ML20037B581

Summary of 760729 & 30 Site Visit to Evaluate Fire Protection Programs

ML20037B581
Person / Time
Site:	Dresden
Issue date:	08/17/1976
From:	Knight J Office of Nuclear Reactor Regulation
To:	Butler W Office of Nuclear Reactor Regulation
References
NUDOCS 8010210868
Download: ML20037B581 (28)

Text

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AUG. I 71976 So -io se 59

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W. R. Butler, Chief, Plant Systems Branch, DDR

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THRO:

F. Rosa, Section Leader, Plant Systems Branch, D0R z.....g

=z TRIP REPORT - VISIT TO DRESDEN STATION FOR REVIEW Of FIRE PROTECTION SYSTEliS PURPOSE Guidelines and procedures for evaluating the fire protection programs in w

operating reactors are being developed jointly by DOR /0T and DSS /PS.

Certain operating plants are.being visited by a joint evaluation team

_ = =

to test these guidelines and procedures. On July 29 & 30, 1976 this E =-

team visited the Dresden fluclear Power Station.

~ = =6 The significant points of this visit are discussed below.

f'.".

REPORT 5

The staff discussed the purpose of the visit and the licensee described M

the plant layout and equipment location. The plant manager requested

'~

that any photographs taken be treated as proprietary information.

Follow-

~

ing these discussions, a plant tour of unit 1 was conducted with the NRC I

visitors divided into three smaller groups each led by a guide appointed by the plant manager. This was done at the plant manager's request to reduce the number of personnel in a given location at any time.

After tha unit 1 tour was completed, the licensee discussed on a point by point basis the items identified in the site visit agenda.

Enclosure s..:

1 is a copy of their discussion handout (this is informal information and not a formal submittal).

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=

The remainder of the day and the next morning was spent in touring the Unit 1 containmant and Units 2 & 3.

As a result of an " airborne" radio-activity condition in the Unit 1 containment it was decided only one PL group would tour this area while the other grcups would tour Units 2 & 3.

One group was given the instruction course on the use of face-masks and toured the Unit 1 containment.

Our efforts were directed to identifying fire hazards and determining the fire detection and protective features provided through out the

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plant. An attempt was made to identify specific areas whero redundant safety equipment might be vulnerable to a local fire. A number of camera shots for slide projection were taken throughout the tour.

Copies of plant drawings and procedures related to fire protection j;

were presented to flRC and are listed in Enclosure 2.

These documents will be kept on file in the Plant Systems Branch.

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"I AUG.171976 l;;s.'.21-l2=Ri=

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The significant observations made during this visit are presented in Ili3.i Personnel involved in the site visit are listed in Enclosure 4.

CONCLUSION E

Our observations at the Dresden 1 plant reveal that it will be very L==

difficult to reevaluate this and other facilities, designed prior to

=de 1955, on the basis of confonnance with the recocinendations of BTP

=

9.5-1 and Appendix A.

These recomendations assume certain con-figurations of equipment which nay not exist in plants of this

.:EJEs vintage.

Recomendations for the reevaluation of plants that do not have the 5."T configuration of systems and components assumed in BTP 9.5-1 should T-~~

be included in Appendix A.

~

RECOMMENDATIONS Certain recomendations designed to improve the reevaluation of fire i[" Ti 4

protection on operating reactors were made in TRIP REPORT - VISIT TO r'

YANKEE R0WE FOR REVIEW OF FIRE PROTECTION SYSTEMS Dated 08/03/76.

The following recomendations are made in addition:

=

==

1.

Fire Protection critMia for operating plants designed and con-tit structed prior to 1965 should be developed to provide a bssis

~"Mm for the evaluation of such plants. The recomendations now

===m contained in BTP 9.5-1 and Appendix A thereto will be of little E

use in evaluating these plants.

p= _

l 2.

The recormiendations of BTP 9.5-1 and Appendix A thereto define certain areas as battery room, cable spreading room, switchgear

.;.J room and control room. Existing plants rray not have areas that fit these definitions. Criteria for combinations of these areas should be developed.

as Distributions:

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Central Files Jar.s n.$t PSB Files JKnight Reading J. E. Knight

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JKnight Plant Systems Branch 1

l RFerguson Division of Operating Reactors Enc osures:

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1.

Commonwealth handout on Fire Protection S

2.

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C6anents on DresdNlibPronection i

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l July 27, 1976 Project No. 5156-00

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Cc==onwealth Edison Con any r-

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Dresden Station-Unitsf. 2&3 NRC Fire Inspection, July 29 & 30, 1976 Agenda for Site Visit I!! Safety Related Areas e

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Cable Spreading Area b..

Separation between redundant trays and conduits -

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- Separation was done in acecrdance 'with~ CE Design

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Specification 22A2501, Separation Require =ents for Reae. tor. Safety and Engineered Safeguard.Systens.

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- In~ general, separation'of PCIS and ISS cable '

trays was a mini =us of 3 feet in the hori: ental f.f 2.....

....:=.--

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directicn and 5 feet in the vertical direction.

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Barriers and fire st:ps ;rovided - In gene'ral, the., j..-

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h.:

- existing fire stops were fiberglass (GI RT'li..

Mew fire stops were ec=pleted recently fer the remaining

, _ openings. These fire steps were =ade, using in-

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'co=bustible. ceramic fire products and flace:retardan.

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cdritics (i.e., Flanc.astic, Vi=asco). ' The cable

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' - spreading area is enclosed by three hour fire walls.

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d.

Flame retardant coatings - No additional flame re-tardant has been added to the cables, the majority of which are jacketed with ?VC or ILPE. T/AC ducts are coated with an insulation that =eets or exceeds IkPACoderequirements.

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e.' - Fire detection equ".pment type and location - Fire

- detection is not provided, at present. Design for i

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cross-zoned ionization detection is under way.

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Fire extinguishing equip =ent type and location -At

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present, hose connections and portable fire ex-tinguishers are provided in the vicinity of the rf,.

cable screadins; area.. Design for an autc=atic Ei=~':s discharge Halen system with a manual carbon dioxide

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system and, water system backup is under way.

h.

Ventilation ducts and = cans of control an'E.' routing

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of control cable - Ventilation ducts do no:t have

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""*033 s. :".""4 fire da=;ers installed at the present. *:esign for

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isolation fire da=pers with air operators is under way.

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F.=ergency lighting - F.nergency lighting is provided. 8 j,,.,

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I n.

Protection afforded equipment where contact with water

...+.- - - -..

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=ay cause da= age - Curbs and canopies are not provided.,

p:.......

c :. --"""

A water s;2inkler fire protection syste= is not in r :. =.=....

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pW.=57:3 this area.

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.."....jg Means provided for detecting hydrogen or loss of.

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ventilation - Hydrogen detection is not 'provided.

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=.g Ventilation system low pressure se' a ventilation fan

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trip are alarmed in the Control Room.

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II:' Safety Related Areas.n f..... f >~- -/,- ^- '/

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2.

Switchgear Roc:s - no designated switchgear roca.

b. Separation between redundant trays and conduits -

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Same as III 1.b.

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c.

Barriers and fire stops provided - Same as III 1.c.

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Fire stops are not provided inte-nally to the switchgear.

d.

Flame retardant coatings - Sa=e as III 1.d.

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e.

Fire detection equiptent type and location - ~

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-Same as I,..,,

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g Fire e'x':inguis'ing equip =ent type and l'oc'a't'io'n -

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Hose stations and portable fire extinguish'ers are'

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pr'o'vided in the' vicinity.

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h.

Ventilati:n ducts and means of control and rou' tin's

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t of control cable - Fire-da=ers are not provided.

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F.mergency lighting - Imergency lighting is provided..

n.

?rotection afforded equip =ent where contact with.

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water'=ay cause dachse - Fcundations are provided under the'switchgear. Canopies are not provided

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over the equipment.

[ll Means provided for detecting hydrogen o'r loss 'of p.

ventilation - Hydrogen detection is not provided.

A vent fan trip for that area is alar:ed in the Control R:c=.

3.

Diesel - Generator Roots b.

Separation te: ween redundant trays and conduits -

Same as III 1.b.

c. ' Barriers and fire stops provided - St=e as' I!! 1.c.

d.

Flame retardant coating: - Same as III 1.d.

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Fire

.ection equipment type and location - Carbon dioxide pre-discharge and discharge alarm.

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f.

Fire extinguishing equipment type and location - A

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automatic discharge carbon dioxide fire protection

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system is provided. A water spray system is provided

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in the diesel oil day tank area.

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Venti,lation ducts and means of control and routing of p.s.;:j,J-

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control cable - Air operated fire dampers are provided in the ventilation ducts. The overhead door has a

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fuseable link on the louvers.

k.

E=ergency lighting - Emer5ency lighting is provided.

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n.

Protection afforded equipment where contact with water l..}

may cause da= age - Foundations are provided.

h.

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Means provided for detecting hydrogen er loss of t........

ventilation - Loss of vent fans are alarmed.

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4 Pri.ar'r Containment

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Separation between redundant trays and conduits -

c

,,;j.if Same as III 1.b.

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c.

Barriers and fire stops provided - All walls are 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />

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fire rated walls. Penetrations constitute the fire s: cps.

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d.

Flame retardant coatin5s - Same as III 1.d.

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Fire detection equipment type and location - No fire detection is provided. High drywell temperature is alarmed in the Control P.com.

f.

Fire extinguishing equipment type and location - The containment is nitro 5en inerted and therefore, no gllll$$.g protection is required.

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Ventilation ducts and means of control and routing cf e=:===

control cable - Fire da=pers are not provided.

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k.. Emergency. lighting - Emergency lighting is.;rovided.

n.

Protection: afforded equipment where contact with water e

may cause. damage' No specific water damage protection:

t is. afforded-the equi;:ent.-

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p.'.Means:p-ovided.for.deteeting: hydrogen.or loss of u ;

ventilation. High drywell.te=perature;: low ventilation:

pressure and 1 css of fans are' alar =ed in:the fontrol Room.

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[.[7 A CAM system.is being. designed.for the centain=ent.

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Seeendir rcentainmentc 3 ".,; e. '. -.

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b.-

Separation ~between redundant trays and conduits..

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Same as.III 1.b.

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c."

Barriers.and. fire s: cps provided - Sa=e as III:1.t.

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..y Secondary penetrations are also fire. stops.-.?enetrations

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lare;=ade;of__GE R's"I-124 silicon rubber covered with a flate

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. utardant. coating en the cuiside. New penetraticns are h[

=ade of inec=bustible cermic fiber products with silicon

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rubber, GE R"Y-c27.

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d.

Flame retardant coatings - When fla e retardant c: sting-

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.was,put on penetraticns, it was extended on 3 feet on

.:.: 7:r-either side of the penetration.

e.

Fire-detection equi; ment type.and location - ho. fire-

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detection is provided.

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Fire extinguishing equipment type and location --W*ec

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f...a ta..

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..-i n is provided in the designated

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.......-.4 areas shown on M-23 and M-375.

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. Venti.lat. ion. duct's and. means. cf control and.. rou. t..i.ng. o. f

-4 contro.l cable.

N.o fi.re. dampers are provided in the

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.ve.ntilatio.n.. system..

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.k.

. Emergency lighting-F.sergency lighting has. teen.provided.

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.P. rote.ct. ion.. afforded equipm.e.n.t where cont.a.ct wi.t.h.wa.r.e.

[..........,

[...........

,may cause, damage.- Foundatiens have been provided for i n-k

.th.e.equ. ipm.ent. t.o. raise it. above the floor.. el.eva. tion.

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p.

Mean.s..pr.o. vided for detect.ing hyd. roge. n cr.. loss of....

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. ventilation - High te=perature and loss of fan alar =s

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,have been, pro,vided.for loss of ventilation. _2:..

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. Battery Room...

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5. : :- 7 b.

Separation between redundant trays and ccnduita.-

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Same as.I.I.I.1.b.

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.c.

Barriers and fire stops provided. Same as III.1.c.

d.

Flame retardant coatings - No flame retardant.ccats.

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.ha.ve been.provided f.or cables.

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. Fire; detection. equi;:ent type and locatien

'o fire..,

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detection has been provided. Design for a cross-zoned.

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ionization detection system with alar =s in the Control

- j

=:di:E Room is under way.

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f.

Fire extinguishing equipment type and locu ien - Hose

=:=:= -

stations and portable fire extin6uishers are provides

- E:ii

.i.n. the area...

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h.

Ventilation ducts and means of control and routing of control cable - Fire dampers are not prozided f.or the r.7==.=

Battery Roon HVAC ducts.

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Protection afforded equipment where contact with i

h...... :.1 water =ay cause damage - No specific protection is

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provided for water damage. There is no water spray Y_

system provided. The battery packs are on stands.

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Means provided for detecting hydrogen or loss of

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ventilation - There is an alarm on the loss of vent.

= =.:

fans.

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Control Rocs (W ~~~:.1 b.

Separation between redundant trays and conduits -

[.f.g-- g f,.1,".ig Saes as III 1.b.

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.....nc=sy c.

Barriers and fire stops provided - Sase as ::: 1.c.

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d.

Flame retardant coatings - No fla=e retardant coatings

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'are provided.

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Fire detection equip =ent type and location - Icnization f

detection is provided in the exhaust ducts,with alarms in the Centrol Room.

f.

Fire extinguishing equipcent type and locatien -

r={ :.y Portable fire extinguishers and hose stations are

>.....' * Wl

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provided.

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Ventilation ducts and means of control and routing of 25 5);

control cable - Fuseable lirJ. fire dampers are provided

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l5 =:EF in the exhaust ducts.

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T.=ergency lighting - F.mergency lighting is provided.

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n.

Protecticn afforded equipment where contact with water

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may cause danage - No protection is provided for water

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damage.

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Means provided for detecting hydrogen or loss of pr ventilation - High temperature, low pressure and loss of vent vans 1s alar =ed in the Control Rocm. There

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is no hydrogen detection'.

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Safety Related' Pumo Areas'

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b.

Separation between redundant trays and conduits -

f4

,..r.r.'." :'

.._1Sa=elas*_III 1.b.

i c.

Barriers and fire stops' provided - Same as III:1 c.

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p; 3; d.

Flame retaidant coatings - No flame retardant coatings

"=Ti!Ei are provided. -

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7 5

e.

Fire. detection equipment type and location No-fire:

detection is provided.

{74.

f.

Fire extinguishing equip =ent type and locatien '-.Eose: -

J[..

connections and' portable fire extinguishers are

{2 provided for tiie protection.

h.

Ventilation ducts and.means: of control and routing of I

g..

"=

control' cable - Ventilation ducts do not have fire da=;ers.

rE k.

Energency lighting - Imrgency lighting is not specifically located in these areas.

n.

Protection afforded equip =ent where contact with water i

may'castse da: age - Foundations are provided for water protection. Canopies are not provided.

p.

Means.provided for detecting hydrogen or loss of ventilation - Loss of ventilation fans is alarmed in the Control Room.

9 Fire ?u o Area b.

Separation between redundant trays and ccnduits -

Same as III 1.b.

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c.

Barriers and fire stcps provided - No barriers or

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fire stops are provided in the screenhouse.

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Flame retardant coatings - No flame retardant coatings 3.;

are provided.

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e.

Fire detection equipment type and location - Fire detection is not provided.

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=2 f.

Fire extinguishing equipment type and location - Fire protection is not provided at present, however, a nii;;;;

water spray system is being designed.

C--

h.

Ventilation ducts and = cans of control and routing of,

control cable - Ventilation ducts do not have fire da=;ers.

k.

E=ergency lighting - Z:ergency lighting is not provided.

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' ~ " '

n.

Frotection afforded equipment where contact with wate t

may cause damage

• 4ater da age protection is not

=;...

provided other than foundations.

p.

Ioss of ven't fans alars in the Control Room.

iii.

IV.

Other Areas

=.-

1.

New and Spent Fuel Storage

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b.

Separation between redundant trays and conduits -

i+.i-m...=....;

Not applicable.

Barriers and fire stops provided - Not applicable.

i c.

[..:ii d.

Flame retardant coatings - Not applicable.

E

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e.

Fire datection equipment type and location - Not

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applicable.

E' f.

Fire extinguishing equipment type and location -

Not applicable, r.n=

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Ventilation ducts and means of control and routing of

.=..... :. \\

control cable - Not applicable.

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5c. Emergency lighting - f.=ergency lishting has been provided.

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n.

Protectien afforded equipment where contact with

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watei may cause damage - Water da= age protection. :t

r- :~2si

,r-has not been provided....,.

n......

rn=m e

...n..

p.

Means provided for detecting hydrogen or loss of

. 2.=

...d ventilation - Hydrogen detection has not bee.n.

.-.ngni; provided. Alar:n for loss of vent fans has been t;_

y;:.. _ _

provided.

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2.

Radwaste Treatment b.

Separation between reduadant trays and conduits -

r

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Net applicable.

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c.

Barriers and fire stops provided - Same,as III 1.c.

....y;;;

.... ?.5....,

d.

Flame retardant coatings - Flame retardant coatings tr;l,ll7

• .q; :

have not been provided.

rg-- _:.~:::

e.

Fire detection equipment type and location - No fire m-~

fire detection exists in the present facility. The

[2==;-

an-new radwaste facility will have four ioni:ation g,,

hi detectors, all alarming in the radwaste Centrol Room.

..CrE:

f.

Fire extinguishing equipme.nt type and location -

.,:j g.

Hose stations and portable fire extinguishere have been provided.

h.

Ventilation ducts and means of con. trol and routinC of

.=::

control cable - Fire dampe: s have not toen provided.

fjgj;.;!,;@l;

-=. =.

A. O. If/AC darrcrs hnve been provided for air t alancinE.

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?""..h. ""::

e

=.:

i: n n.~ x S

+

~

cm y

~g t

w ""

t p

...m 51

(.."=-

555 A.

p:r s

%.df:iG;rd),

w.

wlp:;. u

.A

' f...

f.h......~3 N.

N N

i

,-y-i=n.

s

\\

9.=. ?.5...%;

+

t g

g N eg =:W; ;.

4-e A -

2 '

w e

', N e L M - \\ E.=fif.E MS.

= ::.:.- ;

IF5f[

k.

Emergency ligh" ting - Emergency lighting has* been

^~

I k'.

g3 t-provided..-

".h5'-

g,

,s"

%222:&

n.

Protection. afforded equipment.where contact with

=;iC;,(

.=((J "."J water may cause. damage. Foundations. nave.been

^',

?.77.767:-~

. - :.c....=..n.w g

.s provided.

p.

Means.provided for. detecting-hydrogen or. loss.of 1""".".ECI ventilation..No hydrogen detection:has:been:provided.

j:.Ql i Loss-of vent fans.will alarm in the Control Roo:6.

6::.c..f

.n a=:

3.

Decontamination..

((

rr m; Personnel.

Eouiteent E

b.

Not-applicablec-Not; applicable. :-

[;E....

c.

Not applicable Not applicable

~~;;l-l}

j d.; None provided-None provided

[

. y.3.,.g e.

None.provided None p ovided'

h. ' -

f.

Not applicable'.

Portable extinguisher provided h.

Not. applicable Not applicable --

=922.T bE2:

2'""

k.

Nene.provided-None.provided n.

None provided None provided i

p.

No. hydrogen. detection

.No hydrogen dietection alarm en j.3

- -:.:.:==

alarm en loss of vent fans loss of vent fans

.;g.l 4

Water Storage Tanks 5

c.:.:. :.:.::...,

b.

Not applicable

[ :.==...

==

r.; ;;;

O ~.E-c*

r;-::..::.

d.

'=

9.==

~=

e.

rru f.

..:::.32

^

• == 5:

h*

==::=::.

t}.

E :- -

n n

3*

....,y

. {,. ~.,. ".....

s f_.,.,

..J.:.

'.'."J.-

g g &.

N;.

I

l

' %\\

g.

(

s w

r

~

\\

[

.h

\\

W:

s; i

p'l.'

t.'"A e

.}'

L.,

h...

.^. ::.

^N

(:-

- x "N

%~,'

\\

l r

x*

N.

e z:=

C

,s

. c=

i:.

.N

-12 =..

u.:.........

==:

~

c = =:q-...... -

r

=:=.=...=.:

~

t.g.

5.

Cdolinz Towers ; recline towtes ars got the sotir:e of Ei= ":E-i olant cooling water at Dresden15tation.

~

_/

6.

Cdmouter 3com

~~5"

~

qr

[E...

b.

Separation between redundan( : rays and condtiits -

'6

, ' ' N

.......=

\\

S Not' applicable.

1 N

..... ~ "..

^:

x c.

Barriers 'an'd ' fire ~.mups 'ppovided M same'as'III'I.c.

,s

-s'

. s x

e p-

~,'. ' '

d.

. Place' ' ret'ardant 'cos?,hs.s.- No flace retardant coatings C==

~

t s

t...

N',, '.

s.

gg s

are provided.

s.

N

,s.

e, -Jire danct.cn e.sespa-r.e type and location - No fire 7-ye

'- N

.e

~ - -,

u.,,

E _. =

prot 9P.icn-1$ p!yVided. \\.

E6 r

.X s

'N

,s f.

Fir *'e n insu b hi g equi;c.ent' type and locit' ion - Fire Ei

=

extingiiishir?, Ne~;rovif-d' in the area ~.

y s..

~

C, s

's

^ h." ventilation dh4.ani means of Ocatrol and ' routing of

25. ::)

s s

.. q...

ejntrol' cables' - Fuseable' link fire dacpers are provided

'in the 'eJPo'ist duc ts.

x.

w.

p.'...

- - m s

k.N E=ersanc'y lighting - 7.=ergency lighting is' 'not provided 3

sped fically"in this area.

I n.

Prote:: tion afforded it where contact with water Z-

. e -age ;rotection is'not provided.

may cause da= age p.

Means provided for detecting hydrogen or loss of ventilation -

No hydrogen protection provided. Loss of vent fans is

~

alarmed in the Control Roc =.

7.

Fecords Storage - Records are stored in the temporary

!=

Radiography Storage Building and "R cubed".

A new Record Storage Building is being designed.

b.

Separation tetween redundant tr3.ys and conduits - None.

c'. Barriers and fire s: cps provided -

L p:

ac i ':.

,y f.?

• E k..

2i:==

1....:.:'..

'-"^"::j._"

.hi

-

%:=

. :===

..a.d..:. ::

-iiiii=iiiii 13

[9r:.~E.1 r. =:s k%"i Cid IIds d.

Flame retardant coatings - No. flame retardant icoatings

• l

  ::: :-

are provided.

= = =.5

=

e._ Fire detection equipment type and location -

5Eh

.;;.=

f.

Fire. extinguishing equipment type-and. location:--Kalon

"=

is provided.as.a fire protection system for the temporary

...$.~.

Radiograph Building, No protection is provided'.in.

• K Cabed"..

c".L.*".:

7..

h.

Ventilation. ducts and means of control and routing of j.d"f~z

.:==

control cables.

2.ss k.

Emergency -lighting.- F=ergency lighting is not provided.

hr"

== =.T:

l.'. ~- :

n.

Protection afforded equipment where contact with water p -"-- l su===

may cause damage.- Xater da= age protection is not provided.

r..

..g

• t' p.

Means provided for detecting hydrogen or loss of Nent11ation -

Hydrogen or loss of ventilation alarms are not -provided.:

r.

8.

Maintenance Shoes -

"i2"~

b.

Separation between redundant trays and conduits' -

'. :6===

~""

Same as III 1.b.

.=_

c.

Barriers and fire stops provided - No fire barrier or r

.u [.j323

--- 7 q. ;

fire stops are provided.

-l;.1E.E5

. ::.::. Y.

E d.

Fla e retardant coatings - No flame retardant coatings

.;...ip.;-j.j,;

are provided.

c' e.

Fire detection equipment type and location -

1" 8 s". =

f.

Fire extinguishing equipment type and location - Hose

=

reels and portable fire extinguishers are provided in f.f.{.

the area.

h.

Ventilation ducts and means of control and rcuting of.

control tables.

-.. - h s

a=:+

.==

ee V

h.n..

3 p

[n-t J..i^.

3.25..

l

{

s g.'."**

g;,', ; *

. me.$

e

= " =.

i iiss d a

s-E.. u..w.

-15.

(==:=5 f:::

~??"?.

b:5.Y b

' r:= = =

~

- ut

? p":: *:?

k.

E=craency lighting - E=errency lighting has been

{;*,"~-

nrovided for the area....

'.'=..

Protection afforded equio=ent where contact with.

n.

= = =.

-.~....

e water =ay cause da= age

,'4ater damage protection,has

,;7;.,p.

not been,pr9vided.

=55.5E h,.

=.,=.

=::

s.

Means provided for detecting hydrogen or loss of

.-.=

= = = -

ventilation - Loss of vent fans is alar ed in the*

lil. :EE l jr; Control Roo=.

No hydrogen detection is provided.

ll;;;=..,3 u=

V.

Fire Extin;uishing Ecuitment u;

45

=:. =.]

1.

'4at er,3ys t e=s,

...gr Type and,1ccation

'iet pipe, deluge and =anual water

"""'.".3 a.

spray syste=s as shown en M-23 and M-375, and Sargent _

z=s. ::

n,,

I, undy Specification K-2263 Hose stations are also

~ ~""--.:

,, rovided,throughout the plant.

p

..===:

b.

Loc tion,- ?'.:=ps are located in the D1 and D2, 33

,.i.:j#

r. e screenhouses.

==

c.

Diesel drive.h fire pu=p backs up the nor=al service

s ;.

":

=

==.

vater supply for the 31, 02, 33 syste=s.

.:::e:.

d.

Capacity -

=:

Wi ii.=::

,. =.

D1 - 1000 gp= diesel p..,.

r-D2, 3 - 2000 gp= diesel E::....._

..7.-..

gij.

e. Source connections D2, D3, service water pu=ps

'.'.'((.

..... ~

=:==

D1

- screen wash pumps D1, D2, D3 - diesel fire pumps 55;;

f.

Source description -

)

D1 - Ocoling lake

=".:-

D2, 3 - Cooling :.ake

.y=

i5:..

idi :::7

^ '*hh i

._~..$.

~..~"'

--~- :== :. ~="::-

..==:.

I i

L f.:...

(,:.=,

==.

L =:.

3: n '..,.=,_n '.

g...

s=.:=::=

[i[b~

[5.. 5.."..!: :

g s

a

!" 5:

• :: 5 =.:=:j2 g.

Pressure - Fire loop pressure ncminally 100 psig.

[ [.

h.

Number of discharges -

["[.7,.,.1...

Spray heads -

f=g==g=..,

- g Stand pipes -

f."

"l a

.::=-:::::

Hose connections - With hoses approx. 150

.u:

Without hoses approx.171

- " " " ~,

~

1.

Parameters indicated and/or alarmed local'and C6ntrol Room Local centrol Room,

_.........[5.=."i r----r-Pump Rdnning X

f":""""

-~::::::

' - --- Pres sure " ' ' - -

I

.. Mechanical Trouble I

Loss of de p50er '

~

k.; E

[.

X t==:::=

'.[

Diesel day tank'1evel I

~

j. The routing 6f power supply cable for pu=ps, valves,

~

~ '

~

etc.. - The routiftg of power cable was far removed from fire hazards and any external hazards as far

" dii.

as practicable.

k. "..;..., k.....

2.

Carbon Dioxide Systems

!"55 a.

Type and Oescription - Cardox low pressure packaged unit

, )).:'~~

b.

Location - Column Row C 45 elevation 517'-6" in the gg Turbine Building.

c.

Redundancy - None id.;

d.

S'i:e -

..3'.I' D2, D3 - 7 1/2 tons

~

D1 4 tons

=.;..

iEhNiiE i :

r-x:::

!!!iin

.ii f5

==

t

+

=...

=s:

b...'..U.'

li. ~ +

"th*,

x=^

t :...:

gy:;,.;=

.6is-p::

ENCLOSURE 2 f.'_.

05:h-Y DOCUMENTS RECEIVED FROM COMMONWEALTH EDISON DURING

g JULY 29 & 30 VISIT TO DRESDEN 1, 2, & 3 h {l]

.;====

I.

Drawings y=.

=

P&ID Dresden 1 Installed Fire _ Suppression Systems.

(1 Dwg) ich1 1 set - Dresden _1 Ecjuipment Location Drawings.

(20Dwg's)

~

f.":~

?

P&ID's Dresden 2 &.3 Fire Protection Piping.

~ (2 Dwg's) -

1 set - Dresden 2 & 3 General Arrangement.

Q2Dwg's)

'{.{~~'

Nuclear Mutual Limited - General Plant Arrangement -

(1 Dwg)

EU5 Dresden 1, 2, & 3.

=.

=:..

!!!!??

~

II.

Procedures

. :l~

G.E. Separation Requirements used for the design of Dresden 2 & 3.

DAP 3 Emergency Drills.

I, 2 DAP 3 Emergency Telephone Num'ber.

==

DOA 010 Control Room Evacuation.36-508 - Fire Prevention Procedure For Welding & Cutting.

DAP 3 Station Fire Fighting.

]

Surveillance Procedures For Unit 1 Fire Protection systems.

L

~ ~ '._.

Surveillance Procedures-For Units 2 & 3 Fire Protection Systems.

l 1

u=..=

l l

I l

h5 D

Is=

7.. _...

ru:

)h,. 5 i.t =

ENCLOSURE 3 r.:' :r i ?

~

.~'2..

COMENTS ON DRESDEN

' =f=?

r "f.I::i]

I FIRE PROTECTION-(SITEMISIT47/29/76~ '7/30/76)-

{;,.]

. ~-

2*

, ]j,yj]

'. ;=ss'

=.m. =-

=

gE=6 General Coments i

I 1.

Cable-separation on gnit 1 doesnit. meet.present. criteria (impractical

!mgs=s si 3

to redesign to present, criteria). g..

E=~r 2.

Unit -1 has an emerge.nc.y:c.ondens.e.r.and.witb..a.m. inimum of equipment... -

E.55.

(1 pump & 1 valve) de.ca.y.h. eat..,r.emoval.is po.s.sible 3.

Unit 1 presently has.only.ogpdiesel. generator;(four more to be.

,;..fq:s

.- :r.::'

added) in===

rees 4.

Unit 1 has some areas where significant equipment is vulnerable to

.. = =

e...=y a fire in that location (cable tunnel & sphere penetration)

.. =~.[

z..-....

...i...

5.

Units 2 & 3 separati6n is pr6vid6d~not strictly by. Regulatory Guide' p,_

1.75 but relatively~ good.Huch of the divisional cable in widely

[1...

separated their criterti~ihyi 3 feet ~ horizontal 5 feet vertical.

==3

=a~

Where closer (not often) they'Ose'a~chble coating (Vimesco) 6.

Significant fire protection is'provided (fixed automatic &' manual n=

water. fixed auto & manuil(CO2)fpirticularly for fire hazards "i5 7.

Cablepenetrationsthbodhh alls, ire thr6 ugh'approximately six inch

~

.=

...n

...:..~..,..

pipes ind covered with Wmako~a cible c6ating similir to F1hmastic

.s=: -

. =

8.

Emergency lighting provided through battery operated seal beam units

=-

(fixednotportable) 5.-

9.

Self contained breathing appartus at various locations thoughout the

=...

}

plant

=

e s.a.*n

U

]

(=~

f" TigE

._."==~

.x.)

:.= +=

d5.

~^v m.

10. Comunications are by phone or hand radio set.

hihif

==rm

11. All automatic fire systems provide control room alarm when

))

1: k.v.==

actuated.

7"T M 55 5 12.-The Unit 2 & 3 cardox system has trouble indication in the control

~ ' ~

4:2=

Toom for low level, low pressure, and high pressure.

+:.i:{

i=eh

13. Ceitain fire protection system water valves are alarmed on shutoff

=M' ts... :i: 2 Comments on Specific Areas '

I.iEM

====;

Unit 1 l g; 1.

Diesel Generator Room

{'.lll((

1::h=EE=

a.

Automatic CO2 system

(.j;.+=s b.

Large area room'may ma'ke CO2 ineffective

~ 5

~

Day tank behind diesel next to wall no curb c.

d. ' Water hos'e sta' tion provided j

==..f

==:

e.

Floor drains available

? ::i

.T.:: =...

f.

Emergency condenser makeup pumps & jockey pumps located here

~"W; also their cables f.[il;

==.

2.

Battery Room

=a a.

No fire detection

. ed= t.

g:===-

b.

Floor drains available

" = = ^ -

.;;;

c. ' Enclosed rooin

~

M.);.f d.

Fire hose accessible outside

- ~~~i e.

No Hydrogen detection f

f.

Low differential pressure alarms in control room on loss of

.

ventilation system.

],il=

bh f :.

' ' '1:*.

=,

)

.=.O*,'..

n b---

(-

e c::.......

r=:m =:

:b Ti.

r=

Bi:=

Enciosure 3 j.:.:.. H

7. -

in.;' '-~ ;..

3.

Auxiliary Bay v= =g

.].......'_;

-~

t ::=

a.

Water hose stations available

,6=..

esic=2 b.

Transformers filled with Pyranol (non flamable oil)'

#g

• ~ ~

-:===i c'..

Switchgear~ for. diesels, punips & 'es'sentiial buses located here 4.

Transformers outside buildings ( 11 3 units)

. u::

=.ER$

a.

Oil filled (flarmiable)..-

bb Automatic dry water system for fire protection for each trasforeer

[he~d

~

5.

4 KV-Bus Switchgear room hl 7 =1 a.

No-fire detection '-

" "l Nbh b.

Hand CO2 extinguishe'rs provided

=

c.

No water F

6.

Auxiliary control room l

h a.

5everal'CO2 h'and extinguis'he'r's' provided 5:

b.

No smoke detectors in e'nclosed panels

.= =::s2:l l=... :.5 c.

Plastic ceiling tile EFE d.

Water hoses accessible outside room

==

Ep.;

7.

Cable Tunnel EE

. = = =

a.

No fire detection Y-

. l::.".'*:

... :!E:::..

b.

No deliberate separation ~

"~~~

=.:

c.

Cables go to sphere at end of tunnel IE5=

d.

No Water hose station or fixed sprays (they intend to install

=c==j 53 sprinklersystem) m#5 e.

Appears to be a vulnerable for loss of redundant equipment f!:y=j}.

f.

Vimesco applied to penetrations p;f~

t.

fN[

g

. =

~

..2:":::~

t a:z 2 y;E 0: *:

$b:k. ====

==:.

8.

Inside Containment Sphere s=

a.

Equipment widely spaced

,.~.Z. T b.

Vulnerable at cable penetration area

====

~~

E= ::5:?:

No fire hazard except cables c.

==

d.

No fire detection

~~

LE:5.&&

E=i=

?k

[

e..No fire extinguishing equipment

. ]h....:

9.

Auxiliary Bay 3 g.....;

.2 a.

Service air compressors located here

~""..,[.,'.

t.---

=:e b.

Instrument air compressors located here

. =::

.:g;. :-

c.

Fixed CO hose 2

I Not supposed to be a safety related area

=

d.

==:

10.

Primary Feedwater Pump Area a.

Automatic CO2 extinguishing system (heat detector)

"7.:.; ;

b.

Curbs provided to contain tube oil leakage l

c.

Water hose station accessable c=ri h =:

d.

Could not find floor drains ii 1

e.

Additional CO2 available nearby 11.

C_ ore Spray Pump Rooms Three pumps (added since plant was built) a.

b.

No fire detection

T::

l c.

Water hose station accessible outside door d.

Hand held CO2 extinguisher available in room

~~~: ::.

l e.

No floor drains

=

l f.

No' fire hazards except cables ies g.

Cables for two of the redundant pumps run in same cable tray.

l

a'

(. _.

62.

5

---

I

.:.2 :i

^

_. : :g:--

- -9

?.== ::

12. Diesel Fuel Tank

[==::

= =q a.

Fire walls provided to contain oil' spills

'[ii=iiid E..

b.

Remote from plant buildings E' '5!5::.

5 c.

Fire hose stations available

~9

13. Diesel Fuel Pump Room 2~l a.

Small building near. fuel tank b.

Water hose stations outside

[;.,...lq

--- - 1 c.

Hand extinguishers outside

~

E....:

14. Auxiliary Boiler

!? 4::EE a.

Concrete wall between this building and the turbine building F-

%= T (no doors between the two)

==

l b.

Not safety related

==

15. Water Intake Structure a.

Diesel fire pump located here (fuel tank outside)

==

==?

b.

No fire detection E......

c.

Water hose station accessible outside

" Tis d.

Hand held CO extinguishers available 2

e.

One self contained breathing apparatus here

.ji'

=;-

16. Hydrogen Storage a.

Outside away from buildings

[.{i b.

Hose stations accessible E=

=

c=

.== :.;::.

J(=

y e

="

7 :.3

=.7 i=N '

Gjjk==

E==Ej Units 2 & 3 l.

Battery Room 2 (all division II Shared between 2 & 3)

'.7 d

', 6:=sd a.

Only division 2 cable-trays here

.i

{":..

b.

No fire detection (they.are planning to install fire detection)

=

c..

. Hand extinguishers

]}

d.

Condensate demineralizer water available (not a fire hose p.;;j:h

!@==

station) r...

2.

Switchgear Cable Spreading Room Combined

)

=..=

4 a.

. Emergency Lighting Provided h"Eb!

= =<

b.

Cables all overhead in trays IF.55)

GG.?

c.

No water hose stations available

=

d.,

They are planning an automatic Halon system with backup fire I

. hoses (automatic ventilation duct closure is also planned)

==-

e Hand extinguishers available in room p :...=

l fi;9E?d

(

f.

In the few locaticas where cable separation is less that the

[,:. ::+.e!

l

==

distance specified in their criteria flame retardent cable

1. si coating is applied to the cables (Vimasco) i=5j g.

The room is located below Control Room and above the cable tunrel

...: :..~~~

~

3.

Computer Room..

5.:

Next to (Switchgear Cable Spreading Room)

)..J.'.~.

l a.

b.

Completely enclosed

. [.;;;(

c.

Some cables under the floor concealed space d.

No fire detectors

.===

e.

No automatic fire protection.

" ~~~

l f.

Some cable trays pass here (Vimasco covers cables at room E

.

a==

0~~.*.

l

, e;,,

03 :.

[f"'..

'553fd i

sD=

=-

y2=5

.===

t:

h"E" F". :;.==

m.

I S E ;.

.,. = =

g penetrations)

=~=~

1: san

'g.~ Poom air tight Not always manned

. ~~"~~

h.

• = =

i. No safety related cables?

l=..i.

h

...=

Hand held CO2 extinguishers available fe[i[

[

k.

Floor tile looks combustible r-4.

Turbine Building b=

==

a.

CO2 is available to pu,rge hydrogen from generator

=r =.:s

.. 3==

b.

Automatic water sprays provided

= =..

=..

T;;;--.E c.

Drains available I. D..-

x:: :1 d.

Hydrogen separated from seal oil here e.

No curb on oil tank

~

~iCOl f.

Oil could flow downstairs

...::.~

5.

Diesel Generator 2 Room

~

N J:; ='"rg a.

Automatic CO2 provided

"==-

'5=:-

b.

Enclosed Room

". = " ' ~s:

c.

Water hose station outside door

......r,- :

d.

Drain in room goes to oil separator tank h]-

e.

Heat detectors provided

~

~~

6.

Dfi~sel Oil Day Tank a.

Completely enclosed in a concrete room (and fire door)

"X

+=..

b.

Oil spills would be contained by the pit design NE -

r..__

c.

Fixed water sprays with fusible links q;

d.

Fixed CO2 also provided

=

e.

Explosion proof light fixtures

~ 'r; e

l kkh E

0.::i 5

7. :.:..:.::-

. ~5.5.1 hk#5

!!E!EE{

7.

Cable Tunnel

$.=...

7 a.

Carries cables from spreading room to reactor building

!=-

. : m.:

b.

Both divisions of units 2 & 3 pass thru here f ' =7.7 _

....... =..

c.

Short distance near,the (tunnel end) penetration, all division

t 1 cables are on one side of the tunnel and division II cables

$=E=E h.

. are on the other si.de.

55 ?

7...

d.

Fusible element wate'r sprays,on each side of the entire length b;..jf g=..g of tunnel e.

No smoke or heat detectors N

~

= Ens:

Cable tray loading relatively 1.ight

.2..f f.

E=.+:

8.

Turbine Building Elev. 521 ft 57 Electro Hydraulic C,ontro1 Units here (EHC) a.

b.

Oil in EHC units fire resistant hydraulic oil (Fyrquil)

~

.c.

Cardox system for units 2 & 3 located here

]

d.,.Two 150 ft ansul cart units available

..,g.:=-

=me

.e.

Water hose stations available E=-

=

9.

Turbine Oil Room p;.

=

a.

Has two tanks of turbine lube oil (new and used) i...

i.?!:'=#4 b.

Large curbs provided

'=".g c.

Floor drains provided f'M d.

Water sprinkler system fusible element actuated

. e.

No fire detectors M

2-:.

="

f.

Fire door provided g.

Fixed CO2 hose provided

,ii,

r.....

h::.

tr

^.*U.

'"*:=":

=:..

'I o,...

LEE.m::-

..:t.

yg:.

p Td[I j.........

2=== _.....,

55555i

10. Turbine Oil Tanks

.....=

===-

a.

Has sprinkler system fusible link actuated ss;;;q

..........i b.

Large curbs for containing spills

11. Turbine floor _

F.

,: - :.== -

a.

Recirculation pump MG sets here have fluid couplings (oil)

Es=..ms e

4 b.

Sprinkler system actuated by fusible elements

[=g.].j N.$

c.

Water hose stations available lie!=Y d.

Fixed CO2 hose available ll.~ll."l e.

Hand extinguishers available

==.=u; 22.! "

12. Reactor Building

.....g a.

Water hose stations provided 7..

b.

Hand CO2 units

(....

c.

No fire detection

[t,1=s iE'E d.

Curbs provided for water Es;M e.

Control rod accumulators and solenoid valves located here

=5 f.

Cable has good separation and low concentration gg;.

Sis:

g.

4KV switchgear is protected from water damage by cover which

p.....

drains outside a curb.

[.il="',

5.....

13. Refueling Floor h.5 a.

Fuel under water

=w b.

Little to burn c.

Water hose stations provided EEE.?

d.

Hand CO2 extinguishers provide,d

.:= :.=.._

C::

L ' 'n/.h:

.';=

55 s

./

• ' =

.s....,

===

h..5..

h b

p

1. =

10 -

p E$ ::=;;

14. The 2/3 Shared Diesel

/iEi-a.

Same protection as Unit 2 Diesel

g; b.

The unit 2 & 3 diesel fuel oil storage is underground

m

15. Off Gas

.e e se s 4 9

a.

Fire hose stations available external to building b.

Emergency lightin,g provided

..';.5..

c.

Hand extinguishers provided fhlN5 5.ij d.

Not safety related

g:;.;

e.

Away from reator buildings f.

No fire detection i

s Ei: :::q;;..

h-::.

L&'s

- :.::.:::=-.

e e

6

=f El f:

m...--

--a..,

h

(.._s*

(h".

s

!iiis;s ENCLOSURE 4

=;-;=-

=.y d[.,. [

Dresden Visit'7/29/76 & 7/30/76 5:.E,..=?

-*n :4=;

i de=5 R.lerguson USNRC E===="E

'1 E-Eis:

USNRC

.E~

D. P. Notley i

i

..s==

5:53)

C. A. Heit ~ ; ; -. '

.: " USNRC

-- I'

~;

j

.4 mq

. H. ~J._ George USNRC

=>;

.=

(:===: ::

F. P. Lucland

1:'

'I

'C'; '

' ' ~ ' CE' 'Co.-

. p.p...

B.: A. Temple

-.: : ':- ~i:

CE Co. - DNPS i [E G1 B.:B. Stephenson~ : r: : ':i:

CEC - SNED

;=.

-q i... ::d V:..::.;.Q R.- T. Steen '::. 'i ::1:

CEC - SNED

""1

==-- ;{

R.:C. Pike

'~U USNRC

. E }$

I ""=I J.'E. Knight.

CEC - SNED H. K. Stolt NRC - Glen Elvin T. C. Harpster CECO - DNPS 45:

E. Budzichowski CECO - DNPS F

ts L. W. Duchels CECO Dresden

==

J. S. Abel CECO Dresden

=

F=i$

B. B. Stephenson Sargent & Landy

......;Mi ei T. J. Victorone Gene Embr6

-is Gil Cano E

=t

.u

.al Tagi

=3

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e..

fbbfh.*

I

=

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!.7.

t t...

e m

.ev

';*=: