ML20214J028
| ML20214J028 | |
| Person / Time | |
|---|---|
| Site: | Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png |
| Issue date: | 11/07/1986 |
| From: | Opeka J CONNECTICUT YANKEE ATOMIC POWER CO. |
| To: | Charemagne Grimes Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737 A02959, A04135, A04557, A2959, A4135, A4557, NUDOCS 8612010124 | |
| Download: ML20214J028 (41) | |
Text
r CONNECTICUT YANKEE ATOMIC POWER COMPANY B E R L I N.
CONNECTICUT P.o box 270 HARTFORD. CONNECTICUT 06141-0270 TELEPHONE 203-665-$000 November 7,1986 Docket No. 50-213 A02959 A04135 A04557 Office of Nuclear Reactor Regulation Attn: Mr. Christopher I. Grimes, Director Integrated Safety Assessment Project Directorate Division of PWR Licensing - B U.S. Nuclear Regulatory Commission Washington, D.C. 20555
References:
(1) 3.F. Opeka letter to C.I. Grimes, " Supplement I to NUREG-0737; Emergency Operating Procedures Generation Pack-age," dated August 1,1986.
(2)
F.M. Akstulewicz letter to 3.F. Opeka, " Emergency Operat-ing Procedures Generation Package," dated August 19,1986.
(3) 3.F. Opeka letter to 3.A. Zwolinski, " Supplement I to NUREG-0737; Emergency Operating Procedures Generation Package; Response to Draf t Safety Evaluation," dated July 12,1985.
(4)
H.L. Thompson, Jr. letter to 3.F. Opeka, " Supplement I to NUREG-0737, Request for Extension of Time for Com-pliance with Commission Order dated June 12,1984," dated August 26,1985.
Gentlemen:
Haddam Neck Plant Supplement I to NUREG-0737 Emergency Operating Procedures Generation Package
/
In Reference (1), the Connecticut Yankee Atomic Power Company (CYAPCO) committed to submit to the NRC Staff any additional deviations between our Emergency Operating Procedures (EOPs) and the Westinghouse Owners' Group Emergency Response Guidelines (ERGS) that may have been identified as a result of our EOP verification / validation process. Attachment 1 provides this information, and thus satisfies that commitment.
The generic differences between the Haddam Neck Plant EOPs and the ERGS which were identified in Appendix A to Attachment I to Reference (1) remain applicable.
The following additional generic deviation was subsequently identified and is not repeated for each individual EOP step in which it appears:
o All references in the ERGS to steam generator narrow-range level indicators have been changed in the Haddam Neck Plant EOPs to reference wide-range level indicators aecause only the wide-range indicators are environmentally qualified for post-accident conditions.
g 8612010124 861107 fR,ADOCK 05000213 1 M Pl'R
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, In Reference (2), the NRC Staff indicated that further chang,es to the PGP
- should be made in accordance with 10 CFR 50.59. As previously stated in Reference (3), revisions to the EOPs, but not the PGP, will be reviewed in accordance with 10 CFR 50.59.
Changes to the PGP will be performed in accordance with non mal plant administrative controls. We know of no criteria
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in Supplement I to NUREG-0737 or NUREG-0899 indicating that changes to the PGP should be documented pursuant to 10 CFR 50.59.
In accordance with Reference (4), the upgraded EOPs were implemented on August 30,1986.
We trust that this submittal adequately resolves all outstanding PGP issues.
Very truly yours, CONNECTICUT YANKEE ATOMIC POWER COMPANY i
% F Ch L
- 3. F. Opek6 U
Senior Vice President g
Docket No. 50-213 Attachment No.1 Haddam Neck Plant Comparison of EOPs and ERGS November,1986
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l Step Documentaticn EOP Rev. E-0 Page 2 of 12 EOP Step: 3 Verify power to AC and DC busses.
- ERG Step: 3 Verify power to AC emergency busses.
Justification for difference:
We check power to DC bus also because control power for major 4160 volt equipment comes from DC busses.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to
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formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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- Step Documentation EOP Rev. E-0 Page 4 of 12 -
EOP Step: 10 Verify Auto Start of Diesel Generators 11 Verify Service Water Pumps - Running 12 Verify Containment Fans Running with Face Dampers Open'.
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ERG Step: 10 Verify Service Water Pumps - Running 11 Verify Containment Fan Coolers.
12 Verify Containment Ventilation Isolation.
Justification for difference:
Steps rearranged -to insure diesels are started in step 10 because they are required in steps 11 and 12 if normal power is not available. Changes from Steps 11 and 12 of the ERGS were discussed in August 1,'1986 submittal to the NRC.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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' Step Documentation EOP Rev. E-0 Page 6 of 12 EOP Step: Step deleted.
ERG Step: 17 - Verify AFW Valve Alignment.
Justification for difference:
Step 16 verifies AFW flow greater than required. Verifying flow verifies the valve alignment, therefore step 17 is redundant and was deleted.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all
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of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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Step Documentation EOP Rev. ES-0.2 Page 6 of _8 EOP Step: 14 Check if solid plant conditions should be established.
ERG Step: 14 Check PRZR level - no unexpected large variations.
Justification for difference:
This ERG step checks for void formation. For the HNP, the void formation check was incorporated in EOP step 13 utilizing vessel head measurement system to detect voids. Subsequent steps involve placing the RHR system in service.
-Therefore, HNP specific requirements, prior to placing RHR in service were added.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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A Step Documentation EOP Rev. ES-0.2 Page 6 of 8 EOP Step: 15 Perform cold shutdown alignment.
ERG Step: 15 Check if SI should be locked out.
Justification for difference:
Locking out SI is performed durin6 the cold shutdown alignment that is required prior to placing the RH_R system in service. Therefore, this step was reworded to be consister.t with the HNP requirements.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets wil! be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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Step Documentation EOP Rev. ES-0.3 Page 5_ of 7 EOP Step: 6 Check if solid plant conditions.eould be established.
ERG Step: None.
Justification for difference:
Subsequent steps involve placing the RHR in service. Therefore, HNP specific requirements prior to placing RHR in service were added to the procedure.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features..
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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4 Step Documentation EOP Rev. ES-0.3 Page 5 of 7 EOP Step: 7 Perform cold shutdown alignment.
ERG Step: None.
Justification for difference:
Subsequent steps involve placing the RHR in service. Therefore, HNP specific requirements prior to placing RHR in service were added to the procedure.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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Step Documentation EOP Rev. ES-0.4 Page 3,4,5,7 of M EOP Step: 3 Decrease Core Exit TCs to 5000F 5 Decrease Core Exit TCs to 4500F 10 Decrease Core Exit TCs to 4000F 15 Decrease Core Exit TCs to 3000F ERG Step: 3 Decrease RCS Hot Leg Temperatures to 5000F 5 Decrease RCS Hot Leg Temperatures to 4500F 11 Decrease RCS Hot Leg Temperatures to 4000F 15 Decrease RCS Hot Leg Temperatures to (5)0F Justification for difference:
These ERG steps involve reducing hot leg temperature to a given value. At the HNP core exit thermocouple temperatures are used to verify hot leg tempera-tures.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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Step Documentation EOP Rev. ES-l.1 Page 4 of 10 EOP Step: 12 Increase PRZR level to greater than 15% (22% for Adverse Cont.)
~ ERG Step: 12 Check PRZR level greater than 15% (22% for Adverse Cont.)
Justification for difference:
Step 11 says check greater than 10%, Step 12 says 15%. Added increase level to greater than 15% to clarify procedure.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all -
of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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Step Documentation EOP Rev. ES-1.2 Page 10 of 14 EOP Step: 18 RCS temperature less than 3000F.
ERG Step: None.
Justification for difference:
The Si reduction sequence does not allow for terminating HPSI flow and starting LPSI. If RCS temperature is less than 3000F, we can stop HPSI pumps and provide adequate cooling with LPSI pumps if additional flow is required. In addition, EOP Step 19 also verifies adequate Si flow after shutting down HPSI pumps. To accomplish this, a step 18 was added to the EOP.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for' future reference.
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Step Documentation EOP Rev. ES 3.1 Page 2 of 6 EOP Step: 2 Borate the RCS for cooldown in accordance with SUR. 5.3-19 boration requirements for reactor shutdown.
ERG Step: 2 Check if SI accumulators should be isolated.
Justification for difference:
This step in the ERG is for isolating the accumulators. This is not appropriate since the HNP does not have Si accumulators, lastead, a step giving further guidance to the operators was inserted since step 3 verifies adequate shutdown margin.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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9 Step Documentation EOP Rev. ES-3.3 Page 2 of 12 EOP Step: 2 Borate the RCS for cooldown in accordance with SUR 5.3-19 boration requirements for reactor shutdown.
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ERG Step: 2 Check if Si accumulators should be isolated.
Justification for difference:
^This step in the ERG is for isolating the accumulators. This is not appropriate since the HNP does not have Si accumulatocs. Instead, a step giving further guidance to the operators was inserted since step 3 verifies adequate shutdown margin.
EOP Writer t
Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-f tation of the process used for the entire development of the EOPs may be kept on record for future reference.
Step Documentation EOP Rev. ECA 0.0 L
Page 3 of 15 l
ERG Step: 4 Verify AFW Flow - Greater than (2) GPM Justification for difference:
AFW flow indication is lost during a station blackout. Indication available including SG level stable or increasing was added to the step to verify flow.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used.so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
Step Documentation EOP Rev. ECA 0.0 Page 6 of 15 EOP Step: 3 Dispatch personnel to locally close the following valves to isolate RCP seals.
ERG Step: 3 Dispatch personnel to locally close valves to isolate RCP seals and place valve switches in CLOSED position.
Justification for difference:
CY seal water and thermal barrier return are manual valves. Therefore, place switches in closed position was deleted.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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Step Documentation EOP Rev. ECA-0.0 Page 13,of 15 (step 25) 3 Page lj,of 15 (step 26)
EOP Step: 25 Check if SI is required (substeps attached). -
26 Establish Cherging Flow (substeps attached)
ERG Step: None Justification for difference:
' The ERGS have a check of plant conditions, then a transfer to appropriate recovery procedure.
In order to save time in recovering from the station blackout, steps were added to allow for starting SI equipment or charging flow as soon as power is restored. Then the check of plant conditions transfers to appropriate recovery procedure for subsequent actions. The steps-added are shown on the next page.
EOP Writer Date
~ The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
25 CHECK IF SIIS REQUIRED:
a.
Check RCS pressure - LESS a.
Go to Step 26.
THAN 1475 PSIG (1700 PSIG FOR ADVERSE CONTAINMENT).
b.
Start one HPSI pump and b.
Go to Step 26.
c.
Check RCS pressure - LESS c.
Go to Step 26.
THEN 405 PSIG (635 PSIG FOR ADVERSE CONTAINMENT.
d.
Start one LPSI pump and d.
Go to step 26.
open Core Deluge Valves, e.
Go to Step 27, 26 ESTABLISH CHARGING FLOW:
a.
Verify RCP seal injection -
a.
Isolate RCP seal injection.
ISOLATED.
b.
Start one Chg. pump.
c.
Control Chg. flow to maintain PRZR level.
Step Documentation EOP Rev. ECA-0.1 Page 4 of 12
. EOP Step: 6 Increase PRZR level to greater than 15% (22% for Adverse Cont.)
ERG Step: 6 Check PRZR level greater than 15% (22% for Adverse Cont.)
Justification for difference:
Step 5 says check greater than 10 Step 6 is a check greater than 15 Step 6 was changed to increase level to clarify the procedu e.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkof f sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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Step Documentation
- EOP Rev. ECA 0.1 Page 9 of 12 EOP Step: 20 Go to ES 0.2 Natural Circulation Cooldown.
ERG Step 21 Determine'if Natural Circulation Cooldown is required.
Justification for difference:
We go to ES 0.2 at. this point because there are no RCPs running.
A determination would be made there _whether to. cool down the plant or restart RCPs and continue operation.
1 EOP Writer Date __
The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all =
of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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Step Documentation EOP Rev. ECA-0.2 Page 1of5 EOP Step: 2 Verify SIInjection flow.
ERG Step: Manually align valves to establish Si injection alignment.
Justification for difference:
Si injection flow was established in ECA-0.0. Therefore, this step was reworded to verify flow.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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I Step Documentation EOP Rev. ECA 0.2 Page 4 of 5 EOP Step 5 Check charging pump.
ERG Step: 5 Check if charging /SI pump should be started.
Justification for difference:
The charging pump is started in step 26 ECA 0.0.
Therefore, this step was changed to a check of proper pump operation.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
Step Documentation EOP Rev. ECA '.1 Page 2 of 10 EOP Step: 4 Verify Containment Fan Coolers Running with Face Dampers Open ERG Step: 4 Verify Containment Fan Coolers Running in Emergency Mode Justification for difference:
Face Dampers open is the emergency mode.
4 EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
Step Documentation EOP Rev. ECA-1.1 Page 5_ of 7 EOP Step: 13 Depressurize AllIntact SGs to 50 PSIG.
ERG Step: 21 Depressurize AllIntact SGs to Atmospheric Pressure.
Justification for difference:
We maintain steam pressure at 50 psig so we can use steam driven auxiliary feed pumps to provide heat sink for RCS. This would cool the RCS to approximately 3000F and the RHR system could be placed in service.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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Step Documentation EOP Rev. ECA-2.1 Page 11 of 15 EOP Step: 34 Check if solid plant conditions should be established.
ERG Step: None.
Justification for difference:
Subsequent steps involve placing the RHR in service. Therefore, HNP specific requirements prior to placing RHR in service were added to the procedure.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-l tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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Step Documentation EOP Rev. ECA-2.1 Page 11 of 15 EOP Step: 35 Perform cold shutdown alignment.
ERG Step: None.
Justification for difference:
Subsequent steps involve placing the RHR in service. Therefore, HNP specific requirements prior to placing RHR in service were added to the procedure.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
Step Documentation EOP Rev. FR-C.1 Page 4 of 7 EOP Step: 9 Check RCS vent and drain paths - closed.
ERG Step: 10 Check RCS vent paths - closed.
Justification for difference:
This ERG step checks for RCS leakage via vent paths. A check of drain paths was added to the EOP step to further check possible sources of RCS leakage.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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Step Documentation EOP Rev. FR-C.1 Page 3,of 7 EOP Step: 12 Depressurize allintact SGs to 50 psig.
ERG Step: 14 Depressurize allintact SGs to Atmospheric Pressure.
Justification for difference:
We maintain steam pressure at 50 psig so we can use steam driven auxiliary feed pumps to provide heat sink for RCS. This would cool the RCS to approximately 3000F and RHR system could be placed in service.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
Step Documentation EOP Rev. FR-C.2 Page 5_ of 6 EOP Step: 12 Depressurize allintact SGs to 50 psig.
ERG Step: 14 Depressurize allintact SGs to Atmospheric Pressure.
Justification for difference:
We maintain steam pressure at 50 psig so we can use steam driven auxiliary feed pumps to provide heat sink for RCS. This would cool the RCS to approximately 3000F and the RHR system could be placed in service.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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Step Documentation EOP Rev. FR-C.2 Page 5,of 6 EOP Step: Step deleted.
Justification for difference:
RCPs were stopped in step 11. Therefore, this step.was not needed and was deleted.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate tl:e Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
Step Documentation EOP Rev. FR-C.3 Page 3of 3_
EOP Step: 3 Check RCS vent and drain paths - closed.
ERG Step: 3 Check RCS vent paths - closed.
Justification for difference:
This ERG step checks for RCS leakage via vent paths. A check of drain paths was added to the EOP step to further check possible sources of RCS leakage.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
Step Documentation EOP Rev. FR-H.1 Page 13 of 15 EOP Step: 25 Control charging and letdown flow to maintain RCS pressure.
ERG Step: 28 Control charging flow to maintain PRZR level.
Justification for difference:
' At this point, the PRZR is water solid. At CY, we use a combination of charging and letdown flow to maintain RCS pressure. Plant staff will have to decide whether to cool down with RCS solid or draw a bubble in the PRZR.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
s Step Documentation EOP Rev. FR-H.1 Page 14 of 15 EOP Step: Attachment A (Attached)
ERG Step: None Justification for difference:
The ERG does not include actions to attempt to get into RHR if the secondary heat sink is not recovered. The attachment provides guidance to the operators if a decision is made t3 attempt RHR entry if RCS temperatures are low enough.
A note was added prior to step 16 to alert the oeprators of this option.
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l EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedurer in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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AUG 3 01955 NUMBE4 TITLE
-Ev ISSULDME FR-H.1 RESPONSE TO LOSS OF SECONDARY HEAT SINK Original Aug. 30 1986 STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OsTAINED ATTACHMENT A Procedure to be followed in the event that plant staff decides to place RHR system in service if secondary heat sink cannot be established and RCS temperature is less than 280*F.
Initial Conditions.
1.
PRZR level 100%.
2.
HPSI and/or charging pumps operating.
3.
One or both PRZR PORVS open.
4.
RCS temperature less than 280*F.
Procedure.
1.
Check RCS subcooling greater than 32*F.
2.
Stop one HPSI pump.
3.
Allow RCS pressure to stabilize.
4.
Stop second HPSI pump.
5.
Control charging flow to maintain RCS pressure.
6.
Reduce RCS pressure to 300 psi (utilize Heise gauge to verify RCS pressure).
7.
Reset SI.
a.
Open ekts 13A and 13B in DC panels.
b.
Reset WL Switches.
8.
Place letdown system in service to control RCS pressure. Place LD valves to OPEN position. Cycle CH-MOV-257 to control VCT level 9.
Place RHR system in service in accordance with NOP 2.9-1 Placing RHR System in Service.
10.
Shut PRZR PORVS. Shift Chg pump suction to VCT.
- 11. Control RCS pressure at less than 300 psig.
[
12.
Continue plant cooldown per NOP 2.3-4.
oP5064-3 3-84 Page 14 of 15
Step Documentation EOP Rev. FR-S.1 Page 2_ of 6 EOP Step 1 Verify Reactor Trip / Trip Reactor (Attached)
ERG Step: 1 Verify Reactor Trip Justification for difference:
The ERG step was modified. The manual reactor trip buttons are pushed on every reactor trip. If the reactor still does not trip, then deenergizing the 480 volt buses that power the MG sets for the rod drives is quicker than manually i
driving the control rods.
The control rods are then manually inserted if momentarily deenergizing the buses is unsuccesful.
EOP Writer e
j Date The Writers Guide which is part of this Generation Package will be used to j
formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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VERIFY REACTOR TRIP / TRIP REACTOR:
Open and reclose 4341 and 4971.
_lf reactor will not trip, then man,::
i ually insert control rods.
o Rod bottom lights - LIT.
o Reactor trip breakers - OPEN.
o Rod position indicators - AT ZERO.
o Neutron flux - DECREASING.
3 Step Documentation EOP Rev. FR-S.!
Page 2.of 6_
EOP Step: 3 Check AFW or main feed pumps running.
ERG Step: 3 Check AFW pumps running.
Justification for difference:
Feedwater for steam generator heat removal after a reactor trip or safety injection signal is supplied by either the main feedwater or auxiliary feedwater pumps.
Therefore, this step was modified to be consistent with the plant configuration.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a unliorm pattern so that a!!
of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
Step Documentation EOP Rev. FR-S.1 Page 2 of 6 EOP Step: 13 Restore 480V distribution as necessary.
ERG Step: None.
Justification for difference:
Step added to restore power in the event that 4841 and 4971 had been opened in Step 1 RNO column.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Chect;off sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
Step Documentation EOP Rev. FRZ 3 Page 2 of 2 EOP Stept ! Verify isolation has occurred if LOCA has occurred or containment pressure greater than 5 psig.
ERG Step: 1 Verify containment ventilation isolation.
Justification for difference:
Containment vent valves are closed normally and do not isolate automatically.
Containment isolation is verified, if required, instead.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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Step Documentation EOP Rev. FRZ.1 Page2of1 EOP Step: 7 Check hydrogen concentration.
9 Step deleted.
10 Step deleted.
ERG Stept 7 Check hydrogen concentration.
9 Periodically obtain a hydrogen concentration measurement.
10 Check if hydro 6en recornbiner system...
Justification for difference:
The HNP does not have a hydrogen recombiner system. Step 7 was modified accordingly, and steps 9 and 10 were deleted.
EOP Writer Date The Writers Guide which is part of this Generation Package will be used to formulate the Emergency Operating procedures in a uniform pattern so that all of the series of procedures will have common features.
The Verification and Validation Checkoff sheets will be used so that a documen-tation of the process used for the entire development of the EOPs may be kept on record for future reference.
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