ML17328A526
| ML17328A526 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 12/29/1989 |
| From: | INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | |
| Shared Package | |
| ML17328A525 | List: |
| References | |
| AEP:NRC:0900H, AEP:NRC:900H, NUDOCS 9001090186 | |
| Download: ML17328A526 (7) | |
Text
ATTACHMENT 2 TO AEP;NRC:0900H PROPOSED CHANGES TO THE DONALD C.
COOK NUCLEAR PLANT UNITS 1 AND 2 TECHNICAL SPECIFICATIONS
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CONTAINMENT SYSTEMS SURVEILLANCE RE UIREMENTS Continued shall be constituted of one basket each from Radial Rows 1, 2, 4, 6,
8 and 9 (or from the same row of an adjacent bay if a basket from a designated row cannot be obtained for weighing) within each bay. If any basket is found to contain less than 1220 pounds of ice, a representative sample of 20 additional baskets from the same bay shall be weighed.
The minimum average weight of ice from the 20 additional baskets and the discrepant basket shall not be less than 1220 pounds/basket at a 95% level of confidence.
The ice condenser shall also be subdivided into 3 groups of
- baskets, as follows:
Group 1 - bays 1 through 8, Group 2 - bays 9 through 16, and Group 3 - bays 17 through 24.
The minimum average ice weight of the sample baskets from Radial Rows 1, 2, 4,
6, 8 and 9 in each group shall not be less than 1220 pounds/
basket at a 95% level of confidence.
The minimum total ice condenser ice weight at a 95% level of confidence'hall be calculated using all ice basket weights determined during this weighting program and shall not be less than 2,371,450 pounds.~
3.
Verifying, by a visual inspection of at least two flow passages per ice condenser bay, that the accumulation of frost or ice on the top deck floor grating, on the intermediate deck and on flow passages between ice baskets and past lattice frames is restricted to a nominal thickness of 3/8 inches.
If one flow passage per bay is found to have an accumulation of frost or ice greater than this thickness, a representative sample of 20 additional flow passages from the same bay shall be visually inspected.
If these additional flow passages are found acceptable, the surveillance p'rogram may proceed considering the single deficiency as unique and acceptable.
More than one restricted flow passage per bay is evidence of abnormal degradation of the ice condenser.*
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At least once per 18 months by verifying, by a visual inspection, each ice condenser bay, that the accumulation of frost or ice on the lower inlet plenum support structures and turning vanes is restricted to a nominal thickness of 3/8 inches.
An accumulation of frost and ice greater than this thickness is evidence of abnormal degradation of the ice condenser.*
d.
At least once per 40 months by lifting and visually inspecting the accessible portions of at least two ice baskets from each 1/3 of the ice condenser and verifying that the ice baskets are free of detrimental structuxal wear, cracks, corrosion or other damage.
The ice baskets shall be raised at least 12 feet for this inspection.
The provisions of Specification 4.0.6 are applicable.
The provisions of Specification 4.0,7 are applicable.
COOK NUCLEAR PLANT - UNIT 1 3/4 6-27 AMENDMENT NO.
CONTAINMENT SYSTEMS ICE CONDENSER DOORS LIMITING CONDITION FOR OPERATION 3.6.5.3 The ice condenser inlet doors, intermediate deck doors, and top deck doors shall be closed and OPERABLE.
APPLICABILITY:
MODES 1, 2, 3 and 4.
ACTION; With one or more ice condenser doors open or otherwise inoperable, POWER OPERATION may continue for up to 14 days provided the ice bed temperature is monitored at least once per 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> and the maximum ice bed temperature is maintained less than or equal to 27 F; otherwise, restore the doors to their 0
closed positions or OPERABLE status (as applicable) within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
SURVEILLANCE RE UIREMENTS 4.6.5.3.1 Inlet Doors - Ice condenser inlet doors shall be:
a.
b.
Continuously monitored and determined closed by the inlet door position monitoring system, and Demonstrated OPERABLE during shutdown at least once per 18 months by:>'<
)
1.
Verifying that the torque required to initially open each door is less than or equal to 675 inch pounds.
2.
Verifying that opening of each door is not impaired by ice, frost or debris.
3.
Testing each one of the doors and verifying that the torque required to open each door is less than 195 inch-pounds when the door is 40 degrees open.
This torque is defined as the "door opening torque" and is equal to the nominal door torque plus a
frictional torque component.
~e provisions of Specification 4.0.6 are applicable.
COOK NUCLEAR PLANT - UNIT 1 3/4 6-30 AMENDMENT NO ~
CONTAINMENT SYSTEMS SURVEILLANCE RE UIREMENTS Continued 4,
Testing each of the doors and verifying that the torque required to keep each door from closing is greater than 78 inch-pounds when the door is 40 degrees open.
This torque is defined as the "door closing torque" and is equal to the nominal door torque minus a frictional torque component
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5.
Calculation of the frictional torque of each door tested in accordance with 3 and 4, above.
The calculated frictional torque shall be less than or equal to 40 inch-pounds.
4.6.5.3,2 Intermediate Deck Doors - Each ice condenser intermediate deck door shall be; a.
b.
Verified closed and that opening of each door is not impaired by ice, frost or debris by a visual inspection at least once per 7 days, and Demonstrated OPERABLE at least once per 18 months by visually verifying no structural deterioration, by verifying free movement of the vent assemblies, and by ascertaining free movement when lifted with the applicable force shown below.
Door 1.
Adjacent to Crane Wall Liftin Force Less than or equal to 37 '
lbs.
2.
Paired with Door Adjacent to Crane Wall Less than or equal to 33.8 lbs.
3.
Adjacent to Containment Wall Less than or equal to 31,8 lbs.
4.
Paired with Door Adjacent to Containment Wall Less than or equal to 31.0 lbs.
COOK NUCLEAR PLANT - UNIT 1 3/4 6-31 AMENDMENT NO.
CONTAINMENT SYSTEMS SURVEILLANCE RE UIREMENTS Continued shall be constituted of one basket each from Radial Rows 1, 2, 4, 6,
8 and 9 (or from the same row of an adjacent bay if a basket from a designated row cannot be obtained for weighing) within each bay. If any basket is found to contain less than 1220 pounds of ice, a representative sample of 20 additional baskets from the same bay shall be weighed.
The minimum average weight of ice from the 20 additional baskets and the discrepant basket shall not be less than 1220 pounds/basket at a 95% level of confidence.
The ice condenser shall also be subdivided into 3 groups of
- baskets, as follows:
Group 1 - bays 1 through 8, Group 2 - bays 9 through 16, and Group 3 - bays 17 through 24.
The minimum average ice weight of the sample baskets from Radial Rows 1, 2, 4,
6, 8 and 9 in each group shall not be less than 1220 pounds/basket at a 95% level of confidence.
The minimum total ice condenser ice weight at a 95t level of confidence shall be calculated using all ice basket weights determined during this weighing program and shall not be less than 2,371,450 pounds.
3.
Verifying, by a visual inspection of at least two flow passages per ice condenser bay, that the accumulation of frost or ice on the top deck floor gr'ating, on the intermediate deck and on flow passages between ice baskets and past lattice frames is restricted to a nominal thickness of 3/8 inches.
If one flow passage per bay is found to have an accumulation of frost or ice greater than this thickness, a representative sample of 20 additional flow passages from the same bay shall be visually inspected. If these additional flow passages are found acceptable, the surveillance program may proceed considering the single deficiency as unique and acceptable.
More than one restricted flow passage per bay is evidence of abnormal degradation of the ice condenser.
c.
At least once per 18 months by verifying, by a visual inspection, of
, each ice condenser bay, that the accumulation of frost or ice on the lower plenum support structures and turning vanes is restricted to a nominal thickness of 3/8 inches.
An accumulation of frost or ice greater than this thickness is evidence of abnormal degradation of the ice condenser.
d.
At least once per 40 months by lifting and visually inspecting the accessible portions of at least two ice baskets from each 1/3 of the ice condenser and verifying that the ice baskets are free of detrimental structural wear, cracks, corrosion or other damage.
The ice baskets shall be raised at least 12 feet for this inspection.
COOK NUCLEAR PLANT - UNIT 2 3/4 6-36 AMENDMENT NO.
CONTAINMENT SYSTEMS ICE CONDENSER DOORS LIMITING CONDITION FOR OPERATION 3,6.5.3 The ice condenser inlet doors, intermediate deck doors, and top deck doors shall be closed and OPERABLE.
APPLICABILITY:
MODES 1, 2, 3 and 4.
ACTION:
With one or more ice condenser doors open or otherwise inoperable, POWER OPERATION may continue for up to 14 days provided the ice bed temperature is monitored at least once per 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> and the maximum ice bed temperature is maintained less than or equal to 27 F; otherwise, restore the doors to their 0
closed positions or OPERABLE status (as applicable) within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
SURVEILLANCE RE UIREMENTS 4.6.5.3.1 Inlet Doors - Ice condenser inlet doors shall be:
a.
Continuously monitored and determined closed by the inlet door position monitoring system, and b.
Demonstrated OPERABLE during shutdown at least once per 18 months by:
1.
Verifying that the torque required to initially open each door is less than or equal to 675 inch pounds',
Verifying that opening of each door is not impaired by ice, frost or debris.
3.
Testing each one of the doors and verifying that the torque
- f required to open each door is less than 195 inch-pounds when the door is 40 degrees open.
This torque is defined as the "door opening torque" and is equal to the nominal door torque plus a
t frictional torque component.
COOK NUCLEAR PLANT - UNIT 2 3/4 6-39 AMENDMENT NO.
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