ML18037A035

Forwards Responses to SER Open Items 91 & 97.W/three Proprietary Oversize Drawings.Aperture Cards Available in Central Files

ML18037A035
Person / Time
Site:	Nine Mile Point
Issue date:	09/13/1984
From:	Mangan C NIAGARA MOHAWK POWER CORP.
To:	Schwencer A Office of Nuclear Reactor Regulation
Shared Package
ML17054B008	List: ML18037A035
References
(NMP2L-0159), (NMP2L-159), NUDOCS 8409180359
Download: ML18037A035 (36)

Text

j REGULATOR- INFORMATION DISTRIBUTION STEM (RIDS)

ACCESSION NBR:80091SO359 DOC.DATE: Gu/09/13 NOTARIZED; YES DOCKET ¹ FACIL!50 410 Nine Mile Point Nuclear Station~ Unit 2g Niagara Moha 05000010 AUTH ~ NAME- AUTHOR AFFILIATION MANGANgC ~ VS Niagara Mohawk, Power Corp.

RECIP NAME. RECIPIENT AFFILIATION

',. SCHNENCERgA ~ Licensing .Branch 2

SUBJECT:

Forwards responses to SER Open Items 91 8 97 AN/three drawings+Aperture cards available in Central- Files. 'versize DISTRIBUTION CODE: 8001D COPIES RECEIYEO:LTR g ENCL ~ SIZEe g TITLE: Licensing Submittal: PSAR/FSAR Amdts NOTES:PNL 1cy FSAR'S L AMDTS ONLY'5000410 L Related Correspondence RECIPIENT RECIPIENT COPIES IO LTTR EN ID CODE/NAME LTTR ENCL CODE/NAME'RR/DL/ADL NRR LB2'C 1 0 NRR LB2 LA HAUGHEYgM 01 INTERNAL: ADM/LFMB 1 ELD/HDS3 1 IE F ILE 1 IE/DEPER/EPB 36 3 IE/DEPER/IRB 35 1 IE/DQAS IP/QAB21 1 NRR/DE/AEAB 1 NRR/OE/CEB 11 1 NRR/OE/EHEB 1' NRR/DE/EQB 13 2 NRR/OE/GB 28 NRR/DE/MEB 18 1 NRR/DE/MTEB 17 1 NRR/DE/SAB 24 1 NRR/DE/SGEB 25 1, NRR/DHFS/HFEBQO 1 NRR/DHFS/LQB 32 NRR/DHFS/PSRB'-

NOTES'OPIES 1 1 NRR/DL/SSPB 1 NRR/DS I/AEB 26 1 NRR/DSI/ASB 1 NRR/OS I/CP8 10 1 NRR/DS I/CSB 09 1 NRR/DSI/ICSB 16 1 NRR/OS I/METB 1?. 1 NRR/DSI/PSB 19 1 1 NRR/DSI/RSB 23 1 REG- FILE 1 RGNl 3 1>>

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Backf it: YES NO Others:

Data Entry Expedite: YES Others:

DDC Change availability to PDR: YES NO Other:

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Film for tub Others: ease Film Doc Behind Prop Sheet M rop c e n y.

If there are any questions, contact Joyce

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NIAGARA MOHAWK POWER CORPORATION/300 ERIE BOULEVARD WEST, SYRACUSE, N.Y. 13202/TELEPHONE (315) 474-1511 September 13, 1984 (NMP2L 0159)

Mr. A. Schwencer, Chief Licensing Branch No. 2 U.S. Nuclear Regulatory Comission Washington, DC 20555 Re: Nine Mile Point Unit 2 Docket No. 50-410

Dear Mr. Schwencer:

Enclosed for your use and information are the Nine Mile Point Unit 2 responses to the Nuclear Regulatory Commission's Safety Evaluation Report open items. This information has been previously discussed with your staff and is submitted to aid your review of the Unit 2 license application for the resolution of these open items. This information includes Safety Evaluation Report open items 91, 97.

Very truly yours, C. V. Mangan Vice President Nuclear Engineering 8 Licensing NLR:ja Enclosure xc: Project File (2) 84aeiao~ ~ O> 4aO9O<~O pgp poOCK pOg

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UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION In the Matter of Niagara Mohawk Power Corporation ) Docket No. 50-410 (Nine Mile Point Unit 2)

AFFIDAVIT C.V. Mangan, being duly sworn, states that he "is Vice President of Niagara Mohawk Power Corporation; that he is authorized on the part of said Corporation to sign and file with the Nuclear Regulatory Commission the documents attached hereto; and that, all such documents are true and correct to the best. of his knowledge, information and belief.

Subscribed and sworn to before me, a Notary Public in and the the State of Maryland and County of Montgomery, this 13 day of September 1984.

Not y Public in and; for,,

Montgomery County, Maryl'and My Commission expires:

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0 Nin'e Mile Point Unit

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2 FSAR EEKQ $ 7>ri 9A.3.6.2 ' Sectional Control Valves 1. 10 Approved post indicator sectional control valves. are 1.11 provided to isolate portions of the fire main loop'or 1.12 maintenance or repair purposes.

9A.3.6.2.3 Hydrant Isolation Valves 1.14 Curb box valves are provided to isolate each hydrant from 1.15 the fire main for maintenance purposes.

9A.3.6.2.4 Fire Main System Piping 1.24 The fire main system piping is separate from service water 1.25 and sanitary water system piping.

9A.3.6.2.5 Multiunit Nuclear Power Plant Sites 1.28 Nine Mile Point Units 1 and 2 are located adjacent to each 1.29 other. Each unit has an independent fire main loop with its 1.31 own water supply and are interconnected.

9A.3.6.2.6 Fire Pumps 1.33 Unit 2 has two fire pumps, one electric motor drive and one 1.34 diesel engine drive, each rated at 2,500 gpm at 125 psig and 1.36 each capable of meeting maximum fire demand flow. The two 1.37 pumps are headered together and connected to the yard fire main loop in four places. Two connections are adjacent to 1.38 each other, the third runs through the turbine building, and 1.39 the fourth runs through the control building and connects to the yard loop at points remote form the first two 1.40 connections. The pumps are located in separate rooms with 1.41 3-hr ratings.

The fire pump installation confirms to NFPA 20, Standard for 1. 42 the Installation of Centrifugal Fire Pumps, except that the 1.43 electric motor driven pump uses a non-UL listed 4.16-kV 1.44 circuit breaker modified to meet the intent of NFPA Standard 20 instead of a UL-listed controller. Because 1.46 there, are no UL listed fire pump controllers (rated in excess of 600V) UL will perform a field investigation of the l. 47 Unit 2 controller and provide a report of compliance to 1.48 NPPA 20-1983.

Recommendations submitted by UL to upgrade non-compliance l. 49 items will be incorporated into the current design. 1.50 Amendment 9A.3-50 ch1217718f-14dp 09/06/84 155

V

~ Nine Nile Point Unit ~

2 FSAR 9A.3.6.2.7 Outside Hose Installation Unit 2 complies with the intent of this SRP guideline. The average distance between hydrants is less than 250 ft, and between hose houses less than 1,000 ft. Hydrants and hose coupling threads are compatible or adapters are provided for local fire departments. In addition, each hose house will be ec{uipped with 1 1.2 in and 2 1/2 in fire hose, nozzles, Amendment 9A.3-50a ch1217718f-14dp 09/06/84 155

' ~

Nine Nile Point Unit 2 FSAR THIS PAGE INTENTIONALLY BLANK 2.4 Amendment 9A.3-50b ch1217718f-14dp 09/06/84 155

0Nine Mile Point Unit ~

2 FSAR 9A.3.6.2.2 Sectional Control Valves 1. 10 Approved post indicator sectional control valves are 1.11 provided to isolate portions of the fire main loop for 1.12 maintenance or repair purposes.

9A.3.6.2.3 Hydrant Isolation Valves 1.14 Curb box valves are provided to isolate each hydrant from 1.15 the fire main for maintenance purposes.

9A.3.6.2.4 Fire Main System Piping 1.24 The fire main system piping is separate from service water 1.25 and sanitary water system piping.

9A.3.6.2.5 Multiunit Nuclear Power Plant Sites 1.28 Nine Mile Point Units 1 and 2 are located adjacent to each 1.29 other. Each unit has an independent fire main loop with its 1.31 own water supply and are interconnected.

9A.3.6.2.6 Fire Pump 1.33 Unit 2 has two fire pumps, one electric motor drive and one 1.34 diesel engine drive, each rated at 2,500 gpm at 125 psig and 1.36 each capable of meeting maximum fire demand flow. The two 1.37 pumps are headered together and connected to the yard fire main loop in four places. Two connections are adjacent to 1.38 each other, the third runs through the turbine building, and 1.39 the fourth runs through the control building and connects to the yard loop at points remote form the , first two 1.40 connections. The pumps are located in separate rooms with 1.41 3-hr ratings.

The fire pump installation confirms to NFPA 20, Standard for 1. 42 the Installation of Centrifugal Fire Pumps, except that the 1. 43 electric motor driven pump uses a non-UL listed 4.16-kV 1. 44 circuit breaker modified to meet the intent of NFPA Standard 20 instead of a UL-listed controller. Because 1.46 there are no UI listed fire pump controllers (rated in excess of 600V) UL will perform a field investigation of the 1.47 Unit 2 controller and provide a report of compliance to 1.48 NPPA 20-1983.

Recommendations submitted by UL to upgrade non-compliance 1.49 items will be incorporated into the current design. 1.50 Amendment, 9A.3-50 ch1217718f-14dp 09/06/84 155

Nine Mile Point Unit 2 FSAR 9A.3.6.2.7 Outside Hose Installation 1.52 Unit 2 complies with the intent of this SRP guideline. The 1.54 average distance between hydrants is less than 250 ft, and between hose houses less than 1,000 ft. Hydrants and hose 1.57 coupling threads are compatible or adapters are provided for local fire departments. In addition, each hose house will 1.58 be equipped with 1 1.2 in and 2 1/2 in fire hose, nozzles, Amendment 'A.3-50a ch1217718f-14dp 09/06/84 155

INine Mile Point Unit 2 FSAR t

THIS PACE INTENTIONALLY BLANK 2.4 Amendment 9A.3-50b ch12 1 77 18 f- 14dp 09/06/84 155

Certification of Fire Rated Doors The fire-rated doors and frames for installation at Nine Mile Point Nuclear Station Unit 2 will not be UL-labelled. Although these doors vill not be qualified by actual fire testing, engineering calculations, technical evaluation, and comparison to labelled doors varifies their accept-ability as fire barriers subjected to a Class A (3'r.) fire rating.

The results of these calculations, evaluations, and comparisons are summarized below:

1) These doors and frames are manufactured in accordance with the Quality Assurance requirements similar tn that of any nuc'ear safety related component, thereby assuring the quality, trace-ability, and.'performance characteristics of the materials used.

2) These are heavy duty hollow metal blast/tornado doors, consisting of 3/16" thick face sheets securely welded to 3/16" thick stiffeners (14 x 9/16 x 3/16 bar channel). The inside of the door is filled with superior quality fiberglass insultation.

The oveiall door thickness is l-7/8".

3) These doors are equipped with extra heavy duty hinges welded to the door and bolted to the frames. The bolt holes in the hinge blades are oversized to allow thermal expansion of the door with its frame.

4) These doors are equipped with a heavy duty three point latching system. The bolt throw is at least 3/4" and strike/bolt clear-ance is provided for thermal growth of the door within its frame.

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5) The door frame is constructed of 5x9" channel. Xt is sized to provide adequate clearance gaps for horizontal thermal expansion and designed to "grow" in the vertical direction. Because the frame will not restrict thermal expansion of the door (up to 2000'F), the door will not buckle or deform as might otherwise happen.

6) Calculations indicate that perpendicular deflection of the door as a result of differential growth of the "hot-side" and "cold-side" fa'ce plates should not exceed 50 percent of the overall door thickness (at 2000'F, hot-side) and consequently flame propagation is prevented.

0 CULATION OP TEE EXPANSIO THE WATERTIGHT DOORS PROJECT: NINE MILE STATION - UNIT g2 DOOR NUMBERS: SA 175-3) SA 175-4) NA 175-2) R 175-4) R 175-5 6 R 175" 7 Dere. oF dirt' 7 r hp

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The method of calculating'expansion is based on the size of the door times the temperature rise (2000 F - 70') or 1930 times the coefficient c of steel expansion (0.0000065)

Width of door 5/8" - Total clearance I

l-l/8"

'Minimum clearance 3/8" (0. 375" )

Expansion in, width 34. 625 x 1930 x 0.0000065 0. 434 0. 217" NOTE: 0.217 "is less than 0.375" Height of door 85" - Total clearance l-3/8" Minimum clearance 5/8" (0. 625")

Exp ans ion in height 85" x 1 930 x 0, 00000 65 1. 0 66" 0. 5 33" NOTE: 0. 533" ls less than 0.. 623"

0 COMPARISON BETWEEN 3 PSI TORNADO DOOR

{TYPE XXI g Vp & VX) AND AN EXISTING U . L. LABELED 3 HOUR FXRE DOOR.

The purpose of the following analysis is to compare the Type IXI, Type V, and Type VX, 3 PSX Tornado Doors with an Existing Fire Labeled Door which was tested in accordance with the Standard for Safety, Fire Test of Door Assemblies UL 10B for 3 hour fire rating.

CLEARANCE FOR THERMAL EXPANSION The combined clearance between the door and the associated frame in the area of the labyrinth formed by the. 1" x 5/8" bar stop (see figure 1) for door expansion during a fi:re, is given in the table below, along with the overall door dimensions.

OVERALL DOOR ~ ~ ~ ~

Door DESCRIPTION DIMENSIONS TOTAL DOOR/FRAME GAP HORXZONTAL VERTICAL DXAG.

Type XXI Tornado, 35-3/4"x83>" .50 1.13 1.24 Single Leaf Type V Utility, 35-3/8"x59-7/16" .50 1.13 1.24 Single Leaf Type VX Tornado, 71~a"x83>" .88 1.13 1.24 Double Leaf The following calculations verify that there would be no appreciable interference {contact force) between the door and frame during a fire where the temperature of the door reached 1930'F.

HORIZONTAL EXPANSION (T e IIX & V) 35.75-in x 1930'F x 6.33 x 10 'F = .44-in HORIZONTAL EXPANSION {T e VI) 71.5-in x 1930'F x 6.33 x 10 'F = .87--in VERTICAL EXPANSION (Type XII & VI) 83.25-in x 1930'F x 6.33 x 10 'F = 1.02-in VERTICAL EXPAiVSION (T e V) 59.44-in x 1930'F x 6 33 x 10 'F = 73-in DIAGONAL EXPANSION (T e IIX, V, & VI)

90. 6-i n x 1930'F x 6. 33 x 10 'F = 1. 11-in.

.The door and frame descriptions outlined in the following Comparison Chart show that the door is secured against unacceptable warpage by. a two or three point latching system and two extra heavy duty hinges. The door and frame are also shown to be much stronger than the existing fire rated door.

THE PRKSRAY CORPORATION / SVBSIOIAAY OF PAWI.ING RV BOCA CORPORATION

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NIAGARA thOHAWK POWER CORPORATION/300 ERIE BOULEVARD WEST. SYRACUSE. N,Y. 13202/TELEPHONE (315) 474-1511 September l3, 1984 (NMP2L 0159)

Mr . A. Schwencer, Chief Licensing Branch No. 2 U.S. Nuclear Regulatory Commission Washington, DC 20555 Re: Nine Mile Point Unit 2 Docket No. 50-410

Dear Mr. Schwencer:

Enclosed for your use and information are the Nine Mile Point Unit 2 responses to the Nuclear Regulatory Commission's Safety Evaluation Report open items. This information has been previously discussed with your staff and is submitted to aid your review of the Unit 2 license applicati'on for the resolution of these open items. This information includes Safety Evaluation Report open items 91, 97.

Very truly yours, C. V. Mangan Vice President Nuclear Engineering 8 Licensing NLR:ja Enc los ure xc: Project File (2)

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