ML19246A294

Reg Guide 1.72,Revision 2, Spray Pond Piping Made from Fiberglass-Reinforced Thermosetting Resin

ML19246A294
Person / Time
Issue date:	11/30/1978
From:	NRC OFFICE OF STANDARDS DEVELOPMENT
To:
Shared Package
ML19246A295	List: ML19246A294
References
REGGD-01.072, REGGD-1.072, NUDOCS 7812130099
Download: ML19246A294 (3)

Text

.t Revmon 2 h em t-r 1978 8 (d, U.S. NUCLEAR REGULAT G J DE p '".

s.

~

OFFICE OF STANDARDS DEVELOPMENT REGULATORY GUIDE 1.72 SPRAY POND PIPING MADE FROM FIBERGLASS-REINFORCED THERMOSETTING RESIN A INTHODUCTION B DISC USSION

('

(lener al D+ sign ('r it, ri n !.

'y 2 iht v St and-A1 H

'r m! l're e

t '

! ' i ' ~b i

d'<

' :.t p i h.t' AJ p.

A.

7 ;en+ r a

'+

ar is :eni H e,. rd i

4

'. I, ! m ':-

8;

-rah a ('

4 Ih wn ( rMen. fr Nm.or P-w+'

ilanto i

i l e

.inc

. ! il. -

m the Ac a

!s in !

10 L f M P.o !

b 1 stic ib t'

ib-(the t - b ll r +, j ui: +

Pr-

.1!

V' r

i : 1. !

l'fiL/a't n ca tk uuct: i e

e 7ts ali'br

}.'

l iI

' ' ! ~i*

• r"< i C that s t ru-III '

'yste!

.insi

.j u

• nts

(' o!*'

('i' ar*

"\\' M'u tili

' tin!.

f

i i": '

ty lo ib

.f.

'T ' n + r t.i n t t-it 4" and then d to r et m n<

t.

th, e i n t e.1 in.1 t.,t il t.' q u di' s t.u: tu A i

a: -

the A S M !-

4' lm

'hc if et V 1r t r :!u!' ' ! hV a.~ r l n;e n s u r a t e with th"

tv.rt.u.

e funct: ns to pu f..r: ni Ap;a n hs H. "qua;-

t' (W.

>-l

' ; ir - 1 i,

fe rt + d m

t e.n fI! In ny As.u r u.

e t 'nten i f

• N uch 4r

. '.. < is u; th:

o:

hmitn! to i

ing 11 ants

t, (~F H I the

(', b an !

r u n t n! '

,ard <b Jn an i

4 n d F i r!

H";a e

Part m:

.gi.u+

that i. a u.

., tAh hed f at.n at t n, f H 1 H,, pin c

'I he (1,b ('

d..

it i;.. nte i

,cr tem; ct dur t In at. E n.a -

atr 1 4 t < red,

i nt 'i mi t<.

rn su re i;ha. re mn :dmc rd) N au.

tb An "rp m S.

et, fr. est mc sp, ci d pr:

e f Lten ds ASIM) '.; cofi tri

• 1 10 a 'l H t,at HIH t em pe rat u r. L:

('

u.J

,t a:n ! t r a

. I tam i..we w,

n t An a-

pip, s y,t >

w n ul.1 n. nnid., to.p difini f<.r r

rg tha i<

6 n hte.n t o.n. ms t al: 0 r.

', a a m s;>

t r.n f t he the mtinJed crche te mper at ure u

. j ~

Mt la m t,'

' ; l i n i, 5J mc1[!' il

',te D F i

e. i t t gene " dis re i ir.nt/

u!"

tal stand irds

• b, It

MW

'h d 4tf r Ho Nm - '

te i ei ote that Mu y

.f futur, g

3 g.

e da

('

'l-+

ma; auth g the t

(

. - 1:::; ( 1 ~1/ w ihi

.. i t '.L a s e m:n.. r I r v h. nsg,'

up r equ<

r.'su in t t.

gg,

< g g. ; g, 7

('

u.

a 3,g g

n (i>

tta>

w hwh require that !.r. p se 1 dt e r-and aabru at a,n ( mic (.+,e A c c e p t a b ih t i. - - A S M.c, t.

in, desenb. I n ' uirem, n t - or p<r-etp.n ill r.hvne.n 1 N y r re.c i:# n' t< > the i

r p t $!,b le el.,f t h " r e- ! p re rid" m

a'

'.uh in i r e 'c i w., n s

I.-.1"

(..ase w a,.

. p. w e t.er.

M

'bI) t'.

thi n s!"

i 1. U ;

l' d am e n t - w; !u n d s t ru c -

tures h tve

+ 4'hanwal projarties >upervir t<>

, "1 1 c'Ab!"

.b.

rdae a n.e t h,d a

1. ', t, d u, to flh e r /ia s,- f;.ii ni 1.im in i t e s.

i

.t n d. n e v :t re Lon-the N. H ( ;

t if f f..

mp, '. w thev re quire-

,g y g3 wg sg g t.

the d" un

• f ihr:'ati:n' mi et y-r elW d i r+

.ure t r."n t, wA r, '. u J r

idr.;" nerts

.t f.4 rgi4.

-r-n f..rc* d th rm -

and ', '-

"t ! mi uln <HTH)

it;.m.

f.-

si,r i p ad bgh t-w it er -

I' h e llum ('ase i ; b t:t n '. 7n a lk' w n !" des;gn app!!. i t i..

ih: i:ul !" a; ; m t4 The A d v tsi > ry tr+ss f rorn t he hydrostatic de agn Lc.is ( H DH )

c,

.n ! cn<

dd rex '

as de rive d f rnrn either Prt i edure A

( 1 ru i t t e He

4. t i! c f j t r.!-

h n la 4 n nin-

< t r encth suurd i <

rnmg th: gm fr aihe. i<ncurred the rec tt1,r v ; i s it i. -

. 2

• 5.n a r e

am* ' f r~m r e A:mer can W eiv f M ai r, an -

tt i P W *e:5 1'ei b r. spn e e r n ( Lenter, M5 hast D 'i Str**t.

...res r wa se can e charges 9 m ; rm %,

3s 2e WLa.

• w ' ra M 1 C 'wts ho te w i o ** so- *w v n+ *+ Corm.au m s s

• s.w USN AC REGULATORY GUIDES Nu n, c om-,e A. w nc rw A entim om. e..a w M sti,,, er *' y jacant 4e

44. jp!

Pz' Ongs e rie 3 4 wag e gu e idfiip [' l * * [ War re4'b ut a f$f t. e-D

'8

1. papev1gprit g{gg,44

g etg (yQ et p a T

%'3" f*1Me m 75 St 3pt ' A f* @

s U* w.** e o +% =* ",* 'wN 'an 'e wd tv:ses C t-v~e=

> e 'a., e a t waa a >= %as m1 t,v e% sua er. eve %

LW stibidt'9tj g( teder'93 rw ff1 Wyh )g p,gdsgrgg g tj 79t tQ St. dtt. .f' Uf uf 4'"Y

<W I NM Ok D * %

b b h >( 'S GCOrM a*M5 b81gtASM

• y M arjag 3;p nruf Buf at 1 gges )

r q,tg*st ang erw1 cryn

} "**'W'8P'

• 3

'M

"s

' O' %"I' O 8 4'IM hG'M ES N' f 91')tJW911 M R% d4 4'.('

Bf plf prs f l* r $r'* bDre ftW 4p DOLO'108 3 I.s**S Fu Y 4'*' N %E9 i'"%

d#I

,L 4 ' H' k+

P4H8C" etH Ott s' The ytet er'll be et ; qng.tafag if f py pyriyei ts 3tems bw *e9:rd.rg 4 r " < 8 'W " ' 'N 4 '

• A

I 4' 'tI#4' T 1 4

%%Wdf 8 70 ft'g egsvest e y r tyrs new,gru e of 6 gesurrr rt

<w u( e< em try

• p (xy'v%gast w' s V 4'et er% d**1 f'W T W n' des 'i

's C4' ent e-

%,,v,

e s.r ae. p +s v,. - 1.nus ani

% *.,. %v v D ww" **PS s'v? 9msgas'= w s O w erTrove o,,'ts.n ** mw, y,1,ng ar e e e

,r e,,pw, e

,,, erw., e s

,,'43 a

g,.,p,,

g e,

%r 3, r c,p o a e)ps e,

4 =r y

$d DMS$ Mk3 )t.sd899 WW Is4 T4v4&] SS 3(41f'MW ha'4

'. gr r f petW*g y*gtg te gr VTwer'*g y,sier st y g g

,,p r,j}p..

gr.t p3 et,

, #i fu g

F l / /

A"aN f

l Drv1 to re'figut-t r wegs, se,ft w' vater rg y eqqar de* gr e I Ng 4.ar}se wgyg rdN+gsme* eq q s emb.or' s

u r Wu t

', ri qp

,,4

,,,,.9(.,

08But4Phripyg (, gwvgr-e'"4 rar erVqu'i t'rwe it4 g,ed b er.d 3 )rbtu r s geg** r S eye,,

a.

(cyche) or Procedure B (static) of Specifica-teste J and auahfied for the intended env nn-t ion ASTM D-2992. " Standard Method for Gb-ment. Use of RTR pipmg for systems other taming Hydrostatic Design Basis for Reinforced than spray ponds would be considered on a; Thermosettin g Re sin Pipe and Fitttngs Proce-case-by-case basis only.

du res. " These procedures are intended to be used for general apphcations for Class 3 Metal pressure vessels and closed systems pipin g. For s afe t y-relat ed s y s t em s such as are p rovided nith pressure rehef valves or spray pond pipin g, a design f actor cf 6 is devices for p otectwn aga m s t overpre ssure

' desired Under some conditions the qu ahfic a-Whe re RTH pipmg systems are uwd for ; pen-ti,n p roced u re s may not result in a design ended systems such as the et ohng w ater dnt ri-factor of 6 and it is therefore neces.ary to bution for spray p< nds. the rehe f calvr provi-i perfunn an additional s hor t-tim e cyche and sions may be omitted. However, it is d"sirable burst test to ensure that the desired design to protect the mtegrity of the piping by other facter is obtamed.

means such as selection of spray novies to prevent their clogging or 3electw n of pump F ailu r t is defined in ASTM D-2392 as echer delivery characteristics to prevent the pipmg lea km g w eep m g. or b u rs tin g Whichever of pressure from exceedmg the design pr<ssure thes, ircurs first defmes failure for the pipmg.

General guidance for loa d.n g com bm a tion s Industry e x pe rie n ce with fiberglaw -

relative to design limits for Class 3 pipmg may reinforced resm pressure vessel-and piptng ba fi iu n d in Regulatory Guide 1 18. " Design extends over 20 to 23 years of service I tait s and Imdmg Com bin a tio n s for Seis nic experienc+_ durmg which the pe r fo rmanet of Category I Fluid S" stem Compenents How-fiberglass-reinforced resin pip m g has been ever. specific equai uns and hmits from Code satisfactory Industry claim s that the hfe Case N - 155 are not addressed in Regulatory expectancy for preperly installed pipmg is at Guide 1 18.

lea s t 10 years, the normal design hfe for' presently planned nuclear power plants. Sin ce Wrmal commercial practice p rovides a RTR pipmg apphcations will be limit e d to we ather -resistant coa tin g to the e x te rio r of t em pe ra t u re s less than 65"C ( l 19 F ). except

, RTR pipmg that will be expased to weather for e casunal t ra n sien t s to 100"C (212"F),

) con diti. ;n s. E x p e rience has shown that this th"re is httle need for applymg msulation to p rac t ice previJes adequate p rot ec tion for the such pipmg. Ih nee it should be left bare to i service co n ' id e r-d in t his guide Distribution make the pipmg rendi t accessible for mspec-of resin is generally sucn that more resin is tion.

appiled to the exterior cf the pipe than to the 5

mt e rior. and part cf the outer resin may have Since the NRC staff is allowin g only 10 y e cial prep rties to p ro t ec t the unuerlying cycles for quahfication testmg of the pipm g.

material from dRef erious effects from souices special procautions should be taken to ensure such :is ultraviolet radiation and weather. RTH that the design assumptions are not exceeded pipmg has been used t>

dis t rib u t e conhn g w ater lo nmks m spray ponds It is decir-ble The preoperational tes t in g program shuuh!

to p rovid e weather protection to such pping.

include tests of the installed pipmg to ensure Mcw-ver, the omission of an exterior protective absence of vibration due to weather conditions coating would be acceptable for pipmg mstalled or water flow that may fatigue the pipmg m covere d but accessible trenthes, provided beyond values assumed m the design of the the inserv ce mspection frequency is mereased system.

to require vwual m s pec t ion for leaks of all such piping at least once every year.

Inservice m spectan requir emen t s should he similar to those m ASME Code,Section XI.1 for bimited information is avadatae on the effects Class 3 components. 3 The inspection f or Code

<J adiati n cn lammates (fiberglass and resm Class 3 ccmpune nts mvolves a visual inspection m aterlah tended tvet her ). Howeve r, short-of the pipmg for evidence of unanticipated t un e expisura tests havt been made and they lea ka ge and s t ru c t u ral dis t res s. Smt e the sh>wed no appreciable change m the t en sile su pport of RTH pipmg may be sensitive, each s t rength of the Mpe test piece For coolin g in se rvice m s yc tion of such piping should v e: apphcation, there appears little opportu-include all its support s.

nit y fo r ralation exposure, and the piping

<hould be acceptable without athfional testing.

C.

REGULATORY POSITION Thh guide does not address the acceptabibty

./ RTH pipmg for other s ys t ems. If RTR Safety-related sprav pond pipmg ccmponents nsufered for systems such as liquid made from fibe rgla s s-re mfo rc ed t h e rmos e t t in g pi;)mg is ce ra dw as t e systems where it may be exposed to lo n g-t e nn r idiation, the laminates should ha Components classied as N Rr Quahty Group A.

B.

and C snould er nf arm to the r*o mremen t s of t.h e ASME f%1er an d Pressure ' essen owe f >r M us 3 mmponents ' N RC RegMatary GutJe iP v auty o rw p Cla s & af w hn e1 3tandards Nr C::uas may te - inned fmm me Amenc r..koet y hr Testag

' ater-2* cam-4nd Ra.twac twe-waste-Gntamm g Gmycents m.f Materuis I s M Race stree". Philadapa. F ar.nsyinn.a 4 3IC3

f N r.c ar P 3=*r Ptan t s",

}43 D/-

r

-7

=

.~--

resin shouhl comply w it h A S>lE Code Case 6.

HTH piping shouh! t,e uninsuliti J

,r N - l f/>- 1 (1792-i) supplemented by the follow-uncovered and inst alled under t on.h t ton s that make it readtly accessible for inspect i,n.

ing

1. The design temperature for spray pond

, P reope r at ion al and in st r vice in pections piping should be 100C ( 212 F ) -

shou d be as follows 2 The alk,w a ble d" sign st ress shoubi be th" a 1)u r m g the preoperat a,nal t, sting peri-value obt ained from the minu..um llDB ( h ydro-

c. d, tests should be

m. ole to ver if y that the st a tic design ba sis ) in Tar e 3611-1 of Code piping is free i f vit. ration induc+ d by weat her Case N-l%-1 (Procedure A or H ) or the value con dit ion s < r w at t r f l<.w that..,u hl f atigue the

, determined a > one-sixt h of the stress obtained piping prematurely

! f rom a short-time bu rs' tes' for the pipe bein,

, iriahfied, whichever is L wer The s ho r t - t im e b

le herglass-reinf a ced pipin g < i.mp,nent s t

burst 3 t ren gt h shouhi be determined by should be in spec t ed in a,cordance w it h A 91E t>u rsting t he pipe ( ASTol D-lim-74 using f ree-Code, Sec t io n XI, for n ub

( 'l a s s 3 cmapo-5

, end m.,unting) af ter it has been exposed to 10 nents In athlit t< >n, all pipe s u ppor t s shouhl 1

pressure c /cles from a t mo s p h e ric to design be inspect e.1 i

p re s s u re.

Inspection f requency fi a piping should c.

3 The ealue of "K"

in equation 9 of para-br increased to "nce annually if an e x t e rior graph 36f>2. 2 shoul f he Im.ited to 1. 2 unless it weat her-r esist an t coatin g is n<,t p rovided can b,

demon s t ra t ed that wit h the use of a large value of K the functwnal capability of the sy s t em will not be impaired during upset an i emergency condituins.

D.

IMPLEM E NT ATION 1 The following items sh. uhl lie id"ntifie 1.

The pui pose of this sec t i<.n is to provile a.

The physical 1,, cation of the s y s t en. in in fo nn a t io n ti, licen se appheant s and hi ens"c' relation to other safety-related systems, regarding the N H C staffs plans for using this regulatory gui 1"

b. The design and serv:ce lomis, and This guide. eflects current NIM ' staff prac-c The value of "B"

to be used in equa-t ic e. T h e re fo re. except in t h.,se case-in which tion 1 of paragraph

%11.1, together with the appheant proposes an acceptabl" alter-justification for it s selection.

native method for complying with specified por-in ns of the

( 'ommis s i.n '

r egulat ions the

5. Pressure-rehef devices may be omitted for method described herein is being o n i will con-piping systems that are open-ended and for t in u e to be used in the erduatr n of submittals which the system pressure is hmited by other in co n n ec t io n with operating Pense or con-means (such as nonclogging spray nozzles and struction perm.t a p p l:c a t ii.n s until this guide is self-hmit i w pump c harac te ristics ) to design revi ed as a result ~f suggestions fr. m the public or additional staff revit w.

pressure 143 338'

• y

-9 1.72 '

s.

r e UN;Tf D ST ATf 5 g

q NGCit AR af.M ATOav Cover 55lON w ALM 1N STON. D C 20555 POST AGI AND f fiS PAiO j,

-,o,,.,,,c...

Of 8 +C:AL B-J5tNF 55 Stre.a os, co.u., woes hmn St N Aif f ICR PGiVATE U51.1300 k

j us m