ML20247H152
| ML20247H152 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 09/15/1989 |
| From: | Morris K OMAHA PUBLIC POWER DISTRICT |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| LIC-89-897, NUDOCS 8909190228 | |
| Download: ML20247H152 (5) | |
Text
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7 Omaha Public Power District 1623 Harney Omaha. Nebraska 68102-2247 i
September 15, 1989 402/s36-4000 LIC-89-897
-U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Station PI-137 Washington, DC 20555
References:
1.
40cket No. 50-285 2.
Letter From OPPD (K. J. Morris) to NRC (Document Control Desk) Dated July 27, 1989 (LIC-89-662) 3.
Telephone Conference OPPD (P. Bemis) to NRC (A. Bournia and D. Kubicki) Dated 8/9/89 Gentlemen:
SUBJECT:
Request for Additional Information, Application for Amendment of Operating License Pertaining to Turbine Building Fire Water Curtain Enclosed please find Omaha Public Power District's response to the NRC's request for additional information with respect to reference 3.
Attachment A contains the requested testing scenario and additional evaluation supporting removal of the requirement for the turbine building water curtains from the SER. The enclosed drawings are provided to substantiate the testing scenario. OPPD requests that this requirement be deleted as previously stated in P.eference 2.
If you have further questions on this matter, please contact me.
Sincerely, 1
.J.
orris Division Manager Nuclear Operations KJM/pjc l
Enclosure pod c:
LeBoeuf, Lamb, Leiby & MacRae R. D. Martin, NRC Regional Administrator iA A. Bournia, NRC Project Manager P. H. Harrell, NRC Senior Resident Inspector
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4 ATTACHMENT A
- Testina Scenario Trip testing of the turbine building fire water curtain " deluge" valves (GEM Model F430 Thermal Control' Valve) would require fusing (melting) of the fusible link actuating assembly with the system under pressure.
This-constitutes a destructive test of the valve and an operating inconvenience due to the potential for water spray with the system under pressure.
Following the trip test, the valve would have to be disassembled and rebuilt using a new actuating assembly as well as 0-rings and seals.
Likewise, disassembly for internal visual inspection would require the replacement of the actuating assembly, 0-rings and seals per the manufacturers recommendation.
Evaluation Because either test method above requires replacement of the 0-rings and seals (the source of valve plug binding), and replacement of the entire actuating assembly itself also introduces an element of uncertainty regarding valve actuation, the "as left" condition of the valve provides no greater level of assurance of proper valve performance than that of the "as found" valve condition.
In fact, valve performance could be adversely affected due to the parts replacement occurring "in the field" rather than the controlled factory environment under which the valves were originally assembled.
Conclusion For these reasons and those given previously, OPPD feels that the SER requirement for the turbine building fire water curtains should be deleted.
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t55 wEg7tMNgTER STREET PROVIDENCE, M.1.
02903 j
THERMAL CONTROL VALVE MODEL F430_.
DESCRIPTION 7he owser is responsible for main-g ost'g
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The Model F430 Thermal Contnst tehday his / Ire protection system sad Valve is a small deluge valve with a derden be openrthy condition self contained heet actuating unif, it 7he' his contnsetor or manu.
is designed for use as a system control fsemare be centacted relative
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valve for deluge fire protection sys-so any guestions.
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tems of limited slas. The devios is A sde @ of M Valve also used in large systems es an eux-Actustbg Units insut be male.tained liiery deluge volve to control the flow on hand, he order to minimize the time FIGURES that the system is out of service fol-INSTALLATION DIAGRAM The Thermal Control Valve is rated for The Set Sorow is used by the manufac-a service pressure of 176 pel maximum DESIGN turer to adjust the spring tension of and is avaliable in 1 inch and 11/2 The Thermal Control Valw consists of the Fusible Assembly. After catibre-Inch NPT sizes with temperature ret-a Body Assembly. Plug Valve Assem-t!on, the Set Screw occess port is seal-ings of 166F/74C and 212F/100C.
bly and a heat responsive Valye Actua-ed off viith least The inlet and outlet tapped connec-ting Unit.
The unit is mounted to the Body with tions of each valve age the same size.
Body Assembly. The Body Assembly four brass Cap Screws (3).
APPROVALS AND STANDARDS-consists of a cast iron Body (1) and a The arms of the Top, in which the The Model F430 Thermal Control bronze Seat Ring (91. Identifications Fustble Asserssbty is mounted, are Valve is listed by Underwriters Labor.
are east in relsed letters on the Body color codsd-sdain for 165F/74C or stories, Inc. and Underwriters' Labor.
which is pointed red, white for 212F/100C temperature stories of Canada, it is apr. roved bY Plus Velve Assembly. The Plug Valve retings.
Facte y Mutunt Research Corp., the Assembly (8) consists of a bronze INSTALLATION Fire Offices' Committee and by the plug and vatve stem which are factory The Thermal Control Valve must be New York City Board of Standards assembled. The 0 Ring (10) is a sill-installed with a supply pressure Gauge and Appeals under Calendar Number cone elastomer. The Assemby is and 3/4" Dreiro Valve as shown in Fig-236--79-.SA.
mounted in the Body as shown in ure 5 and located so that the Valve fi0u'8 A-and adjeoent weter supply piping are leWtNING 7he Model F430 Thermal Control Verye Aervating Unit.The valve octus-not exposed to frweing temperatures.
Vahre rrsust be hutaned and main-ting unit consists of a Top (2) with a g
taksed in cornpliance with this docu-
'**"* 0~RI*0II *"A * **'d*YP*
Fusible Assembly (T) mounted with a The inlet and outlet connections mus.g t
ment, as well as with the applicable g
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- L**' # ' "*I"I"' ***'
standards of the Nathnal Fire ht>
- N **d *I"' ** * ** ' S* ' '
not open if these connections are section Association and/or the stand-f* IfI' reversed.
ards of any other authoritter havitt OPERATION
/ jurisdiction. Falkre to do so may The fusible link is fabricated from Wheri the Thermal Control Valve is in impsk' the proper-operation or copper and the linkage components its normal service condition, it is held integrity oj this device.
are bronze.
closed by the Vaive Actuating Unit.
When the temperature of the solder rises above its enett point. the Fusible f
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OM Assembly will separate allowing the -*-
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.I Vefve Lever to rotate on the Spirol a toCl?7e 3-Hex Head Cap.
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2.7 s se, I /.
Pin. Water supply pressure then forces screw. 5/18"-1 B r
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/'5 the Plug Valve open, thus permitting 14 Reavi c su a ese j
_s water to flow through the valve and
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into the system.
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assi 732
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.b E WI '35 6-vata t.sver e-7 sible As bly.
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-i R ESETTING f(
The Thermal Control Vane rnust be
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212F/100C A
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7 reset and the system restored to 8-rluG Valn Auv.
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j servia as soon as possible after en 9-5**t Nao j
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operation.
'Th#
m t
g g,,j Proceed as follows:
M-QgD"5 e A- - W
- 1. Close the Control Valve for the
$sNtIonhecte,
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I F f M'3 Water Supply.
e 1" or 1 %" NPT
- 2. Unserew the Cao Screws from 14-r'utlet Coanec60n.
FIGURE A Valve Body. Rerneve and d;scard 1"or 1%" NPT THERMAL CONTROL VALVE the spent Valve Actua ting Unit.
9 -81
_____________________________J
THERMAL CONTROL VALVE. MODEL F430 1
- 3. Remove the Plug Velve Assembly 20.0 from the Body. Inspect the plug
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velve and 0 Ring to be sure that I
they are in good condition. Cleon the interior of the velve Body, the seat ring bore and the Plug Valve Assembly with a lint free cloth.
Apply a port 60n of the Lubricant 8,0 (12) aff around the outside of the
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7,o plus velve 0 Ring.
6.0 Apoty the remainder of the Lubri.
cant e ound the inside of the new 5.0 volve actuating 0 Ring. Replace the "E
4.0 Plug Velve Assembly.
l 3.0
- 4. Mouct the new valve actuating unit j
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to the velve Body taking cere to cross tighters the Cap Screws evenly E
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with 72 to 96 in.lbs of torque. Be g
sure that the replacement actuating E
2.0 unit is of the proper temperature g
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- rating, p
- 5. Open the Control Velve in the Water Supply.
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[1,o The valve is now reset for service.
l FRICTION LOS$
g Pressure lots in pounds per square inch w
(psil versus flow rate in U.S. gallons E
a-0.6 per minute (spm) for the 1 and 11/2 inch Model F430 Thermal Control 0.s Velves is shown in Figure C.
The approximate friction loss (based on Hazen and Williams formula), ex-0.3 pressed in equivalent length of Sched.
ule 40 pipe is as follows:
Valve Flow Ft.of Mpe sire OPM C-100 C=120 0.2, g 4g
,g
,o g 4 FLOW RATE IN U.S. GALLON 8 PEM MINUTE OCPM)
FIGURE C, NOMINAL PRESSURE Lost ORAPH gg, Seller warrants for a period of one year from the dets of shipment Replacement Parts:
All items in the repleen nent parts list (wstranty penod) that the products The Lubricant required for the re.
are suitable fot sese with either 1 or fumished hereunder wilt he free from plamment of items 8,10 and 11 or 11/2 ind valves. The replacement defects in material and workmanship.
the Valve Actuating Unitt. must be Velve Actuating Units consists of ordered separately, items 2,4-7 and 11 es shown in Fig.
For further detaas or. Warranty, see ure A.
gg Replacement Parts (Fig. A)
CONVERSION FACTORS ORDERING PROCEDURE 8 - Plug Valve Assembly Following is a list of factors for con-tAooel F430 Thermal Control Valves
. PSN 92-010-1-006 verting English units of measurement and all replacernent parts must be or-10_ o. Ring, Dash No.217 referenced hereits to equivalent $1 dered by description and Product
. PSN 02-501-1-217 (Interna tional System) units. Items Srmbol Number (PSN). See WARN-11 - 0. Ring. D&sh No 112 marked with an asterisk are not recog-INC SECT /0N for spare Parts recom-
. PSN 62-5c1-1-112 nized Si units: however, they ate in-mendarlort.
12 - Lubricant.1.5 grems of Fluort l-ciuded since they are commonly used i
icone Grease in many countries.
Nor es reqdred*
. PSN 92-010-1-014 25.400 mm 1" Thermal Control Valve
- Replacement Vetve Actuating 1 inch 6.895 kPe,
165F/74C.
. PSN 55-010-1-005 Unit 1 psi 0.0699 bar 212F/100C
. PSN 55-010-1-008 165F/74C 0.07C3 kg/cm2, 1 1 '2" Thermal Control Valve
. PSN 52-011-1 -001
=
16bS/74C.
. PSN 55-010-1-001 212F/100C 1geh:n
- 3.785 dm3, 3.785 litres 212F /100C
. PSM 55-010-1-002 P5N S2-011-1-002
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