ML20215G131

Advises That Bend Radius of Greater Than/Equal to Five Times Radius of Sampling Line Should Be Accepted in Examining Installation of Stack & Vent Sampling Sys

ML20215G131
Person / Time
Issue date:	03/08/1977
From:	Higginbotham L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
To:	Fisher W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 8610200065
Download: ML20215G131 (1)

Text

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. NUCLEAR REGULATORY COMMi;slON '

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UNITED STATES g

y CASHINGTON,C.C 20355

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March 8, 1977 a

MEMORANDUM FOR:

W. L. Fisher, Region III FROM:

Leo Higginbotham, IE:Hq

SUBJECT:

PARTICULATESAMPLINGLINEBENDRADII(AITSF30257H2)

In examining the ins'tallation of stack and vent sampling systems, we should accept a bend radius of ? 5 times the radius of the sampling line.

However,'some sort of an evaluation must be performed by the licensee to actually demonstrate that representative samples are being collected.

As you know, this can sometimes be done by collecting special samples at the location of the sample probe and correlating the results with those obtained at the " remote" sample collector.

Please let me know if you need aby ng further.

I I

(,

N Leo

. Aicj s tham, Chief Safety anc Environmental Programs Branch Office of Inspection and Enforcement cc:

J. M. Allan, RIII CONTACT:

L. B. Higginbotham 49-27347 v

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I 770308 8610200065 PDR ILE PDR tilSC

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