Amendment_10_-_KC46_BOT_-_Specs.pdf

USACE NYD JB MDL 695847

Revi s i on 4

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BRI DGE CRANES, OVERHEAD ELECTRI C, TOP RUNNI NG

04/08

PART 1 GENERAL

1. 1 REFERENCES

The publ i cat i ons l i s t ed bel ow f or m a par t of t hi s speci f i cat i on t o t he ext ent r ef er enced. The publ i cat i ons ar e r ef er r ed t o wi t hi n t he t ext by t he basi c desi gnat i on onl y.

AMERI CAN GEAR MANUFACTURERS ASSOCI ATI ON ( AGMA)

AGMA I SO 10064- 6 ( 2010A) Code of I nspect i on Pr act i ce - Par t 6: Bevel Gear Measur ement Met hods

ANSI / AGMA 2001 ( 2004D; R 2010) Fundament al Rat i ng Fact or s and Cal cul at i on Met hods f or I nvol ut e Spur and Hel i cal Gear Teet h

ANSI / AGMA 6013 ( 2006A; R 2011) St andar d f or I ndust r i al Encl osed Gear Dr i ves

AMERI CAN I NSTI TUTE OF STEEL CONSTRUCTI ON ( AI SC)

AI SC 325 ( 2017) St eel Const r uct i on Manual

AMERI CAN WELDI NG SOCI ETY ( AWS)

AWS D1. 1/ D1. 1M ( 2015; Er r at a 1 2015; Er r at a 2 2016) St r uct ur al Wel di ng Code - St eel

AWS D14. 1/ D14. 1M ( 2005; Amd 1 2017) Speci f i cat i on f or Wel di ng of I ndust r i al and Mi l l Cr anes and Ot her Mat er i al Handl i ng Equi pment

ASME I NTERNATI ONAL ( ASME)

ASME B30. 10 ( 2014) Hooks

ASME B30. 2 ( 2017) Over head and Gant r y Cr anes ( Top Runni ng Br i dge, Si ngl e or Mul t i pl e Gi r der , Top Runni ng Tr ol l ey Hoi st )

ASTM I NTERNATI ONAL ( ASTM)

ASTM A1023/ A1023M ( 2015) St andar d Speci f i cat i on f or St r anded Car bon St eel Wi r e Ropes f or Gener al Purposes

ASTM A668/ A668M ( 2017) St andar d Speci f i cat i on f or St eel For gi ngs, Car bon and Al l oy, f or Gener al I ndust r i al Use

ASTM A931 ( 2008; R 2013) St andar d Test Met hod f or Tensi on Test i ng of Wi r e Ropes and St r and

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CRANE MANUFACTURERS ASSOCI ATI ON OF AMERI CA ( CMAA)

CMAA 70 ( 2015) Speci f i cat i on f or Top Runni ng Br i dge and Gant r y Type Mul t i pl e Gi r der El ect r i c Over head Tr avel i ng Cr anes

NATI ONAL ELECTRI CAL MANUFACTURERS ASSOCI ATI ON ( NEMA)

NEMA 250 ( 2014) Encl osur es f or El ect r i cal Equi pment ( 1000 Vol t s Maxi mum)

NEMA I CS 3 ( 2005; R 2010) Medi um- Vol t age Cont r ol l er s Rat ed 2001 t o 7200 V AC

NEMA I CS 6 ( 1993; R 2016) I ndust r i al Cont r ol and Syst ems: Encl osur es

NEMA I CS 8 ( 2011) Cr ane and Hoi st Cont r ol l er s

NEMA MG 1 ( 2016; SUPP 2016) Mot or s and Gener at or s

NATI ONAL FI RE PROTECTI ON ASSOCI ATI ON ( NFPA)

NFPA 70 ( 2017; ERTA 1- 2 2017; TI A 17- 1; TI A 17- 2;

TI A 17- 3; TI A 17- 4; TI A 17- 5; TI A 17- 6;

TI A 17- 7; TI A 17- 8; TI A 17- 9; TI A 17- 10;

TI A 17- 11; TI A 17- 12; TI A 17- 13; TI A

17- 14) Nat i onal El ect r i cal Code

U. S. NATI ONAL ARCHI VES AND RECORDS ADMI NI STRATI ON ( NARA)

29 CFR 1910 Occupat i onal Saf et y and Heal t h St andar ds

29 CFR 1910. 147 The Cont r ol of Hazar dous Ener gy ( Lock Out / Tag Out )

29 CFR 1910. 179 Over head and Gant r y Cr anes

29 CFR 1910. 306 Speci f i c Pur pose Equi pment and Installations

UNDERWRI TERS LABORATORI ES ( UL)

UL 1004- 1 ( 2012; Repr i nt Aug 2017) UL St andar d f or Saf et y Rot at i ng El ect r i cal Machi nes - Gener al Requi r ement s

UL 1449 ( 2014; Repr i nt Jul 2017) UL St andar d f or Saf et y Sur ge Pr ot ect i ve Devi ces

UL 489 ( 2016) UL St andar d f or Saf et y Mol ded- Case Ci r cui t Br eaker s, Mol ded- Case Swi t ches and Ci r cui t - Br eaker Encl osur es

UL 50 ( 2015) UL St andar d f or Saf et y Encl osur es f or El ect r i cal Equi pment , Non- Envi r onment al Consi der at i ons

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UL 943 ( 2016; Repr i nt Feb 2018) UL St andar d f or Saf et y Gr ound- Faul t Ci r cui t - I nt er r upt er s

1. 2 REFERENCE DRAWI NGS

The r ef er ence dr awi ng number s AF- 171- 212- 01 Pl at es S4 and S6 pr ovi ded i n t he i ni t i al dr awi ng package cont ai n exi st i ng st r uct ur al st eel i nf or mat i on.

I nf or mat i on and addi t i onal cr ane suppl i er r equi r ement s ar e cont ai ned on dr awi ng S- 403, Cr ane Runway Pl ans, Sect i ons and Det ai l s .

1. 3 DEFINITIONS

a. Cr ane Br i dge: That par t of an over head cr ane syst em consi st i ng of gi r der ( s) , end t r ucks, end t i es, wal kway, and dr i ve mechani sm whi ch car r i es t he t r ol l ey( s) and t r avel s al ong t he r unway r ai l s par al l el t o t he r unway.

b. Cr ane Runway: The t r ack syst em al ong whi ch t he cr ane oper at es hor i zont al l y , i ncl udi ng t r ack hangar r ods, t r ack connect i on devi ces, and r unway st r uct ur al suppor t s.

c. Dead Loads: The l oads on a st r uct ur e whi ch r emai n i n a f i xed posi t i on r el at i ve t o t he st r uct ur e.

d. Gi r der : The pr i nci pal hor i zont al beam of t he cr ane br i dge. I t i s suppor t ed by t he cr ane end t r ucks.

e. Li ve Load: A l oad whi ch moves r el at i ve t o t he st r uct ur e under consideration.

f . Pendant : A cont r ol f or a hoi st and/ or a cr ane. The pendant hangs f r om t he hoi st or t he cr ane by a cabl e at a hei ght t hat i s easy f or t he oper at or t o r each.

g. Rat ed Load: For t he pur pose of t hi s speci f i cat i on t he r at ed l oad i s def i ned as t he maxi mum wor ki ng l oad suspended under t he l oad hook.

h. St andar d Commer ci al Cat al oged Pr oduct : A pr oduct whi ch i s cur r ent l y bei ng sol d, or pr evi ousl y has been sol d, i n subst ant i al quant i t i es t o t he gener al publ i c, i ndust r y or Gover nment i n t he cour se of nor mal busi ness oper at i ons. Model s, sampl es, pr ot ot ypes or exper i ment al uni t s do not meet t hi s def i ni t i on. The t er m " cat al oged" as speci f i ed i n t hi s sect i on i s def i ned as " appear i ng" on t he manuf act ur er ' s publ i shed pr oduct dat a sheet s. These dat a sheet s must have been publ i shed or copyr i ght ed pr i or t o t he i ssue dat e of t hi s sol i c i t at i on and have a document i dent i f i cat i on number or bul l et i n number .

i . Top Runni ng Cr ane: An el ect r i c over head t r avel i ng cr ane t hat r uns on r ai l s on t op of suppor t gi r der s.

j . Tr ol l ey Mount ed Hoi st : A combi ned uni t consi st i ng of a wheel ed t r ol l ey t hat pr ovi des hor i zont al mot i on al ong t he br i dge gi r der , and a hoi st suppor t ed by t he t r ol l ey, t hat pr ovi des l i f t i ng and l ower i ng of a f r eel y suspended l oad.

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1. 4 REQUIREMENTS

The r equi r ement s f or t he cr ane r unway syst em and r ai l suppor t i ng st r uct ur es ar e speci f i ed i n Sect i on 05 12 00, STRUCTURAL STEEL, and must conf or m t o

AI SC 325.

1. 5 VERI FI CATI ON OF DI MENSI ONS

The Cont r act or i s r esponsi bl e f or t he coor di nat i on and pr oper r el at i on of hi s wor k t o t he bui l di ng st r uct ur e, exi st i ng cr ane gi r der s and t o t he wor k of al l t r ades. Ver i f y al l di mensi ons of t he bui l di ng and cr ane st r uct ur e t hat r el at e t o f abr i cat i on of t he cr ane and not i f y t he Cont r act i ng Of f i cer of any di scr epancy bef or e f i nal i z i ng t he cr ane or der . Cont r act or i s r esponsi bl e t o eval uat e t he exi st i ng cr ane r unway and el ect r i cal component s and t o i ncl ude r equi r ed upgr ades.

1. 6 SUBMITTALS

Gover nment appr oval i s r equi r ed f or submi t t al s wi t h a " G" desi gnat i on;

submi t t al s not havi ng a " G" desi gnat i on ar e f or i nf or mat i on onl y. When used, a desi gnat i on f ol l owi ng t he " G" desi gnat i on i dent i f i es t he of f i ce t hat wi l l r evi ew t he submi t t al f or t he Gover nment . Submi t t al s wi t h an " S" ar e f or i ncl usi on i n t he Sust ai nabi l i t y eNot ebook, i n conf or mance t o Sect i on 01 33 29 SUSTAI NABI LI TY REPORTI NG. Submi t t he f ol l owi ng i n accor dance wi t h Sect i on 01 33 00 SUBMI TTAL PROCEDURES:

SD- 02 Shop Dr awi ngs

Over head el ect r i c cr ane; G

Cr ane Runway End St ops; G

SD- 03 Pr oduct Dat a

Gear Reducer s; G

Hook; G

Tr ol l ey; G

Hoi st ; G

Cont r ol s; G

Coupl i ngs; G

Pendant pushbut t on st at i on; G

El ect r i f i cat i on; G

Mot or s; G

Br akes; G

Capaci t y Over l oad Pr ot ect i ve Devi ce; G

Li mi t Swi t ches; G

SD- 05 Desi gn Dat a

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Load and si z i ng cal cul at i ons; G

Cr ane Runway End St op Cal cul at i ons; G

SD- 06 Test Repor t s

Hook and hook nut magnet i c- par t i c l e Test s; G

Wi r e r ope br eaki ng st r engt h; G

Post - er ect i on i nspect i on; G

Oper at i onal Test s; G

Hook Pr oof Test ; G

Hook Tr am Measur ement ; G

No- l oad Test ; G

Load Test s; G

SD- 07 Cer t i f i cat es

Over l oad Test Cer t i f i cat e; G

Loss of Power ( Pani c Test ) Cer t i f i cat e; G

Hazar dous Mat er i al Cer t i f i cat e; G

Cer t i f i cat e of t he Coupl i ng Al i gnment Ver i f i cat i on Recor d; G

Br ake Set t i ng Recor d; G

Cer t i f i cat e of Compl i ance wi t h Li st ed St andar ds; G

SD- 10 Oper at i on and Mai nt enance Dat a

Over head el ect r i c cr ane; G

Dat a Package 3; G

Submi t i n accor dance wi t h Sect i on 01 78 23 OPERATI ON AND MAI NTENANCE DATA, i ncl udi ng weekl y, mont hl y, semi - annual , and annual r equi r ed mai nt enance i t ems.

1. 7 QUALI TY ASSURANCE

1. 7. 1 Manuf act ur er Qual i f i cat i on

Over head el ect r i c cr ane syst em, i ncl udi ng sub- syst em component s manuf act ur ed by vendor s, must be desi gned and manuf act ur ed by a company wi t h a mi ni mum of 10 year s of speci al i zed exper i ence i n desi gni ng and manuf act ur i ng t he t ype of over head cr ane r equi r ed t o meet r equi r ement s of t he Cont r act Document s.

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1. 7. 2 Pr e- Del i ver y I nspect i ons

Cont r act or i s r esponsi bl e f or per f or mance of qual i t y cont r ol i nspect i ons, t est i ng and document at i on of st eel cast i ngs, hook assembl y and t r ol l ey as follows.

1. 7. 2. 1 I nspect i on of St eel Cast i ngs

Vi sual l y i nspect l oad- car r y i ng st eel cast i ngs. Al l l oad bear i ng component s, coupl i ngs, shaf t s, and gear s, i n t he hoi st dr i ve t r ai n must be r ol l ed or f or ged st eel , except br ake dr ums whi ch may be duct i l e i r on. Met hods of r epai r i ng t he di scont i nui t i es i s subj ect t o r evi ew by t he Cont r act i ng Officer.

1. 7. 2. 2 I nspect i on of Hook Assembl y

I nspect hook and nut pr i or t o del i ver y. Fur ni sh document at i on of hook i nspect i on t o Cont r act i ng Of f i cer pr i or t o f i el d oper at i onal t est i ng. As par t of t he accept ance st andar d, l i near i ndi cat i ons gr eat er t han 1/ 16 i nch ar e not al l owed. Wel di ng r epai r s of hook ar e not per mi t t ed. A hook showi ng l i near i ndi cat i ons, damage or def or mat i on i s not accept abl e and must be r epl aced i mmedi at el y.

1. 7. 2. 3 Hook Pr oof Test

Pr oof t est t he l oad hook per ASME B30. 10.

1. 7. 3 Certificates

Submi t an Over l oad Test Cer t i f i cat e st at i ng t hat t he cr ane can be per i odi cal l y l oad t est ed t o 125 per cent ( pl us 5 mi nus 0) of r at ed l oad.

Submi t a Loss of Power ( Pani c Test ) Cer t i f i cat e st at i ng t hat a t est may be per f or med i n whi ch power i s r emoved f r om t he cr ane whi l e t he hoi st , br i dge, and t r ol l ey ar e i n oper at i on t o s i mul at e a l oss of power .

Submi t a Hazar dous Mat er i al Cer t i f i cat e t hat t he cr ane does not cont ai n hazar dous mat er i al , asbest os, l ead, cadmi um, chr omi um, PCBs or el ement al mercury.

Submi t a Cer t i f i cat e of Compl i ance wi t h Li st ed St andar ds.

Submi t a Cer t i f i cat e of t he Coupl i ng Al i gnment Ver i f i cat i on Recor d.

Submi t a Cer t i f i cat e of t he Br ake Set t i ng Recor d

1. 7. 4 Dr awi ngs: Over head El ect r i c Cr ane

Submi t shop dr awi ngs showi ng t he gener al ar r angement of al l component s i n pl an, el evat i on, and end vi ews; cr ane r unway end st ops; hook appr oaches on al l f our s i des, c l ear ances and pr i nci pal di mensi ons, assembl i es of hoi st , t r ol l ey and br i dge dr i ves, mot or namepl at e dat a, over cur r ent pr ot ect i ve devi ce r at i ngs, and el ect r i cal schemat i c dr awi ngs i ncl udi ng l ocal equi pment di sconnect , equi pment c i r cui t , and al l associ at ed cont r ol s, i n condui t , f or a compl et e and oper at i onal syst em. I ncl ude wei ght s of component s and maxi mum br i dge wheel l oads and spaci ng.

Shop dr awi ng qual i t y must be equi val ent t o t he cont r act dr awi ngs accompanyi ng t hi s sol i c i t at i on. Dr awi ngs must be r evi ewed, s i gned and

SECTI ON 41 22 13. 14 Page 6 seal ed by a r egi st er ed pr of essi onal engi neer .

Pr ovi de i nt egr al schedul e of cr ane component s on each dr awi ng. Pr ovi de maxi mum wheel l oads ( wi t hout i mpact ) and spaci ng i mpar t ed t o t he cr ane r unway syst em t r ack beams. I ndi cat e t he cr ane speeds al ong t he r unway, t he t r ol l ey speeds al ong t he br i dge gi r der , and t he hoi st l i f t i ng speeds; al l speeds i ndi cat ed ar e speeds wi t h hoi st l oaded wi t h r at ed cr ane capaci t y load.

1. 7. 5 Desi gn Dat a: Load and Si z i ng Cal cul at i ons

Submi t cal cul at i ons r evi ewed, s i gned and seal ed by a r egi st er ed pr of essi onal engi neer ver i f y i ng t he s i z i ng of t he br i dge gi r der , end t r ucks, cr ane r unway end st ops, t r avel dr i ves, and over cur r ent pr ot ect i on f or mot or s, cont r ol l er s, and br anch ci r cui t s. I nc l ude sei smi c anal ysi s of br i dge gi r der and end t r ucks.

1. 7. 6 Wel di ng Qual i f i cat i ons and Pr ocedur es

Wel di ng must be i n accor dance wi t h qual i f i ed pr ocedur es usi ng AWS D14. 1/ D14. 1M as modi f i ed. Wr i t t en wel di ng pr ocedur es must speci f y t he Cont r act or ' s st andar d di mensi onal t ol er ances f or devi at i on f r om camber and sweep and not exceed t hose speci f i ed i n AWS D14. 1/ D14. 1M and CMAA 70.

Wel der s and wel di ng oper at or s must be qual i f i ed i n accor dance wi t h AWS D1. 1/ D1. 1M or AWS D14. 1/ D14. 1M. Al l owabl e st r ess val ues must compl y wi t h CMAA 70.

1. 8 CRANE SAFETY

Compl y wi t h t he mandat or y and advi sor y saf et y r equi r ement s of ASME B30. 10, and NFPA 70. Submi t dat a on Capaci t y Over l oad Pr ot ect i ve Devi ce

PART 2 PRODUCTS

2. 1 TOP RUNNI NG CRANE SYSTEM

Pr ovi de t op r unni ng over head el ect r i c t r avel i ng ( OET) cr anes conf or mi ng t o CMAA 70, Cl ass C ( Moder at e Ser vi ce) f or i ndoor ser vi ce, ASME B30. 2, wi t h a ver t i cal l i f t of 36 f eet and as speci f i ed her ei n. The cr ane span must mat ch t he exi st i ng span and be desi gned t o oper at e i n an ambi ent t emper at ur e bet ween 40 degr ees F and 80 degr ees F degr ees Fahr enhei t .

Submi t Over head el ect r i c cr ane, Dat a Package 3, i ncl udi ng r ecommended mai nt enance i t ems on a weekl y, mont hl y, semi - annual , and annual basi s.

2. 1. 1 Capacity

Pr ovi de a cr ane wi t h a mi ni mum r at ed capaci t y of 2. 5 t on. Mar k t he r at ed capaci t y i n bot h k i l ogr am and pound uni t s pr i nt ed i n di f f er ent col or s on bot h s i des of t he cr ane on t he br i dge gi r der s. Capaci t y mar ks must be c l ear l y v i s i bl e t o t he oper at or at gr ound l evel .

2. 1. 2 Speeds

OET cr ane must have t he f ol l owi ng f ul l l oad speeds ( pl us or mi nus 10 percent):

a. Hoi st - r at ed speed of 20 f eet per mi nut e

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b. Tr ol l ey - r at ed speed of 120 f eet per mi nut e

c. Br i dge - r at ed speed of 150 f eet per mi nut e

2. 1. 3 Hoist

Pr ovi de hoi st conf or mi ng t o ASME B30. 2 and CMAA 70 Cl ass C or bet t er , doubl e r eeved, except as modi f i ed and suppl ement ed i n t hi s sect i on. Equi p hoi st wi t h a spr i ng set , el ect r o- mechani cal l y r el eased br ake pl us a mechani cal l oad br ake.

2. 1. 4 Cr ane Saf et y

Compl y wi t h t he mandat or y and advi sor y saf et y r equi r ement s of ASME B30. 2, CMAA 70, 29 CFR 1910. 147, 29 CFR 1910. 179, 29 CFR 1910. 306, and al l appl i cabl e pr ovi s i ons of 29 CFR 1910 and NFPA 70.

2. 2 STRUCTURAL REQUI REMENTS

St r uct ur al r equi r ement s must be i n accor dance wi t h CMAA 70, Sect i on 3.

2. 2. 1 Sei smi c For ces ( SF)

Consi der sei smi c f or ces i n t he desi gn of t he cr ane.

2. 3 MECHANI CAL EQUI PMENT

Pr ovi de st eel shaf t s, gear s, keys, and coupl i ngs. Cast i r on and al umi num used t o suppor t component s of t he hoi st power t r ansmi ssi on t r ai n must be ductile.

Al l bear i ngs, except t hose subj ect onl y t o smal l r ocker mot i on, must be ant i f r i c t i on t ype.

2. 3. 1 Drives

2. 3. 1. 1 Br i dge Dr i ves

Br i dge dr i ves must be ei t her t he A- 1 or A- 4 dr i ve ar r angement as speci f i ed in CMAA 70.

Accel er at i on and decel er at i on must meet t he r equi r ement s speci f i ed i n t hi s sect i on. Gear s must conf or m t o appl i cabl e AGMA st andar ds. Pr ovi de oi l t i ght f ul l y encl osed gear r educer s wi t h pr essur e or spl ash t ype l ubr i cat i on. Br i dge- t r avel l i mi t - swi t ches ar e opt i onal . Submi t pr oduct dat a on i nver t er dr i ves and cont r ol par amet er set t i ngs.

2. 3. 1. 2 Tr ol l ey Dr i ves

Pr ovi de t r ol l ey compl et e wi t h a dr i ve ar r angement wi t h a mi ni mum of t wo wheel s dr i ven by an i nt egr al el ect r i c mot or . Dr i ve mechani sm must r un i n t ot al l y encl osed oi l bat h. Li mi t swi t ches ar e opt i onal f or dr i ve mechani sm. Accel er at i on and decel er at i on cont r ol s must meet r equi r ement s speci f i ed i n t hi s sect i on.

2. 3. 2 Load Bl ock and Hook Assembl y

Const r uct t he l oad bl ock of st eel . Pr ovi de an unpai nt ed s i ngl e bar bed f or ged st eel hook compl yi ng wi t h ASTM A668/ A668M. Hook di mensi ons must be

SECTI ON 41 22 13. 14 Page 8 bet ween t he f l oor l evel and 34 f eet above t he f l oor . The cr ane and r el at ed component s must r esi de above t he upper l i mi t , al l owi ng t he cr ane hook t o l i f t a s i ngl e i t em t o t he f ul l 34 f oot hei ght . . Fi t hook wi t h saf et y l at ches desi gned t o pr ecl ude i nadver t ent di spl acement of s l i ngs f r om t he hook saddl e. Pr ovi de hook nut wi t h a r emovabl e t ype set scr ew or ot her s i mi l ar f ast ener , i nst al l ed i n a pl ane par al l el t o t he l ongi t udi nal axi s of t he hook shank. Do not wel d hook nut . Hook must be f r ee t o r ot at e t hr ough 360 degr ees when suppor t i ng t he t est l oad up t o 131. 25 per cent of t he r at ed capaci t y. Pr ovi de onl y hooks whi ch ar e desi gned and commer ci al l y r at ed i n accor dance wi t h CMAA and conf or mi ng t o ASME B30. 10, and CMAA 70.

2. 3. 3 Hoi st i ng Ropes

Wi r e r opes must conf or m t o ASTM A1023/ A1023M and be t est ed as r equi r ed by ASTM A931. Pr ovi de 6 by 37 c l ass const r uct i on hoi st i ng r opes, wi t h i mpr oved or ext r a i mpr oved pl ow st eel , as a mi ni mum, and an i ndependent wi r e r ope cor e. Maxi mum hoi st i ng r ope f l eet angl es must be 4 degr ees f or dr ums and 4. 75 degr ees f or sheaves. Hoi st i ng r ope end connect i ons, ot her t han dr um connect i ons, must be spel t er ed socket s wi t h f or ged st eel t er mi nal s or swaged f i t t i ngs i nst al l ed i n a f ashi on t hat pr ovi des 100 per cent of t he br eaki ng st r engt h of t he wi r e r ope. Pr ovi de pr oof of wi r e r ope br eaki ng st r engt h. Wedge socket s or al umi num swages ar e not per mi t t ed on wi r e r ope end connect i ons.

2. 3. 4 Sheaves

Pr ovi de st eel sheaves. Mi ni mum pi t ch di amet er s must be 18 t i mes t he r ope di amet er f or r unni ng sheaves, and 12 t i mes t he r ope di amet er f or equal i zer sheaves. Sheave sur f aces whi ch cont act wi r e r ope ar e not t o be pai nt ed.

2. 3. 5 Hoi st Dr um

Pr ovi de dr um made of st eel . Desi gn dr um so t hat not l ess t han t wo dead wr aps of hoi st i ng r ope r emai n on each anchor age when t he hook i s i n i t s ext r eme l ow posi t i on. Dr um gr oovi ng must be r i ght and l ef t hand begi nni ng at t he ends and gr oovi ng t owar d t he cent er of t he dr um. Mi ni mum dr um gr oove dept h, must be 0. 375 t i mes t he r ope di amet er . Mi ni mum dr um gr oove pi t ch must be ei t her 1. 14 t i mes t he r ope di amet er , or t he r ope di amet er pl us 1/ 8 i nch, whi chever i s smal l er . Mi ni mum dr um pi t ch di amet er must be 18 t i mes t he r ope di amet er . Do not pai nt , coat , or gal vani ze t he sur f ace of t he dr um whi ch comes i n cont act wi t h wi r e r ope.

For wi r e r ope dr ums i nst al l ed di r ect l y ont o t he out put shaf t of t he hoi st speed r educer wi t hout an i nt er medi at e f l exi bl e coupl i ng, t he dr um t o shaf t connect i on must be a bar r el coupl i ng.

2. 3. 6 Gearing

Pr ovi de gear i ng of t he encl osed gear r educer s t ype. Pr ovi de spur , hel i cal , or her r i ngbone t ype gear s and pi ni ons onl y, f or ged, cast or r ol l ed st eel .

Open- t ype gear i ng i s not accept abl e, except f or f i nal dr i ves. Gear s and pi ni ons must have adequat e st r engt h and dur abi l i t y f or t he cr ane ser vi ce c l ass and be manuf act ur ed t o ANSI / AGMA 2001 Qual i t y Cl ass 6 or bet t er pr eci s i on per AGMA I SO 10064- 6.

2. 3. 7 Gear Reducer s

Gear r educer s must be st andar d i t ems of manuf act ur er s r egul ar l y engaged i n t he desi gn and manuf act ur e of gear r educer s f or i nt egr al component s of

SECTI ON 41 22 13. 14 Page 9 st andar d hoi st s or hoi st / t r ol l ey uni t s of manuf act ur er s r egul ar l y engaged i n t he desi gn and manuf act ur e of hoi st s or hoi st / t r ol l ey uni t s f or Cl ass A, B or C cr anes. Gear r educer s must be desi gned, manuf act ur ed and r at ed i n accor dance wi t hANSI / AGMA 6013 ( f or t r ol l ey dr i ves onl y) , as appl i cabl e.

Except f or f i nal r educt i on, t he gear r educt i on uni t s must be f ul l y encl osed i n oi l - t i ght housi ng. Gear i ng must be desi gned t o AGMA st andar ds and oper at e i n an oi l bat h. Oper at i on must be smoot h and qui et .

2. 3. 8 Open Gear i ng

Pr ovi de al l gear s and pi ni ons wi t h adequat e st r engt h and dur abi l i t y f or t he cr ane ser vi ce c l ass and manuf act ur ed t o ANSI / AGMA 2001 qual i t y c l ass 6 or bet t er pr eci s i on per AGMA I SO 10064- 6. Open gear s must be encl osed wi t h saf et y guar ds pr ovi ded wi t h openi ngs wi t h cover s f or i nspect i on and access f or gr ease l ubr i cat i on.

2. 3. 9 Wheels

Pr ovi de doubl e f l anged t r ol l ey and br i dge t r avel wheel s of r ol l ed- t o- shape wr ought or f or ged st eel . Ri m t oughen wheel s t o not l ess t han 320 Br i nel l Har dness Number ( BHN) . Wheel s i z i ng and f l ange- t o- r ai l head cl ear ances must be i n accor dance wi t h CMAA 70 r ecommendat i ons. Conf i r m exi st i ng cr ane r unway r ai l s i ze and pr ovi de br i dge t r avel wheel s t o mat ch exi st i ng r ai l size.

2. 3. 10 Br i dge and Tr ol l ey Br akes

Pr ovi de br i dge and t r ol l ey dr i ves wi t h el ect r o- mechani cal br akes capabl e of st oppi ng t he mot i on of t he br i dge or t r ol l ey wi t hi n a di st ance i n f eet equal t o 10 per cent of t he f ul l l oad speed i n f eet per mi nut e when t r avel i ng at f ul l speed wi t h a f ul l l oad. Br akes must have an ext er nal l y accessi bl e means t o manual l y def eat t he br ake.

2. 3. 11 Hoi st Br akes

Equi p hoi st wi t h bot h a spr i ng set , el ect r o- mechani cal l y or t hr ust er r el eased shoe or di sc br ake, pl us a mechani cal l oad br ake. The mechani cal l oad br ake and t he el ect r o- mechani cal or t hr ust er br ake must each, i ndependent l y, s t op and hol d 131. 25 per cent of r at ed capaci t y. The el ect r o- mechani cal or t hr ust er br ake must be adj ust abl e t o 50 per cent of i t s r at ed capaci t y and must have an ext er nal l y accessi bl e means of manual release.

2. 3. 12 Bumpers

Pr ovi de bumper s on t he br i dge and t r ol l ey per CMAA 70 gui del i nes. Consi der t ype of br i dge bumper f or desi gn of cr ane r unway end st ops.

2. 3. 13 End Tr ucks

Conf i gur e br i dge and t r ol l ey t r ucks wi t h a f eat ur e t hat l i mi t s l oad movement t o 1" i n t he event of wheel or shaf t f ai l ur e.

2. 4 ELECTRI CAL COMPONENTS

2. 4. 1 Motors

Mot or s must meet al l appl i cabl e r equi r ement s of NEMA MG 1and UL 1004- 1.

Pr ovi de i nsul at ed i nver t er dut y mot or s f or Var i abl e Fr equency Dr i ves

SECTI ON 41 22 13. 14 Page 10

( VFD) . Mot or i nsul at i on must be Cl ass H, but wi t h a Cl ass B t emper at ur e r i se. Pr ovi de t wo speed, AC squi r r el cage i nduct i on t ype mot or f or t he hoi st . Pr ovi de Cl ass F mot or i nsul at i on f or mot or s wi t h magnet i c cont r ol s. Pr ovi de mot or over l oad pr ot ect i on ut i l i z i ng a t her mal sensi t i ve devi ce embedded i n i t s wi ndi ngs.

2. 4. 2 Controls

Pr ovi de st at i c r ever si ng, adj ust abl e f r equency cont r ol l er s f or t he , br i dge and t r ol l ey el ect r i c dr i ves. Pr ovi de dynami c br aki ng f or al l el ect r i c dr i ves. Speed cont r ol must be of t he t wo st ep i nf i ni t el y var i abl e t ype f or t he br i dge and t r ol l ey f unct i ons. The t r ol l ey and br i dge br akes must set onl y af t er t he associ at ed cont r ol l er decel er at es t he mot or t o a cont r ol l ed st op. Al l mot or s must r un smoot hl y, wi t hout t or que pul sat i ons at t he l owest speed and be ener gi zed at a f r equency not exceedi ng 60 HZ at t he hi ghest speed.

" Pr ovi de t wo- speed magnet i c cont r ol s f or t he hoi st dr i ve. Ensur e t hat an ener gi zed dr i ve mot or i ni t i al l y r ot at es onl y i n t he di r ect i on sel ect ed by t he oper at or by act i vat i ng t he cor r espondi ng di r ect i on; i . e. , i s not over haul ed. The mot or cont r ol syst ems must be pr ovi ded wi t h r esi st i ve or r eact i ve r educed vol t age st ar t i ng, accel er at i on, and decel er at i on ut i l i z i ng, f or each, separ at e banks of vol t age r educi ng r esi st or s or r eact or s and t i mi ng r el ays.

On decel er at i on, r esi st or s or r eact or s must be i nser t ed i nt o t he mot or ' s hi gh speed l eads pr i or t o de ener gi zat i on of t he hi gh speed cont act or .

Accel er at i on and decel er at i on must be smoot h. The use of def i ni t e pur pose cont act or s i s pr ohi bi t ed. Al l cont act or s must be NEMA r at ed.

Feed cont r ol c i r cui t s f r om a s i ngl e phase, ai r cool ed, doubl e wound t r ansf or mer wi t h a gr ounded met al scr een bet ween t he pr i mar y and secondar y wi ndi ngs of t he t r ansf or mer

2. 4. 3 Protection

Pr ot ect i on must not be l ess t han t hat r equi r ed by NEMA I CS 3, NEMA I CS 8, CMAA 70, NFPA 70, UL 1004- 1, UL 1449, UL 489, UL 50, UL 943, 29 CFR 1910. 147, 29 CFR 1910. 179, 29 CFR 1910. 306 and al l appl i cabl e pr ovi s i ons of 29 CFR 1910. Pr ovi de encl osed t ype c i r cui t br eaker r eadi l y accessi bl e t o t he cr ane oper at or f or cr ane di sconnect . Pr ovi de an On/ Of f but t on t hat r emoves power f r om t he mot or s, br akes and cont r ol c i r cui t on t he oper at or ' s cont r ol pendant st at i on or r adi o cont r ol l er . Pr ovi de f or l ockout / t agout of al l hazar dous ener gy sour ces.

2. 4. 4 Resistors

Pr ovi de r esi st or s r at ed f or cont i nuous dut y oper at i on based upon 125 per cent of t he mot or namepl at e amper es and f abr i cat ed of cor r osi on r esi st ant met al ; t he use of " wi r e wound" t ype r esi st or s i s pr ohi bi t ed f or segment s of 8 ohms or l ess. Mount r esi st or s i n subst ant i al , vent i l at ed encl osur es const r uct ed ent i r el y of non- combust i bl e mat er i al s. Pr ovi de r esi st or s wi t h t er mi nal s f i t t ed i n t he cool est posi t i on i n t he encl osur e.

2. 4. 5 Reactors

Pr ovi de l i ne r eact or s r at ed f or cont i nuous dut y oper at i on based upon t he mot or namepl at e amper es. Sel ect r eact or s f or 60 Hz oper at i on and havi ng t aps f or f i el d adj ust ment of i nduct ance so as t o per mi t achi evement of t he

SECTI ON 41 22 13. 14 Page 11 opt i mum accel er at i on char act er i st i cs f or t he dr i ve. For a dr i ve mot or br anch ci r cui t t hat exceeds 100 f eet i n l engt h, t he r eact or must al so be connect ed i n ser i es wi t h t he cont r ol l er l oad ( out put ) t er mi nal s t o pr ovi de st andi ng wave pr ot ect i on.

2. 4. 6 Li mi t Swi t ches

Pr ovi de pr i mar y upper and l ower gear ed l i mi t swi t ches. Gear ed l i mi t s must al l ow r ever si ng di r ect i on t o back out of t he l i mi t wi t hout r eset t i ng.

Pr ovi de a backup mechani cal hook bl ock act i vat ed upper l i mi t swi t ch wi r ed i ndependent of t he di r ect i onal cont r ol l er s and t he pr i mar y upper l i mi t swi t ch t hat r emoves power f r om t he hoi st mot or , hoi st br ake and hoi st cont r ol s conf or mi ng t o UL 1449. The backup l i mi t must r equi r e hoi st r eset t i ng pr i or t o oper at i on of t he hoi st i n any di r ect i on. Pr ovi de a t hr ee posi t i on keyed swi t ch on t he pendant cont r ol wi t h posi t i ons f or bypass of t he pr i mar y upper l i mi t ( t o al l ow t est i ng of t he backup upper l i mi t ) and bypass of t he backup upper l i mi t i n t he l ower di r ect i on onl y

2. 4. 7 Pendant Pushbut t on St at i on

Suspend t he pendant pushbut t on st at i on f r om an i ndependent f est ooned messenger t r ack syst em, oper at i ng t he l engt h of t he br i dge. Locat e t he pendant pushbut t on st at i on 4 f eet above t he f i ni shed f l oor . Cl ear l y mar k al l cont r ol s f or i dent i f i cat i on of f unct i ons. Pr ovi de di r ect i onal cont act or s wi t h bot h mechani cal and el ect r i cal i nt er l ocks.

2. 4. 8 Br i dge and Runway El ect r i f i cat i on

Pr ovi de f est ooned t ype or encl osed saf et y bar t ype br i dge el ect r i f i cat i on. Pr ovi de encl osed saf et y bar t ype r unway el ect r i f i cat i on. Power col l ect or s must be a f ul l y r edundant dual shoe.

2. 4. 9 Over l oad Pr ot ect i on

Pr ovi de over l oad pr ot ect i on f or br i dge, r unway, and hoi st syst ems. Hoi st over l oad pr ot ect i on must be adj ust abl e bet ween 80 and 150 per cent of hoi st capacity.

2. 4. 10 War ni ng Devi ces

Pr ovi de a war ni ng hor n t hat i s oper abl e f r om a push but t on at t he pendant pushbut t on st at i on. Pr ovi de a war ni ng r ot at i ng beacon t hat i s i l l umi nat ed at al l t i mes dur i ng movement of t he hoi st , t r ol l ey, or br i dge f unct i on.

2. 4. 11 I ndi cat or Li ght s

Pr ovi de I ndi cat or Li ght s mount ed i n an encl osur e on t he bot t om of t he br i dge wi t h l i ght s s i zed and posi t i oned t o be v i s i bl e f r om t he gr ound. The l i ght s must be t he dual - l amp t ype. Pr ovi de a whi t e l i ght t o i ndi cat e t hat power i s avai l abl e on t he l oad s i de of t he cr ane di sconnect and a bl ue l i ght t o i ndi cat e t hat t he mai n cont act or i s ener gi zed. Li ght vol t age must be 115 VAC. Pr ovi de namepl at es t hat ar e l egi bl e f r om gr ound l evel . The namepl at es must r ead, i n t hei r r espect i ve or der , " POWER AVAI LABLE" and " CRANE ENERGI ZED" . The POWER AVAI LABLE l i ght must be suppl i ed by a separ at e, f used t r ansf or mer f or i t s ener gi zat i on.

2. 4. 12 El ect r i cal Ser vi ce

Pr ovi de new el ect r i f i ed cr ane r ai l , col l ect or s, f eeder conduct or s, f used

SECTI ON 41 22 13. 14 Page 12 swi t ches/ l ocal heavy dut y di sconnect and f eeder c i r cui t br eaker i n exi st i ng panel . Ver i f y al l c i r cui t vol t age and si ze r equi r ement s wi t h f i nal appr oved cr ane pr oduct pr i or t o r ough- i n. Al l el ect r i cal ser vi ces shal l be s i zed f or t he new cr ane capaci t y and i nst al l ed per NFPA 70. Pr ovi de new cr ane gr oundi ng per NFPA 70. I nst al l cr ane cont r ol s, i n condui t , per manuf act ur er ' s r ecommendat i ons.

2. 5 ENCLOSURES

Pr ovi de encl osur es f or cont r ol panel s, cont r ol s, and br akes i n accor dance with NEMA 250 and NEMA I CS 6, Cl assi f i cat i on Type 1 i ndoor , gener al pur pose.

Pr ovi de a non- r eset t abl e hour met er , connect ed acr oss t he mai n l i ne cont act or , r eadabl e f r om t he ext er i or of t he mai n cont r ol panel , t o i ndi cat e t he el apsed number of hour s t he cr ane i s ener gi zed.

2. 6 CRANE PAI NTI NG

Pai nt exposed por t i ons of t he cr ane and gi r der s i n accor dance wi t h CMAA

70. Desi r ed col or i s br i l l i ant yel l ow.

Coat f ayi ng sur f aces of bol t ed connect i ons per AI SC 325, but do not appl y f i ni sh pai nt .

Pai nt t he l oad bl ock br i l l i ant yel l ow wi t h bl ack di agonal st r i pi ng, one i nch wi de di agonal bl ack st r i pes l ocat ed on 2 i nch cent er s. Pai nt , coat i ngs, or gal vani z i ng on t he f ol l owi ng i t ems or ar eas i s not accept abl e: hoi st wi r e r opes, hooks, hook nut s, or ar eas on sheaves or r ope dr ums i n cont act wi t h t he wi r e r opes.

Fact or y pai nt el ect r i cal and mechani cal equi pment i n accor dance wi t h t he manuf act ur er ' s best st andar d pr act i ce ( f or t he speci f i ed envi r onment ) , except t hat el ect r i cal equi pment door s, whi ch expose cur r ent - car r y i ng el ect r i cal conduct or s when opened, must be or ange.

2. 7 I DENTI FI CATI ON PLATES

Fur ni sh and i nst al l i dent i f i cat i on pl at es. Pr ovi de non- cor r osi ve met al i dent i f i cat i on pl at es wi t h c l ear l y l egi bl e per manent l et t er i ng gi v i ng t he manuf act ur er ' s name, model number , ser i al number , capaci t y i n bot h k i l ogr am and pound uni t s pr i nt ed i n di f f er ent col or s, and ot her essent i al i nf or mat i on or i dent i f i cat i on.

2. 7. 1 Mar ki ngs on Cr ane, Tr ol l ey, and Hook

Mar ki ngs i ncl ude: br i dge mot i on di r ect i on ar r ows on bot h s i des of t he br i dge; and t r ol l ey mot i on di r ect i on ar r ows on bot h s i des of t r ol l ey.

Mar ki ngs must be v i s i bl e f r om push but t on st at i on and f r om t he l oadi ng poi nt , cor r espondi ng t o t he push but t on l abel i ng on t he pendant pushbut t on st at i on. Mar k t he hook r at ed capaci t y i n t ons on bot h s i des of t he hoi st l oad bl ock.

PART 3 EXECUTI ON

3. 1 EXI STI NG CRANE

Remove exi st i ng 1- t on Over head El ect r i c cr ane and di spose of as di r ect ed by t he Cont r act i ng Of f i cer .

SECTI ON 41 22 13. 14 Page 13

3. 2 ERECTI ON AND I NSTALLATI ON

Er ect and i nst al l t he cr ane ( and cr ane r unway end st ops or modi f i cat i ons t o exi st i ng end st ops) , compl et e i n accor dance wi t h t he appr oved submi t t al s and i n condi t i on t o per f or m t he oper at i onal and accept ance t est s.

3. 3 ERECTI ON SERVI CES

The cr ane manuf act ur er must pr ovi de super vi sor y er ect i on ser vi ces.

3. 4 FI ELD QUALI TY CONTROL

3. 4. 1 Pr e- Er ect i on I nspect i on

I nspect cr ane r unway component s ( r ai l s , el ect r i f i cat i on, et c. ) t o ensur e compl i ance wi t h appl i cabl e codes i ncl udi ng CMAA 70 and ver i f y condi t i ons ar e sui t abl e f or use wi t h t he new 2. 5- t on cr ane. Def i c i enci es wi l l be pr ovi ded i n wr i t i ng t o t he Cont r act i ng Of f i cer .

3. 4. 2 Post - Er ect i on I nspect i on

Af t er er ect i on, t he Cont r act or and t he Cont r act i ng Of f i cer must j oi nt l y i nspect t he cr ane br i dge and hoi st syst ems and component s t o det er mi ne compl i ance wi t h speci f i cat i ons and appr oved submi t t al s. Not i f y t he Cont r act i ng Of f i cer 10 days bef or e t he i nspect i on. Pr ovi de a r epor t of t he i nspect i on i ndi cat i ng t he cr ane i s consi der ed r eady f or oper at i onal tests.

3. 4. 3 Oper at i onal Test s

Check t he c l ear ance envel ope of t he ent i r e cr ane pr i or t o pi cki ng or t r aver si ng any l oad t o ensur e t her e ar e no obst r uct i ons. Test t he syst ems i n ser vi ce t o det er mi ne t hat each component of t he syst em oper at es as speci f i ed, i s pr oper l y i nst al l ed and adj ust ed, and i s f r ee f r om def ect s i n mat er i al , manuf act ur e, i nst al l at i on, and wor kmanshi p. Rect i f y al l def i c i enci es di scl osed by t est i ng and r et est t he syst em or component t o pr ove t he cr ane i s oper at i onal . The Cont r act or must f ur ni sh t est l oads, oper at i ng per sonnel , i nst r ument s, and ot her appar at us necessar y t o conduct f i el d t est s on each cr ane.

3. 4. 4 Test Dat a

Recor d t est dat a on appr opr i at e t est r ecor d f or ms sui t abl e f or r et ent i on f or t he l i f e of t he cr ane. Recor d oper at i ng and st ar t up cur r ent measur ement s f or el ect r i cal equi pment ( mot or s and coi l s) usi ng appr opr i at e i nst r ument at i on ( i . e. , c l amp- on ammet er s) . Compar e r ecor ded val ues wi t h desi gn speci f i cat i ons or manuf act ur er ' s r ecommended val ues; abnor mal di f f er ences ( i . e. , gr eat er t han 10 per cent f r om manuf act ur er ' s or desi gn val ues) must be j ust i f i ed or appr opr i at e adj ust ment s per f or med. I n addi t i on, not e, i nvest i gat e, and cor r ect any hi gh t emper at ur es or abnor mal oper at i on of any equi pment or machi ner y. Recor d hoi st , t r ol l ey, and br i dge speeds dur i ng each t est cycl e.

3. 4. 5 Hook Tr am Measur ement

Est abl i sh a t hr oat di mensi on base measur ement by i nst al l i ng t wo t r am poi nt s and measur i ng t he di st ance bet ween t hese t r am poi nt s ( pl us or mi nus 1/ 64 i nch) . Recor d t hi s base di mensi on. Measur e t he di st ance bet ween t r am poi nt s bef or e and af t er l oad t est . An i ncr ease i n t he t hr oat openi ng f r om

SECTI ON 41 22 13. 14 Page 14 t he base measur ement i s cause f or r ej ect i on.

3. 4. 6 No- Load Test

Rai se and l ower t he hook t hr ough t he f ul l r ange of nor mal t r avel at r at ed speed f or t hr ee compl et e cycl es. Rai se and l ower t he hook, t est i ng ot her speeds of t he cr ane. Ver i f y pr oper oper at i on of hoi st l i mi t swi t ches.

Oper at e t he br i dge and t r ol l ey i n each di r ect i on t he f ul l di st ance bet ween end st ops. Oper at e t hr ough t he ent i r e speed r ange and ver i f y pr oper br ake operation.

3. 4. 7 Load Test s

Per f or m t he f ol l owi ng t est s, as speci f i ed, wi t h t est l oads of 100 per cent ( pl us 0 mi nus 10) or 125 per cent ( pl us 5 mi nus 0) of r at ed l oad.

3. 4. 7. 1 Hoist

Di sconnect or adj ust t he over l oad l i mi t devi ce t o al l ow t he hoi st t o l i f t t he t est l oad. Pr oof t est t he over l oad l i mi t devi ce af t er i t i s reconnected.

a. St at i c Load Test ( 125 per cent onl y) : Check ent i r e st r uct ur e, hol di ng br ake and hoi st i ng component s as f ol l ows: Wi t h t he t r ol l ey i n t he cent er of t he br i dge span, r ai se t he t est l oad appr oxi mat el y one f oot .

Hol d t he l oad f or 10 mi nut es. Rot at e t he l oad and hook 360 degr ees t o check bear i ng oper at i on wi t h no bi ndi ng. Obser ve l ower i ng t hat may occur whi ch i ndi cat es a weakness i n t he st r uct ur e or mal f unct i on of hoi st i ng component s or br akes. Ver i f y t hat maxi mum beam and gi r der def l ect i ons do not exceed CMAA 70 desi gn l i mi t s.

b. Rai se and l ower and t est l oad t hr ough t he f ul l l i f t r ange. Lower t he l oad t o t he f l oor , wai t 5 mi nut es, t hen r ai se and l ower t he l oad t hr ough t wo mor e cycl es. Oper at e cont i nuousl y f or a mi ni mum of 5 mi nut es. As a mi ni mum, oper at e i n each speed f or each t est l oad. I n addi t i on, t he dynami c t est of t est l oad sequence number 2 ( 125 per cent of r at ed l oad) must be r epeat ed f or 10 cycl es at r at ed speed, i n or der t o demonst r at e pr oper oper at i on and r epeat abi l i t y of al l f unct i ons wi t hout component over heat i ng or mal f unct i on. Compl et el y st op t he machi ner y at l east once i n each di r ect i on dur i ng each cycl e t o ensur e pr oper br ake oper at i on. Do not st op hoi st f or mor e t han 15 seconds pr i or t o commenci ng t he next cycl e.

c. Hoi st Load Br ake ( 125 per cent onl y) : Rai se t est l oad appr oxi mat el y 5 f eet . Wi t h t he hoi st cont r ol l er i n t he neut r al posi t i on, r el ease ( by hand) t he hol di ng br ake. Document t he met hod used t o r el ease t he hol di ng br ake. The l oad br ake must hol d t he t est l oad. Agai n wi t h t he hol di ng br ake i n t he r el eased posi t i on st ar t t he t est l oad down ( f i r st poi nt ) and r et ur n t he cont r ol l er t o t he " of f " posi t i on as t he t est l oad l ower s. The l oad br ake must st op and hol d t he t est l oad.

d. Hoi st Loss of Power Test ( 125 per cent onl y: Rai se t he t est l oad t o appr oxi mat el y 8 f eet . Whi l e s l owl y l ower i ng t he t est l oad ( f i r st poi nt ) , di sconnect t he cr ane' s power sour ce. Ver i f y t hat t he t est l oad does not l ower and t hat t he br ake i s set .

3. 4. 7. 2 Trolley

Oper at e t he t r ol l ey t he f ul l di st ance of t he br i dge r ai l s i n each di r ect i on

SECTI ON 41 22 13. 14 Page 15 wi t h a t est l oad of 125 per cent of r at ed l oad on t he hook ( one cycl e) .

Check pr oper f unct i oni ng of al l dr i ve speed cont r ol poi nt s. Ver i f y pr oper br ake act i on.

3. 4. 7. 3 Bridge

Wi t h a t est l oad of 125 per cent of r at ed l oad on t he hook, oper at e t he br i dge f or t he f ul l l engt h of t he r unway i n one di r ect i on wi t h t he t r ol l ey at t he ext r eme end of t he br i dge, and i n t he opposi t e di r ect i on wi t h t he t r ol l ey at t he opposi t e ext r eme end of t he br i dge ( one cycl e) . Check pr oper f unct i oni ng of al l dr i ve speed cont r ol poi nt s. Check f or any bi ndi ng of t he br i dge end t r ucks and ver i f y pr oper br ake act i on. Recor d def i c i enci es. Secur e f r om t est i ng i f def i c i enci es ar e f ound.

3. 4. 7. 4 Rat ed Tr avel Test s

Repeat t r avel t est s f or t r ol l ey and br i dge wi t h a t est l oad of 100 per cent of r at ed l oad. Repeat t he t est f or 5 cycl es at r at ed speed t o demonst r at e pr oper oper at i on and r epeat abi l i t y of al l f unct i ons wi t hout t he over heat i ng or mal f unct i on of any component s. Compl et el y st op t he machi ner y at l east once i n each di r ect i on dur i ng each cycl e t o ensur e pr oper br ake act i on. Do not st op machi ner y f or mor e t han 15 seconds pr i or t o commenci ng t he next cycle.

3. 4. 7. 5 Tr ol l ey Loss of Power Test

Wi t h a t est l oad of 100 per cent of r at ed l oad, r ai se t he t est l oad appr oxi mat el y mi dway bet ween t he t r ol l ey and any per manent obst r uct i on on t he oper at i ng f l oor . St ar t i ng at a saf e di st ance f r om wal l s or ot her obst r uct i ons, at t ai n a s l ow speed ( f i r st poi nt ) of t r ol l ey t r avel . Whi l e mai nt ai ni ng a saf e di st ance f r om obst r uct i ons, di sconnect t he mai n power sour ce at t he wal l mount ed saf et y swi t ch ( di sconnect ) t o s i mul at e a power f ai l ur e. Ver i f y t hat t he t r ol l ey st ops and t hat t he br ake set s pr oper l y.

Measur e t he di st ance r equi r ed f or t he t r ol l ey t o st op.

3. 4. 7. 6 Br i dge Loss of Power Test

Wi t h a t est l oad of 100 per cent of r at ed l oad, r ai se t he t est l oad appr oxi mat el y mi dway bet ween t he t r ol l ey and any per manent obst r uct i on on t he oper at i ng f l oor . St ar t i ng at a saf e di st ance f r om wal l s or ot her obst r uct i ons, at t ai n a s l ow speed ( f i r st poi nt ) of br i dge t r avel . Whi l e mai nt ai ni ng a saf e di st ance f r om obst r uct i ons, di sconnect t he mai n power sour ce at t he wal l mount ed saf et y swi t ch ( di sconnect ) t o s i mul at e a power f ai l ur e. Ver i f y t hat t he br i dge st ops and t hat t he br ake set s pr oper l y.

Measur e t he di st ance r equi r ed f or t he br i dge t o st op.

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SECTI ON 41 22 13. 14 Page 16

1.8 CRANE SAFETY