ML20140D860

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Proposed Tech Specs,Revising Section 3.8.2.1 to Eliminate Inconsistency Between Requirements for ECCS Operability & auto-start & Trip Bypass of of EDGs on ECCS Initiation Signal During Listed Events in Application
ML20140D860
Person / Time
Site: Peach Bottom  Constellation icon.png
Issue date: 06/04/1997
From:
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
Shared Package
ML20140D856 List:
References
NUDOCS 9706110108
Download: ML20140D860 (4)


Text

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AC Sources-Shutdown i

3.8.2

~

SURVEIll.ANCE REOUIREMENTS SURVEILLANCE FREQUENCY SR 3.8.2.1


NOTE--------------------

The following SRs are not required to be performed: SR 3.8.1.3, SR 3.8.1.9 through SR 3.8.1.11, SR 3.8.1.13 through SR 3.R.1.16, SR 3.8.1.18, and SR 3.8.1.19.

i For required Unit 2 AC sources the SRs of In accordance i

t Specification 3.8.1, except SR 3.8.1.8, with applicable SR 3.8.1.17, and SR 3.8.1.20, are SRs applicable.

SR 3.8.2.2


NOTE--------------------

When Unit 3 is not in MODE 1, 2, or 3, the Note to Unit 3 SR 3.8.2.1 is applicable.

I For required Unit 3 AC sources, the SRs of In accordance Unit 3 Specification 3.8.1, except with applicable SR 3.8.1.8 (when only one Unit 3 offsite SRs circuit is required), SR 3.8.1.12, SR 3.8.1.13, SR 3.8.1.17, SR 3.8.1.18 (ECCS load block requirement only), SR 3.8.1.19, and SR 3.8.1.20, are applicable.

i NOTE The requirements of SR 3.8.1.12.

SR3.8.1.13. and SR 3.8.1.19 are not required to be met during periods that

/

ECCS are not required.

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j 9706110108 970604 PDR ADOCK 05000277 P

PDR PBAPS UNIT 2 3.8-24 Amendment No. 210

AC Sources-Shutdown I

B 3.8.2

~

' BASES l

SURVEILLANCE SR 3.8.2.1 (continued)

]

REQUIREMENTS required to be met since only one offsite circuit is i

required to be OPERABLE. SR 3.8.1.17 is not required to be l

met because the required OPERABLE DG(s) is not required to undergo periods of being synchronized to the offsite circuit. SR 3.8.1.20 is excepted because starting independence is not required with the DG(s) that is not 4

required to be OPERABLE. Refer to the corresponding Bases J

I$

for LCO 3.8.1 for a discussion of each SR.

O S

This SR is modified by a Note. The reason for the Note is k

s to preclude requiring the OPERABLE DG(s) from being' paralleled with the offsite power network or otherwise N=g rendered inoperable during the performance of SRs, and to 8% f preclude de-energizing a required 4 kV emergency bus or B.li disconnecting a required offsite circuit during performance 23$

of SRs. With limited AC sources available, a single event 8EE could compromise both the required circuit and the DG.

It i

j.2 B is the intent that these SRs must still be capable of being I.8 E eat, but actual performance is not required during periods 2j when the DG and offsite circuit are required to be OPERABLE.

I.6g y

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SR 3.8.2.2 tw8

,3 This Surveillance is provided to direct that the appropriate 0W Surveillances for the required Unit 3 AC sources are si governed by the Unit 3 Technical Specifications.

]5e Perfomance of the applicable Unit 3 Surveillances will

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gs

,/

8 satisfy Unit 3 requirements, as well as satisfying this 8

Unit 2 Surveillance Requirement. Seven exceptions are noted 2

to the Unit 3 SRs of LC0 3.8.1.

SR 3.8.1.8 is excepted when a.s.

only one Unit 3 offsite circuit is required by the Unit 2

.B"5 Specification, since there is not a second circuit to E '

'e transfer to.

SR 3.8.1.12, SR 3.8.1.13, SR 3.8.1.17, j j[=3 i

SR 3.8.1.18 (ECCS load block requirements only), and i

8 I

SR 3.8.1.19 are excepted since these SRs test the Unit 3

.e y g di ECCS initiation signal, which is not needed for the AC e3m' sources to be OPERABLE on Unit 2.

SR 3.8.1.20 is excepted since starting independence is not required with the DG(s) l hg that is not required to be OPERABLE.

l The Frequency required by the applicable Unit 3 SR also j

governs perfomance of that SR for Unit 2.

(continued) i P8APS UNIT 2 B 3.8-46 Revision No. O I

AC Sources-Shutdown 3.8.2 I

' SURVEILLANCE REQUIREMENTS j

SURVEILLANCE FREQUENCY SR 3.8.2.1

.--------..--------NOTE--------------------

The following SRs are not required to be performed: SR 3.8.1.3, SR 3.8.1.9 through SR 3.8.1.11, SR 3.8.1.13 through SR 3.8.1.15, SR 3.8.1.18, and SR 3.8.1.19.

For required Unit 3 AC sources the SRs of In accordance Specification 3.8.1, except SR 3.8.1.8, with applicable SR 3.8.1.17, and SR 3.8.1.20, are SRs 1

applicable.

SR 3.8.2.2

---.--.------------NOTE--------------------

When Unit 2 is not in MODE 1, 2, or 3, the Note to Unit 2 SR 3.8.2.1 is applicable.

For required Unit 2 AC sources, the SRs of In accordance Unit 2 Specification 3.8.1, except with applicable i

SR 3.8.1.8 (when only one Unit 2 offsite SRs circuit is required), SR 3.8.1.12, SR 3.8.1.13, SR 3.8.1.17, SR 3.8.1.18 (ECCS load block requirement only), SR 3.8.1.19, and SR 3.8.1.20, are applicable.

i NOTE The recuirements of SR 3.8.1.12.

SR3.8.1.13. and SR 3.8.1.19 are not required to be met during periods that ECCS are r.ot required.

I

(

PBAPS UNIT 3 3.8-24 Amendment No. 214

AC Sources-Shutdown B 3.8.2 i

[

BASES l

SURVEILLANCE SR 3.8.2.1 (continued) i REQUIREMENTS required to be met since only one offsite circuit is j

required to be OPERABLE.

SR 3.8.1.17 is not required to be i

met because the required OPERABLE DG(s) is not required to j

undergo periods of being synchronized to the offsite

)

circuit. 51 3.8.1.20 is excepted because starting ce j

'd independence is not required with the DG(s) that is not i

8 required to be OPERABLE.

Refer to the corresponding Bases

'1 l

u, for LC0 3.8.1 for a discussion of each SR.

This SR is modified by a Note.

The reason for the Note is

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to preclude requiring the OPERABLE DG(s) from being

)

g paralleled with the offsite power network or othemise rendered inoperable during the perfomance of SRs, and to j

n j

j 25$

preclude de-energizing a required 4 kV emergency bus or i

.m p disconnecting a required offsite circuit during performance of SRs. With limited AC sources available, a single event E' a a i

could compromise both the required circuit and the DG.

It

)3g 2-is the intent that these SRs must still be capable of being

(

\\

l met, but actual performance is not required during periods 1.5 when the DG and offsite circuit are required to be OPERABLE.

e 8

l

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g.ja.

k >SR g

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3.8.2.2 0h i

j ggj j

This Surveillance is provided to direct that the appropriate f

Surveillances for the required Unit 2 AC sources are I

g g 'g governed by the Unit 2 Technical Specifications.

Performance of the applicable Unit 2 Surveillances will f

f}

satisfy Unit 2 requirements, as well as satisfying this

,I i

i 4

Unit 3 3urveillance Requirement.

Seven exceptions are noted I

q w.j to the Unit 2 SRs of LCO 3.8.1.

SR 3.8.1.8 is excepted when Sd only one Unit 2 offsite circuit is required by the Unit 3

~

.! k R Specification, since there is not a second circuit to l

i E~9 transfer to. SR 3.8.1.12, SR 3.8.1.13, SR 3.8.1.17, 2E2 SR 3.8.1.18 (ECCS load block requirements only), and 2$$

SR 3.8.1.19 are excepted since these SRs test the Unit 2 8

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u>g ECCS initiation signal, which is not needed for the AC 1

o sources to be OPERABLE on Unit 3.

SR 3.8.1.20 is excepted 1

O jd O F since starting independence is not required with the DG(s)

I l

that is not required to be OPERABLE.

The Frequency required by the applicable Unit 2 SR also 4

I governs performance of that SR for Unit 3.

(continued) l i

5 PBAPS UNIT 3 B 3.8-46 Revision No. O i

i

.