ML20134A991
| ML20134A991 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 01/24/1997 |
| From: | SOUTHERN CALIFORNIA EDISON CO. |
| To: | |
| Shared Package | |
| ML20134A989 | List: |
| References | |
| NUDOCS 9701290210 | |
| Download: ML20134A991 (16) | |
Text
_ . _ . _ - - . - . _ . - - - . - . _ - . .. . . . . . - . _ . . _ _ . . . _ - _ _ _ _ _ _ . - . _ . . . - . . _ _ . _ . . _ . _ . . .
1 -
1 1 .
1 s
j NPF-10/15-477 i
.)
i i
.i
- i I
i i
i j
i l
ATTACHMENT "A"
- (Existing Specifications) l Unit 2 t
i i
1 i
a i -
i 1
1 u
i i
t i
3 i
4 1
?
9701290210 970124 i PDR ADOCK 05000361
- p PDR-
a.
l s
AC Sources--Operating i 3.8.1 e #
j SURVEILLANCE REQUIREMENTS (continued)
SURVEILLANCE FREQUENCY I
SR 3.8.1.9 -------------------NOTE-------------------
i i Credit may be taken for unplanned events l that satisfy this SR.
i 3
Verify each DG, when operating with design 24 months i basis kW loading and maximum kVAR loading j
permitted during testing, rejects a load l 2 682 kW, and:
1
- a. Following load rejection, the
{
frequency is s 66.75 Hz; 4
- b. Within 4 seconds following load i
rejection, the voltage is 2 3924 V and
{
i s 4796 V; and
! c. Within 4 seconds following load i
rejection, the frequency is 2 58.8 Hz i
and 5 61.2 Hz.
- (
i
'r SR 3.8.1.10 -------------------NOTE----- --------
Credit may be taken for unplanned events that satisfy this SR.
i j
Verify each DG, when operating with design 24 months i
basis kW loading and maximum kVAR loading permitted during testing, does not trip and i voltage is maintained s 5450 V during and i
following a load rejection of.2 4450 kW and
! s 4700 kW.
1 1
1~
j (continued) i I
i i
i
,' SAN ON0FRE--UNIT 2 3.8-8 Amendment No. 127 i
I
1 AC Sources-Operating B 3.8.1 BASES 1
SURVEILLANCE SR 3.8.1.6 (continued) l REQUIREMENTS to maintain an adequate volume of fuel oil in the day tanks i
' during or following DG testing. In such a case, a 31 day ;
Frequency is appropriate.
SR 3.8.1.7 q See SR 3.8.1.2.
) Transfer of each 4.16 kV ESF bus power supply from the normal offsite circuit to the alternate offsite circuit demonstrates the OPERABILITY of the alternate circuit distribution network to power the shutdown loads. The
' 24 month Frequency of the Surveillance is based on ,
engineering judgment, taking into consideration the unit conditions required to perform the Surveillance, and is intended to be consistent with expected fuel cycle lengths.
Operating experience has shown that these components usually
' pass the SR when performed at the 24 month Frequency Therefore, the Frequency was concluded to be acceptable from j
a reliability standpoint.
j This SR is modified by a Note which acknowledges that credit may be taken for unplanned events that satisfy this SR.
1 Each DG is provided with an engine overspeed trip to prevent damage to the engine. Recovery from the transient caused by the loss of a large load could cause diesel engine overspeed, which, if excessive, might result in a trip of
, the engine. This Surveillance demonstrates the DG load response characteristics and capability to reject the largest single load without exceeding predetermined voltage and frequency and while maintaining a specified margin to the overspeed trip. For this unit, the single load for each DG is the Auxiliary Feedwater pump and its horse)ower rating is 800 HP. As required by IEEE-308 (Ref. 13), t1e load rejection test is acceptable if the increase in diesel speed does not exceed 75% of the difference between synchronous (continued) s SAN ONOFRE--UNIT 2 B 3.8-18 Amendment No. 127 1
4 i .-
AC Sources-Operating B 3.8.1
- s .
! BASES j SURVEILLANCE SR 3.8.1.9
' (continued) .
REQUIREMENTS speed and the overspeed trip setpoint, or 15% above i synchronous speed, whichever is lower.
The time, voltage, and frequency tolerances specified in i
this SR are derived from Regulatory Guide 1.9 (Ref. 3)
} recommendations for response during load sequence intervals. ,
4 i
4 The 4 seconds specified is equal to 80% of a typical ,
5 second load sequence interval associated with sequencing ,
j of the largest load. The voltage and frequency specified are consistent with the design range of the equipment powered by the DG. SR 3.8.1.9.a corresponds to the maximum i i frequency excursion, while SR 3.8.1.9.b and SR 3.8.1.9.c are steady state voltage and frequency values to which the 1 I
i system must recover following load rejection. The 24 month '
Frequency is consistent with the recomendation of t
Regulatory Guide 1.9 (Ref. 3).
i In order to ensure that the DG is tested under load conditions that are as close to design basis conditions as possible, testing is performed using design basis kW loading i$ and maximus kVAR loading permitted during testing. These loadings represent the inductive loading that the DG would i
experience to the extent practicable and is consistent with ,
the intent of Regulatory Guide 1.9 (Ref. 3).
This SR is modified by a Note which acknowledges that credit j may be taken for unplanned events that satisfy this SR.
I load equal to 94.5% to 100% of its continuous rating without i
overspeed tripping or exceeding the predetermined voltage limits. The DG full load rejection may occur because of a system fault or inadvertent breaker tripping. This i
Surveillance ensures proper engine generator load response under the simulated test conditions. This test simulates the loss of the total connected load that the DG experiences following a full load rejection and verifies that the DG ,
l will not trip upon loss of the load. These acceptance '
criteria provide DG damage protection. While the DG is not expected to experience this transient during an event and (continued)
SAN ON0FRE--UNIT 2 B 3.8-19 Amendment No. 127 i
NPF-10/15-477 1
1 l
l l
l ATTACHMENT "B" (Existing Specifications)
Unit 3
AC Sources--Operating 3.8.1 4
SURVEILLANCE REQUIREMENTS (continued)
SURVEILLANCE FREQUENCY J
l SR 3.8.1.9 --------=- --
NOTE-------- =-------
' Credit may be taken for unplanned events that satisfy this SR.
! Verify each DG, when operating with design 24 months basis kW loading and maximum kVAR loading permitted during testing, rejects a load 2 682 kW, and:
1
) a. Following load rejection, the i
a frequency is s 66.75 Hz;
- b. Within 4 seconds following load rejection, the voltage is 2 3924 V and s 4796 V; and
- c. Within 4 seconds following load rejection, the frequency is 2 E8.8 Hz and s 61.2 Hz.
SR 3.8.1.10 --------==---
--NOTE-------------------
Credit may be taken for unplanned events that satisfy this SR.
- Verify each DG, when operating with design 24 months i
basis kW loading and maximum kVAR loading permitted during testing, does not trip and voltage is maintained s 5450 V during and
- following a load rejection of 2 4450 kW and 1 $ 4700 kW.
(continued) 4 4
SAN ON0FRE--UNIT 3 3.8-8 Amendment No. 116 4
l i
- i 4 !
AC Sources-Operating !
4 B 3.8.1 l 4 A
{ BASES l 1
SURVEILLANCE SR 3.8.1.6 (continued)
REQUIREMENTS f
i to maintain an adequate volume of fuel oil in the day tanks during or following DG testing. In such a case, a 31 day Frequency is appropriate.
, SR 3.8.1.7 See SR 3.8.1.2.
i o
i
! Transfer of each 4.16 kV ESF bus power supply from the i normal offsite circuit to the alternate offsite circuit demonstrates the OPERABILITY of the alternate circuit i
i distribution network to power the shutdown loads. The
- 24 month Frequency of the Surveillance is based on engineering judgment, taking into consideration the unit
< conditions required to perfore the Surveillance, and is intended to be consistent with expected fuel cycle lengths.
4 Operating experience has shown that these components usually
- pass the SR when performed at the 24 month Frequency Therefore, the Frequency was concluded to be acceptable from 4
a reliability standpoint.
- This SR is modified by a Note which acknowledges that credit may be taken for unplanned events that satisfy this SR.
j SR 3.8.1.9 i
i Each DG is arovided with an engine overspeed trip to prevent damage to tle engine. Recovery from the transient caused by the loss of a lar overspeed, which,ge load could cause if excessive, mightdiesel resultengine in a trip of the engine. This Surveillance demonstrates the DG load response characteristics and capability to reject the i
largest single load without exceeding predetermined voltage and frequency and while maintaining a specified margin to the overspeed trip. For this unit, the single load for each ,
i
' DG is the Auxiliary Feedwater pump and its horse)ower rating )
- is 800 HP. As required by IEEE-308 (Ref. 13 , tie load l rejection test is acceptable if the increase)in diesel speed !
does not exceed 75% of the difference between synchronous l
(continued) 4 3 SAN ONOFRE--UNIT 3 B 3.8-18 Amendment No. 116
AC Sources-0perating ;
B 3.8.1 l BASES l SURVEILLANCE SR 3.8.1.9 (continued)
REQUIREMENTS )
speed and the overspeed trip setpoint, or 15% above synchronous speed, whichever is lower.
The time, voltage, and frequency tolerances specified in l this SR are derived from Regulatory Guide 1.9 recommendations for response during load sequenc(Ref. 3) e intervals.
The 4 seconds specified is equal to 80% of a typical )
5 second load sequence interval associated with sequencing of the largest load. The voltage and frequency specified 1 are consistent with the design range of the equipment l powered by the DG. SR 3.8.1.9.a corresponds to the maximum i frequency excursion, while SR 3.8.1.9.b and SR 3.8.1.9.c are 1 steady state voltage and frequency values to which the ;
system must recover following load rejection. The 24 month Frequency is consistent with the recommendation of l i
Regulatory Guide 1.9 (Ref. 3).
In order to ensure that the DG is tested under load conditions that are as close to design basis conditions as possible, testing is performed using design basis kW loading l and maximum kVAR loading permitted during testing. These loadings represent the inductive loading that the DG would {
experience to the extent practicable and is consistent with the intent of Regulatory Guide 1.9 (Ref. 3).
This SR is modified by a Note which acknowledges that credit may be taken for unplanned events that satisfy this SR.
SR 3.8.1.10 This Surveillance demonstrates the DG capability to reject a load equal to 94.5% to 100% of its continuous rating without overspeed tripping or exceeding the predetermined voltage limits The DG full load rejection may occur because of a ;
system fault or inadvertent breaker tripping. This Surveillance ensures proper engine generator load response under the simulated test conditions. This test simulates the loss of the total connected load that the DG experiences following a full load rejection and verifies that the DG will not trip upon loss of the load. These acceptance criteria provide DG damage protection. While the DG is not expected to experience this transient during an event and (continued)
SAN ON0FRE--UNIT 3 8 3.8-19 Amendment No. 116
.. 1 DRAFT NPF-10/15-477 l
l l
ATTACHMENT "C" (Proposed Specifications)
Unit 2 AC SOURCES OPERATING 3.8.1 SURVEILLANCE FREQUENCY SR 3.8.1.9 -------------------NOTE-------------------
Credit may be taken for unplanned events that satisfy this SR.
Verify cacii LG, icn operoiiny willi desivu
".>is iW ivodius oud .ai... iVAR Ivading u 24 months y.r. i ii.d J.r i,,, i >iinu,..jects . iv.d
, est aw, ...d.
Ver1lfHeiiiilf[0Gjrejedis[a[Isidlibrest<isan 06?e@al. Mali t%a s s;6hi a;t;id [$ijgliIlspge$t; postiaWidept9si62##dj
- a. Following load rejection, the frequency is s 66.75 Hz;
- b. Within 4 seconds following load rejection, the voltage is 2 Sitt
$291Yands*f96(576V;and
- c. Within 4 seconds following load rejection, the frequency is a $878 59]fHzands61.2Hz.
i SAN ON0FRE--UNIT 2 3.8-7 Amendment No. 127 ;
. l 1
l AC Sources Operating B 3.8.1 l 1
l 3.8.1.9 SR Each DG is provided with an engine overspeed trip to prevent damage to the engine. Recovery from the transient caused by the loss of a large l load could cause diesel engine overspeed, which, if excessive, might result in a trip of the engine. This Surveillance demonstrates the DG load response characteristics and capability to reject the largest ingle jiditis((@dlii load without exceeding predetermir;ed voltage and frequency and while maintaining a specified margin to the overspeed ,
irip. For this unit, the ]A}sesi single 56jl?id6Ehi load for each DG I is the Auxiliary feedwater pump and its hursepuwci iating is W@h3As3 l EsmiklatWsltiEE6lf800HP. As required by IEEE-308 (Ref.13), the load I rejection test is acceptable if the inu cose in dic3ci speed DG ffdusliidj does nct axceedEQ75(HM$hMI@s75%ofthedifference between synchronous speed (60ji;Hz) and the overspeed trip setpoint {69[NE);vi 15^, abvv e syntin vovus speed, whichetc. is ivwer. The time, voltage, and frequency tolerances specified in this SR are , derived from Regulatory Guide 1.9 (Ref. 3) recommendations for response ! during load acquence inicivais shqhin c t hglalsd {ll bail @5j elc fidd . The l 4 seconds specified is equal to 80% of a iypical the 5 second load sequence interval associated with sequencing of the largest load. sih@ SONGSI5pesi fi cTianslys'ss (dshi6hs t ratiithi{ shieplibil i tW0f]dVehl apping 1 bidirdusN 1M adj s centil oad h g roup shhitis is Ft LstTt he) s anie ftimsidii.E
'tol16adlseduendelfiineMt'ol erance)hthsiusO 6fj 80$ 6f sibadTsequence
} 6t efvallfdrydi tagspecoysryii sico'ns @nswi t Ohl6hsgiii remknYssf REsula!6fyJGujdRM9f{Refd3)} The voltage and frequency specified are consistent with the design range of the equipment powered by the DG.
SR 3.8.1.9.a corresponds to the maximum frequency excursion, while SR 3.8.1.9.b and SR 3.8.1.9.c are steady state voltage and frequency values to which the system must recover following load rejection. The 24 month Frequency is consistent with the recommendation of Regulatory Guide 1.9 (Ref. 3). In order to ensure that the DG is tested under load conditions that are as close to design basis conditions as possible, testing is performed using design La3is kW ivading and nio^huuni kVAR ivoding peinis ited dui ing icatinw. These ivodinus icpieseni ihe inductivr 1J5 ding ihai ihe DG woutd capeiience iv ihe c^ieni piaciitable and i> S isjssfingiah iddJdlflVill oid Niih3WJind[ kVARfdrssfir f than16ME$:il[tolthe31 ndi s l a rge s tOpo s tfacci d entj l oidf(6831 kW M3691 kVAR) . ; L Th es e s t ss t { con ld i t i ons SAN ON0FRE--UNIT 2 B 3.8-17 Amendment No. 127
i AC Sources Operating B 3.8.1 o:w v > , n l ,1 mi i ower ~..ivn? hws:.y?~7.:d.g;;
< ctor#
w....in e.ys.w.y<.v frenn>xw.v.
... .m r....e....qu.m
.;._s.
.. m.m of Reg '
a.r.e.. consi s tent wi thj j;,,the . he,_en endatjonslofsJnfon nation1e.n.t/.x Guide 1.9 (Ref. y
- 3) .andj.; reconn...
... s
.. m -
,7N_oti.
m ce.i .ul@a. J3 .to.ry , l E
$$51EIN- !
1
- This SR is modified by a hote which acknowledges that credit may be i i taken for unplanned events that satisfy this SR.
4 m s i. i 4 ?
! 5 f
i d .i ,i i .i d I! 4 i i 4 4 i i SAN ONOFRE--UNIT 2 B 3.8-17 Amendment No. 127 J a
1 l NPF-10/15-477 l i l l ATTACHMENT "D" (Proposed Specifications) Unit 3 , l
1 l s AC SOURCES OPERATING i 3.8.1 s SURVEILLANCE FREQUENCY l i
- SR 3.8.1.9 -------------------NOTE-------------------
Credit may be taken for unplanned events that satisfy this SR. 1 i i Veisiiwasii LG, -l.cn vyci isus wiil dwaivu Lassa kW iv ding .nd maxi-- kVAR Iv ding 24 months i per-liied during icaiiny, rej e c i. = . ived
- c sa L,:, ...d.
i ViFif feEMOG%jisWaMoaF#eiteEfthaii ' l bdh.;k..y$b.;'ifi$IO.-l'- s *- . ' tN. Asschi..:$NM'W--'.' il$ g1.h?Nhh6i[
-E' ' k-i p.o. .sti. a'c. 'c' i.'.de' s-.'. h' t.i. l.d'a.d,.Rarid.g l 1
- a. Following load rejection, the frequency is s 66.75 Hz;
- b. Within 4 seconds following load j j rejection, the voltage is 2 3924 '
$297Yands4796457.6V;and
) c. Within 4 seconds following load
- rejection, the frequency is 2 98-8 1
59}7Hzands61.2Hz. 1 1 4 SAN ON0FRE--UNIT 3 3.8-7 Amendment No. 116
e AC Sources Operating B 3.8.1 SR 3.8.1.9 Each DG is provided with an engine overspeed trip to prevent damage to the engine. Recovery from the transient caused by the loss of a large load could cause diesel engine overspeed, which, if excessive, might result in a trip of the engine. This Surveillance demonstrates the DG load response characteristics and capability to reject the largest single 56hEARQij{ load without exceeding predetermined voltage and frequency and while maintaining a specified margin to the overspeed trip. For this unit, the R$isj single %]lijj@@] load for each DG is the Auxiliary Feedwater pump and 6s hv1 = cpu.c. i a u ns > > E pi W @ l @jlil @ij{R 800 HP. AsrequiredbyIEEE-308(Ref.13(RMilli tiiEIoa'd rejection test is acceptable if the increase in dicsci seccd .D$ R $iid[y does not exceed 56i $[Hi) and the overspeed trip setpoint betweensynchronousspeed{60 16Qilvi liA ahuvc sinuhivuuus speed, whn.hevci is l vwei . The time, voltage, and frequency tolerances specified in this SR are derived from Regulatory Guide 1.9 (Ref. 3) recommendations for response , during load scyucnue inici v ai s [sdiiE5@iliEdil6idRilER@ii. The . 1 4 seconds specified is equal to 80% of a iypu.ai th$5secondload ) sequence interval y<associan.y:,my.>w.ys.ith
- ~.e ,v .
~yp.;.w .~yg ted ~wyg.. y::.
sequencing of the largest p ,y load. m:.y, m.my.y Si ' - - ' " SONGg,s: sgeciWafi..,my.wmp, idjacent116idfgroupsith 9 mu .rwi- - ga ysygponstpte3 h a$cypta t . w.:~:n,.@:j. y,yyt~.sy.r...w.x yr
- .lj>.m.$.ps;. ing Ibidig i6$. ..,d, ail $e. s. ..e.~
~
roups
- pf:p w 7p -3 m
!(hd,eyh.,.issn[filifa,ncA)i.
.. _ . . . _ . , . . ~
interv,l forivol#+:v.tage,lrecov erygisi" cons i s t en t ["w a .v 4/ m.z = .~ fA
*^^
64~.3_ Si$_eh.ns.,nds,_~
"^ ^-
..n~t ,
i
.>yv );.:.x d-'e.h B ; ;;"% n:s:.
gnalpmGuN-: 'e; MMR.s^~-:s effi3 'The"'v"o"'l"*ta"g"e"' a"nd f'"r""q"uency e s"~p'"e"c""i i f"ed"^'are consistent with the design range of the equipment powered by the DG. SR 3.8.1.9.a corresponds to the maximum frequency excursion, while SR 3.8.1.9.b and SR 3.8.1.9.c are steady state voltage and frequency values to which the system must recover following load rejection. The 24 month Frequency is consistent with the recommendation of Regulatory Guide 1.9 (Ref. 3). In order to ensure that the DG is tested under load conditions that are as close to design basis conditions as possible, testing is performed usins design hosia kw ivading and maximum kVAR ivading pcimilied duiiny oc36inv. These ivadin32 s cpi cacti 6 the induu u ve ivodins 6ha6 6he DG wouW cape,icnue ou the cu eno viacoit.ahic anu is by reje'cting an tidiiEtWi'1'oid~with~kW'"a'nd*kVAR jisat'sr"th~a'n orlehual to the singls largest _ post-accident load (6831kW. 369 kVAR), These, test conditions SAN ON0FRE--UNIT 3 B 3.8-17 Amendment No. 116 f i
. _ - . _ . . . . _ _ _ . _ . _-.. _ _ . ~ _ -_ _ _ _.. _ _ _ .._._ ._ ._. __ .. . . . . _ _ _ _ _
3 \ l 1
. . 1 9
0 AC Sources Operating 4 B 3.8.1 , svu w y.xm 5.// . y , are consi stent wi th the i nieni powerefi.,n.-. . wvpp-wnume w.+ aortrequirements;
- -r,qmn . of Regulatory Guide 1.9 (Ref. 3) 533].ER$53reiNdl}}6h$$flI$f}NN[d5}jjl}dllEin
! }N!!!$IN-This SR is modified by a Note which acknowledges that credit may be
! taken for unplanned events that satisfy this SR. I I .i A 1 4 4 i i 1 1 f l 1 j 1 i i 1 i i
- l 3 l l
4 4 i ! i J i r d SAN ON0FRE--UNIT 3 8 3.8-17 Amendment No. 116
-. - -}}