ML20008D755

App 1A to Midland 1 & 2 PSAR, Glossary of Terms. Includes Revisions 1-36

ML20008D755
Person / Time
Site:	Midland
Issue date:	01/13/1969
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
References
NUDOCS 8007300626
Download: ML20008D755 (3)

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APPEIDIX 1A GLCSSARY OF TERMS AIR PE"IECULATIC?! A'!D COOLING SYSTEM ( ADACS )

Equipment located heat excbangers within eccled bythe reacter service building water. ccnzisting of fcur air fin tube The function of this system is to centr:1 to theareactor provide building ambient temperature during normal cperation and redundant l event of a loss-of-coolant and maximum hypotnetical accident. system to the

_LCSS-OF-CCOLANT ACCIDCi? (LOCAI Any uncontrolled loss of reactor coola:

the postulated coolant double ended simultaneous rupture of the largest reactor, rangi system piping.

MAXDiCI HYPOTHETICAL ACCIDE:!T (MHA)

A hypothetical maximum break size LCCA in which fission products are e assum d to be the cause released release. from the reactor without identification of am mechanis to i

ting hazard to the general public for the proposed site.This accident is ce ff NUCLEAR STEAM SYSTEM (NSS) -

Equipment comprised of the reactor, steam generatorc, pressurizer , reactor coolant iaries. pumps and piping, instrumentation and control, and principal auxil-ENGINEEPED SAFEGUARDS (ES)

Those systems which perform the safety functions of post-accident reactor truilding removal. ecoling, isolation, core cooling, and reactor building icdine The systems which constitute the engineered safeguards are:

High-Pressure Core Injection (Make-Up and Purification)

Core Flooding (CF)

Low-Pressure Core Injection (DH)

Reactor Building Spray Reactor Building Air Recirculation and Cooling snd theoperation.

system associated instrumentation and control systems for initiation of the V

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.- 1 ENGINEERED SAFEGUARDS ACTUATION SYSTEM l

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The guards action.

sensors, logic, and actuating elements which initiate engineered safe-

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cMEE0E' ICY CORE COOLING SYSTDI (ECCS) '

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This syste= is cc= prised of three high-pressure injection pu=rs , two core '

.lceding tanks, two 1cw-pressure injection pumps and assceiated tipinz  !

valving, and controls to provide post-accident cere eccling functicn usine '

water frc= an external source er by recirculation of water frc= the ra- ~

actor building. ~

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