ML18022A475
| ML18022A475 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 12/02/1986 |
| From: | Cutter A CAROLINA POWER & LIGHT CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| NLS-86-445, NUDOCS 8612110190 | |
| Download: ML18022A475 (47) | |
Text
REGULA'/Y INPORNATION DISTR IBUTI(SYSTEN (R IDS)
ACCESSION NBR: 8612110190 DQC. DATE: 86/12/02 NOTARIZED:
NO DOCKET ¹ FACIL:50-400 Shearon Harris Nuclear Power Plant>
Unit ii Carolina 05000400 AUTH. MANE AUTHOR AFFILIATION CUTTERS A. B.
Carolina Power Cc Light Co.
RECIP. NANE RECIPIENT AFFILIATION DENTQNi H. R.
Office of Nuclear Reactor Regulation~
Director (post 851125
SUBJECT:
Forwards summary rept of Phase II components 5 status u/
respect to component insp 5 owners group recommended mods 8c insp/action still to be performed. Status of Phase II insp forwarded in response to 861024 OL.
DISTRIBUTION CODE:
AOOID COPIES RECEIVED: LTR J ENCL SIZE:
TITLE:
QR Submittal:
General Distribution NOTES:Application for permit renewal filed.
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- SQIt, Carolina Power & Light Company OEG
~en SERIAL:
NLS-86-445 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation United States Nuclear Regulatory Commission Washington, DC 20555 SHEARON HARRIS NUCLEAR POWER PLANT DOCKET NO. 50-400/LICENSE NO. NPP-53 TRANSAMERICA DELAVAL INC. (TDI) DIESEL GENERATORS
Dear Mr. Denton:
In a letter dated October 24, 1986, Carolina Power
& Light Company (CP&L) was issued an Operating License for the Shearon Harris Nuclear Power Plant (SHNPP), Unit 1.
Attachment 2, paragraph 7a. to the license states that:
7.
Prior to full power operation of Shearon Harris, the licensee shall provide the NRC with the following:
a.
The status of the Phase II component inspections.
Any Phase II inspection that has not been completed by full power operation shall be completed by restart following the first refueling.
Attachment A is a summary report of the SHNPP Phase II components and provides the requested status with respect to component inspections and Owners Group recommended modifications.
An earlier version of Attachment A was provided to the Owners Group (OG; Duke/MATS) for review, concurrence or comment, on CP&L's position for the following ten components; 02-380B, 02-310B, 02-341C, 02 345C ~ 02 630D ~ 02 4 10B > 02 4 1 lA~ 02 360B > 02 455B ~ 02 650B ~
The OG did not review site specific analyses (for example component 02-420) as the responsibility for these analyses resides with the owner per the OG Program (see DR/QR, Volume 1, Section 5).
The OG concurred with CP&L's position except for three components (02-380B, 02-410B, 02-411A) and CP&L's proposed resolution to four recommendations for component 02-650B (marked with an asterick in Attachment A).
Attachment B identifies Phase II inspection/actions still to be performed by CP&L and provides a schedule for their completion.
CP&L will perform the OG recommendations. for components 02-380B, 02-410B, and 02-411A and these actions have been incorporated in Attachment B.
8612ii01'VO 86i202 PDR ADOCK 05000400 P
PDR I
)'11 Fayettevifle Street o P. O. Box 1551
~ Rateigh. N. C. 27602
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OE,C 2 1986 For component 02-650B CP&L will obtain a resolution from the OG and will implement all required actions prior to restart from the first refueling outage.
Should you have'ny questions concerning this letter, please contact Mr. Patrick P. Carier at (919) 836-8165.
Yours very
- uly, A. B. Cutter Vice President Nuclear Engineering 6 Licensing PPC/kts (5079PPC)
Attachment cc:
Mr. B. C. Buckley (NRC)
Mr. G. F. Maxwell (NRC-SHNPP)
Dr. J.
Nelson Grace (NRC-RIX)
I~ uc 1 ~
Page 1 of 23 ATTACHMENT A TO NLS-86-445 SHEARON HARRIS NUCLEAR POWER PLANT TDI DIESEL GENERATORS
SUMMARY
OF OWNERS'ROUP PHASE II COMPONENT RECOMMENDATIONS (As of November 26, 1986) e The TDI Diesel Generator (DG) Owners'roup (OG) issued the SHNPP Design Review/Quality Revalidation (DR/QR) Report in late 1984.
This DR/QR Report consists of four volumes and addresses about 164 components utilized on the TDI DGs.
In the DR/QR, 15 subjects are referred to as Phase I components (see DR/QR Volume 1, Table 2-1),
and all others are referred to as Phase II components.
The Phase I components have been thoroughly addressed in previous correspondence to the NRC (e.g.,
see
,CP&L Letter Nos. NLS-86-360 dated September 18,
- 1986, and NLS-86-329 dated September 11, 1986).
However, in response to Low Power License Condition Number 7a, this table has been prepared to summarize the status of the SHNPP Phase II components with respect to the DR/QR recommendations.
The attached table was prepared by reviewing each component report contained in Volumes 2, 3, and 4 of the DR/QR from the viewpoint of OG recommended inspections and/or modidications
~be ond that reported as complete in -the DR/QR (i.e., work recommended to be done, but for which records had not been incorporated by, or provided to, the OG prior to preparation of the DR/QR).
In this table, the following words and meanings are used:
s None this means that there are no additional recommended inspections or modifications.
Work is complete this means that the inspections or modifications have been completed for the OG recommendations contained within the component report unless specifically noted to the contrary.
Implicit in this meaning is the assumption that Field Change Requests (FCRs) have been effectively implemented.
The OG effort as reflected in the SHNPP DR/QR encompassed generic and site-specific analyses and evaluations.
- However, the SHNPP installation was in the construction stage when a significant portion of the site-specific DR/QR work was performed.
In many places in the SHNPP DR/QR, the following typical words are found (these are from R'eport 02-450A):.
"A field walkdown was performed at Shearon Harris.
- However, a
review of this component in its entirety was not possible since portions of the piping and tubing were not installed at the time of the walkdown.
Therefore, component acceptability and any subsequent recommendations shall be based upon the lead engine reports (Comanche
- Peak, Grand Gulf, and Catawba)."
(1138NEL'/ccrc)
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Page 2 of 23 Subsequent to the issuance of the SHNPP DR/QR, in several cases it has been determined that the actual SHNPP constructed configuration is satisfactory and no modification was necessary.
In this event, documentation has been placed in the file and the attached table reflects "work is complete" or "no further action is necessary".
To avoid misunderstanding, it must be noted that the following guidance was utilized in preparing the attached table:
a.
It only addresses Phase II components.
b.
It does not normally address maintenance and surveillance (M&S) items because the individual component reports have not been revised to be consistent with the OG M&S Program, Revision 2, which was transmitted to the NRC by a May,l, 1986 letter from Mr. J.
B George (Chairman, TDI OG) to Mr. H. Denton.
The Justification for the M&S changes was also provided in the noted May 1, 1986 letter.
CP&L has previously committed to the NRC to implement Revision 2 of the OG M&S Program.
c.
This table does not address items which are noted as being unresolved (such as nonconformance reports) when the DR/QR was printed (in late 1984).
There are other site programs which assure resolution of those items.
d.
For any individual component, an OG recommendation is only addressed
- once, even though it might appear more than once in a component report (it might be in the report text and then also included in. the DR and/or QR checklist).
To provide confidence that the review has been thorough, each SHNPP Phase II component report contained in the DR/QR is identified in this table.
Where there might be a question of interpretation, clarifying remarks have been provided.
In this table, it can be determined'that there.are 279 items in the OG recommendation column (each engine is counted separately),
and the following summary statements can be made:
1.
The SHNPP program 'has completely addressed the OG recommendations.
2.
The OG inspections (not including modifications) have been completed
~ence t Eot Components 02-380B, 02-410B, 02-4114, end 02-360B.
In each
- case, a reasonable alternative action was pursued.
3.
Necessary clarifications and exce tions to the OG M&S Matrix, Revision 2 are identified on pages II, 17, and 20.
4.
For Component 02-650B, it should be understood that when adequate diode and SCR temperatures have been demonstrated for one complete plant fuel cycle, then the monitoring (6 items; I.A.I through I.B.3) may be discontinued.
(1138NEL/ccrc)
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Page 3 of 23 Component Number and Name Paraphrased OG Recommendation Status/Comment or Justification VOLUME 2 F-068, Intercooler Modification should be made to add a low point drain downstream; both engines.
Appropriate drains already existed.
Work is complete.
02-CFR, Turbo-charger Thrust Bearing Lubricant System Three items, both engines.
Work is complete.02-375, Intake Manifold and Piping (LB)
Three items, both engines.
Work is complete.
02-380A, Exhaust Manifold There are four recommendations concerning replacement of slip points with welded flanges; both engines.
Subsequent to the DR/QR
- issuance, Duke Power Company performed an analysis for SHNPP, which justifies the adequacy of the existing configuration.
02-380B, Exhaust Three items, both engines.
Manifold:
Gasket and Bolting Work ie done
~exce t verifi cation of capscrew torques; both engines.
This bolting does not have a specific torque requirement, is exposed to exhaust temperatures (about 1000'F),
and is installed without lubricant per TDI instructions.
The bolting was installed evenly and snug.
No abnormal observations during operation of both engines.
02-436A, Inter-cooler Piping:
Pipe (LB only)
None 02-436B, Inter-cooler Piping:
Coupling, Gaskets, and Bolting None 02-475A, Turbo-Three items, both engines.
charger:
Brackets Work is complete.
(1138NEL/ccrc)
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Page 4 of 23 Component Number and Name Paraphrased OG Recommendation Status/Comment or Justification 02-475B, Air Butterfly Valve Assembly Three items on "A" engine.
One item on both engines.
Both engines vere delivered with the grease fittings (SIM 322) installed.
"A" inspections vere satisfactory.
Work is complete.
02-475C, Turbo-See 02-475A.
charger Bracket:
Bolting and Gaskets 02-, 805B, Intake Air Filters None 02-805C, Intake Air Silencer None 02-805D, Flex Connections None 00-420, Lube Oil Pressure Regulating Valve None 02-307A, Lube Oil Fittings:
None 02-307A, (SB)
None 02-307B, Lube Oil Fittings:
Internal Tubing and Fittings (SB)
None 02-307D, Lube Oil Fittings:
Internal Supports (SB)
None 02-420, Engine-Driven Lube Oil Pump Install a Dresser Coupling in pump suction line to mitigate loadings on the pump nozzle; both engines.
the Site-stress analysis performed a calculation Justifying adequacy of existing configu-ration for both engines.
No further action is necessary.
02-465A, Lube Oil Lines External Tubing, Fittings, Couplings (LB)
One item, both engines.
Work is complete.
(1138NEL/ccrc)
5~i S Page 5 of 23 Component Number and Name Paraphrased OG Recommendation Status/Comment or Justification 02-465A, Lube Oil Lines - External Tubing, Fittings, Couplings (SB)
See 02-465B (SB).
02-465B, Lube Oil Lines - External Supports (LB)
None 02-465B, Lube Oil Lines External Supports (SB)
Two recommendations concerning support modifications; only "B" engine.
Work is complete.
02-465C, Lube Oil Lines External Valves None 02-465D, Lube Oil Keep Warm Strainer None 02-467A, Turbo-charger Lube Oil Fitting:
Piping (LB) 02-467A, Turbo-charger Lube Oil Fittings and Piping (SB)
Remove Dresser Couplings and replace with welded flanges; both engines.
See 02-467B (SB).
Site-stress analysis performed a calculation Justifying adequacy of existing configuration for both engines.
No further action is necessary.
02-467B, Turbo-charger Lube Oil Fitting:
Supports (LB)
One support modification recommendation; both engines.
Work is complete.
02-467B, Turbo-charger - Lube Oil Fittings:
Supports (SB)
Addition of one three-directional Work is complete.
support recommended; both engines.
02-540A, Lube Oil Sump Tank with Strainer Assembly and Mounting Hardware Two items, both engines.
Work is complete.
02-540B, Lube Oil Sump Tank Misc.
- Fittings, Gaskets,'ipe and Bolting None (1138NEL/ccrc)
Page 6 of 23 Component Number and Name Paraphrased OG Recommendation Status/Comment or 'Justification 02-540C, Lube Oil See 02-540A.
Sump Tank:
Mounting Hardware 02-717H, Auxiliary Sub-Base
& Oil &
Water Piping Lube Oil:
Pipe and Fittings (LB)
None 02-717H (SB) 02-717I, Auxiliary Sub-Base
& Oil &
Water Piping Lube Oil:
Valves Two support installation guide-Work is complete.
lines recommended; both engines.
None 02-717J, Auxiliary Sub>>Base
& Oil &
Water Piping - Lube Oil:
Gaskets and Bolting None 02-717K, Auxiliary Sub-Base
& Oil &
Water Piping Lube Oil:
Supports and Mounting Hardware (LB)
None 02-.717K (SB) 02-820A, Lube Oil Full Pressure Strainer Verify that supports provide a
minimum of two directions of restraint; both engines.
None Work is complete.
02-820B, Lube Oil Heat Exchanger None 02-820C, Misc.
Equipment
- Heater, Lube Oil Sump Tank 02-820D, Lube Oil System Auxiliary Lube Oil Pump None None (1138NEL/ccrc)
Page 7 of 23 Component Number and Name Paraphrased OG Recommendation Status/Comment or Justification 02.-820E, Full Flow Lube Oil Filter None 02-820F, Lube Oil Keep Warm Pump None 02-820G, Lube Oil Keep Warm Filter None 02-310B, Main Bearings 1.
After 100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> run or pre-operational testing, perform a
'isual or LP of shells.
Minimum sample to be No.
5 main bearing shells.
A LP was done on "A" in November 1985 (after 200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br />) with satisfactory results.
"B" was visually inspected before site operation.
The OG Revalidation Checklist No.
gR 02-02-310B identifies this inspection as on a "single engine per station".
Therefore, work is complete.
2.
Perform a dimensional check of shell for thickness.
No.
5 shell was checked for both A and B (preoperational).
Work is complete.
02-310C,'Crank-shaft and Bearings:
Thrust Bearing Ring None 02-311A, Crank-case:
Crankcase Assembly None 02-311D, Crank-case:
Crankcase Mounting Hardware None 02-386B, Crank-Two items; both engines.
case:
Crankcase Gaskets and Mounting Hardware Work is complete.
02-315D, Cylinder Block Liners and Jacket Water Manifold and Piping (LB)
None 02-315F, Cylinder Block Liners and Water Manifold Cylinder Head Nuts One item, both engines.
Work is'complete.
(1138NEL/ccrc)
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Page 8 of 23 Component Number and Name Paraphrased OG Recommendation Status/Comment or Justification 02-315G, Cylinder Block Liners,and Water Manifold:
Seals and Gaskets One item, both engines.
Work is complete.
02-385B, Cylinder Block Covers:
Gaskets and Bolts Two items, both engines.
Work is complete.
VOLUME 3 02-441A, Starting Air Manifold Piping, Tubing, and Fittings (LB)
None 02-441A (SB)
None 02-441B, Starting Air Manifold:
Valves, Strainers, and Filters Free flowing drains should be added to the air distribution filter; both engines.
Drains existed on both engines when delivered.
Work is complete.
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'2-441C, Starting Air Manifold Supports (LB)
Four support modifications from the lead engine DR/QR are recom-mended for implementation; both engines.
A site-specific analysis has justified the adequacy'f the
'xisting configuration for both engines.
No further action is necessary.
02-441C (SB)
Two support modifications (one Work is complete.
per engine) were recommended for implementation.
02-442A, Starting Three items on both engines.
Air Distributor:
One item on one engine.
Distributor Assembly Work is complete.
02-442B, Starting Air Distributor:
Tubing, Fittings, and Gaskets See 02-44IA and C
and 02-307B.
02-835D, Starting Air Tank None 02-341B, Piston:
One item, both engines.
Rings Work is complete.
(1138NEL/ccrc)
ee Page 9 of 23 Component Number and Name Paraphrased OG Recommendation Status/Comment or Justification 02-34IC, Piston Pin Assembly Two items on both engines.
Two items on "A" engine.
Work is complete
~exce t for the installation of piston pin snap ring retrainers on both engines.
The OG recommendation for replacement of the pin retaining rings is based upon the ring rotating in two directions.
The existing spiral ring retainers were installed per TDI directions (used Locktite to prevent rotation; Drawing No. 03-341-02, Revision C) for both the "A" and "B" engines.
As presented in CPSL's Letter to NRC of February 11, 1986 (NLS-85-464, Attachment B'), the retaining rings on the "A" engine pistons were examined after 200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br /> of operation and found satisfactory.
Per the M&S Matrix (page 'II-C-6), a sample piston pin inspection is to be performed at the five-year interval.
For the sample, the rings will be replaced at that time. If a problem is detected during that inspection, all rings will be replaced.
If no problems are detected, the remaining rings will be replaced during the 10-year overhaul.
Also, wrist pin R-5 was reused as it was found acceptable per Letter No. OGTP-444-0-267, dated October 24, 1984.
02-345A,'appets One item, both engines.
and Guides:
Intake and Exhaust Tappet Assembly Work is complete.
02-345B, Tappets One item,'oth engines.
and Guides:
Fuel Tappet Assembly Work is complete.
(1138NEL/ccrc)
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Page 10 nf 23 Component Number and Name Paraphrased OG Recommendation Status/Comment or Justification 02-345C, Tappets The DR/QR says "Quality Revali-and Guides:
Fuel dation is not required".
- However, Pump Base Assembly it also has a sentence that says "Initial bolt torque should be as specified in the TDI manual".
When the engines were received, the fuel in)ection pumps were mounted on the block.
They have not been removed and no evidence of improper timing or leaks has been observed during site testing.
No action is necessary.
02-350A, Camshaft:
Camshaft Assembly One item, both engines.
Work is complete.
02-350B, Camshaft:
Camshaft Bearing None 02-350C, Gear Train Assembly One item, both engines.
Two items on "A" engine.
Work is complete.
02-362A, Subcover One item, both engines.
02-390A, Rocker One item on "B" engine.
Shaft A'ssemblies:
Intake/Intermediate and Exhaust Work is complete.
Work is complete.
02-390B See 02-390A.
02-390E, Rocker Arms and Pushrods:
Bushings None 02-335B, Front Gearcase:
Bolting and Gasket One item, both engines.
One item on "B"'engine.
Work is compl'ete.
02-355A, Gear Train Assembly See 02-350C.
One item on "A" engine.
Work is complete.
02-355B See 02-350C and 02-355A.
02-355C, Idler One item on "A" engine.
Gear Assembly Bolting and Gaskets Work is complete.
02-330A, Flywheel 02-330B, Flywheel Bolting None None (1138NEL/ccrc)
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0 Page 11 of 23 Component Number and Name 02-630A, Engine and Auxiliary Module Wiring Material and Fittings:
- Conduit, Fittings, and Supports 02-630B 02-630C
,02-630D, Pyrometer Conduit Assembly Thermocouples Paraphrased OG Recommendatio'n'ne general item on both engines.
One item on A.
One item on B.
See 02-630A.
See 02-630A.
None Status/Comment or Justification Work is complete.
02-688A THE OG MAINTENANCE.6 SURVEILLANCE MATRIX (REVISION 2, PAGES II-C-21 AND -22)
INCLUDES THREE RECOMMENDATIONS ON THESE THERMOCOUPLES (TC'S)'NE OF THESE IS TO "CLEAN AND INSPECT THERMOCOUPLES AND THERMOCOUPLE SHIELDS AS REQUIRED."
THESE TC'S ARE LOCATED IN EACH CYLINDER HEAD EXHAUST PIPE AND ON THE TURBOCHARGERS.
THE ACTUAL TC IS CONTAINED IN A METAL TUBE WHICH IS POSITIONED IN THE EXHAUST GAS PATH.
THE REMOVAL OF THE TUBE (WHICH IS THE SHIELD) AND CLEANING AND INSPECTION OF THE TUBE EXTERIOR SURFACE WILL BE THE BASIS FOR SATISFYING THIS RECOMMENDATION.
See 02-630A.
.02-688C, Engine and Auxiliary Module Wiring Material-Boxes and Terminals None 02-688D, On-Engine Alarm Sensors None 02-689, Off-Engine Alarm Sensors None 02-410A, Over-speed Trip:
Governor Two items, both engines.
Work is complete.
(1138NEL/ccrc)
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Page 12 of 23 Component Number and Name Paraphrased OG Recommendation Status/Comment or Justification 02-410B, Over-speed Trip:
Governor and Accessory Drive Assembly Five items on the "A" engine.
Work is complete
~exes c for governor shaft visual, LP, and dimensional check (three items).
As a result of a visual examination, both assemblies were returned to TDI for rework.
Thrust clearances were verified after
" rework.
02-410C, Over-speed Trip:
Couplings One item, both engines.
Couplings were replaced.
Work is complete.
02-410D, Over-speed Trip Vent Valve None 02-411A, Governor One item on "A" engine.
Drive:
Governor Tachometer Drive Gear and Shaft Due to visual inspection
- results, component was returned to TDI for rework (shaft and bushings were replaced).
Resinstalled without further site inspection.
02-411B, Governor Drive:
- Pins, and Keys Three items, both engines.
Couplings were replaced.
Work is complete.
02-413A, Governor Linkage Two items, both engines.
Work is complete.
02-415A, Governor Assembly:
Woodward Governor None 02-'415B, Governor Assembly:
Booster Servomotor One item on "B" engine.
Work is complete.
02-415C, Governor Assembly Heat Exchanger One item, both engines.
Work is complete.
02-695A, Engine Shutdown Equip-ment -'ubing/
Fittings Supports (SB)
Four support fixes on both engines.
Seven support fixes on "B" engine.
Work is complete.
(I.138NEL/ccrc)
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Page 13 of 23 Component Number and Name Paraphrased OG Recommendation Status/Comment or Justification 02-695B, Engine
'hutdown Equipment Valves, Regulators, and Orifices 02-695C, Engine Shutdown Trip Switches None I
None VOLUME 4 02-316A, Jacket-Water Inlet Manifold Manifold Assembly with Hard-ware and Coupling and Gaskets (LB)
One item, both engines.
Work is complete.
02-316B See 02-316A.
02-316C, Jacket Water Inlet Manifold' Vent Line to Discharge Manifold It is recommended that the supports for the vent line be verified to have sufficient strength; both engines.
This vent line was deleted from the design and thus there are no applicable supports.
No action necessary.
02-317A, Jacket Water Discharge Manifold/Piping (LB)
None 02'-317B See 02-317A.
~02-317C, Water One support verification (or Discharge Manifold: modification); both engines.
Supports (LB)
As-built supports were found to satisfy criteria.
Work is complete.
02-435A, Jacket Water Fittings Pipe and Fittings (1.B) 02-435A (SB)
One general support modification recommended; both engines.
None A site-specific stress analysis has demonstrated the adequacy of the as-built conditions.
No action necessary.
02-435B, Jacket Water Fittings:
Supports (LB)
See 02-435A (LB).
02-435C, Jacket Water Inlet Fittings:
Valves None (1138NEL/ccrc)
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Page 14 of 23 Component Number and Name Paraphrased OG Recommendation Status/Comment or Justification 02-437, Turbo Water Piping (LB)
None 02-437 (SB)
None 02-700A, Jacket Water Standpipe:
Pipe, Fittings, and Gaskets Install a vent line per TDI design; both engines.
Two support verifications/
modifications; both engines.
Work is complete.
The as-built supports were inspected and fudged to be adequate.
Work is complete.
02-700B, Jacket Water Standpipe Valves
- None, 02-700C, Jacket Water Standpipe:
Pipe Supports Two items, both engines.
Work is complete.
02-700E, Jacket Water Standpipe:
Switches One item, both engines.
During our review of the switch acceptability, it.has been determined that the switch needs to be replaced.
A component compatible with the J.W.'ystem chemistry is to be installed before the first refueling outage ends.
02-700F, Jacket One item, both engines.
Water Standpipe and Misc. Bolting Work is complete.
02-717B, Aux. Sub Base
& Oil & Water Piping Jacket Water:
Valves None 02-717D, Aux. Sub Base
& Oil & Water Piping Jacket Water:
None 02-717D (SB)
One item, both engines.
Work is complete.
(1138NEL/ccrc)
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Page 15 of 23 Component Number and Name I
02-717E, Aux. Sub Base
& Oil & Water Piping - J.W.:
& Bolting Paraphrased OG Recommendation None Status/Comment or Justification 02-717F, Aux. Sub Base
& Oil & Water Piping Jacket Water:
Supports (r.B)
None 02-717F (SB)
One item, both engines.
The as-built configuration was evaluated and is considered satisfactory.
Work is complete.
02-810A, Misc.
Equipment Heater Jacket Water None 02-810C, Jacket Water Heat Exchanger None 02-810D, Jacket Water Standby Heater Pump None 02-810E, Jacket Water:
Thermo-static Valve One item, both engines.
Work is complete.
02-360B, Cylinder Head Valves:
Intake and Exhaust Valves Four items, both engines.
One item on "A" engine.
Work 1e comp1ete
~exec t that the dimensional check of the valve-to-valve guide clearance was only performed on the "A" engine.
Also, the "A" engine was reinspected following about 200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br /> of site operation with satisfactory valve clearance results.
As the "B" engine operation has been satisfactory (as shown by exhaust temperatures and'firing pressures) and the operating data is to be recorded and evaluated, no further action is necessary.
02-360C, Cylinder
.Head and Valves:
Bolting and Gaskets Two items, both engines.
Work is complete.
4 (1138NEL/ccrc)
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Page 16 of 23 Component Number and Name Paraphrased OG Recommendation Status/Comment or Justification 02-360D, Cylinder Head and Valves:
Springs One item on "A" engine.
Work is complete.
02-365A, Fuel Injection Pump None 02-365B, Fuel In5ection Equipment Fuel Infection Tips None 02-365D, Fuel Infection Equipment:
Supports (SB)
None 02<<371A, Fuel Control Rod Linkage and Bearings One item, both engines.
One item on "A" engine.
Work is complete.
02-371B, Fuel Pump Linkage:
Linkage Assembly and Bearing See 02-37IA.
02-413B, Fuel Pump Linkage:
Automatic Shutdown Cylinder None 02-445, Fuel Oil Booster Pump None 02-450A, Fuel Oil Header:
Piping/
Tubing Due to a vibration concern it is recommended that the 3/4 inch threadolet be changed to a socket welded tee; both engines.
SHNPP does not have 3/4 inch tubing or the corresponding reducing fittings.
In addition, supports have been added per 02-450B and thus the vibration concern is no longer considered applicable.
No action is necessary.
(1138NEL/cc))
Page 17 of 23 Component Number and Name Paraphrased OG Recommendation Status/Comment or Justification 02-450B, Fuel Oil Header:
Fuel Oil Supports (SB) 02-455A, Fuel Oil Filters and Strainers:
Filters Three items on the "A" engine.
Three items; both engines.
None Work ie complete
~exec t for two items on both engines.
A change was proposed for one of the two-directional restraints on the fuel oil drip header.
The as-built supports were inspected and found to satisfy the OG criteria.
- Also, the recommendation for an anchor on the fuel-oil-to-day-tank return piping was evaluated and found not necessary.
No action is necessary.
02-455B, Fuel Oil Filters and Strainers:
Strainers One item, both engines.
The DR/QR recommendation is to place the strainer with a coarser design that would require less maintenance.
From a flow viewpoint, the strainer is between the day tank and the fuel pump.
The recommendation of changing the strainer to a coarser design is considered to be nonconservative and not desired.
Infector protection is enhanced by retaining the existing design.
No action is necessary.
THE OG MAINTENANCE & SURVEILLANCE MATRIX (REVISION 2, PAGE II-C-17)
CONTAINS TWO RECOMMENDATIONS FOR THIS COMPONENT:
ONE OF THESE IS TO "PURGE AIR FROM THE STANDBY STRAINERS - AS REQUIRED."
IN ACCORDANCE WITH THE DESIGN, THE SHNPP INSTALLATIONDOES NOT HAVE ANY INSTALLED EQUIPMENT TO ACCOMPLISH THIS PURGE.
THE PURGE IS ACCOMPLISHED BY A SLOW TRANSFER OF DUTY FROM ONE STRAINER TO THE
- OTHER.
THESE STRAINERS HAVE BEEN CHANGED DURING THE START-UP TESTING PROGRAM AND THE PROCEDURE UTILIZED HAS PROVED SATISFACTORY.
02-455C, Fuel Oil Filters and Strainers:
Mounting Hardware None 02-717M, Aux. Sub Base and Oil and Water Piping Fuel Oil:
Piping and Fittings (SB) 02-717P, Aux. Sub Base Oil and Water Piping - Fuel Oil:
Bolting and Gaskets None None (1.138NEL/ccrc)
ev i Page 18 of 23 Component Number and Name Paraphrased OG Recommendation Status/Comment or Juhtif'ication 02-825A, Fuel Oil Day Tank
'one 02-825B, Fuel Oil System Fuel Oil Duplex Strainer None 02-650A, Emergency Diesel Generator None 02-650B, Generator Controls The report in the DR/gR consists of written text and three attachments.
Because of the number of recommendations (which apply to both engines) and their different categorizations, this component is treated specially in this table.
The guidance for the three attachments (as identified on page 5 of the component report) is as follows:
Attachment 1 to be implemented prior to'lacing the engine in standby service.
Atta'chment 2 to be implemented by, or prior to the first refueling outage.
The implementation of these recommendations eliminates the recommendations of Sections IA, IB, and IC of Attachment I.
Attachment 3 - to be implemented at the discretion of CP&L.
Attachment I to 02-650B I.A.1. Monitor the maximum temperature of the diodes by using a temperature sensitive label.'he label should be of the type that permanently blackens at 275'F.
Temperature sensitive labels are installed for both engines.
Work is complete.
I.A.2. Monitor the diode labels before and.after each running of the diesel generators.
Required by current procedures.
Work is complete.
I.A.3. If the temperature label indicates that 275'F has been
- exceeded, then perform an electrical test of the diode, remove the diode from the
- heatsink, and inspect the mounting threads.
If acceptable, replace the diode and heatsink and ensure proper mounting tightness.
Required by current procedures.
Work is complete.
(1138NEL/ccrc)
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Page 19 of 23 Component Number and Name Paraphrased OG Recommendation I.B.I. Monitor SCR temperatures in a manner similar to the diodes.
The temperature limit is 220'F.
Status/Comment or Justification Temperature sensitive labels are installed for both engines.
Work is complete.
I.B.2. Monitor the SCR labels before and after each running of the diesel generator.
Required by current procedures.
Work is complete.
I.B.3. *If the temperature label indicates, that 220'F has been
- exceeded, remove, test, and reinstall acceptable components.
Required by current procedures.
Work is complete.
I.C.1. Coat the sides of the lugs and mounting bolt for the lugs that attach to the bottom of the diode and SCR heatsinks with Glyptol lacquer.
Put on a readily visible side so that relative motion can be detected.
Work is complete.
I.C.2. Inspect the heatsink lug connections after each monthly test. If necessary, retighten connections and reapply Glyptol.
II.A.1. On the five adjustment potentiometers, coat one side of the ad).
screw on the circuit board with Glyptol lacquer.
Required by current procedures.
Work is complete.
The recommendation for coating the adjustment screws is based upon a vibration concern.
At SHNPP, the control cabinets are located in a separate room away from the DG; the building is seismically designed.
The equipment was qualified by vibration testing at WYLE Laboratories.
There have been no observed vibration-induced problems with these components during the startup test program (over 300 hours0.00347 days <br />0.0833 hours <br />4.960317e-4 weeks <br />1.1415e-4 months <br /> on the "A" engine and over 150 hours0.00174 days <br />0.0417 hours <br />2.480159e-4 weeks <br />5.7075e-5 months <br /> on the "B" engine).
The existing configuration is considered adequate.
II.A.2. If adjustments are
- needed, remove the Glyptol and reapply when the work is complete.
See following comment.
(1138NEL/cc5)
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Page 20 of 23 Component Number and Name Paraphrased OG Recommendation Status/Comment or Justification II.B.1. At each outage, remove the cover of the voltage regulator enclosures and inspect the components mounted on the circuit boards for cleanliness.
The cabinet air inlets have their own filter and the cabinets sit in a separate closed room.
Cleanliness inside the cabinets has not been a problem.
Inspection is not required.
RECOMMENDATIONS II.A.I, II.A.2, AND II.B.I ARE IN THE OG M&S MATRIX, PAGE II-C-3, AS. ITEMS 7 AND 8.
- HOWEVER, THERE IS NO KNOWN APPLICABLE ADVERSE OPERATING EXPERIENCE WHICH JUSTIFIES THESE ACTIVITIES.
COVER REMOVAL FOR ACCESS TO THE POT SCREWS WAS ATTEMPTED DURING OUR START-UP PROGRAM AND RESULTED IN INTERNAL CONNECTING WIRES BEING INADVERTENTLY DE-TERMINATED.
THESE THREE ITEMS ARE CONSIDERED TO HAVE A POTENTIAL FOR REDUCING RELIABILITY AND WILL NOT BE PERFORMED.
II.C.I. An adequate supply of spare parts should be maintained.
III. Replace the field flashing relay with one properly rated.
The relay should be an enclosed type.
IV. The left rear and center cabinets must be ventilated or cooled so that the internal air temperature does not exceed 120 F.
This is the perogative of the utility and our spare parts inventory is adequate.
No action is necessary.
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The primary concern with the relay was based upon the specified voltage rating.
An analysis of the voltage drop, based upon the actual installed wiring, has shown that the voltage at the relay will be greater than 100V which is the lower value of the installed relay's rating.
The other relay. concerns of contact voltage rating, contact current
- ratings, continuous and interrupting ratings, and open versus enclosed contacts have been independently assessed for the SHNPP equipment'nd the existing relay is considered to be ad'equate.
No action is necessary.
Filtered inlets and exhaust fans (5) were installed on the Control Panels as a unit (not on center rear cabinet).
The air temperatures are within the limit.
(1138NEL/ccrc)
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Page 21 of 23 Component Number and Name Paraphrased OG Recommendation Status/Comment or Justification Attachment 2 to 02>>650B I.A.
The bridge rectifier assembly in the left front cabinet must be ventilated so that the internal air tem-perature does not exceed 140'F.
I.B.
The diodes should be mounted on the heatsinks with drilled holes, nuts, and lockwashers and properly tightened.
Filtered inlets and exhaust fans (5) were installed on the Control Panels as a unit.
The air temperatures are within the limit.
CP&L is working to have the diode/heatsink mounting properly modified.
This will be done before the end of the first refueling outage.
I.C.
The SCRs should be mounted on the heatsinks with drilled holes, nuts, and lockwashers and properly tightened.
An inspection of the SHNPP equipment has shown conformance to the OG criteria.
Work is complete.
I.P.1.
The bolted on lug arrangement must be redesigned so that there are no more than two lugs o'n each bolt.
The two lugs on a terminal is a general good'practice but is primarily aimed at screw-type terminals.
The terminals in question are stud connections (stronger due to larger size).
The installation has been inspected and the conductors are not exerting undue loadings on the studs and there is no evidence of stud deformation.
During the heatsink/diode modifications (see Attachment II, Item I.B. comment),
to the extent reasonable, these lug/
bolt arrangements will also be modified.
I.D.2. Heatsink anodizing must be removed in the contact areas of all bolts and bus bar studs.
While generally a good practice, discussions with the vendor has indicated that the anodizing process used (ALODINE 00014) has electrical and thermal properties equivalent to the heatsink material.
This surface treatment prevents adverse long-term oxidation and degradation
'of the interface.
In addition, SHNPP has used a coupling gel (which is acceptable to the vendor) for the mounting of the components and this is equal ta or better than bare surface contact.
No additional action is necessary.
(1138NEL/ccrc)
e
Page 22 of 23 Component Number and Name Paraphrased OG Recommendation Status/Comment or Justification I.D.3. Current carrying surfaces of lugs must not be separated by washers or nuts.
II; Any integrated circuit which is in the TO-5 package shall be replaced with those of the DIP or mini-DIP package.
An inspection of the SHNPP equipment has shown conformance to the OG criteria.
Work is complete.
An inspection of the SHNPP equipment has shown that DIP packages were used and the OG criteria is satisfied.
Work is complete.
III.'he lug* arrangement of the power circuit reactors should be modified so that there are no more than two lugs on any one bolt.
The connection in question is a through bolt with one lug on one side of the bus and two lugs on the other side.
The bolt is not overly stressed and the cables/lugs are not overly loading the bolt.
The existing configuration is satisfactory.
No action is necessary.
Attachment 3 to 02-650B Five item categories, both engines.
These items are recommended to improve long-term reliability and are clearly identified as discretionary.
The items require design evaluation before implementation and, due to the higher priority of other items, have not yet been addressed in detail.
They have been identified as items to be addressed after commercial operation of the plant..
02-650C, Generator:
Shaft and Bearings None 02-500A, Control Panel Assembly:
Cabinet/System None 02-500F, Control Panel Assembly:
Accumulator None 02-500G, Control Panel Valves None (1138NEL/cc))
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Page 23 of 23 Component Number and Name Paraphrased OG Recommendation.'.,'tatus/Comment or Justification 02-500H, Control Panel Assembly:
Pressure Switches None 02-500J, Control Panel Assembly:
Control Relays None 02-500K, Control Panel Assembly:
Solenoid Valves None 02-500M, Control Panel Assembly:
Piping, Tubing, Fittings None 02-500N, Control Panel Assembly:
Terminal Boards/
Switches, Wiring None 02-550, Foundation Bolts Anchor Bolts, Miscellaneous Hardware None 02-717A, Auxiliary Skid One item, both engine's.
The auxiliary sub-base is non-ASME.
The skid piping and supports are designs in accordance with the ASME Code, are seismic, and have been N-5 stamped.
The equipment is considered acceptable.
Work is complete.
(1138NEL/ccrc)
F
Page 1 of I ATTACHMENT B TO NLS-86-445 TDI DIESEL GENERATORS FUTURE CP&L ACTIONS CP&L had requested Owners'roup (Duke/MATS personnel) review and concurrence or comment on an earlier version of Attachment A.
As a result of the review and where necessary, the CP&L position in Attachment A has been revised to be 'consistent with the results of the Owners'roup review.
As a summary of Attachment A, CP&L will complete the following inspect'ions and actions prior to restart from the first refueling outage:
I.
Page 3, Component 02-380B:
The capscrew torques (without lubricant) will be checked/corrected for both engines.
2.
Page 12, Component 02-410B:
The remaining QR inspections will be performed on the A engine components.
3.
Page 12, Component 02-411A:
The remaining gR inspections will be performed on the A engine components.
4.
Page 14, Component 02-700E:
An acceptable
)acket water standpipe level transmitter will be installed for both engines.
5.
Page 21, Component 02-650B, Item I.B:
Complete the diode/heat sink modification for both engines.
(1226NEL/ccrc)
II
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