ML17275B032

Forwards Request for Addl FSAR Fire Protection Info.Requests Response by 810703 to Maintain Licensing Review Schedule

ML17275B032
Person / Time
Site:	Columbia
Issue date:	05/05/1981
From:	Tedesco R Office of Nuclear Reactor Regulation
To:	Ferguson R WASHINGTON PUBLIC POWER SUPPLY SYSTEM
References
NUDOCS 8105210250
Download: ML17275B032 (17)

Text

Docket No. 50-397 Washington Public Supply System ATTN:

Mr. R. L. Ferguson Managing,',Director 3000 George Washington Way

Richland, Washington 99352 MAY

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IBU et Fil NRC PDR Local PDR LBP2 File

Attorney, OELD DEisenhut RPurple RTedesco ASchwencer RAuluck MService IE (3) bccs:

NSIC TERA TIC ACRS (16) l',)AY 20 1981~

U,S, NUaSAE INEEAiO+

COhVAISS ION

SUBJECT:

WNP-2 FSAR - REQUEST FOR ADDITIONAL INFORMATION As a result of our review of your application for operating license, we find that we need additional information regarding the WNP-2 FSAR.

The specific information required is in the area of fire protection and is listed in the Enclosure.

To maintain our licensing review schedule for the WNP-2 FSAR, we will need responses to the enclosed request by July 3, 1981.

If you cannot meet this date, please inform us within seven days after receipt of this letter of the date you. plan to submit your responses so that we may review our schedule for any necessary changes.

Please contact Rag Auluck, Licensing Project Manager, ifyou desire any discussion or clarification of the enclosed report.

Sincerely, W g.'touwSQ(A Robert L. Tedesco, Assistant Director for Licenklng Division of Licensing Encl osur e:

Request for Additional Information cc w/enclosure:

See next page Sx 05sx 0gS 6 OFFICE/

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0 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 Docket No. 50-397 Washington Public Supply System ATTN:

Mr. R. L. Ferguson Managing Director 3000 George Washington Way

Richland, Washington 99352

SUBJECT:

WNP-2 FSAR - REQUEST FOR ADDITIONAL INFORMATION As a result of our review of your application for operating license, we find that we need additional information regarding the WNP-2 FSAR.

The specific information required is in the, area of fire protection and is listed in the Enclosure.

To maintain our licensing review schedule for the WNP-2 FSAR, we will need responses to the enclosed request by July 3, 1981.

If you cannot meet this date, please inform us within seven days after receipt of this letter of the date you plan to submit your responses so that we may review our schedule for any necessary changes.

Please contact Raj Auluck, Licensing Project Manager, if you desire any discussion or clarification of the enclosed report.

Sincerelj,

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t Robert,L. Tedesco, Assistant Director for Licensing Division of Licensing

Enclosure:

Request for Additional Information cc w/enclosure:

See next page

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Mr. R. L. Ferguson Managing Director Washington Public Power Supply P. 0.

Box 968 3000 George Washington Way Richland, Washington 99352 cc:

Richard g. guigley, Esq.

WPPSS P. 0.

Box 968

Richland, Washington 99352 Nicholas Lewis, Chairman 820 East Fifth Avenue Olympia, Washington 98504 MAY

~q 1gg1 Mr. 0.

K. Earle Licensing Engineer P. 0. 'Box 968

Richland, Washington 99352 Hr. Albert D. Tooth Resident Inspector/WPPSS-2 c/o U. S. Nuclear Regulatory Commission P. 0.

Box 69

Richland, Washington 99352 Nicholas Reynolds, Esq.

Debevoise 8 Liberman 1200 Seventeenth

Street, N.

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Washington, D.

C.

20036

ENCLOSURE

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En accordance with section 9.5.1, Sranch Technica1 Position ASB S.S-l, position C.4.a. (1} of NRC Standard Review Plan and section EEE.G of new Appendix R to 10 CFR Part 50, it is the staff's position that cabling for redundant safe shutdown systems should be separated by walls having a three-hour fire rating or equivalent protection (see section EIE.G.2 of Appendix R};

That is, cabling required for or associated with the primary method of shutdown, should be physica11y separa ed by the equivalent of a-three-hour rated fire barrier from cabling required for or associated with the redundant or alternate method of shutdown.

To assure that redundant shutdown cable systems and all other cable sys ems that are associated with the shutdown cable systems are separated from

~ each other so that both are not subject to damage from a single fire hazard, we require the following information for e'ach system needed to bring the plant to a safe shutdown'.

040.75 Prov~de a table that lists all equipment including instrumentation and vital support system equipment required to achieve and maintain hot and/or cold'hutdown.

For each equipment listed:

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Differentiate between equipment required to achieve and maintain hot shutdown and equipment required to achieve and maintain cold shutdown, b.

Define each equipment's location by fire area, c.

Define each equipment's re'dundant counterpart,

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2 d.

Identify each equipment's essen ial cabling (fnstrumentatfon, control, and 'power).

For each cab?e fdentffied: (1) thscrfbe the cable routing (by ffre area) from source to termfnatfon, and (2) Tdentify each fire area locatfon where the cables are separated by less than a wall havfng a three-hour fire rating from cables for any redundant shutdown system, and o

e.

List any problem areas identified by item l.d. (2) above that will be corrected in accordance with Section III.G.3 of Appendix R

(f.e., alternate cr dedicated shutdown capability).

040.76 Provide a table that lists Class lE and Non-Class 1E cables that are

-associated with th essential safe shutdown systems fderitffied in ftem 1

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-above.

For-each cable listed:

(* See note on Page 3).

a.

Define the cables'ssociation to the safe shutdown sys.em (coraen power source, commn raceway, separatfon less than IEEE Standard-3/4 guidel fnes, cables for equipment whose spurfous operatfon C

we'll adversely affect shutdown systems, etc.),

b.

Descrfbe each assocfated cable routing (by fire area) from source to terminagmn, and c.

Identify each location where the associated cables are separated by less than a wall having a three-hour ffre rating from cables requfred for or assocfated with any redundant shutdown system.

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040.77.

Provide one of the following for each oi the circuits identified in item Z.c above:

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(a),

The results of an analysis that demonstrates that failur caused by open, ground, or hot short of cables will not affect ft's associated shutdown system,

• Note *

(b)

Identify each cfrcuft requfring a solutfon fn accordance with section III.6.3 of Appendix R, or.

(c)

Identify each circuit meeting. or that will be modified to meet the requirements of section III.G.2 of Appdix R (i.e., three-hour wall, 20 feet of clear space with automatic fire suppression, or one-hour barrier with automatic fire suppression).

040.78 To assure compliance with GOC TS, we requfre the following inforrrztfon be provided for the contro1 room. If credit fs to be taken for an a1ternate or. dedicated shutdown. method for other fire areas (as identified by item T.e or 3.b above) fn accordance with section III.G'.3 of new Appendfx R

to 10 CFR Part 50, the following information will a1so be requfred for each of these pTant areas.

a.

A table that lists all equfpment fncTudfng fnstrumentatfon and vfta1 support system equipment that are required by the primary method of achieving and mafntafnfng hot and/or cold shutdown.

• NOTE Option 3a is considered to be one method of meeting the requirements of Section II.G.3 Appendix R. If option 3a is selected the information requested in items 2a and 2c above should be provided in general terms and the in or-mation requested by 2b need not be provided.

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A table that lists all equipment fhcludfng instrumentation and vital support system equipment that are required by the alternate, dedicated, or remote method of achfevfng and mafntafnfng hot and/or cold shutdown.

c.

Identify each alternate shutdown equipment listed fn item 4.b above with essential cables (instrumentatfon, control. and power) that 'are.

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~ located fn the fire area containfng the prfmary shutdown equfpment.

.""or each equipment lis: d provf"e one of the followfng:

(1)

Detailed electrical schematic drawings. that show the essential cables that are duplicated elsewhere and -are electrically isolated from the subject ffre areas, oi

'ihip (2)

The results of an analysis that demonstrates that failure (open, ground, or hot short) of each cable identified will not affect the capability to achieve and maintain hot or co1d shutdown.

d.

Provfde a table that lists C1ass 1E and Non-Class 1E cables that are associated wfth the a1ternate, dedicated,or remote method of shutdown.

For each item listed, fdentffy each associated cable located in the fire area containing the prfnary shutdown equfpment.

F'or each cable so id~ntified provide the results of an analysfs that demonstrates that faflure (open, ground, or hot short) of the assocfated cable xfll not adversely affect the alternate. dedicated.or remote method of shutdown.

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The residual heat removal system is generally a low pr ssure system that interfaces with.'the high pressure primary coolant system.

To preclude a

LOCA through this interface, we require compliance with the recommenda-tions of Branch Technical Position RSB 5-1.

Thus, this in.erface most likely consists of two redundan

.and independent motor opera.ed valves with diverse interlocks in accordance with Branch Technical position ICSB 3.

These two motor operated valves and their associated cable may be subje t to a single fire hazard.

It is our concern that this single fire could cause the two valves to open resulting in a fire-initiated LOCA through the subject high-Iow pressure system interface.

To assure that this interface and other high-low pressure interfaces are adequately protec.ed from the effects of a single fire, we require the following information:

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I a.

Edentify each high-low pressure interface that uses redundant elec rically controlled devices (such as

.two series mo or operated valves) to isolate or preclude rupture of any primary coolant boundary.

b.

Identify each device's essential cabling (power and control) and

~ describe the cable routing (by fire area) from source to termination.

c.

Identify each location where the identified cables are separated r

by.less than a walI having a three-hour fire rating from cables for the redundant devic.

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d.

For the areas identified in item 5;c above (if any), provide the bases and justification as to the'acceptabi1ity of the existing oesign or any proposed aedifications.

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