LIC-03-0063, Fire Modeling Analysis - Fire Area 32

Fire Modeling Analysis - Fire Area 32

ML031210563
Person / Time
Site:	Fort Calhoun
Issue date:	04/25/2003
From:	Ridenoure R Omaha Public Power District
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
LIC-03-0063
Download: ML031210563 (37)

Text

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Omaha Public Power Distnct 444 South 16th Street Mall Omaha NE 68102-2247 April 25, 2003 LIC-03-0063 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Reference:

1.

Docket No. 50-285

2.

Letter from OPPD (R. T. Ridenoure) to NRC (Document Control Desk)

Dated November 8, 2002 (LIC-02-0118)

SUBJECT:

Omaha Public Power District (OPPD) Fire Modeling Analysis - Fire Area 32 As discussed on April 22, 2003, in a telephone conversation between G. R. Cavanaugh of the Fort Calhoun Station (FCS) and A. B. Wang of the Nuclear Regulatory Commission (NRC),

OPPD is submitting the following sections from a technical analysis for Fire Area 32 for the FCS docket: Section 3 - Fire Scenarios, Section 5 - References, and Attachment B - Fire Modeling Worksheets. No commitments are made to the NRC in this letter.

Sincerely, Enclosure c:

E. W. Merschoff, NRC Regional Administrator, Region IV (w/o Enclosure)

A. B. Wang, NRC Project Manager (w/o enclosure)

J. G. Kramer, NRC Senior Resident Inspector (w/o enclosure)

Winston & Strawn (w/o enclosure)

Acoc5(o Employment with Equal Opportunity

Fire IPEEE Tier 2 Documentation Scenario No. FA32, Revision 2 SECTION 3 FIRE SCENARIOS A bounding fire in this compartment would involve postulated failure of the systems identified above.

This fire would result in unacceptable results.

Therefore, fire modeling was performed to refine the analysis as discussed below.

In the discussions below, no differentiation is made between sections of a cable tray. Therefore, if a tray is partially within the fire zone of influence, all associated trays are assumed damaged.

1-Steam Driven AFW Pumn FW-I0 - Larue Fire AFWpump FW-10 large oilfire.

18% conditionalprobability of la rg e spill Unconflned spill results in hig h heat rate, but 1O secondfire duration not credible.

Assumedfire duration is 2.5 minutes.

Adjust spill surface area to obtain 2.5 minute duration fire.

A postulated 'large' auxiliary feedwater pump fire is assumed to occur with a conditional probability of 0. 18. The fire was characterized as a spill of the entire oil inventory from the pump, 5.5 gallons. This fire has the potential to damage cable trays located directly above.

The FIVE Inside Plume worksheet (Attachment B, Sheet "FW-10 Large - In-Plume") was used to determine whether target damage occurs. This situation was further evaluated using the Outside Plume and Radiant Exposure worksheets (Attachment B, Sheets "FW-10 Large-Out-Plume" and "FW-10 Large - Radiant", respectively).

Using the FIVE methodology, an unconfined large spill involving 5.5 gallons of oil would cover 660 sq.ft. and have a fire duration of 10 seconds. However, a credible fire event would require some time to ignite the oil spill, would involve a fire growth phase, then continued combustion until available fuel is depleted.

Such a fire can be expected to bum for several minutes. For the purposes of the Fire Risk Analysis, it will be conservatively assumed that the minimum credible fire duration is 2.5 minutes. This 2.5 minute assumption is based on several parameters as discussed below.

In order to provide realistic results, the analysis considers a confined oil spill so that the fire duration can be extended. The selection of a 2.5 minute minimum fire duration is based on the following considerations.

I. A short fire duration is conservative.

However, the 10 seconds associated with an ideal unconfined spill fire is unrealistic.

2.

The Fire PRA Implementation Guide [5] indicates that ignition of IEEE 383 qualified cables would require fire exposure for 5 to 10 minutes.

3.

A realistic oil pool fire can be expected to experience some degree of oxygen depletion which would reduce the overall combustion rate (longer fire duration).

This reduction can be modeled by considering a smaller pool surface area.

4.

The cable damage times (Appendix G of [5]) range from 2 to 19 minutes for temperatures of 700 'F and higher.

Using the 2.5 minute fire duration, the resulting fire characteristics are provided in Attachment-B. Sheet "FW-l0-Large-Fuel". The postulated 5.5 gallon oil spill fire has a fire intensity of 4528 Btu/s and a surface area of 45.7 sq. ft.

A number of physical parameters for the fire compartment are needed in order to assess the response of the 'nearest' target and the automatic fire suppression system. The determination of these parameters is based on the postulated oil spill originating from FW-10.

ERIN (Engineering and Research, Inc.

6 Wb1590101-XXXX-XXXXXX

Fire IPEEE Tier 2 Documentation Scenario No. FA32, Revision 2 Trays 2S, 1 7S, and 18S potentially impacted.

Outside ofplume damage distance

- 4.8feet.

Radiant exposure damage distance

- 12 feet.

ERIN Engineenng and Research, Inc The fire is of sufficient magnitude that damage to targets in the fire plume will occur. Therefore, an outside of plume worksheet was used to evaluate the extent of damage to targets beyond the fire plume.

Height to Target = 14.5 feet - The nearest target above FW-10 is cable tray 2S, which is 14.5 feet above the floor. Other trays above FW-10 include the following: 18S at 15.5 feet high; and 17S at 16.5 feet high and 8 feet laterally.

Trays 3S, 4S, 5S, 6S, 19S, and 20S are also near FW-10. However, the 1-hour radiant barrier partially surrounding FW-10 prevents the oil spill from spreading in their direction and provides some measure of shielding from the radiant heat effects.

Room Height = 20 feet-FCS Fire Hazards Analysis [2].

Floor Dimensions = 207.8 x 27 feet - This is based on a floor area of 5,610 ft2 and an approximate room width of 27 feet near the pump.

Radial Distance to Targets = 7.6 feet - The postulated oil spill has a surface area of 45.7 ft2. This equates to a diameter of 7.6 feet for a circular spill. Since the spill can occur anywhere around the pump, a 7.6 foot radius around the pump is assumed for determining potential targets impacted.

Fire Intensity = 4,528 Btuls - the assumed fire intensity is based on the assumptions discussed earlier.

Attachment B provides a worksheet which develops this value.

Fire Location Factor = I - the fire is assumed to be in the 'center' of the room.

Ambient Temperature = 90 'F - this assumed value is used for the maximum expected ambient temperature during normal plant operations.

The outside of plume worksheet (Attachment B, Sheet "FW-10 Large - Out-Plume") predicts a radial damage distance of 4.8 feet. Therefore, if a target is located in the jet region, but more than 4.8 feet from the fire plume, target damage is not expected.

Additionally, the radiant exposure worksheet (Attachment B, Sheet "FW-10 Large - Radiant") predicts a critical radiant flux distance of 12 feet. The only critical component within this distance is FW-6, however it is separated from FW-10 by a 1-hour radiant barrier. Therefore, no additional targets are assumed to be damaged due to radiant effects.

Thins scenario was evaluatedfurther to determine the target damage time versus suppression system actuation time. Successful actuation of the suppression system prior to the predicted target damage time would prevent such damage.

The additional parameters needed for this analysis are discussed below.

7 W1590101-xxxx-xxxxxx

Fire IPEEE Tier 2 Documentation Scenario No. FA32, Revision 2 Heielit to Taret = 11.5 feet - Although the actual target height is approximately 14.5 feet, the height used in the analysis was reduced to 11.5 feet, which is the lowest height which would yield a target damage time greater than the suppression system actuation time.

Radial Distance to Tareet = 0.1 feet - The target is conservatively assumed to be located above the fire source.

Fire Location Factor (Target) = 1-The fire is assumed to be in the 'center' of the room.

Sprinklers approximately 8 feet above floor.

Targets greater than 11.5feet above the pump will not be damaged if suppression is successfuL.

Radiant Fraction = 0.40 - this value is based on guidance in FIVE [4].

Rated Detector Temperature = 165 0F-this value is based on the device setpoint

[7].

Ambient Temperature = 75 'F-The assumed ambient temperature for this case is assumed to be 75 'F. This has the effect of increasing the detector response time.

Distance to Detector = 10 feet vertical, I foot horizontal - There are two sprinkler heads located directly above AFW pump FW-IO, approximately 8 feet above the floor. Other detectors and sprinkler heads are located throughout the room. For conservatism, a vertical distance of 10 feet and a horizontal distance of 1 foot are assumed.

Fire Location Factor (Detector) = 1-the fire is assumed to be in the 'center' of the room.

This provides the most conservative result with respect to detector response.

Target Location = I (in-plume) - The targets are inside the postulated fire plume.

Target Thermal Response Parameter = 34 - This represents a nominal value for XPE/XPE cables with 0.43 inch diameter [4].

Detector Time Constant = 120 - this assumed value is based on the highest (slowest) detector in the reference tables [4].

The results of the suppression system actuation analysis are provided in Attachment B, Sheet "FW-10 Large - Suppression". Assuming a 'virtual' target 11.5 feet above the pump and inside the fire plume, the analysis conservatively predicts a cable damage time of 7 seconds and a suppression system actuation time of 6.95 seconds. The expected damage time for the actual targets, since they are located higher than 11.5 feet, would be greater than 7 seconds.

Based on this analysis, it is concluded that successful actuation of the suppression system during a postulated large oil spill fire will limit damage in this fire' compartment such that only the pump itself will be damaged.

ERIN Engineenng and Research, Inc.

8 W1590101-XXXX-XXXXXX

Fire IPEEE Tier 2 Documentation Scenario No. FA32, Revision 2 AFWpumnp FI-1W0 small oilfire.

82% conditionalprobability of small spilL Targets greater than 8.3 feet above thze pumip will not be damaged.

AFWpump FWV-6 large oilfire.

18% conditionalprobability of large spill.

Unconfined spill results in high heat rate, but 10 secondfire duration not credible.

2. Steam Driven AFW Pump FV Small Fire A postulated 'small' auxiliary feedwater pump fire is assumed to occur with a conditional probability of 0.82. The fire was characterized as a spill of 10% of the entire oil inventory, or 0.55 gallons. This spill is assumed to occur with an 82% conditional probability [5]. The characterization of such a fire is based on the same fundamental parameters as that considered for the large oil spill fire. The resulting fire has a surface area of 4.6 sq.ft., a duration of 2.5 minutes, and an intensity of 453 Btu/s.

The analysis of this postulated fire was evaluated using the FIVE worksheets for the Inside Plume and Radiant exposure cases (Attachment B, Sheets "FW-10 Small - In-Plume" and "FW-10 Small - Radiant", respectively). The completed analysis worksheets are based on the same input parameters as the FW-10 large fire. The analysis shows that targets located 8.3 feet or more above the postulated fire would not be damaged.

The radiant exposure case performed using 1 Btuls/ft2 critical flux limit yields a critical flux distance of approximately 3.8 feet. Given the 1-hour radiant shield between FW-10 and FW-6, as well as the spacing between FW-10 and the air ompressors, this heating mechanism is not a concern with respect to target damage.

Based on this analysis, a postulated small oil spill fire should be assumed to result in damage to only the pump itself.

3.

Motor Driven AFW Pumn FW-6-Large Fire A postulated 'large' auxiliary feedwater pump fire is assumed to occur with a conditional probability of 0.18. The fire was characterized as a spill of the entire oil inventory from the pump, 3.5 gallons. This fire has the potential to damage cable trays located directly above. The FIVE Inside Plume worksheet (Attachment B, Sheet "FW-6 Large - In-Plume") was used to determine whether target damage occurs. This situation was further evaluated using the Outside Plume and Radiant Exposure worksheets (Attachment B, Sheets "FW-6 Large -

Out-Plume" and "FW-6 Large - Radiant", respectively).

Using the FIVE methodology, an unconfined large spill involving 3.5 gallons of oil would cover 420 sq.ft. and have a fire duration of 10 seconds. However, a credible fire event would require some time to ignite the oil spill, would involve a fire growth phase, then continued combustion until available fuel is depleted.

Such a fire can be expected to burn for several minutes. For the purposes of the Fire Risk Analysis, it will be conservatively assumed that the minimum credible fire duration is 2.5 minutes. This 2.5 minute assumption is based on several parameters as discussed below.

ERIN Engineenng and Research, Inc.

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Fire IPEEE Tier 2 Documentation Scenario No. FA32, Revision 2 Assumedfire duration is 2.5 minutes.

Adjust spill surface area to obtain 2.5 minute duration fire.

Trays 2S, 3S, 4S, 18S, and 195 potentially impacted.

In order to provide realistic results, the analysis considers a confined oil spill so that the fire duration can be extended. The selection of a 2.5 minute minimum fire duration is based on the following considerations.

1. A short fire duration is conservative.

However, the 10 seconds associated with an ideal unconfined spill fire is unrealistic.

2.

The Fire PRA Implementation Guide [5] indicates that ignition of IEEE 383 qualified cables would require fire exposure for 5 to 10 minutes.

3.

A realistic oil pool fire can be expected to experience some degree of oxygen depletion which would reduce the overall combustion rate (longer fire duration).

This reduction can be modeled by considering a smaller pool surface area.

4.

The cable damage times (Appendix G of [5]) range from 2 to 19 minutes for temperatures of 700 0F and higher.

Using the 2.5 minute fire duration, the resulting fire characteristics are provided in Attachment B, Sheet "FW-6 Large - Fuel". The postulated 3.5 gallon oil spill fire has a fire intensity of 2882 Btu/s and a surface area of 29.1 sq. ft.

A number of physical parameters for the fire compartment are needed in order to assess the response of the 'nearest' target and the automatic fire suppression system. The determination of these parameters is based on the postulated oil spill originating from FW-6.

The fire is of sufficient magnitude that damage to targets in the fire plume will occur. Therefore, an outside of plume worksheet will be used to evaluate the extent of damage to targets beyond the fire plume.

Height to Target = 14.5 feet - The nearest target above FW-6 is cable tray 2S, which is 14.5 feet above the floor. Other trays above FW-6 include the following: 18S at 15.5 feet high; 19S at 14.5 feet high and 8 feet laterally; 3S at 18.5 feet high and 6.5 feet laterally; and 4S at 14.5 feet high and 11.5 feet laterally.

Room Heiffht = 20 feet-FCS Fire Hazards Analysis [2].

Floor Dimensions = 207.8 x 27 feet - This is based on a floor area of 5,610 ft2 and an approximate room width of 27 feet near the pump.

Radial Distance to Targets = 7.6 feet - The postulated oil spill has a surface area of 29.1 ftW. This equates to a diameter of 6.1 feet for a circular spill. Since the spill can occur anywhere around the pump, a 6.1 foot radius around the pump is assumed for determining potential targets impacted.

Fire Intensity = 2,882 Btu/s - the assumed fire intensity is based on the assumptions discussed earlier.

Attachment B provides a worksheet which develops this value.

Fire Location Factor = I - the fire is assumed to be in the 'center' of the room.

Ambient Temperature = 90 OF - this assumed value is used for the maximum expected ambient temperature during normal plant operations.

ERIN Engineering and Research, Inc 10 W1590101-XXXX-XXXXXX

Fire IPEEE Tier 2 Documentation Scenario No. FA32, Revision 2 Outside ofplume damage distance

- 2.6feet.

Radiant exposure damage distance

-9.6 feet.

Sprinklers assumed to be near ceiling.

The outside of plume worksheet (Attachment B, Sheet "FW-6 Large -

Out-Plume") predicts a radial damage distance of 2.6 feet. Therefore, if a target is located in the jet region, but more than 2.6 feet from the fire plume, target damage is not expected.

Additionally, the radiant exposure worksheet (Attachment B, Sheet "FW-6 Large

- Radiant") predicts a critical radiant flux distance of 9.6 feet. The only critical component within this distance is FW-10, however it is separated from FW-6 by a 1-hour radiant barrier. Therefore, no additional targets are assumed to be damaged due to radiant effects.

This scenario was evaluated further to determine the target damage time versus suppression system actuation time. Successful actuation of the suppression system prior to the predicted target damage time would prevent such damage.

The additional parameters needed for this analysis are discussed below.

Hei/ght to Target = 12.7 feet - Although the actual target height is approximately 14.5 feet, the height used in the analysis was reduced to 12.7 feet, which is the lowest height which would yield a target damage time greater than the suppression system actuation time.

Radial Distance to Target = 0.1 feet -The target is conservatively assumed to be located above the fire source.

Fire Location Factor (Target) = I - The fire is assumed to be in the 'center' of the room.

Radiant Fraction = 0.40 - this value is based on guidance in FIVE [4].

Rated Detector Temperature = 165 OF - this value is based on the device setpoint

[7].

Ambient Temperature = 75 'F-The assumed ambient temperature for this case is assumed to be 75 'F. This has the effect of increasing the detector response time.

Distance to Detector = 20 feet vertical, I foot horizontal - There are sprinkler heads located near the ceiling above AFW pump FW-6. Other detectors and sprinkler heads are located throughout the room.

For conservatism, a vertical distance of 20 feet and a horizontal distance of I foot are assumed.

Fire Location Factor (Detector) = I - the fire is assumed to be in the 'center' of

-the-room.-This provides the most conservative result with respect to detector response.

Target Location = 1 (in-phume) - The targets are inside the postulated fire plume.

Target Thermal Response Parameter = 34 - This represents a nominal value for XPE/XPE cables with 0.43 inch diameter [4].

ERINO Engineering and Research, Inc.

11 W1590101-xxxx-xxxxxx

Fire IPEEE Tier 2 Documentation Scenario No. FA32, Revision 2 Targets greater than 12. 7feet above the pump will not be damaged if suppression is successful.

AFWpump FW-6 small oilfire.

82% conditionalprobability of small spill.

Targets greater than 8.0 feet above tihe pump will not be damaged.

Air compressor large oilfire.

18% conditionalprobability of large spill.

ERIN" Engineering and Research, Inc.

Detector Time Constant = 120 - this assumed value is based on the highest (slowest) detector in the reference tables [4].

The results of the suppression system actuation analysis are provided in Attachment B, Sheet "FW-6 Large - Suppression". Assuming a 'virtual' target 12.7 feet above the pump and inside the fire plume, the analysis conservatively predicts a cable damage time of 26 seconds and a suppression system actuation time of 25.7 seconds. The expected damage time for the actual targets, since they are located higher than 12.7 feet, would be greater than 26 seconds.

Based on this analysis, it is concluded that successful actuation of the suppression system during a postulated large oil spill fire will limit damage in this fire compartment such that only the pump itself will be damaged.

4. MotorDrivenAFWPUMDFW-6-Small Fire A postulated 'small' auxiliary feedwater pump fire is assumed to occur with a conditional probability of 0.82. The fire was characterized as a spill of 10% of the entire oil inventory, or 2 quarts, whichever is greater. In this case, with an oil inventory of 3.5 gallons, a 2 quart spill is considered more limiting. This spill is assumed to occur with an 82% conditional probability [5]. The characterization of such a fire is based on the same fundamental parameters as that considered for the large oil spill fire. The resulting fire has a surface area of 4.2 sq.ft., a duration of 2.5 minutes, and an intensity of 412 Btu/s.

The analysis of this postulated fire was evaluated using the FIVE worksheets for the Inside Plume and Radiant exposure cases (Attachment B, Sheets "FW-6 Small

- In-Plume" and "FW-6 Small - Radiant", respectively). The completed analysis worksheets are based on the same input parameters as the FW-6 large fire. The analysis shows that targets located 8.0 feet or more above the postulated fire would not be damaged.

The radiant exposure case performed using I Btu/sfft2 critical flux limit yields a critical flux distance of approximately 3.6 feet. Given the 1-hour radiant shield between FW-6 and potential targets, this heating mechanism is not a concern with respect to target damage.

Based on this analysis, a postulated small oil spill fire should be assumed to result in damage to only the pump itself.

5.

Air Compressor Laree Fire A postulated 'large' air compressor fire is assumed to occur with a conditional probability of 0.18. The fire was characterized as a spill of the entire oil inventory from one compressor, 7 gallons. This fire has the potential to damage cable trays located directly above. The FIVE Inside Plume worksheet (Attachment B, Sheet "IA LUrge - In-Plume") was used to determine whether target damage occurs. This situation was further evaluated using the Outside Plume and Radiant Exposure worksheets (Attachment B, Sheets "IA Large -

Out-Plume" and "IA Large - Radiant", respectively). Since the compressors are expected to have similar target impacts, only one scenario is developed for all three compressors.

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Fire IPEEE Tier 2 Documentation Scenario No. FA32, Revision 2 Uncon ined spill results in high heat rate, but 10 secondfire duration not credible.

Assumnedfire duration is 2.5 minutes.

Adjust spill surface area to obtain 2.5 minute duration fire.

Trays IS, 16S, and 16S-1 potentially impacted.

ERINO Engineering and Research, Inc.

Using the FIVE methodology, an unconfined large spill involving 7 gallons of oil would cover 840 sq.ft. and have a fire duration of 10 seconds.

However, a credible fire event would require some time to ignite the oil spill, would involve a fire growth phase, then continued combustion until available fuel is depleted.

Such a fire can be expected to burn for several minutes. For the purposes of the Fire Risk Analysis, it will be conservatively assumed that the minimum credible fire duration is 2.5 minutes. This 2.5 minute assumption is based on several parameters as discussed below.

In order to provide realistic results, the analysis considers a confined oil spill so that the fire duration can be extended. The selection of a 2.5 minute minimum fire duration is based on the following considerations.

I. A short fire duration is conservative.

However, the 10 seconds associated with an ideal unconfined spill fire is unrealistic.

2. The Fire PRA Implementation Guide [5] indicates that ignition of IEEE 383 qualified cables would require fire exposure for 5 to 10 minutes.

3. A realistic oil pool fire can be expected to experience some degree of oxygen depletion which would reduce the overall combustion rate (longer fire duration).

This reduction can be modeled by considering a smaller pool surface area.

4.

The cable damage times (Appendix G of [5]) range from 2 to 19 minutes for temperatures of 700 'F and higher.

Using the 2.5 minute fire duration, the resulting fire characteristics are provided in Attachment B, Sheet "IA Large - Fuel". The postulated 7 gallon oil spill fire has a fire intensity of 5763 Btu/s and a surface area of 58.2 sq. ft.

A number of physical parameters for the fire compartment are needed in order to assess the response of the 'nearest' target and the automatic fire suppression system. The determination of these parameters is based on the postulated oil spill originating from the air compressor.

The fire is of sufficient magnitude that damage to targets in the fire plume will occur. Therefore, an outside of plume worksheet will be used to evaluate the extent of damage to targets beyond the fire plume.

Height to Target = 16.5 feet - The nearest target above the air compressors is cable tray I S, which is 16.5 feet above the floor. Other trays near the compressors include 16S (16.5 feet high, 2 feet laterally) and 16S-I (16.5 feet high, 2 feet laterally).

Room Heit-ht = 20 feet - FCS Fire Hazards Analysis [2].

Floor Dimensions = 207.8 x 27 feet - This is based on a floor area of 5,610 ft' and an approximate room width of 27 feet near the pump.

Radial Distance to Targets = 8.6 feet-The postulated oil spill has a surface area of 58.2 ft. This equates to a diameter of 8.6 feet for a circular spill. Since the spill can occur anywhere around the compressor, a 8.6 foot radius around the compressor is assumed for determining potential targets impacted.

13 W1590101-xxxx-xxxxxx

Fire IPEEE Tier 2 Documentation Scenario No. FA32, Revision 2 Outside of plume damage distance

- 6.4feet.

Radiant exposure damage distance

- 12 feet.

Sprinklers assumed to be near ceiling.

Fire Intensity = 5,763 Btu/s - the assumed fire intensity is based on the assumptions discussed earlier.

Attachment B provides a worksheet which develops this value.

Fire Location Factor = I - the fire is assumed to be in the 'center' of the room.

Ambient Temperature = 90 'F - this assumed value is used for the maximum expected ambient temperature during normal plant operations.

The outside of plume worksheet (Attachment B, Sheet "IA Large - Out-Plume")

predicts a radial damage distance of 6.4 feet. Therefore, if a target is located in the jet region, but more than 6.4 feet from the fire plume, target damage is not expected.

Additionally, the radiant exposure worksheet (Attachment B, Sheet "IA Large -

Radiant") predicts a critical radiant flux distance of 13.5 feet. Depending on the compressor which is the source of the fire, two or three of the compressors may be damaged due to radiant effects. For conservatism, all three are assumed damaged.

This scenario was evaluated further to determine the target damage time versus suppression system actuation time. Successful actuation of the suppression system prior to the predicted target damage time would prevent such damage.

The additional parameters needed for this analysis are discussed below.

Heit'ht to Tareet = 16 feet - Although the actual target height is approximately 16.5 feet, the height used in the analysis was reduced to 16 feet, which is the lowest height which would yield a target damage time greater than the suppression system actuation time.

Radial Distance to Target = 0.1 feet - The target is conservatively assumed to be located above the fire source.

Fire Location Factor (Tarket) = I - The fire is assumed to be in the 'center' of the room.

Radiant Fraction = 0.40 - this value is based on guidance in FIVE [4].

Rated Detector Temperature = 165 'F - this value is based on the device setpoint

[7].

Ambient Temperature = 75 'F - The assumed ambient temperature for this case is assumed to be 75 'F. This has the effect of increasing the detector response time.

Distance to Detector = 20 feet vertical, I foot horizontal - There are sprinkler heads located near the ceiling above AFW pump FW-6. Other detectors and sprinkler heads are located throughout the room.

For conservatism, a vertical distance of 20 feet and a horizontal distance of I foot are assumed.

(

ERIN Engineenng and Research. Inc 14 W1590101-xxcxX-xxxxxx

Fire IPEEE Tier 2 Documentation Scenario No. FA32, Revision 2 Fire Location Factor (Detector) = I - the fire is assumed to be in the 'center' of the room. This provides the most conservative result with respect to detector response.

Target Location = I (in-plume) - The targets are inside the postulated fire plume.

Tareet Thermal Response Parameter = 34 - This represents a nominal value for XPE/XPE cables with 0.43 inch diameter [4]

Detector Time Constant = 120 - this assumed value is based on the highest (slowest) detector in the reference tables [4]

The results of the suppression system actuation analysis are provided in Attachment B, Sheet "IA Large - Suppression". Assuming a 'virtual' target 16 feet above the pump and inside the fire plume, the analysis conservatively predicts a cable damage time of 16 seconds and a suppression system actuation time of 15.5 seconds. The expected damage time for the actual targets, since they are located higher than 16 feet, would be greater than 16 seconds.

Based on this analysis, it is concluded that successful actuation of the suppression system during a postulated large oil spill fire will limit damage in this fire compartment such that only the pump itself will be damaged.

6. Air Cnmnreqnr Smn11 Fire Targets greater than 11.5feet above the pump will not be damaged if suppression is successful AFWpunmp FW-10 small oilfire.

82% conditionalprobability of small spilL Targets greater than 9.1 feet above the pump will not be damaged.

A.

P A.

^

A postulated 'small' air compressor fire is assumed to occur with a conditional probability of 0.82. The fire was characterized as a spill of 10% of the entire oil inventory, or 0.7 gallons. This spill is assumed to occur with an 82% conditional probability [5].

The characterization of such a fire is based on the same fundamental parameters as that considered for the large oil spill fire. The resulting fire has a surface area of 5.8 sq.ft., a duration of 2.5 minutes, and an intensity of 576 Btu/s.

The analysis of this postulated fire was evaluated using the FIVE worksheets for the Inside Plume and Radiant exposure cases (Attachment B, Sheets "IA Small -

In-Plume" and "IA Small - Radiant", respectively).

The completed analysis worksheets are based on the same input parameters as the air compressor large fire.

The analysis shows that targets located 9.1 feet or more above the postulated fire would not be damaged.

The radiant exposure case performed using I Btu/s/ftW critical flux limit yields a critical flux distance of approximately 4.3 feet. Given the 8.6 foot spill radius, this radiant exposure distance is sufficient to potentially damage all three compressors.

Based on this analysis, a postulated small oil spill fire should be assumed toresult in damage to only the three compressors.

I

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ERIN Engineenng and Research, Inc.

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Fire IPEEE Tier 2 Documentation Scenario No. FA32, Revision 2 SECTION 5 REFERENCES

1. "Safe Shutdown Analysis," EA-FC-89-055, Rev. 3.

2.

Fire Hazards Analysis for Fort Calhoun Station, Rev. 6.

3.

Individual Plant Examination of External Events for Fort Calhoun, Enclosure to LIC 95-0130.

4.

EPRI Report TR-100370s,"Fire-Induced Vulnerability Evaluation (FIVE)", Final Report, April 1992

5.

EPRI Report TR-I 05928, "EPRI Fire PRA Implementation Guide," Final report, December 1995.

6.

Fire Compartment Close-out Strategy, Scenario No. GEN.

7.

FCS Fire PRA Fire Modeling Analysis, 0139-00534-RPT-001, Rev. 0, VECTRA.

+

ERIN Engineenng and Research. Inc.

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Fire IPEEE Tier 2 Documentation Scenario No. FA32 Attachment B Fire Modeling Worksheets ERIN Engineerng and Research, IncB B-1 W1599907-xxxx-xxxxxx

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project COMBUSTIBLE MATERIAL WORKSHEET FUEL PROPERTIES - UNCONFINED SPILL DESCRIPTION VOLUME (QUARTS)

Q22 NET-HEAT OF COMBUSTION i711 COMBUSTION EFFICIENCY UNIT HEAT RELEASE RATE m1 DENSITY FLOW CHARACTERISTICS FA32 FSMsxls FW-10 Large - Fuel DESCRIPTION SPECIFIC SPILL AREA SPILL AREA PEAK FIRE INTENSITY FIRE DURATION

1-1-"'1-"1'-_4q 660 65340 10 0.173 SQ-FT BTU/S SEC MIN 1111 I

1111 FUEL PROPERTIES - CONFINED SPILL DESCRIPTION VOLUME (QUARTS)

NET HEAT OF COMBUSTION COMBUSTION EFFICIENCY UNIT-HEAT RELEASE RATE DENSITY 22 17111 1

110 60 FLOW CHARACTERISTICS DESCRIPTION SPILL AREA PEAK FIRE INTENSITY FIRE DURATION SQ-FT F1 11501 BTU/S SEC MIN COMMENTS QUICK FIVE Version 2.1, 1995 ERIN Engineering & Research, Inc.

Page 1 of 24

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FA32 FSMs.xls FW-10 Large - In-Plume FIXED COMBUSTIBLE I TARGET IN PLUME ENGLISH UNITS VERSION 1

TARGET DAMAGE THRESHOLD TEMPERATURE F

(USE TABLE 1E FOR GUIDANCE) 2 HEIGHT OF TARGET ABOVE FIRE SOURCE ft (BASED ON SCENARIO GEOMETRY) 3 HEIGHT FROM FIRE SOURCE TO CEILING 5

ft (BASED ON SCENARIO GEOMETRY) 3a FLOOR DIMENSIONS - LENGTH 207<7.77778 ft

- WIDTH 27 ft 3b FLOOR AREA (LENGTH) X (WIDTH) 5610 ft2 3C ESTIMATED DURATION OF FIRE min 4

PEAK FIRE INTENSITY

.425 2237.4 Btufs USE TABLE 2E & FIGURES 4-5 FOR GUIDANCE) 5 FIRE LOCATION FACTOR (4 FOR CORNER, 2 FOR WALL, 1 FOR CENTER) 6 EFFECTIVE HEAT RELEASE RATE 4528.22374 Btu/s

([BQOX4] X [BOX 5])

7.

PLUMETEMPERATURE RISEATTARGET 631.51 F

(LOOK UP VALUE FROM TABLE SE) 8a MAXIMUM AMBIENT TEMPERATURE 90 F

8b CRPTICALTEMPERATURE RISE ATTARGET 610 F

([BOX 1] - MAXIMUM AMBIENTTEMPERATURE) 9 CRITICAL-PLUMETEMPERATURE RISE

-21.51 F

([BOX 8] - (BOX 71) l IFTHE ENTRY IN BOX 9 IS <= 0, STOP. OTHERWISE CONTINUE TO CALCULATE THE CRITICAL COMBUSTIBLE LOAD NEEDED TO RAISE THE AVERAGE TEMPERATURE BY THIS AMOUNT 10 QnetIV TO ACHIEVE TEMP RISE IN BOX 9 0.00 Btu/ft3 (LOOK UP VALUE FROM TABLE 7E) 11 CALCULATED ENCLOSURE VOLUME, V 0

ft3 i

([BOX 3] X FLOOR AREA OF SPACE) 12 CALCULATED CRITICAL Qnet 0

Btu

([BOX 10] X (BOXIl])

13 ESTIMATED HEAT LOSS FRACTION (REPRESENTATIVE VALUE: 0.7) 14 ESTIMATE OF CRITICAL Qtot 0

Btu

([BOX 12]/(1 - (BOX13]))

15 ESTIMATE OF ACTUAL Qtot 0

Btu

((HRR) X [TIME]) = [BOX 4] X [TIME]

IFTHE ENTRY IN BOX 15 IS LESS THAN THE VALUE IN BOX 14, CRITICAL CONDITIONS ARE NOT INDICATED FOR THE SCENARIO BEING EVALUATED. OTHERWISE, THE SCENARIO DOES NOT PASS THIS SCREENING PROCEDURE. FURTHER ANALYSIS REQUIRED.

I.

QUICK FIVE Version 2.1, 1995 ERIN Engineering & Research, Inc.

Page 2 of 24

Fire Modeiing Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FA32 FSMs xis FW-10 Large-Out-Plume FIXED COMBUSTIBLE / TARGET OUTSIDE PLUME ENGLISH UNITS VERSION 1

TARGET DAMAGE THRESHOLD TEMPERATURE (LOOK UP VALUE FROM TABLE 1E) 2 HEIGHT OF TARGET ABOVE FIRE SOURCE (BASED ON SCENARIO GEOMETRY) 3 HEIGHT FROM FIRE SOURCE TO CEILING 5O-ele -f CI-. -UL C-I-3a FLOOR DIMENSIONS - LENGTH

- WIDTH 3b FLOOR AREA [LENGTH] X [WIDTH]

3c ESTIMATED DURATION OF FIRE 4

RATIO OF TARGET HEIGHT/CEIUNG HEIGHT (fBOX21/(BOX31)

IF THE VALUE IN BOX 41 S> 0.5, COMPLETE BOXES 5-11; OTHERWISE, ENTER A VALUE OF o IN BOX 14 AND CONTINUE WTrrh PRnY I r 5

LONGITUDINAL DISTANCE FROM FIRE SOURCE TO TARGET, L ft (BASED ON SCENARIO GEOMETRY) 6 LONGITUDINAL DISTANCE TO HEIGHT RATIO, VH 0.24

([BOX s5[BOX 3])

7 ENCLOSURE WIDTH, W 27 ft (BASED ON SCENARIO GEOMETRY)

B HEIGHT TO WIDTH RATIO, H/W 0.74

([BOX 3]f[BOX 71) 9 PEAK FIRE INTENSITY i

Btu/s (USETABLE 2E FOR GUIDANCE) 10 FIRE LOCATION FACTOR a

(4 FOR CORNER, 2 FOR WALL, 1 FOR CENTER) 11 EFFECTIVE HEAT RATE RELEASE 4528.2237 Btuls

'(BOX 9] X (BOX 101) 12 PLUME TEMPERATURE RISE AT CEILING 631.51 F

(LOOK UP VALUE FROM TABLE SE) 13 CEILING JET TEMPERATURE RISE FACTOR AT TARGET (IF [BOX 4] < 0 85, ENTER 0, ELSE 0.777 LOOK UP VALUE FROM TABLE 6A OR 6B) 14 CEILINGJETTEMPERATURE RISE ATTARGET 490.56 F

([BOX 12] X [BOX 131) lSa MAXIMUM AMBIENT TEMPERATURE S

F 15b CRmTCALTEMPERA1URE RISE AT TARGET 610 F

([BOX D] - MAXIMUM AMBIENTTEMPERATURE) 16 CRITICAL - CEILING IETTEMP. RISE ATTARGET 119.44 F

([BOX IS] - [BOX 141)

IFTHE ENTRY IN BOX 16 IS <- C, STOP. OTHERWISE CONTINUE TO CALCULATE THE CRITICAL COMBUSTIBLE LOAD NEEDED TO RAISE THE AVERAGE TEMPERATURE BY THE AMOUNT INDICATED IN BOX 16 17 Qne/V TO ACHIEVE TEMP RISE IN BOX 16 1.88 Btu/ft3 (LOOK UP VALUE FROM TABLE 7E) 18 CALCULATED ENCLOSURE VOLUME, V 112,200 ft3 (t(OX 3B1 X FBOX 31) 19 CALCULATED CRITICAL Qnet 210,466 Btu

([BOX 171 X tBOX18)-

20 ESTIMATED HEAT LOSS FRACTION (RANGE 0-1) l 7

s (REPRESENTATIVEVALUE:

0.7) 21 ESTIMATE OF CRITICAL Qtot 701,554 Btu

([BOX 19]1(1

- [BOX20B))

22 ESTIMATE OF ACTUAL Qtot 679,234 Btu (BASED ON ENERGY CONTENT OF FIRE SOURCE)

IF THE ENTRY IN BOX 22 IS LESS THAN THE VALUE IN BOX 21, CRITICAL CONDITIONS ARE NOT INDICATED FOR THE SCENARIO BEING EVALUATED. OTHERWISE, THE SCENARIo DOES NOT PASS THIS SCREENING PROCEDURE. FURTHER ANALYSIS REQUIRED.

QUICK FIVE Verslon 2.1, 1995 ERIN Engineering & Research, Inc.

Page 3 of 24

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FA32 FSMs.xis FW-10 Large - Radiant FIXED COMBUSTIBLE / RADIANT EXPOSURE ENGLISH UNITS VERSION CRMCAL RADIANT FLUX TO TARGET Btu/s/ft2 (REPRESENTATIVE CONSERVATIVE VALUE = 1)

(LOOK UP VALUE FROM TABLE 1E)

PEAK FIRE INTENSITY (USE TABLE 2E FOR GUIDANCE) 040WNS.

il Btu/s

=

1=

RADIANT FRACTION OF HEAT RELEASE (REPRESENTATIVE VALUE = 0.4) 18129 Btuls-RADIANT HEAT RELEASE RATE 1811.2895 Btu/s 31)

-fl' I

ft CRITICAL RADIANT FLUX DISTANCE (LOOK UP VALUE FROM TABLE 10E).

12.01 ft ft ACTUAL DISTANCE BETWEEN SOURCE/TARGET (FROM FIRE COMPARTMENT CCDS)

I8M,.

ft IF THE EXPOSURE FIRE IS LOCATED WITHIN THIS DISTANCE (INDICATED IN BOX 5) OF THE TARGET, CRITICAL CONDiTIONS CAN OCCUR. OUTSIDE THIS RANGE, CRITICAL CONDiTIONS ARE NOT INDICATED FOR THE SCENARIO UNDER CONSIDERATION.

QUICK FIVE Version 2.1, 1995 ERIN Engineering & Research, Inc.

Page 4 of 24

Fire Modeling Analyses ERIN P oJect No. 159-9907 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FA32 FSMss FW-10 Large - SLppression SUPPRESSION THERMALLY THICK TARGETS ENGLISH UNITS VERSION TARG-INFOMAINm la HEIGHT OF TARGET ABOVE MFIRE SOURCE

f.

ft tBASED ON SCENAR1O GEOMETRY) lb RADIAL DISTANCE FROM FIRE SOURCE To TARGET s

ft UNE OF SIGHT DISTANCE FROM FIRE SOURCETOTARGET 11.5 ft 2

PEAK FIRE INTENSITY 4SR.Z.4 Btu/s FROM BASIC SCREENING METHODOLOGY 3

FIRE LOCATION FACTOR (4 FOR CORNER,2 FOR WALL, 1 FOR CENTER) 4 EFFECTIVE HEAT RELEASE RATE 4528.22374 Btu/s

[BOX 21 X [BOX 3D_

6 MAXIMUM AMBIENTTEMPERATURE

• t5 F

7 PLUME TEMPERATURE RISE ATTARGET 158831 F

QLOOK UP VALUE FROM TABLE SE) 8 RADIANT FRACTION OF HEAT RELEASE s

REPRESENTATIvE VAE 4)

.9 RADIANT HEAT RELEASE RATE 1811.2895 Buls

([BoX 2teOx el DETECTOR

'NFORMATION 1

RATED ACTUATION TEMPERATURE OF DETECTOR F

(MANUFACTURERS OAT" 2

HEIGHT FROM FIRE SOURCE TO CEIUNG

-ft:::

ft (BASED ON SCENARIO GEOEY___

3 FLOOR DIMENSION

- WIDTH ft 4

LONGITUDINAL DISTANCE FROM FIRE SOURCE TO DETECTOR, L

ft (BASED ON SCENARIO GEOMETRY)

, _5 LONGTIUDINA1.

DISTANCE TO HEIGHT RATIO, L/H 0.10

((BOX 41TBOX 21) 6 HEIGHT TO WIDTH RATIO, HPH 037

([BOX 21/tOX 31) 7 PEAK FIRE INTENSITY 4528.22374 Btu/s (USE TABLE 2E FOR GUIDANCE) 8 FIRE LOCATION FACTOR (4 FOR CORNER, 2 FOR WALL, I FOR CENTER) 9 EFFECTIVE FIRE INTENSITY 4528.22374 Btu/s

([BOX 71 X (BOX 81) 10 PLUME TEMPERATURE RISE AT CEIUNG 1600.00 F

(LOOK UP VALUE FROM TABLE SE-11 CEIUNG 9ET TEMPERATURE RISE FACTOR AT DETECTOR 1.00 (LOOK UP VALUE FROM TABLE EA OR 6B) l 12 CEUN G J TEMPE RATURE RISE AT DETECTOR 1600.00 F

TIME TO TARGET DAMAGE 1

RADIATIVE HEAT FLUx AT TARGET 1 09 Btu/s/ft2 rARLF A-2E) 2a TARGET LOCATION IN-PLUME(I); OUT-PLUME (2) 2b CONVECTVE HEAT FLX ATTARGET 10.27 Btu/s/ft2 (TABLES A-4E AND A-S) 3 TOTAL HEAT FLUX AT TARGET 1136 8tu/s/ft2 (tBOXII + IBOX2bD 4

TARGET THERMAL RESPONSE PARAMETER E

(TABLE A-7E) 5 ESTIMATED TIME TO TARGET DAMAGE 7

(TABLE A-2E) nME TO VfTCOR ArTlIATno D

DEIC I

A 6

OErrcnON DMVCE RATED TEMPERATURE RISE-YU v

7 GAS TEMPERATURE RISE AT DETECTOR 1600 F

(USE BASIC SCREENING METODOLOGY)_____

DETECTOR TEMPERATURE RISEIGASTEMPERATURE RISE 0.06

([BOX 61IBOX 71) 9 DIMENSIONLESS DETECTOR ACTUATION TIME 0.06 (TABLE A-I) 10 TIME CONSTANT OF DETECTION DEVICE 12(

S (TABLE A-E OR MFG. DATA) 11 ESTIMATED TIME TO DETECTOR ACTUATION 695 S

(_BOX 9] X (BOX 10])

ER1N Engineeruig h Research, Inc.

Page 5 of 24 OUICX FIVE Version 2.1, 1995

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FA32 FSMs.xls FW-10 Small - Fuel COMBUSTIBLE MATERIAL WORKSHEET FUEL PROPERTIES - UNCONFINED SPILL DESCRIPTION VOLUME (QUARTS)

NET HEAT OF COMBUSTION 11 COMBUSTION EFFICIENCY UNIT HEAT RELEASE RATE DENSITY FLOW CHARACTERISTICS DESCRIPTION SPECIFIC SPILL AREA 12, SPILL AREA 66 PEAK FIRE INTENSITY 653 FIRE DURATION 10 0.17 N

4 SQ-FT BTU/S SEC MIN F

UE.

EL ETS C

FUEL PROPERTIES - CONFINED SPILL DESCRIPTION VOLUME (QUARTS)

NET HEAT OF COMBUSTION COMBUSTION EFFICIENCY UNIT HEAT RELEASE RATE DENSITY 2

17111 1

110 60 FLOW CHARACTERISTICS DESCRIPTION SPILL AREA SQ-FT PEAK FIRE INTENSITY FIRE DURATION 453 11501 2.500 BTU/S SEC MIN COMMENTS I

ERIN Engineering & Research, Inc.

Page 6 of 24 QUICK FIVE Version 2.1, 1995

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FA32 FSMs.xls FW-10 Small - In-Plume FIXED COMBUSTIBLE / TARGET IN PLUME ENGLISH UNITS VERSION TARGET DAMAGE THRESHOLD TEMPERATURE9.

N2 F (USETABLE 1E FOR GUIDANCE) 2 HEIGHT OF TARGET ABOVE FIRE SOURCE l

3 ft (BASED ON SCENARIO GEOMETRY) 3 HEIGHT FROM FIRE SOURCE TO CEILING 2ft (BASED ON SCENARIO GEOMETRY) 3a FLOOR DIMENSIONS - LENGTH 2fl7777278 ft

-WIDTH 2

ft 3b FLOOR AREA (LENGTH) X (WIDTH) 5610 ft2 3c ESTIMATED DURATION OF FIRE min 4

PEAK FIRE INTENSITY Btu/s USE TABLE 2E & FIGURES 4-5 FOR GUIDANCE) 5 FIRE LOCATION FACTOR (4 FOR CORNER, 2 FOR WALL, 1 FOR CENTER) 6 EFFECTIVE HEAT RELEASE RATE 452.912776 Btu/s

_([BOX 4] X [BOX 5])

l

.7 PLUME TEMPERATURE RISE AT TARGET 589.33 F

(LOOK UP VALUE FROM TABLE 5E) 8a MAXIMUM AMBIENT TEMPERATURE F

8b CRITICALTEMPERATURE RISE ATTARGET 610 F

([BOX 1] - MAXIMUM AMBIENT TEMPERATURE) l l

9 CRITICAL - PLUME TEMPERATURE RISE 20.67 F

([BOX 8] - [BOX 7])

l IF THE ENTRY IN BOX 9 IS <= 0, STOP. OTHERWISE CONTINUE TO CALCULATE THE CRITICAL COMBUSTIBLE LOAD NEEDED TO RAISE THE AVERAGE TEMPERATURE BY THIS AMOUNT 10 Qnet/V TO ACHIEVE TEMP RISE IN BOX 9 0.35 Btu/ft3 (LOOK UP VALUE FROM TABLE 7E) 11 CALCULATED ENCLOSURE VOLUME, V 112200 ff3

([BOX 3] X FLOOR AREA OF SPACE) 12 CALCULATED CRITICAL Qnet 39,513 Btu

([BOX 10] X [BOX11])

13 ESTIMATED HEAT LOSS FRACTION (REPRESENTATIVE VALUE: 0.7) 14 ESTIMATE OF CRITICAL Qtot 131,710 Btu

([BOX 12]/(1 - [BOX13]))

15 ESTIMATE OF ACTUAL Qtot 67,937 Btu

([HRR] X [TIME]) = [BOX 4] X [TIME)

IF THE ENTRY IN BOX 15 IS LESS THAN THE VALUE IN BOX 14, CRITICAL CONDITIONS ARE NOT INDICATED FORTHE SCENARIO BEING EVALUATED. OTHERWISE, THE SCENARIO DOES NOT PASS THIS SCREENING PROCEDURE. FURTHER ANALYSIS REQUIRED.

ERIN Engineering & Research, Inc.

Page 7 of 24 QUICK FIVE Version 2.1, 1995

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FA32 FSMs.xls FW-10 Small - Radiant FIXED COMBUSTIBLE I RADIANT EXPOSURE ENGLISH UNITS VERSION 1

CRITICAL RADIANT FLUX TO TARGET Btu/s/ft2 (REPRESENTATIVE CONSERVATIVE VALUE= 1)

(LOOK UP VALUE FROM TABLE 1E) 2 PEAK FIRE INTENSITY Btu/s (USE TABLE 2E FOR GUIDANCE) 3 RADIANT FRACTION OF HEAT RELEASE Dil (REPRESENTATIVE VALUE = 0.4) 4 RADIANT HEAT RELEASE RATE 181.165111 Btu/s

([BOX2]X[BOX3])

5 CRITICAL RADIANT FLUX DISTANCE 3.80 ft (LOOK UP VALUE FROM TABLE 0E)_

6 ACTUAL DISTANCE BEIWEEN SOURCE/TARGET ft (FROM FIRE COMPARTMENT CCDS)

IF THE EXPOSURE FIRE IS LOCATED WITHIN THIS DISTANCE (INDICATED IN BOX 5) OF THE TARGET, CRITICAL CONDITIONS CAN OCCUR. OUTSIDE THIS RANGE, CRiTICAL CONDITIONS ARE NOT INDICATED FOR THE SCENARIO UNDER CONSIDERATION.

ERIN Engineering & Research, Inc.

Page 8 of 24 QUICK FIVE Version 2.1, 1995

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project COMBUSTIBLE MATERIAL WORKSHEET FUEL PROPERTIES - UNCONFINED SPILL DESCRIPTION VOLUME (QUARTS) is; NET HEAT OF COMBUSTION g7 Jel COMBUSTION EFFICIENCY 90 UNIT HEAT RELEASE RATE 110.

DENSIrTYsa FLOW CHARACTERISTICS.

FA32 FSMs.xls FW-6 Large - Fuel DESCRIPTION SPECIFIC SPILL AREA SPILL AREA PEAK FIRE INTENSITY FIRE DURATION 420 41580 0.173 SQ-FT BTU/S SEC MIN

=_-HE I.. xf..

FUEL PROPERTIES - CONFINED SPILL DESCRIPTION VOLUME (QUARTS)

NET HEAT OF COMBUSTION COMBUSTION EFFICIENCY UNIT HEAT RELEASE RATE DENSITY 14 17111 1

110 60 FLOW CHARACTERISTICS DESCRIPTION SPILL AREA PEAK FIRE INTENSITY FIRE DURATION i..1...

SQ-FT 1150I 2.500 BTU/S SEC MIN COMMENTS

,S,.sm..,,fs.

1-IssT ERIN Engineering & Research, Inc.

Page 9 of 24 QUICK FIVE Version 2.1, 1995

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FA32 FSMs.xls FW-6 Large - In-Plume FIXED COMBUSTIBLE / TARGET IN PLUME ENGLISH UNITS VERSION

• 1 TARGET DAMAGE THRESHOLD TEMPERATURE F

(USE TABLE 1E FOR GUIDANCE) 2 HEIGHT OF TARGET ABOVE FIRE SOURCE ft (BASED ON SCENARIO GEOMETRY) 3 HEIGHT FROM FIRE SOURCE TO CEILING ft (BASED ON SCENARIO GEOMETRY) 3a FLOOR DIMENSIONS - LENGTH 20-7 777778 ft

-WIDTH 2

p ft 3b FLOOR AREA (LENGTH) X (WIDTH) 5610 ft2 3C ESTIMATED DURATION OF FIRE X}2-5 min 4

PEAK FIRE INTENSITY 2882.3951 Btu/s USE TABLE 2E & FIGURES 4-5 FOR GUIDANCE) 5 FIRE LOCATION FACTOR (4 FOR CORNER, 2 FOR WALL, 1 FOR CENTER) 6 EFFECTIVE HEAT RELEASE RATE 2882.3961 Btu/s

([ BOX 4] X [BOX 5])

.7

. PLUMETEMPERATURE RISE ATTARGET 546.84 F

(LOOK UP VALUE FROM TABLE SE) 8a MAXIMUM AMBIENTTEMPERATURE F

8b CRlTICAL TEMPERATURE RISE AT TARGET 610 F

([BOX 1] - MAXIMUM AMBIENT TEMPERATURE)

CRITICAL - PLUME TEMPERATURE RISE 63.16 F

l

([BOX 8] - [BOX 7])

IF THE ENTRY IN BOX 9 IS < = 0, STOP. OTHERWISE CONTINUE TO CALCULATE THE CRITICAL COMBUSTIBLE LOAD NEEDED TO RAISE THE AVERAGE TEMPERATURE BY THIS AMOUNT 10 Qnet/V TO ACHIEVE TEMP RISE IN BOX 9 1.04 Btu/ft3 (LOOK UP VALUE FROM TABLE 7E) 11 CALCULATED ENCLOSURE VOLUME, V 112200 ft3

([BOX 3] X FLOOR AREA OF SPACE) 12 CALCULATED CRITICAL Qnet 116,421 Btu

([BOX 10] X [BOX11])

13 ESTIMATED HEAT LOSS FRACTION if (REPRESENTATIVE VALUE: 0.7) 14 ESTIMATE OF CRITICAL Qtot 388,070 Btu

([BOX 12]/(1 - [BOX13]))

15 ESTIMATE OF ACTUAL Qtot 432,359 Btu

([HRR] X [TIME]) = [BOX 4] X [TIME]

IF THE ENTRY IN BOX 15 IS LESS THAN THE VALUE IN BOX 14, CRITICAL CONDITIONS ARE NOT INDICATED FORTHE SCENARIO BEING EVALUATED. OTHERWISE, THE SCENARIO DOES NOT PASS THIS SCREENING PROCEDURE. FURTHER ANALYSIS REQUIRED.

ERIN Engineering & Research, Inc.

Page 10 of 24 QUICK FIVE Version 2.1, 1995

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FA32 FSMsx~ls FW-6 Large -Out-Plume FIXED COMBUSTIBLE / TARGET OUTSIDE PLUME ENGLISH UNITS VERSION I

TARGET DAMAGE THRESHOLD TEMPERATURE R

F (LOOK UP VALUE FROM TABLE 1E) 2 HEIGHT OF TARGET ABOVE FIRE SOURCE 182 ft (BASED ON SCENARIO GEOMETRY) 3 HEIGHT FROM FIRE SOURCETO CEILING 2

ft (BASED ON SCENARIO GEOMETRY) 3a FLOORDIMENSIONS - LENGTH

.207XM7S ft

_-WIDTH 27 ft 3b FLOOR AREA [LENGTH] X [WIDTH]

5610 ft2 3c ESTIMATED DURATION OF FIRE 2i5 m

4 RATIO OFTARGETHEIGHT/CEILNG HEIGHT 0.91

((BOX21I[BOX3])

IF THE VALUE IN BOX 4 IS> 0.15, COMPLETE BOXES 5-11; OTHERWISE, ENTER A VALUE OF 0 IN BOX 14 AND CONTINUE WITH BOX 15.

5 LONGITUDINAL DISTANCE FROM FIRE SOURCE TO TARGET, L 2.%.i' ft (BASED ON SCENARIO GEOMETRY) 6 LONGITUDINAL DISTANCETO HEIGHT RATIO, L/H 0.13

((BOX 51/[BOX 31) 7 ENCLOSURE WIDTH, W 27 ft (BASED ON SCENARIO GEOMETRY) 8 HEIGHT TO WIDTH RATIO, H/W 0.74 rBOX 3IltBox 71) 9-PEAK FIRE INTENSITY 2882,32 BMI/s (USE TABLE 2E FOR GUIDANCE) 10 FIRELOCATIONFACTOR m

(4 FOR CORNER, 2 FOR WALL, 1 FOR CENTER) 11 EFFECTIVE HEAT RATE RELEASE 2882.3961 Btu/5

((BOX 9] X [BOX 10])

12 PLUME TEMPERATURE RISE AT CEIIING 467.30 F

(LOOK UP VALUE FROM TABLE SE) 13 CEILING JET TEMPERATURE RISE FACTOR ATTARGEr (IF [BOX 4] < 0.BS, ENTER o, ELSE 1.169 LOOK UP VALUE FROM TABLE EA OR 6B) 14 CEILING JETTEMPERATURE RISE AT TARGET 546.29 F

(____

[BOX 12] X (BOX 13])

15a MAXIMUM AMBIENTTEMPERATURE R

F 15b CRITICAL TEMPERATURE RISE ATTARGET 610 F

nIBOX 11-MAXIMUM AMBIENTTEMPERATURE) 16 cRmCAL-CEILINGJETTEMP. RISE ATTARGET 63.71 F

([BOX 15] - (BOX 141)

IF THE ENTRY IN BOX 16IS <- 0, STOP. OTHERWISE CONTINUE TO CALCULATE THE CRITICAL COMBUSTIBLE LOAD NEEDED TO RAISE THE AVERAGE TEMPERATURE BY THE AMOUNT INDICATED IN BOX 16.

17 Qnet/V TO ACHIEVE TEMP RISE IN BOX 16 1.05 BtU/ft3 (LOOK UP VALUE FROM TABLE 7E) 18 CALCULATED ENCLOSURE VOWME, V 112,200 ft3

([BOX 391 X rBOX 31) 19 CALCULATED CRITICAL Qnet 117,385 Btu

([BOX 17] X [BOXl8])

20 ESTIMATEDHEATLOSSFRACTION(RANGE:

-I) ta, (REPRESENTATIVE VALUE: 0.7) 21 ESTIMATE OF CRITICAL Qot 391,282 Bt

-(BOX 191/(1 - (BOX20]))

22 ESTIMATE OF ACTUAL Qtot 432,359 Btu (BASED ON ENERGY CONTENTOF FIRE SOURCE)

IF THE ENTRY IN BOX 22 IS LESS THAN THE VALUE IN BOX 21, CRITICAL CONDITIONS ARE NOT INDICATED FORTHE SCENARIO BEING EVALUATED.

OTHERWISE, THE SCENARIO DOES NOT PASS THIS SCREENING PROCEDURE. FURTHER ANALYSIS REQUIRED.

ERIN Engineering & Research, Inc.

Page 11 of 24 QUICK FIVE VersIon 2.1, 1995

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FA32 FSMs.xls FW-6 Large - Radiant FIXED COMBUSTIBLE I RADIANT EXPOSURE ENGLISH UNITS VERSION CRITICAL RADIANT FLUX TO TARGET Btu/s/ft2 (REPRESENTATIVE CONSERVATIVE VALUE = 1)

(LOOK UP VALUE FROM TABLE 1E) 2 PEAK FIRE INTENSITY Btu/s (USE TABLE 2E FOR GUIDANCE)

RADIANT FRACTION OF HEAT RELEASE a

(REPRESENTATIVE VALUE = 0.4) 4 RADIANT HEAT RELEASE RATE 1152.95844 Btu/s

([BOX2]X[BOX3J) 5 CRITICAL RADIANT FLUX DISTANCE 9.58 ft (LOOK UP VALUE FROM TABLE 10E) 6 ACTUAL DISTANCE BETWEEN SOURCE/TARGET ft (FROM FIRE COMPARTMENT CCDS) l IF THE EXPOSURE FIRE IS LOCATED WITHIN THIS DISTANCE (INDICATED IN BOX 5) OF THE TARGET, CRITICAL CONDITIONS CAN OCCUR. OUTSIDE THIS RANGE, CRITICAL CONDITIONS ARE NOT INDICATED FOR THE SCENARIO UNDER CONSIDERATION.

ERIN Engineering & Research, Inc.

Page 12 of 24 QUICK FIVE Version 2.1, 1995

Fre Modelng Analyses ERIN Project No. IS9-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FASS FSMs.ds FW-6 SLare - Sw'presslon SUPPRESSION THERMALLY THICK TARGETS ENGLISH UNITS VERSION TARGET INFORATION la HEIGHT OFTARGETABOVE FIRE SOURCE ft I(BASSED ON SCENAR10 GEOMETRY) lb RActAL DISTANCE ROM FIRE SOURCETO TARGET

S:(iQ5E(^

ft UNE CF SIGff DISTANCE PROM FIRE SOURCETOTARGET 12.70 ft 2

FEAK FIRE INTENSITY Bw29$

t Bt/s FROM BASIC SCREENING METHODOLOGY 3

nR-LOCATION FACTOR (4 FOR CORNER, 2 FOR WA4L, I FOR CENTER) 4 EFFECTIVE HEAT RELEASE RATE 2882.3961 MtuIs ff! Cx Sx (BOX 3D) 6 MAxaMUM AMBIENTTEMPEPTRURE i

F 7

PLWETEMPERATURE RISE ATTARGET 996.11 F

(LOOK UP VALUE ROM TABLE SE) 8 RADANT FRACTION OF HEAT RELEASE

_ RPRESENTATIVE VALUE - 0 4)

PADLANTHEAT REkrAsE RATE 1152.95844 Bl /s

_(tTEOX 2NXBOX S8 _

DETECTOR IFCRMATION 1

RATED ACTUATION TEMPERATURE OF DETECTOR 6S F

(MNNuFAcruRERS DATA) 2 HSGHT FROM FIRE SOURCE TO CEILING ft RASEO ON SCENARIO GEOMETRY 3

FLOOR DIMENSION

- WIDTH

27

x t

4 LONGITUDINAL DISTANCE FROM FIRE SOURCETTO

DETECTOR, L

T, ft (EASED ON SCENARIO GEOMETRY)

_ 5 LONGITUDINAL DISTANCE TO HEIHT RATIO, L1 H 0.05

!oX 4y[B1OX 20) 6 HEIGHT TO WIDTH RATIO, HW 0.74

_([BOX 2IBOX 31) 282BD1_

I 7

PEAK FIRE INTENSITY 2882.3961 Btu fUSE TABLE 2E FOR GUIDANCE) 8 FIRE LOCATION FACTOR

-3 (4 FOR CORNER, 2 FOR WAUL, I FOR CENtER) 9 EFFECTIVE FIRE INTENSITY 28823961 Btu/s tte X7]

X

[BOX OD_.

10 PLUME TEMPERATURE RISE AT CEIUNG 46730 F

(LOOK UP VALUE FROM TABLE SE 11 CEILING JETTEMPERATURE RISE FACTOR AT DETECTOR 1.00 o

_ LOOK UP VALUE FROM TABLE SA OR 6B) 467_0__

12 CESUNG JETTEMPERATURE RISE AT DETECTOR 46730 F

((BoX So] x (BoX 11 TIMETO TARGET DAMAGE 1

RADIATIVE HEAT FLUX ATTARGET 0.57 8tu/sfft2 (TABLE A-3E) 2a TARGET LOCATION T

1!N-PLUME(I);,

OUT-PLUME (2) 2b CONVEClIVE HEAT FUJX ATTARGET 536 Btu/s/ft2 tTABLEs A-4E AND A-5) 3 TOTAL HEAT FLUX ATTARGET 5.93 BtuWs/ft2 t__ tBOXI]+ tBO tx lb 4

TARGET THERMAL

RESPONSE

PAA-ETER AMEM.

(TABLE A-SE)

ESTIMATED TIME TO TARGET DAMAGE 26 s

rrABLE A-2E)

T2ME TO DETECTOR ACTUATION 6

DETECTION DEVICE RATEDTEMPERATURE RISE 90 7

GAS TEMPERATURE RISE AT DETECTOR 467 F

mUsE BASIc SCREENING METHODOLOGY) 8 DETECTOR TEMPERATURE RISE/GAS TEMPERAIURE RISE 0.19 mox (BOX7])

9 DIMENSNLESS DETECTOR ACTUATION TInME 0.21 (TABLE A-Oi_

10 TIME CONSTANT OF DETECTION DEVICE tZ(

s (TABLE A-&E OR MPG. DATA) 11 ESTIMATED TIMETO DETECTOR ACTUATION 25.67 s

tpox 9s X(oxIO_.

ERIN Engineerin & Research. Inc.

Page 13 of 24 QCICK FIVE Version 2A, 1995

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FA32 FSMs.xls FW-6 Small - Fuel COMBUSTIBLE MATERIAL WORKSHEET FUEL PROPERTIES - UNCONFINED SPILL DESCRIPTION VOLUME (QUARTS)

NET HEAT OF COMBUSTION 711 COMBUSTION EFFICIENCY 900 M UNIT HEAT RELEASE RATE 1

DENSITY 60 FLOW CHARACTERISTICS DESCRIPTION SPECIFIC SPILL AREA SPILL AREA 60 PEAK FIRE INTENSITY 594 FIRE DURATION 10 0.17 i

, t..

0]

j3 SQ-Fr BTU/S SEC MIN ME MES FUEL PROPERTIES - CONFINED SPILL DESCRIPTION VOLUME (QUARTS)

NET HEAT OF COMBUSTION COMBUSTION EFFICIENCY UNIT HEAT RELEASE RATE DENSITY 2

17111 1

110 60 FLOW CHARACTERISTICS DESCRIPTION SPILL AREA PEAK FIRE INTENSITY.

FIRE DURATION SQ-Fr 11501 W22J BTU/S SEC MIN COMMENTS ERIN Engineering & Research, Inc.

Page 14 of 24 QUICK FIVE Version 2.1, 1995

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FA32 FSMs.ds FW-6 Small - In-Plume FIXED COMBUSTIBLE I TARGET IN PLUME ENGLISH UNITS VERSION 1

TARGET DAMAGE THRESHOLD TEMPERATURE F

(USE TABLE 1E FOR GUIDANCE)

HEIGHT OF TARGET ABOVE FIRE SOURCE Ah.

(BASED ON SCENARIO GEOMETRY) 3 HEIGHT FROM FIRE SOURCE TO CEILING ft (BASED ON SCENARIO GEOMETRY) 3a FLOOR DIMENSIONS - LENGTH 207.-7777.8 ft

-WIDTH ft 3b FLOOR AREA (LENGTH) X (WIDTH) 5610 ft2 3c ESTIMATED DURATION OF FIRE As.2i min 4

PEAK FIRE INTENSITY 41g.g 6

Btu/s USE TABLE 2E & FIGURES 4-5 FOR GUIDANCE) 5 FIRE LOCATION FACTOR (4 FOR CORNER, 2 FOR WALL, 1 FOR CENTER) 6 EFFECTIVE HEAT RELEASE RATE 411.720064 Btu/s

([BOX 41 X [BOX 5])

.7,

PLUME TEMPERATURE RISE ATTARGET 588.03 F

(LOOK UP VALUE FROM TABLE 5E) 8a MAXIMUM AMBIENT TEMPERATURE F

8b CRITICALTEMPERATURE RISE ATTARGET 610 F

l

([BOX 1] - MAXIMUM AMBIENT TEMPERATURE) 9 CRITICAL - PLUME TEMPERATURE RISE 21.97 F

l

([BOX B] - [BOX 7])

IF THE ENTRY IN BOX 9 IS <= 0, STOP. OTHERWISE CONTINUE TO CALCULATE THE CRITICAL COMBUSTIBLE LOAD NEEDED TO RAISE THE AVERAGE TEMPERATURE BY THIS AMOUNT 10 QnetNV TO ACHIEVE TEMP RISE IN BOX 9 0.37 Btu/ft3 (LOOK UP VALUE FROM TABLE 7E) 11 CALCULATED ENCLOSURE VOLUME, V 112200 ft3

([BOX 3) X FLOOR AREA OF SPACE) 12 CALCULATED CRITICAL Qnet 41,956 Btu

([BOX 10] X [BOX11])

13 ESTIMATED HEAT LOSS FRACTION (REPRESENTATIVE VALUE: 0.7) 14 ESTIMATE OF CRITICAL Qtot 139,854 Btu l(BOX 12)/(1 - [BOX13_))

15 ESTIMATE OF ACTUAL Qtot 61,758 Btu

([HRRI X (TIME) = [BOX 4] X [TIME)

IF THE ENTRY IN BOX 15 IS LESS THAN THE VALUE IN BOX 14, CRITICAL CONDiTIONS ARE NOT INDICATED FOR THE SCENARIO BEING EVALUATED. OTHERWISE, THE SCENARIO DOES NOT PASS THIS SCREENING PROCEDURE. FURTHER ANALYSIS REQUIRED.

ERIN Engineering & Research, Inc.

Page 15 of 24 QUICK FIVE Version 2.1, 1995

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FA32 FSMs.xls FW-6 Small - Radiant FIXED COMBUSTIBLE / RADIANT EXPOSURE ENGLISH UNITS VERSION 1

CRITICAL RADIANT FLUX TO TARGET Btu/s/ft2 (REPRESENTATIVE CONSERVATIVE VALUE = 1)

(LOOK UP VALUE FROM TABLE 1E) 2 PEAK FIRE INTENSITY h4 Btu/s (USE TABLE 2E FOR GUIDANCE) 3 RADIANT FRACTION OF HEAT RELEASE (REPRESENTATIVE VALUE = 0.4) 4 RADIANT HEAT RELEASE RATE 164.688026 BtUls

([BOX2]X[BOX3])

5 CRITICAL RADIANT FLUX DISTANCE 3.62 ft (LOOK UP VALUE FROM TABLE 10E) 6 ACTUAL DISTANCE BETWEEN SOURCE/TARGET l

(FROM FIRE COMPARTMENT CCDS)

IF THE EXPOSURE FIRE IS LOCATED WITHIN THIS DISTANCE (INDICATED IN BOX 5) OF THE TARGET, CRITICAL CONDITIONS CAN OCCUR. OUTSIDE THIS RANGE, CRITICAL CONDITIONS ARE NOT INDICATED FOR THE SCENARIO UNDER CONSIDERATION.

, r ERIN Engineering & Research, Inc.

Page 16 of 24 QUICK FIVE Version 2.1, 1995

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project COMBUSTIBLE MATERIAL WORKSHEET FUEL PROPERTIES - UNCONFINED SPILL FA32 FSMs.xls IA Large - Fuel DESCRIPTION VOLUME (QUARTS)

NET HEAT OF COMBUSTION COMBUSTION EFFICIENCY UNIT HEAT RELEASE RATE DENSITY 28~

171 FLOW CHARACTERISTICS DESCRIPTION SPECIFIC SPILL AREA SPILL AREA PEAK FIRE INTENSITY FIRE DURATION

. '120.0 0:-

840 83160 10 0.173 SQ-FT BTU/S SEC MIN FUEL PROPERTIES - CONFINED SPILL DESCRIPTION VOLUME (QUARTS)

NET HEAT OF COMBUSTION COMBUSTION EFFICIENCY UNIT HEAT RELEASE RATE DENSIY 28 17111 1

110 60 FLOW CHARACTERISTICS DESCRIPTION SPILL AREA SQ-FT PEAK FIRE INTENSITY FIRE DURATION F1 11501 W22J BTU/S SEC MIN COMMENTS QUICK FIVE Version 2.1, 1995 ERIN Engineering & Research, Inc.

Page 17 of 24

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FIXED COMBUSTIBLE / TARGET IN PLUME ENGLISH UNITS VERSION FA32 FSMs.xls IA Large - In-Plume 1

TARGET DAMAGE THRESHOLD TEMPERATURE F

(USE TABLE 1E FOR GUIDANCE) 2 HEIGHT OF TARGET ABOVE FIRE SOURCE ft (BASED ON SCENARIO GEOMETRY) 3 HEIGHT FROM FIRE SOURCE TO CEILING ft (BASED ON SCENARIO GEOMETRY) 3a FLOOR DIMENSIONS - LENGTH

.207777778 ft

-WIDTH ft 3b FLOOR AREA (LENGT X (WIDTH) 5610 ft2 3C ESTIMATED DURATION OF FIRE min 4

PEAK FIRE INTENSITY L

87 Btu/s USE TABLE 2E & FIGURES 4-5 FOR GUIDANCE) 5 FIRE LOCATION FACTOR 1

(4 FOR CORNER, 2 FOR WALL, 1 FOR CENTER) 6 EFFECTIVE HEAT RELEASE RATE 5763.48787 Btu/s

([BOX 4] X [BOX 5])

7.

PLUME TEMPERATURE RISE AT TARGET 741.68 F

(LOOK UP VALUE FROM TABLE SE) 8a MAXIMUM AMBIENTTEMPERATURE F

8b CRITICAL TEMPERATURE RISE AT TARGET 610 F

([BOX 1) - MAXIMUM AMBIENTTEMPERATURE) 9 CRITICAL-PLUME TEMPERATURE RISE

-131.68 F

([BOX B] - [BOX 7])

IFTHE ENTRY IN BOX 9IS <= 0, STOP. OTHERWISE CONTINUE TO CALCULATE THE CRITICAL COMBUSTIBLE LOAD NEEDED TO RAISE THE AVERAGE TEMPERATURE BY THIS AMOUNT 10 QnetWV TO ACHIEVETEMP RISE IN BOX 9 0.00 Btu/ft3 (LOOK UP VALUE FROM TABLE 7E) 11 CALCULATED ENCLOSURE VOLUME, V 0

ft3

([BOX 3] X FLOOR AREA OF SPACE) 12 CALCULATED CRiTICAL Qnet 0

Btu

([BOX 10] X [BOX11])

13 ESTIMATED HEAT LOSS FRACTION (REPRESENTATIVE VALUE: 0.7)

_-14 ESTIMATE OF CRITICAL Qtot 0

Btu

([BOX 121(1 - [BOX13J))

15 ESTIMATE OF ACTUAL Qtot 0

Btu

([HRRI X [TIME]) = [BOX 4] X [TIME]

IF THE ENTRY IN BOX 15IS LESS THAN THE VALUE IN BOX 14, CRITICAL CONDITIONS ARE NOT INDICATED FORTHE SCENARIO BEING EVALUATED. OTHERWISE, THE SCENARIO DOES NOT PASS THIS SCREENING PROCEDURE. FURTHER ANALYSIS REQUIRED.

ERIN Engineering & Research, Inc.

Page 18 of 24 QUICK FIVE Version 2.1, 1995

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FA32 FSMs.xls IA Large - Out-Plume FIXED COMBUSTIBLE / TARGET OUTSIDE PLUME ENGLISH UNITS VERSION 1

TARGET DAMAGE THRESHOLD TEMPERATURE (LOOK UP VALUE FROM TABLE 1E) 2 HEIGHT OF TARGET ABOVE FIRE SOURCE (BASED ON SCENARIO GEOMETRY) 3 HEIGHT FROM FIRE SOURCE TO CEILING (BASED ON SCENARIO GEOMETRY) 3a FLOOR DIMENSIONS - LENGTH

- WIDTH 3b FLOOR AREA

[LENGTH] X [WIDTH]

3c ESnIMATED DURATION OF FIRE 4

RATIO OF TARGET HEIGHT/CEIliNG HEIGHT BOX21/[BOX31)

IF THE VALUE IN BOX 4 IS > 0.85, COMPLETE BOXES 5-11; OTHERWISE, ENTER A VALUE OF 0 IN BOX 14 AND CONTINUE WITH BOX is.

5 LONGITUDINAL DISTANCE FROM FIRE SOURCE TO TARGET, L ft (BASED ON SCENARIO GEOMETRY) 6 LONGITUDINAL DISTANCE TO HEIGHT RATIO, L/H 0.32

([BOX Si/(BOX 3])

l 7

ENCLOSURE WIDTH, W 27 ft (BASED ON SCENARIO GEOMETRY) 8 HEIGHTTO WIDTH RATIO, H/W 0.74

((BOX 31/1BOX 7i) 9 PEAK FIRE INTENSI1Y 5

v763A8795 Btu/s 10 (USE TABLE 2E FOR GUIDANCE)

Is O0 FIRE LOCATION FACTOR 1:;,

(4 FOR CORNER, 2 FOR WALL, 1 FOR CENTER) l 11 EFFECTIVE HEAT RATE RELEASE 5763.4879 Btu/s l

([BOX 9] X [BOX 10])

12 PWME TEMPERATURE RISE AT CEILING 741.68 F

(LOOK UP VALUE FROM TABLE SE) 13 CEILING JET TEMPERATURE RISE FACTOR ATTARGET (IF [BOX 4] < 0.85, ENTER 0, ELSE 0.641 LOOK UP VALUE FROM TABLE 6A OR 6B) 14 CEILING JETTEMPERATURE RISE ATTARGET 475.60 F

l (BOX 121 X (BOX 13])

15a MAXIMUM AMBIENT TEMPERATURE Miiki° IF 15b CRITICALTEMPERATURE RISE ATTARGET 610 F

([BOX 11-MAXIMUM AMBIENTTEMPERATURE) l 16 CRMCAL - CEILING JETTEMP. RISE ATTARGET 134.40 F

t[BOX is] - (BOX 14])

1 IF THE ENTRY IN BOX 16 IS <- 0, STOP. OTHERWISE CONTINUE TO CALCULATE THE CRITICAL COMBUSTIBLE LOAD NEEDED TO RAISE THE AVERAGE TEMPERATURE BYTHE AMOUNT INDICATED IN BOX 16.

l 17 QnewV TO ACHIEVE TEMP RISE IN BOX 16 2.09 Btu/ft3 (LOOK UP VALUE FROM TABLE 7E) 18 CALCULATED ENCLOSURE VOLUME, V 112,200 fL3

((BOX 381 X rBOX 31) 19 CALCULATED CRITICAL Qnet 234,141 Btu

([BOX 17] X (BOX18])

20 ESTIMATED HEAT LOSS FRACTION (RANGE: 0-1)

(REPRESENTATIVE VALUE: 0.7) 21 EsTIMATE OF CRITICAL Qtot 780,471 Btu

([BOX 19]1(1- (BOX20f)_

22 ESTIMATE OF ACTUAL Qtot 864,523 Btu (BASED ON ENERGY CONTENT OF FIRE SOURCE)

IF THE ENTRY IN BOX 22 IS LESS THAN THE VALUE IN BOX 21, CRITICAL CONDOTIONS ARE NOT INDICATED FOR THE SCENARIO BEING EVALUATED. OTHERWISE, THE SCENARIO DOES NOT PASS THIS SCREENING PROCEDURE.

FURTHER ANALYSIS REQUIRED.

ERIN Engineerdng & Researdc, Inc.

Page 19 of 24 QUICK FIVE VersIon 2.1, 199S

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FIXED COMBUSTIBLE / RADIANT EXPOSURE ENGLISH UNITS VERSION FA32 FSMs.xls IA Large - Radiant 1

CRITICAL RADIANT FLUX TO TARGET Btu/s/ft2 (REPRESENTATIVE CONSERVATIVE VALUE = 1)

(LOOK UP VALUE FROM TABLE 1E)_

2 PEAK FIRE INTENSITY Btu/s (USE TABLE 2E FOR GUIDANCE) 3 RADIANT FRACTION OF HEAT RELEASE b4 (REPRESENTATIVE VALUE = 0.4) 4 RADIANT HEAT RELEASE RATE 2305.39515 Btu/s

((BOX2]X[BOX3])

5 CRITICAL RADIANT FLUX DISTANCE 13.54 ft (LOOK UP VALUE FROM TABLE 10E) 6 ACTUAL DISTANCE BETWEEN SOURCEITARGET ft (FROM FIRE COMPARTMENT CCDS)

IF THE EXPOSURE FIRE IS LOCATED WITHIN THIS DISTANCE (INDICATED IN BOX 5) OF THE TARGET, CRITICAL CONDITIONS CAN OCCUR. OUTSIDE THIS RANGE, CRITICAL CONDITIONS ARE NOT INDICATED FOR THE SCENARIO UNDER CONSIDERATION.

ERIN Engineering & Research, Inc.

Page 20 of 24 QUICK FIVE Version 2.1, 1995

fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FA2 FSMs As LA Large - Sw4presslon SUPPRESSION THERMALLY THICK TARGETS ENGLISH UNITS VERSION TARGET INFORMATION la HEIGHT OF TARGET ABOVE FIRE SOURCE

t (BASED ON SCENARIO GEOMETRY) lb RADIAL DISTANCE FROM FIRE SOURCE TO TARGET

sfi jI,>

ft LINE OF SIGHT DISTANCE FROM FIRE SOURCE TO TARGET 16.00 ft 2

PEAK FIRE INTENSITY S7..

Btu/s FROM BASIC SCREENING METHODOLOGY 3

FIRE LOCATION FACTOR

• • s (4 FOR CORNER, 2 FOR WALL, I FOR CENTER) 4 EFFECTIVE HEAT REIEASE RATE 5763.48787 Btu/s rBOX 2]1 X DBOX3))

6 MAXIMUM AMBIENT TEMPERATURE F

7 PLUME TEMPERATURE RISE ATTARGET 1075.81 F

(LOOK UP VAWE FROM TABLE SE) 8 RADIANT FRACTION OF HEAT RELEASE (REPRESENTATIVE VALUE 8 0 4) 9 RADIANT HEAT RELEASE RATE 2305.39515 BtWs

_ (BOX 2pqBOx E])

DETECTOR INFORMATION 1

RATED ACTUATION TEMPERATURE OF DETECTOR F

(MANUFACTURERS DATA) 2 HEIGHT FROM FIRE SOURCE TO CEILING I.

f (BASED ON SCENARIO GEOMETRY 3

FLOOR DIMENSION-WIDTH ft 4

LONGITUDINAL DISTANCE FROM FIRE SOURCE TO DETECTOR, L

ft (BASED ON SCENARIO GEOMETRY) 5 LONGITUDINAL DISTANCE TO HEIGHT RATIO, I0.05 e((BOX 41teOX 2D) 0i74 6

HEIGHTTO wIDTH RATIO, HV 0.4 (IBOX 21IBOX 3])

7 PEAKFIREINTENSTY 5763.48787 Btus (USE TABLE 2E FOR GUIDANCE) 8 FIRE LOCATION FACTOR (4 FOR CORNER, 2 FOR WALL, I FOR CENTER) 576_4887_

9 EFFECTIVE FIRE INTENSITY 5763.48787 Btu/s

((Box 7] X (BOX BD I

10 PLUME TEMPERATURE ESE AT CEIUNG 741.68 F

(LOOK UP VAWE FROM TABLE SE) 11 CEIUNG JETTEMPERATURE RISE FACTOR AT DETECTOR 1.00 (LOOK UP VALUE FROM TABLE 6A OR 6B) 2 CEIUNG BETTEMPERATUJRE RISE AT DETECTOR 741.68 F

IrBox 1) x (BOX tIS])

TIME TO TARGET DAMAGE 1

RADIATIVE HEAT FUIX AT TARGET 0.72 Etu/s/ft2 (TABLE A-3E) 2a TARGET LOCATION IN-PLUME(I), OUT-PWME (2) 2b CONVECTIVE HEAT FUX ATTARGET 6.75 Btu/s/ft2 (TABLES A-4E AND A-S) 3 TOTAL HEAT FLUX ATTARGET 7.47 Btuls/ftU (BOXI] +

ox2bOX ])

4 TARGETTHERMAL

RESPONSE

PARAMETER-(TABLE A-7E) 5 ESTIMATED TIME TO TARGET DAMAGE 16 s

-rTAeaA-2q nME TO DETECTOR ACTUATION 6

DETECTION DEVICE RATED TEMPERATURE RISE 90 F

7 GAS TEMPERATURE RISE AT DETECTOR 742 F

(USE BASIC SCREENING HETHODOLOGY) 8 DETECTORTEMPERATURE RISEIGASTEMPERATURE RISE 0.12

((BOX 6Y0BOX 7D 9

DIMENSIONLESS DETECTOR ACTUATION TIME 0.13 (TABLE A-I) 10 TIME CONSTANT OF DETECTION DEVICE (TABLE A-6E OR MFG. DATA) 11 ESTIMATED TIME TO DETECTOR ACTUATION 15.52 s

_BOx 9B] x tBOX 10.)

ERIN Enineering & Researdh, Inc.

Page 21 of 24 QUICK FIVE Veri 2.1, 1995

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project COMBUSTIBLE MATERIAL WORKSHEET FUEL PROPERTIES - UNCONFINED SPILL DESCRIPTION VOLUME (QUARTS)

NET HEAT OF COMBUSTION i7i1 COMBUSTION EFFICIENCY 90%

UNIT HEAT RELEASE RATE 110 DENSIlY FLOW CHARACTERISTICS FA32 FSMsxls IA Small - Fuel DESCRIPTION SPECIFIC SPILL AREA SPILL AREA PEAK FIRE INTENSITY FIRE DURATION 12.0...

84 8316 10 0.173 SQ-FT BTU/S SEC MIN 111

&E_

I IG FUEL PROPERTIES - CONFINED SPILL DESCRIPTION VOLUME (QUARTS)

NET HEAT OF COMBUSTION COMBUSTION EFFICIENCY UNIT HEAT RELEASE RATE DENSITY 3

17111 1

110 60 FLOW CHARACTERISTICS DESCRIPTION SPILL AREA PEAK FIRE INTENSITY FIRE DURATION RS..

SQ-Fr 576 11501 2.500 BTU/S SEC MIN COMMENTS QUICK FIVE Version 2.1, 1995 ERIN Engineering & Research, Inc.

Page 22 of 24

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FIXED COMBUSTIBLE I TARGET IN PLUME ENGLISH UNITS VERSION FA32 FSMs.xls IA Small - In-Plume 1

TARGET DAMAGE THRESHOLD TEMPERATURE F

(USE TABLE 1E FOR GUIDANCE) 2 HEIGHT OF TARGET ABOVE FIRE SOURCE ft (BASED ON SCENARIO GEOMETRY) l 3

HEIGHT FROM FIRE SOURCE TO CEILING ft (BASED ON SCENARIO GEOMETRY) 3a FLOOR DIMENSIONS - LENGTH 2U7 77778 ft

- WIDTH ft 3b FLOOR AREA (LENGTH) X (WIDTH) 5610 ft2 3c ESTIMATED DURATION OF FIRE minm 4

PEAK FIRE INTENSITY SZ6+4P3.9>.7 Btu/s USE TABLE 2E & FIGURES 4-5 FOR GUIDANCE) 5 FIRE LOCATION FACTOR.

(4 FOR CORNER, 2 FOR WALL, 1 FOR CENTER) 6 EFFECTIVE HEAT RELEASE RATE 576.401067 Btu/s l_

([BOX 4] X [BOX 5])

7 PLUME TEMPERATURE RISE AT TARGET 593.69 F

(LOOK UP VALUE FROM TABLE SE) 8a MAXIMUM AMBIENT TEMPERATURE F

8b CRITICALTEMPERATURE RISE AT TARGET 610 F

([BOX 1] - MAXIMUM AMBIENTTEMPERATURE) 9 CRITICAL - PLUMETEMPERATURE RISE 16.31 F

([BOX 8] - [BOX 7])

IFTHE ENTRY IN BOX 9 IS <= 0, STOP. OTHERWISE CONTINUE TO CALCULATE THE CRITICAL COMBUSTIBLE LOAD NEEDED TO RAISE THE AVERAGE TEMPERATURE BY THIS AMOUNT 10 QnetV TO ACHIEVE TEMP RISE IN BOX 9 0.28 Btu/ft3 (LOOK UP VALUE FROM TABLE 7E)_

11 CALCULATED ENCLOSURE VOLUME, V 112200 ft3

([BOX 3] X FLOOR AREA OF SPACE) 12 CALCULATED CRMCAL Qnet 31,299 Btu

([BOX 10] X [BOX11])

13 ESTIMATED HEAT LOSS FRACTION M _

(REPRESENTATIVE VALUE: 0.7) 14 ESTIMATE OF CRMCAL Qtot 104,329 Btu

([BOX 12]/(1 - [BOX13]))

15 ESTIMATE OF ACTUAL Qtot 86,460 Btu l

([HRR] X [TIME]) = [BOX 4] X (IME]

IF THE ENTRY IN BOX 15 IS LESS THAN THE VALUE IN BOX 14, CRITICAL CONDITIONS ARE NOT INDICATED FOR THE SCENARIO BEING EVALUATED. OTHERWISE, THE SCENARIO DOES NOT PASS THIS SCREENING PROCEDURE. FURTHER ANALYSIS REQUIRED.

QUICK FIVE Version 2.1, 1995 ERIN Engineering & Research, Inc.

Page 23 of 24

Fire Modeling Analyses ERIN Project No. 159-99-07 OPPD - Fort Calhoun Station Fire Risk Analysis Refinement Project FIXED COMBUSTIBLE / RADIANT EXPOSURE ENGLISH UNITS VERSION FA32 FSMs.xls IA Small - Radiant 1

CRITICAL RADIANT FLUX TO TARGET Btu/s/ft2 (REPRESENTATIVE CONSERVATIVE VALUE = 1)

(LOOK UP VALUE FROM TABLE 1E) 2 PEAK FIRE INTENSITY

.576 401D Btu/s (USE TABLE 2E FOR GUIDANCE) 3 RADIANT FRACTION OF HEAT RELEASE 4

l (REPRESENTATIVE VALUE = 0.4) l 4

RADIANT HEAT RELEASE RATE 230.560427 Btu/s

([BOX2]X[BOX3])

5 CRITICAL RADIANT FLUX DISTANCE 4.28 ft (LOOK UP VALUE FROM TABLE 10E) 6 ACTUAL DISTANCE BETWEEN SOURCE/TARGET ft (FROM FIRE COMPARTMENT CCDS)

IF THE EXPOSURE FIRE IS LOCATED WITHIN THIS DISTANCE (INDICATED IN BOX 5) OFTHE TARGET, CRITICAL CONDITIONS CAN OCCUR. OUTSIDE THIS RANGE, CRMTICAL CONDITIONS ARE NOT INDICATED FOR THE SCENARIO UNDER CONSIDERATION.

QUICK FIVE Version 2.1, 1995 ERIN Engineering & Research, Inc.

Page 24 of 24