How often
Fire extinguishers: monthly, date and initials recorded; serviced by a qualified third party at least yearly. SCBA: inspected monthly and before and after each use; annual flow test; 5-year hydro. Emergency showers and emergency lighting: monthly. Plumbed eyewash and showers: activated weekly. Rig ESD: annual.
Source: Nordic Fire Extinguisher Procedure 4.0 to 6.0; OSHA 29 CFR 1910.157(e)(2), (e)(3); OSHA 29 CFR 1910.134(h)(3); Nordic PM Plan 9.0 Table 5; ISEA Z358.1