ML18092A290

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Forwards Response to Generic Ltr 84-15 Re Proposed Actions to Improve & Maintain Diesel Generator Reliability.List of Diesel Generator Valid Failure History Encl
ML18092A290
Person / Time
Site: Salem  PSEG icon.png
Issue date: 09/26/1984
From: Liden E
Public Service Enterprise Group
To: Varga S
Office of Nuclear Reactor Regulation
References
GL-84-15, NUDOCS 8410040432
Download: ML18092A290 (9)
v • d • e


Text

Public Service Electric and Gas Company P.O. Box 236 Hancocks Bridge, New Jersey 08038 Nuclear Department September 26, 1984 Director of Nuclear Reactor Regulation

u. s. Nuclear Regulatory Commission Washington, D. c. 20555 Attention: Mr. Steven A. Varga, Chief Operations Reactors Branch 1 Division of Licensing

Dear Mr. Varga:

GENERIC LETTER 84-15 PROPOSED STAFF ACTIONS TO IMPROVE AND MAINTAIN DIESEL GENERATOR RELIABILITY SALEM GENERATING STATION DOCKET NOS. 50-272 AND 50-311 Pursuant to 10 CFR 50.54(f), PSE&G hereby submits its response to Generic Letter 84-15 concerning proposed actions to improve and maintain diesel generator reliability.

ITEM 1: REDUCTION IN NUMBER OF COLD FAST START SURVEILLANCE TESTS FOR DIESEL GENERATORS The Emergency Diesel Generators at both Salem Units do not undergo cold fast starts for surveillance testing or other testing. The diesel generators, which are manufactured by Alco, are equipped with a prelubrication system which is always in service when the diesels are not running. If the prelubrication system is to be taken out of service for a period of more than twelve hours, it is required that the diesel be run for 15 minutes at idle or 10 minutes under load. This was done at the recommendation of Alco in order to ensure that the diesel's internal parts remain lubricated and also to ensure that the lube oil temperature does not fall too low. If this is not done, the diesel is declared inoperable and the appropriate action statement entered.

( ~~R1004o4a2 s4 0926 ~,.

p ADOCK 05000272 PDR The Energy People 95-2168 (25M) 6-84

'Mr. Steven A. Varga 9/26/84 ITEM 2: DIESEL GENERATOR RELIABILITY DATA The diesel generator reliability data for both Salem Units is given in Table 1 (Attachment). The following is a synopsis of the data:

Diesels lA lB lC 2A 2B 2C

==================================================
  1. of Failures in Last 20 Valid Starts 0 1 1 0 1 0 Time Span 13mos lSmos 12mos Smos 4mos Smos
==================================================
  1. of Failures in Last 100 Valid Starts* 2/63 2/57 4/69 0 5 1 Time Span 43mos 44mos 4lmos 35mos 33mos 35mos
===================================================

Reliability 97% 96% 94% 100% 95% 99%

  • For Unit 1 Diesels, data is shown as #Failures/Total #Valid Starts to Date ITEM 3: DIESEL GENERATOR RELIABILITY In reviewing the proposed Performance Technical Specifications and their bases, it is clear that this system will give a more accurate indication of diesel generator reliability. There are several factors which lend themselves favorably to this conclusion. These are:
1) Maintaining diesel generator reliability records on a per diesel generator basis rather than a per nuclear unit basis. This will help to identify specific deficiencies of a particular diesel and will also serve to "weed out" any unreliable units.
2) The remedial action criteria are set up such that when a specific diesel is identified as being near the minimum desired reliability, corrective actions are taken to ensure that the reliability is improved with minimum effect on the other diesel generators for that nuclear unit.

'Mr. Steven A. Varga 9/26/84

3) The accelerated surveillance schedule will provide a mechanism to retain a good reliability status for a diesel in need of remedial action. As stated in Enclosure 3 of Generic Letter 84-15, "increasing the test frequency will allow for a more timely accumulation of additional test data upon which to base judgment of the reliability of the unit."
4) The goals of.0.95/demand being the minimum desired reliability and 0.90/demand being the minimum allowable reliability are realistic goals.
5) The extended time criteria for running the remaining operable diesels when an offsite circuit or another diesel is inoperable is beneficial. This will serve to prevent "overtesting" of diesel generators with good reliability records.

Concerning diesel generator inoperability limits, the 72-hour out-of-service time for a diesel generator cannot be lengthened without taking into consideration its effect on Technical Specification 3.0.5. As the purpose of this specification is to permit the action statements of systems, subsystems, trains, components, or devices to be consistent with the action statement of the associated electrical power source, raising the out-of-service time for a diesel generator would be inconsistent with this. If this were done, it would entail either raising the 72-hour limit for the systems, subsystems, trains, components, or devices powered by that electrical source, or redefining Technical Specification 3.0.5.

The current reliability programs for the diesels at Salem are as per the existing Technical Specifications.

Should you have any questions, please feel free to call us.

Sincerely, E. A. Liden Manager - Nuclear Licensing and Regulation Attachment C Mr. Donald c. Fischer Licensing Project Manager Mr. James Linville Senior Resident Inspector

STATE OF NEW JERSEY ss: COUNTY OF SALEM COUNTY OF SALEM RICHARD A. UDERITZ, being duly sworn according to law deposes and says:

I am a Vice President of Public Service Electric and Gas Company, and as such, I. find the matters set forth in our Response to Generic Letter 84-15, "Proposed Staff Action to Improve and Maintain Diesel Generator Reliability" dated September 26, 1984, are true to the best of my knowledge, information and belief.

'RICHARD A. UDERITLZ Subscribed and sworn to before me this* g~f/i day of ._,./~e()J{ J.e<u, 1984

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\~ i *'.~c , .* _; *. Notary Public of New Jersey

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e e TABLE 1 DIESEL GENERATOR RELIABILITY DATA UNIT 1 UNIT 2 1A 1B 1c* 2A 2B 2C:

1 SAT SAT SAT  ::;AT SAT SAT 2 SAT SAT SAT SAT SAT  :::AT

3 SAT SAT  ::;AT SAT UN:3AT SAT 4 UNSAT :3AT :3AT  :::AT SAT  ::;AT r: SAT UNSAT SAT UN SAT SAT SAT

7

3

.. SAT SAT SAT SAT SAT SAT

.IJNSAT SAT ..

SAT SAT SAT

_SAT 9 SAT SAT SAT SAT SAT SAT 1(I SAT SAT 8AT SAT 8AT SAT 11 SAT SAT :3AT SAT SAT SAT  :

12 SAT SAT SAT SAT  ::;AT SAT.

1:3 . SAT :3AT SAT SAT SAT SAT 14 SAT SAT SAT SAT :3AT SAT 15 SAT SAT SAT SAT UNSAT SAT 16 SAT SAT SAT :3AT

1*~

~~2 SAT SAT SAT SAT SAT SAT 2:3 SAT  :::AT  ::;AT SAT UNSAT SAT 24 SAT SAT :3AT SAT SAT SAT

.-... c:"

AT SAT
3AT  :::;AT UNSAT SAT L:b  ::;AT  :::AT SAT  :::AT SAT SAT 27 SAT :3AT :3AT SAT. SAT SAT 2:3 SAT SAT SAT :3AT SAT SAT 25"1 SAT SAT UNSAT SAT SAT SAT
3(1 SAT *SAT SAT SAT SAT SAT
31 SAT SAT :3AT SAT SAT SAT

.-*-=-.L.-. UNSAT SAT SAT SAT .SAT SAT

3:3 SAT SAT UNSAT SAT SAT SAT
34 SAT  ::;AT SAT SAT SAT  :::AT
35 SAT SAT SAT SAT SAT SAT
36 SAT SAT SAT SAT SAT SAT 37 SAT SAT SAT tiNSAT SAT SAT"
3:3 SAT SAT SAT SAT SAT SAT
39 SAT SAT UNSAT SAT  !:;AT SAT 40 SAT SAT SAT. SAT SAT SAT 41 SAT SAT SAT SAT :3AT SAT 42 SAT SAT SAT 'SAT SAT SAT 4~: SAT. SAT SAT SAT SAT SAT 44 :3AT SAT  :::AT SAT SAT SAT 45 SAT SAT SAT SAT SAT SAT

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TABLE .1 DIESEL GENERATOR RELIABILITY DATA UNIT 1 UNIT 2 1A 1B 1C 2A 2B 2C 46 SAT SAT SAT SAT SAT SAT 47 SAT SAT SAT SAT SAT  ::;AT 4:3 *sAT SAT SAT SAT 8AT SAT 4*;. SAT SAT SAT SAT SAT  ::;AT 50 SAT UNSAT SAT SAT* SAT SAT 51 SAT SAT *::;AT SAT SAT  ::;AT

~*")

/.-=--' SAT SAT SAT SAT SAT 6:3  :::;AT :3AT SAT SAT SAT 64 SAT SAT SAT SAT 65 :3AT SAT SAT  ::;AT 66 SAT  ::;AT :3AT  :::;AT 67 :3AT SAT  :::;AT  ::;AT 6:3 SAT :3AT  :::;AT  :::;AT 69 SAT SAT SAT SAT 70 SAT SAT  :::;AT 71 SAT SAT 8AT 72 :3AT SAT SAT 7:3 SAT 8AT SAT 74 SAT SAT :3AT 75 SAT  ::::AT SAT 76 :3AT SAT :3AT 77 SAT SAT SAT 7:3 SAT SAT SAT 79 :3AT :3AT  :::;AT

io :3AT  :::;AT SAT
31 SAT SAT SAT 82 :3AT :3AT  :::AT
3:3 SAT SAT  :::;AT 84  ::;AT SAT SAT
35  :::;AT  :::;AT  :::;AT
36 SAT SAT SAT
37  :.:;AT  ::;AT  :::AT
3:3 SAT SAT SAT
39 SAT  :=;AT UNSAT 90 SAT :3AT SAT 4

. *-\ .. ,.

e .9 TABLE 1.

DIESEL GENERATOR RELIABILITY DATA UNIT 1 UNIT 2 1A 1B lC 2A 2B 2c:

91 SAT SAT SAT 92 SAT SAT  :::;AT

  • 7:3  ::::AT UNSAT SAT
94. SAT SAT SAT 95 SAT :3AT SAT 96 SAT SAT SAT 97 *, .. SAT SAT SAT

102 SAT SAT SAT 103 SAT SAT SAT

.104 SAT SAT SAT 105  :::;AT UNSAT  ::::AT 106 SAT SAT SAT 107 SAT SAT SAT 10:3 SAT UNSAT SAT 10*? SAT SAT SAT 110 :3AT SAT SAT 111 :3AT SAT SAT 112 SAT SAT SAT 11:3 SAT *SAT SAT 1.14 SAT SAT SAT 115 SAT SAT. SAT 116 SAT SAT SAT 117 SAT SAT SAT 11:3 SAT SAT SAT 119 SAT SAT SAT 120 SAT SAT SAT 121 SAT SAT SAT 122 SAT SAT SAT 1.-,-:,

L*-* SAT SAT  ::::AT 124. SAT -SAT SAT

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1*-..~

126 SAT SAT SAT SAT SAT SAT 127 SAT SAT :3AT 128 SAT SAT SAT 129 SAT SAT SAT 1:30 SAT SAT SAT 1 ~:1 SAT SAT SAT 1*-**-..

e e TABLE 1 DIESEL GENERATOR RELIABILITY DATA UNIT 1 UNIT 2 1A 1B 1C 2A 2B 2c:

1:36 SAT  ::;AT SAT 1:37 SAT SAT  :::AT 1:3:3 SAT :3AT  :::AT 139 SAT SAT SAT 140 SAT SAT SAT 141 SAT :3AT 142 SAT 14::::'.  ::;AT 144 SAT 145 SAT 146 SAT  :

. 147 SAT 14:3 SAT 149 :3AT 150 6

......~., ..

DIESEL GENERATOR VALID FAILURE HISTORY Diesel Start No. Date Reason for Failur*e 2B 12/:3(1/80 Camshaft Fail ur*e

-=-

1A 4 (1:3/ 14/81 Gc*ver*nc*r* Cc*ntr*ol Oil Low

l.B 5 05/20/:31 Water .Jacket Leak 2A 5 01/17/81 Turbe* Bor.*st Pr* ob l em 2A 7 (1:3/12/81 LC*SS (If L*Jbe Oi 1 d*.1e tc* loose Crank*:ase I n s Pe ct i c* n C*:iver*

2B 15 06/25/81 Failed to achieve 900 r*Pm in 1 (I seconds 2B 1:3 07/01/81 Failed to achieve 900 r*Pm in 10 secc*nds 2B 23 07/13/:31 Failed to a.chi eve 900 rPm i r1 10 secc*nds

~-"B 25 07/15/81 Failed tc* achieve 900 r*Pm in 10 secc*nds 1C 29 12/29/:32 Cooler Outlet Valve Mal fun*:t i *:in 1A :32 02/10/8:3 Hi sh .Jad~et Water* TemPer*a t*Jr*e 1C

-.:*..:- 01 /30/8:3 Hi sh L*Jbe Oil TemPer*a tur*e  :

2A  :**37 08/14/81 Failed t*:* achieve 900 rPm i r1 1 (I se*:onds 1C :3*~ 04/28/:3:3 Hi sh .Jacket Water* TemPer-atur*e 1.B 50 12/2:3/83 .Jae ke t Water- Leak 1C 54 10/ 1:3/8:3 Hi sh Lubc:.- Oi 1 TemPeratur*e 2c:  :=:9 11I1:3/8:3 Failed tc* achieve 900 F""PITI 2B 9:3 09/07 /8:3 C*::ic*ler* Inlet Valve Ma 1 func t i c*n 2B 99 11 /07 /:33 Failed t 0 Load 2B 105 12/07 /:3:3 Vi:.1 l ta!:le Resulatc*r* Fail ur*e 2B 10::: 12/:3118~: Fuel Oil Leak Rec:iuir*ins Mar1ua 1 Shutdoliln 2B 1:35 o:3/ t::::/E:4 Phase B B*JS Differ*er1tial 7

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