HL-3578, Record of 860630 Telcon W/R Goel & P Kadambi of NRC Re NRC Review of Fire Hazards/Safe Shutdown.Summary of Changes Incorporated Into Amend 4 to Fire Hazards Analysis Rept Encl

Record of 860630 Telcon W/R Goel & P Kadambi of NRC Re NRC Review of Fire Hazards/Safe Shutdown.Summary of Changes Incorporated Into Amend 4 to Fire Hazards Analysis Rept Encl

ML20202F683
Person / Time
Site:	South Texas
Issue date:	06/30/1986
From:	Powell M HOUSTON LIGHTING & POWER CO.
To:
References
ST-HL-HL-35783, NUDOCS 8607150215
Download: ML20202F683 (5)

Text

So-4is

' HOUSTON UGHTING & POWER COMPANY '

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Y TELEPHONE MINUTES M. R. Wisenburg COR RESPONDENCE SERI AL NUMBE R TO: . .

ST-HL-HL-35783 FROM: SUBJECT FILE NUMBERS June 30', 1986 C9.4 DATE OF CALL: PRIMARY: SECONDARY-NRC Review of Fire Hazards / Safe Shutdown

SUBJECT:

TELECON PARTICIPANTS:

M. E. Powell (HL&P) R. Goel (USNRC)

G AN ZAT ON OF EACH)

A. Guidry (BEC) PAGE 1 OF 4 The above participants participated in a conference call on June 30, 1986 regarding the NRC review of the Fire Hazards Analysis Report (FHAR) and safe shutdown . The purpose of the call was to provide responses to comments / questions that the NRC had in a previous conference call (reference ST-HL-HL-35769) . A summary of the questions and responses is as follows:

1 Question (1):

Mr. Goel requested that a copy of the report No. 5A019MFP001 titled, " Post Fire .

Operator Actions and Equipment Protection Requirements" be made available in the Bethesda Licensing Office as soon as possible.

Response: We have provided Mr. Goel with an informational copy of the subject report through the Bethesda Licensing Office..

Question (2):

Mr. Goel questioned if repairs are required to achieve cold shutdown?

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Response: Section 4.1, Pg. 4.1-36, Item III.L.5 states that " Repair procedures for systems necessary to achieve and maintain cold shutdown using the " Appendix R Required" single safe shutdown pathway will be. generated as required". To date, there are no requirements for repairs.

Mr. Goel stated that eventually be would need confirmation as to whether or not cepairs are required to achieve cold shutdown since this is one of the areas that he nas to sign-off on. Mr. Goel also stated that if repairs are required, then we need to make sure that the material that is required for any repair is available and dedicated for that purpose.

Ll/Telmin/ee 8607150215 860630 PDR ADOCK 05000498 g I F PDR STP-1C3(6-79)

' HOUSTON UGHTING G POWER COMPANY SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION TELEPHONE MINUTES M. R. Wisenburg CORRESPONDENCE SERI AL NUMBER TO: ST-HL-HL-35783 M. E. Powell FROM: SUBJECT FILE NUMBERS June 30, 1986 G9.4 DATE OF CALL: PRIMARY: SECONDARY-NRC Review of Fire Hazards / Safe Shutdown

SUBJECT:

TELECON PARTICIPANTS:

M. E. Powell (HL&P) R. Goel (USNRC)

="A~a'a" face c n Tur=er catsr> P x a =bt (usnac)

A. Guidry (BEC) PAGE 2 OF 4 Question (3):

Mr. Goel questioned if there were any scenarios (other than a control room fire) where you need to use the Auxiliary Shutdown Panel (ASP)?

Response: There are currently no other scenarios, other than a control room fire, where you need to use the ASP. The only instance currently in the FHAR where

4. requirement to use the ASP exists is for Fire Area (FA) 1 (reference Section 3.2 of the FHAR).

Question (4):

Mr. Goel questioned if we can achieve cold shutdown within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />?

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Response: As stated in Section 4.1 of the FHAR (Page 4.1-33, STP does have the capacity to achieve cold shutdown conditions within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> and maintain cold I shutdown conditions thereafter.

Questions (5):

Mr. Goel questioned if we could identify all high/ low pressure interfaces in the FHAR?

Response: A commitment was made to include the subject information in tabular form in Amendment 4 to the FHAR. Mr. Goel then requested that the table include a remarks column in which one could determine how the high/ low pressure interfaces were resolved. A commitment was made to include the requested information.

L1/Telmin/ee STP-103(6-79)

l

, HOUSTON UGHTING & POWER COMPANY l SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION l I

TELEPHONE MINUTES M. R. Wisenburg CORRESPONDENCE SERI AL NUMBER j TO: ST-HL-HL-35783 1 M. E. Powell FROM: SUBJECT FILE NUMBERS June 30, 1986 G9.4 DATE OF CALL: PRIMARY: SECONDARY-NRC Review of Fire Hazards / Safe Shutdown 1

SUBJECT:

I TELECON PARTICIPANTS:

M. E. Powell (HL&P) R. Goel (USNRC)

GAN ZAT ON OF EACH) l A. Guidry (BEC) PAGE 3 OF 4 Question (6):

Mr. Goel questioned if transfer switches have alternate fuses?

Response: The transfer switches in use at STP have alternate fuses.

Question (7):

Mr. Goel questioned if a copy of circuit drawings for both power and control ,

I circuits for typical transfer switches could be made available? )

Response: A commitment was made to provide Mr. Goel with copies of the requested J I

drawings. In addition it was noted that only control circuits have alternate fuses,  ;

i not power circuits.

Question (8):

Mr. Goel questioned if there are any electrical " interties" between trains such that a failure of a breaker could loose more than one (1) train. He indicated that he was primarily concerned about an

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'N' circuit being tied between 'A', 'B' or 'C' circuit or if a spurious actuation could propagate from an 'A' circuit to a 'B' circuit through an 'N' circuit.

Response: There are no " interties" between trains. ,

1 Question (9):

Mr. Goel requested that more detailed information on the ASP and transfer switch l

panels be placed in the FHAR.

L1/Telmin/ee STP-103(6-79)

i

HOUSTON LIGHTING G POWER COMPANY j SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION TELEPHONE MINUTES M. R. Wisenburg CORRESPONDENCE SERI AL NUMBE R TO: 1 M. E. Powell FROM: SUBJECT FILE NUMBERS June 30, 1986 G9.4 DATE OF CALL: PRIMARY: SECONDARY-NRC Review of Fire Hazards / Safe Shutdown TELECON PARTICIPANTS:

M. E. Powell (HL&P) R. Goel (USNRC)

IINCLUDE NAME AND ORGANIZATION OF EACH)

C. M. Turner (HIAP) P. Kadambi (USNRC)

A. Guidry (BEC) PAGE 4 OF 4 Response: Per previous conversations between Prasad, C. Turner & I, we have egreed to incorporate a reference in the FHAR to the FSAR Sections where the subject information is already discussed in detail. Mr. Goel indicated that this was acceptable.

l In Addition, Mr. Goel had previously requested a breakdown of the changes being incori.arated in FHAR amendment 4. The attached list was telecopied to him on June 20, 1986.  ;

l nrrfyc  ;

cc: A. W. Harrison C. M. Turner C. Wren M. A. McBurnett S. Eldridge A. Guidry (BEC)

P. G. Trudel (BEC)

I. Roberson (Bethesda Licensing Office)

R. Sweeney (Bethesda Licensing Office) dirims u)

L1/Telmin/ee STP-103(6-79)

4 Attachment ST-HL-HL-35783 File No.: G9.4 Page 1 of 1 Summary of Amendment 4 Revision

1. Update " Redundant Safe Shutdown Assessment" section for each area to reflect latest evaluation results.

2. Adds evaluation of Spurious - Operation of Equipment (SOE) components to Redundant Safe Shutdown Section Assessment.

3. Adds evolution of high/ low pressure interface components to Redundant Safe Shutdown Ascessment sections.

4. Revise applicable fire area drawings to reflect addition of 16 sprinkler systems in MEAB.

5. Revise applicable fire area drawings to identify those systems which are property protection only.

6. Delete Lewis Barbe's resume.

7. Revise Table 2-2 and 2-3 and associated zone tables to incorporate HL&P and Impell comments.

8. Add section 3.1.4 to clarify the STP Redundant Safe Shutdown philosophy.

9. Clarify wording on page 4.2 - 44a and 4.2-44b to reflect walkdown results.

Ll/Telmin/ee

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