ML20037B209

Change 23 to License DPR-2 Tech Specs,Authorizing Allowance for Respiratory Protective Equipment Use in Determining Excessive Exposure to Airborne Radioactive Matl & Rescinding 650204 Authorization

ML20037B209
Person / Time
Site:	Dresden
Issue date:	09/08/1971
From:	US ATOMIC ENERGY COMMISSION (AEC)
To:
Shared Package
ML20037B206	List: ML20037B204 ML20037B209
References
NUDOCS 8009080600
Download: ML20037B209 (7)

Text

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ATT4 CEMENT A CHANGE No. 23 TO TECHNICAL SPECIFICATIONS LICENSE NO. DPR-2 t

COMMONWEALTH EDISON COMPANY i

DOCKET No. 50-10 Add the following as Section I:

j I.

USE OF RESPIRATORY EQUIPMENT AND ASSLGNED PROTECTION FACTORS j

Radiation control procedures shall be mai.tained and made available to all station personnel.

These procedures shall show permissible radi-4 ation exposure, and shall be consistent with the requirements of 10 CFR 20.

This. radiation protection program shall be organized to meet the requirements of 10 CFR 20.

1 1.

Pursuant to 10 CFR 20.103(c)(1) and (3), allowance can be made for 2

the use of respiratory protective equipment in conjunction with activities authorized by the operating license for this plant in determining whether individuals in restricted areas are exposed to concentrations in excess of the limits specified in Appendix B, Table I, Column 1 of 10 CFR 20, subject to the following conditions and limitations:

i The limits provided in Section 20.103(a) and (b) are not a.

exceeded.

b.

If the radioactive material is of such form that intake through j

the skin or other additional route is likely, individual expo-sures to radioactive material shall be controlled so that the radioactive content of any critical organ from all routes of l

intake averaged over 7 consecutive days does not exceed that which would result from inhaling such radioactive material for 40 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br /> at the pertinent concentration values provided in 1

Appendix B, Table I, Column 1 of 10 CFR 20.

For radioactive materials designate ' "Sub" in the " Isotope" c.

column of Appendix B, Table I, Column 1 of 10 CFR 20, the concentration value specified is based upon exposure to the material as en external radiation source.

Individual exposures to these materials shall be accounted for as part of the 7

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limitation.. individual dose in 520.101. These naterials z.

shall be subject to applicable process and other engineering

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controls.

2.

In all operations in which adequate limitation of the inhalction-of radioactive asterial by the use of process or other engineering E

controls is impracticable, the licensee may permit an individual in a restricted area to use respiratory protective equipment to limit the inhalation of airborne radioactive material, provided:

a.

The limits specified in paragraph 1 above are not exceeded.

b.

Respiratory protective equipment is selected and used so that the peak concentrations of airborne radicactive caterial in-haled by an individual wearing the equipment does not exceed the pertinent concentration values specified in Appendix B, Table I. Column 1 of 10 CFR.20.

For the purposes of this sub-paragraph, the con:entration of radioactive material that is inhaled when respirators are worn may be determined by dividing the ambient airborne concentration by the protection factor specified in Table IV, appended to this specification for the

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respiratory protective equipment worn.

If the intake of radio-activity is later determined by other measurements to have been different than that initially estimated, the later quantity shall be used in evaluating the exposures.

The licensee advises each respirator user that he may leave c.

the area at any time for relief from respirator use in case of equipment malfunction, physical or psychological discomfort, or any other condition that eight cause reduttion in the pre-tection cfforded the wearer.

d.

The licensee maintains a respiratory protective progran ade-quate to assure that the requirements above are met'and incorporates practices for respiratory protection consistent with those recommended by the American National Standards Institute (ANSI-288.2-1969).

Such a program shall include:

1) Air sampling and other surveys sufficient to identify the hazard, to evaluate individual exposures, and to permit proper selection of respiratory protective equipment.

2) Written procedures to assure proper selection, supervision, and training of pet.2onnel using such protective equipment.

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, 3) Written procedures to assure the adequate fitting of respirators, and the tasting of respiratory protective equipment for operability immediately prior to use.

4) Written procedures for maintenance to assure full effec-tiveness of respiratory protective equipment, including i

issuance, cleaning cnd decontamination, '.nspection, repair, I

and storage.

5) Written operational and administrative procedures for proper use of respiratory protective equipment including provisions for planned limitations on working times as necessitated by operational conditions, i

6)

Bioassays and/or whole body counts of individuals (and other surveys, as apprcpriate) to evaluate individual exposures and to assess protection actually provided.

c.

The licensee uses equipment approved by the U. S. Bureau of Mines under its appropriate Approval Schedules as set forth in Table IV.

Equipment not approved under U. S. Bureau of i

Mines Approval Schedules may be used only if the licensee has

.l evaluated the equipment and can demonstrate by testing, or on

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the basis of reliable test information, that the material and l

performance characteristics of the equipt.ent.are at least equal to those afforded by U. S. Bureau of Mines approved equipment of the same type, as specified in Table IV.

f.

Unless otherwise authorized by the Commission, the licensee l

does not assign protection factors in excess of those speci-fied in Table IV in selecting and using respiratory protective j

equipment.

lj 3.

These specifications with respect to the provisions of 120.103 i

shall be superseded by adoption of proposed changes to 10 CFR 20,

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Section 20.103, which would make this specification unnecessary.

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TABLE IV PROTECTION FACTORS FOR RESPIRATORS PROTECTION FACTORS 2/

GUIDES TO SELECTION OF EQUIPMENT PARTICULATES BUREAU OF 11INES APPROVAL SCIIEDULES*

DESCRIPTION MODES AND VAPORS AND FOR EQUIPMENT CAPABLE OF PROVIDING AT GASES EXCEPT LEAST EQUIVALFNT PROTECTION FACTORS TRITIUM OXIDE 3j

• or schedule superseding for equipment of type listed I.

AIR-PURIFYING RESPIMTORS F.tcepiece, half-mask [ 7_/

NP 5

21B 30 CFR S 14.4(b)(4)

Facepiece, full 7/

NP 100 21B 30 CFR 5 14.4(b)(5); 14F 30 CFR 13 II.

ATMOSPHERE-SUPPLYING RESPIRATOR 1.

Airline respirator Faceplece, halt-mask CF 100 19B 30 CFR 5 12.2(c)(2) Type C(i)

Facepiece, full CF 1,000 19B 30 CFR S 12.2(c)(2) Type C(i)

Facepiece, full 7_/

D 500 19B 30 CFR 5 12.2(c)(2) Type C(ii)

Facepiece, Full PD 1,000 19B 30 CFR 5 12.2(c)(2) Type C(iii)

Hood CF 5/

6/

Suit CF 5/

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t 2.

Self-contained breathing apparatus (SCBA)

Facepiece, full 7_/

D 500 13E,30 CFR 5 11.4(b)(2)(1)

Facepiece, full PD 1,000 13E 30 CFR 5 11.4(b)(2)(ii)

Facepiece, full R

1,000 13E 30 CFR 5 11.'4(b)(1)'

IIL.

CO:!BINATI0ti RESPIRATOR Any combination of air-Protection factor 19B CFR 5 12.2(e) or applicable purifying and atmosphere-for type and mode schedules as listed above supplying respirator of operation as listed above I/, 2/, 3/, 4/, 5_/, 6/, 7/ - [These notes are on the following pages]

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See the following symbols:

CF: continuous flow D: demand NP: negative pressure (i.e., negative phase during 7.nhalation)

PD: pressure demand (i.e., always positive pressure)

R:

recirculating (closed circuit)

-2/

-(a) For purposes of this specification, the protection factor is a measure of the degree of protection afforded by a respirator, de-fined as the ratio of the concentrarion of airborne radioactive material outside the respiratory protective equipment to that in-side the equipment (usually inside the facepiece) under conditions of use.

It is applied to the ambient airborne concentration to estimate the concentration inhaled by the wearer according to the following formula:

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Ambient Airborne Concentration Concentration Inhaled =

Protection Factor (b)

The protection factors apply:

l (1) only for trained individuals wearing properly fitted respirators used and maintained under supervision in a 1

well-planned respiratory protective program.

(ii) for air-purifying respirators only when high efficiency

[above 99.9% removal efficiency by U. S. Bureau cf Mines F

type dioctyl phthalate (DOP) test] particulate filters i

and/or sorbents appropriate to the hazard are used in l

at=ospheres not deficient in oxygen.

(iii) fer atmosphere-supplying respirators only when supplied with adequate respirable air.

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Excluding radioactive contaminants that present an absorption or sub-mersion hazard.

For tritium oxide approximately half of the intake occurs by absorption through the skin so that an overall protection factor of not more than approximately 2 is appropriate when atmosphere-supplying respirators are used to protect against tritium oxide.

Air-purifying respirators are not recommended for use against tritium oxide.

See also footnote 5/, below, concerning supplied-air suits and hoods.

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Under chin' type only. Not recommended for use where it might be

'possible for the ambient airborne concentration to reach instantaneous values greater.than 50 times the pertinent values in Appendix B, Table I,

' Column 1 of 10 CFR, Part 20.

-5/

Appropriate protection factors must be determined taking account of the design of the suit or hood and its permeability to the contaminant under conditions of use.

No protection factor greater than 1,000 shall be used except as authorized by the Commission.

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No approval schedules currently available for this equipment.

Equip-ment must be evaluated by testing or on basis of available test information.

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NOTE 1: Protection factors for respirators, as may be approved by the U. S. Bureau of Mines according to approval schedules for respirators to protect against airborne radionuclides, may be used to the extent that they do not exceed the protection factors listed in this Table.

The protection factors in this Table may not be appropriate to circumstances where chemical or other respiratory hazards exist in addition to radioactive hazards.

The selection and use of respirators for such circumstances should take into account approvals of the U. S. Bureau of Mines in accordance with its applicable schedu?

NOTE 2:

Radior.ctive contaminants for which the concentration values in Appendix B, Table I of this part are based on internal dose due to inhala-tion may, in addition, present external exposure hazards at higher concen-j trations.

Under such circumstances, limitations c occupancy may have to be governed by external dose limits.

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cetc The attached Change l'o. 23' for rcsden 1 Technical t.llowance f or respiratory protectivo

, 3rcen Specifications re.

ent c uir-.e n t under '52c. tion 20.103 (as recom.x-nd=.d bv Tech) i'e-,

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spec.. te.... o. 1 ca 8/9/.1) Ic cn t ape in c;r.=5.d..

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-letter.:o..r.ti.on and Attachment A thereto are on Tan..e 17.L.

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.Attachnent A of the change ceuld be uscd if yeul re ;- 5 : v. t.

i n.mes have sinilar recuests'fron your licenseec.

Encn usingi g

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the tape f or Attachment A, note that the basic nunber i

.C'it cod, 172, L:.#o^Ts ing and references to the table (IG in 2.'t, e&f

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a and on the table of " Protection Facters... nheuld be J. lishn, CREg 3

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