ACCELERATED ILTRIBUTION DEMONS(ATION SYSTEM

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:8911060035 DOC.DATE: 89/10/30 NOTARIZED: YES DOCKET # FACIL:50-361 San Onofre Nuclear Station, Unit 2, Southern Californ 05000361

50-362 San Onofre Nuclear Station, Unit 3, Southern Californ 05000362 AUTH.NAME AUTHOR AFFILIATION NANDY,F.R. Southern California Edison Co. RECIP.NAME RECIPIENT AFFILIATION

Document Control Branch (Document Control Desk) R

SUBJECT: Responds to Generic Ltr 88-14, "Instrument Air Sys."

DISTRIBUTION CODE: A048D COPIES RECEIVED:LTR ENCL/ SIZE: D TITLE: OR/Licensing Submittal: Equipment Qualification

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RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL A

PD5 LA 1 0 PD5 PD 1 0 KOKAJKO,L. 1 1 D

INTERNAL: ACRS 6 6 NRR/DEST/MEB 9H 1 1 NRR/DEST/SGB 8D 1 1 NUDOCS-ABSTRACT 1 1 D

1 0 OGC/HDS2 1 1 01 1 1 RES/DSIR/EIB 1 1 S

EXTERNAL: LPDR 1 1 NRC PDR 1 1 NSIC 1 1

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NOTE TO ALL "RIDS" RECIPIENTS: D

S PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINATE YOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED: LTTR 19 ENCL 16

Southern California Edison Company 23 PARKER STREET

IRVINE. CALIFORNIA 92718

F. R. NANDY October 30, 1989 TELEPHONE MANAGER OF NUCLEAR LICENSING (714) 587-5400

U. S. Nuclear-Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555

Gentlemen:

Subject: Docket Nos. 50-361 and 50-362 Response to Generic Letter 88-14, "Instrument Air" San Onofre Nuclear Generating Station Units 2 and 3

This letter provides SCE's response to NRC Generic Letter 88-14, "Instrument Air Systems." This Generic Letter requested each Licensee to review NUREG-1275, Volume 2, and to perform a design and operations verification of the instrument air system. SCE has reviewed NUREG-1275, Volume 2 and has performed the requested verification program for the instrument air system at San Onofre Units 2 and 3 which is detailed in the enclosed report. The enclosed report includes:

1. Verification that the actual instrument air quality is consistent with the manufacturer's recommendations for the individual components served. SCE performed this verification through a review of the startup testing program for the instrument air system and found that the startup test procedures and records were sufficient to satisfy the testing requirements of Generic Letter 88-14. No additional testing was needed to satisfy the requirements of this Generic Letter. (See Report Sections 6.2, 6.3 and 7.3)

2. Verification that maintenance practices, emergency procedures and training are adequate to ensure that safety-related equipment will function as intended on a loss of instrument air. As a result of this verification effort, SCE identified potential improvements to maintenance program and the emergency operating instructions (EOIs). SCE has updated the EOIs and enhancements to the instrument air maintenance program are under consideration. (See Report Sections 5, 9 and 10)

3. Verification that the design of the entire instrument air system including air or other pneumatic accumulators is in accordance with its intended function, including verification by test that airoperated safety-related components will perform as expected in accordance with all design-basis events, including a loss of the

8911060035 891030 PDR ADOCK 05000361 P PDC )

Document Control Desk -2- October 30, 1989

normal instrument air system. SCE's design verification included an analysis of current air operated component failure positions and reverifies that they are correct for assuring required safety functions. (See Report Sections 6, 7.1, 7.2 and 8)

The Generic Letter also requested each Licensee to provide a discussion of their program for maintaining proper instrument air quality. In response, the enclosed report also provides a discussion of SCE's program for maintaining proper instrument air quality (Report Sections 5 and 7).

As stated in Section 7.2 of the enclosed report, SCE will be installing isolation valves and test connections in the instrument air backup nitrogen system to allow testing of the backup nitrogen system isolation check valves during the Cycle 5 refueling outages for Units 2 and 3 (Unit 2 is currently in its Cycle 5 refueling outage; Unit 3 is scheduled to begin its Cycle 5 refueling outage in April 1989). Consistent with the requirements of Generic Letter 88-14, SCE will submit notification to the NRC when these modifications have been completed.

If you have any questions, please contact me.

Respectfully submitted,

By: 'F. R. Nandy Manager of Nuclear Licensing

Subscribed and sworn to before me this 30th day of October, 1989

OFFICIAL SEAL (AROL A. 6OMEZ

NOTARY PUBLIC -CAUFORNIA LOS ANGELES COUNTY

* My Comm. Expires Fob. 26, 1993

Notary Public in and for the State of California

Enclosure

cc: J. B. Martin, Regional Administrator, NRC Region V C. Caldwell, NRC Senior Resident Inspector, San Onofre Units 1, 2 and 3

M-89049

RESPONSE TO

GENERIC LETTER 88-14

INSTRUMENT AIR SUPPLY SYSTEM PROBLEMS

AFFECTING SAFETY RELATED SYSTEMS

SOUTHERN CALIFORNIA EDISON COMPANY

SAN ONOFRE NUCLEAR GENERATING STATION

UNITS 2 & 3

TABLE OF CONTENTS

1. INTRODUCTION 1

2. SUMMARY AND CONCLUSIONS 1

3. DESCRIPTION OF SONGS 2 AND 3 INSTRUMENT 2 AIR SYSTEM

4. LIST OF QUALITY CLASS I AND II COMPONENTS 3 SERVED BY INSTRUMENT AIR

5. PREVENTATIVE MAINTENANCE PROGRAM FOR THE 4 INSTRUMENT AIR.SYSTEM

6. REVIEW OF INSTRUMENT AIR SYSTEM ADEQUACY 4

6.1 COMPRESSOR AND DRYER CAPACITY 4

6.2 DEWPOINT 5

6.3 PARTICULATE SIZE 5

7. TEST REQUIREMENTS 5

7.1 LOSS OF AIR FAILSAFE POSITION TESTING 6

7.2 TESTING OF BACKUP NITROGEN SYSTEM ISOLATION 6 CHECK VALVES

7.3 AIR QUALITY MONITORING 6

8. FAILURE MODES AND EFFECTS ANALYSIS 7

9. EMERGENCY OPERATION INSTRUCTIONS AND 7 OPERATOR TRAINING

9.1 RECOMMENDATION TO ENHANCE PROCEDURE 8

10. MAINTENANCE PERSONNEL TRAINING 8

11. REFERENCES 8

1. INTRODUCTION

The USNRC issued Generic Letter 88-14, Instrument Air Supply Problems Affecting Safety-Related Equipment, (Reference 11.1) in August of 1988. This letter expressed NRC concerns that the performance of air operated safety related components may not be in accordance with their intended safety function because of deficiencies in the design, installation and maintenance of the instrument air system. The letter also indicated that anticipated transient and system recovery procedures are frequently inadequate and that operators are not well trained for coping with a loss of instrument air conditions.

The letter requested a design and operations verification to include the following:

1. Verification by test that actual instrument air quality is consistent with manufacturer's recommendations for individual components served.

2. Verification that maintenance practices, emergency procedures, and training are adequate to ensure that safety related equipment will function as intended on a loss of instrument air.

3. Verification that the design of the entire instrument air system including air or other pneumatic accumulators is in accordance with its intended function, including verification by test that air operated and safety related components will perform as expected in accordance with all design basis events, including a loss of normal instrument air system. This design verification should include an analysis of current air operated component failure positions to verify that they are correct for assuring required safety functions.

2. SUMMARY and CONCLUSIONS

Southern California Edison Company established a Task Force to evaluate and respond to the requirements of Generic Letter 88-14. The following activities were undertaken in response to NRC concerns regarding instrument air in Generic Letter 88-14 and NUREG 1275 (Reference 11.2) with the indicated results.

2.1 A list of safety related components served by the Instrument Air System was established.

2.2 The SONGS 2/3 Instrument Air System was reviewed for design adequacy, including air quality, dryer capacity and adequacy of the separate Backup Nitrogen System to the Atmospheric Dump Valves (ADVs).

2.3 A Failure Modes and Effects Analysis, was conducted for the safety related components operated by instrument air.

2.4 The initial and periodic test requirements for air quality and failsafe operation were identified.

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2.5 Requirements were developed for the isolation check valves for the Atmospheric Dump Valves Backup Nitrogen System for incorporation into the SONGS 2/3 Section XI Test Program.

2.6 The Operations Procedure for Loss of Instrument Air was reviewed and a recommended enhancement to this procedure was implemented.

2.7 The training requirements for operators and maintenance personnel were reviewed and found to be adequate.

2.8 Loss of instrument air failsafe position testing performed during the initial startup test program was reviewed to determine the need for additional testing.

2.9 Maintenance practices and procedures have been reviewed and found to be adequate.

The conclusion is that the Instrument Air System at SONGS 2/3 provides a reliable source of clean air to all Safety Related pneumatic valves and the plant operators are well trained and equipped to deal with a loss of instrument air. The current preventative maintenance practices are adequate to maintain the reliability of the Instrument Air System. The loss of air failsafe position testing conducted during plant startup was adequate to meet the testing requirements of Generic Letter 88-14.

3. DESCRIPTION OF SONGS 2/3 INSTRUMENT AIR SYSTEM

SONGS 2 and 3 share a common Instrument Air System. This system was designed to provide a reliable, continuous supply of filtered, dry and essentially oil free compressed air for pneumatic instrumentation, controls and valve operators. The Instrument Air System includes three identical 100% capacity air compressor trains. Each train includes the following equipment:

1. An Air Intake filter and silencer 2. Two Stage Compressor Unit 3. Intercooler and Aftercooler with Moisture Separator 4. Air Receiver 5. Interconnecting Piping and Valving

During normal plant operation, one of the compressors is selected for continuous operation (LEAD), and serves the instrument air demands. The second compressor serves as a standby (LAG-1). The third compressor is used as a second standby (LAG-2).

Air from within the Turbine Building is drawn in through the filter/silencer and directed to the first stage of the air compressor. The air is compressed and sent to the intercooler. The intercooler cools air and sends it to the second stage of the compressor. The second stage of the compressor again compresses the air and sends it to the aftercooler.

The -aftercooler cools the air and directs it to the Air Dryers. The moisture separator removes the moisture from the air and sends it to the air receiver.

2

There is one air receiver for each air compressor. The three compressors are connected in parallel by a common header on the discharge side. The common discharge feeds the Instrument Air System.

Air from the common air header is directed to one of two refrigerant based instrument air dryers. The instrument air dryer separates and removes moisture from the air. Downstream of the moisture separators is a check valve followed by a branch line connection coming from the Nitrogen Backup Supply System.

Dry air (and/or nitrogen) is then directed to three of four air filters. The air filters remove particulates from the air. The air then goes to branch connections to each of the two operating units.

There are flow restricting orifices in each of these branch lines downstream of the instrument air filters. The flow restrictors limit air flow in the event of a downstream line rupture. Individual instrument air lines tap off of each unit's instrument air header. Instrument air is directed to all instrument air connections throughout the plant including those within the Containment Building.

The Instrument Air header pressure is constantly monitored by way of an alarm in the Control Room. In addition, a second alarm will annunciate in the event that the Backup Nitrogen System is required to maintain instrument air header pressure.

Instrument air to Containment passes through an excess flow check valve which will isolate air flow to Containment in the event of a high flow demand.

The Service Air System at SONGS 2/3 is completely separate from the Instrument Air System. The Service Air System has it own dedicated compressors and filters. The primary function of the Service Air System is to provide service air and breathing air for the plant. An additional function is to provide pressurized air to the Spent Fuel Pool Gate Seals. These seals are also provided with dedicated Backup Nitrogen Systems.

A diagram of the SONGS 2/3 Instrument Air System is illustrated in Attachment 1, SONGS 2/3 INSTRUMENT AIR SYSTEM.

4. LIST OF QUALITY CLASS I AND II COMPONENTS SERVED BY INSTRUMENT AIR

The list of safety related components serviced by instrument air was developed by using the Piping and Instrument Diagrams (P&ID's) to trace all of the lines coming off the Instrument Air System. This list includes the components listed in the Updated FSAR (Reference 11.5) Table 9.3-1, Pneumatically Operated Valves that have a Safety Function, and the pneumatically operated Containment Isolation Valves and other valves which are relied on in the Emergency Operation Procedures.

The list that was developed includes the component designation, the system in which the component is used, the function of the component, the P&ID number, the vendor, the vendor model number, the failsafe position and an indicator as to whether or not the component is subjected to a periodic failsafe position test to verify the adequacy of the inline air

3

accumulators. This list is included as Attachment 2, GENERIC LETTER 88-14, INSTRUMENT AIR COMPONENTS FOR SONGS 2 and 3.

5. PREVENTATIVE MAINTENANCE PROGRAM FOR THE INSTRUMENT AIR SYSTEM

Operations Procedure S023-0-9, Operator Rounds and Inspections, requires a periodic walkdown and inspection of the instrument air compressors, dryers and air filters. In addition, a computer based maintenance management system is used to ensure that the following annual preventative activities are accomplished on an annual basis:

REPETITIVE MAINTENANCE MAINTENANCE ACTIVITY ORDER NUMBER

10000174 Refrigeration System Inspection and Adjustment

110080860 Air Filter Replacement

10018036 Compressor Oil, Intake Filter and Air Regulator Replacement

The Preventative Maintenance Program also requires a five year overhaul of the Instrument Air Compressors. The details of this overhaul are contained in Repetitive Maintenance Order Number 10000175.

In addition to the Preventative Maintenance Program activities discussed above, further enhancements to the Instrument Air portion of the program are under consideration. These enhancements would add the Fisher 67FR filter regulators used on pneumatic control valves to the preventative maintenance program.

In view of the above, the Preventative Maintenance Program for the SONGS 2/3 Instrument Air System is considered adequate.

6. REVIEW OF INSTRUMENT AIR SYSTEM DESIGN ADEQUACY

After completing a review of the concerns expressed in Generic Letter 88-14 and NUREG-1275 (Reference 11.2), the Generic Letter 88-14 Task Force conducted a review of the design adequacy of the SONGS 2/3 Instrument Air System. The review concentrated on the capacity of the Instrument Air System with a special emphasis on the capacity of the air dryer, the acceptability of the design dewpoint and particle size rating of the particulate filters.

6.1 Compressor and Dryer Capacity

As originally designed, one of the three 800 SCFM double stage, non lubricated air compressors operated almost continuously to supply the normal instrument and service air requirements for both Units 2 and 3. The design assumptions were 600 SCFM for instrument air and 1,062 SCFM for service air. With the completion of the new Service and Breathing Air Systems, the original compressors now supply only the instrument air requirements.

4

The total instrument air demand for Units 2 and 3 under normal operating conditions is approximately 380 SCFM with the lead compressor loading only to 50% and system pressure varying between 106 and 110 PSIG.

If instrument air demand should increase up to the design limit of each of the air dryers, 650 SCFM, then the lead air compressor will run continuously at 50% load and intermittently load to 100%, or 800 SCFM, with system pressure varying between 102 PSIG and 106 PSIG.

The actual Instrument Air System demand of 380 SCFM is well within the original design demand of 600 SCFM, the lead compressor capacity of 800 SCFM, the 650 SCFM capacity of each dryer and the 800 SCFM combined capacity of the filters.

6.2 Dewpoint

The installed air dryers are the refrigerant type and are designed to reduce the pressure dewpoint at 100 PSIG to 350F. This is 1'F below the minimum design temperature of 360F obtained from subparagraph 2.3.2.3.A.5 of Reference 11.5. The basis for this minimum design temperature is a report from the American Society of Heating, Refrigerating and Air Conditioning Engineers (Reference 11.3).

Historically, the Instrument Air System at SONGS 2 and 3 has performed well and there have been little or no problems related to moisture. Therefore, the current design dewpoint of 35'F is adequate.

6.3 Particulate Size

The NRC requested a survey of suppliers of equipment that use instrument air to ensure that the air quality in the Instrument Air System meets or exceeds supplier specifications. Information regarding supplier recommendations was obtained from the following documents: (1) The Turkey Point survey reported in Table 4 of NUREG-1275, and (2) The survey reported in the Independent Safety Evaluation Group (ISEG) Field Evaluation, FE 88-001, Units 1, 2, 3, Instrument Air (Reference 11.4).

The above surveys resulted in determination of particulate size limits from typical equipment suppliers such as Fisher-Governor, Continental, Valtec, Masonellian, and Asco. A typical maximum particle size obtained during these surveys was 40 microns. The present 5 micron filters at SONGS 2/3 meet or exceeds the requirements of all vendors surveyed. The operating history at SONGS 2/3 indicates that these filters are adequate.

Therefore, the present design of 5 microns is adequate to ensure the particulate matter does not interfere with the proper operation of components served by the Instrument Air System.

7. TEST REQUIREMENTS

The Generic Letter Task Force evaluated the need for testing the Instrument Air System and the safety related components that depend on instrument air. Testing requirements were considered for verification of the loss of air failure position for safety related pneumatic valves, determination of

5

dewpoint, determination of particulate size, and determination of leakage in safety related Backup Nitrogen System isolation check valves.

7.1 Loss of Air Failsafe Position Testing

Generic Letter 88-14 included a requirement to verify by test ,the failsafe position of safety related pneumatic valves upon loss of instrument air. Numerous problems have been reported in the industry which can be attributed to inadequate design, equipment malfunctions or misunderstandings on the part of the plant staff about the actual failsafe position of a valve.

Testing of pneumatic valves to verify their fail safe position was part of the Startup Testing Program at SONGS 2/3 in the early 1980's. Based on the Loss of Air Failsafe Position Test Program and a review of the records generated by this program, it was concluded that the fail safe position of the pneumatic valves at SONGS 2/3 has been verified and that no further testing of this nature is required. Attachment 2 to this report indicates which Instrument Air System components are required to be tested in accordance with San Onofre's Inservice Testing of Valves Program (Reference 11.7). This is reflected in the "Section XI Testing Requirements" Column of Attachment 2. This status of Instrument Air System component testing to satisfy the requirements of Generic Letter 88-14 is provided in Attachment 2 column "Loss of Air Failsafe Test Status." These tests were completed during startup per the requirements of Reference 11.11.

7.2 Testing of Backup Nitrogen System Isolation Check Valves

The Atmospheric Dump Valves (ADVs) at SONGS 2/3 are protected from loss of instrument air by a safety related Backup Nitrogen System. Each of these valve actuators are connected to nitrogen bottles that are sized to provide an adequate nitrogen inventory for a plant cooldown using ADVs. Check valves are used to isolate the Safety Related Nitrogen Backup System from the Instrument Air System. Each nitrogen bottle has a specified minimum pressure that must be maintained to ensure that an adequate inventory of nitrogen is available.

In order to verify that the leakage from these check valves is within acceptable limits, they will be included in the SONGS 2/3 ASME Section XI Test Program (Reference 11.7). This will result in subjecting these valves to leakage testing on a refueling outage basis. The isolation valves and test connections necessary to conduct this testing will be installed during the Unit-2 and 3 Cycle 5 refueling outages (See Reference 11.8.)

7.3 Air Quality Monitoring

Industry experience has indicated that there are three substances that are regarded as detrimental to proper instrument functioning. They are moisture, hydrocarbons and particulate matter. Moisture is introduced into the Instrument Air System as a normal component of the air being drawn into the system. Particulate matter can be introduced at the intake of the compressors or be created by corrosion of the carbon steel system components or breakdown of desiccant in air dryers.

6

Hydrocarbons are introduced into the system if the compressors are oil lubricated.

SONGS 2/3 uses 5 micron filters which will filter out all of the particulate matter that is large enough to be of concern. The compressors are not oil lubricated; therefore, hydrocarbons should not be of any concern. The Instrument Air System components and piping downstream of the dryers are constructed of copper or stainless steel; therefore, corrosion products are not a problem. In addition, SONGS 2/3 uses refrigerant dryers; therefore, the breakdown of desiccant is not a problem. Because of the confidence in the adequacy of the 5 micron filters and the lack of any reasonable monitoring technology, monitoring of particulate size is not being conducted.

An assessment of the history of the Instrument Air System at SONGS 2/3 indicated that moisture is not a significant air quality problem and that the actual instrument air quality is consistent with applicable standards. To ensure that moisture does not become a problem, the Instrument Air System dewpoint is monitored on a periodic basis per the requirements of the Operations Procedure, S0123-0-9, Operator Rounds and Inspections (Reference 11.10). Blowdowns of the Instrument Air System have resulted in blowing out small amounts of moisture from system drains and traps which have not resulted in deleterious conditions for the Instrument Air System.

8. FAILURE MODES AND EFFECTS ANALYSIS

A Failure Modes and Effects Analysis (FMEA) was performed on each of thevalves listed in Attachment 2.

The following results were obtained from this analysis:

(1) A total loss of instrument air does not prevent accident mitigation and safe shutdown.

(2) The currently assumed failsafe positions for all pneumatic operated valves are required failsafe positions.

(3) The FMEA determined that there are no changes necessary in the pneumatic valve systems of SONGS-2/3.

The Failure Modes and Effects Analysis is documented in Reference 11.9.

9. EMERGENCY OPERATING INSTRUCTIONS AND OPERATOR TRAINING

Operators receive instrument air system training via Lesson Plan 2XQ107-2. In addition, Unit 2/3 Operations Abnormal Operating Instruction, S023-13-5, Loss of Instrument Air, provides guidance in considerable detail as to the immediate and subsequent operator actions to be taken upon loss of instrument air. This procedure tells the operator what symptoms will indicate trouble with the instrument air system, it provides criteria for the appropriate corrective action and directs the operator as to when to commence an orderly shutdown or trip the reactor. In addition, this procedure now incorporates a Generic Letter 88-14 Task Force recommendation

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to determine the condition of the Steam Generator Nozzle Dams and the Refueling Cavity Seal if Instrument Air is lost in Mode 6.

The Nuclear Training Division provides initial qualification and requalification training on S023-13-5 as part of the licensed operator training. Lesson Plans 2RS727 and 2RI714-2 are utilized to provide this training. In addition, pre-licensed operator simulator training on a loss of instrument air scenario is provided by Lesson Plan 2AO705-2.

10. MAINTENANCE PERSONNEL TRAINING

The Nuclear Training Division provides Instrument Air System Training to non-licensed personnel such as engineers, craftsmen, technicians and electricians. This training is provided using Lesson Plans T2SY10, Plant Systems Course - Auxiliary and Miscellaneous Systems, and T2SY35, Basic Plant Systems.

Both of these courses provide an overview of the Instrument Air System, discuss the basic purposes, operation and design features of the system, and explain the functioning of the major components such as the compressors, dryers, filters and distribution headers.

11. REFERENCES

11.1 United States Nuclear Regulatory Commission Generic Letter 88-14, Instrument Air Supply System Problems Affecting Safety-Related Equipment, August 8, 1988

11.2 United States Nuclear Regulatory Commission Office for Analysis and Evaluation of Operational Data, NUREG-1275, Volume 2, Operating Experience Feedback Report - Air Systems Problems, December 12, 1987

11.3 Recommended Outdoor Design Temperatures, Southern California, Arizona, Nevada, published by the Southern California Chapter of American Society of Heating Refrigerating and Air Conditioning Engineers, Inc. (ASHRAE) Fourth Edition, October 1972.

11.4 Southern California Edison Company, Independent Safety Evaluation Group, FE-88-001, Field Evaluation Units 1, 2 and 3, Instrument Air Systems

11.5 Southern California Edison Company, San Onofre Nuclear Generating Station Units 2 and 3, Updated Final Safety Analysis Report, Revision 3

11.6 San Onofre Nuclear Generating Station System Description, SD-S023570, SONGS 2/3 System Description for Service and Instrument Air, Revision 0, dated June 30, 1986

11.7 San Onofre Nuclear Generating Station Units 2 and 3, S023-V-3.5, Inservice Testing of Valves Program, Revision 7, dated July 6, 1988

11.8 Design Change Package 6753.0 SM, Leak Test of Backup Nitrogen Check Valve Connection, Revision 0, dated June 6, 1989

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11.9 Memorandum for File, SONGS 2 and 3 Instrumentation Air System Evaluation, dated January 13, 1989

11.10 Operations Procedure, S0123-0-9, Operator Rounds and Inspections, Revision 0, through TCN 20, July 24, 1989

11.11 GT-300-39, Generic Test Procedure for Control Valves, Revision 1, San Onofre Nuclear Generating Station, dated December 18, 1978.

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ATTACHMENT 2, GENERIC LETTER 88-14 PNEUMATIC VALVES LIST FORSONGS 2 AND 3

-------- I--------------g........------------------------ ------------ ----------------------- I------I-------------- I--------I---- -COMPONENT I SYSTEM I FUNCTION OF COMPONENT I P&ID I NORMAL I FAILSAFE ! VENDOR I SECTION XI I PERIODIC I LOSS OF AIR! DESIGNATION! I I I OPERATING I POSITION I MODEL I TESTING I LOSS OF AIR I FAILSAFE ! -. . 1 I POSITION I ! NUMBER I REQUIREMENTS I FAILSAFE TESTI TEST STATUS! -!------------!------------- ------------- !--------------- ------------ -------------- -------------- ----------- ------- I--------- --------------- -----------HV-6200 I SALTWATER I SALTWATER PUMP DISCHARGE I 40126A I OPEN I OPEN I FISHER I STROKE OPEN I QUARTERLY I COMPLETED 1

COOLING I ISOLATION VALVE !I 486U-1-161 FAIL SAFE I I

I HV-6201 I SALTWATER I SALTWATER PUMP DISCHARGE I 40126A I CLOSED I OPEN I FISHER I STROKE OPEN I QUARTERLY I COMPLETED COOLING I ISOLATION VALVE I I! 486J-1-16! FAIL SAFE I I ! I I I ! I

I HV-6202 I SALTWATER I SALTWATER PUMP DISCHARGE I 401268 1 CLOSED I OPEN I FISHER I STROKE OPEN I QUARTERLY ! COMPLETED 1 I COOLING I ISOLATION VALVE I I 1 1 6710 I FAIL SAFE I !

I I I!!6710 I FA L S FI !I ! HV-6203 I SALTWATER I SALTWATER PUMP DISCHARGE I 40126B I CLOSED I OPEN I FISHER I STROKE OPEN I QUARTERLY I COMPLETED 1 1I COOLING I ISOLATION VALVE I 1 N 16710 I FAIL SAFE I Q

II I I 6I FA L S I HV-6212 I CCW I NON CRITICAL LOOP I 40127D I OPEN I CLOSED I FISHER I STROKE CLOSED I COLD SHUTDOWN COMPLETED I I I I RETURN ISO VALVE I ! I 19211 1 FAIL SAFE I

I HV-6213 I CCW I CCW TO NON CRIT LOOP FROMI 40127D I CLOSED I CLOSED I FISHER I STROKE CLOSED I COLD SHUTDOWNI COMPLETED I I CRIT LOOP B ISO VALVE I I 1 1 9211 1 FAIL SAFE I I ! I I I! 21 I FALSF ! I 1

I HV-6218 I CCW I CCW TO NON CRIT LOOP FROMI 40127A I OPEN I CLOSED I FISHER I STROKE CLOSED I COLD SHUTDOWNI COMPLETED I I I CRIT LOOP A ISO VALVE I I I I 9211 1 FAIL SAFE I I II I I I I I I 1 ! I HV-6219 I CCW I NON CRIT RETURN TO CRIT I 40127A I CLOSED I CLOSED I FISHER I STROKE CLOSED 1 COLD SHUTDOWN COMPLETED ! I I LOOP B ISO VALVE I 1 ! I 9211 I FAIL SAFE I I

I HCV-6537 I CCW I CCW PUMP MINIFLOW LINE I 40127A I CLOSED I CLOSED i FISHER I STROKE CLOSED I QUARTERLY I COMPLETED I I I I I I 9210 I FAIL SAFE I I

I HCV-6538 I CCW I CCW PUMP MINIFLOW LINE I 40127A I CLOSED I CLOSED I FISHER I STROKE CLOSED ! QUARTERLY I COMPLETED

PAGE 1

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