APPENDIX H.
Interlibrary Library Loan Turnaround Time
Performance Measurement 1999 – 2001
Submitted By Shirley B. Cavanagh

Interlibrary Loan’s primary service goal is to ensure fast delivery of loan materials to our library patrons.  Buley Library patrons now have immediate access to our numerous electronic full-text databases and receive most material from the Connecticut State University Library consortium within 3 to 5 days.

ILL services have been using the latest technology to find journals not owned by our library. We are currently using a Fax machine and Ariel software to obtain quickly journal articles available from other libraries.  Ariel software directly scans articles and documents and then transmits these full-text journal articles, saving time, postal costs and long distance phone charges.

Our patrons’ needs for research material have increased substantially and Interlibrary Loan Services must provide fast and cost-effective delivery of material from a variety of sources. To meet our library patrons’ expectations, ILL services process most loan requests submitted by SCSU faculty and students within 24 hours from receipt of request. Last year, we decided to review the turnaround time for our ILL requests to see how quickly material was processed and delivered to our library users. Turnaround time is defined as the amount of time between the acceptance of the ILL request by Interlibrary Loan staff and when the material is finally delivered to Interlibrary Loan.

A literature review was conducted to determine the average turnaround times reported in various articles and studies. An article entitled Interlibrary Loan Turnaround Time by Linda Phillips gave us statistical information on the supply times for academic libraries. This article reported that the average time for research libraries to send and receive material ranged from 10 to 22 calendar days.  While the turnaround time for college libraries ranged from 6 to 16 calendar days1. A 1996 study of fill time for libraries using the WLN ILL system reported an average of 11 days from the day the request is routed to the library that supplied the item until the item is received2.  An analysis of our library’s statistics could now be benchmarked against the standards already established by other academic libraries.

All of our ILL transactions are available from the OCLC monthly reports sent to our library. Interlibrary Loan used these statistical reports to evaluate and compare the turnaround time of our ILL transactions, covering a 6-month period (July to December) for the years 1999 and 2000.  Our analysis concluded that from July to December 1999 the mean turnaround time for ILL loans was 14.9 days.  During the 6-month period in 2000, the mean turnaround times was further reduced to 7.8 days.  Comparing these two 6-month periods, Interlibrary Loan was able to reduce the average turnaround time in 2000 by 7.1 days or by 47.5 percent.  Since library patrons are concerned primarily with how fast their requests are received, the results  have encouraged us to provide faster and higher quality service for our students and faculty.

Since last year was the first time that our interlibrary loan statistics were reviewed, we decided to evaluate again the turnaround time for two full years. This evaluation covered two full fiscal years, 1999/2000 and 2000/2001. In 1999/2000, ILL turnaround time was 17 days.  In 2000/2001, the time was reduced to 12 days, a 29.4 percent improvement. Our turnaround time continues to improve and we will strive to maintain or even reduce the time needed to actually receive loan material. A copy of the statistics for the two years is provided in the appendix of this report.

Interlibrary Loan Services should expand its services and ability to deliver library material quickly to our patrons.  For example, interlibrary loan forms should be put online in order to reduce the amount of paperwork handled by the staff.  Students and faculty could then send electronically their loan requests, saving time in the ILL process.  Our Connecticut State University Library courier service should be studied to determine the fill rate within the consortium.  We receive most material from three to five days but have never actually analyzed the turnaround time of this courier system. Finally, an analysis of Fax and Ariel transmissions should be conducted to review the effectiveness of using these technologies.  Library research shows that using Ariel significantly improves the transit time for receiving articles. Our library should continue to emphasis timely service to our borrowers through studies and implementation of new technologies.  

  1.   Linda L. Phillips et al., “Interlibrary Loan Turnaround Time: Measuring the Component Parts" Journal of Interlibrary Loan, Document Delivery & Information Supply. Vol. 9, No. 3(1999): 97-115.

  2. Kathy Forsythe, “WLN Online System… How It Works for You,” WLN Participant 15 (Winter 1996): 7.

Interlibrary Loan Statistics
1999/2000
July    1999    2000
Borrower Requests Initiated  144 152
Requests Filled  89 97
Requests Unfilled Lender 36 30
Requests Received  269 443
Requests Filled 172 279
Requests Unfilled  92 184

Turnaround Time

17.92 days 19.88 days

August  1999    2000
Borrower Requests Initiated  70 75
Requests Filled    72
Requests Unfilled Lender 22 21
Requests Received  370 527
Requests Filled 200 262
Requests Unfilled  170 257

Turnaround Time

17.13 days 23.40 days

September    1999    2000
Borrower Requests Initiated  196 118
Requests Filled  101 87
Requests Unfilled Lender 22 33
Requests Received  601 202
Requests Filled 326 42
Requests Unfilled  233 94

Turnaround Time

11.81 days 14.61 days

October    1999    2000
Borrower Requests Initiated  251 262
Requests Filled  228 219
Requests Unfilled Lender 39 31
Requests Received  768 828
Requests Filled 453 455
Requests Unfilled  312 446

Turnaround Time

10.29 days 7.42 days

November    1999    2000
Borrower Requests Initiated  229 200
Requests Filled  151 192
Requests Unfilled Lender 45 19
Requests Received  708 667
Requests Filled 413 367
Requests Unfilled  314 303

Turnaround Time

14.38 days 7.92 days

December    1999    2000
Borrower Requests Initiated  82 28
Requests Filled  67 65
Requests Unfilled Lender 55 18
Requests Received  394 410
Requests Filled 242 230
Requests Unfilled  171 180

Turnaround Time

18.71 days 11.98 days

2000/2001 Data

January

2000  2001
Borrower Requests Initiated  59 86
Requests Filled  2 38
Requests Unfilled Lender 6 21
Requests Received  514 685
Requests Filled 150 435
Requests Unfilled  342 246

Turnaround Time

42.03 days 10.57 days

February 

2000  2001
Borrower Requests Initiated  234 214
Requests Filled  192 202
Requests Unfilled Lender 39 19
Requests Received  726 736
Requests Filled 411 404
Requests Unfilled  342 309

Turnaround Time

16.52 days 9.60 days

March 

2000  2001
Borrower Requests Initiated  238 214
Requests Filled  177 202
Requests Unfilled Lender 46 19
Requests Received  791 736
Requests Filled 453 404
Requests Unfilled  331 309

Turnaround Time

11.18 days 9.60 days

April 

2000  2001
Borrower Requests Initiated  159 211
Requests Filled  132 177
Requests Unfilled Lender 30 23
Requests Received  624 727
Requests Filled 402 402
Requests Unfilled  228 343

Turnaround Time

17.16 days 8.07 days

May 

2000  2001
Borrower Requests Initiated  133 98
Requests Filled  117 74
Requests Unfilled Lender 25 24
Requests Received  465 503
Requests Filled 217 279
Requests Unfilled  250 220

Turnaround Time

16.71 days 9.55 days

June 

2000  2001
Borrower Requests Initiated  186 95
Requests Filled  147 65
Requests Unfilled Lender 25 6
Requests Received  469 514
Requests Filled 288 313
Requests Unfilled  170 207

Turnaround Time

10.11 days 11.74 days

Interlibrary Loan Turnaround Statistics

  1999/2000 2000/2001
July 17.92 19.88
August 17.13 23.40
September 11.81 14.61
October 10.29 7.42
November 14.38 7.92
December 18.71 11.98
January 42.63 10.57
February 16.52 9.60
March 11.18 8.25
April 17.16 8.07
May 16.71 9.55
June 10.11 11.74

1999/2000
Average Turnaround Time
17 Days
2000/2001
Average Turnaround Time
12 Days  

Turnaround time reduced by 29.4%