ONE CAN ENFORCE SAFETY IN

WORK PRACTICES, HOWEVER
A DEVELOPED CULTURE OF SAFETY
WITHIN THE ORGANIZATION IS
HELPFUL IN PREVENTING
ACCIDENTS.

Hkkjrh; jsy
mPp vuqj{k.k çkS|ksfxdh dsUnz
December, 2011 Special Precaution to be Taken for Maintenance
egkjktiqjk] Xokfy;j 474 005
of OHE and Attending Break Downs at Sharp Curves