ML20039F098

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Forwards Revised B-SAR-205 Positions in Response to NRC Requests 122.1,122.8,122.12 & Classification of Certain Portions of Chemical Addition & Boron Recovery Sys
ML20039F098
Person / Time
Site: 05000561
Issue date: 06/03/1977
From: Taylor J
BABCOCK & WILCOX CO.
To: Boyd R
Office of Nuclear Reactor Regulation
Shared Package
ML111090060 List: ... further results
References
FOIA-80-515, FOIA-80-555 NUDOCS 8201110853
Download: ML20039F098 (16)
v • d • e


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a Babcock &Ylilcox g =ercerer t. crcuo P.o. Box 126o. Lynchburs. Va. 245C5 Te'eenere: (8C4) 384 5111 June 3, 1977 k-\\

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DOCKET STN 50-561 y/ f

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i' D (of Office of Nuclear Reactor Regulation

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@)A ATTN:

Mr. Roger S. Boyd, Director 4

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Division of Project Management 7%? 44 Aj U. S. Nuclear Regulatory Commission h

g Washington, D.C.

20555

Subject:

B-SAR-205 - Revised B5W Positions

Dear Mr. Boyd:

Following recent discussions with the NRC Staff, B5W has established revised B-SAR-205 positions with regard to NRC requests 122.1, 122.8, 122.12 and the classification of.certain portions of the chemical addition and boron recovery (CA 5 BR) system.

To help expedite NRC Staff review and acceptance of these revised positions, we are attaching draft copies of modified responses and text material which will be formally 4

included in the B-SAR-205 with Amendment 16.

We-expect to submit Amendment 16 on or about June 28, 1977.

In summary: 1) the response to 122.12 has been revise d to comply with the Staff recairement that fracture toughness testing shall be conduct a on certain portions of certain ASME Class 2 components; ana 2) the classification of that portion of the CA 5 BR system which includes the concentrated boric acid storage tanks, boric acid pumps, boric acid filters, interconnecting piping and valves, and the boric acid supply lines to the makeup and purification system will be revised to Quality Group C and Seismic Category I.

These revised classifications are in compliance with the NRC Staff position discussed at a meeting held with the Staff in Bethesda, Maryland on May 18, 1977.

This letter is a commitment that the Babcock 5 Wilcox Company will formally include the attached modified material into the B-SAR-205 in Amendment 16.

Very truly yours, l

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James H. Taylor Manager, Licensing JHT:dsf i

l Attachments l

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PDR FOIA The saeccew smcox comcany / Estacuned 1867 771570215 NADDEN00-515 PDR

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Roger S. Boyd Page 2 June 3, 1977 cc:

R. B. Borsum (35N)(2)

U. S. Nuclear Regulatory Commission (1)

Office of Inspection and Enforcement - Region IV 611 Ryan Pla:a Drive - Suite 1000 Arlington, Texas 76012 Mr. Neil Thomasson (3)

Attn:

Loretta Long Office of Radiation Programs Environmental Protection Agency Room 647A East Tower Waterside Mall 401 M Street, S.N.

Washington, D.C.

20460 Mr.

A. J. Oswald (1)

EGSG Idaho, Inc.

P. O. Box 1625 Idaho Falls, Idaho 83401

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Table 3.2-4.

(Cont'd)

Principal R.C.

1.26 construction BW codes and Seismic quality group g g category (d)

.lassification quality class standards Principal components c

C I-3 III-3 1

l16 Conc boric acid storage tank U')

D l-4 Vill Non-Sein.mic Reactor coolant degasifier Degasifier vent valve D

i-4 VIII Non-Seit.mic l15 U')

D I-4 NA f4on-Seismic HC bleed holdup tank C

1-3 III-3 I

lt3 VaIves in safety class 1-3 lines D

I-4 NA Non-Se imat e Others 1.26.

NA - Not applicable to (a)A, B, C, D - Quality group classification as defined in Regulatory Guide P

'lual ity group classi f icat ion.

0 4

(b) Quality classification as defined in section 3.2.2, fluid, electrical, and. mechanical systems.

N (c) Principal construction codes and standards are identified as:

1: ASME Boiler and Pressure Vessel Code,Section I.

111-1, 2, 3, MC: ASME Boiler and Pressure Vessel Code,Section III, Class 1, 2, 3. NF, NG or HC.

Vill: ASME Boller and Pressure Vessel Code, Section Vill, Division 1.

(d) Seismic Category I as defined in Regulatory Guide 1.29 and Appendix A to 10 CFR 100. Non-Scisiale tu 8

defined as other than Seismic Category 1 (e)See NRC Regulatory Guide 1.14.

I'}The RC pump and anotor will be designed to maintain its coastdown capability following the safe shutdown See Table 5.5-1 and section 5.5.1 f or a discussion of classifications of individual compo-earthquake.

y nents.

This equipment is seismically qualified to the extent required to ensure that fuel dainage will not occur.

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8 during inormal and SSE conditions that would release radioactivity in excess of allowable limits. Appro-

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priate QA requirements are applied to ensure that seismic qualification requirements are met, gy O'IClassifications are conditional pending dose calculations for the applicant's individual site (see sec-tion 9.3.4.2.6.16, items 4 and 5).

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B-SAR-205 Amend. 16 s

The seal return line shall be protected against overpressurization d.

due to closed valves.

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The prefilter shall be protected against overpressurization due to e.

temperature changes, ambient The makeup filter shall be protected against overpressurization due f.

to ambient temperature changes.

Related Service Interf ace requirements for instrument air are included in section 9.3.1.

18.

Interface requirements for fire protection are included in section 9.5.

1.

The design of NSS components, supports, and restraints will be coordinated 2.

re with the design of interfacing components and/or structures to ensu 3.

compatibility.

Environmental The plant ventilation system shall provide separate cooling to each of 19.

1.

the redundant HPI train areas.

Interface requirements for ventilation and cooling are included in section 2.

9.4.

Compartment services required for ESF operation of the middle HPI pump can 8

be supplied f rom either ESF train and will normally be supplied from the 3.

same train as the standby HPI pump.

Chemical Addition and Baron Recoverv Svstem 9.3.4.2.

9.3.4.2.1.

Design Bases The CA&BR system performs several functions during plant operation:

evaporator distillate.

Stores reactor coolant bleed and reactor coolant 1.

Degasifies reactor + coolant letdown and/or bleed.

2.

Recovers and stores boric acid from the reactor coolant bleed for reus 3

Removes boron from the reactor coolant by demineralization.

4.

Prepares, stores and transfers chemical solutions.

5.

Stores and transfers the quantities of concentrated boric acid needed to achieve cold shutdown of the reactor with a stuck control rod of greatest 6.

worth at any time during core life under normal operating ' c l16 9.3.4.2.2.

System Descriotion General The The CA&BR system is shown schematically in Figures 9.3 Table 9.3-5 lists the individual component data.

5.2.3.2.

Densser - Degases bleed from the MUSP system to the 1.

The degaser removes hydrogen and radioactive gases.

letdown flow.

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i The biced evaporator concentrates, 5 we % boric ac tank.

evaporator distillate test If the distillate meets specifications, the distillate test tank pumps If the distillate does not to the distillate storage tank.

llate de-meet specifications, it is decineralized by the evaporator disti transfer'it t

mineralizers and rechecked; if the desineralized distillate does not mee ig specifications, it is pumped to the RC bleed holdup tank for reprocess n.

The CA&BR system removes boron from reactor coolant by demineralization.

Beyond 90% of core life the deborating demineralizers pr 4.

bleed water.

The deborated effluent is returned to the system ing demineraliters.

through the batch controller.

9.3.4.2.3.

Safety Evaluation _

Reliability Considerations 5 we % boric acid solution-

[16 The CA&BR system is designed to provide sufficient h the control rod of to achieve a cold shutdown at any time in core life wit greatest worth stuck out of the core under normal operating conditions.

Boric acid solution is supplied to the FW&P system by either of two boric ac pumps (CA-P4A and P43, Figure 9.3-4) from either of tw h

The connection that passes through valve MU&P system (see Figure 9. 3-1).

to the makeup pump supply MU-V21 splits into two flow paths, which connectOne ficw path.af ter M header.

MU-31, filters MU-F2A and MU-F23, and makeup tank MU-T1.

The second 8

af ter MU-V21 is through valves MU-V64 and MU-V65 and filter N connection to the MU&P The makeup pumps de-MU-V30, and MU-V31 into the makeup pump supply header.

liver the boric acid to the reactor coolant system via the normal makeup valve (MU-V46); any of the four HPI lince (MU-V43A, B, C, D); or through,the seal Borated water to effect shutdown may injection valves (MU-V52A, B, C, D).

also be drawn from the B'4ST and routed to the MU pu:.p(s) via redundant _ path

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through valve MU-V32A or MU-V32B.

Sample connections are provided to permit determination of the boric acid con A single failure analysis is shown as Table centration of the stored fluids.

9.3-11.

Codes and Standards Each component of this system will be designed, fabricated, and inspected to Refer to section 3.2 the applicable code or standard noted in Table 9.3-5.

for classification criteria used.

Babcock & 'Nilcox 9.3-18

B-SAR-205 Amend. 16 s

9.3.4.2.4.

Tests and Inspections Fluid sa=ples are periodically taken from the RC system and the auxiliary sys-tem for analysis. The sar.ples are subjected to chemical and radiochemical analyses (as appropriate) to determine boron concentration, fission and cor-rosion product activity levels, dissolved gas concentration, chloride concen-tration, pH and conductivity levels, noncondensable gasses in the pressurizer steam space, and gas compositions in-various vessels.

The analytical results are used to regulate boron control adjust =ents, to moniter fuel rod integrity, to evaluate ion exchanger and filter performance, to specify chemical addi-tions to various systems, and to maintain the proper hydrogen overpressure in the makeup tank.

The system requires no functional testing.

It will be examined periodically to determine its operating condition. Periodic visual inspections and pre-ventive maintenance will be conducted according to sound maintenance practice.

l 9.3.4.2.5.

Instrumentation Application The instrumentation in the CA6BR system, which provides censurements that ate used to indicate, alarm, and interlock, is listed in Table 9.3-6.

The indi-cations and alarms given are typical only.

9.3.4.2.6.

Interface Recuirements This section describes the interface requirements placed by the chemical ad-dicion and boron recovery system on certain aspects of the balance of plant, listed by categories.

In addition, applicable General Design Criteria and Regulatory Guides used in the design of the system are listed. These Criteria and Guides are listed only to show what B&W considers relevant and are not imposed as interface requirenents unless specifically called out as such in a particular interface requirement. The CA&BR system performs no safaty-related function.

It does supply 5 wt % boric acid for reactor shutdown dur-ing normal operation; however, the BWST is designed to provide boric acid for 8

saf ety-related reacqor shutdowns. However, this system does process radio-active fluids, and therefore, certain interfaces have been provided as follows:

Relevant General Design Criteria 1, 2, 3, 4, 5, 13, 17, 19, 26, 28, 29, 60 Relevant Regulatorv Guides 1.26, 1.23, 1.29, 1.30, 1.37, 1.38, 1.43, 1.44, 1.47, 1.48, 1.50, 1.51, 1.58, 1.60, 1.61, 1.64, 1.66, 1.68, 1.74, 1.75, 1.S4, 1.85, 1.88, l'."117

{8 Power The boric acid addition pumps shall be capable of being manually loaded on sep-arate Class lE power supplies. Insofar as practical, all other components hav-ing redundant functions shall be powered frem separate busses.

16 Protection Against Natural Phenomena The CA&BR system will be located in a Seismic Category I structure.

Babcock 8.Wilcox 9.3-19

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-B-SAR-205 Amend. 4 s

f 3.

Pipe '4 hip The CA&BR system imposes no safety-related interf aces in this category as de-i fined in section l.7.

4.

Missiles The CA&BR system imposes no safety-related interfaces in this category as de-4 fined in section 1.7.

i 5.

Pipe Rupture i

The CA&BR system imposes no safety-related interfaces in this category as de-fined in section 1.7.

6.

Separation The CA&BR system imposes no safety-related interfaces in this category as de-i fined in section 1.7.

7.

Independence The CA&3R system imposes no safety-related interf aces in this category as de.

9 fined in section 1.7.

8.

Component Heating and Cooling Components and piping containing concentrated boric acid shall be heated to at i

least 70F to prevent precipitation. The components are the concentrated. boric 16-acid storage tanks (T-7A, T-73), the boric acid pumps.(P-4A, F-43), the boric acid filters (FIA, FlB, and associated valving. The piping that must be heated includes all piping between the components and the makeep system.

9.

System Heat Removal The CALBR system imposes no safety-related interfaces in. this category as de-j fined in section 1.7.

i 10.

Mon 1Lortag Monitoring devices shall be placed in locations adjacent to the system in suf-ficient number to detect abnormal leakage from components and piping that pro-4 i

cess and store radioactive fluids.

I 11.

Operational Controls The CA&BR system imposes no safety-related interfaces in this category as de- ~

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Inspection The CA&BR system imposes no safety-related interfaces in this category as de '

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4 LPI system Other-systems operating for LOCA mitigation which use BWST water The Bk'ST fluid shall be maintained between 40 and 120F.

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The design of NSS components, supports, and restraints will be coordinated 4.

with the design of interf acing components and/or structures to ensure com-patibility.

9.3.6.6.19.

Environmental The plant ventilation. system shall provide separate cooling to each of the E

1.

redundant train areas.

Interface requirements for ventilation and cooling are included in section 1

I 2.

1, 9.4.

4 Table 9. 3-1.

Makeup and Purification System Ferformance Data l

50 Normal letdown flow, gpm 200 Maximum letdown flow, gpm 10-15 Total seal flow to each RC pump, gpm 9-13 Seal inleakage to RC system per RC pump, gpm 138/150 Temperature to seals (normal / max), F Purification letdown fluid temperature 120/135 l

(nor=al/ max), F j

15-35 Makeup tank normal operating pressure, psig 1

800 3

Makeup tank water volume, f t i

1 Babcock s.Wilcox i

9,3 34

B-SAR-205 Amend. 16

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7 Chemical ~ Addition and Boron Recovery System

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Table 9.3-5.

i Component Data Boric Acid Mix Tank 1

Number of units Vertical, cylindrical t'

Type 240 3

Volume, fe Atmospheric Design pressure 150 Design temperature,'F SS Material VIII/no Code stamp ASE code / class D

i Quality group Non-Category I Seismic category i

8 i

Concentrated Boric Acid Storate Tank f

2 Number of units Horizontal, cylindrical

)

l8 2700 I

Type 3

Volume (nominal), f t Atmospheric Design pressure 150 Design temperature, F SS l

Material III/3 16 ASME code / class C

Quality group I

Seismic category

{

Regenerative Caustic Mix Tank i

1 i

Number of units Vertical, cylindrical 1

Type 240 3

Volume, fe Atmospheric Design pressure 150 Design temperature, F SS l

Material

'VIII/no Code stamp f

ASME code / class D

Quality group Non-Category I Seismic category Boric Acid Pump _

Number of units 2Centrifugal, horiz/ vert t

Type 50 Capacity, gpm 231

-r Head, ft i

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B-SAR-205 Amend. 16 Table 9.3-5.

(Cont'd) s 150 Design pressure, psig 200 Design te=perature, F SS Material III/3 16 AS E code / class C

Quality group I

Seismic category caustic Pump _

1Centrifugal, horizontal Nu=b e r Type 20 Capacity, gpm 231 Head, ft 150

)

Design pressure, psig 200 Design temperature, F SS-Material Manufacturer's standards ASME code / class D

Quality group Non-Category I l2 Seismic category Boric Acid Filter 2

Number of units Disposable element Type 100 Flow rate, gpm 150 Design pressure, psig 200 Design temperature, F SS Shell material 25 Micron size, u III/3 16 AS!T code / class C

Quality group I

Seismic category Evaporator Distillace Test Tank 1

2 Number of units Vertical, cylindrical Type 1400 3

Volu=e, ft Atmospheric Design pressure 150 F

Design temperature, SS Material VIII/no Code, stamp ASME code / class D

Quality group Non-Category I l2 Seismic category Distillate Storace Tanks _

1 Number of units Vertical, cylindrical Type 16.000 3

Voluse, fe Atmospheric Design pressure, psig 150 Design te=perature, F SS Material VIII/no Code stamp ASME code / class D

l2 Quality stoup Non-Category I Seismic category Babcock & Wilcox 9.3-40 w

B-SAR-205 Amend. 16 Figure 9.3-3, Sheet 3, will be revised to show 16 classification flags consistent vi:h the class-ification changes in Tables 3.2-4 and 9.3-5 in Amendment 16.

Babcock & Wilcox

.B-SAR-205

? Amend. 16 122.1 (Section 3.9.2, Chapters 4.5,9,10)

Provide a list'of'all ASME Class 2 and 3 components within'the B&'l scope of supply and the applicable frac-ture toughness requirements, specifications, testing procedures, and' I

acceptance standards.

Resoonse r

~ Table 3.2-4 lists the ASME Class 2 and 3 components in the 3-SAR-205. scope.

Fracture toughness test requirements imposed on ASME Class 2 components are stated in the response to NRC question 122.12. No fracture toughness require-ments are imposed on ASME Class 3 components.

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Amend, 16 Your response that no impact _ toughness requirements are imposed on

% 122.8 Class 2 components is unacceptable.

Provide information indicating the extent to which your equipments form to the following:

2 components are constructed shall be tested for fract h

ASME Code, paragraphs NC-2320 through NC-2360.

~ be ness exceeding 2 inches, the lowest service te=perature shall lower than RTNDT + 100 (rather than RT less a lower temperature is justified Sy methods similar to those con-taf aed in Appendix G.

(1) through (7) and others that can be Materials described in NC-2311b, shown to have adequate fracture toughness at. all servive temperatures say be exempted f rom these requirements.

Response

forth in this question exceed those of the ASME Code for The requirements set including approved Class 2 components and the published NRC requirArtnes, B&W considers the stated require-Regulatory Guides and Standard Review Plans.

f a lowest-ments to be unnecessarily restrictive, particularly the i= position o Accordingly, we do not agree, service temperature not lower than RTNDT + 100F.

to invoking these requirements on Class 2 components.

at this time, B&W is aware of and is participating in ASME Code Committee a, tivities direc c

if any, fracture toughness requirements should be invoked at determining what, We will, of course, conform to any requirements de-for Class 2 components.

veloped when they are included in the Code and are effective for equipment within the B-SAR-205 scope.

122.12, 3&W will impose certain As indicated in the response to NRC question 16 fracture toughness testing require =ents en pressure-retaining ferritic material in Class 2 components that are more than 2.5 inches thick.

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B-SAR-205 Amend. 16 122.12 Provide a list of all ASME Class 2 components within BSAR-205 scope g_

that have thicknesses exceeding 2.5 inches.

Idenrify the materials of.

construction and indicate the technical basis for not imposing fracture toughness requirements on those components.

Response

Because'B-205 components may be supplied by different vendors, and designs of the components may vary somewhat depending on the vendor selected,'it is not i

possible to provide a completely final listing of subcomponents and materials at this time. However, current and potential vendor designs have been reviewed to the extent available, and the only Class 2 ferritic pressure-retaining sub-components greater than 2.5 inches in chickness within the'B-SAR-205 scope of design responsibility are the following decay heat cooler components:

Thickness, Se rvice Component in.

Material temp, F Primary side 6.0625 SA515-70,40-305 channel flange et al.

Shell side flange 3.875 SA515-70,40-105 et al.

i Although materials other than SA-515 may be used, they have not been listed i

L since SA-515 represents the most limiting material with respect to fracture 16 toughness characteristics. The shell side flanga, while actually a part of the Class III shell, has been included in the listing because its structural integrity is required tb maintain the Class II boundary.

i B&W agrees to invoke fracture toughness testing on pressure-retaining ASME Class 2 components La che B-SAR-205 scope, or portions of such components that are fabricated of ferritic material, that are more than 2.5 inches thick.

in accordance with the methods of the ASME Code,Section III, Article NC-2300.

Acceptance requirements shall be those specified in this article; Summer 1977

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& WILCOX CO. WILL FORMALLY INCLUDE MODIFIED MATERIAL INTO THE 3-SAR-205 IN A!OT # 16.'...

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HELTDtES GRDIES If VOLLMER i

/

SKOVHOLT (LTR)

AT & I Vt BUNCH l

l l

S ALT 25'AN ft DEYOUNG (LTR) 1/l J. COLLINS I

I Ff;TnrPr

! I I/I KRFCER EXTERNAL DISTRIBUTION CONTROL NU.'.18ER i

M*

/

I/I NAT LAB:

(2)lf BRC0KHAVEN MAT LAB:

/

TIC:

REG. VIE ULRIKSON (ORNL) l

/

NSIC:

LA PDR ASLS:

CONSULTANTS 77 1370225

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ACRS : /G CYS S ENT ACFE GAT " AP "

t I Nnc reau ies casi

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