ML110060142

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HC.OP-GP.ZZ-0005(Q), Rev. 8, Drywell Leakege Source Detection
ML110060142
Person / Time
Site: Salem, Hope Creek  PSEG icon.png
Issue date: 11/25/2009
From:
Public Service Enterprise Group
To:
Office of Nuclear Reactor Regulation
References
LR-N10-0355 HC.OP-GP.ZZ-0005(Q), Rev 8
Download: ML110060142 (30)
v • d • e


Text

PSEG Internal Use Only PSEG NUCLEAR L.L.C.

Page 1 of 1 HOPE CREEK GENERATING STATION HC.OP-GP.ZZ-0005(Q) - Rev. 8 DRYWELL LEAKAGE SOURCE DETECTION USE CATEGORY: II

  • Packages and Affected Document Numbers incorporated into this revision:

CP No.

CP Rev.

AD No.

Rev No.

None 9

  • The following OPEX were incorporated into this revision: None
  • The following OTSCs were incorporated into this revision: None REVISION

SUMMARY

  • The description for Computer points A9317 and A9318 has bee corrected per 70093877.

The description has been corrected for these points throughout the procedure. This is an editorial change. (70090815-0010)

  • Breaks up Step 5.1.7 to have separate signoffs for each of the Drywell Unit Cooler Fans.

This is a format change and editorial.

  • Updates the title for the Operations Director throughout the procedure.

IMPLEMENTATION REQUIREMENTS Effective Date 11/25/09 None

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 1 of 29 Rev. 8 DRYWELL LEAKAGE SOURCE DETENTION TABLE OF CONTENTS Section Title Page 1.0 PURP OSE.............................................................................................................2 2.0 PREREQUI SITES.................................................................................................2 3.0 PRECAUTIONS AND LIMITATIONS....................................................................2 4.0 EQUIPMENT REQUIRED.....................................................................................3 5.0 PROC EDURE.......................................................................................................4 5.1 Generally Locating and Quantifying the Leak.............................................4 5.2 Valving to Stop Leakage to the Floor Drain Sump....................................11 5.3 D/W Equipment Drain Sump (Identified) Leakage High............................20 6.0 RECO RDS..........................................................................................................22 7.0 REFERE NCES....................................................................................................22 ATTACHMENTS

, Drywell Unit Cooler Location.............................................................................24, Data Collection Sheet........................................................................................25, Narrative Sheet..................................................................................................26, Monthly Data Trending Sheet............................................................................28, Leakage Source Determination Guideline.........................................................29

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 2 of 29 Rev. 8 1.0 PURPOSE This procedure outlines the methods available to determine the source of an increase in Drywell Floor Drain (unidentified) or Equipment Drain (identified) leakage. This procedure specifies valves to backseat or close that may stop the leakage. It categorizes the effect of this valving on system operability and on Technical Specification Limited Conditions of Operation. This procedure also allows for the implementation of preplanned leak location and isolation actions as required by Technical Specification 3.4.3.2. Action e.

2.0 PREREQUISITES 2.1 Trended Drywell leakage data shows that leakage is increasing above a baseline leakage rate.

2.2 Operations Director authorization is required before performing Steps 5.2.3, 5.2.5 and 5.2.7 of this procedure.

3.0 PRECAUTIONS AND LIMITATIONS 3.1 Precautions 3.1.1.

This procedure, once opened, will remain in effect until the Unit is in shutdown and/or the sources of all the unidentified leaks have been identified and repaired.

3.1.2.

The Narrative Section should contain a discussion of the steps taken and the conclusion(s) drawn.

3.1.3.

The Narrative Section should be expanded as necessary to trace steps taken and any conclusions drawn.

3.1.4. will be used for the new monthly recurring task involving data collection for future trending.

3.1.5.

REFER to applicable system operating procedures for guidance on operational impact when operating components addressed by this procedure.

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 3 of 29 Rev. 8 3.2 Limitations 3.2.1. Technical Specifications 3.4.3.2 requires ACTION WHEN there is any PRESSURE BOUNDARY LEAKAGE OR 5 gpm UNIDENTIFIED LEAKAGE OR 25 gpm IDENTIFIED LEAKAGE averaged over any 24 hr period OR a 2 gpm increase in UNIDENTIFIED LEAKAGE within any period of 24 hrs or less OR 5 gpm leakage per nominal inch of valve size from any RCS Pressure Isolation Valve specified in Table 3.4.3.2-1 at rated pressure. ____

3.2.2. Technical Specifications paragraph 3.6.3 requires ACTION within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> WHEN Primary Containment Isolation Valves are inoperable.

This includes cases WHEN the valve isolation time is effected AND is not determined by surveillance test.

4.0 EQUIPMENT REQUIRED None

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 4 of 29 Rev. 8 NOTE That portion of unidentified leakage in the Drywell that can be identified as to its source and quantified by isolation techniques can be considered as identified leakage.

Once so identified, the leakage may be permitted to exist (within the limits defined by Tech Specs), by releasing the isolation measures if necessary to restore an isolated system to OPERABLE status where that system's associated TS ACTION would otherwise require a plant shutdown.

5.0 PROCEDURE 5.1 Generally Locating and Quantifying the Leak 5.1.1.

RECORD all data on Attachment 2 & 3 for future trending reference. ____

5.1.2.

USE the RM-11 Radiation Monitoring System terminal as necessary to produce daily, hourly, OR 10 minute trends of the following DLD System data:

A.

DLD Floor Drain Flow RM-11 Point:

9AX314 ____

B.

DLD Equipment Drain Flow 9AX313 ____

C.

DLD Sum (Floor + Eq Drain) Flow 9AX319 ____

D.

DLD Condensate Cooler Monitor Flow (DLD-CCM)

Upper - 9AX317 Lower - 9AX318 Sum - 9AX320 E.

DLD Noble Gas RMS (DLD-RMS)

SK-RI4991 or 9RX507 5.1.3.

CHECK the following CRIDS Points for indication of leakage:

  • D2934 Recirc Pump Motor Cooler A Drain
  • D2935 Recirc Pump Motor Cooler B Drain

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 5 of 29 Rev. 8 5.1.4.

Using CRIDS Page Display 60, OBTAIN Drywell Area and Drywell Unit Cooler temperatures.

AND RECORD data on Attachment 2.

A.

ANALYZE the data with respect to the base line (IF a base line before the leak began is available), to determine the area(s) of the Drywell that may have a steam leak.

B. IF necessary, USE The following drawings to relate areas of the Drywell to equipment locations:

  • P&ID M-25-1; Sht 1, Plant Leak Detection
  • P&ID M-77-1, Drywell Air Flow Diagram
  • P&ID M-86-1, Drywell Control Diagram
  • P&ID M-87-1; Sht 2, Chilled Water System Rx Bldg &

D/W Chilled Water

  • P-1702-1 thru 1708 Piping Area Drawing Rx Bldg Area 17 Plan El (various)
  • P-1711-1 thru 1713 Piping Area Drawing Rx Bldg Area 17 Section (various)
  • P-9170-1 HVAC Drawing Section Rx Bldg Area 17
  • P-9172-1 thru 9179 HVAC Area Dwg Rx Bldg Area 17 Plan EL (various)
  • C-0928-0 Cont Vessel Requirements D/W Penetrations Elev & Details C. IF necessary, USE P&ID drawing M-61-1 (Sht 1 & 2) to reference potential sources of Floor and Equipment Sump input in the Drywell.

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 6 of 29 Rev. 8 NOTE Using Drywell Sump samples for leakage source determination may be unreliable. Variables such as leakage travel time to the sumps, the amount of leakage absorbed in pipe lagging, the Condensate flowpath for steam leaks to the sump, and the location of the leak are all potential contributors to sample unreliability.

5.1.5.

CONSIDER the following sources while attempting to identify AND quantify the unidentified leakage:

  • Chilled Water - monitoring Head Tank assuming no other leaks. ____
  • RACS - monitoring Head Tank assuming no other leaks.
  • CRD - Chemistry sampling, analysis. [70035920]

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 7 of 29 Rev. 8 NOTE By systematically stopping D/W Unit Cooler Fans and monitoring DLD-CCM flow and D/W Floor Drain flow, the approximate sector and elevation of the leak may be determined. That is, if one D/W Cooler is drawing a suction from the area of the steam leak and then is secured, the CCM and Floor Drain flow will noticeably decrease until the steam diffuses to other areas and other D/W Coolers. should be referred to for Drywell Unit Cooler approximate locations and M-77-1, for Drywell Air Flow Diagram.

5.1.6. WHEN securing the Drywell Cooling Unit Fans, ENSURE that the Drywell average air temperature does not exceed 135°F as specified in Technical Specification 3.6.1.7.

A.

SETUP Plant Historian to record the following points within the following graphs:

Graph #1 A9313 DWED flow A9314 DWFD flow A9317 Upper Condensate Cooler flow A9318 Lower CC Flow Graph #2 A2264 thru A2266, A2273 Local D/W Temperatures Graph #3 A2267, A2269, A2270, A2271 Local D/W Temperatures Graph #4 A2279 thru A2285 Local D/W Temperatures Graph #5 A2272, A2274 thru A2278, A2286, A2287 Local D/W Temperatures B.

SECURE BOTH the X1 and X2 fans at the same time AND RECORD Historian time. Expect Condensate Cooler and D/W Floor Drains flows to increase.

(continued on next page)

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 8 of 29 Rev. 8 5.1.6 (continued)

C.

MONITOR average D/W temperature, pressure (SPDS and hardwire), local D/W temperatures when securing fans.

RESTORE fans if local temperatures exceed 225°F.

D.

Floor Drain flow increases > 5 gpm OR drain flow > 2 gpm in 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> may occur during evolution and has occurred in the past and is attributed to the change in dp in the fan's drain lines. As the dp drops to 0 psig, water that was held in the drain pan of the fan by the dp will drain rapidly giving indication of high flows for several minutes.

IF these flow values do not return to within Tech Spec after the fans have been placed back in service, THEN ENTER the appropriate Tech Spec.

E.

MONITOR SRV tailpipe temperature while D/W Fans are secured. ____

F.

After fans are restored PERFORM the following:

1.

RECORD historian time.

2.

WAIT 15 minutes AND PRINT Histroian graphs No. 1, 2 and 3.

3.

MARK-UP graphs with start and stop times AND which fans were secured.

G.

VERFIY DWFD and DWED CC flows have been returned to pre-evolution values and have stablized.

EVALUATE any deviations against Tech Specs prior to proceeding. ____

H.

WAIT 30 - 60 minutes before repating for the next fan, unless steady state values are determined by the shift are achived sooner.

I.

LOG actions AND responses in the Attachment 3; Narrative Sheet.

  • Fan Identification X1 / X2
  • Historian time fan secured
  • Historian time fan started

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 9 of 29 Rev. 8 5.1.7.

STOP each Drywell Unit Cooler AVH-212 through DVH-212 one at a time, for approximately 15 minutes each and THEN RESTART the fans. MONITOR noticeable dip in Drywell unidentified leakage (DLD-CCM or Floor Drain)

WHEN the fans are first stopped. STOP each pair of Drywell Unit Cooler Fans EVH-212/FVH-212, and GHV-212/HVH-212 (shared suction lines).

MONITOR for a noticeable dip in Drywell unidentified leakage (DLD-CCM or Floor Drain)

WHEN the fans are first stopped:

Lower D/W Coolers

  • AVH-212
  • BVH-212
  • CVH-212
  • DVH-212 Upper D/W Coolers
  • EVH-212 and FVH-212
  • GVH-212 and HVH-212

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 10 of 29 Rev. 8 NOTE Drywell Sump sample analysis attempts to determine whether the source of leakage is Reactor water or not by determining whether the sample contains short lived isotopes.

Drywell Sump sample analysis cannot accurately indicate the percentage of Reactor coolant (short lived isotopes) in the sample.

Using Drywell Sump samples for leakage source determination may be unreliable. Variables such as leakage travel time to the sumps, the amount of leakage absorbed in pipe lagging, the Condensate flowpath for steam leaks to the sump, and the location of the leak are all potential contributors to sample unreliability.

The leakage will be Reactor steam, high temp Reactor water that will flash to steam, RACS water, TB Chilled Water, CRD water, CST water (HPCI or RCIC Jockey Pump or ECCS keep fill), or Torus Water (ECCS Jockey Pump).

5.1.8.

PERFORM the following to obtain samples:

  • REQUEST Radiation Protection draw a Marinelli Flask sample of the Drywell atmosphere from the Plant Leak Detection (SK) Skid on Rx Bldg El 162' AND DELIVER to Chemistry Count Room for analysis.
  • REQUEST Chemistry obtain a sample of the Floor or Equipment Drain Sump effluent AND perform Count Room analysis.

REFER to Attachment 5 for guidance. [70035836] ____

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 11 of 29 Rev. 8 NOTE Section 5.2 deals with valve manipulations that may stop D/W Floor Drain leakage. The system valves can be worked in any sequence. The sequence should be governed by:

  • The area in the Drywell that has been determined to have leakage based on the analysis performed in Step 5.1.5.
  • The system that is leaking based on the analysis performed in Step 5.1.7.

5.2 Valving to Stop Leakage to the Floor Drain Sump 5.2.1.

RECORD all data on Attachments 2 & 3 for future trending reference. ____

NOTE Operations Director concurrence is required before performing Step 5.2.3.

5.2.2.

Prior to performing Step 5.2.3, OBTAIN Operations Director concurrence. ____

Operations Director Date/Time

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 12 of 29 Rev. 8 CAUTION Once these valves are backseated, restoration or stroke timing will cause a system impact. System Operating Procedure should be referred to.

5.2.3.

ATTEMPT to isolate a possible valve stem packing leak by backseating the normally open valves listed below. These valves are not containment isolation valves and are not required to automatically operate.

ALLOW approx. 30 minutes between valve manipulation to observe the trend of the leakage data in Step 5.2.2.

IF after all listed valves in a system are backseated AND there is no observed decrease in D/W leakage after approx.

one hour, RESTORE the valves to normal operation.

A.

RWCU System Valves

  • BG-HV-F100
  • BG-HV-F101
  • BG-HV-F102
  • BG-HV-F106 CAUTION Operation of AE-HV-F011A & B may cause Feedwater and/or Reactor Vessel Transients.

B.

Feedwater Valves that are Red-Tagged Open

  • AE-HV-F011A
  • AE-HV-F011B C.

Main Steam, Head Vent to Main Steam Line A

  • AB-HV-F005 (continued on next page)

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 13 of 29 Rev. 8 5.2.3 (continued)

CAUTION Backseating of a Recirculation Pump Suction or Discharge valve may cause a Recirculation Pump Trip.

Once a Recirc Pump suction or discharge valve is backseated, restoration will cause a Recirc Pump trip or full runback.

D.

Recirc Pump Suction & Discharge Valves

  • BB-HV-F023A
  • BB-HV-F023B
  • BB-HV-F031A
  • BB-HV-F031B NOTE Operations Director concurrence is required before performing Step 5.2.5.

5.2.4.

Prior to performing Step 5.2.5, OBTAIN Operations Director concurrence. ____

Operations Director Date/Time

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 14 of 29 Rev. 8 NOTE Primary Containment Isolation Valves are required to close on an isolation signal. During this activity Technical Specification 3/4.6.3 shall be complied with.

CAUTION Once these valves are backseated, restoration or stroke timing will cause a system impact. System Operating Procedure should be referred to.

5.2.5.

ATTEMPT to isolate a possible valve stem packing leak by backseating the normally open valves listed below. Backseat one of the listed valves below AND OBSERVE the trend of the leakage data in Step 5.2.2.

IF after approximately 30 minutes there is no observed decrease in D/W leakage, RESTORE the valve to normal operation.

A.

Main Steam, Inboard MSIV Before Seat Drain

  • AB-HV-F016 B.

RWCU Inboard Isolation Valve

  • BG-HV-F001 C.

RACS Supply & Return for Recirc Motor & Seal

  • ED-HV-2554
  • ED-HV-2556 D.

Drywell Chilled Water Isolation Valves

  • GB-HV-9531B-1
  • GB-HV-9531B-2
  • GB-HV-9531B-3
  • GB-HV-9531B-4 (continued on next page)

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 15 of 29 Rev. 8 5.2.5 (Continued)

E.

RCIC Steam Line Inboard Isolation Valves

[PERFORM Section 5.2.7 (closing) first]

HPCI Steam Line Inboard Isolation Valves

[PERFORM Section 5.2.7 (closing) first]

  • FD-HV-F002
  • FD-HV-F100 NOTE Operations Director concurrence is required before performing Step 5.2.7.

5.2.6.

Prior to performing Step 5.2.7, OBTAIN Operations Director concurrence. ____

Operations Director Date/Time

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 16 of 29 Rev. 8 NOTE The valves in Section 5.2.3 can also be closed to stop a leak in the Drywell, but with varying operational consequences.

Technical Specifications should be complied with when closing valves in this step.

CAUTION All valve operations should be IAW applicable system operating procedure.

IF Drywell leakage is not decreased in approximately 30 minutes after closing the following valves by system, open the valve to return the system to operation.

5.2.7.

CLOSE the following valves by system as necessary for approximately 30 min. and THEN REOPEN. Stem and bonnet leakage in a valve can be stopped by closing the valve with the downstream side depressurized.

A.

Main Steam, Inboard MSIV Before Seat Drain

  • AB-HV-F016 B.

RCIC Steam Line Inboard Isolation Valves

HPCI Steam Line Inboard Isolation Valves

  • FD-HV-F002
  • FD-HV-F100

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 17 of 29 Rev. 8 NOTE Since each Drywell Unit Cooler has a Chilled Water Supply Valve to each coil, it is easy to isolate a suspected coil leak with little operational impact. The DLD-CCM should be monitoring the leakage to the Floor Drain Sump unless the leak is not collected with the condensate from the coil. IF the DLD-CCM measures the leakage, then the leaking coil is narrowed down to either the upper or lower unit coolers.

5.2.8.

CLOSE each of the following D/W Unit Cooler Chilled Water Isolation Valves as necessary for approximately 30 min and THEN REOPEN the valve.

MONITOR for a decrease in D/W unidentified leakage (DLD-CCM or Floor Drain).

A.

Lower D/W Coolers AVH-212 GB-HV-9510A1 (Lower DLD-CCM)

GB-HV-9510A2 BVH-212 GB-HV-9510B1 GB-HV-9510B2 CVH-212 GB-HV-9510C1 GB-HV-9510C2 DVH-212 GB-HV-9510D1 GB-HV-9510D2 B.

Upper D/W Coolers EVH-212 GB-HV-9510E1 (Upper DLD-CCM)

GB-HV-9510E2 FVH-212 GB-HV-9510F1 GB-HV-9510F2 GVH-212 GB-HV-9510G1 GB-HV-9510G2 HVH-212 GB-HV-9510H1 GB-HV-9510H2

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 18 of 29 Rev. 8 NOTE Operations Director concurrence is required before performing Step 5.2.10.

5.2.9.

Prior to performing Step 5.2.10, OBTAIN Operations Director concurrence. ____

Operations Director Date CAUTION This section deals with actions that will lead to a plant shutdown or cause single loop operation until restoration is made. Therefore, these actions may be useful in preparing for the drywell entry to look for the leak while the plant is headed toward cold shutdown.

All valve operations should be IAW applicable system operating procedure.

5.2.10.

CLOSE the following valves as necessary for system isolation AND leak detection:

A. RWCU System After removing the RWCU System from service the Drywell RWCU piping can be isolated by closing the following valves. The system can then be vented from outside the Drywell to depressurize the piping.

BG-HV-F100 ____

BG-HV-F106 ____

BG-HV-F101 ____

BG-HV-F102 ____

BG-HV-F039 ____

IF Drywell leakage does not decrease after one hour the system may be restored to operation.

Continued next page

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 19 of 29 Rev. 8 5.2.10 (continued)

NOTE The Recirc Pump suction and discharge valves are double disc gate valves, a stem packing or bonnet leak can be stopped by closing the valve. Step 5.2.3 (backseating of these valves) should have been performed first. IF there is still leakage, THEN a suspected bonnet leak or a suspected stem packing leak coincident with a leaking backseat would be stopped by performing Step 5.2.10.B.

CAUTION Recirculation Pump Suction or Discharge valve(s) < 90% open will cause a Recirc Pump trip.

To prevent overpressurization of Recirc Pump suction piping and pump casing, the applicable Recirc Pump seal purge flow should be secured prior to closing valves BB-HV-F023A & BB-HV-F031A (BB-HV-F023B & BB-HV-F031B).

B. Recirc System

1.

REMOVE a Recirculation Pump from service IAW HC.OP-SO.BB-0002(Q).

2.

REFER TO CAUTION 5.2.10.

3.

CLOSE the appropriate loop valves below AND OBSERVE Drywell leakage.

  • A Recirc Pump BB-HV-F023A Pump A Suct Valve BB-HV-F031A Pump A Disch Valve
  • B Recirc Pump BB-HV-F023B Pump B Suct Valve BB-HV-F031B Pump B Disch Valve

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 20 of 29 Rev. 8 NOTE This section deals with the limited actions that can be done to troubleshoot the source of D/W Equipment Drain leakage.

5.3 D/W Equipment Drain Sump (Identified) Leakage High 5.3.1.

RECORD all data on Attachments 2 & 3 for future trending reference. ____

5.3.2.

Using the following CRIDS points DETERMINE if Recirculation Pump seal stage flow OR leakage is high:

  • D2924, Recirc Pump A Seal Leakage Flow
  • D2925, Recirc Pump B Seal Leakage Flow
  • D2926, Recirc Pump A Seal Stage Flow
  • D2927, Recirc Pump B Seal Stage Flow NOTE D/W Equipment Drain Sump Chilled Water Cooling Coil has dual supply capability from either the A or B Chilled Water Loops.

5.3.3.

SWAP D/W Chilled Water to the opposite loop.

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 21 of 29 Rev. 8 NOTE The following valves have Miller actuators. The Manual Override Hydraulic Pump BYPASS and NEEDLE valves should be left in the OPEN position to allow normal actuator operation for the following valves (IAW VTD PP326A-0203)

H1GB-GB-HV-9511A1 H1GB-GB-HV-9511A2 H1GB-GB-HV-9511B1 H1GB-GB-HV-9511B2 5.3.4.

ISOLATE Coil Supply and Return Isolation Valves to determine IF coil is leaking using the following valves. (Panel 10C650)

  • HV-9511 A1/A2 Loop A Supply and Return
  • HV-9511 B1/B2 Loop B Supply and Return A.

MONITOR Drywell leakage. IF there is no decrease in leakage after approximately 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, Chilled Water can be returned to the original loop.

NOTE The following RHR normally closed valves supply the Drywell Spray Header. The header is kept dry using a hard piped drain to the Equipment Drain Sump. Leakage through both RHR valves would pass directly to the sump.

BC-HV-F016A AND BC-HV-F021A OR BC-HV-F016B AND BC-HV-F021B.

5.3.5.

MONITOR Temperature Recorder TR-R614, Point TE-B21-N064 on Panel 10C650 for evidence of leaking through the normally closed Head Vent Valves BB-HV-F001 and BB-HV-F002.

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 22 of 29 Rev. 8 6.0 RECORDS 6.1 RETAIN the following IAW RM-AA-101; Records Management Program:

  • Entire procedure (with the exception of the Attachment 1 Drywell Unit Cooler Location)
  • Historian graphs

7.0 REFERENCES

7.1 P&IDs:

  • M-25-1; Sh 1
  • M-53-1
  • M-41-1
  • M-61-1
  • M-43-1
  • M-77-1
  • M-44-1
  • M-86-1
  • M-51-1
  • M-87-1; Sh 2 7.2 Piping Drawings:
  • P-1702-1 thru P-1713-1
  • P-9170-1 thru P-9179-1 (HVAC Dwgs) 7.3 Civil Drawing:

7.4 Letters

  • Letter from R.W. Beckwith (Station Licensing Engineer) to Bill O'Malley (Operating Engineer);

Subject:

Identified/Unidentified Leakage Dated: September 12, 1990

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 23 of 29 Rev. 8 7.5 Commitment Documents

  • CD-921E
  • CD-191F 7.6 Other Documents
  • 70035920
  • 70035836 - added Attachment 5; Leakage Source Determination Guideline

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 24 of 29 Rev. 8 ATTACHMENT 1 DRYWELL UNIT COOLER LOCATION NOTES AVH-212 THROUGH DVH-212 DRYWELL UNIT COOLERS SUCTIONS ARE AT THE COOLERS.

EVH-212 & FVH-212 DRYWELL UNIT COOLERS SHARE A COMMON SUCTION WHICH DRAWS FROM 170' EL. AND UPPER DRYWELL HEAD AREA VOLUME ABOVE DIAPHRAGM Az 180° TO 360° GVH-212 & HVH-212 DRYWELL UNIT COOLERS SHARE A COMMON SUCTION WHICH DRAWS FROM 170' EL. AND UPPER DRYWELL HEAD VOLUME ABOVE DIAPHRAGM Az 0° TO 180° SEE P&ID M-77-1 A

B C

E H

G F

G D

H C

H B

E F

A 90 D

N 0

EQUIPMENT HATCH AIRLOCK 121' 110' 100' 94'

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 25 of 29 Rev. 8 ATTACHMENT 2 DATA COLLECTION SHEET DRYWELL LEAKAGE SOURCE DETECTION DATE STEP PARAMETER(S)

TIME/INTERVALS NOTE - ENSURE Attachment 3 is completed in conjunction with this Data Table.

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 26 of 29 Rev. 8 ATTACHMENT 3 NARRATIVE SHEET Page ____ of ____

NAME:

DATE:

REASON FOR TAKING DATA: ___________________________________________________

STEPS TAKEN/CONCLUSIONS DRAWN: _________________________________________

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 27 of 29 Rev. 8 ATTACHMENT 3 NARRATIVE SHEET Page ____ of ____

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 28 of 29 Rev. 8 ATTACHMENT 4 MONTHLY DATA TRENDING SHEET Date Reason for Taking Data __________________________________________________________________

DRYWELL TEMPERATURE ( SPDS ) 5070

  1. FANS I/S INLET OUTLET DRYWELL COOLER TEMP A A3261 A3269 DRYWELL COOLER TEMP B A3262 A3270 DRYWELL COOLER TEMP C A3263 A3271 DRYWELL COOLER TEMP D A3264 A3272 DRYWELL COOLER TEMP E A3265 A3273 DRYWELL COOLER TEMP F A3266 A3274 DRYWELL COOLER TEMP G A3267 A3275 DRYWELL COOLER TEMP H A3268 A3276 DRYWELL FLOOR DRAIN SUMP FLOW

( RM11 )

9314 DRYWELL EQUIP DRAIN SUMP FLOW

( RM11 )

9313 COOLER COND MONITOR (CCM)

( RM11 )

9318 COOLER COND MONITOR (CCM)

( RM11 )

9317 SUM CORE FLOW

( CRIDS)

A3190 A3189 A208 A209 RX RECIRC LOOP FLOW

( CRIDS )

A210 A211 RECIRC PMP MOTOR CLR

( CRIDS )

D2934 D2935 FI-603A-C32 FI-603B-C32 STEAM FLOW FI-603C-C32 FI-603D-C32

HC.OP-GP.ZZ-0005(Q)

Hope Creek Page 29 of 29 Rev. 8 ATTACHMENT 5 Page 1 of 1 LEAKAGE SOURCE DETERMINATION GUIDELINE Source Noble Gas Tritium Short Lived Long Lived Xe-135 Xe-135m 9.1h 15.3m H-3 12.3a Na TC-99 I-133 15h 6h 21h MN-54 Co-58 Co-60 Zn-65 312d 71d 5.3a 244d Main Steam Yes Yes No No Reactor Water Yes Yes Yes Yes Feedwater No Yes No No CRD No Yes No No Torus No Yes No Yes SACS No No No No Chilled Water No No No No When samples of the Drywell atmosphere taken from the DLD skid are analyxed, short-lived non-condensable gases like Xenon and Krypton indicate leakage from the Reactor or Main Steam System. The steam generated by these leaks would be condensed by the Room Coolers and directed to the Floor Drain Sump. The Tritium would be transported in the steam and show up in the sump as well. A significant fraction of the remaining impurities would also be transported to the sump Feedwater and CRD are basically the same water except at different temperatures. A Feedwater leak would produce steam, which would condense in the Room Coolers and transport Tritium into the Floor Drain Sump. While some CRD would be absorbed by the Drywell atmosphere and removed by the coolers, the majority would go directly to the sump.

Torus water will contain Tritium and long lived activity.

SACS and Chilled Water leaks would not contain radionuclides.

REFER to M-61-1 for inputs to sumps.

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