ML20059B981

From kanterella
Jump to navigation Jump to search
Passive Containment Cooling Condenser Equipment Requirements Specification
ML20059B981
Person / Time
Site: 05200004
Issue date: 10/15/1991
From: Bruzzone M
GENERAL ELECTRIC CO.
To:
Shared Package
ML20059B690 List:
References
NUDOCS 9310290181
Download: ML20059B981 (63)
v • d • e


Text

. .. _ , .~ _ . - . _

r h 6

Progetto identifcattvo ocoact m no

-" S B W 5 2 8 O T N I X N O 1.5 0 0:

SBWR Comm. Emmente Pagna Di Ct ente .emune py peps of.

0 * *? po ao N 2 5 3 3 0 lD'N U I N C ISN 'l _,,j2 Tip0 00C.. AN89ah +

Aag C SC A.f str cr00 !ce'ttificat'vC CCmDCPente 2 5C COCf PCC $" *O thtme9: 0em'bcat@a toot ODC fype C.l. ns.

Cl 48 ONFS RNP 2

.I,[# RELAZIONE TECNICA 'M8 PASSIVE CONTAINNENT COOLING CONDENSER EQUIPMENT REQUIREMENTS SPECIFICATION Sostituisce easmewies P

First issue Stato valid.. ]

Aev 0 Data 15/10/91 .DesC,nzione:

, ,c

.., oa,,

Aed42'o" N. BRUZZONE '*

-- Nh rece .o o,' ,

.l 4

M. BRANDANI hM/ 1 f.Sc.N$'ao$<o[$$

l

  • i f

AutonZ2& bone emissione- 4 l isa wao* won H. SIMONOT e

.i

}  ;

\

l l

i m _

f A-tion 10, 1 and 12 ghy U / O __ 1/ T.

N AC.G;p e g g };us.consi or ncy with BRUZZONE L M NI I

pRhMDA e

1 5.6.92 '

Contronot Adonata Stato Redarene 1

approvazione em DescnZione a e, c cwo we ===

Aev Data va.hd

==

... ai.

o,.c c.oa

.c =e w

oeset informa2cn. strettamente nservate ei prooneta Ansanoo S o A. . Os non, utdezare vn.a inet
  • per neca overs da o

-c a ssowi.e i

r F'"'****' **** "'"' a s e a acon i. ==e = .* m i==.

9310290181 931019 DR ADDCK 05200004 yJj PDR ,'g.)

a a > > . - - , -

lANSALDOI Proeotto Identtricativo esv. Pagina '

prdecW document me. rev. page.

SBWR SBW 5280 TNIX N015 000 1 2 i

s TABLE OF CONTENTS,

1. SCOPE i
2. APPLICABLE LAWS, CODES AND STANDARDS  ;
3. REFERENCE DOCUMENTS
4. EQUIPMENT FUNCTION
5. DESIGN REQUIREMENTS t-5.1. General Design Requirements 5.2. Classification of Components 5.3. Thermal-hydraulle Design Requirements ,

5.4. Safety Requirements ~ y t

5.5. Secondary Side Requirements 5.6. Layout Requirements

6. OPERATING CONDITIONS 6.1. Normal Steady State Conditions 6.2. Transient Operating Conditions and Test Conditions MECEANICAL DESIGN REQUIREMENTS  !

7.

7.1. Code Design Requirements e 7.2. Thermal Stress and Fatigue Analysis ,

7.3. Design Conditions 7.4. Support Reactions 3 7.5. Flow Induced Loads 7.6. Nozzle Loads ,

7.7. Dynamic Analysis criteria ,

7.8. Loading Conditions

8. MAINTENANCE REQUIREMENTS ,

, - . ,- , , n .-. -r.-- ,, , . . ,, , ,- ,

m . , m > - .__ _

, lANSALDOl Progetto gaestigicativo - l g ,, y,,g,,

'P&d# doc uent no. rev. page SBWR SBW 5280'TNIX'N015.000. 1- 3

9. SERVICE REQUIREMENTS 9.1. Water Chemistry
10. CONTROLS, TESTS, INSPECTIONS AND INSERVICE INSPECTION REQUIREMENTS 10.1. General 10.2. Procurement Controls 10.3. Welds Control 10.4. Assembling Controls 10.5. Hydrotest 10.6. Leak Testing 10.7. Visual and Dimensional Examination 10.8. Inservice Inspection Requirements
11. MATERIAL REQUIREMENTS 11.1. Acceptable Materials 11.2. Unacceptable Materials 11.3. Gaskets
12. FABRICATION REQUIREMENTS 12.1. General .}

12.2. Fabrication l

TABLES:

TABLE I PASSIVE CONTAINMENT COOLING CONDENSER CLASSIFICATION TABLE II PRELIMINARY NOIZLE LOADS FOR PCC CONDENSER DESIGN TABLE III LOAD COMBINATION CRITERIA TABLE IV WATER QUALITY  ;

lANSALDO Progetto identificativo. ' Rev.

, DG3eh docurne n t no. rev. jPegina page SBWR SBW 5280 TNIX N015 000 1. 4 FIGURES:

Fig. 1 PCC CONDENSER POOL SUBCOMPARTMENT Fig. 2 CONTAINMENT PRESSURE RESPONSE TO A MSLB Fig. 3 UPSET CONDITION - DYNAMIC LOAD RESPONSE SPECTRA -

HORIZONTAL Fig. 4 UPSET CONDITION - DYNAMIC LOAD RESPONSE SPECTRA -

VERTICAL Fig. 5 FAULTED CONDITION - DYNAMIC LOADING - HORIZONTAL Fig. 6 FAULTED CONDITION - DYNAMIC LOADING - VERTICAL APPENDIX 3 : SBWR MATERIALS REQUIREMENTS FOR AUSTENITIC STAINLESS STEEL MATERIALS IN PASSIVE CONTAINMENT COOLING CONDENSER

- , . - , , , - ~ n

I l

IANSALDOI

  • I

)

l proptto . Idestattestivo new. -jragina

.pso pet document no. .rev. ,page SBWR SBW 5280 TNIX N015'000 l' I 5 l

_l l

-l

1. SCOPE l I

This specification defines the general functional, engineering and construction requ.rements for the Passive Containment Cooling Condenser Units.

9 i

r 4

t t

i 4

eg ,-

t

. 'IANSALDOl-Progetto Iaeattricativo new. Pagina preseW document no. rev. page ,

SBWR SBW 5280 TNIX N015 000 1 6 t

2. APPLICABLE DOCUMENTS, CODES AND STANDARDS  ;

The design of this equipment shall be in accordance with specific  !

codes and regulations as follows:

a) Society of Mechanical Engineers (ASME) Boiler and Pressure vessel Code (July 1989)

- Section II: Material Specifications a) Part A - Ferrous Materials ,

b) Part B - Nonferrous Material c) Part C - Welding Rods, Electrodes and Filler Metals

- Section III, Division 1 and Division 2 - Subsection NCA -

Nuclear Power Plant Components: General Requirements

- Section III, Division 1 - Subsection NB - Class I Components

- Section III, Division 1 - Subsection NT - Component F

Supports

- Section III, Division 1 - AppendiclesSection V - Non-destructive Examination

- Section IX - Welding and Brazing Qualifications

- Section XI, Division 1 - Rules for Inservice Inspection of Nuclear Power Plant Components l

i l

1

. lANSALDOI Progetto Iametificattwo me,. Peglae

-Pr*78 W document no. rev. page SBWR SBW 5280 TNIX N015 000 1 7 b) 10 CFR 50 Appendix A " General Design Criteria for Nuclear Power Plants" c) ANSI /ASME NQA-1-1983 and its Addenda (NQA-la) Edition. ,

(Quality Assurance Program Requirements for Nuclear Facility) r d) ANSI /ASME NQA-2-1983 Edition. (Quality Assurance Requirements for Nuclear Facility Applications) t.

e) US NRC Standard Review Plan 3.6.2 MEB 3-1, Rev. 2, June 1987 f) US NRC Regulatory Guide 1.29 - Seismic Design Classification \;

(Rev. 3) - September 1978 '

g) TEMA - Mechanical Standards Class "R" Heat Exchangers-h) ANSI Standard B.16.25 " Butt-welding Ends" 1979 i) ANSIhtandard N.lB.2 " Nuclear Safety Criteria for the Design of Stationary Pressurized Water Reactor Plants" 1973 j) ANSI Standard N.18.2a " Revision and Addendum to ANSI

n. 18.2 - 1973" 1975 k) ASTM Standard A 262 " Standard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steel" 4

n -~- -

IANSALDO Progetto Identificativo - saw. Pagina projef t document no. rev, page SBdH SBW $280 TNIX N015 000 .1- B

3. REFERENCE DOCUMENTS-a) Passive Containment Cooling System P&lD (107E5160)- T15-1010 b) Passive Cont. Cooling System Des. Spec. (25A5160) T15-1010 t

c) Ccn.posite Design Specification (2]A6723) A11-5299 ,

d) Pressure Integraty of Nuclear Components A11-2029 e) Equipment Environmental Interface Data .A11-4100 f) Low Pressure PCC Condenser Design Checklist - October 26, 1990-g) GEAN 060 - Outline of proposed testing of the SBWR Isolation Condenser and Passive Containment Coolitig Heat Exchanger - November 2, 1990 n) GEMD 195 - HPIC/PCCS Design Information/ Attachment D-February 1, 1991

1) ANGE 129 - HPIC & PCC Basic Design Requirements -

April 17, 1991 j) GEAN 144 - PCC Basic Design Requirements - May 22, 1991 k) GEAN 146 - PCC Basic Design Requirements - May 23. 1991

1) GEAN 212 - IC and PCC Arrangement - Nov 18, 1991 m) QUIK-COMM 5535785 - May 27, 1992 n) Containment Configuration Data Book (25A5044) T10-1030 l

i 6

IANSALDOl-I Proeotto Identificativo Rev. Paglaa

. pmee docament no. rev, page SBWR .SBW $280 TNIX N015 000 1 z9

4. EQUIPMENT FUNCTION I

The function of the Passive Containment Cooling System / Condenser.(3 (

units) is to remove, in a passive way, core decay heat for a minimum.

of 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> post-LOCA, with containment pressure never exceeding I's design pressure limit of 379.2 kPa(g) (55 psig), and with IC/PCC '

pool not being' replenished.

The PCC Condenser is called upon to provide containment cooling at f approximately one hour after a LOCA.

The Passive Containment Cooling Condenser (3 units) maintains the i-Containment within its pressure limits for design basis accidents.

The PCC System is an " Engineered Safety Feature" (EST), and it is a safety related system.

?

f b

O Y 4

s. - e - -

. . . . . . . = . .. , _ . . .. , ~ - . .. ~ -, -. - .. . . . . . . . ~ ..

lANSALDOl  :

Progetto. IdenticLcativo- see. Pagine *

, pta3.eh document no. .rev, page l SBWR SBW 5280 TNIX N015 000- :1 10 >

l'

5. DESIGN REQUIREMENTS i

5.1. General Design Requirements 5.1.1. The Passive Containment Cooling Condenser shall be designed for-10 MWt nominal capacity and will be made of two identical modules.- 1 The units shall be located in a large water pool positioned above, and outside, the SBWR primary containment (drywell). .;

The central steam pipe (10") is vertical and feeds, at the top end, two horizontal headers through two 8" pipes.

Steam is condensed inside 2" vertical tubes and condensate is collected in two lower headers.

The vent and the drain lines from each lower header shall be routed to the drywell through a single containment penetration.

The condensate drains in an annular duct around the' vent pipe and then flows in a 4" line which connects to a larger 6" drain line which also receives. flow from the other header. t 5.1.2. The PCC unit shall be designed to remain.in site, inside the IC/PCC pool for 60 years.

However the PCC Condenser tubes and headers shall be easily removable for replacement, if necessary, during plant shutdowns.

5.1.3. The PCC Condensers shall not fail in a manner that damages.the i safety related ICS/PCCS pool as a result of dynamic loads, including combined seismic, DPV/SRV or LOCA induced loads. [

Failure of PCC Condenser whose rupture, while pressurized, can release steam into the IC/PCC pool (which is safety-related) shall j be limited by either the 10* diameter limit, or by observing the

~

special stress and fatigue usage limit as in ref. paragraph 2.d. or by proof testing using experimental stress analysis cyclic test

. limits of ASME III, Subarticle II-1500, using the thermal pressure, vibration and dynamic load cycling defined in paragraph 6 below.

IANSALDOI ,

Progetto l1dentificativo new. .reglas I protecw document no. rev. page SBWR SBW 5280 TNIX N015 000 1 11 5.1.4. The location of the PCC Condenser tubes in the PCC pool shall be such as to guarantee the required performance for.72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> minitum, being the pool capacity 3640 m3 and the pool depth 4.4 meters. >

s P

b I

O

,s t

6

?

,i 4

6 y , , _ . , . - _ . ,. , .-. , .- - . , . . . , - . - _ _ _ _ _ _ _ _ _ _ _ - - - - - -

-lANSALDOl

?

Progetto raentificativo set. Pagina

_ pto}eh document no. rev. page SBWR SBW $280 TNIX N015 000 l1 12 5.2. Classification of Components

-The classification of the PCC Condenser, with respect to functional requirements and structural integrity, is given in Table I.

l 5.2.1 Safety Classification The Passive Containment Cooling Condenser is an extension of the containment pressure boundary.

All PCC Condenser parts are to be considered of Safety Class II.

Therefore, ASME Code Section III, Class II and Section XI requirements for design and accessibility of welds for in-service inspection apply.

9 5.2.2. Seismic Category All Passive Containment Cooling Condenser parts are to be considered t of Seismic Category I.

5.2.3. Quality Aksurance The Passive Containment Cooling Condenser must be in accordance with referenced documents 2.c and 2.d. I I

5.3. Thermal-hydraulle Desian Requirements 5.3.1. Performance Each Passive Containment Cooling Condenser shall be designed for 10 Mwt heat removal capacity.

Tube surface has to be defined at the following conditions:

lANSALDOl Progetto

. ps.e}ew identificativo me ,. Paglaa document no. rev. page-

.SBWR SBW 5280 TNIX NOIS 000 1 13 a) pure saturated steam at 134 *C and .298 kPa '(absolute);

  • b) water pool temperature at 102*C and atmospheric pressure.

5.3.2. Touling The PCC Condenser design shall account for a fouling factor of 2

0.00009 m *C/W (0.0005 he ft2

  • F/ BTU) on the pool side and zero resistance on the primary tube side.

n '#'

WPArts E/yW;ns: AM/n+1m+1 c /tpVfd/Fj ? ' ~ N 'I'

5.3.3. Tube Plugging Because of the PCC Condenser operating conditions, no plugging margin shall be considered.

5.3.4. Primary Side Pressure Loss The primary side pressure loss for PCC Condenser and vent line shall be limited to less than 850 mm of hot t ater (T= 71*C, consevatively).

b

. - .. .- .. .. ., . = - . . .

IANSALDO  !

1 Proestto Identiricat!*o aov. Pagina .

pre.iact , document no. rev. page SBWR SBW 5280 TNIX N015 000 1 14 i

5.4. Safety Requirements ,

5.4.1. The commen cooling pool that PCC Condensers share with the IC's of ,

the Isolation Condenser System (B32) is safety related.

5.4.2. As protection from missile, tornado and wind, the Passive Containment Cooling Condenser shall be located in a subcompartment of the safety related ICS/PCCS pool.

The units shall be separated such that damages to one PCC or IC unit will not functionally disable the other units.

5.4.3. The PCC Condensers shall not fail in a manner that damages the safety related ICS/PCCS pool as a result of dynamic loads, including combined seismic, DPV/SRV or LOCA induced loads.

t 5.5. Secondary Side Requirements 5.5.1. Tube Uncovering The location of the PCC Condenser tubes in the IC/PCC pool should be such as to guarantee the required performance as well as to prevent the possibility of uncovering the tubes within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> minimum from the initiating event, being the pool capacity 3640 m3 and the pool o depth 4.4 meters.

5.5.2. Pool Inventory Loss g f The moisture content of the steaa leaving the vent pipe shall not exceed 2% of the mass flow of the steam generated in the ICS/PCCS pool. ,

S

- ^ ' *

~. . . - ~ , ._ ~ ..

lANSALDOl' i

Progetto identificativo aev. Pagina ,

p aect document no. rev. page j

- -** SBWR SBW 5280 TNIX N015.000 'l- 15 5.6. Layout Requirements 5.6.1. General Arrangement The PCC Ccndenser shall be located above the drywell outside the-  !

primary containment.

The central steam supply line (10") penetrates the containment roof

'I slab vertically and, at the top end, feeds two horizontal headers ~

through two B" pipes. The steam is condensed inside 2" vertical tubes and condensate is collected in two lower headers. From each lower header, tne condensate return line and the non-condensable gases vent line, arranged in a single concentric tube, shall be routed to the drywell: the condensed steam shall be drained to the l GDCS pool and the gas shall be vented to the suppression pool (wetwell space).

t 5.6.2. Arrangement Cor st ra int s The location of the PCC Condenser units with their associated piping in the IC/PCC pool shall be compatible with the Containment Building layout limitatior.s of and structural requirements for the drywell top slab, i.e.: ,

1. a maximum pool depth of 4.4 meters
2. the steam supply, vent and drain pipes connecting to the PCC ,

Condenser shall be routed through the containment roof slab.

3. the PCC Condenser pool subcompartment is defined as follows:

a) gemetrical boundaries:

- pool bottom elevation = 25300 mm (,

- bottom elevation of the slab above pool = 31100 mm

- rectangular base of $450 mm by $475 mm b) the PCC Condenser primary containment penetrations shall be located as follows:

- 10" central steam pipe, as shown in figure 1; j

- 12" drait. line and 8" vent line, concentric, as shown I

in figure 1.

I I

i

b lANSALDOl .

i

?

i Progetto Ideetiricativo now. .Peglas

- pee;eow document no. .rev. page l SBWR SBW 5280 TNIX N015 000 1 16

6. OPERATING CONDITIONS

?

6.1. Normal Steady State Conditions _,

t I

The normal steady state conditions.for the PCC Condenser is the standby condition, during whicht a) the containment conditions are the followings ~ air or nitrogen- f with 50% relative humidity-in tubes; pressure of 0-13.8 kPa(g)

(0-2 psig), temperature cf 10*C to 60*C (50'F to 140'r);

b) the pool water is at the temperature 10'C. to 60*C (50*F to 140*F).  ;

P 6.2. Transient operatino Conditions and Test Conditions f

d The expected transient conditions during the. component lifetime which shall be analyzed for their effect upon the PCC Condenser, are i listed in the following subsections:

r 6.2.1. Upset Conditions (Moderately Frequent Transients)

ASME Code Section III, Class 2, Level B Service Conditions limits l apply for the followings a)4lsteamandgassixture(steam, nitrogen,oxygenandhydrogen) l heatup cycles where pressure and temperature in the tubes ,

increases to 379.2 kPa(g), 151*C (55 psig, 303*r) (see figure 2 for pressure versus time plot). \

f Pool water coolant temperature outside the tubes rises f rom i j

10'C to 100*C (50*F to 212'r).  :

i b) 1W equivalent dynamic load excitation input cycles (including ,

seismic) with 10 response acceleration cycles per excitation '

cycle (see figures 3 and 4). .

. , ~ ~- . - . _ _. , _ . . .. . . . . . . . . .

lANSALDOl .

f 3

Progetto Identiricat190 Res. Peglas- ,

_ ptgach document no. rev, page -!

SBWR SBW $280 TNIX N015 000 1 17 6.2.2. Faulted Condition (Postulated Accident) - Case 1

-i Maximum combined SSE, DPV/SRV, and LOCA loads (see figures 5 and.6)- A concurrent with a pressure and a temperature of 379.2 kPa(g), 151*C (55 psig, 303*F). ASME Section III, Class 2, Level C Service ,

Condition stress limits apply for this load combination. ,

~

special verifications in particular areas in order to guarantee the-functionality of the equipment shall be provided.

Occurrences: less than or equal to 10E-06 events / year.

6.2.3. Faulted Condition (Postulated Accident) - Case 2 The steam and gas mixture (steam, nitrogen, oxygen and hydrogen)  ;

pressure and temperature in the tubes increases as in the cycle above (para. 6.2.1.a) during the initial 380 sec. (see figure 2 for ,

pressure versus time plot). Thereafter, the pressure and temperature ,

in the tubes increase to 758.5 kPa(g), 171.l*C (110 psig, 340*F) in 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. Pool water coolant temperature outside the tubes i

rises f rom 10*C to 100*C (50*F to 212*F).

ASME Section III, Class 2, Level C Service Condition stress limits apply for this load combination. ,

Special verifications in particular areas in order to guarantee the functinnality of the equipment shall be provided.

Occurrences: less than or equal to 10E-06 events / year.

. 6.2.4. Test Conditions  ;

a) Containment pneumatic pressure test cycles at 448.2 kPa(g) (65 psig) and ambient temperature ( 49'C max. (120*F max. )) . I Occurrences: 1.

b) Containment pneumatic leakage tests (ref. para. 2.b Appendix J, Type A tests) at 379.2 kPa(g) (55 psig) and ambient temperature .

(49'C max. (12 0

  • F max. ) ) . Occurrences: 30.

c) PCC Condenser pneumatic post maintenance leakage tests at 758.5 kPa(g) (110 psig) and ambient temperature (60*C max. (140*F sar.)). Occurrences: 60.

'I IANSALDOI ,

Progetto Iaestificativo set. j Pagina - g

, pr.c3eh document no. rev. 'page SBWR .SBW 5280 TNIX NOIS 000 ' 1 18 1

7. MECHANICAL DESIGN REQUIRDENTS ,

7.1. Code Design Requirements =i Overall equipment parts: ASME Section III Class II. ,

i 7.2. Thermal Stress and Fatique Analysis A thermal stress evaluation shall be performed in accordance with ASME Code Sectic , III rules using the special design stress limits defined for the applicable materials. .

An assesment of the fatigue resistance of the equipment shall be i made, taking into account all the specified cycling loads consideration shall also be given to flow induced vibration and-cyclic venting of non-condensable gases.

7.3. Design Conditions _

Design Pressure 758.5 kPa (g) (110 psig)

Design Temperature 171*C (340*r).

Design life 60 years The temperature design value is based on the drywell response to a design basis loss-of-coolant-accident. j 7.4. Supoort Reactions I The support foot reactions are those forces, at the point of attachment of the external support, that each support foot shall l

sustain without exceeding the stress intensity limits of ASME III, Class II.

The umbrella reactions for each foot shall be evaluated and are to be used in the PCC Condenser design.

F lANSALDOl  !

Proeotto Iaentificativo Rev. Pagina

, pryJeg document no. rev. page ,

SBWR SBW 5280 TNIX.N015'000 . 1 19 i

7.5. Flow Induced Loads e

The PCC Condenser shall be designed to minimize the effect of' flow' induced loads. The potential for flow induced vibratien damage  ;

shall be assessed at the exchange tube bundle and at weld attachment locations between tubes and headers.

Potentiality for vibrations arise from:

- the primary steam and condensate flow inside tubes -

- the secondary flow outside the exchange tubes, due to natural circulation of the PCC pool subcompartment.

Experimental evidence of absence of induced vibrations might be '!

considered satisfactory. '

I i 7.6. Norrie Leads i

i Nozzle loads are those forces, at the point of attachment of piping i to the PCC Condenser headers, resulting from differential thermal #

growth, seistic and LOCA conditions. ,

The preliminary nozzle loads at the PCC Condenser interfaces with the piping lines are assumed to be as defined in Table II.

')

Additionally the thermal stresses caused by pipe-material 'l4 differences or size discontinuity shall be included. l l

.I i

, 7.7. Dynamic Analysis Criteria The Floor Response Spectrum method shall be used. The response spectra shown in figures 3 and 4 apply for dynamic loads.resulting from combination of OBE and DPV/SRV loads (upset conditions).

The response spectra shown in figures 5 and 6 apply for _ dynamic loads resulting f rom ccabination of SSE, DPV/SRV and LOCA loads (component emergency conditions).

A three directional dynamic excitation shall be considered. I The Square Root of the Sua of -ne Square (SRSS) combination of medal contributions shall be performed. ,

l I

+.

, IANSALDO Progetto IaentifIcatiwo Rev. PegLas pt:fe# docament no. rev. page SBWR SBW 5280 TNIX NOIS 000 '1 20 7.8. Loadino Condittens The PCC Condenser and its component parts shall be designed to withstand the loads resulting from the combinations defined in Table III.

f i

t

-,m-- .,

ANSALDO Identiricativo Rev. 'Pagine Proeotto rev. page  !

preryeeW docament no.

SBWR SBW 5200 TNIX N015 000 1 21 B. MAIttfENANCE REQUIRE 3ENTS

- No preventive maintenance actions are expected to be performed ,

during notaal plant operation.

- The PCC Condenser headers pool and piping shall 1,e arranged so that the heat exchanger tubes can be plugged if needed.

Plugging will be done during plant shutdown.

- If there is considerable damage to some component part of the PCC Condenser, each module of the unit shall be easily removable, after cutting the feed and drain lines.

- The pool water in the PCC Condenser subcompartment shall be  ;

removable without emptying the entire ICS/PCCS pool.

l 3

4 1

1 l

l i

l l

l l

s

ANSALDO  :

Progetto Identificativo Rev. Pagina-

. peop p document no. rev. page '

SBWR SBW 5280 TNIX N015 000 1 22

9. SERVICE RBQUIREMENTS 9.1, Water Chemistry The PCC Condenser shall be designed to operate satisfactorily with the water chemistry indicated in Table IV.

?

+

i i

s 5

i l

t l

ANSALDO i Progetto

. gejeg !aentiricat Leo not. .Pagina document no. rev..'page SBWR SBW 5280.TNIX NOIS 000 1 l 23-

, 10.

COffrROLS, TESTS, INSPECTIONS AND INSERVICE INSPECTION REQUIPJ!lMENTS f t

10.1. General a

\N Applicable Non Destructive examination methods are: Ultrasonic t.

(UT), Radiographic (RT), Magnetic Particle (MT). Liquid Penetrantf_

~

(PT), Eddy' Current (ET), Visual Examination (VT), Leak Testing. l 4 Before NDE begins, the Supplier shall prepare'NDE procedures and- '

drawings or sketches detailing the essential variables of the ,

applicable method. The procedures-shall be consistent with j

applicable Codes and Standard and shall be svo~?P to the Custemer for approval.

In addition to the requirements of ASME Code Section III NC, the following requirements apply. -

10.2. Procurement Controls controls shall be performed consistent with procurement specification requirements. The following specific requirements ,

apply. t 10.2.1. Headers and Headers Covers D

4 Forgings shall be examined according to ASME Code,LSect. V Art. 23, SA - 745

  • standard practice for ultrasonic examination' ,

of austenitic steel forgings" with the following additional  ;,

requirements. '

i 10.2.1.1. Preparation of forgings  !

The headers hollow forgings shall be UT erasined after heat treatment and after rough-machining to provide cylindrical. i surfaces for radial examinations the ends of forgings shall be  !

machined perpendicular to the axis of the forgings for the axial examination.

f.

1ANSALDO Proeotto Identificativo mov. 'Pseine proje document no. rev. lpage SBWR SBW 5280 TNIX N015 000 1 ' 24 l The headers covers forgings shall be UT examined after heat i

treatment and after rough-machining to provide faces flat and  ;

parallel to one another.

The surface roughness of exterior finish shall not exceed 250 micro in. (6.3 sieron).

  • The UT shall be performed prior to drilling holes, tapers, ,

grooves or machining sections to contour ,*vtruded nozzles. ,

10.2.1.2. UT Procedure .

The heaoer? oc'. c.w forgings shall be radially and axially scanned.

r using atraight Leni ' Art.nique.

In addi*. 4 .e the tW'.iew forgings shall be examined by angle beam ,

technique f erir the catside diameter in two perpendicular directions.

The headers covers forgings shall be UT examined using a straight-beam from at least one flat face and radially from from the .

[4 circumference. l If radial penetration is not possible due to attenuation or to l the curved shape of the cover, angle beam examination directed  ;

radially may be substituted in place of radial straight beam.

10.2.1.3. Quality Level

'l The applicable quality level for straight beam examination shall be SA-745 Par. 12.1.1.1 (a) QL-1, for angle beam examination ,

shall be SA-745 Par.12.1.2.1 QA-1. If 10.2.1.4. Acceptance Criteria 1

Acceptance criteria for straight beam examination shall be in 4 accordance with SA-745 Par. 12.1.1.1, for angle beam examination i e shall be in accordance with SA-745 Par.12.1.2.  !

)

1 1

lANSALDOl .

Progetto Identiricativo set. Peginau

. pre ecs , document no. rev. page SBWR SBW 5280 TNIX N015 000 11 25- r 10.2.2. Distributor Fittings for Distributor shall be Ultrasonic examined after final heat treatment according to ASME Code Sect. III, Div. 11 NC-2550 i ,

. with the following additional requirements.

10.2.2.1. The surface roughness of exterior finish shall not exceed.250 micro in. (6.3 micron).

10.2.2.2. Fitting.shall be examined in two circumferential directions, as )

defined in NC-2552.1, and in two axial directions.

10.2.2.3. The reference specimen shall be in accordance with NC-2552.3 (a) and (b) with the following additional requirements.

- The reference specimen shall contain two axial standard defects (notches), on the outside and inside surfaces, and two t

circumferential standard defects (notches), on the outside and inside surfaces.

- Notches shall be 5% of nominal wall thickness (or 0.10 mm l' whichever is larger) in depth,'60 degrees V-shaped and 25 mm or-less loag.  ;

.i 10.2.2.4. Repair of defects by welding is not permitted. -!

1 10.2.3. Pipes Pipes for main steam line, feed line and drain line shall be  !

Ultrasonic examined after final heat treatment and before bending i according to ASME Code Sect. III, Div. 1 NC-2550 with the l following additional requirements. I I'

10.2.3.1. The surf ace roughness of exterior finish shall not exceed 250 )

nicro in. (6.3 micron). l

- . ~ - - - .

lANSALDOI Progetto lasstificativo saw. Fagine

, pr.238Ch document no. rev. page SBWR SBW 5280 TNIX N015 000 f1 26 10.2.3.2. Pipes shall be examined in two circumferential directions, as defined in NC-2552.1, and in two axial directions.

4 10.2.3.3. The reference specimen shall be in accordance with NC-2552.3 (a) and (b) with the following additional requirements.

I

- The reference specimen shall contain two axial standard defects (notches), on the outside and inside surfaces, and'two r circumferential standard defects (notches), on the outside and inside surfaces.

- Notches shall be 5% of nominal wall thickness (or 0.10 mm whichever is larger) in depth, 60 degrees V-shaped and 25 mm or less long.

10.2.3.4. Repair of defects by welding is not permitted. (

10.2.4. Tubes Tubes shall be examined before bending according to the j ,

requirements of the previous Par. 10.2.3. (Pipes), g- i As an alternative to the Ultrasonic examination, an Eddy Current examination according to NC-2554, shall be made.

After bending, tubes shall be PT examined according to ASME Code Sect. III Div. 1 NB-2556.

i 10.3. Welds Control Welds control shall be performed in accordance with the prescriptions of ASME Code Sect. III, Div. 1 NC-5000 and consistent with approved procedures.

  • Additionally:

. IANSALDOI

.v Protetto Identiricativo aav. Pagina protect a document no. rev. page i

SBWR SBW 5290 TNIX.N315 000 { l 27 a) circumferential butt welded joint in piping shall be examined.

by the radiographic and the liquid penetrant' methods b) tube-to-headers welds shall be surface examined by the liquid. i penetrant method and volumetric examined by radiographic methods c) headers to supports full penetration corner welds shall be surface examined by the liquid penetrant method and volumetric examined by ultrasonic method.

10.4. Assemblino controls '

Controls shall be performed during the overall as. sembling, in i order to verify that:

- tubes are properly positioned in the corresponding header-  !

holes F

dimensions and tolerances are consistent with approved manufacturing drawings:

- all parts which will become inaccessible, are properly positioned and fixex and/or welded and inspected inner surfaces are properly cleaned. l l

10.5. Hydrotest  !

l Hydrostatic tests shall be performed on the PCC modules and subassemblies in accordance with ASNE Code Sect. III.

Final hydrostatic test,of the overall unit shall be performed at .

site. i A---

. m .. . .

i

, lANSALDOI Proeotto Iaestificativo Rev. Pagina -

protet W docament no. rev. page SBWR SBW 5280 TNIX N015 000 1 28-10.6. Leak Testing Leak test shall be performed on the PCC modules in accordance with ASMI Code Sect. V Art. 10 APPENDIX V " Helium mass spectrometer test - tracer probe and hood techniques".

The component is acceptable when no leakage is detected that exceeds the allowable rate of 1 x 10E-04 std em3 /sec (1 x 10E-04 millibar liter /sec).

10.7. Visual and Dimensional Examination The PCC and.its parts shall be subjected to visual and dimensional examination to verify conformance with the drawings and all of the requirements of this specification which do not involve tests.

10.8. Inservice Inspection Requirements

- ISI amount shall be minimized during the design phase (e.g.:

by reducing the number of welds).

- During plant outages routine ISI is required for the PCC .1 Condenser, according to ASME Code Section III and Section XI (requirements for design and accessibility of welds). ,

)

- PCC Condenser removal for routine inspection is not required.  !

l I

- Ultrasonic inspection is required for PCC Condenser tube / header i

welds.

~

- PCC Condenser tubes shall be inspected by the Eddy current method.

l Inspection and leak testing will be done during refueling outages. 'l

. t lANSALDO Progetto Identificat1FO projo set.

document no. rev. ]Pagina SBWR SBW 5280 TNIX N015 000 1 lpage 29

11. l MATERIAL REQUIRDG2rrS -*-

Materials listed in Paragraph 11.1 below are acceptable'for the j application when used in proper relationship with other materials. ,

11.1. Acceptable Materials All materials shall be austenitic stainless steel and shall be h; subjected to the requirements of ASKE Code (ref. 2.a), Appendix 3 of this document, and the following paragraphs.

11.1.1. In the final fabrication condition, wrought austenitic stainless steel shall be in the solution heat treated condition. Heat treatment shall be done at 1040/1150 *C metal temperature, followed' by a approved cooling process.

t Localized heat treatment is not permitted unless qualified for a ,

specific application, j 11.1.2. Grain size and uniformity shall be controlled in the material to provide adequate UT inspectability, where required. I i

11.1.3. Material shall be tested to verify freedom from sensitization according to ASTM A 262 Practice.A (ref. 2.k). '

l l

l 11.1.4. Eardness of cold worked row materials shall not exceed 92 ERB. I Eardness shall be controlled during fabrication by process control {

of bending, cold forming, straightening or other similar -1 operations.

I l  ;

I 11.1.5. Pressure boundary asterials i

a) Pipes for main steam line.

Pipes material shall be SA-312 TP304L with the Carbon content not exceeding 0.0204.

The tubes shall be seamless, hot finished and in solution heat-treated conditions according SA-312.

s . .

lANSALDOl Progetto Idestaricativo Rev. !Pagina pro;eJ t. , document no. - rev. .,page SBWR SBW 5280 TNIX N015 000 1- l 30 b) Fit t irq: for distributor.

Fittings material shall be SA-403 WP 304L, Class WP-S with

  • Carbon content not exceeding 0.020%.

Fittings shall be furnished in heat-"reated conditions. ,

c) Pipes for feed lines.

See previous Par. a).

d) Hollow forgings for Headers, f Forgings material shall be SA-182 F304L with the Carbon not exceeding 0.020%. f Material shall be melted by vacuum furnace followed by l electroslag-consumable remelting and furnished in heat-treated {

conditions according to SA-182 Par. 5.3.

Heat treatment of forging may be performed before machining.

Distributor shall not be machined directly from bar stock.

e) Forgings for Headers Covers.

See previous Par. d).

f) Soltings for Header.

Boltings material shall be SA-193 B8.

g) Tubes.

Tubes material shall be SA-213 TP 304L with the carbon content not exceeding 0.020%.

h) Pipes for Drain Lines and Vent lines.

See previous Par. a). ,

i

1) "Y" forgings for Steam line and for Drain Lines.

See previous Par. d).

1) Forgings for Drain Lines nozzles.

l See previous Par. d).

_ . . ~

4 . .

[ANSALDOl-Progetto lamatificatt 'aev.

Paglas document no.'a sov. page-grsgest a SBWR SBW S280 TNIX N015 000 fl 31-m) Flanges for Steam Pipe and Drain / Vent lines.

Flanges material shall be SA-182 F304.

n) Instrumentation nozzles.

Material for instrumentation nozzles'(2" complete with flange and 1/4" NPT) shall be SA-182 F304L with Carbon content not exceeding 0.0206.

11.1.6. Non-Pressure boundary materials The material for~non-pressure retaining parts shall be in 4

.l acccedance with the applicable ASME or ASTM Specifications. ~j-The material for vent line intake shall be SA-312 TP304, the material for vent line intake cover, for supports and saddlec sr.all I be SA-240 Type 304.

Boltings items for vent intake flange and cover shall belSA-193 B8.

11.2. Unaceeotavle Materials Contamination of the pCC with sulphur, lead, low melting point metals, their alloys, and their compounds shall be proibited during n

fabrication, testing, shipping or erection. Where a satisfactory 4 substitute saterial free of such contaminants cannot be found, the use of such substance for processing and fabricating metals at' room, ,

  • temperature is permissible providing alla surfaces, crevices, blind .

holes, etc., are thoroughly cleaned to remove the contaminant prior;.

to any operation involving elevated temperatures. ,

The Supplier shall submit to the Customer, for approval,- a detailed ' ,

Cleaning Procedure. This procedure shall contain specific :

informations to assure reliable cleaning process of the materials and components during all stages of manufacturing.

i i

i I

l l

l

i

~e.

. lANSALDOl Progetto Isentiricativo . Rev. Pagias project docament no. rev. page  ;

SBWR SBW 5280 TNIX N015 000 ~ l 32 11.3. Gaskets Gaskets shall be metallic 0 - rings of the self-energized type provided with retainer clips.

p!

The 0 - rings shall be manufactured, worked, tested, inspected and certified according to the production standards of a qualified manufacturer.

Material shall be 321 Stainless Steel. .

t l

i I

A lANSALDOI Proeotto rdentiricativo sev. Pagina

,pr2jec y document no. rev. page SBWR SBW 5280 TNIX N015 000 1 33

- 12. FABRICATION REQUIRDEN1'S 12.1 General Manifacturing technology in process of work of the PCC Condenser ,

shall be high level.

The principal manufacturing documents are listed below. l The following list is for guidance purpose and is not necessarily comprehensive.

- Planning

- Engineering schedule 1

- Procurement and Fabrication Drawings

- Tabrication plan and description of the activity e

- Procurement Specifications

}

- Control Specifications .

- Manufacturing procedure Specifications

- Welding Specifications

- Welding book

- Final Manufacturing Report to be submitted to the Customer after completion of the PCC and before its shipping to the plant site

- Technical Manual 12.2 Fabrication Manufacturing procedures shall meet the general requirements. listed in Table I and the prescriptions detailed hereinafter. .

i 12.2.1. Material Procurement i i

i Material procurements shall be carried out to meet the l prescriptions of Paragraph 11. and according to the relevant specifications, approved, if required, by the Customer.

L

. lANSALDO  ;

Progetto Identificativo Rev. , Pagina pe rf eit" document no. rev. page SBWR SBW 5280 TNIX N015 000 1 34 12.2.2. Thermal cutting Thermal cutting of pressure retainig materials and weld' preparation ,

shall be made by plasma cutting process only.

No other type of thermal cutting'is admitted.

After cutting, a minimum of 1.0 mm of material shall be removed by' machining or grinding.

12.2.3. Welding 3

Welding p'.ocedures and weld procedure / operator qualifications shall be consistent with ASME Code Section IX.

I 12.2.4. Heat Treatment Heat treatments shall be in accordance with Appendix 3.

The values of the main parameters of these treatments shall be reported to the Customer.

12.2.5. Repair Welding i l-Repair to welds - They may proceed without prior Customer approval, provided that the repair procedures are consistent with I welding specification requirements and that the repair is properly recorded. Weld repairs shall not be done more than twice.

Repair to base material - No repair to base material shall proceed without prior Customer approval.

12.2.6. Surface Protection A detailed Surface Protection Procedure shall contain specific informations to assure reliable process control of the materials and components during all stages of manufacturing.

The surface protection treatment shall be provided for manufacturing time, according to the prior program to be ,

established by the Supplier.

,. g

-lANSALDOI: a 4

Proestto Iaestificativo set. Peglas prolegt document no. rev. page SBWR SBW $280 TNIX NOIS 000 1 '35 l i Exposure of austenitic stainless steel ~to substances containing. i chloride or fluoride ions is to be avoided.

Where manufacturing or inspections processes necessitate exposure' to chloride or fluoride ions,'all finished surfaces that may have been so exposed shall be thoroughly cleaned with approved cleaners or solvent to ensure freedom from contaminants.

Grit blasting shall not be performed on surfaces in contact with .

water, l-i '

1

'l.  ?

12.2.7. Cleaning lp Manufacturing and welding procedures shall include precautions against contamination by-such items mercury, lead, zinc, cadmium or other low melting point metals.

All surfaces shall be cleaned prior to heat treatment.

_{

Welding procedures shall prevent the contamination of the the I' deposited weld metal by a temperature sensitive crayon. l No cleaning of hot formed austenitic stainless steel material by .5 ,

acid pickling shall be performed.

Water used for cleaning or' testing the component shall be according to applicable procedure. l  ;

Cleaning procedures, solvent specifications and packaging '!

procedures shall be submitted to the Customer for approval, i l

, I l

1 - . 4 e , , - - . , , - . . , . , , . - . , . . _ , -

1 l e.

I l

- lANSALDO Iaestificet! Rev. Pagina Progetto project docunemt no.'O rev. page SBWR SBW 5280 TNIX N015 000 l1 36 TABLE I PASSIVE CONTAINMENT COOLING CONDENSER CLASSIFICATION ANSI Safety Classification Class -2 ASME Code Classification Class 2 Quality Assurance Group B Seismic Category 1 i

l a

L I

s i

1 1

I J

- i 4

'_ " 2 "8

g _ ___ _ ,

I lnad i Plant Condition l l (note 1) I g ,

  • m I I I I '

i i 1 and 2 1 3 1 4 g h j i I I I g 3 I x I I I g 5

I Anini or Shears- 1 I I g I Transwerge 1 0.050 Ap Syp I 0.055 Ap Syp I 0.07 AeSye i N l l l 9 >

l lQ g

2 I I I i M

I I I g

I Bending Moments 05 b'gP y f"

I I 0.25 2p Syp I 0.30 Zp Syp I f I (N ,m } "

I I I I y 9 U

i I I I 3 ~

i Torsional l Moment 1 0.25 2p Syp I 0.30 2p Syp i O.35 Or by P I

  • g!

= $" -

[W ap3 I I I I y g3 ,

I ~ ,e NOTE 1:

8 3 ?:1 3

The six components of nozzle loads are annused to be applied simultaneously.

en H E z o B E

Ap = Cross sectional area of pipe metal. (am } 'j g Syp - Tensile yield strenght of pipe material at design temperature, (U fa,)

2p - Section modutus or pipe. "[mmI) _

g u

a *E

. IANSALDOl' presetts Idesstricatteo- see. Peglaa pro:ect document no. rev. page SBWR SBW 5290 TNIX N015 000 l1 38-TABLE III LOAD COMBINATION CRITERIA Plant Conditions Lead Combination Service' Level Deadweight, Design Design ,

Pressure, Design Temperature, OBE 1 Deadweight, Normal A.(Normal)

Conditions 2,3,4 Deadweight, LOCA B (Upset)

Opeating Conditions, OBE + DPV/SRV Dynamic Lead 4 Case 1 C (Faulted)

Deadweight, LOCA Operating Conditions, SSE + DPV/SRV + LOCA Dynamic Load i

4 Case 2- C (Faulted)

Deadweight, Severe Acoldent Operating Conditions Test Deadweight, Test Test Pressure + Temperature

- _ -. . - . . . . . ~ _. . .

.. l IANSALDOl-Progetto temmtiftestivo ase. PegLas prelect document no. rev. page

~~~*

sawR SBW 5290 TNIX N015 000 1.~ 39  ;

i TABLE IV WATER QUALITY (See Notes 1 & 2)

RZACTtX WATER mht.YYY FARAMrfn RTETEM MRIM Chloride (ppb) 20.0 sulfate (ppb) 20.0

- Conductivity *e at 25'c (ms/se) 0.3 (1.2*)

Silica (ppb as $10 2) 1000.0 pH st 25'c min 6.2 (S 6*)' ,

aan 8.0 (8.6*)

con 10$10N PRODUCT META 13 (sabi To Insoluble 20.0 Soluble  ;

1.0 Cu Total ,

All Other Metals 1.2 Sun 30.0  :

  • Operating values thange to these values during plant

' shutdown. Otherwise, operaties and shutdown design values are the same.

    • Does not include an incremental seehetivity value of 0.Ses/en at 25'c due to earben diemide free air la water stored la tanks open to the annosphere.

Note 1: The values gim are for reatter mater quality during reester ,

operettee and abetdown essept as noted by asterisk.

  • Note 2; PCC peel water quality is the same as reacter water quality at shutdown design values.

-emy.y c- 4 -r r*.m* -'+ym-d it*- e7-D- p. -

w +m

. i IANSALDOl FroTotto Ideettf!cativo tee. Pagina

  • project document no. ev. page.  !

-- l SBWR SBW 5280 TNIX N015 000 l1 40  ;

1 FIGURE 1 E

PCC CONDENSER POOL SUBCOMPARTMENT i

V E723

- - 1165 r- II -

( (

e e

~

l g I 5475 l0

.anapenorr 0 Ol ymtm/vtut, '

t e

~

3155 _ . . - . . - . . _

5458 l

V L

0 32100 i 1 I

\ l 1 I ~

G 31100 L- J v 29700 Y,

  • U 25%)0

-1 n 23300 l

t IANSALDOI .

zematar tomti= now.

, Q 4-- . .... m..1ma SBWR SBW 5280 TNIX N015 000 'l 41 ,

FIGURE 2 1

CONTAINMENT PRESSURE RESPONSE TO A MSLB s

DW ANO WW PRESSumE TO LESS THAN 3792 Kfa(f (5 pee AT 72 toss D" N AND'008 (TsMPenAnsu: 151*c)

"N '.

so _

e e

l WETWELA PRES $UME w

3 I 30 0 400 W0 me 1000 0 3 10 TSE (sesenes) 9 9

e IANSALDOl l Identificativo new. Pagina Proqpetto rev. page pro 2tst. _, document no.

SBi/R SBW 5280 TNIX N015 000 l1 42 1

.1 FIGURE 3 UPSET CONDITION - DYNAMIC LOAD RESPONSE SPECTRA

- HORIZONTAL -

(Service Level B limits apply) l l i i h I 8 \

I 't i

i 1 1 't i \

4 I 1 i l i 1 I 1

  1. 1 l

I 3 I 5

- a l

  • I I

w _

3 O

N J f

I

L J

I I

I I

1 I \

1 _s w , [b i

0 10 100 g3 0.1 MW3WMCT $4158 1

i

ANSALDO Progetto Identificativo Rev. Pagina document no. rev. page proget SBWR SBW 5280 TNIX N015 000 l1 43 FIGL7E 4 UPSET CONDITION - OYNAMIC LOAD RESPONSE SPECTRA

- VERTICAL -

(Service Level B limits apply) 10 i

ma f \

f 1

/ 1 I 1

/ 1 1S f g

  1. 1 2" 1

/ I 3 , i I

I

[ J \

f.

1.0 5 r 1

I I '1 1I 1 W l 1

1 0.5 1 Um_

IA '8 t1 N M SEIMI  !

l i

IANSALDO -,

k Progetto Identificat!*e. Rev. Pagias

- project document no. rev. page -

~~

  • SBWR SBW 5280 TNIX NOIS 000 1 44 l t

rIcuar s  :

FAULTED CONDITIONS - DYNAMIC LOADING HORIZONTAL - .

t I

(Service Level C limits apply)

I e

g W ~m m

, -= ,

I  %

i i E 'k

  1. t X i

! E =

.I  %

J K

$ , i i i  ;

I \

E > -

g-4 I E E

$ I s , .

.i*

I 2r [

B l I I L I 1 1 1 '

- .m.mmeen. -.mmmmme.mame.emamus.mmmanimm ems =-mammamanua.=maa= mismos t -_miiEm

- h- ..7',

.=m .

?

i 0 e at lA 18 45 l

t l

lANSALDOI Progetto tematificatteo Rev. Pagina project document no. rev. page

-- SBWR SBW 5280 TNIX N015 000 l1 45 FIGURE 6 FAULTED CCNDITIONS - DYNAMIC LOADING

- VERTICAL -

(Service Level C limits apply) 10 LS - -

2 r i f n 9 1 2,2 1 n

L5 i a 's s

g ,

1 y

1.5 [ 1, y , s

" 's , s ;

v (L5 gg SA

-w . _ . ..

E

. lANSALDO .

Pr q tio Identificativo tev, Pagina - 2 pro;ect docuent no. rev. page.

SBWR SBW 5280 TNIX N015 000 1- 46

-i d

-APPENDIX 3 i

e i

^l SBWR MATERIALS REQUIREMENTS I

FOR l

AUSTENITIC STAINLESS STEEL MATERIALS ,

IN  !

PASSIVE CONTAINMENT COOLING CONDENSER r

l JUNE 28, 1991 ,

1 l

l 1

\

J

lANSALDOI f

Progetto Identificativo saw. Feelna 5

- P84% document no. rev. page '

SBWR SBw 5280 TNIX-NOIS 000 .l 1 47 3.2. Wroucht Austenitic Stainless Steels i

3.2.1. Requirements of this section shall apply to all wrought austenitic stainless steel (such as Types 304 and 316) components i

~

exposed to water or steam environment at temperatures over 100*C, unless specified otherwise.

3.2.2. All materials shall be purchased to specifications prepared for SBWR service. If the components cannot be solution heat' treated after welding or other heat treating operation, unless qualified, the carbon content of the material shall not exceed 0.0204.

3.2.3. Solution Heat Treatment of Austenitic Stainless Steels t

a) In the final fabrication condition, wrought austenitic j stainless steel parts shall be in the solutien heat treated condition. The recommended solution heat treatment is heating to the temperature range of 1040*C to 1150*C with a hold time designed to achieve full solutionizing while minimizing grain growth. Heat treatment shall immediately be followed by quenching or cooling below 205'c such that sensitization is avoided. For crevice applications Type 316L is preferred to Type 304L and for parts for service even at or below 100*C, solution heat treatment and water quenching must be done. Alternate method of quenching such as air quench, are allowed provided the process is qualified and controlled with sensitization tests required in this specification.

b) . Localized heat treatment of austenitic stainless steel is not permitted unless qualified for a specific application.

. lANSALDO PeggettA taentificativo Rev. Pagtaa project document no. rev. page SBWR SBW 5280 TNIX NOIS 000 1 48 3.2.4. Sensitizatien Welding of wrought Type 300 series austenitic stainless steel is considered to cause sensitization. Sensiti:ed wrought austen' i tic stainless steel shall not be used. Austenitic stainless is considered to be sensitized if it has been heated within the temperature range between 430'C and 980*C regardless of. the subsequent cooling rate. When heated above 430*C, the austenitic stainless steel material shall be solution heat treated in-accordance with paragraph 3.2.3. Type 316(NG) or Type 316L and Type 304(NG) or Type 304L mater'ial with 0.020 percent maximum carbon is exempt from this requiroment during welding'provided it ,

is in a solution heat treated condition prior to welding.

3.2.5. Austenitic Stainless Steel pipe or Tubina Wrought austenitic stainless steel pipe or tubing shall be Type 304(NG), Type 304L. Type 316(NG), and Type 316L to an applicable SBWR materials specification. For parts tnat cannot be solution heat treated after welding, only Type 304L or Type 304(NG) for non-creviced parts, or Type 316(NC) or Type 316L for. creviced parts with 0.020 percent maximum carbon material shall be used.

Other stainless steels qualified for SBWR service such as Type 347 Modified are also acceptable.

t 3.2.5.1. Cold bending or forming shall be controlled such that hardness in the final fabricated condition shall not exceed Rockwell B 90 for ,

Type 304(NG) and Type 304L and Rockwell B92 for Type 316(NG) and l Type 316L. Hardness values shall be reported on the Materials Test Report. Brinell hardness equivalent to Rockwell B may be used.

lANSALDO Progetto Iaestific.ativo see. Pagina pre ec W document no. rev. page SBWR SBW 5280 TNIX NOIS 000 1 49 3.2.5.2. Bending of Austenitic Stainless Steel U-Tubes a) U-Tubes shall be cold bent. The ovality of a U-tube at any cross-section shall not exceed ten percent of the nominal tube diameter. A qualification sample of the smallest bend radius shall be sectioned to verify the minimum wall thickness requirement specified on the drawing.

b) All U-tubes with a bend radius less than twenty times the tube diameter shall~be solution annealed. The solution annealing temperature shall be 1040*C to 1150*C followed by water quenching or air cooling to below 205'C within five:

minutes. This stress-relief annealing process shall be qualified per 1.69 Qualification shall be performed on tubing sections taken from the middle of a U-bend and the hot / cold transition' region.

c) The inside diameter of the tubes shall be in a thoroughly clean condition before stress relief anneal of the tube bends. The outside diameter of the tubes in the bent area plus 300 mm on each side shall be thoroughly cleaned in '

unused acetone immediately prior to stress relief annealing of the tube bends.

d) The solution anneal shall include the tube bends plus 150 mm on each side of the bends. The tubes shall be purged internally with a suitable protective atmosphere of twice the volume of the tube before starting localized heat treatment.

The inside of the tubes shall be protected with a protective atmosphere during the entire heat treatment. The flow shall be maintained for a sufficient time to ensure a bright tube ID free of scale and oxidation. The tubes shall be supported during heat treatment to prevent warpage.

w + w + --

. I/LPJ!S/4LE)C)l. j i

Proeotto 'taestificativo . Rev. Pagina

'pri;ic F doc uent no. rev. ;page SBWR SBW $280 TNIX N015 000- 'l I 50 e) Stainless Steel U-tubes shall not be pickled after solution annealing. A light oxide film on the outside surface of a U-tube is acceptable. Smears on-tubes from resistance heating clamps shall be removed. Only--clean stainless steel wire brushes, wool, or other approved mechanical cleaning-devices shall be used on stainless steel tubing, r

f) The U-bent tubes shall be hydrostatically tested after bending and solution annealing.

g) The CD surface of all U-tubes shall be liquid penetrant examined after bending, solution annealing, and hydrostatic-  ;

testing.

3.2.5.3. Induction Bending of Pipe Induction bending of pipe shall be qualified based on the bend radius and the pipe diameter for components to be bent to bend radil of SD and less. Each heat of natorial shall be qualified by bending a test piece and subjecting it to high sensitivity U.T. examination and destructive examination for microfissures.

3.2.6. Weldino Materials for Austenitic Stainless Steel Filler metals for welding austenitic stainless steels shall be selected to be compatible with the base metal (s) to be welded.

Filler metal shall be procured in accordance with applicable ASME Code Requirements. Acceptable filler metal Types are 308L, 309L.

309MoL, 316L and 316LC.

r lANSALDOl-Pragart h Identificativo new. Fagina- '

pro;ect docunent no. rev. page SBWR SBW 5290 TNIX NOIS 000 1 51 3.2.6.1. Ferrite Control For all stainless steel welding materials including consumable inserts for components which operate 100*C the ferrite content shall be not less than 5% (or.5 FN) for each individual reading, and the average shall be not less than 81. Maximum ferrite content shall not exceed 20%. Ferrite content shall be determined on undiluted weld deposits. Ferrite seasurements shall be made in accordance with the magnetic measurement requirements described in ASME Section III, Paragraph NB2433.

The ferrite content and the sethod used for its determination shall be reported in the Material Test-Report for austenitic stainless steel weld metal.

l 3.2.7. Austenitic Stainless Steel Welds 3.2.7.1. Heat Input Controls Welding heat input controls are required for all welds including-repair velds, overlay / cladding welds, weld bead straigntening, ,

and joining carbon or low alloy steel to stainless steel.

AcJtenitic stainless steel components solution heat treated after welding are exempt from these requirements.

a) For manual GTAW and SMAW, heat input shall be limited by weaving and welding technique controls. Non-weaving (stringer bead) welding techniques shall be used where possible. Weaving and technique shall be controlled to meet the equivalent of heat input limits of paragraph 3.2.7.1.b.

b) For automatic (or machine) welding and manual welding with processes other than GTAW or SMAW, welding heat input shall not exceed 44000 joules /en calculated according to the following formulas

i e.

IANSALDO  :

Identiricativo Rev. . Pagina Freest % rev, page pro;ect document no.

SBWR SBW 5280 TNIX N015 000 l1 52 Voltage (l) (volts) x Current (2) (Amps) x 60 >

Heat Input =

?

Travel Speed (cm per Minute)

NOTES:

(1) This heat input is based on the voltage at the arc. _ Voltage may, however, be measured at the welding power supply. If the heat input limit is exceeded when voltage is measured at:

the welding power supply, the voltage may be reduced by an-amount equal to the voltage drop between the power supply and.

the arc. This voltage drop shall be determined by direct measurement for each power supply, welding process, and cable combination.

(2) For pulsing current applications, the weighted average current, according to the formula below shall be used to calculate the heat input.

(High Pulse Current x High Pulse Time) +

(Low Pulse Current x Low Pulse Time)

Weighted Average Current * ,

High Pulse Time + Low Pulse Time 3.2.7.2. The maximum interpass temperature shall be 180*C for all _

stainless steel welds.

3.2.7.3. Socket welds and seal welds shall use the GTAW process (with filler metal added) for at least the root layer (s). Protective f gas back purging is not required, i

e

u l

. lANSALDO

'I l

Progettg Zaestaricativo see.. Pagina pro 3en doewnent no. rev. pa;e - ,j SBWR SBW $280 TNIX N015 000 1 53 3.2.7.4. Dissimilar Metal Welds

  • For austenitic stainless steel to carbon steel weld joints, the carbon steel side shall be clad (or the weld joint' completed)  !

with 309 type weld filler material per the requirements of Paragraph 3.2,6. i Post weld heat treatment of the clad carbon steel may be required, depending on the wall thickness. If cladding is done, '

the joint may be completed with the 309 type material or other 5

weld materials listed in Paragraph 3.2.6.

Ferrite content and weld heat input requirements of Paragraphs "

3.2.6.1 and 3.2.7.1 respectively shall be met.

l 3.2.8. Intergranular Attack (IGA) shall be controlled per the requirements of GE specification E50YP11 for all vrought austenitic stainless steel which during operation is wetted with water at temperature above 100'C.

ICA control shall be applied to raw material and subsequently ,

after any heat treatment above 815'C and any pickling operations.

Where a minimum depth of 0.8 mm of material will be removed from all wetted surfaces after the final heat treatment, no IGA control is requited. Results are to be noted in the Materials Test Report.

3.2.3. All solution heat treated wrought material for service above 100 C shall be tested for sensitization per the requirements of GE specification E50YP20.

As a minimum, one specimen representing each heat treat lot shall be tested for sensitization. The material tested shall be heat treated with the lot it represents. The Materials Test Report for the material shall note the results of these tests.

p i

I

. lANSALDOl 'l l

'l progetto

~ raentif1cativo Rev. Peg Las ;

projec d document no. rev. page SBWR SBW'5280 TNIX N015 000 1 54 3.2.10. Grinding Centrols These requirements shall apply to-final' fabricated-surfaces to be' exposed to reactor water. Abrasive grinding of stainless. steel; ,

heat-affected zenes shall be minimized to the extent possible. ,

Care shall be taken to confine grinding to the' weld metal onlyj i and limit grinding of the adjacent base metal to that' required.to- I meet the f abrication and examination requirements of the ASME : .

Code, this specification, the equipment requirement specification, or support drawing.~ Grinding abrasives and wire brushes'for stainless steel and nickel-chrome-iron alloy.shallo not have been used previously on satorials other'than stainless steel or nickel-chrome-iron alloy. . For wrought austenitic l stainless steel surface to be' exposed to. reactor ~ water, if any; grinding is done and not followed with solution heat treatment, the surface shall be polished to remove the grinding marks to' obtain a final surface finish of 0.8 mm or. finer.

.i 3.2.11. Stress Rule Application for wrouaht Austenitic stainless steels The stress rules are applicable to all creviced components made of wrought austenitic stainless steel (SUS 300 series) and ,

Nickel-Chrome-Iron alloy materials which operate exposed to  ;

reactor water at temperatures over 100*C.

A crevice is defined in Paragraph 3.2.12. A simplified approach to stress rule application is shown in a flow chart presented-in Figure 1. The Stress Rule Index (SRI) calculation shall be made .

for the most highly stressed joint in an assembly. If f acceptable, then all other joints (less stressed-than.the first ,

one) in the assembly are also acceptable. ,

7

lANSALDOl Proestto Iaestit1cativo Rev. Peglaa -

. pen $eh document no. rev. page SBWR SBW 5280 TNIX N0l$ 000 1 55 3.2.11.1. The following stress rules must be met by all creviced-components.

The criteria shall be applied considering the worst substained

(*) stress intensity case.

If the criterion is not met, reapply the same rule considering the worst sustained principal tensile stress case.

3.2.11.2. For all applications independent of neutron flounce.

Pm + Pb Q + F + (RESID)

A= + >

Sy Sy + 0.002E

( 0.7 for creviced SS 304, SS 304L, SS 316, SS 316L, SS 304(NG), SS 316(NG)

( 1.0 for creviced and sensitized 308L, no stress rule is required for non-sensitized 30BL.

For uncreviced stainless steel, no limit is applicable for IGSCC.

Wheres 1

(*)A " sustained = atress is defined as 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br /> or longer during the design life of the component.

r

. 8 l

l a

=

6 lANSA103 t

Progetto d Ideatiricat190- .Rev. Pagina project document no. rev. page SBWR- SBW 5280 TNIX N015 000' 1 56 1

i Pm

  • primary memorane stress intensity

)

Pb

  • primary bending stress intensity ,

i Sy = material minimum ASME Code yield stress at -j temperature l

Q = secondary stress intensity (RESID)= Residual Stress - defined below F = peak stress intensity E = elastic modulus of the material at' service temperature per ASME Code.

Definition of (RESID) a) Within 25 mm of weld (RESID) shall be assumed to be equal to the appropriate value from Figure 2.

b) In all other locations, (RESID) is defined as follows where St is the summation of all compressive stresses.

=  !

RESID 0 if St<Sy

=

St-Sy if Sy*St < 2Sy

=

Sy if St > 2Sy

  • 3.2.11.3. Socket welds in 75 mm diameter pipe or less are exempt from the criteria of Paragraph 3.2.11.

. lANSALDO ProggttA taestiricativo aav. 1Pagina project document no. rev. I page SBWR SBW $280 TNIX N015 000 ]1 57 3.2.12. Crevice Applicatien ,

A crevice is defined by Figures 3 and 4 and Paragraph 3.2.12.1.

t 3.2.12.1. Examples for translating the 3 dimensional crevice definition into 3 dimensions.

a) Drawing (a) shows that for a closed bottom configuration-with one surface exposed to the bulk solution,-the length is to be ignored. Thus, for a given width and depth, any--

length is a crevice.

b) & c) Drawing (b) and (c) illustrate cases where two surfaces- ,

are exposed to bulk solution. In order to be considered a crevice for a given width both of the other dimensions must fall above the file in Figure 3. This is because for any point in the gap a line can be drawn to the bulk solution which is less than or equal to the shorter edge dimension.

d) Non-orthogonal configurations like Figure (d) present a different problem. In this drawing no constant width or depth is present. In cases such as this, the depth should be the distance to the point farthest from the bulk solution and the width should be the average width.  ;

e) & f) For through-drilled holes, the depth to be used in ,

determining whether a crevice exists, is half the actual depth. Again, this is the longest distance to the bulk solution.

g) & h) For parallel plates, exposed to bulk solution on the whole perimeter, the depth is half of the shortest edge dimension, or the shortest disension to the bulk measured ,

from the point farthest from the bulk.

ANSALDO Pts,s% Identificativo

. project document no.

ma v. 'Pagina rev. page SBWR SBW 5290 . NIX N015 000 l' 58 3 2.12.2. If it can be shown experimentally or analytically that flow induces one volume exchange per hour then the configuration is not a crevice.

The requirement applies to austenitic stainless steel material.

where the concern is crevice stress corrosion cracting.

1 I

e

  • Y '

. ANSALDO 1

/P Prgget tA Identificativo Rev. Pegtaa .,

project- document no. rev. page SBWR SBW 5280 TNIX N015.000 ' :1 59 APPENDIX 3 - FIGURE 1 ,

FLOW CHART OF STRESS RULES.

1 I

^i All 300 series materials I (SS 304, SS 304L, SS 316, SS'304L-SS 316L.

SS 316L, SS 304(NG), SHT-CRC SS 304 SS 316(NG), SS 347 MOD.) SHT-SS 304 SS 304 (NG)

SS 316 (NG)

' ~SS 347 mod.-

yes no 30B WELD METAL. .

CREVICE?

if n .

U U NO STRESS RULE 7

IS REQUIRED 308L WELD METAL BASE METAL PWHT AT no A ( 0.7 ,

T >,427 *C l :OR REDESIGN (

1 yes t

u Note: "A" is the left side of the equation shown in Paragraph A ( 1.0 OR REDESIGN 3.2.11.2. 1 l

l I

.1

i l

l

. ANSALDO i Progetto projecte lematificativo Rev. , Peglam -

doewment no. rev. apage j SBWR SBW 5280 TNIX NOIS 000 1 60 l

l APPENDIX 3 -

FIGURE 2 WELD RESIDUAL STRESS ASSUMPTION FOR ANNEALED STAINLESS STEEL SS 304, SS 304L, SS 316 AND SS 316L 8

e Y '

8

~

eE E

l EI5 la a1 v . _

g ss- .

E=

-6 T ;;i 35

!5 .-

25 I 5

E 3

Rl l

1 i

{

_ g i 1 I i I I I I o

S X 2 2 2 O I r&* .asm. ssmus wnoam

. 4 & 4m~4 _ am.--.e a ,mJ- *-*i.:, , W: , MJ.4 e- 4  % e e4m, eW . .,A,, j gA,, ,

lANSALDOl 2

. ==:n = =-

SBWR SBW 5280 TNIX N015 000 1 61. -

APPENDIX 3 - FIGURE 3 CREVICE DEFINITION

~

b / // /

THIS AREAIS A CREYlCE B 254.0 VA MVM&VA 25.4 ,

/ / ,

D b 2.54 1.5mm DEPTH j ' O.1mm W10TH  !

h 0.25 ;

. l MAXNUM ALLOWA8LE GA DEPTH FOR AUSTENmC STAINLESS STEE 0.025 ,

g .

4 UNE CONTACT 5 A CREVICE i 5 ,

0 2.54 5.08 7.62 -

CREVICE WIDTH, mm l

--+- , -yw - w-w -

--g

! i.4SALDOI +

,',',***** xa etrso.es - n. e.,s .

-a document no. re..: page-sawn. saw 52eo' wIx nots ooo lI s2 ,

APPENDIX 3 -

FIGURE ~4 EXAMPLES OF THREE DIMENSIONAL CREVICES 0+ b. C.

Crevice Cmvice Not a Crevice.

- 25 se --. I " I*' "R lenoth , J width *

  • width l] aA [ ,, l 18 j!

I depth 15 ' Ie [

25 mm dept ll. 10 mm t I

i.i.:- __. = 8 e "

) i.

s i

si t j  % 23 as

,d- -

1 25 mm

p a

' ;r l

1 l

i f o  ;- p v,

(.

t _..ss .;

d. Crevice e. Crevice f. Not a Crevice

, 1.9 um dia. 2.25 mm dia.

/ O.

e Q, , ..

/ *8 e i s af a

' 25 h I f

depth ll l8 1

Average ,

I jle '.l-  !

I width -* j 30 m e l , l t / m 2.25 sq; l & V2

/

/ ,

o A / i

' Through holes 35 mm - .

~

25 m a 19 um -------- -

, /s,r'p' l ,

s

,,t__ s' ,L_ s' l 1 1 ,

L T  :

Wielth of gap = 1.9 m Width of gap . 1.9 as .

5 Crevice h. Not a Crevice i i

f

. ANSALDO e

-a SBWR DOCUMENT DATA TRANSMITTAL EDT No. ANCE-0361 e

a) ANSALDO SBW 5280 TNIX N015 000 Rev.1 (06/05/92)

Passive containment cooling condenser equipment requirement specification WBS 3.3.3.1.2 4

4

Retrieved from "https://kanterella.com/w/index.php?title=ML20059B981&oldid=3079545"