Workers striking at the Sellafield site must adhere to new conditions or face breaking the law.
Cumbria police said it had become necessary to impose conditions because of the impact the ongoing protests have had on the community.
The industrial action is being carried out by members of the Unite union who work for sub-contractors at the site. An overtime ban is also in place.
Workers are demanding site-specific allowances, which they claim are paid at other nuclear sites.
The union says the workers, covered by the National Agreement for the Engineering Construction Industry and the Construction Industry Joint Council agreements, should be paid the allowance because they work in a highly hazardous environment.
Industrial action is now in its fifth week and a major feature has been the Sellafield shuffle – a slow march tactic by strikers, which has taken up to five hours to complete.
It has caused misery for thousands of commuters and huge tailbacks around the nuclear site.
More industrial action is planned for next week.
Now, Cumbria Constabulary said it had authorised the conditions under the Public Order Act.
They come into force from Thursday, November 13 and are:
- Processions must not commence before 7am
- Processions must conclude by 10am
- Any Calder Bridge to North Gate procession must start south of Sella Park Country House Hotel junction
It is an offence to fail to comply with a condition issued under the Public Order Act 1986.
A spokesman from Cumbria Constabulary said, “The imposition of these conditions has become necessary due to the cumulative impact that these protests have had upon local communities.
“These conditions do not prevent peaceful protesting, but fairly balance the rights of protesters with the rights of communities and members of the public going about their lawful business.
“Members of the public are reminded to consider potential delays in and around the location whilst this activity takes place, and to plan accordingly.”
