ML19250C057
| ML19250C057 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 10/05/1979 |
| From: | Dills J, Heaker F TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML19250C050 | List: |
| References | |
| SI-401, NUDOCS 7911060457 | |
| Download: ML19250C057 (14) | |
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DISTRIBUTION IC Plant Master File
_ _ Superintendent Sequoyah Nuclear Plant Assistant Superintendent (Oper.)
Assistant Superintendent (Maint.)
Administrative Supervisor Maintenance Supervisor (M)
Assistant Maintenance Supervisor (M)
Maintenance Supervisor (E)
Assistant Maintenance Supervisor (E)
Maintenance Supervisor (I)
SURVEILLANCE INSTRUCTION IU Results Supervisor IC Operations Supervisor SI-401 1U Quality Assurance Supervisor Health Physics RADIOACTIVE LIQUID WASTE Public Safety Services Supv.
EFFLUENT - CONTINUOUS Chief Storekeeper RELEASES - STEAM GENERATOR Preop Test Program Coordinator BLOWDOWN IC Outage Director
/g lA"', Chemical Engineer Units 1 and 2 1C Radiochem Laboratory Instrument Shop Reactor Engineer Instrument Engineer Mechanical Engineer IU Staff Industrial Engineer IC Training Center Coordinator PSO - Chickamauga Engrg Unit - SNP Prepared By:
F.K. Heacker Public Safety Services - SNP IC Shift Engineer's Office Revised By:
John T. Dills IC Unit Control Room
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QA&A Rep. - SNP Submitted By:
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Health Physics Laboratory Supervisor K)
IU Chief, Nuclear Generation Branch IU P Prod Central Office File l0 $~/79 I
POU: Review:
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NRC-IE:II Power Security Officer, 604 PRB-C (C,5{\\ M Nuclear Materials Coordinator Date Approv.ed:
Manager, OP-QA&A Staff
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IU P Prod Plant Eng. Branch Rev. No.
Date Revised Pages Rev. No.
Date Revised Pages 0
7/19/76 All
/6)f/79 1
All, Title Change The last page of this instructica is Number 12
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SQNP SI-403 Page 1 of 1 Rev. 1 1.
TI procedure for evaluating technical specification compliance when discharge acceptance criteria is not satisfied.
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SQNP SI-401 Page 1 of 6 Rev. I 1.0 SCOPE 1.1 Description 1.1.1 Establish and document the radiochemical analyses required by the technical specifcations for continuous liquid effluents.
1.2 Objective 1.2.1 Satisfy surveillance requirements for continuous releases from steam generator blowdown (s) as follows:
a.
Continuously monitoring liquid waste discharge by the use of radiation monitor setpoints (LCO 3.3.3.9, SR 4.3.3.9).
b.
Verify release concentrations (after dilution) of liquid wastes entering the unrestricted area meet 10CFR20, ap-pendix B, Table II, column 2 concentrations (Table 4.11-1, section B, SR 4.11.1.1.3, Table 3.3-12 actions 28 and 30.)
NOTE: Dissolved and entrained noble gas concentration requirements are covered in SI-403.
c.
Verify instrumentation surveillance requirements for source check (Table 4.3-8 item Ib) and flow (Table 4.3-8 item 3b).
1.3 Frequency NOTE: SI-401 for sections 1.3.1, 1.3.2, 1.3.3 covers a maximum surveil-lance period of one week (Sunday through Saturday midnight). All SI-401 performances will be initiated by the chemical laboratory.
1.3.1 All Modes - Prior to Initiating Release a.
Verify isotopic concentrations (after dilution) of liquid wastes entering the unrestricted areas meet 10CFR20 limiting concentrations (including dissolved and entrained noble gases).
1.3.2 All Modes - Daily During Release a.
Sample in proportion to flow discharged for day and obtain monitor response.
1.3.3 All Modes - Weekly a.
Verify isotopic concentrations (after dilution) of liquid waste entering the unrestricted area meet 10CFR20 limiting concentrations (excluding dissolved and noble gases concen-tration greater than four half lives (decay corrected)).
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SQNP SI-401 Page 2 of 6 Rev. I 1.3.4 All Modes - Once/8 hours Verify isotopic concentrations (after dilution) of liquid a.
waste entering the unrestricted area meet 10CFR20 limiting concentrations (including dissolved and entrained noble gases).
1.4 Logic Sequence - Continuous Release 1.4.1 Operations decides to discharge steam generator blowdown to environment. Operations notifies the chemical laboratory to sample prior to initiating discharge (SI-401).
1.4.2 Chemical laboratory samples blowdown flash tank according to TI-16, method B.13 while pumping blowdown to the condensate system.
1.4.3 Chemical laboratory analyzes sample according to TI-12, method B.5, using SI-401 computer program, establishes monitor set-point and allowable release flowrate. The lead chemical analyst, SE5, submits SI-401 data package to the shift engineer to re-view and approve for release to the environment (cooling tower blowdown).
1.4.4 Operations submits MR to adjust monitor setpoint. Operations, upon completion of MR releases blowdown according to S0I-15 and within limits noted on SI-401 cata sheet 1.0.
1.4.5 Chem! cal laboratory proportionally samples the discharge daily.
Chemical laboratory analyzes composite sample weekly for Tech.
Spec. compliance.
Chemical laboratory prepares portions (proportionally to amount discharged) of weekly compcsite for monthly and quarterly composites.
Chemical laboratory initiates ensuing weeks SI-401.
Cognizant Chemical Engineer prepares a technical specification evaluation (per TI punchlist) if limits are exceeded using available dilution flows.
1.4.6 Operations notifies chemical laboratory when release has been terminated.
NOTE:
If radiation monitor is declared inoperable during release, operations notifies the chemical Jaboratory to sample once/8 hours (conditional SI-401).
2.0 INSTRUCTIONS 2.1 Prior to Release 2.1.1 Operations Responsibility 2.1.1.1 Notify the chemical laboratory to sample steam-generator blowdown flash tank prior to discharge.
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SQNP SI-401 Page 3 of 6 Rev. 1 NOTE: Flash tank contents at this time will be pumped to the condensate system.
2.1.1.2 Insert monitor [1-RM-90-120(121)] or [2-RM-90-120(121)]
check source and verify monitor response. Record mon-itor identification, check source response, monitor operability and operator initials on data sheet 1.0.
NOTE:
If monitor does not respond immediately notify the shift engineer - Do not releas to the cooling tower blowdown.
2.1.2 Chemical Laboratory Responsibility 2.1.2.1 Sample the steam generator Llowdown flashtank in ac-cordance with TI-16 method B.13 while contents are being routed to the condensate system.
2.1.2.2 Analyze the sample according to Technical Instruction No. 12, Method B.5 using SI-401 computer program for total MPC fraction, individual isotopic concentrations and dissolved and entr.ained noble gas concentrations.
Record the total MPC fraction.(before dilution) on SI-401 data sheet 1.0.
NOTE: Dissolved and entrained noble gas concen-trations will be included in computer printout but will not be logged on SI data sheet.
2.1.2.3 Compute monitor response in CPM according to TI-18 section C using SI-401 computer program (TI-12). Re-cord the calcalated monitor response on SI-401 data sheet 1.0 and TI-37 logsheet A.17 for applicable unit.
2.1.2.4 Compute monitor setpoint in CPM according to TI-18 section C using SI-401 computer pr $ ram.
Record value on SI-401 data sheet 1.0 (must be 2, CPM value cal-culated in step 2.1 2.3) and TI-37 logsheet A.17 for aptropriate unit.
2.1.2.5 Determine the allowable discharge flowrate (GPM) using total MPC (before dilution), after dilution total SPC
($ 0.75), total dissolved noble gases ($ 2.0 x 10
pei/ml after dilution) concentration and dilution flowrate (1500 GPM per unit) in accordance wit' TI-12 method B.5 computer program nd record on SI-401 data sheet 1.0.
Attach TI-12 evaluation to SI-401 data package.
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SQNP TI-401 Page 4 of 6 Rev. I 2.1.2.6 If steam generator blowdown flashtank is okay to be released (or being released), assign a release permit number to SI-401 data package in accordance with TI-18 section D and record cu data coversheet and data sheet 2.0.
TI-18 logsheets attachments A an; B (section D).
Example:
79-035-14-5 (year (79) - total number of releases for year to date (035) - tank number (14-unit 1) fifth release for year from tank (14))
2.1.2.7 Transmit SI-401 data package to the shift engineer for review and approval to release (or continue) to the envfronment (cooling tower blowdown).
2.2 Release of Steam Generator Blowdown Flashtank 2.2.1 Operations Responsibility 2.2.1.1 Operator initiates maintenance request to have ivetrument mechanic (s) set radiation monitor alarm /
trip set at the value (CPM) computed in step 2.1.2.4.
Record maintenance request number and monitor identi-fication on data sheet 2.0 and attach a copy of the completed maintenance request to SI-401 data package.
NOTE: Flashtank contents will be pumped at this time to the condensate system.
2.2.1.2 Record radiation monitor reading prior to the in-itiation of release on d;ca sheet 2.0.
2.2.1.3 Af ter completion of the adjustment of the alarm / trip setpoint, initiate the discharge according to SOI-15 at a flowrate less than or equal to the computed value in step 2.1.2.5.
NOTE: Attach a copy completed 50I-15 working package to SI-401 data package.
2.2.1.4 Transmit SI-401 package to t_e lead ctemical lab-oratory analyst (SES) to compl.te their applicable portion (s) of the SI-401 data package.
L.2.1.5 Notify the chemical laboratory when release has been terminated (discharge to cooling tower blowdown) and when the radiation monitor (s) has been declared inoperable.
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SQNP TI-401 Page 5 of 6 Rev. 1 2.2.2 Chemical Laboratory Responsibility 2.2.2.1 Daily a.
Using FR-15-25 flow chart (located on elevation 662 of turbine building near the bottom of conden-ser hotwell for each unit), evaluate the quantity of water discharged from blowdown system to the environment for day to sample time.
(Note:
(1) Evaluation of flow and flashtank to be sampled within the last hour of day (11pm-11:59pm') for that day.
(2)
If FR-15-25 is de-
- clared inoperable, immediately notify the shift engineer (using SIL CIO, attachment F) to term-inste discharge to the cooling tower blowdown and note in the remarks section) and record on data sheet 2.0 and TI-37 logsheet A.17.
b.
Sample steam generator blowdown flashtank ac-cording to TI-16 method B.13 proportionally to flow discharged (;tep 2.2.2.1) according to TI-12 method C.5 daily until termination of release to environment (note in remarks section of data sheet 2.0 when release was terminated and by whom) or end of week (through Saturday evening). Observe monitor response (1(2)-RM 120(121)) and record on SI data sheet 2.0 daily.
2.2.2.2 Weekly a.
At the end of each week, analyze the composite for gamma emitting isotopes (including I131) according to TI-12 Method B.S.
NOTE: Decay correct to the weighted midpoint of release for week.
b.
Determine the average total MPC fraction (before and after dilution), total volume (released and dilution) for week according to TI-12, method B.5 SI-401 computer program and record on data sheet 2.0 and TI-37 logsheet A.17.
If the after dilution acceptance criteria is not met, im-mediately notify the cognizant engineer (chemical) to perform the technical specification evaluation per TI (punchlist) and attach to SI data package.
2.2.2.3 Add to *he monthly and quarterly composites (continuous releas_) bottles propertionate volume from the weekly composite according to flow discharged to the environ-ment.
Each unit will have separate composites.
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SQNP TI-401 Page 6 of 6 Rev. I 2.3 Monitoring Steam Generator Blowdown During Period of Radiation Monitor Inoperability 2.3.1 Operations Responsibility 2.3.1.1 Notify the hemical laboratory when the steam gen-erator blowdown discharge radiation monitor is de-clared inoperable.
2.3.1.2 Notify the chemical laboratory when the radiation monitor has been declared operable.
2.3.2 Chemical Laboratory Re.sponsibility 2.3.2.1 Sample the steam generator blowdown flashtank ac-cording to TI-16, method B.13.
Record date, time of samples on SI-401 data sheet 3.0.
2.3.2.2 Analyze the sample according to TI-12, method B.4 (gross gamma) SI-401 acomputer program and record total activity on data sheet 3.0.
Report data to the shift engineer using a SILC10 form, attachment.
NOTE: Also include gross gamma activity after di-lution based on grab sample and instantaneous release flowrate (FR-15-25) and dilution flow-rate (1500 GPM - normally) on SILC10, attach-ment F.
Record data on TI-37 logsheet A.17.
3.0 ACCEPTANCE CRITERIA 3.1 Acceptance criteria is noted on applicable data sheet for each parameter monitored.
4.0 ACTION REQUIRED 4.1 Notify the shift engineer and cognizant chemical engineer or chemical engineering associate of any out of limit specifications.
4.2 Prepare a proportional sample volume from weekly composite for monthly and qua*rterly composites (each unit).
4.3 If the total MPC fraction (af ter dilution at the cooling tower blowdown),
allowable release flowrate is exceeded then the cognizant chemical en-gineer will prepare a written evaluation for technical specification compliance and attach to SI-401 data package based on dilution available.
(Example:
SI-401 after dilution MPC = 1.15 (data sheet 2.0) and unit 2 not in operation and blowdown (total) of 20,000 GPM. The additional di-lution flow for calculational purposes is 6500 GPM.
NOTE: 9000 GPM -
Radwaste tanks; 3000 GPM for condensate tanks, 8000 GPM available for evaluating compliance).
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SQNP SI-401 Page 1 of 1 Rev. 1 SI DATA PACKAGE COVER SIEET RADIOACTIVE LIQUID WASTE EFFLUENT - CONTINU0bS RELEASES STEAM GENERATOR BLOWDOWN Unit Performed By Date Analyst (s)
List of data sheets attached.
Instruction No.
Data Sheet No.
Pages SI-401
" 2.0 1
SI-401 2.0 2
TI-12 Evaluation NA TI-(Punchlist)
Tech. Spec. evaluation - if required NA SOI-15 Working copy (copy)
NA MRff Copy NA Were technical specification criteria satisfied?
Yes _
No If criteria were not satisfied, notify th shift engineer who completes the following:
Was a limiting condition for operation violated?
Yes (explain in remarks)
No (explain in remarks)
Verified By Date Shift Engineer Time Reason for test:
Required by schedule (continuation of release)
Initiation of release to cooling tower blowdown Inoperable radiation monitor (RM-90-120, 121)
Other (explain)
Review of Test Results Chemical Engineering Associate Date __
Review and Approval of Test Results Lead Chemical Engineer Date Cognizant Chemical Engineer Date QA Review of Test Results QA Staff Date Remarks
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SI-401 Page 1 of 1 Rev. 1 DATA SIIEET 1.0 Unit RADIOACTIVE LIQUID WASTE EFFLUENT - CONTINUOUS RELEASES STEAM GENERATOR BLOWDOWN Release Number (step 2.1.2.6)
I.
Pre-Release Requirements Procedure Acceptance Step Description Data Initials Criteria 2.1.1.2 Radiation Monitor
-RM NA SourceCgeck CPM NA operable Yes/NO Yes (circle one) 2.1.2.2 Total MPC fraction NA 2.1.2.3 Calculated Monitor CPM NA
Response
2.1.2.4 Monitor Setpoint CPM 1.25 *(value in Step 2.1.2.3) 2.1.2.5 Dilution flowrate 1500 GPM NA allowable flowrate -
GPM NA discharge Calculated after dilution MPC d 0.75 total 2.1.2.7 Shift Engineer approval Date NA to release to environment or to continue Time discharging Remarks:
Note:
General: As soon as any parameter is found out of limits, notify the shift engineer using a SILC10 form, attachment F.
After completing entire data package obtain shift engineer signature on data coversheet to show acknowledgement of out of limit specifications. Note in remarks section.
(1)
If monitor is declared inoperable or does not respond to check source immediately notify the shift engineer. Do not release to the cooling tower blowdown.
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SQNP SI-401 Page 1 of 2 Rev. 1 DATA SHEET 2.0 Unit RADIOACTIVE LIQUID WASTE EFFLUENT - CONTINUOUS RELEASES STEAM GENERATOR BLOWDOWN Date Sheet 2.0 - Sections 2.:.1.1, 2.2.1.2, 2.2.1.3 are operations responsiblity.
Data Sheet 2.0 - Sections 2.".2.1, 2.2.2.2, 2.2.2.3 are chemical responsibility.
Release Number (step 2.1.2.6)
II Release Blowdown to Cooling Tower Blowdown Procedure Acceptance Step Description Data ~
Initials Criteria 2.2.1.1 Radiation Monitor NA Setpoint complete (MR#)
Operator (MR number)
-RM-90 2.2.1.2 Monitor Reading CPM NA 2.2.1.3 Discharge per GPM
< Value in SOI-15 at GPM Step 2.1.2.5 (Datasheet 1.0) 2.2.2.1 Flow (gpd), monitor (CPM) - DAILY (FR-15-25)
(R.
Flow (GPD)(1)
CPM}730-120,121)
DATE TIME INITIALS 2.2.2.2b MPC-before dilution (AVG)
NA MPC-after diltuion (AVG) 1 0.75 Total Discharge Volume gals NA Total Dilution Volume gals NA 2.2.2.3 Addition to YES/NO YES composites (monthly (Circle one) and quarterly) complete Remarks:
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SQNP TI-401 Page 2 of 2 Rev. 1 DATA SKEET 2.0 Unit RADIOACTIVE LIQUID WASTE EFFLUENT - CONTINUOUS RELEASES STEAM GENERATOR BLOWDOWN NOTES: General: As soon as any parameter is found out of limits, notify the shift engineer using a SILC10 form, attachment F.
After completing entire data package obtain shift engineer signature on data coversheet to show acknowledgement of out of limit specifications.
Note in remarks section.
1.
If flow recorder or~ radiation monitor is declared inoperable, have operator immediately stop the release to environment and note in remarks section (and coversheet).
2.
Notify the chemical engineering associate and cognizant chemical engineer of any out of limit specification.
The cognizant engineer will then evaluate for technical specification compliance per TI (punchlist) and attach to the SI data package.
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SQNP SI-401 Page 1 of 2 Rev. 1 DATA SHEET 3.0 Unit RADI0 ACTIVE LIQUID WASTE EFFLUENT - CONTINUOUS PILEASES STEAM GENERATOR BLOWDOWN Data Sheet 3.0 Sections 2.3.1.1 and 2.3.1.2 are operations responsiblity.
Date Sheet 3.0 Sections 2.3.2.1, 2.3.2.2, 2.3.2.3 are.:hemical responsiblity.
Release Number III Inoperable Rao ation Monitor - Release to Cooling Tower Blowdown Procedure Acceptance Step Description
-Data Initials Criteria 2.3.1.1 &
Notified Chem Inoperable / Operable NA 2.3.1.2 Lab of inoperable /
(circle one)
Operable operable radiation monitor Date Time 2.3.2.1 Sampled flashtank 5 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> discharge per TI-16 Date between steps Method B.13 2.3.1.1 and Time 2.3.2.1 2.3.2.2 Gross gamma activity (I) pCi/ml NA (BD)
Gross gamma activity ( )
pCi/ml 5 1x10 pCi/ml( )
~
(AD)
Totalgapgg(BD) isotopic pCi/ml NA activity Total MPC isotopic ( )
$ 1.0( )
(AD)
Instantaneous Flowrate-gpm NA Discharge (FR-15-25)
Dilution Flowrate 1500 gpm NA 2.3.2.3 SI-401 section 2.3 Yes/No rescheduled from time (circle one)
Analyst in step 2.3.2.1
/
(date/ time)
Remarks:
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SQNP SI-401 Page 2 of 2 Rev. 1 DATA SHEET 3.0 Unit RADIOACTIVE LIQUID WASTE EFFLUENT - CONTINUOUS RELEASES STEAM GENERATOR BLOWDOWN NOTES:
General: As soon as any parameter is fouad out of limits, notify the Shif t Engineer using a SILC10 form, attachment F.
After completing the entire data package, obtain shift engineer signature on data coversheet to show acknowledgement of out of limit specification.
Note in remarks se *. ion.
1.
AD denotes "af ter dilution", BD "before di.lution".
2.
Notify the chemical engineering associate and cognizant engineer if out of limits. The cognizant engineer will on a individual basis evaluate for Technical Specification compliance per TI (punchlist) and attach evaluation to SI-401 data package.
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