United States Nuclear Regulatory Commission - Protecting People and the Environment

IEB 79-01b Supplement 3 Environmental Qualification of Class 1E Equipment (Generic Letter 80-89)



GL80089

                              October 24, 1980

MEMORANDUM FOR:     B. H. Grier, Director, Region I
                    J. P. O'Reilly, Director, Region II
                    J. G. Keppler, Director, Region III
                    K. V. Seyfrit, Director, Region IV
                    R. H. Engelken, Director, Region V

FROM:               Norman C. Mosely, Director, Division of Reactor 
                     Operations Inspection, IE

SUBJECT:            IE SUPPLEMENT NO. 3 TO BULLETIN 79-01B:  ENVIRONMENTAL 
                    QUALIFICATION OF CLASS 1E EQUIPMENT


The subject supplement should be dispatched for action on October 24, 1980 
to all power reactor facilities with an Operating License.  The supplement 
should be dispatched for information to the SEP plants (including Indian 
Point 2 and 3 and Zion 1 and 2)  the NTOL plants and plants with a 
construction permit.  The supplement will also be transmitted from 
Headquarters to participants in the July Region meeetings.  

The purpose of this supplement is to clarify issues raised by Supplement 
No. 2.  No inspection requirements were added as a result of this 
Supplement.



                                   Norman C. Mosely, Director
                                   Division of Reactor Operations
                                     Inspection
                                   Office of Inspection and Enforcement

Enclosures:
1.   Draft Transmittal Letters
2.   IE Supplement No. 3 to Bulletin
       No. 79-01B


CONTACT:  V. D. Thomas, IE
          49-28180

.

(Draft letter to all power reactor facilities with an operating license less 
SEP, Indian Point, and Zion)

IE Supplement No. 3 to Bulletin No. 79-01B:  ENVIRONMENTAL QUALIFICATION OF
                                             CLASS 1E EQUIPMENT

Gentlemen:

Enclosed is IE Supplement No. 3 to Bulletin No. 79-01B.  This supplement 
clarifies two issues raised by Supplement No. 2.  These are (1) the 
submittal of qualification information for equipment resulting from TMI 
Action Plan requirements and (2) the qualification of equipment which is 
required to achieve a cold shutdown condition.  This action is the result of 
industry feedback to NRC regarding interpretation of Supplement No. 2.  The 
information presented is applicable to your submittal regarding 
environmental qualification of Class 1E equipment which is required by 
November 1, 1980.

Should you have questions regarding this Supplement please contact this 
office.  

                                        Sincerely



                                        Signature
                                        (Regional Director)

Enclosures:
1.   IE Supplement No. 3 to
       Bulletin No. 79-01B
2.   Recently Issued IE Bulletins

.


                                                       SSINS No.:  6820 
                                                       Accession No.: 
                                                       8008220248 
                                                       IEB Sup #3 to 79-01B 
                                 UNITED STATES 
                         NUCLEAR REGULATORY COMMISSION 
                     OFFICE OF INSPECTION AND ENFORCEMENT 
                           WASHINGTON, D.C.   20555 

                               October 24, 1980 

IE Bulletin No. 79-01B Supplement No. 3:  ENVIRONMENTAL QUALIFICATION OF 
                                          CLASS IE EQUIPMENT 

Description of Circumstances: 

Two issues were raised by Supplement No. 2 which require clarification.  
These are:  (1)  the dates required for submittal of qualification 
information for TMI related equipment, and (2)  whether the equipment 
required to achieve a Cold Shutdown condition must be environmentally 
qualified if the licensing basis for the plant was a Hot Safe Shutdown 
condition. 

(1)  Supplement No. 2 (Q.1, Q.5) addressed the minimum cold shutdown 
     requirements.  The staff position on this issue is that the licensee 
     must identify and environmentally qualify the equipment needed to 
     complete one method (path) of achieving and maintaining a cold shutdown
     condition.  The equipment of other paths must be reviewed to assure 
     that its failure will not aggravate or contribute to the accident (ref. 
     Q.5 Supp. No. 2). 

     Due to an inconsistency between Supplement No. 1 and Supplement No. 2, 
     the staff position on this issue was unclear.  Therefore, the following
     will apply: 

     a.  The qualification information for equipment needed to achieve and 
         maintain  a Hot Safe Shutdown condition must be submitted no later 
         than November 1, 1980. 

     b.  The qualification information for equipment required to achieve and
         maintain a Cold Shutdown condition (ref. Q.1 and Q.5 of Supplement 
         No.2) must be submitted not later than February 1, 1981. 

(2)  IEB 79-01B required a 90 day response which was due in mid-April 1980. 
     Supplement 1 (Feb. 1980) informed licensees that equipment which was 
     "planned" to be installed as a result of lessons learned need not be 
     addressed in that response.  Some of this equipment has since been 
     installed.  Supplement No. 2 (Q.5, Q.21) identified that the staff 
     position was that equipment which is installed should be treated in a 
     manner similar to all other safety-related electrical equipment and be 
     addressed in the November 1, 1980 submittal.  This position represents 
     no change in staff position regarding the scope of the review.  
     However, since the staff position on this issue was unclear the 
     following will apply: 
.

                                                         IEB 79-01B Sup #3 
                                                         October 24, 1980 
                                                         Page 2 of 2 


    a.  Qualification information for installed TMI Action Plan equipment 
        must be submitted by February 1, 1981. 

    b.  Qualification information for future TMI Action Plan equipment (ref.
        NUREG-0737, when issued), which requires NRC pre-implementation 
        review, must be submitted with the pre-implementation review data. 

    c.  Qualification information for TMI Action Plan equipment currently 
        under the NRC review should be submitted as soon as possible. 

    d.  Qualification information for TMI Action Plan equipment not yet 
        installed which does not require pre-implementation review should be
        submitted to NRC for review by the implementation date. 

The above items 1 and 2 represent no change in staff position regarding the 
scope of the 79-01B Supplement 2 review. 

IE Bulletin No. 79-01B was issued under a blanket GAO clearance (B180225 
(R0072), clearance expired July 31, 1980) specifically for identified 
generic problems.  Supplement No. 3 to Bulletin 79-01B is for information, 
hence no GAO clearance is required. 



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