ML20028D883
| ML20028D883 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 01/12/1983 |
| From: | NORTHEAST UTILITIES |
| To: | |
| Shared Package | |
| ML20028D881 | List: |
| References | |
| NUDOCS 8301200061 | |
| Download: ML20028D883 (9) | |
Text
- _
1 Docket No. 50-245 ATTACHMENT MILLSTONE NUCLEAR POWER STATION, UNIT NO.1 AMENDMENT TO PROPOSED TECHNICAL SPECIFICATION CHANGES FOR STATION ELECTRIC DISTRIBUTION SYSTEM VOLTAGES i
l I
l i
j JANUARY,1983 l
8801200 OGl P
~
n s
m y
s e
u e
c e
c l
r a
n c
r o
ru m
e r
r u
c osk r
g d
r u
e o
t t sc i
r n
e o
w s
t s
ceo f
f e
a w
s o
s u
arl o
n m
o p
r r
m epr om e
y p
r e
r e
n ce a
e i
y w
f t
l t o
t f
r y
w gs o
p c
o c
o e
wl n i
n p
e s
oei t
ny s
n p
e h
w a
i s
e e
l a
g y
t s r
yp r
d s
e g
y s
wrm e
ng o
r r
c r
c n
eg e
s n
f o h n k
od u p
en l
o e
s n
p o
pi cs c
m e
e m
e e
I i ti r
l a
h l
- e e
s g
e s
g t
i v m
h gg t
no os t
u r
u r
ea i
f b
e.
e ti n n.
oo t u r
f b
e.
.d e
i c ub a
o ms o
ms d n nl R
ihi ey l
t a t
a t
m ee m
ee e o i
w S
d o rr ae n
s t
o s
t o
s pc M
nno ep ur ro r
r ru r
r ru p
sd E
oac vs t o o
o a
f ob a
f ob id l e T
i d
cc f e t
t f
t f
rl es S
tl e at a
c s
s n
s s
n t o ns Y
cer nn P.
er es d
eo d
eo c
na S
nvo i e RL n vu vp s
a v
s a
v e
ap o
ie e.
o uec m
P o
io i
m e.
i e h o h y G
jl t n Afi ss su t s l
ss t s l
ss t
cb N
n P
ni ot s
sp ae so ae so y
I orL ea r
a ir i
ic p
il i c p
i l an oe L
ce vt enr me mC mc t r i mc mw wb I
t r i O
td en f oe w
i u r
r i u r
r o
t O
nan r
ef p eo eP no t
eo no t
eo md wa P c Dt o Pp PL I s S
Pt I s S
Pt et f s C
I t u oe E
sh m
R ys ti O
1 1
1 1
2 1
2 3
1 2
3 s
ut C
)
y o
)
t l
t Y
6 ar oa C
h e w
N
.1
)
E y7 e%v y9 td T,
r( m0k r9 e r
y G
)
)
R g
6 a
i5 a( m
,o 4
.a d vT 5
d i
s m
e.
d E
n nyT mn s
2 d
nk t4 e
M oK e a yl i
u E
t t sn o
.a3 1
c t
ae 4
n t
g l ya c6
(
e i
E e
g oa e4d.
5 se l n
/
t I
S d.
yt en 3
i Vl 5 S2rce 4
s t
H S
l i
g P aeg
)1 rc sa ra n
T s
e oysa v
ae i
h l
)
o l
P 0rs oys pt ec
(
L v
d le S 1th t
C S
e s
2 e
- 5. t h ii g
c 0.l c0 rn ae lY 0
1 es 1
1 st o
O e
n 1
gu
( st ti t n.
e R
l o
1 raB (di6v 2
rC ot nw di1 l Og T
c o"<
1 fl r sossd snw ey o
n 2
N p
e t oss hl v
i i
s Ch oo t p i e O
l p i
t e
.s se t
3 C
r P
l vt l
ose t
dl n T
0 3
ari o eh ya
{<
1 men Vrtar Veh y f a eae E
D 2
rt a oi d ns 7 h.
rd o r
l L
N 1
5r l
d ag 0
onM 2onef B
A 1 one ee rie A
3 4 9
Nu(
8Cido 1Cid nm gsg T
S E
om e
a i
d et T
r gl A
o,
f ao I
r f s ot v T
n g
e m
l I
w n
n w
t e sod N
o v
i o
o et t ve I
n d
e' l
P e
ms t:
d o
w r
o es g
hn y
sda T
i o
p ok l e l
a t o e s er A
t l
S Cc bs a
t ii b
td g H
c B
o au m
wt p
nae l
T n
t el l B r
o a
ti ard u
o n
rr i
o V
ti or d g N
F t
ek oe ay N
)
) nt nt ner O
u mc C t vc j
I p
A no n
An f
d2ei n
ud o e
d n ah d
f T
i il PI e
o 1, dl ii ct ea A
r r
ar L
rg aec o
r c
T T
e t e p
er s y rvnS nb ei N
m nt R m we s e geiC m
st g E
i on P u om oL eL oC ur eao M
U D(CE l o si l R
of ut T
c ie t
enn S
t e mio N
s 1 1 sm e
- W I
l r
h of e) n l T i e ct o n1 r3 e5.
fb s
n(
ol v5 c et f a fi enc et l t u 3 oh m L,h v ho aao 7 t
i Ce 2
7 s t n mr -
r t
o, 2t r
)
n ree e
.s f
f ie f a opn e bt y o) o I
f ws 2
l u
(
I c N oo f
isS l
r o
1 un 1
2 2
sa se sf NI p tt t kc t yo
)
)
i eo eei ua 1
2 oRTRo uer sT srg nl t s
(
(
nlT eu
(
e b
2 2hl O
f i ar e
nre n
i eP A
MpO
TABLE 4.2.1 MINIMUM TEST AND CALIBRATION FREQUENCY FOR CORE COOLING INSTRUMENTATION ROD BLOCKS AND ISOLATIONS Instrument Channel Instrument Functional Test (2)
Calibration (2)
Instrument Check (2)
ECCS Instrumentation 1.
Reactor Low-Low Water Level (1)
Once/3 Months 2.
Drywell High Pressure (1)
Once/3 Months 3.
Reactor Low Pressure (Pump Start)
(1)
Once/3 Months 4.
Reactor Low Pressure (Valve Permissive)
(1)
Once/3 Months 5.
APR LP Core Cooling Pump Interlock (1)
Once/3 Months 6.
Containment Spray Interlock (1)
Once/3 Months 7.
Loss of Normal Power Relays Refueling Outage Refueling Outage 8.
Power Available Relays (1) (5)
None 9.
Reactor High Pressure Once/3 Months
- 10. Degraded Voltage Refueling Outage Refueling Outage l
Rod Blocks 1.
APRM Downscale (1) (3)
Once/3 Months (1) 2.
APRM Flow Variable (1) (3)
Once/3 Months (1)-
3.
IRM Upscale (6)
(6)
(6) 4.
IRM Downscale (6)
(6)
(6) 5.
RBM Upscale (1) (3)
Once/3 Months (1) 6.
RBM Downscale (1) (3)
Once/3 Months (1) 7.
SRM Upscale (6)
(6)
(6) 8.
SRM Detector not in Startup Position (6)
(6)
(6) 9.
Scram Discharge Volume-Water Level High Quarterly Refueling Outage
- 10. Scram Discharge Volume -
Scram Trip Bypassed Quarterly None Main Steam Line Isolation 1.
Steam Tunnel High Temperature Refueling Outage Refueling Outage l
2.
Steam Line High Flow (1)
Once/3 Months Once/ Day 3.
Steam Line Low Pressure (1)
Once/3 Months None 4.
Steam Line High Radiation (1) (3)
Once/3 Months (4)
Once/ Day Amendment No. #,6/, //, $6 3/42-6
~
LIMITING CONDITION F0P OPERATION l
SURVEILLAf4CE REQUIREftENT i
3.9 AUXILIARY ELEURICAL SYSTEf1 4.9 AUXILIARY ELECTRICAL SYSTEfi Applica bil i ty:
i Appl ica bil ity:
Applies to the auxiliary electrical power system.
Applies to the periodic testing requirements of the auxiliary electrical system.
Objective:
Objective:
To assure an adequate supply of electrical power l
during plant operation.
?
Verify the operability of the auxiliary electrical system.
Specification:
Specification:
A.
The reactor shall not be made critical unless all of the following conditions are satisfied:
i A.
Emergency Power Sources i
1.
One 345 kv line, associated switchgear, and 1.
Diesel Generator auxiliary startup transformer capable of automatically supplying auxiliary power.
a.
The diesel generator shall be started and loaded once a month to demonstrate 2.
Both emergency power sources are operable.
operational readiness.
The test shall continue until the diesel engine and 3.
An artlitional source of power consisting of the generator are at equilibrium one of the following:
temperature at full load output.
During this test, the diesel starting l
,a.
The 23 kv line, associated switch-air compressor will be checked for gear, shutdown transformer to supply operation and its ability to re-power to the emergency 4160 volt buses.
charge air receivers.
b.
One 345 kv line fully operational and b.
During each refueling outage, the capable of carrying auxiliary power conditions under which the diesel to the emergency buses.
generator is required will be simu-lated and test conducted to demon-4 a.
4160 volt buses five and six are strate that it will start and be l
energized (> 3646 volts) and the ready to accept load within 13 associated 480 volt buses are s eco nds.
This test will demonstrate energized.
the sequence of Class IE bus de-energization, load shedding, voltage j
restora tion, and load sequencing, i
Additionally, the degraded voltage /
loss-of-normal power trip system 3/4 9-1 will be demonstrated.
I l
I
LIrilTING CONDITION FOR OPERATION SURVEILLANCE REQUIREMENT 5.
All. station and switchyard 24 and 125 volt l
c.
During the monthly generator test, batteries and associated battery chargers I
the diesel fuel oil transfer pumps are operable, j
shall be operated.
B.
When the mode switch is in Run, the availability 2.
Gas Turbine Generator of power shall be as specified in 3.9.A, except as specified below:
l a.
The gas turbine generator shall be fast started and the output breakers
~
1.
From and af ter the date that incoming power closed within 48 seconds once a tronth is available from only one 345 kv line, to demonstrate operatior.al readiness.
reactor operation is permissible only during The test shall continue until the the succeeding seven days unless an addi-gas turbine and generator are at tional 345 kv line is sooner placed in I
equilibrium temperature at full load service.
l output. Use of this un61t to supply power to the system electrical net-2.
From and af ter the date that incoming power work shall constitute an acceptable is not available from any 345 kv line, demonstration of operability.
reactor operation shall be pennitted pro-vided both emergency power sources are b.
During each refueling outage, the opt rating and the isolation condenser system conditions under which the gas turbine-is operable. The NRC shall be notified, generator is required will be simulated within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of the precautions to be and a test conducted to verify that it talen during this situation and the plans will start and be able to accept for restoration of incoming power. The emergency loads within 48 seconds, minimum fuel supply for the gas turbine This test will demonstrate the sequence during this situation shall be maintained of Class IE bus de-energization, load
- above 20,000 gallons.
shedding, voltage restoration, and load sequencing. Additionally, the 3.
From and after the date that either emer-degraded vol tage/ loss-of-normal puwer gency power source or its associated bus is trip system will be demonstrated.
made or found to be inoperable for any reason, reactor operation is permitsible B.
Batteries according to Specification 3.5.F/4.5F unless such emergency power source and its bus 1.
Station Batteries are sooner made operable, provided that during such time two offsite lines (345 a.
Every week, the specific gravity and l
or 23 kv) are operable.
voltage of the pilot cell and tempera-ture of adjacent cells and overall battery voltage shall be measured.
Amendment No. J/, 31 M 3/4 9-2
LIMITING CONDITION FOR OPERATION l
SURVEILLANCE REQUIREMENT
~
l b.
Every three months, the measure-ments shall be made of voltage l
of each cell to nearest 0.01 volt, specific gravity of each cell and temperature of every fifth cell.
l i
I I
i i
' :.s d,
d 4
5 8
3/4.9-2a t
v e
rm LIMI' TING CONDITION FOR OPERATION SHRVEILLANEE R[QUIREM(NT 4
From and after the date that one of the c.
At every refueling outage or' at two 125 volt or 24 volt battery systems is 18 months intervals, the st<stion made or found to be inoperable for any batteries snall be subjected to a reason reactor operation is permissible performance test in accordance with only during the succeeding seven days the procedures described in Section j
i unless such battery systen is sooner made 5.4 in IEEE Standard 450-1912
]
"IEEE Recommended Practice for l
Maintenance Testing, and Replat e -
j C.
Diesel and Gas Turbine Fuel ment of Large Stationary Type Pnwer Plant and Substation Lead Storage There shall be a minimum of 20,000 gallons of Batteries".
1 diesel fuel supply onsite for the diesel and a minimum of 35.000 gallons onsite for the gas 2.
Switchyard Batteries 3
turbine, except as perinitted in Specification 3.9.B.2 a.
Every week the specific gravity and voltage of the pilot cell and temperature of adjacent cells and overall battery voltage shall be measured.
b.
Every three months the measurements shall be made of voltage of each cell to nearest 0.01 volt, specific gravity of each cell, and temperature of every fif th cell.
C.
The quantity of gas turbine genera tor and diesel generator fuel shall be logged weekly and af ter each operation of the unit.
k Once a month a sample of the diesel' and gas j "E turbine fuel shall be taken from the under-l ground storage tanks and checked for quality D.
During each refueling outage the setpoint of each of the degraded voltage sensors shall be verified.
The setpoint shall correspond p
to an offsite source voltage of 345 kv.
.s h
Amendment No. //
3/49-3
(
3.9 D,ne s :
A.
The ob ertive nf the annillary electric pnwer availability specific.ilinn is to assure that adequate power t
will be available in operate the emergency safeguards equipnent.
Adeepsate power can be provided by any o.ie of the fullowing pnwer sources; one 345 kv line, the 23 kv system, the gas turbine-generator l
and the diesel generator.
This specification assures that at least two offsite and two onsite power sources will be aval}able before the reactor is started up.
In adelitinn to assuring power source nperability, all cf the associated switch-qear and vital equipment must be operable as specified to assure that the emergency cooling equipment can be operated, if required, from the power sources. Operating with less than 3646 volts on the 4160-volt electrical system may endanger equipments or systems at the 480-volt level.
4160-vol t equi pnent is 3620 volts.
The limiting voltage for thnmally, three 345 kv lines will be available to provide energency power to the piant when the reactor is B.
opera t ing.
e 16; wever, adequate luwer is available with only one 345 kv line in service.
Therefore, reactor operation is permitted for up to seven days with only one 345 kv line in service to acconmodate qecessary ma intenance, etc.
In the event that all 345 kv lines are out of service, continued reactor operation is permitted provide'd both onsite emergency power sources are operating with an adequate fuel supply. Two opera tional pcwer snurces provide an adequate assurance of energency power availability under these circumstances.
In addition, the isolation condenser systen is required to be operable as a standby heat removal system.
Normally both the gas turbina-generator and diesel generator are required to be operable to assure adequate emergency power with no offsite power sources. Ilowever, due to the redundancy and reliability of offsite pnwer, one of the two emergency onsite power sources may be out of service for limited periods of time pro-viding two offsite power sources are available during these periuds.
C.
tither of the two station batterles has enough capability to energize the vital buses and power the other emergency equipment. Due to the high reliability nf battery systems, one of the two batteries may be out of service for up to 7 days. This minimizes the probability of unwarranted shutdowns by providing adequate time for reasonable repairs.
D.
The diesel fuel supply of 20,000 gallons will supply the diesel generator with about five days of full load operation.
The gas turbine generator fuel supply of 35,000 gallons is sufficient to operate the unit for at least two and one-half days considering the fuel consumption vs. load and load vs. time requirenents during the postulated accident. Reference Amendment 111. Additional fuel can be supplied to the site within twelve hours.
Amendment No. Jg D 3/4 9-1
]
4.9 Bases
.b A.
The monthly test of the diesel generator and gas turbine generator is conducted to check for equipment failures and deterioration.
Testing is conducted up to equilibrium operating conditions to demonstrate proper operation at these conditions.
Operation of the gas turbine generator for peaking purposes may substitute for the monthly performance check.
The units will be manually started, synchronized to the bus and load picked up.
Generator experience at other generating stations indicates that the testing frequency is adequate to assure a high reliability of operation should the system be required.
In additiun, I
during the test when the generator is synchronized to the bus, it is also synchronized to the of f-site power source and thus, not completely independent of this source.
To maintain the maximum amount of independence, a thirty-day testing interval is also desirable.
Both the diesel generator and the gas turbine generator have air compressors and air receiver tanks for starting.
It is expected that the air compressors will run only infrequently.
During the monthly check of the units, the receivers will be drawn down below the point at which the compressor automatically starts to check operation and the ability of the compressors to recharge the receivers.
Pressure indicators are provided on each of the receivers.
Following the tests or peaking operation of the units and at least weekly, the fuel volume remaining will be checked.
At the end of the monthly load test of the diesel generator, the fuel oil transfer pump will be operated to refill the day tank and to check the operation of this pump.
Peaking operation shall be controlled so that major maintenance operations on the gas turbine will not be scheduled during an operating cycle.
The test of the diesel and gas turbine generators during the refueling outage will be more comprehensive in that it will functionally test the system; i.e., it will check starting and closure of breakers and sequencing of loads.
The units will be started by simulation of a loss of coolant accident.
In addition, a loss of normal power condition will be imposed to simulate a loss of off-site power.
Operation of the degraded voltage / loss-of-normal power scheme will be checked.
The timing sequence will be checked to assure proper loading in the time required.
Periodic tests between refueling outages check the capability of the units to run at full load.
Periodic testing of the various components plus a functional test at a refueling interval are sufficient to maintain adequate reliability.
B.
Although the station and switchyard batteries will gradually deteriorate with time, the surveillance specified is that which will provide an indication of all degradation long before the battery would have insufficient capacity to meet the design load which could be placed upon it.
Ba ttery cell replaccments will be made in accordance with Section 6 of 7J.EE Standard 450-1972, " Battery Replacement Criteria".
C.
Logging the diesel and gas turbine generator fuel supply weekly and after each operation assures that the minimum fuel supply requirements will be maintained.
D.
Verifying the degraded voltage setpoint will assure that the preferred offsite power supply (RSST) is tripped, under accident conditions, at that value of degraded voltage where safeguards actions can no longer be assured due to low offsite voltage, d
B 3/4 9-2
.