Text

Amend 47 to License DPR-34,changing Tech Specs to Allow Mechanical Snubbers to Be Replaced by Equivalent Hydraulic Snubbers
	ML20141N545
Person / Time
Site:	Fort Saint Vrain
Issue date:	03/04/1986
From:	Berkow H; Office of Nuclear Reactor Regulation
To:	;
Shared Package
ML20141N544	List: ML20141N543; ML20141N545; ML20141N547;
References
	NUDOCS 8603170040
	Download: ML20141N545 (18)
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! o NUCLEAR REGULATORY COMMISSION

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PUBLIC SERVICE COMPANY OF COLORADO DOCKET NO. 50-267 FORT ST. VRAIN NUCLEAR GENERATING AMENDMENT TO FACILITY OPERATING LICENSE Amendment No.'47 License No. DPR-34

, 1.: The Nuclear. Regulatory Comission'(the Commission) has f'und thatb ' [

A. The application for amendment by Public Service Company of

,, Colorado (the licensee) dated December 6, 1985 complies with the standards and requirements of the Atomic Energy Act of 1954, as amended :(the Act), and the Comission's rules and '

-regulations set forth in 10 CFR Chapter I; 8 .~ The facility will operate.in conformity with the application,

the provisions of the Act, and the rules and regulations of the Comission;-

C.. There is reasonable assurance (1) that the activities authorized by this amendment can be conducted without

._ endangering the health and safety of the public, and (ii) that

[ such activities will be conducted in compliance with the Comission's regulations; D. The issuance of this amendment will .not be inimical to the i common defense and security or to the health and safety of the public; and ,

E. The issuance of this amendment is in accordance with 10 CFR Part 51 of the Commission's regulations and all applicable requirements have been satisfied.

9 k 8603170040 e60304 -

PDR ADOCM 05000267 P PM ,

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2. Accordingly, the license.is amended by changes to the Technical Specifications as indicated in the attachment to this license amendment, and paragraph 2.D(2) of Facility Operating License No.

'DPR-34 is hereby amended to read as follows:

I, (2) Technical Specifications

.The Technical Specifications contained in Apper. dices A and B, -

as revised through Amendment No. 47 , are hereby incorporated in the license. The licensee shall operate the facility in '

accordance with the Technical Specifications.

~3. This license amendment is effective as of the date of its issuance.

FOR THE NUCLEAR REGULATORY COMMISSION l

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He, t N. Berkow, Director Standardization and Special Projects Directorate '

Division of PWR Licensing-B

Attachment:

Changes to the Technical Specifications Date of Issuance: March 4, 1986 s

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c AliACHMENT TO LICENSE AMENDPENT NO. 47 r

Jy[FACILITYOPERATINGLICENSENO.DPR-34

~ DOCKET NO. 50-267

' Replace the'following pages~ of the Appendix A Technical . Specifications-with the attached pages as indicated. .The revised pages are-identified by amendment _ number and contain vertical lines ' indicating' the areas of. t change. ,

Remove Insert s'

4.3-7 4.3-7 4.3-8 4.3-8 4.3-9 4.3-9 4.3-10 4.3-10 4.3-11 4.3-11 4.3-12 4.3-12.

4.3-13 4.3-13 4.3-14 4.3-14 4.3-15 4.3-15

.4.3-16 4.3-16 5.3-9 5.3-9 5.3-10 5.3-10 5.3-11 5.3-11 5.3-15 5.3-15 5.3-17 5.3-17 r

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Fort St. Vrain el Tcchnical Specifications Amendment No. 47 Page 4,3-7 Specification LCO 4.3.10 - Shock Suppressors (Snubbers) -

Limitine condition for operation al The reactor shall not be operated at power unless all shock suppressors (snubbers) on Class I piping systems

.(1isted in Table 4.3.10-1) are operable except as--

l noted in b) through di of this LCo.

b) With one or more snubbers inoperable in a Class I system or subsystem, within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months replace or restore the inoperable snubber (s) to operable status and perform an engineering evaluation per Specification SR 5.3.8.c) on the supported component or declare the supported system inoperable and follow the appropriate action statement for that system, c) If the requirements of al and b) of this LCO cannot be met, an orderly shutdown shall be initiated and the reactor shall be in a low power condition within 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months .

d) If a shock suppressor is determined to be inoperable while the reactor is in the shutdown or refueling mode, the suppressor shall be made operable or replaced prior to reactor operation at power.

el Shock suppressors may be added to Class I systems .

without prior License Amendment to Table 4.3.10-1, l-

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Fort St. Vrain 01 Technical Specifications Amendment No. 47 Page 4.3-8 provided a revision to Table 4.3.10-1 is included with l

a subsequent License Amendment request.

pasis for Specification Leo 4.3.1o Shock suppressors (snubbers) are designed to prevent unrestrained pipe motion under dynamic loads, as might I

occur during an earthquake, while allowing normal thermal motion during startup and shutdown. The consequence of an inoperable snubber is an increase in the probability of .

structural damage to piping resulting from the dynamic loads produced by a seismic event. It is therefore necessary that all snubbers required to protect the class I systems, subsystems, or components be operable during reactor power operation.

Because snubber protection is required only during relatively low probability events, a period of 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months is allowed for repair or replacement. In case a shutdown is recuired, the allowance of 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months to reach a low power condition will permit an orderly power reduction consistent with standard operating procedures. Since reactor operation at power should not be conducted with defective safety-related ecuipment, reactor power operation is prohibited with inoperable snubbers, except as stated above.

p' Tcchnical Specifications ,

Amendment No. 47 Page 4.3-9 v ,

-TABLE 4.3.10-1 CLASS I SHOCK SUPPRESSORS Turbine Water Drain Snubbers l TWDS-1 TWDS-7 TWDS-2 TWDS-8 TWDS-3 TWDS-9 TWDS-4 TWDS-10 i "WDS-5 TWDS-12 TWDS-6 TWDS-13 TWDS-14 Cold Reheat Snubbers - Circulators '

CRS-C1-1 CRS-C3-1 CRS-C1-2 CRS-C3-2 CRS-Cl-3 CRS-C3-3 CRS-Cl-4 CRS-C3-4 CRS-Cl-5 CRS-C3-5

.CRS-Cl-6 CRS-C3-6 CAS-C2-1 CRS-C4-1 CRS-C2-2 CAS-C4-2 CRS-C2-3 CRS-C4-3 CRS-C2-4 CRS-C4-4 -

CRS-C2-5 CAS-C4-5 CRS-C2-6 CRS-C4-6 Y

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Fort St. Vrain el Technical Specifications Amendment No. 47 Page 4.3-10 TABLE 4.3.10-1 (Continued)

CLASS I SHOCK SUPPRESSORS (Continued) l Cold Reheat Snubbers CRS-29 CRS-377 CRS-591 CRS-31 CRS-870 CRS-378 CRS-632 CRS-871 CRS-72 CRS-379 CRS-636 CRS-76 CRS-872 CRS-381 CRS-664 CRS-879 CRS-104 CPS-382 CRS-674 CRS-880 CRS-114 CRS-386 CRS-707 CRS-144 CRS-881 CRS-388 CRS-742 CRS-90.1 CRS-146 CRS-389 CRS-751 CRS-187 CRS-910 CRS-420 CRS-752 CPS-911 CRS-191 CRS-421 CRS-765 CRS-921 CRS-219 CRS-422 CRS-766 CRS-931 CRS-229 CRS-431 CAS-768 CRS-262 CRS-951 CRS-445 CRS-769 CRS-955 CRS-297 CRS-446 CRS-821 CRS-962 CRS-317-1 CRS-474 CRS-822 CRS-964 CRS-317-2 CRS-476 CRS-827 CRS-967 CRS-320 CRS-517 CRS-828 CRS-969 CRS-321- CRS-521 CRS-829 CRS-972 CRS-323 CRS-549 CRS-831 CRS-976 CRS-324 CRS-55/-1 CRS-832 CRS-977 CRS-371 CRS-556-2 CRS-836 CPS-978 CRS-372 CRS-589 CRS-838 Boiler Feed Snubbers-Steam Generators BFS-B1-1 BFS-B1-4 BFS-B2-1 BFS-82-4 BFS-B1-2 BFS-B1-5 BFS-B2-2 BFS-82-5 BFS-B1-3 BFS-B1-6 BFS-B2-3 BFS-82-6

r For2 St. Vrain el Technical Specifications Amendment No. 47 Page 4.3 11 TABI.E 4.3.10-1 (continued)

CI. ASS I SHOCK SUPPRESSORS (Continued) l Not Reheat Snubbers HRS-23 HRS-193 HRS-348 HRS-24 HRS-507 HRS-194 HRS-349 HRS-515 HRS-26 HRS-196 HRS-351 HRS-58 HRS-520 HRS-201 HRS-356 HRS-525 HRS-59 HRS-202 HRS-357 HRS-61 HRS-540 HRS-205 HRS-378 HRS-546 HRS-69 HRS-220 HRS-379 HRS-94 HRS-243 HRS-561.

HRS-381 HRS-566 HRS-95 H RS-24 4 HRS-413 HRS-98 HRS-571 HRS-246 HRS-414 HPS-576 HRS-101 HRS-278 HRS-416 HRS-103 HRS-577 HRS-279 HRS-421 HRS-104 HRS-281 HRS-422

' HRS-957 HRS-105 HRS-958 HRS-299 HRS-428 HRS-961 HRS-12R HRS-314 HRS-468 HRS-129 HRS-966 HPS-315 HRS-470 HRS-971 HRS-131 HRS-318 HRS-501 HRS-158 HRS-972 HRS-321 HRS-505 HRS-985 HRS-159 HRS-324 HRS-506 HRS-990 HRS-161 Emergency Condensate Snubbers ECS-1 ECS-8 ECS-15-1 ECS-20 ECS-2 ECS-9 ECS-15-2 ECS-21 ECS-3 ECS-10 ECS-16 ECS-22 ECS-4 ECS-11 ECS-17 ECS-23 ECS-5 ECS-12 ECS-18 ECS-24 ECS-6 ECS-13 ECS-19 ECS-25 ECS-7 ECS-14

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Fort St.' Vrain el

. Technical Specification!!

Amenenent No. 47 Page 4.3 12 4

h-TABLE 4.3.10-1 (Continued)

-CLASS'T SNOCK SUPPRESSORS (Continued) l Melium vent Snubbers NVS-1-1 Hvs-2 HVS-3-1 I NVS-1-2 MVS-4-1 NVS-2-2 NVS-3-2 NVS-4-2 ,

Emergency Boiler Feed Snubbers BFS-14E BFS-142E BFS-245E BFS-15E BFS-374E BFS-143E BFS-257E BFS-380E BFS-16E BFS-154E '<

BFS-260E BFS-398E BFS-26E BFS-158E BFS-263E BFS-399E BFS-29E BFS-167E PFS-264E BFS-405E l

BFS-30E BFS-181E BFS-268E BFS-414E BFS-31E BFS-197E BFS-269E BFS-417E BFS-47E BTS-203E BFS-316E BFS-419E BFS-53E BFS-204E BFS-317E BFS-421E BFS-56E. BFS-210E -BFS-320E BFS-422E BFS-57E BFS-216E BFS-344E BFS-74E BFS-423E BFS-218E BFS-345E BFS-430E BFS-76E BFS-219E BFS-359E BFS-431E BFS-77E .BFS-2?8E BTS-344E BFS-432E BFS-89E BFS-229E BFS-366E BFS-442E !

BFS-122E BFS-243E BFS-367E BFS-444E -

BFS-141E BFS-244E I

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Fort St. Vrain #1 Technical Sp;cifications o Amendment No. 47 Page 4.3 13 TASLE 4.3.10-1 (Continued)

CLASS I SHOCK SUPPRESSORS (Continued) l Main Steam Snubbers MSS-9 MSS-125 MSS-281 MSS-584 MSS-16 MSS-126 MSS-284 MSS-17 MSS-688 MSS-135-1 MSS-291 MSS-696 MSS-18 MS!i-139 MSS-304 MSS-19 MSS-706 MSS-145-1 MSS-311 MSS-717 MSS-27 MSS-145-2 MSS-312 MSS-29 MSS-718 MSS-145-3 MSS-314 MSS-719 MSS-44 MSS-146 MSS-321 MSS-51 MSS-721 MSS-147 MSS-339 MSS-774 MSS-52 MSS-149 MSS-346 MSS-54 MSS-778 MSS-184 MSS-347 MSS-779 MSS-61 MSS-191 MSS-348 MSS-64 MSS-822-1 MSS-192 MSS-356 MSS-831 MSS-74 MSS-194 MSS-369 MSS-81 MSS-833 MSS-201 MSS-376 MSS-834 MSS-82 MSS-204 MSS-377 MSS-84 MSS-835 MSS-206 MSS-379 M3S-836 MSS-85-1 MSS-222 MSS-414 MSS-862 MSS-85-2 MSS-225 MSS-421 MSS-958 MSS-869 MSS-227 MSS-422 Mss-870 MSS-95C MSS-239 MSS-424 MSS-871 MSS-109 MSS-246 MSS-431 MSS-901 MSS-116 MSS-247 MSS-433 MSS-117 MSS-906 MSS-248 MSS-451 MSS-909 MSS-118 MSS-249 MSS-452 MSS-120-1 MSS-9'.1 MSS-257 MSS-453 MSS-912 MSS-120-2 MSS-258 MSS-495 MSS-987 MSS-120-3 MSS-274 MSS-583A MSS-908 l

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TABLE 4.3.10-1 (Continued)

CLASS I SHOCX SUPPRESSORS (Continued) l Boiler Feed Snubbies BFS-8 PFS-235 BFS-435 BFS-556 BFS-25 BFS-239 BFS-437 BFS-563 BFS-28 BFS-256 BFS-451 BFS-564 BFS-35 BFS-256-1 BFS-467 BFS-566 BFS-40 BFS-282 BFS-468 BFS-572 BFS-53 BFS-297 BFS-477 BFS-573 '

BFS-53A BFS-325 BFS-479 BFS-577 BFS-54 BFS-352 BFS-498 BFS-614 BFS-61 BFS-358 BFS-500 BFS-641

'* BFS-97 BFS-397 BFS-501 BFS-679 3 BFS-110 BFS-398 BFS-516 BFS-711 BFS-117 BFS-400 BFS-523 BFS-753 BFS-138 BFS-402 BFS-526 BFS-764 BFS-139 BFS-412 BFS-528 BFS-796 BFS-142 BFS-416 BFS-529 BFS-820 BFS-149 BFS-420 BFS-530 BFS-823 BFS-152 BFS-4?1 DFS-532 BFS-843 BFS-153 BFS-422 BFS-534 BFS-844 BFS-166 BFS-425 BFS-536 BFS-870 BFS-210 BFS-434-1 BFS-537 BFS-871 BFS-211 BFS-434-2 BFS-553-1 BFS-922 BFS-216 BFS-434-3 BFS-553-2 BFS-933 BFS-221

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Fort St. Vrain el Technical Specifications Amendment No. 47 Page 4.3-15 TABLE 4.3.10-1 (Continued)

CLASS I SHOCK SUPPRESSORS (Continued) l Mydraulie oil Snubberm N08-1 HOS-22 H05-46 H08-2 H05-72 Ho!-23 H08-48' H08-73 H08-3 H05-24 HOS-49 HOS-74 H08-4-1 HOS-25 H05-50 HOS-75 H08-4-2 H03-27 N08-51 N05-76 HOS-5 H05-28 H05-52 HOS-6 H08-77 H08-29 HS0-53 H08-78 H08-7 H05-10 H08-54 N08-79 H05-8 HOS-31 H08-55 NOS-9 N08-80 H05-33 MOS-56 MOS-81 H08-10 H05-34 H08-57 HOS-82 HOS-11 H05-35 H08-58 HOS-83 N05-13 HOS-36 HOS-59 HOS-84 H08-14 HOS-37 H08-60 H08-85 N05-15 H05-38 N05-61 H08-06 H08-16 NCS-39 H05-63 H05-87 HOS-17 H05-40 H05-64 H05-88 H08-18 F0E-41 H05-65 H05-89 i

H05-19 H05-42 H05-66 H05-90 HOS-20 H05-45 NOS-71 HOS-91 HOS-21 Vent Stack Snubbers VSS-101 VSS-100 VSS-114 VSS-120 VSS-102 VSS-110 VSS-116 VSS-122 VSS-104 VSS-111 VSS-117 VSS-123 VSS-105 VSS-113 VSS-119 VSS-124 VSS-107

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' .. Fort St. Vrafn 01 Technical Spect fications Amendment No. 47 Page 4.3 16 TABLE 4,3,10-1 (Continued)

CLASS I SNCCR SL'PPRESSORS (Continued) I l

.4 System 22 22-7-SN1 22-23-SN2 22-73-SN1 '

22-11-SN1 128-SN1 22-30-SN1 22-73-SN2 22-132-SN1 ,

22-23-SN1 22-68-SW1. 22-100-SN1. !

22-132-SN2 ,

System Instrumentation s f*, j I-73-SN2 I-179-SN1 I-179-SN2 l y Vent Stack Snubbers VSS-103 VSS-109 VSS-115 VSS-106 VfS-121 VSS-112 VSS-ils ,

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Technical Specifications Amendment No. 47 Page 5.3.*

activity level decreases to less than 10% of the limit of LCO 4.3.0, at which time weekly sampling may be resumed.

Basis for Specification SR 5.3.7 The specification surveillance interval is adequate to monitor the activity of the secondary coolant.

Specification SR 5.3.8 - Shock Suppressors fanubbers)

Surveillance The following surveillance requirements apply to all Class I piping system shock suppressors (snubbers) : l al visual Inspections The first in-service visual inspection of snubbers shall be performed within six months from issuance of this Technical Specification (Amendment 47) . For the l purpose of entering the schedule described in this section, be it shall assumed that the facility had been on a six-month inspection interval.

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Fort St..Vrain el Technical Specifications Anwndment No. 47 Page 5.3-10 The first in-service visual inspection of snubbers

, shall include all snubbers listed in Tables 4.3.10-1. l If less then.two snubbers are found inoperable during i:

the first in-service visual inspection, the second in-i service visual inspection shall be performed 12 months plus or minus 254 from the date of the-

first ,

inspection. Otherwise, subsequent visual inspections i shall be perforred in accordance with the following schedule: :

Number of Inoperable i Snubbers per Inspect;on Subsequent Visual Period Inspection Period 0 18 Months plus or minus 254 1 12 Months plus or minus 254 2 6 Months plus or minus 25%

3, 4 124 Days plus or minus 254 5, 6, 7 62 Days plus or minus 25%

8 or more 31 Days plus or minus 254 -.

The inspection interval shall not be lengthened more than one step at a time.

b) Visual Inspection Acceptance Criteria visual inspections shall verify (1) that there are no visible indications of damage or impaired operability, (2) attachments to the foundation or supporting structure are secure, and (3) in those locations where snubber movement can be manually induced without disconnecting the snubber, that the snubber has freedom of movement and is not frozen-up. Snubbers which appear inoperable as a result of visual i

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Fort St. Vrain 01 >

Technical Specifications.

Amendment No. 47 Page 5.3 11 inspections may be determined operable for the purpose of establishing the next visual inspection interval, providing that (1) the cause of the rejection is clearly established and remedied for that particular snubber and for other snubbers that may be generically susceptible, and (2) the affected snubber is functionally tested in the as-found condition and determined operable per section 5.3.8.d) and 5.3.8.el.

However, when the fluid port of a hydraulic snubber is found to be uncovered, the snubber shall be determined inoperable and cannot be determined OPERABLE via functional next testing for the purpose of establishing the i visual inspection interval. All snubbers f connected to an inoperable common hydraulic fluid reservoir shall be counted as inoperable snubbers. i c) runctional Tests At least once per 18 months (not to exceed 22 1/2 months) , a representative sample of each type of snubber shall be tested using one of the following sample plans: The sample plan (s) shall be selected l prior to the test period and cannot be changed during the test peried. The NRC Regional Administrator shall be notified in writing of the sample plants) selected for each type of snubber prior to the test period or the sample plan (s) used in the prior test period shall be implemented

1) At least 10% of the total of the type of snubber shall be functionally tested either in-place or in a bench test. For each snubber of that type that does not meet the functional test acceptance criteria of Specification SR 5.3.8.d) or SR 5.3.8.e), an additional 10% of that type of u

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Fort St. Vrain 01 Technical Specifications Amendment No. 47 i

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Saemation From Visual Inswetion'or Functional Tests Permanent or other exemptions.from the surveillance f

i program for individual snubbers may be granted by the !

Commission 'is- a justifiable basis for exemption is presented.. Snubbers se exempted'shall continue to be listed in-Table 4.3.10-1. l ;.

r g). Record Reesine -

Record keeping shall consist of: '

1) A historical record for each snubber shall be i maintained.

2) Concurrent with the first in-service visual inspection and at lea 7t once per refueling cycle

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l thereafter, the historical records for each i

snubber listed in Tablo 4.3.10-1 shall txe reviewed l

to determine any trends that may adversely affect i

service life.

3) The maximum expected service life for the various ,

seals,, seal materials, and applications shall be i determined and established based on engineering-information and the seals stall be replaced so that the maximum expected service life will not be

, exceeded during a period when the snubber is required to be OPERABLE. This monitoring program l

shall be fully implemented within 22 1/2 months i

l from the issuance of this Technical specification >

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(Amendment 39). 1, i

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' : Technical Sp;cifications #

Amendment No. 47

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. Basis for specification SR 5.3.8 r

All' Class I ' shock . s upp'rkssors (snub'berIl}arevisually-inspected for overall integrity and operability. The I) ,3 -

inspection , will include verification of proper g orientation, adequate hydraulic fluid level, when applicable, and proper attachment of snubber to piping and structures, i 1.

.The inspection frequency is based upon maintaining a 4, [.

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constant level of snubber protection. Thus, the required inspection interval varies inversely with the observed snubber failures. The number,nf inoperable snubbers found

'during a required inspection determines the time interval l/

for the next inspection. However, the results of such early inspection performed before the original pequired 4 i '

r time interval has elapsed (nominal time less 25 percent)

[4 may not be used to lengthen the required inspection interval. Any inspection where results require a shorter '

a 3 inspection interval will-override the previous schedulbJ f fl', :

Experience at operating facilities has shown that the required surveillance program should assure an acceptabli level of snubber performance previded that the seal materials are compatible with the operating environment, r To furtherincreaset!.eassbranceofsnubberreliability,

/, f functional tests should be performed once each refueling -

cycle. These tests will include stroking of the snubbers l.

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ML20141N545

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