ML20148A367
| ML20148A367 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 05/01/1997 |
| From: | NORTHEAST NUCLEAR ENERGY CO. |
| To: | |
| Shared Package | |
| ML20148A363 | List: |
| References | |
| NUDOCS 9705080189 | |
| Download: ML20148A367 (15) | |
Text
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PTsc R 3-j o _9 f, ELECTRICAL POWER SYSTEMS April 12,1995
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D. C. SOURCES
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LIMITING CONDITION FOR'0PERATION
, one 5-volt /attery nk and-s assoc ed fu 3.8.2.2 faginim.
(captitychjfger' 11.
OPERAB}E APPLICABILITY: MODES 5 and 6.
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/[With the requiped[batferytfa.nkafj{flohanditv4ap"r(flinoperable,__.
1stediately suspend all operations involving' CORE ALTERA IONS, positive reactivity changes, movement of irradiated fuel; crane' operation with loads
- over the fuel storage pool, or operation'with a potential for_draininq _the reactor vessel; initiate corrective action to restore the requir.idf h
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[bahg and full-tapac14y chgrg'a.r to OPERABLE status as soon as possible.
N SURVEILLANCE REOUIREMENTS
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4.B.2.2 The above required 125-volkbatterhbank andNfu11-capacithchardh2 shall be demonstrated OPERAELEgin accordance with Specification 4.8.2.1.
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MILLSTONE - UNIT 3 3/4 8-15.
Amendment No. #, #f,108
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PTSCR-3-10-96 INSERT-A 3.8.2.2 As a minimum, one Train (A or B) of batteries and their associated full.
. capacity chargers shall be Operable:
- a. Train _ "A" consisting of:
- 1) Battery Bank 301 A-1 and a full capacity battery charger, and
- 2) Battery Bank 301 A-2 and a full capacity battery charger.
i OR
- b. Train "B" consisting of:
- 1) Battery Bank 3018-1 and a full capacity bs'tery charger, and i
- 2) Battery Bank 301B-2 and a full capacity battery charger.
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April 1C ELECTRICAL POWE'R' SYSTEMS ONSITE POWER DISTRIBUTION.
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LIMITING CONDITION FOR OPERATION 3.8.3.2!Asa
- inimum, e following ectrical b des shall b energized i the ecifie manner.
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ne train f A.C. emer ncy busses nsisting o one 4160-vo and four 48 olt A.C. e gency busse.
4 Two
-volt A.C.
tal busses er'gized'fr their asso hted inv ters connec d to their r spective D.. busses, a
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o 125-volt
.C. busses e rgized fro their assoc ted battery anks.
APPLICABII.ITY':
H0 DES 5 and 6.
N S E R.T - B ACTION:
With any of the above required electrical busses not energized in the required 4
manner, immediately suspend all operations involving CORE ALTERATIONS, I
positive reactivity changes, movement of irradiated fuel, crane operation with loads over the fuel storage pool, or operations with a potential for draining the reactor vessel, initiate corrective action to energize the required
' electrical busses in the'specified manner as soon as possible.
SURVEILLANCE REOUIREMENTS-J 4.8.3.2 The specified busses shall be determined energized in the required manner at least once pe" 7 days by verifying correct breaker alignment and indicated voltage on the busses.
$h MILLSTONE - UNIT 3
- 3/4 8-18 Amendment No. JJ, JJ,108 eine ogof
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e PTSCR-3-10-96 LNSERT-B 3.8.3.2 As a minimum, one Train (A or B) of the following electrical busses shall j
be Operable:
- a. Train "A" consisting of:
- 1) One 4160 volt AC Emergency Bus #34C, and j
- 2) Four 480 volt AC Emergency Busses #32R, #32S, #32T, #32Y, and
- 3) Two 120 volt AC Vital Busses consisting of:
a) Bus # VIAC-1 energized from Inverter # INV-1 connected to DC Bus # 301 A-1, and i
b) Bus # VIAC-3 energized from Inverter # INV-3 connected to DC Bus # 301 A-2, and
- 4) Two 125 volt DC Busses consisting of:
i a) Bus #301 A-1 energized from Battery Bank # 301 A-1, and l
b) Bus #301 A-2 energized from Battery Bank # 301 A-2.
OR b Train "B" consisting of:
- 1) One 4160 volt AC Emergency Bus # 34D, and
- 2) Four 480 volt AC Emergency Busses #32U, #32V, #32W, #32X, and
- 3) Two 120 volt AC Vital Busses consisting of:
a) Bus #VIAC-2 energized from Inverter # INV-2 connected to DC Bus #301B-1, and
. b) Bus #VIAC-4 energized from Inverter # INV-4 connected to DC Bus #301B-2, and i
- 4) Two 125 volt DC Busses consisting of:
3/13/97 11:29 AM i
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PTSCR-3-10-96 INSERT - B CONTINUED a) Bus # 3018-1 energized from Battery Bank #301B-1, and b) Bus # 301B 2 energized from Battery ank #301B-2.
INSERT - C Train INSERT -D Train INSERT -E Train 3/13/97 11:40 AM
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Docket No. 50-423 J
B16423 4
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Millstone Nuclear Power Station Unit No. 3 i
Proposed Revision to Technical Specification i
Electrical Power Systems PTSCR 3-10-96 i
Retvoed Paaes t
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May 1997
U.S. Nuclear Regulatory Commission B16423%ttachment 3\\Page 1 RETYPE OF PROPOSED REVISION Refer to the attached retype of the proposed revision to the Technical Specifications.
The attached retype reflects the currently issued version of the Technical Specifications. Pending Technical Specification revisions or Technical Specification revisions issued subsequent to this submittal are not reflected in the enclosed retype.
The enclosed retype should be checked for continuity with Technical Specifications prior to issuance.
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ELECTRICAL POWER SYSTEMS D. C. SOURCES SillTD0lBI LIMITING C051 TION FOR OPERATION 3.8.2.2 As a minimum, one train (A or B) of batteries and their associated full capacity chargers shall be OPERABLE:
a.
Train "A" consisting of:
1)
Battery Bank 301A-1 and a full capacity battery charger, and 2)
Battery Bank 301A-2 and a full capacity battery charger.
OR b.
Train "B" consisting of:
}
1)
Battery Bank 3018-1 and a full capacity battery charger, and i
2)
Battery Bank 3018-2 and a full capacity battery charger.
APPLICABILITY: MODES 5 and 6.
ACTION:
With the required train inoperable, immediately suspend all operations l
involving CORE ALTERATIONS, positive reactivity changes, movement of irradiated fuel; crane operation with loads over the fuel storage pool, or operation with a potential for draining the reactor vessel; initiate corrective action to restore the required train to OPERABLE status as soon as l
possible.
SURVEILLANCE REQUIREMENTS 4.8.2.2 The above required train shall be demonstrated OPERABLE in accordance with Specification 4.8.2.1.
I MILLSTONE - LalIT 3 3/4 8-15 Amendment No. Jp, $$, Jpp, osco
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ELECTRICAL POWER SYSTEMS ONSITE POWER DISTRIBUTION SMITD0tAl LIMITING COMITION FOR OPERATION j
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3.8.3.2 As a minimum, one train (A or B) of the following electrical busses shall be OPERABLE:
a.
Train "A" consisting of:
i 1)
One 4160 volt AC Emergency Bus #34C, and 2)
Four 480 volt AC Emergency Busses #32R, #325, #32T, #32Y, and i
3)
Two 120 volt AC Vital Busses consisting of:
a)
Bus #VIAC-1 energized from Inverter #INV-1 connected to DC Bus #301A-1, and b)
Bus #VIAC-3 energized from Inverter #INV-3 connected to DC Bus #301A-2, and i
4)
Two 125 volt DC Busses consisting of:
a)
Bus #301A-1 energized from Battery Bank #301A-1, and
+
b)
Bus #301A-2 energized from Battery Bank #301A-2.
j OR b.
Train "B" consisting of I
1)
One 4160 volt AC Emergency Bus #34D, and 2)
Four 480 volt AC Emergency Busses #32U, #32V, #32W, #32X, and 3)
Two 120 volt AC Vital Busses consisting of:
l a)
Bus #VIAC-2 energized from Inverter #INV-2 connected to DC Bus #3018-1, and b)
Bus #VIAC-4 energized from Inverter #INV-4 connected to CC Bus #3018-2, and 4)
Two 125 volt DC Busses consisting of:
i 1)
Bus #3018-1 energized from Battery Bank #3018-1, and b)
Bus #3018-2 energized from Battery Bank #301B-2.
APPLICABILITY: MODES 5 and 6.
ACTION:
i With any of the above required electrical busses not energized in the required manner, immediately suspend all operations involving CORE ALTERATIONS, positive reactivity changes, movement of irradiated fuel, crane operation with loads over the fuel storage pool, or operations with a potential for draining the reactor vessel, initiate corrective action to energize the required
. electrical busses in the specified manner as soon as possible.
MILL 5 TONE - UNIT 3 3/4 8-18 Amendment No. JJ, JJ. JJJ, j
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ELECTRICAL POWER SYSTEMS ONSITE POWER DISTRIBUTION SHUTDOWN SURVEILLANCE REQUIRENENTS 4.8.3.2 The specified busses shall be determined energized in the required manner at least once per 7 days by verifying correct breaker alignment and indicated voltage on the busses.
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NILLSTONE - UNIT 3 3/4 8-18a Amendment No. JJ, JJ JJJ, osos
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Docket No. 50-423 B16423 h
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Millstone Nuclear Power Station Unit No. 3 Proposed Revision to Technical Specification Electrical Power Systems PTSCR 3-10-96 Backaround and Safety Assessment l
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U.S. Nuclear Regulatory Commission B16423\\ Attachment 4\\Page 1 J
Backaround
' The current Technical Specifications 3/4.8.2.2 and 3/4.8.3.2 are inconsistent as to the number of battery banks required operable and vague as to the specific electrical distnbution system equipment required operable in modes 5 and 6.
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Safety Assessment
]
1 The proposed change to Technical Specification 3/4.8.2.2 to replace the wording "As a j
minimum, one 125 voit battery bank and its associated full capacity charger" with
- As a minimum, one Train (A or B) of batteries and their associated full capacity chargers" will increase the requireo battery banks operable from one to two. This change is being proposed to resolve an inconsistency with Technical Specification 3/4.8.3.2 which currently requires two battery banks energized in modes 5 and 6. This proposed change does not alter the manner in which any system or component is operated during normal or accident conditions. The change will also provide a greater level of assurance that the battery banks will be correctly aligned and surveilled by correcting i
the inconsistency in the Technical Specifications. This proposed change is considered an administrative change.
The proposed change to reword Technical Specifications 3/4.8.2.2 and 3/4.8.3.2 to identify the specific equipment required and their alignment during modes 5 and 6 is i
being proposed to reduce the vagueness in the present Technical Specifications. The AC and DC systems provide the required motive, control and instrumentation power needed for each train of safety related equipment to perform its design basis functions.
This proposed change will specify the equipment required operable for the on-site AC and DC electrical distribution systems during modes 5 and 6. This proposed change does not alter the manner in which any system or component is operated during normal or accident conditions. Additionally, the change will provide a greater level of i
assurance that the on-site AC and DC electrical distribution systems will be correctly i
aligned and surveilled by reducing the vagueness in the Technical Specifications. This proposed change is also considered an administrative change.
Based on the preceding, these changes are considered administrative and only clarify the original intent of the Technical Specifications. NNECO has also determined that this proposed change does not involve an unreviewed safety question.
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Docket No 50-423 B16423 o
Millstone Nuclear Power Station Unit No. 3 Proposed Revision to Technical Specification Electrical Power Systems PTSCR 3-10-96 Sianificant Hazards Consideration and Environmental Consideration s
May 1997
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U.S. Nuclear Regulatory Commission l
B16423%ttachment 5\\Page 1 Sionificant Hazards Consideration i
NNECO has reviewed the proposed changes in accordance with 10CFR 50.92 and has concluded that the change does not involve a significant hazards consideration (SHC).
The bases for this conclusion is that the three criteria of 10CFR 50.92(c) are not satisfied. The proposed changes do not involve a SHC because the changes would i
not:
J 1
involve a significant increase in the probability or consequence of an accident previously evaluated.
The proposed change to Technical Specification 3/4.8.2.2 to replace the wording "As a minimum, one 125 voit battery bank and its associated full capacity charger" to " As a minimum, one Train (A or B) of batteries and their associated full capacity chargers" will increase the required battery banks operable from one to two. This change is being proposed to resolve an inconsistency with Technical Specification 3/4.8.3.2 which currently requires two battery banks i
energized in modes 5 and 6.
The proposed change to reworded Technical Specifications 3/4.8.2.2 and 3/4.8.3.2 to identify the specific equipment required and its alignment during modes 5 and 6 is being proposed to reduce the vagueness in the present Technical Specifications. This proposed change will specify the equipment required operable for the electrical distribution systems during modes 5 and 6.
6 l
These proposed changes are considered administrative and do not alter the manner in which any system or component is operated or expected to respond during an accident. Therefore, the proposed changes do not involve a significant increase in the probability or consequence of an accident previously evaluated.
2 Create the pccsibility of a new or different kind of accident from any accident previously evaluated.
The proposed changes to Technical Specification 3/4.8.2.2 to increase the required battery banks operable from one to two and to reword Technical Specifications 3/4.8.2.2 and 3/4.8.3.2 to identify the specific equipment required operable during modes 5 and 6 do not alter the manner in which any system or component is operated or expected to respond during normal or accident conditions.
Therefore, the proposed changes do not create the possibility of a new or different kind of accident from any accident previously evaluated.
i
U.S. Nuclear Regulatory Commission B16423%ttachment 5\\Page 2 3
involve a significant reduction in a margin of safety.
The proposed changes to Technical Specirmation 3/4.8.2.2 to increase the j
required battery banks operable from one to two is being proposed to resolve an j
inconsistency with Technical Specification 3/4.8.3.2 which currently requires two j
battery banks energized in modes 5 and 6. This is considered an administrative change.
The proposed changes to reworded Technical Specifications 3/4.8.2.2 and 3/4.8.3.2 are being proposed to reduce the vagueness in the present technical specifications by identifying the specife equipment required operable during modes 5 and 6. The change will provide a greater level of assurance that the electrical distribution systems will be correctly aligned and surveilled. This is also considered an administrative change.
Therefore, the proposed changes do not involve a significant reduction in a margin of safety.
4 In conclusion, based on the information provided, it is determined that the proposed j
changes do not involve an SHC.
Environmental Considerations j
NNECO has reviewed the proposed license amendment against the criteria of 10CFR j
51.22 for environmental considerations. The proposed changes do not involve a SHC, do not significantly increase the type and amounts of effluents that may be released off i
site, nor significantly increase individual or cumulative occupational radiation exposures. Eased on the foregoing, NNECO concludes that the proposed changes meet the criteria delineated in 10CFR 51.22(c)(9) for categorical exclusion from the requirements of an environmentalimpact statement j-1 i,
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.