1. GNB-CPR Technical Secretariat
NB-CPR/SG17 – 16/103
GNB-CPR Technical Secretariat
Inquiry on audit time – EN

2. Inquiry on audit time – EN 1090-1
Inquiry / questionnaire:
3 ‘imaginary’ companies described (See NB-CPR/SG17-16/100):
A ‘micro company’ – 3 employees
A ‘small, well-organized company’ – 10 employees
A ‘well established workshop with series production equipment’ – 40 employees
All bodies notified to EN asked to submit their estimates
31 notified bodies replied

3. Inquiry on audit time – EN 1090-1
CHARACTERISTICS
COMPANY n 1
COMPANY n 2
COMPANY n 3
Size
(number of employees) 3 10 40
Company description
Micro company, craftsman based company
Small company
Well organized
Well established workshop with series production equipment
EXC 2
Calculation included NO
YES
Coating process/galvanizing process included/outsourced
Number of welding processes 4 6
ISO 3834 certified
Aluminium + stainless

4. INITIAL CERTIFICATION
Inquiry on audit time – EN
RESULTS
Company 1
Min
Lower 10-percentile
Lower 25-percentile
Median
Upper 75-percentile
Upper 90-percentile
Max
INITIAL CERTIFICATION
Man-days on site
0,5
0,9
1,0
2,0
3,0
Man-days off site
0,2
Total number of man-days
1,2
1,3
1,5
2,3
4,0
SURVEILLANCE
0,7
0,8
0,0
0,4
2,5

5. INITIAL CERTIFICATION
Inquiry on audit time – EN
RESULTS
Company 2
Min
Lower 10-percentile
Lower 25-percentile
Median
Upper 75-percentile
Upper 90-percentile
Max
INITIAL CERTIFICATION
Man-days on site
0,9
1,0
1,2
1,5
2,0
3,0
4,0
Man-days off site
0,0
0,5
0,8
1,3
Total number of man-days
2,4
3,3
6,0
SURVEILLANCE
0,2

6. INITIAL CERTIFICATION
Inquiry on audit time – EN
RESULTS
Company 3
Min
Lower 10-percentile
Lower 25-percentile
Median
Upper 75-percentile
Upper 90-percentile
Max
INITIAL CERTIFICATION
Man-days on site
1,1
1,5
1,9
2,0
3,0
5,0
Man-days off site
0,0
0,5
1,0
Total number of man-days
2,3
2,7
4,3
7,0
SURVEILLANCE
0,9
0,2
1,6
3,8
4,0

7. Inquiry on audit time – EN 1090-1 PROPOSED GUIDANCE
Companies like ”Company 1”
[man-days]
Companies like ”Company 2”
Companies like ”Company 3”
INITIAL CERTIFICATION
Total audit time
(On-site + off-site)
1,5
2,4
3,0
SURVEILLANCE
1,2
2,0
The 3 ‘model companies’ shall be used as reference for all estimates
NBs estimating the 3 model companies at other levels shall make a general adjustment to their estimates
Any deviation from the above audit time shall be justified and the reasons recorded
At least 50% of the estimated audit time shall be spent on-site