Information Notice No. 89-47:Potential Problems with Worn or Distorted Hose Clamps on Self-Contained Breathing Apparatus
NUCLEAR REGULATORY COMMISSION
OFFICE OF NUCLEAR REACTOR REGULATION
WASHINGTON, D.C. 20555
May 18, 1989
Information Notice No. 89-47: POTENTIAL PROBLEMS WITH WORN OR DISTORTED
HOSE CLAMPS ON SELF-CONTAINED BREATHING
All holders of operating licenses or construction permits for nuclear power
reactors and fuel facilities.
This information notice is being provided to alert addressees to potential
problems with worn or distorted hose clamps on self-contained breathing ap-
paratus (SCBA). It is expected that licensees will review the information
for applicability to their facilities and consider actions, if appropriate,
to preclude use of a potentially defective respirator. However, suggestions
contained in this notice do not constitute NRC requirements and, therefore,
no specific action or response is required.
Description of Circumstances:
A Department of Health and Human Services "NIOSH Respirator User's Notice"
(Attachment 1) described two events in which retaining clamps on the breathing
tube of a SCBA failed, causing the tube to separate from the facepiece. These
failures led to the death of one wearer and serious injury to another. In both
cases, the failure was attributed to worn or deformed clamps that may have
resulted from improper maintenance of the units.
Hose clamp failures on SCBAs can result in serious personnel safety hazards.
In order to help prevent these failures, it is important that personnel pay
particular attention while performing maintenance on the SCBAs. It is im-
portant that maintenance personnel perform careful visual inspections of
hose clamps to identify worn or deformed ones and, when replacing these
defective clamps, adhere strictly to the manufacturer's instructions. Care
when disassembling or reassembling breathing tube clamps will also minimize
In the general interest of personnel safety and in order to maintain an ade-
quate emergency response capability, licensees may wish to share this informa-
tion with other potential SCBA users, such as local fire department personnel.
Also, licensees may wish to consider subscribing to the NIOSH service in order
.. IN 89-47
May 18, 1989
Page 2 of 2
to receive prompt notification of significant problems with respiratory equip-
ment. Licensees can be added to the NIOSH distribution list by writing to
Mr. Robert Schutz, Respirator Problem Coordinator of the Division of Safety
Research, at the address in the upper right corner of Attachment 1.
No specific action or written response is required by this information notice.
If you have any questions about this matter, please contact the technical
contact listed below or the Regional Administrator of the appropriate regional
Charles E. Rossi, Director
Division of Operational Events Assessment
Office of Nuclear Reactor Regulation
Technical Contact: Roger L. Pedersen, NRR
1. NIOSH Users Notice
2. List of Recently Issued NRC Information Notices
.. Attachment 2
May 18, 1989
Page 1 of 1
LIST OF RECENTLY ISSUED
NRC INFORMATION NOTICES
Information Date of
Notice No._____Subject_______________________Issuance_______Issued to________
89-46 Confidentiality of 5/11/89 All holders of
Exercise Scenarios licenses for fuel
having an approved
89-45 Metalclad, Low-Voltage 5/8/89 All holders of OLs
Power Circuit Breakers or CPs for nuclear
Refurbished with Sub- power reactors.
89-44 Hydrogen Storage on the 4/27/89 All holders of OLs
Roof of the Control Room or CPs for nuclear
88-82, Torus Shells with Corrosion 5/2/89 All holders of OLs
Supp. 1 and Degraded Coatings in or CPs for BWRs.
89-43 Permanent Deformation of 5/1/89 All holders of OLs
Torque Switch Helical or CPs for nuclear
Springs in Limitorque power reactors.
SMA-Type Motor Operators
88-97, Potentially Substandard 4/28/89 All holders of OLs
Supp. 1 Valve Replacement Parts or CPs for nuclear
89-42 Failure of Rosemount 4/21/89 All holders of OLs
Models 1153 and 1154 or CPs for nuclear
Transmitters power reactors.
89-41 Operator Response to 4/20/89 All holders of OLs
Pressurization of Low- or CPs for nuclear
Pressure Interfacing power reactors.
88-75, Disabling of Diesel 4/17/89 All holders of OLs
Supplement 1 Generator Output Circuit or CPs for nuclear
Breakers by Anti-Pump power reactors.
OL = Operating License
CP = Construction Permit
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