ML19254B436
| ML19254B436 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 09/05/1979 |
| From: | Feit R NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Harrison G, Long C, Notley D Office of Nuclear Reactor Regulation, NRC OFFICE OF STANDARDS DEVELOPMENT |
| Shared Package | |
| ML19254B435 | List: |
| References | |
| NUDOCS 7909270635 | |
| Download: ML19254B436 (4) | |
Text
L Fi re Protection Review Group Meeting Report Name of Author:
Ronald Feit Date and Place:
August 21, 1979; Bethesda, Maryland
Purpose:
To discuss plans for the Rancho Seco Replication Test Discussion of Previous Action Items:
The action items from the last meeting were discusssd with the following disposition :
1.
Sylvester distributed drawings of the makeup pump room along with the Sa fety Evaluation Report prior to the meeting.
These were discussed during the meeting and it was agreed that the remaining questions concerning the replication test would have to be resolved during the site visit.
The site visit is scheduled for September 17 and 18.
2.
Harrison presented same preliminary findings on expected sprinkler response times.
Although the response time could probably be predicted within plus or minus one minute, separate e f fects testing will be requi red to obtain the accuracy required for the replication test.
It was concluded that additional analysis is not required at this time, however, this issue will be reconsidered during the site visit.
3.
It was agreed at the previous meeting and reaffirmed at the Auaust 21 meeting that the utility should be requested to perform a fire drill to determine the brigade response time for use in the replication test.
Sylvester will make arrangements for this drill and if possible, have the drill conducted during the site visit.
RSR was requested to send a letter to IE requesting a fire protection audit of the makeup pump room.
This audit will help determine the mockup configuration and types fhg[f. f1Te h a z a rd s.
(The RSR response was completed on August 28, 1979).
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4.
Measurements will be made on a best ef forts basis consintent with the UL constraints.
The goal is to measure everything important to understanding the test.
Discussion Although data on the response of sprinklers exist fo r.s peci fi c fi res and room con fi gurations, it is unlikely that the Rancho Seco makeup pump room has been duplicated in prior testing, Extrapolating from existing test data could not be done without an anticipated error of at least plus or minus one minute.
It was concluded that the response time would be det. rmined by (separate ef fects) testing in the actual test room before installation o f all combustible materials.
Combustible material that could ef fect the s p ri nkl e r response will be included or simulated in the separate effects testing.
The decisions of room configuration, test ci rcui t design and design sis fire could not be made from the i n fo rma ti on available during the meeting.
It is planned that these decisions will be made during the site visit.
The following items should be decided during the plant visit:
a.
Extent of room to be mocked-up, b.
The design basis fi re and location,
c.
Cable circuit design for the test to guarantee performance of redundant division.
As an aid in making these decisions, Sylvester will forward the following list of questions to the Utility prior to the meeting:
....,. a.
What are the cable and cable tray design specifications?
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3 b.
What are the lube oil system design details?
c.
What are the room ventilation design speci fications and what will it be after a fire is detected?
d.
What are the sprink.er and barrier d sign s peci fi cati ons ?
e.
What is the average current (or cable temperature) during opera tion?
The following additional issues have to be answered before construction of the test room can be started; however, they do not necessarily depend on the site vis;t:
a.
What ty p e o f w a.l l structure can be used to simulate the I
boundaries of the makeup pump room?
It was agreed that once the room configuration and design basis fire (DBF) are chosen, f
the minimum conditions for the wall will be established by analysis.
Hunter (Applied Physics Laboratory) will make these calculations.
b.
What are the test acceptance criteria?
It must be decided to what extent the actual makeup pump room circuits will be duplicated.
A failure detection system similar to that used in the Sandia testing will be cons'idered, along with soma means of simultaneously applied circuit rated voltage.
Klamerus (Sandia) will consider this question and make a recommendation to the review group.
The following action items were agreed to during the meeting:
1.
Sylvester will arrange for the site visit on September 17-18, 1979.
,2 Sylvester will arrange for a brigade fire drill for the Rancho Seco makeup,:.mp room.
3.
Sylvester will forward a list of questions to the utility prior to the site visit.
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Hunter will prepare a recommendation to the review group on the minimum wall design af ter the room configuration and DBF are chosen.
5.
Klamerus will prepare a recommendation to the review group on a method of detecting circuit failure during the test.
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>3 Addressees of Letter Dated SEP 5 1979 D. Notley, SD G. Harrison, DSS C. Long, DSS D. McDunald, hRR V. Thomas, IE E. Sylvester, NRR F. Rosa, DSS R. Satterfield, DSS D. Fischer, DSS W. Rut erford, IE J. Sto IE F. Shei.., s ki, DOR D. Sullivan, SD T. Dunning, D0R R. Ferguson, D0R P. Matthews, DSS A.S. Hintze, SD A. Ungaro, DSS C. Heit, NRR W. Haass, DPM W. Vesel.y, RES S. Hanauer, DSS L. Rubenstein, NRR D. Kirkpatrick, IE V. Benaroya DSS g, Brooks,NIPC W. Paulson, NRR H. Ornstein, ED0 H. Wilber, IE S. Ebneter, IE-I W.H. Miller, IE :I L hf PDR (2) File #1-23 4t B. Christian, UL D. Nowlin, AL L. Klamerus, Sandia L. Hunter, APL L. Przybyla, UL F. Krause, Sandia W. A. Von Riesemann, Sandia J. Boccio, BNL 1048 020
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