ML20097D496

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Proposed Interim & Final Tech Spec 3.3.3.7 Re Chemical Detection Sys
ML20097D496
Person / Time
Site: South Texas  STP Nuclear Operating Company icon.png
Issue date: 06/02/1992
From:
HOUSTON LIGHTING & POWER CO.
To:
Shared Package
ML20097D493 List:
References
NUDOCS 9206100196
Download: ML20097D496 (4)
v • d • e


Text

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ATTACHMENT 2 PROPOSED INTERIM TECIINICAL SPECIFICATION CllANGE 3.3.3.7 MISC \\92 078.003 9206100196 920602

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. CilEMICAL D17ECTION SYSTEMS LIMITING COdDITION FOR OPERATION 3.3.3.7 The independent chemical Detection Systems of each Unit shall be OPERABLE with their Alarm / Trip setpoints adjusted 'o actuate at the following concentrations:

a.

Vinyl Acetate

$ 10 ppm b.

Anhydrous Ammonia /

6 25 ppm Ammonium flydroxide/

hPPLICABILITY:

All MODES.*

ACTION:

UNIT 1:

a.

With one Chemical Detection System inoperable, restore the inoperable system to OPERABLE status within 7 days or place the affected channel in its tripped condition.**

b.

..ith two or more Chemical Detection Systems inoperable, within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> initiate and maintain operation of the control Room Emergency Ventilation System in the recirculation mode of operation.

UNIT 2:

a.

With one Chemical Detection System inoperabic, restore the inocerable system to OPERABLE status within 7 days or within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> initiate and maintain operation of the Control Room Emergency Ventilation Syst'em in the recirculation mode of operation.

b.

With both Chemical Detection Systems inoperable, within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> initiate and maintain operation of the Control Room Emergency Ventilation System in the recirculation mode of operation.

EURVEILLANCE REQUIREMENTS 4.3.3.7 Each Chemical Detection System shall be demonstrated OPERABLE by performance of a CHANNEL Cl!ECK at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, an ANALOG and/or DIGITAL CilANNEL OPERATION TEST at least once per 31 days and a CilANNEL CALIBRATION at Icast once per 18 months.

  • In MODES S and 6, if it becomes necessary to place the Control Room Emergency ventilation System in the recirculation mode of operation and if other Technical Specifications (3.7.7 " Control Room Makeup and Cleanup Filtration System" and/or Table 3.3-3, Item 10 " Control Room Ventilation")

require placing the system in the recirculation and maPeup filtration mode, then in this situation, place the system in the f ltered recirculation mode 2DlY.

    • The inoperable system may be bypassed for up to 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> for surveillance testing of the other systems per Specification 4.3.3.7.

I SOUTil TEXAS - UNITS 1 & 2 3/4 3-75 AMENDMENT NOS. 15 AND 5

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1 ATTACliMENT 3 PROPOSED FINAL TECilNICAL SPECIFICATION CilANGE 3.3.3.7 I

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3. 3.3. 7 -TwA ndependent Chemical Detection Sys tems shall be OPERABLE with i

their' Alarm / Trip Setpoints adjusted to actuate at the following concentrations:

a.

Vinyl Acetate

< 10 ppm i

ts.

Anhydrous Ammonial

< 25 ppm Ammonium Hydroxide /

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AFptICABILITY:

All MODES.*

b h O' ACTION:

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a.

With o.) M.o

.' k -tion Systcm inoperaale, restore the inoperable system 5: Oi'U Ag M.. s within 7 days orMMn-the--next-C houf+

ir.iti;iL wi y >.i k WeersMon-+f-t+;e4ontra 1 n00.2 - C;c =gency4enti ~

M-ion-Gysh- +-the-rechculaMen-mode-ef eg r5 tion. **

% er mon b.

With +eMAChemi:al Detection Systems inoperable, within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> initi-ate and maintain operation of the Control Room Emergency Yentilation System in the recirculation mode of operation.

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4. 3. 3. 7 Erth C'.cmical Octectie-fyste:n shall be demenstrated OPE tAELE by ptr-formance ci a CHANNEL CHECK at 1.:ut once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, an /$NALOGvCHANNEL OPERAi]ONAL lEST at least once pr 31 days and a CHANNEL CALIBRATION at 1 cast once per 18 aonths.

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'In MODES 5 and 6, if it becoces necessary to place the Control Room Ccergency ventilation Sys tem in the recirculation mode of operation and if other Technical Specifications (3. 7. 7 " Control Room Hakeup and Cleanup filtration System" and/or Table 3.3-3, Jtem 10 " Control Rocm ventilation") require placing the system in the recirculation and mateup filtration mode, then in this situation, place the system in the fil tered rer.i rculation mode oniv.

" %c. inepembic sf uw mg (c lijpW>cd de u(Ud 4 hous fe sorve'illance 4cchrg A

of +he che sysiems pr sydficutan 4.3.3.7.

~ SOUTH T D:A5. Un17 5 1 & 2 3/4 3-75 AMENDMENT NOS.15 AND5 j

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