W912P518T0049_Specifications.pdf

SECTI ON TABLE OF CONTENTS

DI VI SI ON 05 - METALS

SECTI ON 05 50 14

BUOY FABRI CATI ONS

PART 1 GENERAL

1. 1 SCOPE

1. 2 REFERENCES

1. 3 SUBMI TTALS

1. 4 QUALI TY ASSURANCE

1. 4. 1 Det ai l Dr awi ngs

1. 4. 2 Wel di ng

1. 4. 3 Wel di ng Qual i f i cat i ons

1. 5 DELI VERY, STORAGE, AND HANDLI NG

PART 2 PRODUCTS

2. 1 MI SCELLANEOUS METALS AND STANDARD METAL ARTI CLES

2. 1. 1 St r uct ur al St eel Sheet

2. 1. 2 St r uct ur al St eel Shapes, Bar s and Pl at es

2. 2 EPOXY COATI NG

2. 3 EPOXY ACRYLI C TOPCOAT

2. 4 FOAM MATERI AL

2. 5 RETROREFLECTI VE MATERI AL

2. 6 FABRI CATI ON

2. 6. 1 Shop Fabr i cat i on

2. 6. 1. 1 Di mensi onal Tol er ances f or Met al Wor k

2. 6. 2 Shop Wel di ng

2. 6. 2. 1 Wel di ng of St r uct ur al St eel

2. 6. 2. 1. 1 Wel di ng Pr ocess

2. 6. 2. 1. 2 Wel di ng Techni que

2. 6. 2. 1. 2. 1 Fi l l er Met al

2. 6. 2. 1. 2. 2 Pr eheat and I nt er pass Temper at ur e

2. 6. 2. 1. 2. 3 St r ess- Rel i ef Heat Tr eat ment

2. 6. 2. 1. 3 Wor kmanshi p

2. 6. 2. 1. 3. 1 Pr epar at i on of Base Met al

2. 6. 2. 1. 3. 2 Tempor ar y Wel ds

2. 6. 2. 1. 3. 3 Tack Wel ds

2. 6. 3 Shop Assembl y

PART 3 EXECUTI ON

3. 1 METAL WORK

3. 1. 1 Wor kmanshi p

3. 1. 2 Pr oduct i on Wel di ng

3. 2 FOAMI NG

3. 3 FI NI SHED WORK

3. 3. 1 Sur f ace Pr epar at i on

3. 3. 2 Fi ni sh Sur f aces

3. 3. 3 Coat i ng Syst em

3. 3. 4 Pai nt Col or

3. 3. 5 Epoxy Acr yl i c Topcoat

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3. 3. 6 Ret r or ef l ect i ve Mat er i al

3. 3. 7 Ret r or ef l ect i ve Col or

- - End of Sect i on Tabl e of Cont ent s - -

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SECTI ON 05 50 14

BUOY FABRI CATI ONS

PART 1 GENERAL

1. 1 SCOPE

The wor k cover ed by t hi s cont r act consi st s of f ur ni shi ng al l equi pment , mat er i al s, l abor , and suppl i es r equi r ed f or f abr i cat i ng t wel ve ( 12) pol yur et hane f oam- f i l l ed, st eel moor i ng buoys f or Bar kl ey Lock, Cheat ham Lock, and Tennesseen Ri ver Locks. The Cont r act or shal l be r esponsi bl e f or del i ver i ng al l moor i ng buoys t o t he l ocat i on speci f i ed her ei n r eady f or i nst al l at i on. I n t he event of a conf l i c t bet ween t he t ext of t he speci f i cat i ons and t he dr awi ngs, t he speci f i cat i ons t ake pr ecedence f ol l owed by t he dr awi ngs. The Cont r act or shal l be r esponsi bl e f or not i f y i ng t he Techni cal Repr esent at i ve, Sovi r eak I n, Phone number 615- 736- 7950, or t he Cont r act i ng Of f i cer of any di scr epanci es bef or e begi ni ng any wor k.

1. 2 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 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

1. 3 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.

Shop Dr awi ngs

Det ai l Dr awi ngs; G Pr ovi de compl et e det ai l dr awi ngs f or st eel buoy and component s

Wel di ng of St r uct ur al St eel ; G

Pr oduct Dat a; G

Foam Mat er i al ; G

Ret r or ef l ect i ve Mat er i al and Col or ; G

Pai nt and Pai nt Col or ; G

Epoxy Acr yl i c Topcoat ; G

Test Repor t s

Test s, I nspect i ons, and Ver i f i cat i ons

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Certificates

Wel di ng Qual i f i cat i ons; G

1. 4 QUALI TY ASSURANCE

1. 4. 1 Det ai l Dr awi ngs

Submi t det ai l dr awi ngs f or met al wor k and machi ne wor k, pr i or t o f abr i cat i on.

I ncl ude wi t hi n t he det ai l dr awi ngs cat al og cut s, t empl at es, f abr i cat i on, and assembl y det ai l s. I ncl ude t ype, gr ade, and cl ass of mat er i al as appr opr i at e. I ndi cat e met hods of pr ot ect i ng t he wor k dur i ng shi ppi ng, st or age, f i el d assembl y, and i nst al l at i on.

1. 4. 2 Welding

Per f or m wel di ng cont i nuousl y al ong t he ent i r e ar ea of cont act except wher e t ack wel di ng i s per mi t t ed. Do not t ack wel d exposed connect i ons of wor k i n pl ace.

1. 4. 3 Wel di ng Qual i f i cat i ons

Wel der qual i f i cat i ons, per f or mance of wel di ng, wel di ng i nspect i on, and cor r ect i ve wel di ng, shal l be i n accor dance wi t h AWS D1. 1/ D1. 1M. Use pr ocedur es, mat er i al s, and equi pment of t he t ype r equi r ed f or t he wor k.

1. 5 DELI VERY, STORAGE, AND HANDLI NG

Not i f y t he Techni cal Repr esent at i ve or Cont r act i ng Of f i cer at l east 7 days i n advance of del i ver i ng t he buoys. Cont r act or shal l pr ovi de sui t abl e bl ocki ng or ot her suppor t s f or gr ound st or age. Empl oy handl i ng met hods t hat do not r esul t i n damage t o component s dur i ng f abr i cat i on, assembl y, l oadi ng, shi pment , and unl oadi ng of buoys. Shi ppi ng of t he buoys i s at t he Cont r act or ' s expense. Del i ver al l buoys t o t he 758 Bar kl ey Dam Road, Gr and Ri ver s, KY 42045. Coor di nat e del i ver y t hr ough t he Techni cal Repr esent at i ve or Cont r act i ng Of f i c i er . Ar r ange st r uct ur es on t he del i ver y vehi c l es such t hat no damage occur s dur i ng shi ppi ng. Di r ect al l s l i ngs and l i f t i ng l ugs up. Submi t a Del i ver y/ Shi ppi ng Pl an showi ng or i ent at i on and l ocat i ons of st r uct ur es on t he del i ver y vehi c l es pr i or t o shi pment f or Gover nment appr oval . Gover nment can assi st cont r act or t o unl oad t he bouys wi t h a t he Gr ove RT740, 40T ( 40) t ons cr ane. I f t he 40 t ons cr ane i s not suf f i ce t o unl oad t he bouys, cont r act or i s r esponsi bl e f or unl oadi ng.

PART 2 PRODUCTS

2. 1 MI SCELLANEOUS METALS AND STANDARD METAL ARTI CLES

Conf or m t o t he r espect i ve speci f i cat i ons and ot her desi gnat ed r equi r ement s f or mi scel l aneous met al mat er i al s and st andar d met al ar t i c l es. Si ze as speci f i ed or i ndi cat ed. Wher e mat er i al r equi r ement s ar e not speci f i ed, f ur ni sh mat er i al s sui t abl e f or t he i nt ended use and subj ect t o appr oval .

2. 1. 1 St r uct ur al St eel Sheet

ASTM A36/ A36M

2. 1. 2 St r uct ur al St eel Shapes, Bar s and Pl at es ASTM A36/ A36M

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2. 2 EPOXY COATI NG

Mul t i - Pur pose, Pol yami de Epoxy Coat i ng shal l meet t he r equi r ement s of Mi l i t ar y Speci f i cat i on Mi l - PRF- 23236( C) Type V, Cl ass 7, Gr ade C.

2. 3 EPOXY ACRYLI C TOPCOAT

Epoxy acr yl i c t opcoat shal l meet t he r equi r ement s of Mi l i t ar y Speci f i cat i on Mi l - PRF- 24667.

2. 4 FOAM MATERI AL

Foam shal l meet t he r equi r ement s of MI L- P- 21929, Pl ast i c Mat er i al , Cel l ul ar Pol yur et hane, Foam- i n- Pl ace, Ri gi d ( 2 and 4 Pound Per Cubi c f oot ) .

2. 5 RETROREFLECTI VE MATERI AL

Ret r or ef l ect i ve mat er i al shal l be 3M 3935 bl ue hi gh i nt ensi t y pr i smat i c t ape or appr oved equal and shal l meet t he r equi r ement of t he U. S. Coast Guar d speci f i cat i on G- SEC- 393( A) .

2. 6 FABRICATION

2. 6. 1 Shop Fabr i cat i on

Mat er i al must be st r ai ght bef or e bei ng l ai d of f or wor ked. Per f or m st r ai ght eni ng, i f necessar y, by met hods t hat wi l l not i mpai r t he met al .

Shar p k i nks or bends wi l l be cause f or r ej ect i on of t he mat er i al .

Mat er i al wi t h wel ds wi l l not be accept ed except wher e wel di ng i s def i ni t el y speci f i ed, i ndi cat ed or ot her wi se appr oved. Make bends usi ng appr oved di es, pr ess br akes or bendi ng r ol l s. Wher e heat i ng i s r equi r ed, t ake pr ecaut i ons t o avoi d over heat i ng t he met al and al l ow i t t o cool i n a manner t hat wi l l not i mpai r t he or i gi nal pr oper t i es of t he met al .

Pr oposed f l ame cut t i ng of mat er i al , ot her t han st r uct ur al st eel , i s subj ect t o appr oval and must be i ndi cat ed on det ai l dr awi ngs. Shear i ng shal l be accur at e and al l por t i ons of t he wor k neat l y f i ni shed. Make cor ner s squar e and t r ue unl ess ot her wi se shown. Fi l l et r e- ent r ant cut s t o a mi ni mum r adi us of 3/ 4 i nch unl ess ot her wi se appr oved. Pr ovi de f i ni shed member s f r ee of t wi st s, bends and open j oi nt s. Ti ght en bol t s, nut s and screws.

2. 6. 1. 1 Di mensi onal Tol er ances f or Met al Wor k

Measur e di mensi ons usi ng an appr oved cal i br at ed st eel t ape of appr oxi mat el y t he same t emper at ur e as t he mat er i al bei ng measur ed. The over al l di mensi ons of an assembl ed st r uct ur al uni t must be wi t hi n t he t ol er ances i ndi cat ed on t he dr awi ngs or as speci f i ed i n t he par t i cul ar sect i on of t hese speci f i cat i ons f or t he i t em of wor k. Wher e t ol er ances ar e not speci f i ed i n ot her sect i ons of t hese speci f i cat i ons or shown, an al l owabl e var i at i on of 1/ 32 i nch i s per mi ssi bl e i n t he over al l l engt h of component member s wi t h bot h ends mi l l ed; component member s wi t hout mi l l ed ends must not devi at e f r om t he di mensi ons shown by mor e t han 1/ 16 i nch f or member s 30 f eet or l ess i n l engt h, and by mor e t han 1/ 8 i nch f or member s over 30 f eet i n l engt h.

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2. 6. 2 Shop Wel di ng

2. 6. 2. 1 Wel di ng of St r uct ur al St eel

2. 6. 2. 1. 1 Wel di ng Pr ocess

Per f or m wel di ng of st r uct ur al st eel by an el ect r i c ar c wel di ng pr ocess usi ng a met hod whi ch excl udes t he at mospher e f r om t he mol t en met al and conf or ms t o t he appl i cabl e pr ovi s i ons of AWS D1. 1/ D1. 1M. Mi ni mi ze r esi dual st r esses, di st or t i on, and shr i nkage f r om wel di ng.

2. 6. 2. 1. 2 Wel di ng Techni que

2. 6. 2. 1. 2. 1 Fi l l er Met al

Pr ovi de t he el ect r ode, el ect r ode- f l ux combi nat i on, and gr ade of wel d met al conf or mi ng t o t he appr opr i at e AWS speci f i cat i on f or t he base met al and wel di ng pr ocess bei ng used or be as shown wher e a speci f i c choi ce of AWS speci f i cat i on al l owabl es i s r equi r ed. I ncl ude t he AWS desi gnat i on of t he el ect r odes t o be used i n t he schedul e of wel di ng pr ocedur es. Use onl y l ow hydr ogen el ect r odes f or manual shi el ded met al - ar c wel di ng r egar dl ess of t he t hi ckness of t he st eel . Use a cont r ol l ed t emper at ur e st or age oven at t he j ob s i t e as pr escr i bed by AWS D1. 1/ D1. 1M, Subcl ause 3. 5 t o mai nt ai n l ow moi st ur e of l ow hydr ogen el ect r odes.

2. 6. 2. 1. 2. 2 Pr eheat and I nt er pass Temper at ur e

Per f or m pr eheat i ng as r equi r ed by AWS D1. 1/ D1. 1M, Subcl ause 3. 5 or as ot her wi se speci f i ed except t hat t he t emper at ur e of t he base met al must be at l east 70 degr ees F. Sl owl y and uni f or ml y pr eheat t he wel dment s by appr oved means t o t he pr escr i bed t emper at ur e, hel d at t hat t emper at ur e unt i l t he wel di ng i s compl et ed and t hen per mi t t ed t o cool s l owl y i n st i l l air.

2. 6. 2. 1. 2. 3 St r ess- Rel i ef Heat Tr eat ment

Wher e st r ess r el i ef heat t r eat ment i s speci f i ed or shown, per f or m i n accor dance wi t h t he r equi r ement s of AWS D1. 1/ D1. 1M, Subcl ause 5. 8, unl ess ot her wi se aut hor i zed or di r ect ed.

2. 6. 2. 1. 3 Workmanship

Per f or m wel di ng wor kmanshi p i n accor dance wi t h AWS D1. 1/ D1. 1M, Cl ause 3 and ot her appl i cabl e r equi r ement s of t hese speci f i cat i on. Al l wel ds shal l be uni f or m i n s i ze and shape. Fi l l et wel ds shal l be ext ended ar ound t he ends of member s t o f or m cl osed l oops. Cr at er s at t he ends of i ncr ement s shal l be f i l l ed t o pr event cr acki ng. Al l wel di ng sl ag, oxi de, and spat t er shal l be r emoved f r om ext er i or sur f aces. Wel ds shal l be f r ee of def ect s such as under cut , over l ap, por osi t y, cr acks, and voi ds. Ther e shal l be no bur n- t hr ough. Wel ds shal l not be peened or caul ked.

2. 6. 2. 1. 3. 1 Pr epar at i on of Base Met al

Pr i or t o wel di ng, i nspect sur f aces t o be wel ded t o ensur e compl i ance wi t h AWS D1. 1/ D1. 1M, Subcl ause 3. 2.

2. 6. 2. 1. 3. 2 Tempor ar y Wel ds

Make t empor ar y wel ds, r equi r ed f or f abr i cat i on and er ect i on, under t he

SECTI ON 05 50 14 Page 6 cont r ol l ed condi t i ons pr escr i bed f or per manent wor k. Make t empor ar y wel ds usi ng l ow- hydr ogen wel di ng el ect r odes and by wel der s qual i f i ed f or per manent wor k as speci f i ed i n t hese speci f i cat i ons. Conduct pr eheat i ng f or t empor ar y wel ds as r equi r ed by AWS D1. 1/ D1. 1M f or per manent wel ds except t hat t he mi ni mum t emper at ur e must be 120 degr ees F i n any case. I n maki ng t empor ar y wel ds, do not st r i ke ar cs i n ot her t han wel d l ocat i ons.

Remove each t empor ar y wel d and gr i nd f l ush wi t h adj acent sur f aces af t er ser vi ng i t s pur pose.

2. 6. 2. 1. 3. 3 Tack Wel ds

Subj ect t ack wel ds t hat ar e t o be i ncor por at ed i nt o t he per manent wor k t o t he same qual i t y r equi r ement s as t he per manent wel ds; c l ean and t hor oughl y f use t hem wi t h per manent wel ds. Per f or m pr eheat i ng as speci f i ed above f or t empor ar y wel ds. Mul t i pl e- pass t ack wel ds must have cascaded ends.

Remove def ect i ve t ack wel ds bef or e per manent wel di ng.

2. 6. 3 Shop Assembl y

Assembl e i n t he shop t o det er mi ne t he cor r ect ness of t he f abr i cat i on and mat chi ng of t he component par t s unl ess ot her wi se speci f i ed. Do not exceed t hose t ol er ances shown. Cl osel y check each uni t assembl ed t o ensur e t hat al l necessar y c l ear ances have been pr ovi ded and t hat bi ndi ng does not occur i n any movi ng par t . Assembl y i n t he shop must be i n t he same posi t i on as f i nal i nst al l at i on i n t he f i el d unl ess ot her wi se speci f i ed.

Remedy er r or s or def ect s di scl osed by t he Cont r act or wi t hout cost t o t he Gover nment . Bef or e di sassembl y f or shi pment mat ch- mar k each pi ece of a machi ner y or st r uct ur al uni t t o f aci l i t at e er ect i on i n t he f i el d.

I ndi cat e t he l ocat i on of mat ch- mar ks by c i r c l i ng wi t h a r i ng of whi t e pai nt af t er t he shop coat of pai nt has been appl i ed or as ot her wi se directed.

PART 3 EXECUTI ON

3. 1 METAL WORK

3. 1. 1 Workmanship

Wor kmanshi p must be of t he hi ghest gr ade and i n accor dance wi t h t he best moder n pr act i ces t o conf or m wi t h t he speci f i cat i ons f or t he i t em of wor k bei ng f ur ni shed.

3. 1. 2 Pr oduct i on Wel di ng

Per f or m pr oduct i on wel di ng conf or mi ng t o t he r equi r ement s of AWS D1. 1/ D1. 1M, as appl i cabl e. St uds, on whi ch pr e- pr oduct i on t est i ng i s t o be per f or med, must be wel ded i n t he same gener al posi t i on as r equi r ed on pr oduct i on i t ems ( f l at , ver t i cal , over head or s l opi ng) . Test and pr oduct i on st ud wel di ng wi l l be subj ect ed t o v i sual exami nat i on or i nspect i on. I f t he r educt i on of t he l engt h of st uds becomes l ess t han nor mal as t hey ar e wel ded, st op wel di ng i mmedi at el y and do not r esume unt i l t he cause has been cor r ect ed.

3. 2 FOAMING

The i nt er i or of t he buoys shal l be f i l l ed wi t h pol yur et hane f oam. Af t er f oam has cur ed, t her e shal l be no mor e t han a 1- i nch gap bet ween t he t op of t he f oam and t he i nsi de of t he buoy t op head. Ther e shal l be no voi ds of such quant i t y or s i ze t hat coul d cause t he buoy t o be suscept i bl e t o

SECTI ON 05 50 14 Page 7 f l oodi ng. Foami ng equi pment , j ob s i t e r equi r ement s, and speci f i c i nst al l at i on pr ocedur es shal l be i n accor dance wi t h t he f oam manuf act ur er ' s r ecommendat i ons.

3. 3 FI NI SHED WORK

3. 3. 1 Sur f ace Pr epar at i on

Af t er f oami ng, t he ext er i or of t he buoys shal l be bl ast c l eaned i n accor dance wi t h SSPC SP- 10 ( I S08501- 1 Sa 2. 5) . Bl ast t o achi eve an anchor pr of i l e of 1. 0- 5. 0 mi l s ( 50- 75 mi cr ons) as i ndi ct ed by a Keane- Tat or Sur f ace pr of i l e Compar at or or Test ex Tape. Pr evi ousl y bl ast ed st eel shal l be ul t r a- hi gh pr essur e wat er j et t ed t o SSPC - SP WJ- 2( L) I NACE WJ- 2( L) .

The wet sur f ace can be dr i ed by bl owi ng wi t h dr y compr essed ai r gi v i ng speci al at t ent i on t o hor i zont al sur f aces and r ecesses. Pr i or t o pai nt i ng, al l bl ast mat er i al shal l be r emoved f r om t he ext er i or sur f aces of t he buoys.

3. 3. 2 Fi ni sh Sur f aces

The buoys shal l be pai nt ed wi t h Mul t i - Pur pose Pol yami de Epoxy Coat i ng Mi l - PRF- 23236( C) Type V, Cl ass 7, Gr ade C. coat i ng syst em. Al l pai nt i ng shal l be per f or med af t er t he buoys have been cl eaned i n accor dance wi t h par agr aph 3. 3. 1. Al l wel di ng, machi ni ng, cut t i ng, dr i l l i ng, f or mi ng, or any ot her oper at i on t hat woul d damage t he coat i ng syst em shal l be per f or med pr i or t o pai nt i ng. The pai nt shal l be appl i ed by spr ayi ng, usi ng t he met hods, equi pment , and saf et y pr ocedur es r ecommended by t he pai nt manuf act ur er . Pr i or t o coat i ng, t he buoy shal l be st r i ped; i . e. , pai nt shal l be spr ayed acr oss shar p edges, cor ner s, wel ds, and ot her ar eas whi ch ar e di f f i cul t t o coat . The f i ni shed sur f ace shal l be f r ee f r om r uns, sags, hol i days, and embedded f or ei gn mat er i al . Gr i ndi ng pl at e edges i s r equi r ed bef or e pai nt pr epar at i on i n or der t o r emove har dness as a r esul t of f l ame cut t i ng. Remove al l wel d spat t er . Br eak al l squar e edges and hol es ot her t han bol t hol es and gr i nd t o a 1/ 16 i nch r adi us pr i or t o pai nt i ng. Thor oughl y c l ean f or ei gn mat t er of f met al sur f aces. The sur f aces of compl et ed buoys shal l be f r ee of shar p edges, bur r s, s l ag, or ot her def ect s whi ch woul d af f ect ser vi ceabi l i t y or pr esent a saf et y hazar d during handling.

3. 3. 3 Coat i ng Syst em

Thi s pai nt shal l consi st of t wo coat s, 6. 0 t o 8. 0 mi l s dr y f i l m t hi ckness each, cover i ng t he ent i r e ext er i or sur f ace of t he buoy. The pai nt shal l meet t he r equi r ement s of MI L- P- 24441 or MI L- P- 24647. The f i r st coat shal l be a neut r al col or such as gr ay or buf f . The second coat shal l be t he appr opr i at e col or as descr i bed i n par agr aph 3. 3. 4. The buoy coat i ng syst em i ncl udes an epoxy pr i mer and an epoxy acr yl i c gl oss t opcoat . The pai nt s i n t he coat i ng syst em ar e commer ci al pr oduct s avai l abl e f r om a var i et y of manuf act ur er s. However , t he pai nt s shal l be appl i ed as a compl et e syst em; i . e. , t he pai nt s used on any gi ven buoy ( pr i mer and t opcoat ) shal l be f r om t he same manuf act ur er . The pai nt s shal l be VOC-compl i ant and f r ee of l ead and chr omi um.

3. 3. 4 Pai nt Col or

The r equi r ed col or s shal l be i n accor dance wi t h FEDSTD- 595. For Feder al buoy t he col or shal l be whi t e conf or mi ng t o Feder al Col or No. 37925.

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3. 3. 5 Epoxy Acr yl i c Topcoat

Al l ext er i or sur f aces above t he wat er l i ne shal l be coat ed wi t h an epoxy acr yl i c gl oss t opcoat , 1. 5 t o 2 mi l s dr y f i l m t hi ckness. Thi s shal l be a commer ci al pr oduct f r om t he same manuf act ur er t hat suppl i es t he epoxy pr i mer . I t shal l be sui t abl e f or use i n a mar i ne envi r onment , r et ai n i t s gl oss and col or f or a mi ni mum of t wo year s i n ser vi ce, and be of t he appr opr i at e col or as descr i bed i n par agr aph 3. 3. 5.

3. 3. 6 Ret r or ef l ect i ve Mat er i al

Bl ue Ret r or ef l ect i ve mat er i al shal l be i nst al l ed as shown on t he dr awi ngs.

Ret r or ef l ect i ve mat er i al shal l meet t he r equi r ement of t he U. S. Coast Guar d speci f i cat i on G- SEC- 393( A) . Pai nt shal l be t hor oughl y cur ed bef or e r et r or ef l ect i ve mat er i al i s appl i ed. Sur f aces t o r ecei ve r et r or ef l ect i ve mat er i al shal l be c l ean and dr y, and t hei r t emper at ur e shal l be 50 degr ees F or above. A r ubber hand r ol l er shal l be used t o r ol l t he r et r or ef l ect i ve mat er i al f l at ont o t he buoys. Ret r or ef l ect i ve mat er i al shal l be appl i ed i n cont i nuous sheet s, and shal l not be spl i ced.

3. 3. 7 Ret r or ef l ect i ve Col or

Bl ue r et r or ef l ect i ve mat er i al shal l be used f or t he buoys. The bl ue col or shal l be conf or mi ng t o FEDSTD- 595.

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