Implementation of COVID-19 Health and Safety Measures

D. Forkel-Wirth, HSE

ED, 12th May 2020

EDMS 2374975

COVID-19 Cases – Follow-up

2

Grand Total : 102 personnes

Cas testés positifs : 12 + 1 conjointe

Cas testés négatifs : 15

Cas suspects : 74

Etat de santé des personnes en suivies COVID-19

89 Plus de symptômes

13 Symptômes

0 Hospitalisé

ED meeting 12th May 2020 EDMS 2374975

COVID-19 Cases – Follow-up

COVID-19 Helpline:

• at the end of last week a sudden increase of (5) persons with COVID-19 symptoms within 24 hours

• all tests were negative

• persons have to stay at home (advice from attending doctor)

• regularly contacted by Medical Service,

• in case of aggravation or more COVID-19 symptoms – second test will be done

unnecessary delays in search of medical doctors prescribing the tests

-> CERN’s consultant medical doctor will issue the prescriptions for MPs

3ED meeting 12th May 2020 EDMS 2374975

Safety Training

COVID-19 training course (e-learning) is available from 12th May (today)

Refresher courses:

• most of them are e-learning (e.g. RP Controlled Areas).

• for those that need physical presence (Self Rescue) the validity will be automatically

prolonged by Safety Training – by checking the names on the whitelist.

Bat 55 (access card office) is no longer adequate for newcomers to do e-learning

• alternative premises are being prepared (safety training center in Prévessin?)

• cumbersome logistics, loss of time and efficiency for newcomers (contractors included!)

ED meeting 12th May 2020 EDMS 2374975

Safety Training

3 face-to-face courses are mandatory

Self rescue masks

via Vidyo(demonstration in the tunnel mock-up is suspended for the time being)

Radiation Protection Training for Controlled Areas

via Vidyo

Electrical safety

via Vidyo

5

All available from 18th May

onwards

ED meeting 12th May 2020 EDMS 2374975

Implementation of COVID-19 Measures

Departments are very pro-active!

Elevators:

HSE input:

• mask obligatory

• 1 m2/person

Implementation by EN-HE

6ED meeting 12th May 2020 EDMS 2374975

Implementation of COVID-19 Measures

7

NC and SC Magnets

Activities, Readiness, Resources Availability

L.Bottura, TE-MSC at LS2C 55

ED meeting 12th May 2020 EDMS 2374975

HSE on HVAC Under COVID-19

Ventilate indoor spaces as much as possible with fresh air

• Offices, meeting rooms – open windows and doors

• to create a strong draught

• at least every 2 hours for a minimum duration of 10 min

• Ventilation system (supplying fresh air): keep the ventilation on 24/7

• Clean rooms:

• HEPA filtration exists AND air renewal rate / h > 12 – no additional measures (besides masks

and d > 2 m)

• Other:

• Use of goggles or face shields (in addition to masks) for distances < 2m

• Use of face shields (in addition to masks) for distance < 2m AND in closed, confined,

indoor environments (95% risk reduction for inhaling large droplets in < 1m distance [1])

• Data centers and similar – mask + face shields

• Control rooms – air measurements planned for the CCC by EN/CV – report will be issued

8[1] William G. Lindsley, et al. (2014)

10.1080/15459624.2013.877591

HSE is asked to give advice

(related to surface buildings)

ED meeting 12th May 2020 EDMS 2374975

Obligatory:

• masks

• physical distance > 2m

Systems to Cool Indoor Air

9

Recirculating

A/C Unit for

comfort

(office-type split

systems)

Full (or partial) fresh

air cooling

(cooling battery in

Air Handling Units -

AHU)

Switch-off

Allowed !

Reduce max capacity

in surface bldgs. if

fresh air < 100%

e.g. 50 % fresh air and 50%

recirculation - possible solution is to

reduce the occ. capacity to 50%

ED meeting 12th May 2020 EDMS 2374975

Conclusion

• CERN COVID-19 related health and safety measures are being implemented

• A lot of good will in the Groups and Departments

However

• many comments on wearing of masks (not all colleagues are convinced)

• 2 masks/person/day seems insufficient for a number of persons (e.g. hay fever, heavy physical work, etc.); 3 – 4 masks/person/day for certain categories of personnel?

• A lot of practical questions – mainly HSE and SMB related

Protection concept of ‘Jardin des Particules’ checked and approved by HSE

10ED meeting 12th May 2020 EDMS 2374975