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)
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Text

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

  • DR ADOCK 0500049' P PDT.

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HisTRUMENTATIR11 37.L AE. y on

. 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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MISC \92 078.003

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3. 3.3. 7 -TwA ndependent Chemical Detection Sys tems shall be OPERABLE with their' Alarm / Trip Setpoints adjusted to actuate at the following concentrations:
a. Vinyl Acetate < 10 ppm i ts. Anhydrous Ammonial < 25 ppm

~

Ammonium Hydroxide /

AFptICABILITY: All MODES.*

ACTION: -p b h O' Sc4 pod cashm.

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.

N 1UPVf.J1 u LANCE j f M3EBESIS  ; ,.

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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.

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