ML20237B624

Proposed Tech Specs 4.6.5.1.b.2 & 4.6.5.1b.3 Relating to Ice Condenser Ice Bed Changing Portion of Surveillances Pertaining to Lower Inlet Plenum Support Structures & Turning Vanes from 9-month Frequency to 18-month Frequency

ML20237B624
Person / Time
Site:	Mcguire, Catawba, McGuire
Issue date:	08/14/1998
From:	DUKE POWER CO.
To:
Shared Package
ML20237B618	List: ML20237B616 ML20237B624
References
NUDOCS 9808190114
Download: ML20237B624 (54)

Text

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ATTACHMENT la REVISED CURRENT TECHNICAL SPECIFICATIONS PAGES FOR CATAWBA UNIT 1 I

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l 9808190114 990014 PDR ADOCK 05000369 P

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CONTAINMENT SYSTEMS.

3/4.6.5 ICE CONDENSER 1

ICE BED LIMITING CONDITION FOR OPERATION 3.6.5.1 The ice bed shall be OPERABLE with:

a.

The stored ice having a boron concentration of at least 1800 ppm boron as sodium tetraborate and a pH of 9.0 to 9.5, b.

Flow channels through the ice condenser, c.

A maximum ice bed temperature of less than or equal to 27'F, d.

A total ice weight of at least 2,475,252 pounds at a 95% level of confidence, and e.

1944 ice baskets.

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTION:

)

With the ice bed inoperable, restore the ice bed to OPERABLE status 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 SHUT-DOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SURVEILLANCE REQUIREMENTS 4.6.5.1 The ice condenser shall be detennined OPERABLE:

a.

At least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> by using the Ice Bed Temperature Monitor-ing System to verify that the maximum ice bed temperature is less than or equal to 27*F, b.

At least once per 9 months by:

1)

Chemical analyses which verify that at least nine representative samples of stored ice have a boron concentration of at least 1800 ppm as sodium tetraborate and a pH of 9.0 to 9.5 at 25'C; and j

Verifying, by a visual inspection of at least two flow passages [g l

2) per ice condenser bay, that the accumulation of frost or ice on l

flow passages between ice baskets, past lattice frames,fthrough the top deck floor grating / prpaft Ahy 14er iylgtplpn/n 9

/upp0ft l

I CATAWBA - UNIT 1 3/4 6-33 Amendment No.

CONTAINMENT SYSTEMS SURVEILLANCE RE0UIREMENTS (Continued) ft/@)A//s/apd/torvipg/@pe/ is restricted to a thickness of less l

than or equal to 0.38 inch. If one flow 3assage per bay is found to have an accumulation of frost or ice wit 1 a thickness of greater than or equal to 0.38 inch, 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:

Weighing a representative sample of at least 144 ice baskets and

)#WRT-verifying that each basket contains at least 1273 lbs of ice. The representative sample shall include six baskets from each of the 24 ice condenser bays and 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 1273 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 1273 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 sam)1e baskets from Radial Rows 1, 2, 4, 6, 8, and 9 in each group s1all not be less than 1273 pounds / basket at a 95% level of confidence.

The minimum total ice condenser ice weight at a 95% level of confidence shall be calculated using all ice basket weights determined during this weighing program and shall not be less than 2,475,252. pounds.

d.

At least once per 40 months by lifting and visually inspecting the accessible portions of at least two ice baskets from each' one-third of the ice condenser and verifying that the ice baskats are free of detrimental structural wear, cracks, corrosion or other damage. The ice baskets shall be raised at least 12 feet for this inspection.

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1 CATAWBA - UNIT 1 3/4 6-34 Amendment No.

INSERT

1) Verifying, for the lower inlet plenum support structures and turning vanes only, by visual inspection, accumulation of ice or frost on structural members comprising flow channels through the ice condenser is less than or equal to 0.38 inch thick.

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4 ATTACHMENT lb REVISED CURRENT TECHNICAL SPECIFICATIONS PAGES FOR CATAWBA UNIT 2 l

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' ' ^ ^ ~ - - - -

l CONTAINMENT SYSTEMS 3/4.6.5 ICE CONDENSER ICE BED LIMITING CONDITION FOR OPERATION l

3.6.5.1 The ice bed shall be OPERABLE with:

a.

The stored ice having a boron concentration of at least 1800 ppm i

l boron as sodium tetraborate and a pH of 9.0 to 9.5, i

b.

Flow channels through the ice condenser, l

c.

A maximum ice bed temperature of less than or equal to 27*F, 3

d.

A total ice weight of at least 2,475,252 pounds at a 95% level of

(

i confidence, and

(

e.

1944 ice baskets.

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APPLICABILITY: MODES 1, 2, 3, and 4.

l ACTION:

With the ice bed inoperable, restore the ice bed to OPERABLE status 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 SHUT-DOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SURVEILLANCE REQUIREMENTS 4.6.5.1 The ice condenser shall be determined OPERABLE:

a.

At least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> by using the Ice Bed Temperature Monitor-ing System to verify that the maximum ice bed temperature is less than or equal to 27"F, b.

At least once per 9 months by:

1)

Chemical analyses which verify that at least nine representative 1

samples of stored ice have a boron concentration of at least i

1800 ppm as sodium tetraborate..and a pH of 9.0 to 9.5 at 25*C; I

and 2)

Verifying, by a visual inspection of at least two flow passages M per ice condenser bay, that the accumulation of frost or ice on; i

flow passages between ice baskets, past lattice frames,(through i

the top deck floor gratingpr/pfsf tAe/1/w/r/ir/lef fifnh/

IMf'lt i

i CATAWBA - UNIT 2 3/4 6-33 Amendment No.

CONTAINMENT SYSTEMS l

SURVEILLANCE REQUIREMENTS (Continued) i ftg@ft/s/piti/ fuf(iiig Agq6f is restricted to a thickness of less l

than or equal to 0.38 inch. If one flow 3assage per bay is found to have an accumulation of frost or ice wit 1 a thickness of greater than or equal to 0.38 inch, 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 1

of abnormal degradation of the ice condenser.

c.

At least once per 18 months by:

i Weighing a representative sample of at least 144 ice baskets and j

l verifying that each basket contains at least 1273 lbs of ice. The l

representative sample shall include six baskets from each of the 24 l

ice condenser bays and shall be constituted of one basket each from i

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 1273 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 1273 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 1273 pounds / basket at a 95% level of confidence.

The minimum total ice condenser ice weight at a 95% level of confidence shall be calculated using all ice basket weights determined during this weighing program and shall not be less than 2,475,252 pounds.

d.

At least once per 40 months by lifting and visually inspecting the accessible portions of at least two ice baskets from each one-third 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.

CATAWBA - UNIT 2 3/4 6-34 Amendment No.

INSERT

1) Verifying, for the lower inlet plenum support structures and turning vanes only, by visual inspection, accumulation of ice or frost on structural members comprising flow channels through the ice condenser is less than or equal to 0.38 inch thick.

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ATTACIIMENT 1c REVISED CURRENT TECHNICAL SPECIFICATIONS PAGES FOR MCGUIRE UNIT 1 l

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I

CONTAINMENT SYSTEMS SURVEILLANCE RE0UIREMENTS (Continued)

I basket each from Radial Rows 1, 2, 4, 6, 8, and 9 (or from l

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 1081 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 1081 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 mini-mum 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 I

1081 pounds / basket at a 95% level of confidence.

The minimum total ice condenser ice weight at a 95% level of confidence shall be calculated using all ice basket weights determined during this weighing program and shall not be less than 2,099,790 pounds; and 3)

Verifying, by a visual inspection of at least two flow passagesM i

per ice condenser bay, that the accumulation of frost or ice on flow passages between ice baskets, past lattice frames,fthrough the intermediate and top deck floor grating /pr/pAft/thdfoMr

%fef p1ghin/ sppb(rf f,t/rdg'tyrps 6

to a thickness of less than or /abd/tpr4hgr /4 f/ is restricted equal to 0.38 inch.

If one flow passage per bay is found to have an accumulation of frost or ice with a thickness of greater than or equal to 0.38 inch, a 1

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 accept-able. More than one restricted flow passage per bay is evidence of abnormal degradation of the ice condenser.

c.

At least once per 40 months by lifting and visually inspecting the accessible portions of at least two ice baskets from each one-third 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.

A.

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,4 ATTACHMENT Id ENT TECHNICAL SPECIFICATIONS PAGES FOR MCGUIRE UNIT 2 I

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CONTAINMENT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) l 1 basket each from Radial Rows 1, 2, 4, 6, 8, and 9 (or from j

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 1081 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 1081 pounds / basket at a 95% level of confidence.

The ice condenser shall also be subdivided into 3 groups of l

baskets, as follows: Group 1 - Bays 1 through 8. Group 2 -

Bays 9 through 16, and Group 3 - Bays 17 through 24. The mini-mum 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 1081 pounds / basket at a 95% level of confidence.

The minimum total ice condenser ice weight at a 95% level of confidence shall be calculated using all ice basket weights determined during this weighing program and shall not be less than 2,099,790 pounds; and 3)

Verifying, by a visual inspection of at least two flow passages per ice condenser bay, that the accumulation of frost or ice o

]

flow passages between ice baskets, past lattice frames,fthrough the intermediate and top deck floor grating /hf/p/syt/i( A6/e/

to a thickness of less than or (equal to 0.38 inch.$19 /R Ar/uh/sf;If t fl If one flow

)

passage per bay is found to have an accumulation of frost or ice with a thickness of greater than or equal to 0.38 inch, 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 accept-able. More than one restricted flow passage per bay is evidence of abnormal degradation of the ice condenser.

c.

At least once per 40 months by lifting and visually inspecting the accessible portions of at least two ice baskets from each one-third 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.

h.

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Ameno. ment No. %

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CONTAINMENT SYSTEMS' M3/4.6 5 ICE CONDENSER

~ ICE BED

-LIMITING CONDITION FOR OPERATION' i

'3 6 5 1~The> ice'bsd shall be OPERABLE with:

-The' stored ice having'a boron concentration of,at least 1800-ppm

a.

-boron as sodium. tetraborate and a.-pH of 9.0 to 9.5,

b.. Flow channels ~ through the i_ce condenser,

^

c.

A maximum ice. bed temperature of :less than or ' equal to 27'F,

d.. A total ~ ice' keight 'of. at:1 east 2,475,252-pounds at' a 95% level of confidence, and-1 e; 11944iice baskets.

'. APPLICABILITY: MODES'1, 2, 3,'and 4.

ACTION:.

With the. ice bed inoperable, restore the i'ce bed to OPERABLE status within 48

= hours'.or-be in at least HOT' STANDBY within the next 6~ hours and in COLD. SHUT-DOWN within the:following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SURVEILLANCE REQUIREMENTS - 4.6.5.1 The ice' condenser shall be determined OPERABLE:

= a.; [At:least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> by using' th' e' Ice Bed Temperature Monitor -

ing-System to verify that the. maximum ice bed ~ temperature is less 3

than' or, equal to 27'F,

b. c At'.-least.once per. 9' months ' byi L

1)L Chemical analyses 'which. verify that' at least nine representative 1

samples of stored. ice have a boron concentration of at~1 east-h ~

1800 ppmas sodium tetraborate and a pH of 9.0 to 9.5 at 25'C;

_ o and j

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2)' Verifying, by a visual inspection of.at'leastitwo flow passages j

per ice condenser bay, that :the accumulation 'of frost or. ice-on.

flow passages between ice' baskets, past lattice frames, and

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.through the top deck floor grating is' restricted to a thickness r,

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CATAWBA.-10 NIT >1L 3/46-33 Amendment No.

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. =__ - -- _ _ _____ - ___ _ _ - __ - - - - _ -

CONTAINMENT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) of less than or equal to 0.38 inch. If one flow passage per bay is found to have an accumulation of frost or ice with a thickness of greater than or equal to 0.38 inch, 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 defi-ciency as unique and acceptable. More than one restricted flow passage per bay is evidence of obnormal degradation of the ice condenser.

c.

At least once per 18 months by:

1). Verifying, for the lower inlet plenum support structures and turning vanes only, by a visual inspection, accumulation of ice or frost on structural members comprising flow channels through the ice

{

condenser is less than or equal to 0.38 inch thick.

2) Weighing a. representative sample of at least 144 ice baskets and-verifying that each basket contains at least 1273 lbs of ice. The representative sample shall include six baskets from each of the 24 ice condenser bays and 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 1273 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 1273 pounds / basket at a 95% level of confidence.

The ice condenser shall also be subdisided 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 1273 pounds / basket at a 95% level of confidence.

The minimum total ice condenser ice weight at a 95% level of

)

confidence shall be calculated using all ice basket weights determined during this weighing program and shall not be less than 2,475,252 pounds.

d.

At least once per 40 months by lifting and visually inspecting the accessible portions of at least two ice baskets from each one-third 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.

1 CATAWBA - UNIT 1 3/4 6-34 Amendment No.

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ATTACHMENT 2b 3

REPRINTED C'URRENT TECHNICAL SPECIFICATIONS PAGES FOR CATAWBA UNIT 2

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CONT INMENT SYSTEMSD 3/4.6.5 ICE CONDEESf8 l

ICE BED LIMITING CONDITION-FOR OPERATION 3.6.5.1 The ice bed shall~be OPERABLE with:

a.

-The. stored ice having a boron concentration of at least.1800 ppm -

boron as sodium tetraborate and a pH of 9.0 to.9.5, 11 b.-

Flow channels through the ice condenser, c.

A maximum ice bed temperature of less' than or equal to 27 F, d.

A total. ice weight of at least 2,475,252 pounds at a 95% level of confidence, and

{

e.

1944 ice baskets.

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTION:-

With th'e ice' bed inoperable, restore the ice. bed to OPERABLE status 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 SHUT-y DOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

' SURVEILLANCE' REQUIREMENTS 4.6.5.1 The ice condenser shall be determined OPERABLE:

a.

.At least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> by using the Ice Bed Temperature Monitor-

ing System to verify that the maximum ice bed temperature is less than or equal to 27'F, b.

At least once per 9. months by:

1)

Chemical analyses which verify that at least nine representative samples of stored ice have a boron concentration of at least 1800 ppm as sodium tetraborate and a pH of 9.0 to 9.5 at 25 C; and

2).. Verifying, by a visual inspection of at least two flow passages per ice condenser bay, that the accumulation of frost or ice on flow passages between ice baskets, past lattice frames, and through the top deck floor grating is restricted to a thickness CATAWBA - UNIT'2 3/46-33 Amendment No.

J _____--_

CONTAINMENT SYSTEMS SURVEILLANCE RE0UTREMENTS (Continued) of less than or equal to 0.38 inch. If one flow passage per bay is found to have an accumulation of frost or ice with a thickness of greater than or equal to 0.38 inch, a representative sample of 20 additionai 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 defi-ciency 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:

\\

1)

Verifying, for the lower inlet plenum support structures and i

turning vanes only, by a visual inspection, accumulation of ice or I

frost on structural members comprising flow channels through the ice condenser is less than or equal to 0.38 inch thick.

2) Weighing a representative sample of at least 144 ice baskets and verifying that each basket contains at least 1273 lbs of ice. The 1

representative sample shall include six baskets from each of the 24 ice condenser bays and 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 1273 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 1273 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 1273 pounds / basket at a 95% level of confidence.

The minimum total ice condenser ice weight at a 95% level of confidence shall be calculated using all ice basket weights determined during this weighing program and shall not be less than 2,475,252 pounds.

d.

At least once per 40 months by lifting and visually inspecting the accessible portions of at least two ice baskets from each one-third of the ice condenser and verifying that the ice baskets are free of l

detrimental structural wear, cracks, corrosion or other damage. The ice baskets shall be raised at least 12 feet for this inspection.

l CATAWBA - UNIT 2 3/46-34 Amendment No.

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ATTACHMENT 2c

, REPRINTED CURRENT' TECHNICAL' SPECIFICATIONS PAGES FOR MCGUIRE UNIT 1

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CONTAINMENT SYSTEMS SURVEILLANCE RE0UIREMENTS (Continued) i 1 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 1081 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 1031 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 mini-mum 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 1081 pounds / basket at a 95% level of confidence.

I The minimum total ice condenser ice weight at a 95% level of confidence shall be calculated using all ice basket weights determined during this weighing program and shall not be less than 2,099,790 pounds; and 3)

Verifying, by a visual inspection of at least two flow passages per ice condenser bay, that the accumulation of frost or ice on flow passages between ice baskets, past lattice frames, and through the intermediate and top deck floor grating is restricted to a thickness of less than or equal to 0.38 inch.

If one flow passage per bay is found to have an accumulation of frost or ice with a thickness of greater than or equal to 0.38 inch, 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 40 months by lifting and visually inspecting the accessible portions of at least two ice baskets from each one-third 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.

d.

• For the lower inlet plenum support structures and turning vanes only, at least once per 18 months, verify, by visual inspection, accumulation of ice or frost on structural members comprising flow channels through.the ice condenser is less than or equal to 0.38 j

. inch thick.

• Not applicable until after an outage of sufficient duration to perform surveillance subsequent to August 12, 1998.

McGUIRE - UNIT 1 3/4 6-21 Amendment No.

0 0

l ATTACHMENT 2d REPRINTED CURRENT TECHNICAL SPECIFICATIONS PAGES FOR MCGUIRE UNIT 2 1

CONTAINMENT SYSTEMS SURVEILLANCE RE0VIREMENTS (Continued)

I 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 108) 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 additic %1 baskets and the discrepant basket shall not be less than 1081 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 mini-mum 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 1081 pounds / basket at a 95% level of confidence.

The minimum total ice condenser ice weight at a 95% level of confidence shall be calculated using all ice basket weights determined during this weighing program and shall not be less than 2,099,790 pounds; and 3)

Verifying, by a visual inspection of at least two flow passages per ice condenser bay, that the accumulation of frost or ice on flow passages between ice baskets, past lattice frames, and through the intermediate and top deck floor grating is restricted to a thickness of less than or equal to 0.38 inch.

If one flow passage per bay is found to have an accumulation of frost or ice with a thickness of greater than or equal to 0.38 inch, 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 40 months by lifting and visually inspecting the accessible portions of at least two ice baskets from each one-third of the ice condenser and verifying that the ice baskets are free of l

detrimental structural wear, cracks, corrosion, or other damage. The i

ice baskets shall be raised at least 12 feet for this inspection.

d.

• For the lower inlet plenum support structures and turning vanes on'y, at least once per 18 months, verify, by visual inspection, accumulation of ice or frost on structural memoers comprising flow channels through the ice condenser is less than or equal to 0.38 inch thick.

• Not applicable until after an outage of sufficient duration to perform surveillance subsequent to August 12, 1998, i

McGUIRE - UNIT 2 3/46-21 Amendment No.

\\

l l

l l

ATTACHMENT 3a REVISED IMPROVED "ECHNICAL SPECIFICATIONS SUBMITTAL DOCUMENTATION FOZ CATAWBA l

Ice Bed 3.6.12 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.6.12.2 Verify, by visual inspection, accumulation of ice or frost 9 months for on structural members comprising flow channels through structural the ice condenser is s 0.38 inch thick.

members other than the lower inlet plenum l

support structures l

and turning vanes l

AND 18 months for the lower inlet plenum support structures and turning vanes SR 3.6.12.3 Verify by chemical analyses of at least nine 18 months representative samples of stored ice:

a.

Boron concentration is 2 1800 ppm; and b.

pH is 2 0 and s 9.5.

9 SR 3.6.12.4 Verify total weight of stored ice is 2,330,856 lb by:

18 months 2

a.

Weighing a representative sample of 2144 ice baskets and verifying each basket contains 2 1199 lb of ice; and b.

Calculating total weight of stored ice, at a 95%

confidence level, using all ice basket weights determined in SR 3.6.12.4.a.

(continued)

Catawba Units 1 and 2 3.6.12-2 Amendment No.

)

+-

I.'

Ico Bed B 3.6.12 BASES SURVEILLANCE SR 3.6.12.1 (continued).

REQUIREMENTS temperature condition. This SR may be. satisfied by use of the Ice Bed Temperature Monitoring System.

SR 3.6.12.2 This SR ensures thatLthe flow channels through the ice condenser have not accumulated an excessive amount of ice or frost blockage. The visual. inspection must be made for two or more-flow channels per ice condenser bay and must include the.following specific locations along the flow channel:

a.

Past the lower inlet plenum support structures and turning vanes; b.

Between ice baskets; c.

Past lattice frames; d.

Through the intermediate floor grating; and e.

Through the top deck floor grating.

The allowable 0.38 inch thick buildup of frost or. ice is based on the analysis of containment response to a DBA with partial blockage of the ice condenser flow passages.

If a flow channel in a given bay is found to-have an accumulation-of frost or ice > 0.38 inch thick, a representative sample of 20 additional flow channels from the same bay must be j

visually inspected.

If these additional flow channels are all found to be acceptable, the discrepant flow' channel may be considered single, unique, and acceptable deficiency. More than one discrepant flow channel in a bay is not acceptable, however.

These requirements are based on the sensitivity of the aartial blockage analysis to additional blockage. The requency of 9 months for structural members other than the L

lower inlet plenum support structures and ttrning vanes was

~

based on ice storage tests and the allowance built into the required ice mass over and above the mass assumed in the safety analyses. The 18 month Frequency for the lower inlet plenum support structures and turning vanes is based on the need to perform this Surveillance during the conditions that '

exist during a plant outage. These areas are access restricted due to ALARA considerations during plant operation.

(continued) i Catawba Units 1 and 2 B 3.6-79 8/12/98 l

l i.

q

SP0lkedhDN 3.4.);

g, g CONTAINENT SYSTEMS

(

ITILAC5 ICYCUNQ l

j;(i./g;ICEBED

( msefka raunfitne sef opsaiRTitap 4 c.O 3.6 he ice bed shall be OPERABL with:

l

[a, : ~ The stored ice aving a boron concentr tion of at least 1800 pm boron as sod tetraborate and a pH f 9.0 to 9.5, b.

Flow chan is through the ice co enser, c.

A maxi m ice bed temperature f less than or equal 27'F,

.d.

A tal ice weight of at i s pounds a a 950 level of nfidence, and j

_ ['

1944 ice baskets.

p 330,ff"

' APPLICABILITY: MODES 1, 2, 3, and 4.

ACTION:

,c Agfkyt A With the ice hed inoperable, restore the ice bed to OpFRARf r'statut within 48

~

hogr&for be in at least HOT dim uuT 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 SHUT-

cffog)'

DOWN within the foilowing 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.'

l -

SURVEILLANCE REQUIREMENTS V

M The ice condenser shall be determined OPERABLE:

g*f

• jp, {. @ @At le'ast once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> 6FEsiffi the Ice BetTemperatWMonitor)//

A,5ystenf3) verify that the maximum ice bed temperature is less tnan or equal to 27'F,

~

@ dt least once per 9 months Q[Acgjot/* M M s

Whemical analyses which verify that at least nine representative H

l

.545.6473 samples of stored ice have a boron concentration of at ppm @ tefriborallpand a pH of 9.0 to 9.5 3g*,jp, Q h Verifyina. by a visual inspection 6T as reast 1mr-fTowdssaadD Jet. 4fcondans6r bib that the accumulation o" "rost 'or iceg pssages pet ice peu

, past la pte Frases a5D M ow ah the top M afloor g is restticta( to a thickness M

l fMrd/ nifaddF5 rM l

J; &

CM9pftst}'t! Slow c.}seAntWNf9Mf_'

Yht /Ct. CYdMW t/$D f; E

CATAWBA - UNIT.1 3/46-33

' Amendment No.

b/cehe. Asnesiderit/ Qaresf kW ge/97 yvieene Amedaed Reyed atM 9)ehr s

t 4'

ge /of A

~

5p n tce % 3 4./a o

o CONTAINMENT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

Yk of less than or_ eoual to 0.38 inch /[f one flo passage per bay 7 Tound to haire an accu ation of frost or ic with a thicknes of

[ greater than or equ to 0.38 inch, a rep entative sample 20 additional flow sages from the same y shall be visual inspected. If ese additional flow p sages are found a eptable.

g'jg the surveil ce program may proce considering the si le deft-ciency as nique and acceptable. ore than one restri ed flow er bay is evidence of bnormal degradation the ice

@ passage nd e r._

@ At least once per 18 months by:

g34'g Verifying, for the lower inlet plenum support structures and urning vanes only, by a visual inspection, accumulation of ice or k

frost on structural members comprising flow channels throug.. the ice condenser is less than or equal to 0.38 inch thick.

/M f

h Weighing a representative sample of at leas 1

ce bask s and verifyina that each basket contains at least-5 lbs of ice Th Sk3.4.l M *4

% resentative sample hall includ six paskets ir eacn of the 24 ice condenser bays d shall be stituted o.' o basket each fro Radial Rows 1, 2,

, 6, 8, and (or from the me row of an adja nt bay if a basket rom a design ed row cannot e obtained for j

wei hi with each bay.

any basket is ound to contain 1 s f

g j/f9 an po ds of ice, representative ample of 20 additi nal baske s ro the same ba shall be weigh. The minimum ave ge weight of ce from the 0 addit nal ba ets and the discr pant basket all not be ss than po ds/ basket at a 955-level of confi nee. _

g s4 s./<./.t.S 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(17/3) pounds / basket at a 95% level of confidence.

g -p The minimum total ice condenser ice weight at a 95% 1evel of 9 4 5*/,./.? Y g c nfidence shall be calculated using all ice basket weichts _

determined durinn thh weighing progran1End shall not be less than I

s g 5. 4.)2, */

(Ej]hdQounds[ -3yygQ g d.

At least nnee oer ao mnngs ($7~3ft'ing and) visually inspect @

I

~

dil6 sitIT~e DDrt4ths of4t>easm two ice Daskets from each hir M//

)

SR5*4./M prAhe iWcondensetand verifying that the ice baskets ar@e me i

det imental structural wear. cracks. corrosion or other damag e

i 4d

$2 /eflu)%t rny cS-knyS

'a k%ts shall be raj,seH at least 12 pdf for this,Ahspection.

l f

l I

CATAWBA - UNIT 1 3/4 6-34 Amendment No.

k bi'ense Ansedsienf Qad kl,ed stNu

%k Lic'ense. Amedeent 'bjued 2ded 9hFkF faf chf 4 L_______

Specife'afk M./q

,3 [,,

CONTAINMENT' SYSTEMS d7[.Eh-TCE CONOLTIQ 3.4,/.Q ICE BED (CIM1MMTONDII40ft1tR OPIRATIOM Lcg 3.6 he ice bed shall be OPERAB r.

The stored ice ha ng a boron concentration of at 'least 18 a

boron as sodium etraborate and a pH of

.0 to 9.5, b.

Flow channe through the ice conden r,

c.

A maxim ice bed temperature of ss than or equal to 27',

al ice weight of at leas (fM]52ounds at a 9 4 level of d.

A 2

nfidence, and T

330 8flo) h 1944 ice baskets.

/

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTION:

A cfth /)

With the ice bed inoperable, restore the ice bed to OPFRARl r <tatus 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'5TANDBY wTthin 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 SHUT-AM$n 8 within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SURVEILLANCE REOUTREMENTS The ice condenser shall be determined OPERABLE:

$ At least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> @yje51nytne IS(BedJt'iiiperaWre Joefit$o_r3j 4/p 54 5. 4./2. /

LttFJystem GP verify that the maximum ice pea temperature is less i

than or equal to 27'F,

^

g (At least once per 9 months b b to jk/' /P st

/

54 3././s. 3.

$ vfCTemical analyses which verify that at least nine representative samples of stored ice have a boron concentration of at least 1800 ppm gs sop tf.traoorotoand a pH of 9.0 to 9.5 #C'EPC and g jy 5] 3,(p. /J.Q -

verifvina. by a. visual inspection Mtwo gnatag er heTondesser ba3 that the accumulation of f rost or Icy ffTow p ages betwee34te baskets, st latti trames, Aff tep t a thickness M

h the top desY floor grat is restr stimauu/ ine4,, > (thr o

CfAft'sssy (jpg ClldAnelv thttqk He A'e cuiuser i

CATAWBA - UNIT 2 3/46-33 Amendment No.

Y f /C !!se k)fl

1. Mb Hl'sf bl Y

Z

-k-k betAst ATMA letitt Nefaest bakd e}4/99 I

p9e/fA e

o

Snn/ka/tk S.4./q y

CONTAINMENT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

Yk of less than or eaual to 0.38 inchltf ' e flow passage pergay D ffoundtohaveana umulation of fros or ice with a thic ess of L

greater than or ual to 0.38 inch, representative sa le of 20 additional f1 passages from the ame bay shall be v ually inspected.

.these additional ow passages are f nd acceptabl,

/A/Y the surv lance program may oceed considering e single de ciency s unique and accept

e. More than one estricted f1 pass e per bay is eviden of abnormal degra tion of the ce (c

enser.

$ ' At least once per 18 months by:

5f.M./J.2($9. Verifying, for the lower inlet plenum support structures and Q

Turning vanes only, by a visual inspection, accumulation of ice or frost on structural members comprising ficw channels through the ice condenser is'less than or equal to 0.38 inch thick.

p Weighing a representative sample of at lea 44 1 e baskets and crifyina that each basket contains at least 1bs of ice

$ / f 3,(,./2 8/.(

representative sample 11 include six bas s from eacn o he 24 ice condenser bays a. shall be constitut of one basket ach from

. Radial Rows 1, 2, 4 6, 8, and C (or fr the same row o an adjace bay if a basket f a designated row annot be obtain for w

hi with each bay. If any b ket is found to contain les an po ds of ice, a repre tative sample of 0 additio 1 jp baskens r the same bay shal e weighed. The imum avera e weight o ice from the 20 ad tional baskets an the discre nt basket all not be les. t n @ ounds/ bas t at a 95% evel of onft nce. _

g 5 4 3'0'M 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 ows 1, 2, 4, 6, 8, and 9 in each group shall not be less than pounds / basket at a 95% level of

- confidence.

j9 4

The minimum total ice condenser ice weight at a 95% level of 3 # 3'0* /2' Y'b confidence shall be calculated using all ice basket weights det ed during this weighing program and shall not be less than 47 ounds. /4 334PQ $

st 3.4.l.2.t} p At_least once per 40 monthsq!LIMt1ng ally inspect 6 '3e) 44/p screseitiTe DQr44 tins of &t Jeap two Ice baskets from each gn3.am rS

(

543.4./.24 tif* 1ces.ondensgliand verifying that the ice baskets.are tree detrimental structural wear, cracks, corrosion or other damage he Qff Daskytr shall by raiseo oi p i k Teep rDr thisjftsppetion Tesm:Hal gny Al QF 4

. CATAWBA - UNIT 2 3/46-34 Amendment No.

l'

[

% Likense. Amen / send aesi iklaf

+ltlft H Oc'ene Amen'aul aea' 2 drA W/1/98 l

lSO h

)

g.

Ice Bed r tre Lon Ar3 SURVEILLMICE REQUIRDerIS (continued)

SURVEILLMICE FREQUDCf SR 3.6.

Verify total weight of stored ice is ths 1 az.ra.euun Ib by:

f:

l f7 a.

Wei i ar resentative sample of i

=1 ba ets and verifying each h basket contains a G lbd4~-

/

]

and b.

Calculati tote wei of I

I 7 ice, at a confidence level, using d

all ice basket weights determined in i

SR 3.6.

a.

SR 3.6.

Verify azimuthal distribution of ice at a months

)

95% confidence level by subdividi weights, as determined by SR 3.6.

into the following groups:

1 a.

Group 1-bays 1 through 8:

i 1

b.

Group 2-bays 9 through 16; and c.

Group 3-bays 17 through 24.

The average ice weight of the sample baskets in each 2, 4, 6, 8, and group from radial rows 1.

)

shall be SR 3.6.

Verify, by visuc1 inspection, accumulation 9 months'

-MT)

O-l of ice or frost on structural members comprising flow channels th the ice condenser is s X0.38b inch thi k.

O i

(continued) 40G-STS-3.6-54 Rev 1, 04/07/95 NaaNU-i

1. p e. w w w m m e r u r a T {8{1 T

INSERT-

'for~' structural members other than the lower inlet plenum support structures and turning vanes-AND 18 ~ months.for the.10wer inlet plenum support ; structures and turning vanes 1

i a

l Y

o i

l l

I l

J 2

INSERT Page 3,6-54 l

' lAlAWbA.

l

}

a Nb hik A

PNG M oWy i

Ice Bed erTra Enn11rns(r3 t

B 3.6.g i

BASES i

g I

SURVEILLANCE SR 3.6.

REQUIREMENTS (continued)

This SR ensures that the azimuthal distribution of ice is-reasonably uniform, by verifying that the average ice weight in each of tnree azimuthal groups of ice condenser bays is @ 4 within the limit. The Frequency of 6 was based on i

ice storage tests and the allowance built into the required

)

ice mass over and above the mass assuned in the safety Operatin

)

analyses.

b month Frequency, g experience has verified that, with the the weight requirements are maintained with no significant degradation between surveillance.

SR 3.6.

This SR ensures that the flow channels through,the ice condenser have not accumulated an excessive amount of ice or frost blockage. The visual inspection must be made for two or more flow channels per ice condenser bay and must irclude the following specific locations along the flow channel:

Past the lower inlet plenum support structures and a.

turning vanes; b.

Between ice baskets:

c.

Past lattice frames; d.

Through the intermediate floor grating; and Through the top deck floor grating.

e.

The allowablef0.381. inch thick buildup of frost or ice is based on the analysis of containment response to a DBA with partial blockage of the ice condenser flow passages. If a flow channel in a given bay is found to have an accumtdation of frost or ice > X0.388 inch t. hick, a representative sample of 20 additional flow channels from the same bay must be visually inspected.

If these additional flow channels are all found to be acceptable, the discrepant flow channel may be considered single, unique, and acceptable deficiency. More than one discrepent flow channel in a bay is not acceptable, however.

These requirements are based on the sensitivity of the partial blockage analysis to additional blockage. The (continued)

C STS-B 3.6-157 Rev 1, 04/07/95 MW kt-

/

t 1

i o

o Ice Bed QceDandeocery &

B3.6.Q g

84SES SURVEILLANCE SR 3.6.

4 (continued)

IWf REQUIREMENTS Frequency of 9 month as based on ice storage tests and the allowance built into the required ice mass over and abo the mass assuned in the safety analyses.

gggy SR 3.6.

Verifying the chemical composition of the stored ice ensures that the stored ice has a boron concentration of at least 41804) as sodium tetraborate and a hig pH, 2 )(9.01and 4 49.5 in order to meet the requirement or borated water i

f

,C i i inc melted ice is used in the ECCS recirculation mode of operation. Sodium tetraborate has been proven effective in maintaining the boron content for long storage periods, and it also enhances the ability of the solution to remove and retain fission product iodine. The high is required to enhance the effectiveness of the ice and t melted ice in removing iodine from the containment atmosphere. This pH range also minimizes the occurrence of chloride and caustic stress corrosion on mechanical systems and conponents

$7ET -

exposed to ECCS and Containment Sp ystem fluids in the circulation moh nf nneration.

recuency of monthsjwas eloped considering the facts:

^

a.

Long term ce storace tests have eterinined that the s

ud on chemica composition of the sto d ice is extremely s g

stab 1 b.

O ating experience has d nstrated that meeting

$f ron concentration and p requirements has never n

problem; and c 'Someone would have to ter the containment to ake !

{

the sample, and, if e unit is at power, t person-would receive a ca "t" A=

_l

]

SR 3.6.

6 accessdlt. 4 This SR ensures that a representative sangling of ice *Y I

i baskets, which are relatively thin walled, perforated I

cylinders, have not been degraded by wear, cracks, corrosion, or other damage. Each ice besket must be raised at least 12 feet for this inspection. The (Frequency of (continued)

E SE B 3.6-158 Rev 1, 04/07/95 l

mmh 4 g p g a p gm aa.g u T b A T D.-

a

N Y

_E INSERT:1 m

s...for structural > members, other than' theflower inlet plenum support structures and' turning vanes....

1 INSERT 2 i

t

The.18 month Frequency for.the ' lower inlet plenum support structures 'and turning vanes.is based on the n_eed to perform this Surveillance. during the' conditions that exist _ during a plant outage. These -areas. are access 4

restricted due to. ALARA considerations during plant operation.

l s

a o

1 l

L i

1 1

i i

s

. 4 i

INSERT Page B 3.6-158-(ghtLUhA.

rl' f-

.t" G

__-___--_.___:-=___

i ATTACHMENT 3c' REVISED IMPROVED TECHNICAL SPECIFICATIONS SUBMITTAL-DOCUMENTATION FOR MCGUIRE u

1 I

i i:

1 l

lu_________.

ics Bad I

3.6.12 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE (REQUENCY S'R 3.6.12.4 ---------------------- --NOTE---------

This SR is not applicable to the lower inlet plenum support structures and turning vanes until after a unit outage of sufficient duration to perform the SR subsequent to August 12,1998.

Verify, by visual inspection, accumulation of ice or frost 9 months for on structural members comprising flow channels through structural the ice condenser is s 0.38 inch thick.

members other than the lower inlet plenum support structures and turning vanes L

AND i

18 months for the lower inlet plenum support structures l

and turning vanes SR 3.6.12.5 Verify by chemical analyses of at least nine 18 months i

representative samples of stored ice:

a.

Boron concentration is 21800 ppm; and l-b.

pH is 2 9.0 and s 9.5.

k i'

i SR 3.6.12.6 Visually inspect, for detrimental structural wear, cracks, 40 months corrosion, or other damage, two ice baskets from each azimuthal group of bays. See SR 3.6.12.3.

I McGuire Units 1 and 2 3.6.12-3 Amendment No.

I Ice Bed

.o B 3.6.12 BASES 1

i i

' SURVEILLANCE

'SR 3.6.12.4 (continued)

REQUIREMENTS of frost.or ice > 0.38 inch th_ick, a representative sample of 20 additional flow channels from the same bay must be visually inspected.

If these'additionel flow' channels are all found to be.

acceptable, the discrepant flow channel may be considered single, unique, and acceptable deficiency. More than one i

discrepant flow channel in a bay is not acceptable, however.

These requirements are based on the sensitivity of the

{

partial blockage analysis to additional blockage.

The j

Frequency of'9 months for structural members other than the lower inlet plenum support structures and turning vanes was based on ice storage tests and the allowance built into the

- required ice mass over and above the mass assumed in the

. safety analyses.

The 18 month Frequency for the lower inlet j

plenum support structures and turning vanes is based on the

)

need to perform this Surveillance during the conditions that exist'during a plant outage. These areas are access restricted due to ALARA consid? rations during plant j

operation.

The SR is modified by a Note that indicates the Surveillance for.the lower inlet plenum support structures and turning vanes is not applicable until after a' unit outage of sufficient duration to perform the Surveillance subsequent to August 12, 1998.

SR 3.6.12.5 Verifying the chemical composition of the stored ice ensures that the stored ice has a boron concentration of at least 1800 ppm as sodium tetraborate and a high pH, :t 9.0 and s 9.5 at 20*C, in order to meet the requirement for borated water when the melted ice is used in the ECCS recirculation mode of operation.

Sodium tetraborate has been proven effective in maintaining the boron content.for long storage periods, and it also enhances the ability of the solution to remove and retain fission product iodine. The high pH is required to enhance the effectiveness of the ice and the melted ice in removing iodine from the containment atmosphere..-This pH range also minimizes the occurrence of chloride and caustic stress corrosion on mechanical systems

[

and components exposed to ECCS and Containment Spray System h

(continued) l McGuire Units.1 and 2 B 3.6-82 8/12/98 L_______-

i Ice Bed B 3.6.12 BASES.

SURVEILLANCE SR 3.6.12.5 (continued)

REQUIREMENTS fluids in the recirculation mode of operation. The Frequency of 18 months was developed considering these facts:

a.

Long term ice storage tests have determined that the chemical composition of the stored ice is extremely stable; b.

Operating experience has demonstrated that meeting the boron concentration and DH requirements has never been a problem; and c.

Someone would have to enter the containment to take the sample, and, if the unit is at power, that person would receive a radiation dose.

SR 3.6.12.6 This SR ensures that a representative sampling of accessible portions of ice baskets, which are relatively thin walled, perforated cylinders, have not been degraded by wear, cracks, corrosion, or other damage.

Each ice basket must be raised at least 12 feet for this inspection.

The Frequency of 40 months for a visual inspection of the structural soundness of the ice baskets is based on engineering judgment and considers such factors as the thickness of the basket walls relative to corrosion rates expected in their service environment and the results of the long term ice storage testing.

REFERENCES 1.

UFSAR, Section 6.2.

4 l

2.

10 CFR 50, Appendix K.

3.

10 CFR 50.36, Technical Specifications, (c)(2)(ii).

= = = =.,

.=:

.====m

= - - -

==

.==

j l

i

[

McGuire Units 1 and 2 B 3.6-83 8/12/98 l

1 L_--------

i CONTAINMENT SYSTEMS i

SURVEILLANCE REQUIREMENTS (Continued)

)

1 basket each fro adial Rows 1, 2, 4, 6

, and 9 (or M the same row of n adjacent bay if a ba et from a design d

row cannot b btained for weighing) thin each bay. I any

// /'/

basket is und to contain less tha 1081 pounds of ic, a represe tive sample of 20 addit nal baskets from t same bay s 11 be weighed. The mini m average weight of ice from th 0 additional baskets an he discrepant baske shall not less than 1081 pounds /b et at a 95% level o confidenct S S 3./,, /2 3 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 mini-mum 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 1081 pounds / basket at a 95% level of confidence.

The minimum total ice condenser ice weight at a 95% level of S R 3 4./.p.fa.f_

confidence shall be calculated using all _ ice basket weights

_ determined during this weighing progra vand shall not be less 543.4./2._2 than z,099,/vu poune,; ano 54 S.G./2.g h

Verifying, by a visual inspection gilt aMtwo J.Vw passaggD er ice co nser Day M hat the accumulation of frost or Ice on brucYwM/ memftes low pa ges between e Daskets, attice Tra p, an^

Ob} yth/

4/ w c St#4t/s I g

thro the inte ate and too d floor gratipJ.i r

ricted to aTThickness of less than or eaual to D.38 ine gM4

,g flf one flow passa per bay is found to hav an accumulat' ion of hdraser $

r frost or ice wi a thickness of greater an or equal to 0.38 44/Y inch, a repre ntative sample of 20 ad tional flow passages from the s bay shall be visually spected. If these 3

addition flow passages are found cceptable, the surv lance

'progra y proceed considering e single deficiency unique and ceptable. More than one estricted flow passa per bay i is vidence of abnormal degradation of the ice con nse At least once per 40 months #El.14tTna adh visually inspec@

54 f.4,/2 4 c.

QcceJs+tfTe porjons of St-itpt tw3 ice baskets from each ent,,wirdj QL me-Tce puser anpverifying that the ice baskets are free M

uf,g$W detrimental structural wear, cracks, corrosion, or other dama e

O Mr.

.)

O_ce oprets snat i oe rayeea at leastyTeet forpfs inspec

• For the lower inlet plenum support structures and turning vanes s#54,/2 4 only, at least once per 18 months, verify, by visual inspection, accumulation of ice or frost on structural members comprising flow g,

channels through the ice condenser is less than or equal to 0.38 inch thick.

b'g pote to

• Not applicable until after an outage of sufficient duration to perform M S.6, /M surveillance subsequent to August 12, 1998.

McGUIRE - UNIT 1 3/46-21 Amendment No, b/CCAsc j & g d w e,$ & 2 / f f 4

[

l

+

CONTAINMENT SYSTEPS SURVEILLANCE REQUIREMENTS-(Continued 1 Ilbasketeachfr Radial Rows 1, 2, 4, 8, and 9 (or from '

the same row an adjacent bay if a b et from a designat row cannot obtained for weighing ithin each bay. If ny M /I basket i ound to contain less t n 1081 pounds of ic a

repres ative sample of 20 add) ional baskets from e same bay all be weighed. The m 1 mum average weight ice from.

J. th 20 additional baskets d the discrepant bas tshallnot-)

L) less than 1081 pounds asket at a 95% level f confidence.f 5 4 s.6 12.~5 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 mini-mum 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 1081 pounds / basket at a 95% level of confidence.

The minimum total ice cundenser ice weight at a 95% level of S f 3.4.12 2.1 confidence shall be calculated using all ice basket _weiohts detemined during this weighing progray ana shall not be less 5 4 3._tr./.2. 4 than 2,099,ivu pounas; ano Sg g.4,f g.y h Verifying, by a visual inspection dffMt twn fhW~paFraggD rper ica cpnGenser D that the accumulation of frost or ice on flor getages bet en ice pas m s, past sattjee trames n

/).)

$-[rnefv4ral efd88Mrk,.7 thr'J9h the int diete aWtor deck flovgratin f

g,9 ffg} g p/,g>

g"strictedt thickness of less than or equal to 0.38 inch.

cf4aAcle VAre f I one flow passag er Day is founo ro nov en accumulation of' l

f oost or ice wit a thickness of grester an or equal to 0.

th tec can

$J

' ich a repre tative sample of 20 ad ional flow passage

~

fAJy

' rom,the sa bay shall be visually spected. If these additiona flow passages are foun acceptable, the sury 11ance progra y proceed considering e single deficiency s unique and ceptable.- More than on restricted flow pass e per bayj s vidence of abnormal de dation of the ice con nser.

Sg

.ii'. 4. /I. /,

h At 1&ast once per 40 monthsdy_lMtthe ah visually inspect @

&ctnesTDie nor4 tons of#icase twp ice baskets from each esarr 4/y 4 7smufAg A1ce3.emfe.aser alftbverifytng that the ice baskets are. free greap of Jup detrimental structural war, cracks, corrosion, or other dama The a

Qce baskgMr'shall be raised >t"least 12 feet fqp this inspection.

S R 6* (.. /2 ' 4/

• F r the lower inlet plenum sup ort structures and turning vanes only, at least once per 18 mont s. verify, by visual inspection, accumulation of ice or frost on structural members comprising flow channels through the ice condenser is less than or equal to 0.38 inch thick.

/).)

gpfe, to

[*Notapplicableuntilafteranoutageofsufficientdurationtoperform g gjg (, surveillance subsequent to August 12, 1998.

L McGUIRE - UNIT 2 3/4 6-21 Amendment No.

i

(./CCitse Amedmal yud 2tM gnh pay Aof cR r

1 g

C

,m kv)

Ice Bed Gee 96ndendD 3.6.g SURVEILLANCE PE0UIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.6.

2 Verify total weight of stored ice is 9 months 2,u.u i mul ib by:

Q Weighing a representative sample of a.

2 144 ice baskets and verifying each ket contains a lb o ice; g

b.

Calculating total weight of stored ice, at a 95% confidence level, using all ice basket weights determined in SR 3.6.

2.a.

SR 3.6.

3 Verify azimuthal distribution of ice at a 9 months 95% confidence level by subdividi weights, at determined by SR 3.6.

.2.a.

into the following groups:

k a.

Group 1-bays 1 through 8:

.fm J

(,

b.

Group 2-bays 9 through 16; and c.

Group 3-bays 17 through 24.

The average ice weight of the sample baskets in each roup from radial rows 1,

2. 4, 6, 8. and shall be a lb.

g

/tj@dLT *a.]

s[p.

f it SR 3.6.9.4 4 Verify, by visual inspection. accumulation 9 months

1. AT b of ice or frost on structural members comprising flow channels through the ice condenser is s (0.38K inch thick.

g (continued) 1 1

4dOB-373 3.6-54 Rev 1, 04/07/95 Mc hunL SfM!N-O]

p,,,,e weer ** -

/

INSERT 1 S

for structural members other than the lower inlet plenum support structures and turning vanes AND 18 months for the lower inlet plenum support structures and turning l

vanes t

INSERT 2 5

____________----------------------NOTE----------------------------------

This SR is not applicable to the lower inlet plenum support structures and turning vanes until after a unit outage of sufficient duration to perform the SR subsequent to August 12, 1998.

i i

l INSERT Page 3.6-54 l

1

)

4 Me Guin o

i l

l LL

-__-__________o

^f b\\ f0fL

(~1 l& on\\

v 1

Ice Bed He* wndanteel B 3.6.

BASES m

SURVEILLANCE SR 3.6.

REQUIREMENTS (continued)

This SR ensures that the azimuthal distribution of ice is reasonably uniform, by verifying that the average ice weight in each of three azimuthal groups of ice condenser bays is within the limit. The Frequency of 9 months was based on ice storage tests and the allowance built into the required ice mass over and above the mass assmed in the safety analyses. Operatin 9 month Frequency, g experience has verified that, with the the weight requirements are maintained with no significant degradation between surveillance.

SR 3.6. 0 This SR ensures that the flow channels through the ice condenser have not accumulated an excessive amount of ice or frost blockage. The visual inspection must be made for two

)

or more flow channels per ice condenser bay and must include the following specific locations along the flow channel:

a.

Past the lower inlet plenum support structures and turning vanes; b.

Between ice basketsi j

c.

Past lattice frames:

d.

Through the intermediate floor grating; and e.

Through the top deck floor grating.

The allowable 10.36) inch thick buildup of frost or ice is based on the analysis of containment response to a DBA with partial blockage of the ice condenser flow passages. If a flowchannelinak0.381inchthick,arepresentativesamle h iven bay is found to have an accumulation of frost or ice >

of 20 additional flow channels from the same bay must be visually inspected.

i I

If these additional flow enannels are all found to be acceptable, the discrepant flow channel may be considered single, unioue, and acceptable deficiency. More than one discrepant flow channel in a bay is not acceptable, however, These requirements are based on the sensitivity of the partial blockage analysis to additiorial blockage. The (continued)

-60G-SIS.

B 3.6-157 Rev 1, 04/07/95 i

MC(Turk f\\

a L

i i

I

)

v Ice Bed CIce fonunwa 83.6.g BASES SURVEILLANCE SR 3.6.

(continued) ppge&T1)

REQUIREMENTS g

frequency of 9 months as based on ice storage tests and the T

allowance built into the required ice mass over and above the mass assuned in the safety analyses. Qgjggy 1,}

(/4e*T 3b Os, 3R 3.6.8.5 Verifying the chemical composition of the stored ice ensures that the stored ice has a boron concentration of at least 11800% ppm as sodium tetraborate and a high pH, a 49.0F and %

l G N.h c 49.5Liin order to meet the requirement for borated water wnen the melted ice is used in the ECCS recirculation mode of operation. Sodium tetraborate has been proven effective in maintaining the boron content for long storage periods, I

and it also enhances the ability of the solution to remove and retain fission product iodine. The high pH is required to enhance the effectiveness of the ice and the melted ice in removing iodine from the containment atmosphere. This pH range also minimizes the occurrence of chloride and caustic stress corrosion on mechanical systems and components o

exposed to ECCS and Containment Spray System fluids in the (d'

h p,{reci culation mode of operation.18hmonths was developed considering these fa 1

a.

Long term ice storage tests have determined that the chemical composition of the stored ice is extremely

_ stable; b.

Operating experience has demonstrated that meeting the boren concentration and pH requirements has never been a problem; and c.

Someone wotid have to enter the containment to take

]

the sar;le, and, if the unit is at power, that person I

l would receive a radiation dose, j

0lb Q

SR 3.6. 9.6 acc.ess,%

This SR ensures that a representative samlin of ice baskets, which are relatively thin walled, perforated cylinders, have not been degraded by wear, cracks, corrosion, or other damage. Each ice basket must be raised

[

at least 12 feet for this inspection. The frequency of (continued)

-Wee-SQ B 3.6-158 Rev 1, 04/07/95 me N

(V yll

.,y. ucsaue Ana**'" DM" 1

l L

L j

INSERT 1 h 1

1 1

...for structural members other than the lower inlet plenum support structures I

and. turning vanes....-

1.

I I

I INSERT 2-.p.

1 t

LThe 18.monthj Frequency for the lower inlet plenum support structures and.

I turning vanes is based on the need to perform this Surveillance during the.

I conditions that exist during a plant outage. These areas are access l-restricted due to ALARA considerations during plant operation.

I i

l l

INSERT 3 @

1 i

i The SR is modified by a Note that indicates the Surveillance for the. lower i

inlet plenum support structures and turning vanes is not applicable until I

after a. unit outage of sufficient duration to perform the Surveillance I

- subsequent to-August 12, 1998.

I

?

l i d INSERT Page B 3.6-158

'McGuire.

i t

C L__ ___._

-,---r,.--,-,,,--rr.,r.-,

r.---.-- -. -,,. - -- - - -, - - - --,- -. -. - -, - -. -. - - - - - -, - -,

-,-----,,---,-----,-----,-,----,--,--,,------,-,-.--,--,---.-,.--,---,-,,,,-.-.------,-.--..-.y,.

- -, - -,-., - - - ----m

~ '

-p.

ATTACHMENT 4 DESCRIPTION'OF PROPOSED-CHANGES AND TECHNICAL JUSTIFICATION-I

Description of Proposed Changes Technical Specification (TS) Surveillance Requirements (SRs) 4.6.5.lb.2 for Catawba and 4.6.5.lb.3 for McGuire state (McGuire-specific wording is in boldface type):

"The ice condenser shall be determined OPERABLE at least once per 9 months by verifying, by a visual inspection of at least two flow passages per ice condenser bay, that the 1

accumulation of frost or ice on flow passages between ice baskets, past lattice frames, through the intermediate and top deck floor grating, or past the lower inlet plenum support structures and turning vanes is restricted to a thickness of less than or equal to 0.38 inch.

If one flow passage per bay is found to have an accumulation of frost or ice with a thickness of greater than or equal to 0.38 inch, 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."

Catawba and McGuire are proposing to change that portion of the above SRs which pertains to the lower inlet plenum support structures and turning vanes from a 9-month 5

frequency to an 18-month frequency.

In addition, McGuire has included a footnote in conjunction with its revised surveillance to indicate that the surveillance is not applicable until after an outage of sufficient duration to perform the surveillance subsequent to August 12, 1998.

This footnote is necessary because NRC approval of this amendment request is expected prior to entry into the next refueling outages at McGuire, and the surveillance cannot be performed until the units are in an outage.

Technical Justification The ice condenser's primary function is the absorption of thermal energy released abruptly in the event of a loss of coolant accident, for the purpose of limiting the initial l

peak pressure in the containment.

A secondary function of the ice condenser is the further absorption of energy after the initial incident, causing the containment pressure to be l

reduced to and held at a lower level for a period of time.

The sodium tetraborate solution produced by a partial meltdown of the ice absorbs and retains iodine released during the accident and serves as a heat transfer medium and i

neutron poison for cooling the reactor core following the postulated incident.

The main part of the ice condenser is a mass of sodium tetraborate ice stored in an annular chamber inside the containment shell.

The ice is maintained in an array of vertical cylindrical columns.

The columns are formed by perforated metal baskets.

The baskets are assembled into a lattice framework to form a continuous column of ice.

The l

ice condenser is contained in the annulus formed by the containment vessel wall and the crane wall circumferentially over a 300 degree arc.

Three sets of insulated doors are located, respectively, along the lower crane wall, in the intermediate deck, and in the top deck.

If lower containment compartment pressure exceeds upper containment compartment pressure by more than one pound per square foot as the result of an accident, the lower inlet doors will swing open and allow the evolved steam to flow into the ice condenser.

The direction of steam flow is changed 90 degrees by turning vanes.

The steam will condense on the ice and chilled structures, but air will pass through the ice bed and open the intermediate and top deck doors, venting to the upper compartment and compressing the containment atmosphere.

The lower inlet doors are spring loaded to assure. flow uniformity, while the intermediate and upper doors are held closed by gravity only.

During the accident, sodium tetraborate solution mixed with condensed steam will leave the compartment via the doors and floor drains.

The solution will drain into the containment sump, where it will be available for residual core heat removal.

Iodine released during the accident will be dissolved and retained in the melted sodium tetraborate solution.

This proposed amendment is acceptable because the Catawba and McGuire ice condensers remain fully capable of performing their design function in the event of an accident condition.

SR 4.6.5.1b.2 (Catawba) and 4.6.5.lb.3 (McGuire) cannot be performed for the lower inlet plenum support structures and turning vanes with the units at power, due to the high dose rates present in the lower ice condenser.

Nevertheless, they are still capable of fulfilling their design safety-related function.

Any ice buildup is removed from the lower inlet plenum support structures and turning vanes during refueling outages.

In addition, operating experience has shown that an 18-month frequency for these SRs is acceptable.

Ice does not build up on the flow passages in the vicinity of the lower inlet plenum support structures and turning vanes such that it would impede flow

l during-an accident.

NRC approval of this amendment request will not result in any unavailability of the ice condensers at Catawba or McGuire.

I

l,.

l l

l l

l ATTACHMENT 5 NO SIGNIFICANT HAZARDS CONSIDERATION DETERMINATION 1

1 I

• O No Significant Hazards Consideration Determination The following discussion is a summary of the evaluation of the changes contained in this proposed amendment against the 10 CFR 50.92(c) requirements to demonstrate that all three standards are satisfied.

A no significant hazards consideration is indicated if operation of the facility in I

accordance with the proposed amendment would not:

1.

Involve a significant increase in the probability or consequences of an accident previously evaluated, or l

2.

Create the possibility of a new or different kind of accident from any accident previously evaluated, or 3.

Involve a significant reduction in a margin of safety.

First Standard Implementation of this amendment would not involve a significant increase in the probability or consequences of an accident previously evaluated.

Approval of this amendment will have no significant effect on accident probabilities or consequences.

The ice condenser is not an accident initiating system; therefore, there will be no impact on any accident probabilities by the approval of this amendment.

Each unit's ice condenser is currently fully capable of meeting its design basis accident mitigating function.

Therefore, there will be no impact on any accident consequences.

Second Standard Implementation of this amendment.vould not create the possibility of a new or different kind of accident from any accident previously evaluated.

No new accident causal mechanisms are created as a result of NRC approval of this amendment request.

No changes are being made to the plant which will introduce any new accident causal mechanisms.

j This amendment request does net impact any plant systems that are accident initiators, since the ice condenser is an accident mitigating system.

Third Standard Implementation of this amendment would not involve a significant reduction in a margin of safety.

Margin of safety is related to the confidence in the ability of the fission product barriers to perform their design functions during and following an accident situation.

These barriers j

a include the fuel cladding, the reactor coolant system, and the containment system.

The performance of these fission product barriers will not be impacted by implementation of this proposed amendment.

The ice condenser for each unit is already capable of performing as designed.

Operating experience has shown that the performance of the ice condenser would not be adversely impacted by extending the frequency of these SRs to an 18-month interval.

No safety margins will be impacted.

Based upon the preceding analysis, Duke Energy has concluded that the proposed amendment does not involve a significant hazards consideration.

i l

1

_.______q i

9 t*

ehr j

1 I

1 ATTACHMENT 6 ENVIRONMENTAL ANALYSIS i

l

s'

.g Environmental Analysis Pursuant to 10 CFR 51.22(b), an evaluation of this license amendment request has been performed to determine whether or not it meets the criteria for categorical exclusion set forth in 10 CFR 51.22 (c) (9) of the regulations.

This amendment to the Catawba and McGuire Unit 1 and 2 TS I

. changes the frequency of SR 4.6.5.1b.2 (Catawba) and 4.6.5.lb.3 (McGuire) from 9 months to 18 months.

This will allow the SRs to be performed while the respective units are shut down.

Implementation of this amendment will have no adverse impact upon the Catawba or McGuire units; neither will it contribute to any additional quantity or type of effluent being available for adverse environmental impact or personnel exposure.

i It has been determined there is:

1.

No significant hazards consideration, 2.

No significant change in the types, or significant increase in the amounts, of any effluents that may be released offsite, and 3.

No significant increase in individual or cumulative occupational radiation exposures involved.

Therefore, this amendment to the Catawba and McGuire TS meets the criteria of 10 CFR 51.22 (c) (9) for categorical exclusion from an environmental impact statement.

l l