Information Notice 1994-35, Niosh Respirator User Notices, Inadvertent Separation of the Mask-Mounted Regulator(Mmr) from the Facepiece on the Mine Safety Appliances

Niosh Respirator User Notices, Inadvertent Separation of the Mask-Mounted Regulator(Mmr) from the Facepiece on the Mine Safety Appliances

ML031060543
Person / Time
Site:	Beaver Valley, Millstone, Hatch, Monticello, Calvert Cliffs, Dresden, Davis Besse, Peach Bottom, Browns Ferry, Salem, Oconee, Mcguire, Nine Mile Point, Palisades, Palo Verde, Perry, Indian Point, Fermi, Kewaunee, Catawba, Harris, Wolf Creek, Saint Lucie, Point Beach, Oyster Creek, Watts Bar, Hope Creek, Grand Gulf, Cooper, Sequoyah, Byron, Pilgrim, Arkansas Nuclear, Three Mile Island, Braidwood, Susquehanna, Summer, Prairie Island, Columbia, Seabrook, Brunswick, Surry, Limerick, North Anna, Turkey Point, River Bend, Vermont Yankee, Crystal River, Haddam Neck, Ginna, Diablo Canyon, Callaway, Vogtle, Waterford, Duane Arnold, Farley, Robinson, Clinton, South Texas, San Onofre, Cook, Comanche Peak, Yankee Rowe, Maine Yankee, Quad Cities, Humboldt Bay, La Crosse, Big Rock Point, Rancho Seco, Zion, Midland, Bellefonte, Fort Calhoun, FitzPatrick, McGuire, LaSalle, Fort Saint Vrain, Shoreham, Satsop, Trojan, Atlantic Nuclear Power Plant
Issue date:	05/16/1994
From:	Burnett R, Grimes B NRC/NMSS/FCSS, Office of Nuclear Reactor Regulation
To:
References
-nr IN-94-035, NUDOCS 9405110141
Download: ML031060543 (13)

UNITED STATES

NUCLEAR REGULATORY COMMISSION

OFFICE OF NUCLEAR REACTOR REGULATION &

OFFICE OF NUCLEAR MATERIAL SAFETY AND SAFEGUARDS

WASHINGTON, D.C. 20555 May 16, 1994 NRC INFORMATION NOTICE 94-35: NIOSH RESPIRATOR USER NOTICES, 'INADVERTENT

SEPARATION OF THE MASK-MOUNTED REGULATOR (MMR)

FROM THE FA Ee1JCE ON THE MINE SAFETY

APPLIANCES MSA COMPA"R SELF-CONTAINED

BREATHING APPARATUS t AND STATUS UPDATE"

Addressees

All holders of operating licenses or construction permits for nuclear power

reactors, and all licensed fuel facilities.

Purgose

The U.S. Nuclear Regulatory Commission (NRC) is issuing this information

notice to alert addressees to two recent respirator user notices issued by the

National Institute for Occupational Safety and Health (NIOSH) of the

Department of Health and Human Services concerning the unexpected separation

of mask-mounted regulators from self-contained breathing apparatus (SCBA)

facepieces during firefighting activities. It is expected that recipients

will review the information for applicability to their facilities and consider

actions, as appropriate, to avoid similar problems. However, suggestions

contained in this information notice are not NRC requirements; therefore, no

specific action or written response is required.

Description of Circumstances

On February 23, 1994, NIOSH issued a respirator user notice (Attachment 1)

describing factors that can contribute to the separation of mask-mounted

regulators from SCBA facepieces. The unexpected separation of a mask-mounted

regulator could result in an individual being unprotected in an environment

that might pose an immediate threat to the life and health of that individual.

These regulators are used on mask-mounted regulator SCBA with the following

NIOSH certification numbers: TC-13F-256, TC-13F-257, TC-13F-258, and

TC-13F-302. The affected regulators have a quick-connect mechanism and are

designated as Mine Safety Appliances Company part number 492488.

In addition, the respirator user notice applies to certain Mine Safety

Appliances Company combination air-line and SCBA devices with the following

certification numbers: TC-13F-266 and TC-13F-267. The affected regulators

have a quick-connect mechanism and are designated as Mine Safety Appliances

Company model number 7-1047-1.

9405110141 P RL c35- AMLo0I(

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IN 94-35 May 16, 1994 Mask-mounted regulator and combination air-line and SCBA devices with

regulators that attach to the facepiece with a threaded connector are not

affected by the respirator user notice.

On March 31, 1994, NIOSH issued a respirator user notice status update

(Attachment 2), describing the development of a Neckstrap/Regulator-Retainer

Kit by Mine Safety Appliances Company and accepted by NIOSH. This

neckstrap/regulator-retainer, when properly installed, provides a lock for the

regulator-to-facepiece connection. The user notice update states that this

retainer must be installed on all Mine Safety Appliances Company mask-mounted

regulator respirators used at temperatures below 32 degrees Fahrenheit (F) in

order to maintain the NIOSH approval. Although NIOSH believes that proper

maintenance will prevent these failures in warm-weather service, NIOSH

suggests continual use of the retainer to prevent further occurrences of

inadvertent regulator/facepiece separation.

Licensees may wish to share this information with other potential users, such

as local fire departments.

This information notice requires no specific action or written response. If

you have any questions about the information in this notice, please contact

the technical contacts listed below or the appropriate Office of Nuclear

Reactor Regulation project manager.

Robert F. Burnett, Director Brian K. Grimes, Director

Division of Fuel Cycle Safety Division of Operating Reactor Support

and Safeguards Office of Nuclear Reactor Regulation

Office of Nuclear Material Safety

and Safeguards

Technical contacts: D. R. Carter, NRR

(301) 504-1848 J. Roth, NMSS

(301) 504-3427 Attachments:

1. NIOSH Respirator User Notice - February 23, 1994

2. NIOSH Respirator User Notice (Status Update) - March 31, 1994

3. List of Recently Issued NMSS Information Notices

4. List of Recently Issued NRC Information Notices

Attachmnent 1

, <Page 1 of 2 DEPARTMENT OF HEALTH & HUMAN SERVICES Public Health Service

Centers for Disease Control

National Institute for Occupational

Safety and Health - ALOSH

944 Chestnut Ridge Road

Morgantown, WV 26505-2888 February 23, 1994 NIOSH Respirator User Notice

Inadvertent Separation of the Mask-Mounted Regulator (MIM)

from the Faceplece on the Mine Safety Appliances (MSA) Company MMR

Self-Contained Breathing Apparatus (SCBA)

The National Institute for Occupational Safety and Health (NIOSH) and MSA have received

reports of unexpected separation of MMRs from SCBA facepieces during firefighting activities.

These regulators are used on MMR SCBA with the following certification numbers: TC-13F-256

(30-minute low pressure SCBA), TC-13F-257 (30-minute high pressure SCBA), TC-13F-258

(60-minute high pressure SCBA), and TC-13F-302 (45-minute high pressure SCBA). The affected

regulators have a quick-connect mechanism and are designated as MSA part number 492488.

In addition this User Notice applies to certain MSA combination air-line devices with the following

certification numbers: TC-13F-266 and TC-13F-267 (combination air-line and SCBA). The affected

regulators have a quick-connect mechanism and are designated as MSA model number 7-1047-1.

It should be noted that MMR and combination air-line and SCBA devices with regulators that attach

to the facepiece with the threaded connector are not affected by this Notice.

If the MMR separates from the facepiece, the wearer is left unprotected. Such a separation could be

life threatening since these SCBA may be used in immediately dangerous to life and health

environments.

The manufacturer has identified three contributing factors that can lead to regulator separation:

1. Lack of lubrication of the facepiece adapter 0-ring. Not lubricating this O-ring will greatly

increase the force required to insert the second-stage regulator into the facepiece. This can

result in a user believing the regulator is locked into the facepiece when it is actually only

held in by the friction of the 0-ring. If the regulator is not properly locked into the

facepiece, subsequent disengagement can occur. The manufacturer has published the proper

lubrication procedure for the facepiece adapter 0-ring which must be followed to ensure

proper operation. The manufacturer has reported that many users are not lubricating this

O-ring.

2. Dirt and debris in the quick-connect mechanism. Dirt and debris in the quick-connect

mechanism can prevent it from properly locking into the facepiece. The manufacturer has

published a procedure for the proper cleaning of the quick-connect mechanism, as described

in MSA's Product Information News, Number 2, June 1992.

3. Ice formation in the quick-connect mechanism during cold weather operation. If water enters

the quick-connect mechanism and freezes during cold weather operation the regulator may not

properly lock into the facepiece. Care must be taken before the regulator is inserted into the

Attacb 1ent

1 Pagea

facepiece to ensure that any Ice formation Inside the quick-cornect mechanism will not

interfere with its ability to return to the locked position. This can be done by operating the

quick-connect mechanism and visually checking to make sure the mechanism is working

properly prior to insertion of the regulator into the facepiece.

In the Interim, MSA recommends the following: (1) Follow the manufacturer's instructions regarding

the proper lubrication and cleaning of the quick-connect mechanism. (2) Make sure the quick-connect

mechanism is operating properly prior to inserting it into the facepiece. (3) Follow the procedure

detailed in the MSA Level I instruction manual including checking the regulator-to-facepiece

connection by grasping and pulling on the regulator. Perform this check often during use to ensure

the regulator is properly secured. Contact your local MSA office at 1-00-672-2222 if you have

questions or need to obtain Instruction manuals or maintenance Instructions for the proper use and

care of the MMR SCBA.

In addition to these three known causes for regulator disengagement, there have been several field

reports that Ice buildup on the second-stage regulator and facepiece assembly may cause inadvertent

disengagement. In subfreezing temperatures ice may form on the junction between the facepiece and

the quick-connect handwheel. When this junction is not free to rotate, force on the air-line

connecting the air bottle to the regulator may activate the quick-disconnect and cause inadvertent

separation to occur. The investigation into the role that ice buildup plays in inadvertent regulator

disengagement is continuing by both MSA and NIOSH. Further information will be released as it

becomes available.

At this time, NIOSH does not recommend removing the MMR SCBA from warm-weather service;

the cleaning and lubrication procedures recommended by the manufacturer seem sufficient to eliminate

the possibility of inadvertent warm-weather MMR separation. However, in subfreezing temperatures

in the presence of water spray, NIOSH recommends against the use of MMR SCBA. This

recommendation stands until data and information are sufficient to convince NIOSH that inadvertent

MMR separation is not possible for a properly used and maintained SCBA. Because of the life- threatening implications of any SCBA failure, NIOSH considers the possibility of any failure to be

unacceptable.

Users of MSA MMR SCBA who have experienced inadvertent regulatorlfacepiece separations, or

other failure modes, are encouraged to report these incidents to both NIOSH and MSA. Information

should be forwarded in writing to NIOSH in care of Mr. Tim Merinar, NIOSH, Certification and

Quality Assurance Branch, 944 Chestnut Ridge Road, Morgantown, West Virginia 26505 and MSA in

care of Mr. Charles Seibel, Manager of Product Safety, MSA, P.O. Box 426, Pittsburgh, Pennsylvania 15230 or by telephone at 1-800-672-5555 (FAX 412-967-3309). Separations or any

other failures involving any SCBA should also be reported to NIOSH.

Sincerely yours, Richard W. Metzler, Chief

Certification and Quality

Assurance Branch

Division of Safety Research

V Attacbment 2 2 DEPARTMENT OF HEALTH & HUMAN SERVICES Public Hesitirvg 2 Centers for Disease Control

National Institute for Occupational

Safety and Health - ALOSH

944 Chestnut Ridge Road

Morgantown, WV 26505-2888 NIOSH Respirator User Notice

March 31, 1994 Status Update on the Inadvertent Separation of the

Mask-Mounted Regulator (MMR)

from the Facepiece on the Mine Safety Appliances (MSA) Company

MMR Self-Contained Breathing Apparatus (SCBA)

On February 23, 1994, the National Institute for Occupational

Safety and Health (NIOSH) issued a Respirator User Notice

regarding the inadvertent separation of the MMR from the

facepiece on the MSA KMR SCBA and combination airline/SCBA that

have regulators with quick-disconnect mechanisms. These

regulators are used on MMR SCBA with the following certification

numbers: TC-13F-256 (30-minute low-pressure SCBA), TC-13F-257

(30-minute high-pressure SCBA), TC-13F-258 (60-minute high- pressure SCBA), and TC-13F-302 (45-minute high-pressure SCBA).

The affected regulators have a quick-connect mechanism and are

designated as MSA part number 492488.

These regulators are also used on certain MSA combination airline

devices with the following certification numbers: TC-13F-266 and

TC-13F-267 (combination airline/SCBA). The affected regulators

have a quick-connect mechanism and are designated as MSA model

number 7-1047-1.

A Neckstrap/Regulator-Retainer Kit has been developed by MSA

and has received NIOSH acceptance. This neckstrap/regulator- retainer, when properly installed, provides a lock for the

regulator-to-facepiece connection. This retainer mqust be

installed on all USA MMR respirators usea at temperatures

below 32 degrees Fahrenheit (F) in order to maintain the NIOSH

approval. Although not required at temperatures above

32 degrees F, continual use of the retainer will prevent

further occurrences of inadvertent regulator/facepiece

separation, should the quick-disconnect mechanism fail to lock

properly when inserted into the facepiece.

Use of the neckstrap/regulator retainer is not a substitute

for following the manufacturer's recommendations for

maintenance and use. Failure to properly lubricate the

facepiece adapter O-ring can result in increasing the force

necessary to insert the MMR. Failure to properly clean and

maintain the quick-disconnect mechanism can result in the

build-up of dirt and debris in the locking mechanism. Both of

these conditions can result in the regulator failing to

Attachment 2

-- Page 2 properly lock onto the facepiece, thus making inadvertent

regulator/facepiece separation likely, even at temperatures

above 32 degrees F. The Institute has requested that NSA

distribute the neckstrap/regulator retainer to all end users

of MMR SCBA, as well as provide it on all new purchases.

In the February 23 Respirator User Notice, NIOSH recommended

that MMR SCBA not be used at temperatures below 32 degrees F

in the presence of water spray. This recommendation is no

longer in effect for those respirators that have the

neckstrap/regulator retainer properly installed. All field- deployed MMR SCBA used at temperatures below 32 degrees F must

have the neckstrap/regulator retainer properly installed.

Contact MSA for the specific details regarding the availability

of the Neckstrap/Regulator Retainer Kit. Their address is:

Mine Safety Appliances Company

P.O. Box 439 Pittsburgh, Pennsylvania 15230

Telephone: (800) 672-5555 Separations or any other failures involving any SCBA should be

reported to NIOSH by contacting Mr. Tim Herinar, NIOSH, Division

of Safety Research, Certification and Quality Assurance Branch,

944 Chestnut Ridge Road, Morgantown, West Virginia 26505-2888, either in writing or by calling (304) 284-5713.

Sincerely yours, Richard W. Metzler, Chief

Certification and Quality

Assurance Branch

Division of Safety Research

Ali

Ai atchment 3 IN 94-35 May 16, 1994 LIST OF RECENTLY ISSUED

NMSS INFORMATION NOTICES

Information Date of

Notice No. Subject Issuance Issued to

94-23 Guidance to Hazardous, 03/25/94 All NRC licensees.

Radioactive and Mixed

Waste Generators on the

Elements of A Waste

Minimization Program

94-21 Regulatory Requirements 03/18/94 All fuel cycle and materials

when No Operations are licensees.

being Performed

94-17 Strontium-90 Eye Appli- 03/11/94 All U.S. Nuclear Regulatory

cators: Submission of Commission Medical Use

Quality Management Plan Licensees.

(QMP), Calibration, and

Use

94-16 Recent Incidents Resulting 03/03/94 All U.S. Nuclear Regulatory

in Offsite Contamination Commission material and fuel

cycle licensees.

94-15 Radiation Exposures during 03/02/94 All U.S. Nuclear Regulatory

an Event Involving a Fixed Commission licensees author- Nuclear Gauge ized to possess, use, manu- facture, or distribute

industrial nuclear gauges.

94-09 Release of Patients with 02/03/94 All U.S. Nuclear Regulatory

Residual Radioactivity Commission medical

from Medical Treatment and licensees.

Control of Areas due to

Presence of Patients Con- taining Radioactivity

Following Implementation

of Revised 10 CFR Part 20

94-07 Solubility Criteria for 01/28/94 All byproduct material and

Liquid Effluent Releases fuel cycle licensees with

to Sanitary Sewerage under the exception of licensees

the Revised 10 CFR Part 20 authorized solely for

sealed sources.

A'ttachment 4 IN 94-35 May 16, 1994 LIST OF RECENTLY ISSUED

NRC INFORMATION NOTICES

Information Date of

Notice No. Subject Issuance Issued to

94-34 Thermo-Lag 330-660 05/13/94 All holders of OLs or CPs

Flexi-Blanket Ampacity for nuclear power reactors.

Derating Concerns

94-33 Capacitor Failures in 05/09/94 All holders of OLs or CPs

Westinghouse Eagle 21 for nuclear power reactors.

Plant Protection Systems

93-53, Effect of Hurricane 04/29/94 All holders of OLs or CPs

Supp. 1 Andrew on Turkey Point for nuclear power reactors.

Nuclear Generating

Station and Lessons Learned

94-32 Revised Seismic Hazard 04/29/94 All holders of OLs or CPs

Estimates for nuclear power reactors.

94-31 Potential Failure of 04/14/94 All holders of OLs or CPs

Wilco, Lexan-Type HN-4-L for nuclear power reactors.

Fire Hose Nozzles

90-68, Stress Corrosion Cracking 04/14/94 All holders of 01 or CPs

Supp. 1 of Reactor Coolant Pump for pressurized water

Bolts reactors.

94-30 Leaking Shutdown Cooling 04/12/94 All holders of OLs or CPs

Isolation Valves at for nuclear power reactors.

Cooper Nuclear Station

94-29 Charging Pump Trip during 04/11/94 All holders of OLs or CPs

a Loss-of-Coolant Event for pressurized water

Caused by Low Suction reactors.

Pressure

92-51, Misapplication and 04/12/94 All holders of OLs or CPs

Supp. 1 Inadequate Testing of for nuclear power reactors.

Molded-Case Circuit

Breakers

OL - Operating License

CP - Construction Permit

IN 94-35 May 16, 1994 This information notice requires no specific action or written response. If

you have any questions about the information in this notice, please contact

the technical contacts listed below or the appropriate Office of Nuclear

Reactor Regulation project manager.

orig /s/'d by Robert F. Burnett orig /s/'d by Brian K. Grimes

Robert F. Burnett, Director Brian K. Grimes, Director

Division of Fuel Cycle Safety Division of Operating Reactor Support

and Safeguards Office of Nuclear Reactor Regulation

Office of Nuclear Material Safety

and Safeguards

Technical contacts: D. R. Carter, NRR

(301) 504-1848 J. Roth, NMSS

(301) 504-3427 Attachments:

1. NIOSH Respirator User Notice - February 23, 1994

2. NIOSH Respirator User Notice (Status Update) - March 31, 1994

3. List of Recently Issued NMSS Information Notices

4. List of Recently Issued NRC Information Noticesl.

• See nrevious concurrence

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IN 94-xx

April xx, 1994 This information notice requires no specific action or written response. If

you have any questions about the information in this notice, please contact

the technical contacts listed below or the appropriate Office of Nuclear

Reactor Regulation project manager.

Robert F. Burnett, Director Brian K. Grimes, Director

Division of Fuel Cycle Safety Division of Operating Reactor Support

and Safeguards Office of Nuclear Reactor Regulation

Office of Nuclear Material Safety

and Safeguards

Technical contacts: D. R. Carter, NRR

(301) 504-1848 J. Roth, NMSS

(301) 504-3427 Attachments:

1. NIOSH Respirator User Notice - February 23, 1994

2. NIOSH Respirator User Notice (Status Update) - March 31, 1994

3. List of Recently Issued NMSS Information Notices

4. List of Recently Issued NRC Information NoticesI.

• See Drevious concurrence

OFFICE OGCB/DORS *TECH ED. PRPB/DRSS PR RSS C: PS/DRSS D:DRSS

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DATE . 04k/ 04/20/94 j 04/22/04 04/34Q94 AC:OGCB/DORS D:: D:DORS

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IN 94-xx

April xx, 1994 Mask-mounted regulator and combination air-line and SCBA devices with

regulators that attach to the facepiece with a threaded connector are not

affected by the respirator user notice.

NIOSH believes that proper maintenance will prevent these failures in warm- weather service. Therefore, NIOSH does not recommend removing the mask- mounted regulator SCBA from warm-weather service. However, in subfreezing

temperatures in the presence of water spray, NIOSH recommends against the use

of mask-mounted regulator SCBA. This recommendation stands until data and

information are sufficient to convince NIOSH that inadvertent mask-mounted

regulator separation is not possible for a properly used and maintained SCBA.

Licensees may wish to share this information with other potential users, such

as local fire departments.

This information notice requires no specific action or written response. If

you have any questions about the information in this notice, please contact

the technical contacts listed below or the appropriate Office of Nuclear

Reactor Regulation project manager.

Robert F. Burnett, Director Brian K. Grimes, Director

Division of Fuel Cycle Safety Division of Operating Reactor Support

and Safeguards Office of Nuclear Reactor Regulation

Office of Nuclear Material Safety

and Safeguards

Technical contacts: D. R. Carter, NRR

(301) 504-1848 J. Roth, NMSS

(301) 504-3427 Attachments:

1. NIOSH Respirator Users Notice

2. List of Recently Issued NMSS Information Notices

3. List of Recently Issued NRC Information Notices

• See previous concurrence

OFFICE OGCB/DORS *TECH ED. *PRPB/DRSS *PRPB/DRSS *C:RPS/DRSS *D:DRSS .

NAME NECampbell MJac DCarter JWigginton LJCunningham FCongel

DATE 04/I5/l94 o 04/07/94 04/11/94 04/11/94 _ 04/11/04 04/12/94 J

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DOCUMENT NAME: G:\NANCY\MSA1N94.VK5

iN'94-xx

April xx, 1994 Mask-mounted regulator and combination air-line and SCBA devices with

regulators that attach to the facepiece with a threaded connector are not

affected by the respirator user notice.

At this time, NIOSH does not recommend removing the mask-mounted regulator

SCBA from warm-weather service. However, in subfreezing temperatures in the

presence of water spray, NIOSH recommends against the use of mask-mounted

regulator SCBA. This recommendation stands until data and information are

sufficient to convince NIOSH that inadvertent mask-mounted regulator

separation is not possible for a properly used and maintained SCBA.

This information notice requires no specific action or written response.

Licensees may wish to share this information with other potential users, such

as local fire departments. If you have any questions about the information in

this notice, please contact the technical contact listed below or the

appropriate Office of Nuclear Reactor Regulation project manager.

Brian K. Grimes, Director

Division of Operating Reactor Support

Office of Nuclear Reactor Regulation

Technical contact: D. R. Carter, NRR

(301) 504-1848 Attachments:

1. NIOSH Respirator Users Notice

2. List of Recently Issued NRC Information Notices

• See orevious concurrence

OFFICE OGCB/DORS *TECH ED. PRPB/DRSS l P jPRPAD

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DATE 04/ /94 04/07/94 04////94 04////94 04Y'///04 0

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AC:OGCB/DORS D:DORS

lAJKugler BKGrimes 12JA <.

04/ /94 04/ /94 DOCUMENT NAME: G:\NANCY\MSAIN94.DRS

This information notice requires no specific action or written response.

Licensees may wish to share this information with other potential users, such

as local fire departments. If you have any questions about the information in

this notice, please contact the technical contact listed below or the

appropriate Office of Nuclear Reactor Regulation project manager.

Brian K. Grimes, Director

Division of Operating Reactor Support

Office of Nuclear Reactor Regulation

Technical contact: D. R. Carter, NRR

(301) 504-1848 Attachment":

/,NIOSH Respirator Users Notice

A, List of Recently Issued NRC Information Notices

OFFICE OGCB/DORS TECH ED. C:RPS/DRSS D:DRSS _ AC:OGCB/DORS D:DORS

NAME NECampabell i #ia-Af LJCunningham FCongel AJKugler BKGrimes

DATE 04/ /94 04/ 1/94 104/ /94 104/ /94 104/ /04 104/ /94 DOCUMENT NAME: MSAIN94.DRS