ML20037A156
| ML20037A156 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 09/19/1978 |
| From: | Lefave B Office of Nuclear Reactor Regulation |
| To: | Daniels H Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML111090060 | List:
|
| References | |
| FOIA-80-515, FOIA-80-555 NUDOCS 7809250098 | |
| Download: ML20037A156 (2) | |
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NUCLEAR REGULATORY COMMISSION gg e,.
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SEP 191978
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l MEMORANDUM FOR: Howard Daniels, Instrumentation and Control 1
Systems Branch, DSS i
FROM:
Bill LeFave, Auxiliary Systems Branch, DSS
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SUBJECT:
IDENTIFICATION OF SAFETY RELATED SYSTEMS AND COMPONENTS In response to your memo of September 8,1978, I have reviewed the Midlard Design for identification of (1) safety related systems iden-tified in Section 7.1, (2) safety related mechanical and electrical equipment in Table 3.11, (3) instrumentation to follow the course of an accident (Table 7.5-1).
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(1) Section 7.1 har identified all the safety related systems within the scope of ASB.
(2) Table 3.11 has not identified the following valves:
a.
Service Water System - Motor Operated Isolation Valves 2M0-1852, 2M0-1856
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Service Water for Reactor and Auxiliary Building Motor Operated Valves 2m0-1947.
c.
Condensate and Feedwater System IMO-3831; 2M0-3931 (steam to AFW turbine)
ISCV-3831; 2SCV-3931 (steam to AFW turbine)
ISV,IXV-3866A), B ; 2SV-3966A),B) (inside containment) j d.
Auxiliary Building HVAC (Figs. 9.4-3 through 9.4-7)
All safety related valves and dampers with designation nos. 54xx The following equipment should also be identified in Table 3.11-1.
1 a.
Instrumentation for automatic switchover of Auxiliary Feedwater Pump suction from the condensate storage tank to the service water systems.
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l i SEP 191978
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I Level transmitters in Ultimate Heat Sink pump pit used -
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for protection of service water pumps.
Level transmitters for CCW surge tank which are used to
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isolate non-seismic portion of component cooling water c.
j water system.
Table.7.5-1 should also include the condensate storage tank level for instrumentation to follow the course or an accident.
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(3) b Bill LeFave Auxiliary Systems Branch, OSS cc:
D. Hood P. Matthews V. Benaroya G. Mazetis l'
C. Miller
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J. Shapaker L. Soffer F. Rosa M. Srinivasar D. Fieno R. Tedesco 0
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