ML20236L156
| ML20236L156 | |
| Person / Time | |
|---|---|
| Site: | River Bend  |
| Issue date: | 11/02/1987 |
| From: | Calvo J Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20236L160 | List: |
| References | |
| NUDOCS 8711100168 | |
| Download: ML20236L156 (6) | |
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' UNITED STATES -..
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g NUCLEAR REGULATORY COMMISSION q
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WASHINGTON, D. C. 20555 i
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GULF STATES' UTILITIES COMPANY DOCKET NO. 50-458 j
RIVER BEND STATION,-UNIT-1'
'f AMENDMENT TO FACILITY OPERATING LICENSE
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. Amendment No.Lls I
License No. NPF-47 1.
The Nuclear Regulatory Comission (the Commission or the:NRC) has found that:
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The application for amendment filed by Gulf States Utilities -Company, dated August 4, 1996 as amended August 15, 1986, supplemented September 26, 1966, amended September 8,1987, and: supplemented October 8, 1987, complies with the: standards and requirements of the Atomic Energy-Act of 1954, as amended (the Act), and the ~ Commission's regulations set forth in 10 CFR Chapter I; B.
The facility will operate-in conformity w' th the application, the i
provisions of the Act, and the regulations of the Comission; C.
There is reasonable assurance: -(i) 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 Commission's regulations, D.
The issuance of this amendment will not be inimical'to the 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.
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Accordingly, the license is amended by changes to license condition 2.C(8), Attachment 3 to Facility Operating License No. NPF-47. is hereby amended to read as follows:
8711100168 871102 ADOCK0500g8 DR
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ATTACHMENT:3 T0-NPF:47
'TDI DIESEL ENGINES REQUIREMENTS GSU shall comply with the following requirements related to the TDI diesel
- engines, q
1.
Change to the maintenance and surveillance program forithe TDI diesel engines, as identified and approved by the NRC staff. in Supplement 3'to ~
the SER, shall be subject.to the provisions' of '10 CFR.50.59.
The frequency of the major engine. overhauls referred to in.the license
. 1 conditions below shall be' consistent ~with SectionlIV.I. " Overhaul.
- j Frequency" in revision 2.of Appendix II of-the Design Review / Quality j
Revalidation' report which was transmitted by' letter dated May 1,1986,s from J. George, Owners Group, to H. Denton, NRC.
1 2.
Crankshafts shall be inspected as follows::
SD 18: During the first refueling outage,' inspect.theffillets'and oil
- s holes of the three most heavily loaded crankpin journals ~(Nos. 5, 6, andi l
7). with florescent liquid penetrant and ET as appropriate.
i 50 1A and 1B: During the second 'and third refueling ' outages,. inspect.
l the fillets and oil holes of two of.the.~ three most. heavily loaded crankpin journals in the manner just mentioned.
u SD 1A and 18: At approximate 5 year intervals subsequent to the third l
j refueling outage, inspect the fillets and oil holes using florescent R
liquid penetrant and ET as appropriate, of the :
a)'threemostheavily loaded crankpin journals (Nos. 5, 6, and 7), and b) main journalsclocatd-between crankpin journals 5, 6, and. 7...One engine may be Inspected at the refueling outage closest to 5 years,,and the.other' engine at the next refueling outage.
If cracks are found during inspections of cranksh'afts, this condition shall be reported promptly to the NRC staff and the affected engine shall be considered inoperable. The engine shall not be' restored to " operable status" until the proposed disposition and/or corrective actions have been approved by the NRC staff.
3.
Cylinder blocks shall be inspected for " ligament" cracks, " stud-to-stud" cracks and " stud-to-end" cracks as ~ defined in a report
- by Failure Analysis Associates, Inc. (FaAA) entitled, " Design Review of TDI R-4 and-RY-4 Series Emergency Diesel Generator Cylinder Blocks" (FaAA report no FaAA-84-9-11.1) and dated De'cember 1984.
(Noted that'the FaAA report specifies additional inspections to be performed.for_ blocks with "known" This report was transmitted to H. Denton, NRC, from'C. L. Ray, Jr., TDI Owners Group, by letter dated. December 11, 1984.
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-2 or" assumed"ligamentcracks).
The inspection intervals (i.e.,
frequency) shall not exceed the intervals calculated using the cumulative
~ damage index model in the subject FaAA report.
In addition, inspection method shall be.ccnsistent with or equivalent to those identified.in the subject FaAA report.
In addition to inspections specified in the aforementioned FaAA report, blocks with "known" or.." assumed ligament cracks" (as defined in the FaAA report) should be inspected at each refueling outage to determine whether or;not cracks!have initiated on the top surface exposed by the removal' of two or more cylinder heads.
This process should be. repeated over several:
refueling outages until the entire block top.nas been inspected..
Liquid-penetrant testing or a similarly sensitive' nondestructive testing technique should be used to detect cracking,-and eddy current should be :
used as appropriate to determine the depth of 'any cracks discovered.
If inspection reveals cracks in the cylinder blocks betwen stud holes of adjacent cylinders (" stud-to-stud" cracks) or " stud-to-end" cracks, this condition shall be reported promptly to the NRC staff and the affected engine shall be considered inoperable.
The engine shall not be restored to " operable status" until the proposed disposition and/or corrective actions have been approved by the NRC staff.
4.
The following air roll test shall-be performed as specified below, except k
when the plant is already in an Action Statement of Technical Specification 3/4.8.1, " Electric Power Systems, A.C. Sources":
j The engines shall be rolled over with the airstart system and with the cylinder stopcocks open prior to each planned start, unless that start j
occurs within 4. hours.of a shutdown.
The engines shall also be rolled j
over with the airstart system and with the cylinder stopcocks open after 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, but no more than 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, after engine shutdown and then rolled j
over once again approximately 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after each shutdown.
(In the event
'l an engine is removed from service for'any reason other than the rolling over procedure prior to expiration of the 8-hour or 24-hour periods noted above, that engine need not be rolled over while it is out of service.
The licensee shall air roll the engine over with the stopcocks open at the
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time it is returned to service.) The origin of any water detected in the cylinder must be determined and any cylinder head which leaks due to a crack shall be replaced.
The above air roll test may be discontinued following the first refueling outage subject to the following conditions:
All cylinder heads are-Group III heads-(i.e., cast after September 1980).
Quality revalidation inspections, as identified in the Design Review / Quality Revalidation report, have been completed for all cylinder heads.
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J Group III heads continue to demonstrate leak free' performance.
This should be confirmed with TDI before air roll tests are discontinued.
The following actgs are required if SD LA or SD IB is operated in j
5.
excess of 3130 KW period less than two' hours (g the range of 3130 KW to 3200 KW for a For indicated engine loads a)
, no additional action:shall be j
required.
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b)
For indicated engine' loads in the rangf 29f 3130 KW 'to '3200 KW for aL period equal to or exceeding'two hours
, a crankshaft _-inspection ~
pursuant to Item d below shall be performed at the next refueling
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outage.
q c)
For indicated engine log in the-range of 3200 KW to 3500 KW for a j
period less than I hour
, a crankshaft inspoction pursuant to j
item d below shall be performed for the affected engine at the next j
refueling outage.
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d)
F;rindicatedenginelodds'intherangI27f 3200 KW to 3500 KW for 1
- eriods equal to or exceeding one hour and for engine loads
.xceeding 3500 KW-for any period of time, (1) the engine shall.be j
removed from service as soon as safely possible, (2) the engine
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shall'be declared inoperable, and-(3) the crankshaft shall be inspec-j ted.
The crankshaft inspection'shall include crankpin journal i
numbers 5, 6, and 7 (the most heavily loaded) and the two main journals inbetween using florescent liquid penetrant and eddy current e appropriate.
6.
Periodic inspections of the turbocharger shall include the following The turbocharger thrust bearings should be visually inspected for excessive wear after 40 non-prelubed starts since the previous.-
visual inspection.
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Turbocharger rotor exial clearance should be measured at each refueling outage to verify compliance with TDI/Elliott i
specifications.
In addition, thrust bearing measurements should be compared with measurements taken previously to determine a need for further inspection or corrective action.
1 (1) Momentary transients (not exceeding 5 seconds) due to changing of bus-loads need not be considered as-an overload.
(2)
If there are multiple cverload events within a given load range since.the previous crar,kshaft inspection, then the time period criterion applies to the total accumulated time in that load range.
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Spectrographic'and ferrographic engine oil analysis-shall be performed quarterly to provide early evidence of bearing degradation.
Particular attention should be paid to' copper level and particuhte size, _which could signify. thrust bearing ' degradation. :
The nozzle ring components and! inlet guide vanes should be visually-inspected at.each refueling outage for missing parts or parts.
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showing distress on a'one-turbocharger-per-refueling-outage basis.
In addition, these inspections should.be performed,for all turbocharger at each turbocharger overhaul-(i.e., 'at approximately--
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- 5-year intervals).: If any missing parts or distress:is noted,--the entire: ring.' assembly should be replaced and the subject _ turbocharger ci should be reinspected at the next refueling outage..
7.
Operation beyond the first' refueling outage is subject to NRC staff
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approval based on the staff's final review of the Owners' Group generic.
.l findings and of the overall design review and quality revalidation l
program at River Bend.
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This' license : amendment ~is. effective as of:its date.of issuance.
N FOR THE NUCLEAR REE'LATORY COMMISSION
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' 4, C; dis Jose: A? Calvo,. Director
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Project. Directorate - IV Division:of:' Reactor, Projects -:III,
- IV, V andLSpecial Projects.
j 10ffice of' Nuclear Reactor Regulation ~
j tf Date of Issuance: November 2,1987 1
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