ML17250A579

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Containment Post Accident Charcoal Filter Bypass Flow.
ML17250A579
Person / Time
Site: Ginna Constellation icon.png
Issue date: 04/09/1980
From:
ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17250A560 List:
References
PT-25, NUDOCS 8009160578
Download: ML17250A579 (7)


Text

UilNNA U l A t [ma UHlT +f ROCHESTER GAS A%) ELECTRIC CORPORATION COM PLKTED

GINNA STATION CONTROLLED COPY %ASSER DATE
-

TlhK':-

PROCEDURE NO. REV. NO.

CONTATMKNT POST ACCIDENT CHARCOAL FILTER BY-PASS FLOW TECHNICAL REVIEW PORC 3-31-80

( QC ms~

REVIEW DATE APPROVED FOR USE P SUPERINTENDENT DATE QA ~ X NON-QA CATEGORY 1.0 r

REVIEWED SY:

/

THIS PROCEDURE CONTAINS 4 , PAGES.

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PERIODIC TEST PROCEDURE PT-25 CONTAIQKNT POST ACCIDENT CHARCOAL FILTER BY-PASS FLOM

1.0 PURPOSE

To determine the by-"pass flow of the containment post accident charcoal filters (A & B Units).

2.0 TEST REQUIREMENTS:

2.1 The acceptance criteria for each post accident charcoal filter bank is that each bank shall exhibit < 1/ by-pass flow.

2.2 Each charcoal filter bank pressure drop shall not be in excess of three inches of water.

3.0

REFERENCE:

3.1 Plant Technical Specification, Section 4.5.2.3.

INITIAL CONDITIONS:

Plant is at the cold or refueling shutdown status.

4.2 The A 6 C containment recirculation fans are available for operation and their air flow paths may be aligned to the respective post accident charcoal filter bank as desired.

r 4.3 All vendor documentation required by the applicable purchase order prior to start of work has been submitted and found acceptable.

QC Supervision A SUP has been issued for the job.

4.5 Test personnel are qualified in accordance with A-1102.

/ 'I

5.0 PRECAUTIONS

5.1 Radiation protection practices will be observed at all times.

Y'I'-Zb 2

6.0 INSTRUCTIONS

NOTE: If only one unit is to be tested, mark other one N/A.

(., If carbon samples are required for iodine efficiency testing an absorber cell must be removed and replaced before testing takes "A" Unit place (the exact location of this sample cell must be recorded).

6.2 Thoroughly inspect the filter bank undergoing testing for damaged charcoal cells, condition of and proper compression of cell gaskets and other mechanical defects through whicy by-pass flow may occur.

NOTE: List all observed deficiencies and corrective actions taken to assure satisfactory test results.

6.3 Properly align dampers of unit to be tested so that the air flow from the associated containment recirculation unit is flowing through the charcoal bank.

NOTE: Damper may be properly aligned by pressing in the armature of Relay CFlA-L (RA2 rack in relay e 'room) for the A charcoal unit and Relay CFlC-L (RA-3 rack in relay room) for the B charcoal unit.

6.4 Verify the following:

6.4.1 Normal Loop Entry damper closed.

6.4.2 Charcoal Bank inlet damper open.

6.4.3 Charcoal Bank outlet damper open.

6.5 Start associated recirc. fan for charcoal bank undergoing test (A fan for A bank),

(C fan for B bank).

6.6 Mass air flow through charcoal bank has been determined and recorded on attached data sheet.

6.7 Determine the charcoal filter bank differential pressure and record on data sheet.

NOTE: No h, P devices are installed on these units hence the upstream and downstream static pressures may be secured with a pitot tube. The difference of these readings, are to be considered as the bank 6 P;

"A" Unit "B" Unit 6.8 Connect downstream sample line and determine background.

(., The F-ll gas will be injected and a zero time established, the concentration ratio will be recorded and plotted to zero time to give a mechanical leak rate (percent penetration).

Record by-pass flow on data sheet.

6.10 If a leak rate in excess of 1/ is found, the leakage path will be located and remedial action will be taken (as per vendor's recommendation). Retest as required.

6.11 After test is completed actuate the reset button for relays of step 6.3 and verify the following:

6.11.1 Normal Loop 'entry damper open.

6.11.2 Charcoal filter bank inlet damper closed.

6.11.3 Charcoal filter bank outlet damper closed.

6.S2 The vendor will submit, at a future date, a complete report of test results.

C01'1PLETED BY (RGB):

'VENDOR):

DATE COMPLETED:

SHIFT SUPERVISOR:

RESULTS AND TEST REVIEW: DATE:

PT-.25: 4 DATA 8 COE'KNT SHEET "A" Unit "B" Unit Unit Air Flow CFM CFM differential "H o I'H Unit Filter Bank

/ Bypass Flow (if applicable) 0/

/ Efficiency (if applicable)

I.ocation from which charcoal cell was removed for sample.

(if applicable)

COIMNTS "A" UNIT:

(i COUNTS "B" UNIT: