ML20205C668
| ML20205C668 | |
| Person / Time | |
|---|---|
| Site: | Millstone, Haddam Neck, 05000000 |
| Issue date: | 12/13/1985 |
| From: | CONNECTICUT YANKEE ATOMIC POWER CO. |
| To: | |
| Shared Package | |
| ML20204H467 | List:
|
| References | |
| EOP-35-FR-H.5, NUDOCS 8810260551 | |
| Download: ML20205C668 (5) | |
Text
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E. J. Mrec:
2-1-85 Form Appr vcd by Station superintendent Effei:tive Dnto STATION PROCEDllRE COVER SHEET
[
A.
IDENTIFICATION LI Number E0P 35 FR-H.S Rev.
1 Title RESPONSE TO STEAM GENERATOR LOW LEVEL Prepared By J. D. Catlin B.
REVIEW I have reviewed the above procedure and have found it to be satisfactory.
TITLE SIGNATURE DATE DEPARTMENT HEAD J) is C.
UNREVIEWED SAFETY QUESTION EVALUATION DOCUMENTATION REQUIRED:
(Significant change in procedure method or scope YES [ ]
NO bd as described in FSAR)
(If yes, document in PORC/SORC meeting minutes)
)
ENVIRONMENTAL IMPACT (Adverse environmental impact)
YES ( )
NO T)4 (If yes, document in PORC/SORC meeting minutes)
D.
INTEGRATED SAFETY REVIEW REQUIRED (Affects response of Safety Systems, performance YES [ ]
NO > <J of safety-related control systems or performance of control systems which may indirectly affect safety system response.)
(If yes, document in PORC/SORC meeting minutes.)
E.
PROCEDURE REQUIRES b ORC REVIEW YES %
NO [ ]
h 0RC APPROVAL F.
M _0RC Meeting Number 3-seam G.
APPROVAL AND IMPLEMENTATION The attached procedure is hereby approved, and effective on the date below:
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I E0P 35 FN-H.5 Page 1 Rev. 1 I
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RESPONSE TO STEAM GENERATOR LOW LEVEL Paae No.
Eff. Rev.
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RESPONSE TO STEAM GENERATOR LOW LEVEL E0P 35 FR-H.S Page 2 Rev. 1 J
A.
PURPOSE This procedure provides actions to respond to a steam generator low level condition.
B.
ENTRY CONDITIONS This procedure was written for Modes 1, 2, 3, and 4.
Using this procedure when not in these modes requires a step by step evaluation I
to determine if the required action is still applicable to current plant conditions.
i This procedure is entered from E0P 35 F-0.3, HEAT SINK Critical Safety L
Function Status Tree on a YELLOW condition, r
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e RESPONSE TO STEAM GENERATOR LOW LEVEL E0P 35 FR-H.5 Page 3 Rev. I' U
STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OSTAINED NOTE Throughout this procedure, "affected" refers to any SG in which narrow range level is less than 4% (34% for adverse containment).
CAtTTION Steam releases from affected SG(s) should be minimized.
1 Identify Affected SG(s) a.
Narrow range level - LESS a.
Return.to procedure and THAN 4% (34%
step in effect.
FOR ADVERSE CONTAINMENT) 2 Verify Blowdown Isolatica Manually close valves.
Valves From Affected sG(s) -
CLOSED i
CAUTION AW flow should not be established to any faulted SG that has been isolated unless 4
needed for RCS cooldown.
J 3
Check If Affected SG(s) Not Faulted IF affected SG(s) a.
Check pressure in affected a.
F SG(s) -
previously identified
- 1) NOT DECREASING IN AN as faulted, THEN return UNCONTROLLED MANNER to procedure and step in A_ND effect.
IF NOT, THEN go
- 2) NOT COMPLETELY to E0P 35 E-2, FAULTED DEPRESSURIZED STEAM GENERATOR ISOLATION, Step 1.
O OPS 064-1 3-44
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RESPONSE TO STEAM GENERATOR LOW LEVEL E0P 35 FR-H.5 Page 4 Rev. 1
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STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OSTAINED 4
Check AFW Flow To Affected E affected SG(s) wide range SG(s) - GREATER THAN 75 level greater than 4% (34%
CPM for adverse containment), THEN establish AFW flow as necessary to refill affected SG(s).
E affected SG(s) wide range level less than 4% (34% for adverse containment), THEN establish AFW flow to affected SG(s) at a rate not to exceed 100 gpm per SG.
5 Continue Filling Affected SG(s) Until Narrow Range Level Greater Than 4%
(34% For Adverse Containment) 6 Return To Procedure and Step In Effect
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