ML20090M047

Application to Change Request 1 for Amend to License DPR-22, Changing Tech Spec App a of Provisional Operating License as Listed Info

ML20090M047
Person / Time
Site:	Monticello
Issue date:	03/15/1971
From:	Dienhart A NORTHERN STATES POWER CO.
To:
Shared Package
ML20090M035	List: ML20090M034 ML20090M047
References
NUDOCS 9102140460
Download: ML20090M047 (11)

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NORTiIIRN STATE 3 IOVER COMIA'Tl Montitello Nuclear Generating Plant Docket No. 50 263 I RDQlTEST FOR AUDIORIZATION FOR CHANGP. IN TECHNICAL SITCIFICATIONS ATIENDIX A 0F IROVISIONAL OPERATING LICENSE NO. DIE.22

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(Tech. Spec. Change Request No. 1)

Northern States Power Company, a Minnesota corporation, requests author.

1:ation for the addition of section 6.2.B.2 to Appendix A of Iroviolonal Operating License DIR.22, 7behnical Specifications, as follows: .

6.2.B.2 Respiratory Irotection Equipment Requiremento

6. Allowances for the use of reopiratory protection equipment in exposure of tersonnel in restricted ureus to airborne concentrations of radioactive material muy be applied on the basis of the fol.

lowing assumed protection factors and stated I

conditions.

, 1) MSA "Dustfoe" mask with type H " ultrafilter"

., (or equivalent). A protection factor of 10 for airborne particulates and 1 for gases appliec l upon assurance of good face fit and proper use.

2) MSA full face mask with type H " ultrafilter" (or equivalent). A protection factor of 100 for airberne particulates and 1 for gases applies upon assurance of good face fit and proper use.

3) MSA full face mask with type G4R combination chemical and Torticulate canister (or equivalent).

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This apparatus will be used in place of items 1) or 2) if concentrations of radioiodine exceed MFC values. A protection factor of 100 applies for airborne particulate and halogen radioactive materials upon ecsurance of good face fit and

, proper use.

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s D O h) MSA cupplied air respirator with full face mack, air line and variable flow demand regulator (or equivalent). A protection factor of 100 applies upon assurance of good face fit and proper us s.

5) MSA self-contained air breathing apparatus (or equivaient). Protection factors of 100 for operatior, in the demand regulated mode at.1 1000 for operation in the constant flow mode apply upon assurance of good face fit and proper use.

6) MSA Chemox oxygen breathing apparatus (or equivalent). A protection factor of 1000 applies upon assurance of good face fit and proper use.

7) MSA supplied air respirator with full face mask and positive pressure - constant flow reEulator(orequivalent). A protection factor of 1000 applies upon assurance of good face fit and proper use,

b. The protection factor is the reciprocal of the assumed penetration for the complete respirator. It is applied to the airborne concentration to detennine the concen-tration which is assumed to be inhaled by the wearer, according to the following formula:

Airborne concentration Protection factor = assumed concentration inhaled

c. Personnel exposure to airborne concentrations of radio-active materials in excess of the limi+r specified in Appendix B, Table 1,10 CFR, part 20 shall be pennitted only in compliance with Monticello Nuclear Generating Ptant administrative procw'ures and Radiation Safety author $-

zations and shall be performed under the supervision of the Radiation Protection Engineer.

d. The requi-ments of 6.2.B.2 a, b, and c shall not preclude i the use of respiratory protective equit eent for pre-cautionary or emergency purposes.

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The justification for this request and the cupporting information pursuant to 10 CFR, tort 20.103 (c) (3) are detailed in Lhe attachment to this request.

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NORTHL*Ui STATES IOWER COMPANY Dated Pm'ch 15, 1971 ysy Arthur V. Dientert 7[ .

Vice Iresident - Engineering

a FiloCf.

. O $1storyO) g[ ~,//'o Docket i 4 3 c5 h. #

g". 3-15 1l DFR - 22 'h I D/.

. Cnnnte Request No. E*);  ! ,, ,

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ATTACID4ENT TO 10tqUEST FOR CHANGE IN TECHNICAL SIECIFICATIONS W ,

JUSTIFICATION FOR 01ANGE AND SUHL1MEJiTARY INF010MTION "~#

In the }crformance of work at the Monticello Jiuclear Generating Plant it will be neccesary that come work be Ierformed in the localized or confined areas of airborne concentrationa in excess of the limits siccified in Appendix I(,

'Ib ble 1, 10 CFB, Iurt 20.

It is anticiputed that certain portions of thirj work particularly that connected with fuel handling and equipnent maintenance i and remir may involve airborne concentrations sufficiently in excess of the J

specified limite as to make tho exclusive uce of the time weighted exposure limits unfeacible and excessively restricted to the proper lerformance of tasks which will be required.

By t he prudent utilizatit , of applicable allowances for respiratory equip.

ment employed for these s.tuutions, the required work can be accomplished with greater cafety and precision than would otherwice be possible.

The allowancer, herein requested are conoictent with accepted and reasonable aufety requirements and do not compromice the curety of Tersonnel or the general public. Such allowances are Termitted under provisions of 10 CFR 00, Section 20.103 (c/ ( 3) to the extent authorized by the Director of Divicion of Licencing.

As support for this request and in compliance with Sectien 20.103 (c) (3),

10 CFR, Iurt 00, olleving are listed descriptions, conditions, and limitations c

which we propose to apply to exposures granted under this authorization:

A. EquiIcent descriptions, efficiencies. and application of efficiency values to determine use of equileent Following are licted the descriptions and protection factors (based on the assumed efficienciec) of respiratory equipment which will be used as necescary for the protection of perconnel againct airborne radioactive materials and for which allowances are requested:

1) MSA "Dustfoe" mask with type H " ultrafilter" (or equivalent).

A protection factor of 10 for airborne particulates and 1 for gaces applies upon acsurance of good face fit and proper uce.

2) MSA full face mask with type H " ultrafilter" (or equivalent).

A protection factor of 100 for airborne particulates and 1 for gaces applien upon assurance of good face fit and proper use.

3) MSA full face mask with type G4R combination chemical and particulate canister (or equivalent). 'Ihis apparatus vill be uced in place of items 1) and 2) if concentrations of radio-iodine exceed MFC values. A protection factor of 100 applies for airborne particulate and halogen radioactive materials upon assurance of good face fit and proper use. 1337 i

O O h) MSA supplied air respirator with full face mask, air line and variable flow demand regulator (or equivulent). A pro-tection factor of 100 appliec upon assurance of good face fit and proper uce.

5) MSA scif-contained air breathing apparatus (or equivalent).

Protection factors of 100 for operation in the demand regulated ecdc and 1000 for operation in the constaat flow mode apply upon assurance of Eood face fit and proper use.

6) MSA Chemox oxygen breathing apparatus (or equivalent). A protection factor of 1000 applies upon assurance of good face fit and proper use.

7) MSA cupplied air respirator with full face mack and positivo pressure - constant flow regulator (or equivulent). A

> protection factor d 1000 applies upon assurance of good face fit and proper use.

d) Entry into arcac in which airborne concentrations ar?, or f are believed to be, in excess of MPC valuco shall require the wearing of at least the Dustfoe repirator or equivalent.

l Concentrations in excess of 10 timeo MPC values shull require the wearing of at least the full face mask with type H Ultra-filter or supplied air or colf-contained apparatuo (or equivalent) with demand regulator. Concentrations in excean of 100 timen MPC values shall require the wearer of the MSA supplici air resp'.rator (or equivalent) with constant flow air line and regulator, self-contained air breathing apparatuo operated in the constant flow mode, or Chemox self-contained breathing apparatus. Entry into areas in which airborne concentrations of radiciodine exceed MPC values shall require the wearer of the full face mask type respiratory protective equipment as outlined above.

E. Fitting, Maintensnee and Cleaning of Respiratory Protective E3 uiteent

1) Personnel chall be trained by radiation cafety personnel in the proper fitting and use of each type of respiratory protective equipeent prior to their being authorized entry into the area requiring ito use. This training vill consist of demonstrations ani practice in donning and fitting the face pieces, connecting, leak testing, and operating of the equipment as well as explanation of the purpose, character-istice, and cautions applicable to the use o r each type of respiratory equipment. Retraining shall be performed annually or more frequently as specified by Radiation Safety personnel on the basis of plant operation and individual performance.

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2) Initial testing and, as necescary, periolic retecting vill be perfoi ned under the supervision of the Radiation Protection engineer to determine individual proficiency, fitting problema, and resultina restrictions, if any, of individuals in the use of each type of respiratory equipment. Thece fitting tecto of full face maak equipnent chall include the uce of amyl acetate or other cuitable material which will be passed about the mask-face seal. Radiation Safety personnel vill be trained to perform this test safely.

3) Before entering an area requiring the use of respiratory equipnent, each wearer vill inapect the unit for condition, fit, strap adjustment, and proper operation of inhalation and exhalation valves no appropriate. Leak tightness vill be checked by attempting intalation and extulation with appropriate portions of the apparatus valved out or blocked, as required for the type of equipnent being checked, in accordance vith manufacturerc' recoamended procedures. In the cace of the Chemox breething apparatus, additional checho vill be performed to insure the integrity of the bellova, proper function of the respiratory valvec, that adequate oxygen generation has been started, and that the breathing apparatus 10 operating properly at a olightly positive preocure. Air supply tanka vill be inzpected to insure an adequate supply of air. Low preocure alarms ani elapsed time alarms (ao applicable) will be checked for operation.

4) Following use, each respiratory device vill be surveyed for radicactive contamination, decontaminated as necessary, cleaned, and canitized with a bacteriostatic colution in accordance with detailed procedures. Following cleaning and sanitizing, each device vill be inspected, tested, and restored ac necessary to proper working condition in accordance with the proceduren established by Radiation Safety personnel.

Dach respiratory device vill then be returned to use or to it's normal storage location as required. Masks shall be stored enclosed in clean plastic bags. All celf-contained breathing apparatus (Chemox and tank type units) shall be otored at designated locations in their proper carrying cases.

5) surveying of breathing apparatus face pieces chall include both meter curveys and smear curveys of all accessible our-faceo. Dacontamination chall be accomplished by washing in varm water and detergent or mild decontamination solution as required, and thoroughly rinced and dried. Strong agents which msy produce skin irritation, metal corrosion or attack of rubber parto vill not be used.

6) Inspection of respiratory equipnent shall be perforr.ed monthly for all self-contained air or oxygen breatning apparatus and no leos frequent than semi annually for all other types. Inspections and repairs shall be performed by or under the supe-vision of Radiation Protection Engineer.

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7) In the insitetion of respiratory equipnent Inrticular attention vill be given to metal-to-rubber coaln, con 31 tion of rubber parts, exhaust and inhalation vnives, regulators, hoses, valves and fittings, thresoed conne :tions, eye. piece and visor connections,rnd ceals. Inmaged or badly vorn com-ponents will be replaced prior to the unit being made available for service.

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0. Procedures Governing Use

1) At Monticello Nuclear Generating plant, no individual vill knowingly cause himself or others to be exposed to concentra-tione of airborne radioactive material such that resulting inhalation, ingestion, or absorption of radioactive material.

When averaged over a period of seven consecutive days will exceed the limits cpecified in Appendix B, hble 1,10 CFR, Ihrt 20.

2) Each accessible area in which airborne radioactive materials exist in concentrationa in excess of the limits specified in Appendix B,1bble 1,10 CFR, Ihrt 20 shall be posted in accordance vitt. nection 20.203 (d),10 CFR, Ibrt 26

3) Needs for respiratory protection shall be minimized by the appropriate uce of controlled-flow ventilation, containment, isolation, and dilution. Equipment design shall include appropriate provisions for minimizing the possible release of radioactive mterial to the respiratory environment of perconnel, personnel entries into areas requiring respirst',iry protection vill be minimized as to frequency, duration and airborne concentrations by every reasonable means.

b) As a part of the normal administrative procedures employed at the Monticello Nuclear Generating plant, all vork which may involve significant quantities of radioactive materials, radiation levels, or other special sai'ety considerations requires authorization by the Radiation Protection Engineer and the compliance with requirements erecified in the Radiation Work Permit issued for the work. Entry into an area in which concentrations of airborne radioactive materials are known or suspected to be in excess of limits specified in Appendix B, hble 1,10 CFR part 20 shs11 require authorization by the Radiation Protection Engineer and compliance with the proce-dures and requirements so specified and shall be performed under the direct supervision of Radiation Safety personnel.

'Ihe cpecifications for use of respiratory equipr. at chall include the type of equipnent required and applicable exposure time limitations. The specified respiratory equipment must be suitable for the types and concentrations of airborne radio-active materials which will be encountered.

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5) Appropriate air campling vill be performed and haturde vill be suitably accesne' tith reslect to the proper eclection of breathing apiviratu' .ad evaluntion of exponures.

6) liorthern States power Cccinny vill carry out an appropriate program to determire the effectiveness of the respiratoly protection afforded during specific applications.

7) Average concentrations of airborne radioactive materials in normally occupied areno vill be maintained t.t less than the limits specified in Appendix B, TcMe 1,10 Cril, Iurt 20 Areas in which concentrations exceed these values vill not be nonnally occupied and entry to such areas vill be l controlled by procedural limitations.

8) liormally, respiratory equ1Trnent shall not be required to be worn for periods of time in excess of two hours. If work requiremento in an airborne radio' activity area requires a longer occupation time, either relief by :;ther gernonnel or rest perio38 vill be provided to assure that no hardship re-sults frcn maching requiremento that vill discourage observance by the individual of the vear requirements. In any case, relief of personal discomfort, including egress from the area by appropriate procedures vill be permitted as required.

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TAELE OF FROTBCTICII FACTORS FOR RE3PIRA~0RS .

(21 Protection Factor

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DESCRIPTION MODHi HIT.

f3 IUXICITI ) OTHER TRITIU4 OXIDE (g) OT:IER I. AIR-FURIFYING RESPIRATOR Facepiece, half c:ask NP (5) -

Ia 10 NR 10 Facepiece, full HP 100 100 NR 100 .

II. ATG/.0 SPHERE-SUFFLYII;G RE3PIFATOR

1. Air-Line Respirator Facepiece, half-mask CF 100 100 2 100 Facepiece, full CF 1000 1000 2 1000 Facepiece, full D-NP Ia 100 2 100 Facepiece, half-mask D-FP 100 100 2 100 Facepiece, full D-PP 1000 1000 2 1000 Hood CF 1000 1000 P, 1000 Suit CF 1000 100G 19060 1000

2. Self-Contained Breathing App 1ratus (SEA)

Facepiece, full D-NP 100 100 2 100 Facepiece, full D-PP 1000 1000 2 1000 Combim tion Respirator 3

h Any combimtien of air-purifying Protection factor for type and c: ode of and atmosphere supliying operation as listed above.

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